@import "https://fonts.googleapis.com/css2?family=Archivo+Narrow:wght@400;500;600;700&family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap";:root{color:#202331;font-synthesis:none;text-rendering:optimizelegibility;background:#f7f8fc;font-family:DM Sans,sans-serif}*{box-sizing:border-box}body{min-width:1100px;margin:0}.app-shell{min-height:100vh;display:flex}.sidebar{background:#fff;border-right:1px solid #e7e9f0;flex-direction:column;flex-shrink:0;width:242px;padding:26px 16px 18px;display:flex}.brand{letter-spacing:-1px;align-items:center;gap:8px;padding:0 12px 28px;font-family:Space Grotesk;font-size:22px;font-weight:700;display:flex}.brand-mark{color:#fff;background:#6355e9;border-radius:9px;place-items:center;width:28px;height:28px;font-family:Georgia;font-size:20px;font-weight:400;display:grid}.workspace-switcher{border:1px solid #e6e7ef;border-radius:12px;align-items:center;gap:9px;margin-bottom:29px;padding:10px 9px;display:flex}.workspace-avatar,.top-avatar{color:#695cec;background:#f1eeff;border-radius:8px;place-items:center;width:30px;height:30px;font-weight:700;display:grid}.workspace-switcher strong,.workspace-switcher span,.profile-row strong,.profile-row span{font-size:12px;line-height:16px;display:block}.workspace-switcher div:nth-child(2){flex:1}.workspace-switcher div:nth-child(2) span,.profile-row span{color:#9699aa;font-size:11px}.chevron{color:#9799a8;font-size:18px}.nav-label{letter-spacing:1.1px;color:#abadb9;padding:0 12px 10px;font:500 10px DM Mono}.nav-item,.subject-list button,.support-link{color:#707485;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:9px;align-items:center;gap:12px;width:100%;padding:10px 12px;font:500 13px DM Sans;display:flex}.nav-item.active{color:#5e53da;background:#efedff}.icon{text-align:center;width:17px;font-size:18px;line-height:1}.nav-count,.subject-count{color:#989aaa;margin-left:auto;font:11px DM Mono}.subject-dot{border-radius:50%;width:8px;height:8px;margin-right:3px}.blue{background:#668cf4}.coral{background:#ee8275}.gold{background:#edbb58}.support-link{color:#858898;margin-bottom:21px}.profile-row{border-top:1px solid #ececf1;align-items:center;gap:9px;padding:17px 8px 0;display:flex}.profile-avatar,.top-avatar{color:#ce6f5e;background:#ffe6df;border-radius:50%;place-items:center;width:31px;height:31px;font-size:10px;font-weight:700;display:grid}.profile-row div:nth-child(2){flex:1}.more{letter-spacing:2px;color:#aaa}.main-content{flex:1;min-width:0}.topbar{background:#fbfbfd;border-bottom:1px solid #e7e9f0;justify-content:space-between;align-items:center;height:74px;padding:0 45px;display:flex}.breadcrumb{color:#a2a4b0;font-size:12px}.breadcrumb b{color:#d0d1da;margin:0 10px;font-weight:400}.breadcrumb strong{color:#4b4e5d;font-weight:600}.top-actions{align-items:center;gap:18px;display:flex}.search{color:#a5a7b3;background:0 0;border:0;align-items:center;gap:8px;padding:8px 0;font:12px DM Sans;display:flex}.search kbd{color:#9fa1ad;border:1px solid #dedfe7;border-radius:5px;margin-left:14px;padding:3px 5px;font:10px DM Mono}.bell{color:#8f92a1;background:0 0;border:0;font-size:19px;position:relative}.bell span{background:#f07262;border-radius:50%;width:5px;height:5px;position:absolute;top:1px;right:0}.top-avatar{width:34px;height:34px}.content-wrap{max-width:1280px;margin:0 auto;padding:43px 45px 60px}.welcome-row,.section-heading,.panel-heading{justify-content:space-between;align-items:flex-start;display:flex}.eyebrow{color:#a1a3b0;letter-spacing:1.1px;font:500 10px DM Mono}.welcome-row h1{letter-spacing:-1.3px;color:#202331;margin:11px 0 6px;font:600 32px Space Grotesk}.welcome-row p,.section-heading p,.panel-heading p{color:#9699a9;margin:0;font-size:13px}.wave{color:#f2b64a;margin-left:4px;font-size:24px}.primary-button,.light-button,.outline-button{color:#fff;cursor:pointer;background:#6558e8;border:0;border-radius:8px;padding:12px 16px;font:600 12px DM Sans}.primary-button span{vertical-align:-1px;margin-right:6px;font-size:17px}.hero-grid{grid-template-columns:2fr 1fr;gap:16px;margin-top:35px;display:grid}.focus-card{color:#fff;background:#6558e8;border-radius:15px;min-height:257px;display:flex;position:relative;overflow:hidden}.focus-copy{z-index:1;padding:30px 0 26px 30px}.focus-card h2{letter-spacing:-.6px;margin:12px 0 5px;font:600 24px Space Grotesk}.focus-card p{color:#c7c4f7;margin:0;font-size:12px}.timer{align-items:center;gap:12px;margin:25px 0 24px;display:flex}.timer div{flex-direction:column;display:flex}.timer strong{letter-spacing:-2px;font:600 25px DM Mono}.timer span{color:#c2bef8;margin-top:3px;font:9px DM Mono}.timer>b{color:#aaa6f0;margin-top:-12px;font:20px DM Mono}.light-button{color:#5d50d8;background:#fff;padding:11px 14px}.light-button span,.outline-button span{margin-left:12px;font-size:16px}.focus-art{width:44%;height:100%;position:absolute;top:0;right:4%;overflow:hidden}.orbit{border:1px solid #fff3;border-radius:50%;position:absolute;transform:rotate(-31deg)}.orbit-one{width:350px;height:140px;top:65px;left:0}.orbit-two{width:340px;height:170px;top:43px;left:24px;transform:rotate(40deg)}.sun{color:#805acb;background:#f4b953;border-radius:50%;place-items:center;width:82px;height:82px;font:40px Georgia;display:grid;position:absolute;top:94px;left:145px;box-shadow:0 0 0 14px #f4b9531f}.spark{color:#ffd47f;position:absolute}.spark-a{font-size:22px;top:48px;right:20px}.spark-b{font-size:25px;bottom:62px;right:62px}.spark-c{bottom:34px;left:18px}.streak-card{background:#fff;border:1px solid #e7e9f0;border-radius:15px;padding:27px 27px 20px;position:relative}.streak-icon{color:#f1775d;background:#fff0eb;border-radius:9px;padding:8px;font-size:19px;position:absolute;top:23px;right:25px}.streak-number{color:#252735;margin-top:13px;font:600 38px Space Grotesk}.streak-number span{color:#9699a8;font:500 13px DM Sans}.streak-card p{color:#9295a5;margin:0;font-size:12px}.week{color:#a6a8b5;text-align:center;justify-content:space-between;margin-top:28px;font:10px DM Mono;display:flex}.week span{border-radius:50%;place-items:center;width:25px;height:25px;display:grid}.week .today{color:#fff;background:#6558e8;box-shadow:0 0 0 4px #eae8ff}.section-heading{align-items:center;margin-top:43px}.section-heading h2,.panel-heading h2{letter-spacing:-.3px;margin:0 0 4px;font:600 17px Space Grotesk}.text-button{color:#777a8d;cursor:pointer;background:0 0;border:0;font:500 11px DM Sans}.text-button span{color:#a4a6b3;margin-left:8px}.stats-grid{grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px;display:grid}.stat-card{border-radius:13px;min-height:147px;padding:18px 19px 17px}.stat-top{justify-content:space-between;align-items:center;display:flex}.stat-icon{color:#6053d7;font-size:19px}.mint-card .stat-icon{color:#37a77d}.trend{color:#4cae89;font-weight:700}.stat-label{color:#737689;margin-top:14px;font-size:11px}.stat-value{color:#252735;margin-top:3px;font:600 24px Space Grotesk}.stat-detail{color:#8e91a2;margin-top:6px;font-size:10px}.lower-grid{grid-template-columns:1.1fr 1fr;gap:16px;margin-top:41px;display:grid}.pill{color:#685add;background:#f0efff;border-radius:20px;padding:7px 10px;font:10px DM Mono}.quiz-question{align-items:flex-start;gap:18px;margin:28px 0 22px;display:flex}.quiz-number{color:#aaaaba;padding-top:2px;font:500 12px DM Mono}.quiz-question h3{max-width:360px;margin:9px 0 0;font:500 15px/1.45 Space Grotesk}.answer-grid{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.answer-grid button{color:#676a7b;cursor:pointer;background:#fff;border:1px solid #e4e5ed;border-radius:7px;height:40px;font:500 13px DM Sans}.quiz-footer{color:#a1a3b0;border-top:1px solid #f0f0f4;justify-content:space-between;align-items:center;margin-top:24px;padding-top:17px;font-size:10px;display:flex}.outline-button{color:#6357d8;background:#fff;border:1px solid #dcdce8;padding:9px 12px}.leader-row,.your-rank{align-items:center;gap:11px;padding:9px 0;display:flex}.rank{text-align:center;color:#a4a6b2;width:14px;font:11px DM Mono}.leader-avatar{border-radius:50%;place-items:center;width:29px;height:29px;font-size:9px;font-weight:700;display:grid}.leader-avatar.purple{color:#6558d9;background:#eeecff}.leader-avatar.mint{color:#29936f;background:#dcf4ea}.leader-avatar.peach{color:#d87d59;background:#ffebe2}.leader-avatar.you{color:#c86e5c;background:#ffe6df}.leader-row strong,.your-rank strong{flex:1;font-size:12px;font-weight:500}.points small{color:#a4a6b2;font-size:9px}.your-rank{background:#f7f6ff;border-radius:8px;margin:15px -11px -5px;padding:11px}.your-rank .rank{color:#6659dc}@media (width<=1150px){.content-wrap,.topbar{padding-left:30px;padding-right:30px}.hero-grid{grid-template-columns:1.5fr 1fr}.focus-art{right:-10%}}:root{color:#171717;background:#ededeb;font-family:Arial Narrow,DM Sans,Arial,sans-serif}body,.app-shell{background:#ededeb}.sidebar{background:linear-gradient(90deg,#111 0 34px,#f2f2ef 34px 100%);border-right:2px solid #1c1c1c;width:242px;padding:22px 9px 14px 45px;position:relative}.sidebar:before{content:"⌂\a ▣\a ＋\a ◈\a %\a ◷\a ⚙";white-space:pre;color:#c92c2c;text-align:center;z-index:1;width:15px;font:15px/32px DM Mono;position:absolute;top:21px;left:10px}.brand{text-transform:uppercase;letter-spacing:-.5px;color:#111;padding:0 0 24px;font-family:Impact,Arial Narrow,sans-serif;font-size:21px}.brand-mark{display:none}.brand-accent{color:#e52b25}.workspace-switcher{background:0 0;border:0;border-bottom:1px solid #d8d8d4;border-radius:0;margin:0 0 20px;padding:8px 7px 15px}.workspace-avatar{color:#fff;background:#e52b25;border-radius:0;width:25px;height:25px}.workspace-switcher strong,.workspace-switcher span{text-transform:uppercase;font-size:11px}.workspace-switcher strong{font-weight:700}.workspace-switcher div:nth-child(2) span{color:#888;font-size:9px}.chevron{color:#111;font-weight:700}.nav-label{color:#787878;letter-spacing:1px;padding:0 9px 8px;font:700 9px DM Mono}.nav-label.spaced{margin-top:27px}.nav-item,.subject-list button,.support-link{color:#3b3b3b;text-transform:uppercase;border-left:3px solid #0000;border-radius:0;gap:10px;padding:10px 9px;font:700 10px DM Mono}.nav-item:hover,.subject-list button:hover{color:#111;background:#e6e6e2}.nav-item.active{color:#111;background:#e6e6e2;border-left-color:#ef332b}.nav-item.active .icon{color:#111}.icon{font-size:15px}.nav-count,.subject-count{color:#777;font-size:9px}.subject-list button{padding:8px 9px}.subject-dot{border-radius:0;width:7px;height:7px}.sidebar-bottom{margin-top:auto}.support-link{border-top:1px solid #d8d8d4;margin-bottom:13px;padding-top:15px}.profile-row{border-top:1px solid #d8d8d4;padding:13px 4px 0}.profile-avatar,.top-avatar{color:#fff;background:#111;border-radius:0;width:27px;height:27px;font-size:9px}.profile-row strong,.profile-row span{text-transform:uppercase;font-size:10px}.topbar{background:#f7f7f4;border-bottom:2px solid #1b1b1b;height:64px;padding:0 33px}.breadcrumb{text-transform:uppercase;color:#777;font:700 10px DM Mono}.breadcrumb b{color:#a2a2a2}.breadcrumb strong{color:#111}.top-actions{gap:15px}.search{color:#777;text-transform:uppercase;background:#fff;border:1px solid #242424;border-radius:0;padding:8px 10px;font:10px DM Mono}.search .icon{font-size:16px}.search kbd{color:#222;background:#eee;border:0;margin-left:10px}.bell{color:#111}.top-avatar{border:0}.content-wrap{max-width:1240px;padding:34px 40px 50px}.welcome-row h1{text-transform:uppercase;letter-spacing:.2px;margin:10px 0 4px;font-family:Impact,Arial Narrow,sans-serif;font-size:31px}.welcome-row p,.section-heading p,.panel-heading p{text-transform:uppercase;color:#727272;font-size:11px}.eyebrow{letter-spacing:1.1px;color:#6a6a6a;font:700 9px DM Mono}.primary-button,.light-button,.outline-button{color:#fff;text-transform:uppercase;background:#ed2d25;border:2px solid #161616;border-radius:0;font:700 10px DM Mono;box-shadow:3px 3px #161616}.primary-button{margin-top:12px}.hero-grid{gap:17px;margin-top:30px}.focus-card{background:#151515;border:2px solid #111;border-radius:0;min-height:238px}.focus-card h2{text-transform:uppercase;letter-spacing:.3px;font-family:Impact,Arial Narrow,sans-serif;font-size:25px}.focus-card p{color:#c8c8c8;text-transform:uppercase;font-size:10px}.eyebrow.light{color:#ef4a42}.timer strong{color:#f1f1ec;font-family:DM Mono}.timer span{color:#aaa}.light-button{color:#111;box-shadow:none;background:#f2f2ef;border-color:#eee}.streak-card{background:#f8f8f5;border:2px solid #1a1a1a;border-radius:0;padding:25px}.streak-icon{color:#fff;background:#ed2d25;border-radius:0}.streak-number{text-transform:uppercase;font-family:Impact,Arial Narrow,sans-serif;font-size:41px}.streak-card p{text-transform:uppercase;font-size:10px}.week span{border-radius:0;font-size:9px}.week .done{color:#fff;background:#111}.week .today{color:#fff;box-shadow:none;background:#ed2d25}.section-heading{margin-top:38px}.section-heading h2,.panel-heading h2{text-transform:uppercase;letter-spacing:.2px;font-family:Impact,Arial Narrow,sans-serif;font-size:19px}.text-button{text-transform:uppercase;color:#111;font:700 10px DM Mono}.stats-grid{gap:12px;margin-top:16px}.stat-card{border:2px solid #191919;border-radius:0;min-height:135px;padding:16px 17px 14px}.lavender,.mint-card,.peach-card,.blue-card{background:#f7f7f3}.stat-icon{color:#111!important}.stat-label,.stat-detail{text-transform:uppercase;color:#666;font-size:9px}.stat-value{text-transform:uppercase;font-family:Impact,Arial Narrow,sans-serif;font-size:28px}.trend{color:#e52b25}.lower-grid{gap:17px;margin-top:36px}.panel{background:#f8f8f5;border:2px solid #191919;border-radius:0;padding:22px}.pill{color:#fff;text-transform:uppercase;background:#111;border-radius:0;font:9px DM Mono}.quiz-question{margin:26px 0 20px}.quiz-question h3{text-transform:uppercase;font-family:Arial Narrow,Arial,sans-serif;font-size:16px}.answer-grid button{color:#111;background:#f8f8f5;border:2px solid #191919;border-radius:0;font:700 12px DM Mono}.answer-grid button:hover,.answer-grid .correct{color:#fff;background:#ed2d25;border-color:#ed2d25}.quiz-footer{color:#666;text-transform:uppercase;border-top:1px solid #c9c9c5;font:9px DM Mono}.outline-button{color:#111;background:#f8f8f5;box-shadow:3px 3px #111}.leader-list{margin-top:22px}.leader-row,.your-rank{padding:10px 0}.leader-avatar{border-radius:0;color:#fff!important;background:#111!important}.leader-row strong,.your-rank strong{text-transform:uppercase;font:700 10px DM Mono}.points{color:#111;font:700 10px DM Mono}.your-rank{color:#fff;background:#ed2d25;margin:14px -9px -4px;padding:11px}.your-rank .leader-avatar{color:#111!important;background:#f4f4f0!important}.focus-art .sun{color:#fff;background:#ed2d25;box-shadow:0 0 0 14px #ed2d252e}.focus-art .orbit{border-color:#ffffff4d}.math-talk-lockup{white-space:nowrap;vertical-align:middle;align-items:center;gap:8px;display:inline-flex}.math-talk-logo{object-fit:contain;flex:none;width:37px;height:37px;display:block}.math-talk-name{color:#111;letter-spacing:-.6px;align-items:center;height:1em;font:700 20px/1 Arial Narrow,Arial,sans-serif;display:inline-flex;transform:translateY(1px)}.math-talk-lockup.dark .math-talk-name{color:#fff}.math-talk-lockup.dark .math-talk-name span{color:inherit}.math-talk-lockup.red .math-talk-name{color:#111}.wordmark .math-talk-lockup{color:#111;gap:7px}.landing-footer .wordmark .math-talk-lockup{color:#fff}.wordmark .math-talk-logo{width:38px;height:38px}.wordmark .math-talk-name{font-size:21px}.countdown-brand>.math-talk-lockup{color:inherit;width:auto;height:auto;font:inherit;text-transform:none;background:0 0;justify-content:center;margin:0}.countdown-brand .math-talk-logo{width:38px;height:38px}.brand .math-talk-lockup{gap:8px}.brand .math-talk-logo{width:38px;height:38px}.brand .math-talk-name{font-size:21px}@media (width<=520px){.wordmark .math-talk-logo{width:32px;height:32px}.wordmark .math-talk-name{font-size:18px}.countdown-brand .math-talk-logo{width:32px;height:32px}.countdown-brand .math-talk-name{font-size:18px}}.deck-reels{gap:28px}.deck-reels .reels-intro p{margin:0 0 18px}.reels-viewer{touch-action:pan-y;grid-template-columns:48px minmax(0,1fr) 48px;align-items:center;gap:16px;width:min(100%,608px);min-width:0;margin:28px auto 0;display:grid;position:relative}.reels-track{scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:none;background:#f2e6d3;border:3px solid #050505;gap:0;width:100%;min-height:0;display:flex;position:relative;overflow:auto hidden;box-shadow:5px 5px #050505}.reels-track::-webkit-scrollbar{display:none}.reel-card{box-sizing:border-box;scroll-snap-align:start;scroll-snap-stop:always;background:#f2e6d3;flex:0 0 100%;min-width:0}.reel-player{aspect-ratio:9/16;background:#050505;position:relative;overflow:hidden}.reel-player video{object-fit:cover;width:100%;height:100%;display:block}.reel-error{color:#050505;text-align:center;background:#f2e6d3;padding:16px;position:absolute;inset:30% 12px auto}.reel-error a{color:inherit;text-decoration:underline}.reel-swipe-edge{z-index:1;touch-action:pan-y;cursor:grab;width:26px;position:absolute;top:0;bottom:48px}.reel-swipe-edge-left{left:0}.reel-swipe-edge-right{right:0}.reels-arrow{color:#050505;cursor:pointer;background:#f2e6d3;border:2px solid #050505;place-items:center;width:48px;height:48px;padding:0;transition:transform .12s ease-out;display:grid;box-shadow:3px 3px #050505}.reels-arrow:hover:enabled{background:#df0}.reels-arrow:active:enabled{transform:translate(2px,2px);box-shadow:1px 1px #050505}.reels-arrow:disabled{opacity:.4;cursor:default;box-shadow:none}.reels-position{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.deck-reels :focus-visible{outline-offset:4px;outline:3px solid #050505}@media (width>=901px){.deck-method.deck-reels{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:center;gap:clamp(28px,4vw,60px);padding-block:20px;display:grid}.deck-reels .deck-section-head{flex-direction:column;align-items:flex-start;gap:20px;display:flex}.deck-reels .deck-section-head h2{margin-block:12px;font-size:clamp(40px,4.3vw,66px);line-height:1}.reels-viewer{width:min(100%,608px,56.25dvh + 60.875px);margin-block:0}}@media (width<=900px){.deck-reels .deck-section-head{gap:18px}}@media (width<=560px){.reels-viewer{grid-template-columns:32px minmax(0,1fr) 32px;gap:8px;width:calc(100% + 24px);max-width:none;margin-inline:-12px}.reels-arrow{width:32px;height:40px}.reels-arrow svg{width:20px;height:20px}}@media (prefers-reduced-motion:reduce){.reels-arrow{transition:none}}body{min-width:0}.site-shell{color:#151515;background:#eeefec;min-height:100vh;display:flex}.utility-rail{color:#e82e28;background:#101010;flex-direction:column;flex-shrink:0;align-items:center;gap:22px;width:43px;padding:15px 0;display:flex}.utility-rail a{color:#b82a28;font:14px DM Mono;text-decoration:none}.utility-rail a:hover{color:#fff}.rail-logo{border:1px solid #e82e28;border-radius:50%;place-items:center;width:23px;height:23px;margin-bottom:13px;font:17px Georgia;display:grid}.rail-bottom{letter-spacing:1px;text-align:center;color:#656565;writing-mode:vertical-rl;margin-top:auto;font:8px/1.35 DM Mono;transform:rotate(180deg)}.landing-page{background:#f1f2ef;width:calc(100% - 43px)}.landing-header{background:#f7f7f4;border-bottom:2px solid #171717;align-items:center;gap:35px;height:72px;padding:0 clamp(20px,5vw,78px);display:flex}.wordmark{color:#111;letter-spacing:-.6px;text-transform:uppercase;white-space:nowrap;font:700 21px Arial Narrow,Arial,sans-serif;text-decoration:none}.wordmark>span:last-child{color:#e52e27}.wordmark-mark{color:#fff;text-transform:none;background:#e52e27;place-items:center;width:25px;height:25px;margin-right:5px;font:18px Georgia;display:inline-grid}.main-nav{align-items:center;gap:26px;margin-left:auto;display:flex}.main-nav a,.landing-footer a{text-transform:uppercase;color:#464646;font:700 10px DM Mono;text-decoration:none}.main-nav a:hover,.landing-footer a:hover{color:#e52e27}.header-actions{align-items:center;gap:13px;display:flex}.plain-link{color:#111;text-transform:uppercase;cursor:pointer;background:0 0;border:0;font:700 10px DM Mono}.plain-link span,.red-button span{margin-left:7px;font-size:15px}.red-button{color:#fff;text-transform:uppercase;cursor:pointer;background:#ed2f27;border:2px solid #111;border-radius:0;padding:11px 14px;font:700 10px DM Mono;box-shadow:3px 3px #111}.red-button.large{padding:14px 17px}.section-kicker{letter-spacing:1.1px;color:#e12d27;font:700 10px DM Mono}.hero{background:#f1f2ef;border-bottom:2px solid #111;grid-template-columns:minmax(0,1.05fr) minmax(410px,.95fr);gap:20px;min-height:610px;padding:85px clamp(30px,8vw,130px) 78px;display:grid;overflow:hidden}.hero-copy{min-width:0}.hero h1,.section h2{letter-spacing:-2px;text-transform:uppercase;margin:22px 0;font:700 clamp(45px,6.4vw,88px)/.88 Arial Narrow,Impact,sans-serif}.hero h1 em,.section h2 em{color:#e52d27;font-style:normal}.hero-lede{color:#595b5c;max-width:490px;margin:0;font:500 17px/1.5 Arial Narrow,Arial,sans-serif}.hero-actions{align-items:center;gap:24px;margin-top:31px;display:flex}.watch-link{text-transform:uppercase;color:#111;font:700 10px DM Mono;text-decoration:none}.play{border:1px solid #111;border-radius:50%;place-items:center;width:23px;height:23px;margin-right:7px;font-size:8px;display:inline-grid}.hero-proof{align-items:center;gap:11px;margin-top:66px;display:flex}.mini-avatars{display:flex}.mini-avatars span{color:#fff;background:#111;border:2px solid #f1f2ef;border-radius:50%;place-items:center;width:28px;height:28px;margin-left:-5px;font:700 8px DM Mono;display:grid}.mini-avatars span:first-child{background:#e52d27;margin-left:0}.mini-avatars span:nth-child(2){background:#888}.mini-avatars span:nth-child(3){background:#d9ab4b}.mini-avatars span:last-child{color:#111;background:#f1f2ef;border-color:#111}.hero-proof strong,.hero-proof small{text-transform:uppercase;font:700 10px DM Mono;display:block}.hero-proof small{color:#767676;margin-top:4px;font-weight:400}.hero-visual{background:#191919;border:2px solid #111;min-height:420px;position:relative;overflow:hidden}.visual-grid{opacity:.6;background-image:linear-gradient(#ffffff17 1px,#0000 1px),linear-gradient(90deg,#ffffff17 1px,#0000 1px);background-size:42px 42px;position:absolute;inset:0}.visual-tag{z-index:2;color:#fff;letter-spacing:1px;font:700 10px/1.3 DM Mono;position:absolute}.tag-top{top:27px;left:28px}.tag-top b{color:#ed2f27;font-size:15px}.tutor-card{z-index:2;background:#f1f2ef;border:2px solid #111;align-items:flex-end;width:67%;height:170px;padding:15px;display:flex;position:absolute;bottom:54px;left:12%}.tutor-photo{color:#e8e9e5;background:#6f777b;border:2px solid #111;place-items:center;width:100px;height:125px;font:700 33px Arial Narrow;display:grid;position:absolute;bottom:14px;left:17px}.tutor-caption{margin-left:118px}.tutor-caption span,.tutor-caption small{text-transform:uppercase;color:#e72e27;font:700 9px DM Mono;display:block}.tutor-caption strong{text-transform:uppercase;margin:6px 0;font:700 24px Arial Narrow;display:block}.tutor-caption small{color:#555;font-weight:400}.verified{color:#fff;background:#e82e28;border-radius:50%;place-items:center;width:25px;height:25px;font-weight:700;display:grid;position:absolute;top:13px;right:13px}.equation-card{z-index:3;background:#f1f2ef;border:2px solid #111;padding:13px 15px;position:absolute;top:55px;right:8%;transform:rotate(5deg);box-shadow:4px 4px #e72e28}.equation-card span,.equation-card small{text-transform:uppercase;color:#666;font:8px DM Mono;display:block}.equation-card strong{margin:9px 0 7px;font:700 20px Georgia;display:block}.visual-stamp{color:#ed2f27;letter-spacing:1px;text-align:center;font:700 12px/1 DM Mono;position:absolute;bottom:18px;right:21px;transform:rotate(-9deg)}.visual-stamp b{font-size:20px}.trust-strip{color:#fff;text-transform:uppercase;background:#111;justify-content:center;align-items:center;gap:18px;min-height:62px;padding:15px clamp(20px,6vw,90px);font:10px DM Mono;display:flex}.trust-strip strong{color:#ed2f27;font-size:15px}.trust-strip i{color:#ed2f27;font-size:18px;font-style:normal}.trust-strip .strip-note{color:#898989;margin-left:auto;font-size:9px}.section{padding:105px clamp(30px,8vw,130px)}.section-intro{grid-template-columns:1fr 1fr;align-items:end;gap:80px;display:grid}.section h2{margin:18px 0 0;font-size:clamp(42px,5vw,68px)}.section-intro>p,.story-copy>p,.results-heading>p{color:#5f6060;max-width:470px;margin:0 0 5px;font:500 16px/1.55 Arial Narrow,Arial,sans-serif}.class-grid{grid-template-columns:repeat(3,1fr);gap:15px;margin-top:50px;display:grid}.class-card{background:#f8f8f4;border:2px solid #111;flex-direction:column;min-height:280px;padding:24px 23px 19px;display:flex;position:relative}.card-number{color:#999;font:700 10px DM Mono}.card-1 .card-number{color:#ffaaa5}.class-type{color:#e62d27;letter-spacing:1px;margin-top:29px;font:700 10px DM Mono}.class-card h3{text-transform:uppercase;letter-spacing:-.5px;margin:11px 0 7px;font:700 28px/1 Arial Narrow}.class-card p{color:#666;margin:0;font:500 13px Arial Narrow}.class-meta{color:#686968;text-transform:uppercase;border-top:1px solid #c8c8c3;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;font:9px DM Mono;display:flex}.card-1 .class-meta{border-color:#f18480}.class-meta strong{color:inherit;text-align:right;font-weight:700}.class-bottom{justify-content:space-between;align-items:center;margin-top:20px;display:flex}.spots{text-transform:uppercase;font:9px DM Mono}.spots i{background:#e62d27;width:7px;height:7px;margin-right:6px;display:inline-block}.card-1 .spots i{background:#fff}.class-bottom button{color:inherit;text-transform:uppercase;cursor:pointer;background:0 0;border:0;font:700 10px DM Mono}.class-bottom button span{margin-left:5px;font-size:16px}.story-section{color:#fff;background:#111;grid-template-columns:1fr 1fr;gap:90px;display:grid}.story-panel{background:linear-gradient(135deg,#1d1d1d,#111);border:2px solid #ed2f27;flex-direction:column;justify-content:space-between;min-height:370px;padding:36px;display:flex}.story-quote{text-transform:uppercase;max-width:460px;font:700 clamp(27px,3vw,42px)/1.08 Arial Narrow}.story-signature{align-items:center;gap:11px;display:flex}.signature-avatar{background:#ed2f27;place-items:center;width:36px;height:36px;font:700 10px DM Mono;display:grid}.story-signature strong,.story-signature span{text-transform:uppercase;font:700 11px DM Mono;display:block}.story-signature span{color:#999;margin-top:4px;font-weight:400}.story-copy{padding-top:12px}.story-copy .section-kicker{color:#ed2f27}.story-copy h2{margin-bottom:24px}.story-copy>p{color:#aaa}.story-points{text-transform:uppercase;flex-direction:column;gap:15px;margin-top:30px;font:700 11px DM Mono;display:flex}.story-points b{color:#ed2f27;margin-right:12px}.results-section{color:#111;background:#ed2f27}.results-section .section-kicker{color:#111}.results-heading{grid-template-columns:1fr 1fr;align-items:end;gap:80px;display:grid}.results-heading h2{margin-bottom:0}.results-heading h2 em{color:#fff}.results-heading p{color:#421615}.results-grid{border-top:2px solid #111;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:66px;padding-top:20px;display:grid}.results-grid div{flex-direction:column;display:flex}.results-grid strong{text-transform:uppercase;font:700 35px Arial Narrow}.results-grid span{text-transform:uppercase;margin-top:7px;font:700 9px DM Mono}.tools-grid{grid-template-columns:repeat(3,1fr);gap:15px;margin-top:48px;display:grid}.tool-card{color:#111;background:#f8f8f4;border:2px solid #111;align-items:flex-start;gap:15px;min-height:155px;padding:20px;text-decoration:none;display:flex;position:relative}.tool-card.red-tool{color:#fff;background:#111}.tool-card.red-tool p{color:#aaa}.tool-icon{color:#ed2f27;font:24px Georgia}.tool-card>div{flex:1}.tool-card span:not(.tool-icon){letter-spacing:1px;color:#e82e28;font:700 9px DM Mono}.red-tool span:not(.tool-icon){color:#ff817b}.tool-card h3{text-transform:uppercase;margin:11px 0 5px;font:700 22px Arial Narrow}.tool-card p{color:#666;margin:0;font:500 12px/1.4 Arial Narrow}.tool-card>b{font-size:20px;font-weight:400}.contact-section{background:#f8f8f4;border-top:2px solid #111;grid-template-columns:1fr 1fr;align-items:center;gap:90px;display:grid}.contact-section h2{margin-bottom:0}.contact-box{border-left:2px solid #ed2f27;padding-left:26px}.contact-box>p{color:#555;max-width:430px;font:500 16px/1.45 Arial Narrow}.contact-form{margin:23px 0 9px;display:flex}.contact-form input{background:#fff;border:2px solid #111;border-right:0;border-radius:0;outline:none;flex:1;min-width:0;padding:14px;font:11px DM Mono}.contact-form input:focus{border-color:#ed2f27}.contact-box small{text-transform:uppercase;color:#888;font:9px DM Mono}.form-notice{color:#e72e27;text-transform:uppercase;margin-bottom:8px;font:10px DM Mono}.landing-footer{color:#777;text-transform:uppercase;background:#111;border-top:2px solid #111;align-items:center;gap:28px;min-height:76px;padding:0 clamp(20px,8vw,130px);font:9px DM Mono;display:flex}.landing-footer .wordmark{color:#fff;margin-right:auto}.landing-footer div{gap:20px;display:flex}.landing-footer a{color:#aaa}.landing-footer .wordmark-mark{color:#fff}@media (width<=900px){.main-nav{display:none}.hero{grid-template-columns:1fr;padding-top:62px}.hero-visual{min-height:370px}.section-intro,.results-heading,.contact-section{grid-template-columns:1fr;gap:25px}.class-grid,.tools-grid{grid-template-columns:1fr}.story-section{grid-template-columns:1fr;gap:45px}.story-panel{min-height:310px}.results-grid{grid-template-columns:repeat(2,1fr)}.trust-strip .strip-note{display:none}}@media (width<=560px){.landing-header{padding:0 17px}.header-actions .plain-link{display:none}.hero{padding:52px 20px}.hero h1{font-size:49px}.hero-lede{font-size:15px}.hero-proof{margin-top:42px}.section{padding:70px 20px}.section h2{font-size:47px}.contact-form{display:block}.contact-form input{border-right:2px solid #111;width:100%;margin-bottom:10px}.class-grid{margin-top:32px}.trust-strip{gap:8px;font-size:8px}.trust-strip strong{font-size:11px}.landing-footer{flex-wrap:wrap;padding:20px}.landing-footer>span{order:3}.landing-footer div{margin-left:auto}}.class-card{transition:background-color .18s,color .18s}.class-card.card-1{color:#151515;background:#f8f8f4}.class-card.card-1 .class-type,.class-card.card-1 p,.class-card.card-1 .class-meta{color:inherit}.class-card.card-1 .class-type{color:#e62d27}.class-card.card-1 .card-number{color:#999}.class-card.card-1 .class-meta{border-color:#c8c8c3}.class-card.card-1 .spots i{background:#e62d27}.class-card:hover{color:#fff;background:#e93129}.class-card:hover .class-type,.class-card:hover p,.class-card:hover .class-meta{color:#ffd7d4}.class-card:hover .class-type{color:#fff}.class-card:hover .card-number{color:#ffaaa5}.class-card:hover .class-meta{border-color:#f18480}.class-card:hover .spots i{background:#fff}.tutor-photo{overflow:hidden}.tutor-photo img{object-fit:cover;object-position:center top;width:100%;height:100%;display:block}.signature-avatar{overflow:hidden}.signature-avatar img{object-fit:cover;object-position:center top;width:100%;height:100%;display:block}@media (width>=901px){.hero{box-sizing:border-box;height:calc(100vh - 134px);min-height:0}}@media (width>=901px) and (height<=760px){.hero{padding-top:48px;padding-bottom:42px}.hero-visual{min-height:0}.hero-proof{margin-top:36px}}.deck-shell:has(.booking-overlay)+.math-chat-widget{visibility:hidden}.booking-overlay{z-index:1000;background:#111111bd;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.booking-modal{color:#151515;background:#f8f8f4;border:2px solid #111;width:min(100%,660px);max-height:calc(100vh - 24px);padding:28px 36px 24px;position:relative;overflow-y:auto;box-shadow:8px 8px #ed2f27}.booking-close{color:#111;cursor:pointer;background:#f8f8f4;border:2px solid #111;width:31px;height:31px;font:22px/1 Arial,sans-serif;position:absolute;top:14px;right:17px}.booking-close:hover,.booking-close:focus-visible{color:#fff;background:#ed2f27}.booking-modal h2{letter-spacing:-1.5px;text-transform:uppercase;max-width:480px;margin:10px 0 6px;font:700 clamp(36px,5vw,54px)/.9 Arial Narrow,Impact,sans-serif}.booking-intro{color:#5f6060;max-width:490px;margin:0 0 14px;font:500 15px/1.45 Arial Narrow,Arial,sans-serif}.booking-selected{background:#fff;border:2px solid #111;justify-content:space-between;align-items:center;gap:15px;margin-bottom:15px;padding:9px 14px;display:flex}.booking-selected span,.booking-selected strong{text-transform:uppercase;font:700 10px DM Mono}.booking-selected span{color:#e52d27}.booking-selected strong{text-align:right}.booking-form{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 15px;display:grid}.booking-form label{color:#111;text-transform:uppercase;flex-direction:column;gap:5px;font:700 9px DM Mono;display:flex}.booking-form label span{color:#777;font-weight:400}.booking-form input,.booking-form select,.booking-form textarea{color:#111;background:#fff;border:2px solid #111;border-radius:0;outline:none;width:100%;padding:10px;font:12px DM Mono}.booking-form textarea{resize:vertical;min-height:62px}.booking-form input:focus,.booking-form select:focus,.booking-form textarea:focus{border-color:#ed2f27}.booking-full{grid-column:1/-1}.booking-submit{grid-column:1/-1;justify-self:start;margin-top:2px}.booking-form-actions{grid-column:1/-1;align-items:stretch;gap:10px;margin-top:2px;display:flex}.booking-form-actions .booking-submit,.booking-whatsapp{height:42px;min-height:42px;margin-top:0}.booking-form-actions .booking-submit{margin-top:0}.booking-whatsapp{color:#111;text-transform:uppercase;white-space:nowrap;background:#25d366;border:2px solid #111;justify-content:center;align-items:center;gap:8px;min-height:38px;padding:10px 14px;font:700 10px DM Mono;text-decoration:none;display:inline-flex;box-shadow:3px 3px #111}.booking-whatsapp:hover,.booking-whatsapp:focus-visible{color:#fff;background:#111}.booking-success{text-align:center;padding:24px 18px 12px}.booking-success-mark{color:#fff;background:#ed2f27;border:2px solid #111;place-items:center;width:52px;height:52px;margin:0 auto 22px;font:700 26px Arial,sans-serif;display:grid}.booking-success h2{margin-left:auto;margin-right:auto}.booking-success p{color:#5f6060;max-width:430px;margin:0 auto 26px;font:500 15px/1.5 Arial Narrow,Arial,sans-serif}@media (width<=560px){.booking-overlay{padding:12px}.booking-modal{max-height:94vh;padding:26px 18px 20px;box-shadow:5px 5px #ed2f27}.booking-modal h2{padding-right:35px;font-size:43px}.booking-form{grid-template-columns:1fr}.booking-full,.booking-submit,.booking-form-actions{grid-column:auto}.booking-form-actions{flex-direction:column;align-items:stretch}.booking-submit,.booking-whatsapp{width:100%}.booking-selected{flex-direction:column;align-items:flex-start;gap:6px}.booking-selected strong{text-align:left}}.social-box{border-left:2px solid #ed2f27;padding-left:26px}.social-box>p{color:#555;max-width:470px;margin:0 0 23px;font:500 16px/1.45 Arial Narrow,Arial,sans-serif}.social-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;max-width:520px;display:grid}.social-link{color:#111;text-transform:uppercase;background:#fff;border:2px solid #111;justify-content:space-between;align-items:center;gap:10px;padding:14px 15px;font:700 10px DM Mono;text-decoration:none;transition:background-color .18s,color .18s;display:flex}.social-link span{flex:1;font-size:10px}.social-link svg{flex:none;width:19px;height:19px}.social-link b{font:400 15px Arial,sans-serif}.social-link:hover,.social-link:focus-visible{color:#fff;background:#ed2f27}.social-tiktok:hover,.social-tiktok:focus-visible{color:#fff;background:#111}.social-instagram:hover,.social-instagram:focus-visible{color:#fff;background:#e1306c}.social-youtube:hover,.social-youtube:focus-visible{color:#fff;background:red}.social-facebook:hover,.social-facebook:focus-visible{color:#fff;background:#1877f2}.whatsapp-link{color:#fff;background:#111;grid-column:1/-1}.whatsapp-link:hover,.whatsapp-link:focus-visible{color:#111;background:#25d366}.social-box small{color:#888;text-transform:uppercase;margin-top:17px;font:9px DM Mono;display:block}@media (width<=560px){.social-box{padding-left:18px}.social-links{grid-template-columns:1fr}.whatsapp-link{grid-column:auto}}.tool-card{box-sizing:border-box;grid-template-columns:36px minmax(0,1fr);align-items:start;column-gap:16px;min-height:154px;padding:20px 20px 18px;display:grid}.tool-card .tool-icon{color:#ed2f27;box-sizing:content-box;background:#ed2f270a;border:1.5px solid;width:25px;height:25px;margin-top:0;padding:6px}.tool-card>div{flex-direction:column;align-items:flex-start;min-width:0;min-height:82px;display:flex}.tool-card span:not(.tool-icon){margin-top:2px;line-height:1.2;display:block}.tool-card h3{margin:12px 0 6px;line-height:.98}.tool-card p{margin-top:auto;line-height:1.45}@media (width<=560px){.tool-card{grid-template-columns:34px minmax(0,1fr);column-gap:13px;padding:20px 18px}.tool-card>div{min-height:86px}}.utility-rail{box-sizing:border-box;background:#111;border-right:1px solid #2b2b2b;align-items:stretch;gap:0;width:72px;padding:20px 10px 16px}.landing-page{width:calc(100% - 72px)}.rail-brand{border-bottom:1px solid #383838;place-items:center;min-height:38px;padding-bottom:22px;display:grid}.rail-brand .math-talk-lockup{place-items:center;display:grid}.rail-brand .math-talk-logo{width:29px;height:29px}.rail-brand .math-talk-name{display:none!important}.rail-brand .math-talk-logo{display:block;width:29px!important;height:29px!important}.rail-nav{flex-direction:column;gap:9px;padding-top:0;display:flex}.rail-nav a{color:#a6a6a6;border:1px solid #0000;place-items:center;width:50px;height:50px;text-decoration:none;transition:color .18s,background-color .18s,border-color .18s;display:grid;position:relative}.rail-nav a svg{width:20px;height:20px}.rail-nav a:hover,.rail-nav a:focus-visible{color:#fff;background:#2a2a2a;border-color:#e52d27;outline:none}.rail-nav a span{z-index:5;pointer-events:none;opacity:0;white-space:nowrap;color:#fff;letter-spacing:.7px;text-transform:uppercase;background:#111;padding:8px 9px;font:700 9px DM Mono;transition:opacity .18s,transform .18s;position:absolute;left:calc(100% + 10px);transform:translate(-4px)}.rail-nav a:hover span,.rail-nav a:focus-visible span{opacity:1;transform:translate(0)}.rail-bottom{color:#e52d27;writing-mode:initial;flex-direction:column;align-items:center;gap:8px;margin-top:auto;display:flex;transform:none}.rail-bottom span{letter-spacing:1px;font:700 13px Arial Narrow,Arial,sans-serif}.rail-bottom small{color:#777;letter-spacing:.8px;writing-mode:vertical-rl;font:7px DM Mono;transform:rotate(180deg)}@media (width<=700px){.landing-page{width:100%}}.landing-page{isolation:isolate;background:#f1f0ea;position:relative;overflow:clip}.landing-page:before{content:"";z-index:-1;pointer-events:none;opacity:.22;mix-blend-mode:multiply;background-image:radial-gradient(#11111129 .65px,#0000 .65px);background-size:5px 5px;position:absolute;inset:0}.landing-header{z-index:20;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f7f7f4f0;position:sticky;top:0}.hero h1,.section h2,.class-card h3,.story-quote,.tutor-caption strong,.tool-card h3{font-family:Archivo Narrow,Arial Narrow,Impact,sans-serif}.hero h1{text-wrap:balance;max-width:760px}.hero h1 em,.section h2 em{text-shadow:2px 2px #1111111a}.hero-visual,.class-card,.tool-card,.story-panel,.results-grid div{will-change:transform}.hero-visual{box-shadow:7px 7px #e72e28}.hero-visual:after{content:"LIVE / 01";z-index:4;color:#ffffffb3;letter-spacing:1px;font:700 8px DM Mono;position:absolute;top:18px;right:18px}.visual-grid{transform-origin:50%}.class-card,.tool-card{transition:background-color .22s,color .22s,box-shadow .22s}.class-card:hover,.tool-card:hover{box-shadow:5px 5px #111}.red-button,.paper-direct-grade-button,.paper-upload-grade-button,.paper-download-report{transition:transform .18s,box-shadow .18s,background-color .18s}.red-button:active,.paper-direct-grade-button:active,.paper-upload-grade-button:active,.paper-download-report:active{transform:translate(2px,2px);box-shadow:1px 1px #111}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.deck-page{overscroll-behavior-y:contain;scroll-behavior:smooth;scroll-snap-type:y mandatory;color:#050505;background:#f2e6d3;height:100dvh;min-height:0;scroll-padding-top:78px;overflow:hidden auto}.deck-slide{scroll-snap-align:start;scroll-snap-stop:normal}.deck-header{box-sizing:border-box;z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f2e6d3eb;border-bottom:3px solid #050505;align-items:center;gap:28px;height:78px;min-height:78px;padding:12px clamp(20px,5vw,72px);display:flex;position:sticky;top:0}.deck-brand{color:#050505;flex-shrink:0;text-decoration:none}.deck-nav{align-items:center;gap:20px;margin-left:auto;display:flex}.deck-nav a,.deck-portal-link,.deck-contact-link,.deck-text-link{color:#050505;cursor:pointer;text-transform:uppercase;background:0 0;border:0;font:700 10px DM Mono,monospace;text-decoration:none}.deck-nav a:hover,.deck-contact-link:hover,.deck-text-link:hover{color:#f15e92}.deck-nav a{letter-spacing:.04em;font-size:11px;font-weight:700}.deck-nav a[href=\/notes],.deck-nav a[href=\/pastpapers],.deck-nav a[href=\/countdowns]{font-size:13px;font-weight:900}.deck-nav a.deck-portal-link{box-sizing:border-box;background:#df0;border:2px solid #050505;justify-content:center;align-items:center;width:140px;height:44px;font-size:12px;font-weight:700;transition:transform .18s,box-shadow .18s,background-color .18s;display:inline-flex;box-shadow:4px 4px #050505}.deck-nav a.deck-portal-link:hover,.deck-nav a.deck-portal-link:focus-visible{color:#050505;background:#df0;transform:translate(-3px,-3px);box-shadow:7px 7px #050505}.deck-nav a.deck-portal-link:active{transform:translate(2px,2px);box-shadow:1px 1px #050505}@media (prefers-reduced-motion:reduce){.deck-nav a.deck-portal-link{transition:none}.deck-nav a.deck-portal-link:hover,.deck-nav a.deck-portal-link:focus-visible,.deck-nav a.deck-portal-link:active{transform:none}}.deck-hero,.deck-problem,.deck-method,.deck-dont,.deck-formats,.deck-tools,.deck-proof,.deck-contact{padding:clamp(72px,9vw,130px) clamp(24px,8vw,130px)}.deck-hero{background:#ff7fa8 radial-gradient(#0000001a 1px,#0000 1px) 0 0/14px 14px;border-bottom:3px solid #050505;grid-template-columns:minmax(0,1fr) minmax(390px,.85fr);align-items:center;gap:clamp(36px,7vw,110px);min-height:680px;display:grid}.deck-kicker,.deck-stage-label,.deck-card-tag,.deck-format>span,.deck-tool>span,.deck-proof-grid span,.deck-proof-line,.deck-side-number{letter-spacing:1px;text-transform:uppercase;font:700 10px/1.3 DM Mono,monospace;display:block}.deck-hero-copy h1,.deck-section-head h2,.deck-problem-copy h2,.deck-dont-title h2,.deck-tools-intro h2,.deck-proof-copy h2,.deck-contact h2{color:#050505;letter-spacing:.2px;text-transform:uppercase;margin:20px 0 25px;font:900 clamp(54px,7.5vw,118px)/.81 Impact,Arial Black,sans-serif}.deck-hero-copy h1 mark,.deck-section-head h2 mark,.deck-problem-copy h2 mark,.deck-dont-title h2 mark,.deck-tools-intro h2 mark,.deck-proof-copy h2 mark,.deck-contact h2 mark{color:#050505;background:#df0;padding:0 .08em;display:inline;box-shadow:7px 0 #df0,-7px 0 #df0}.deck-hero-copy>p,.deck-section-head>p,.deck-problem-copy>p,.deck-tools-intro>p,.deck-proof-copy>p,.deck-contact>div>p{color:#493f39;max-width:540px;font:500 17px/1.45 Space Grotesk,sans-serif}.deck-actions,.deck-contact-actions{flex-wrap:wrap;align-items:center;gap:20px;margin-top:34px;display:flex}.deck-button{cursor:pointer;text-transform:uppercase;border:3px solid #050505;border-radius:13px;padding:15px 18px;font:700 10px DM Mono,monospace;box-shadow:4px 4px #050505}.deck-button-dark{color:#fff;background:#050505}.deck-button-dark:hover{color:#050505;background:#df0}.deck-button:active{transform:translate(3px,3px);box-shadow:1px 1px #050505}.deck-button span,.deck-text-link span{margin-left:8px;font-size:15px}.deck-proof-line{color:#493f39;align-items:center;gap:13px;margin-top:68px;display:flex}.deck-proof-line strong{color:#050505}.deck-proof-line span{letter-spacing:0;text-transform:none;border-left:1px solid #493f39;padding-left:13px;font-weight:400}.deck-stage{background:#91dfff;border:3px solid #050505;min-height:500px;position:relative;overflow:hidden;box-shadow:9px 9px #050505}.deck-grid{background-image:linear-gradient(#0000001f 2px,#0000 2px),linear-gradient(90deg,#0000001f 2px,#0000 2px);background-size:38px 38px;position:absolute;inset:-40px;transform:rotate(-4deg)}.deck-stage-label{z-index:2;position:absolute;top:22px;left:24px}.deck-stage-label b{color:#f15e92}.deck-note{z-index:3;background:#f2e6d3;border:3px solid #050505;position:absolute;box-shadow:6px 6px #050505}.deck-note-main{width:67%;min-height:240px;padding:20px;bottom:60px;left:11%;transform:rotate(-4deg)}.deck-note-main>span,.deck-note-small>span{text-transform:uppercase;font:700 9px DM Mono,monospace}.deck-note-main strong{text-transform:uppercase;margin-top:28px;font:900 32px/.86 Impact,Arial Black,sans-serif;display:block}.deck-note-main small{text-transform:uppercase;max-width:170px;margin-top:12px;font:500 10px/1.3 DM Mono,monospace;display:block}.deck-note-photo{background:#ff7fa8;border:3px solid #050505;width:110px;height:145px;position:absolute;bottom:14px;right:14px;overflow:hidden}.deck-note-photo img{object-fit:cover;filter:grayscale()contrast(1.1);width:100%;height:100%}.deck-note-small{width:180px;padding:17px;top:96px;right:7%;transform:rotate(6deg)}.deck-note-small strong{text-transform:uppercase;margin-top:25px;font:900 21px/.9 Impact,Arial Black,sans-serif;display:block}.deck-sticker{z-index:4;color:#050505;text-align:center;background:#df0;border:3px solid #050505;border-radius:50%;place-items:center;width:112px;height:112px;font:900 16px/.85 Impact,Arial Black,sans-serif;display:grid;position:absolute;bottom:25px;right:22px;transform:rotate(8deg)}.deck-stage-mark{z-index:3;font:900 38px Impact,Arial Black,sans-serif;position:absolute;top:20px;right:18px}.deck-marquee{color:#fff;letter-spacing:1px;background:#050505;border-bottom:3px solid #050505;flex-wrap:wrap;justify-content:center;align-items:center;gap:18px;min-height:76px;padding:16px 22px;font:900 15px DM Mono,monospace;display:flex}.deck-marquee svg{color:#df0;flex:0 0 16px;width:16px;height:16px}.deck-problem{background:#f2e6d3;grid-template-columns:160px minmax(0,1fr) 220px;align-items:center;gap:40px;display:grid}.deck-problem-label{border-right:2px solid #050505;flex-direction:column;justify-content:space-between;align-self:stretch;padding-right:22px;display:flex}.deck-side-number{letter-spacing:-2px;font-size:34px}.deck-problem-copy h2,.deck-section-head h2,.deck-dont-title h2,.deck-tools-intro h2,.deck-proof-copy h2,.deck-contact h2{font-size:clamp(48px,6.5vw,92px)}.deck-quote{text-transform:uppercase;border-top:3px solid #050505;margin-top:42px;padding-top:18px;font:900 clamp(20px,2.2vw,31px)/1 Impact,Arial Black,sans-serif}.deck-problem-art{text-transform:uppercase;background:#ff7fa8;border:3px solid #050505;flex-direction:column;align-items:center;gap:9px;padding:20px 10px;font:700 9px DM Mono,monospace;display:flex;box-shadow:6px 6px #050505}.deck-problem-art i{font:900 74px Impact,Arial Black,sans-serif}.deck-problem-art strong{color:#f15e92;font-size:26px}.deck-problem-art b{color:#050505;font-size:29px}.deck-method,.deck-formats,.deck-tools,.deck-contact{border-top:3px solid #050505}.deck-method,.deck-tools{background:#ff7fa8 radial-gradient(#0000001a 1px,#0000 1px) 0 0/13px 13px}.deck-section-head{grid-template-columns:1fr .8fr;align-items:end;gap:60px;display:grid}.deck-section-head>p{margin:0 0 7px}.deck-card-grid,.deck-format-grid,.deck-tool-grid,.deck-proof-grid{gap:17px;margin-top:56px;display:grid}.deck-card-grid,.deck-format-grid{grid-template-columns:repeat(3,1fr)}.deck-card{background:#f2e6d3;border:3px solid #050505;min-height:310px;padding:24px;position:relative;box-shadow:6px 6px #050505}.deck-card:nth-child(2){transform:translateY(28px)}.deck-card-number{font:700 25px DM Mono,monospace}.deck-card-tag{float:right;color:#f15e92;font-size:8px}.deck-card h3,.deck-format h3,.deck-tool strong{text-transform:uppercase;font:900 31px/.9 Impact,Arial Black,sans-serif}.deck-card h3{margin:100px 0 12px}.deck-card p,.deck-format p,.deck-tool small{color:#514b47;font:500 13px/1.4 Space Grotesk,sans-serif}@media (width>=901px){.deck-method{box-sizing:border-box;flex-direction:column;justify-content:center;min-height:calc(100vh - 78px);padding-block:clamp(34px,5.2vh,60px);display:flex}.deck-method .deck-section-head{grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:clamp(30px,5vw,76px)}.deck-method .deck-section-head h2,.deck-formats .deck-section-head h2{max-width:100%;font-size:clamp(50px,5vw,82px);line-height:1.1}.deck-method .deck-card-grid{margin-top:clamp(26px,4vh,38px)}.deck-method .deck-card{box-sizing:border-box;min-height:230px;padding:22px}.deck-method .deck-card h3{margin:58px 0 10px;font-size:clamp(24px,2.2vw,31px);line-height:.98}}.deck-dont,.deck-proof{background:#f2e6d3;grid-template-columns:.8fr 1.2fr;gap:80px;display:grid}.deck-dont-title h2 mark,.deck-proof-copy h2 mark{background:#df0;box-shadow:7px 0 #df0,-7px 0 #df0}.deck-dont-list{padding-top:8px}.deck-dont-title h2{line-height:1.1}.deck-dont-list>div{text-transform:uppercase;border-top:3px solid #050505;grid-template-columns:44px minmax(0,1fr);align-items:start;gap:16px;padding:19px 0;font:900 clamp(20px,2vw,30px)/1.12 Impact,Arial Black,sans-serif;display:grid}.deck-dont-list>div span{padding-top:4px;font:700 10px DM Mono,monospace}.deck-dont-list s{-webkit-text-decoration-skip-ink:auto;text-decoration-skip-ink:auto;text-decoration-color:#f15e92;text-decoration-thickness:2px}.deck-dont-list p{color:#514b47;max-width:480px;margin:25px 0 0 50px;font:500 14px/1.45 Space Grotesk,sans-serif}@media (width>=901px){.deck-dont{box-sizing:border-box;align-items:center;min-height:calc(100vh - 78px);padding-block:clamp(42px,5vh,68px)}.deck-dont-list{padding-top:0}}.deck-formats{background:#91dfff radial-gradient(#0000001a 1px,#0000 1px) 0 0/13px 13px}.deck-format{cursor:pointer;background:#f2e6d3;border:3px solid #050505;flex-direction:column;min-height:300px;padding:23px;display:flex;box-shadow:6px 6px #050505}.deck-format:nth-child(2){background:#df0}.deck-format>span{color:#f15e92;font-size:9px}.deck-format h3{margin:auto 0 9px}.deck-format button{color:#050505;cursor:pointer;text-transform:uppercase;background:0 0;border:0;align-self:flex-start;margin-top:20px;padding:0;font:700 10px DM Mono,monospace}.deck-tools{grid-template-columns:.75fr 1.25fr;gap:70px;display:grid}.deck-tool-grid{grid-template-columns:repeat(2,1fr);margin-top:0}.deck-tool{color:#050505;cursor:pointer;text-align:left;border:3px solid #050505;flex-direction:column;align-items:flex-start;gap:8px;min-height:205px;padding:22px;display:flex;position:relative;box-shadow:6px 6px #050505}.deck-tool-lime{background:#df0}.deck-tool-pink{background:#ff7fa8}.deck-tool-cream{background:#f2e6d3}.deck-tool .tool-icon{color:#050505;margin-bottom:25px}.deck-tool>span{font-size:8px}.deck-tool small{color:#050505;font-size:11px}.deck-tool>b{font:24px DM Mono,monospace;position:absolute;bottom:15px;right:19px}.deck-proof{background:#df0 radial-gradient(#0000001f 1px,#0000 1px) 0 0/12px 12px}.deck-proof-copy>p{max-width:450px}.deck-proof-grid{grid-template-columns:repeat(2,1fr);align-self:center;margin-top:0}.deck-proof-grid>div{border-top:3px solid #050505;flex-direction:column;justify-content:space-between;min-height:150px;padding-top:13px;display:flex}.deck-proof-grid strong{font:900 clamp(38px,4.5vw,68px)/.9 Impact,Arial Black,sans-serif}.deck-proof-grid span{color:#514b47;font-size:9px}.deck-contact{background:#f15e92 radial-gradient(#0000001f 1px,#0000 1px) 0 0/13px 13px;justify-content:space-between;align-items:end;gap:45px;display:flex}.deck-contact h2{margin-bottom:0}.deck-contact h2 mark{background:#df0;box-shadow:7px 0 #df0,-7px 0 #df0}.deck-contact-actions{flex-direction:column;align-items:flex-start;margin:0}.deck-contact-link{border-bottom:2px solid #050505;padding-bottom:6px}.deck-footer{color:#aaa39b;letter-spacing:.7px;text-transform:uppercase;background:#050505;align-items:center;gap:25px;min-height:82px;padding:18px clamp(20px,8vw,130px);font:8px DM Mono,monospace;display:flex}.deck-footer .deck-brand{margin-right:auto}.deck-footer>div{gap:18px;display:flex}.deck-footer a{color:#fff;text-decoration:none}.deck-footer a:hover{color:#df0}@media (width<=900px){.deck-nav a{display:none}.deck-nav{margin-left:auto}.deck-hero,.deck-problem,.deck-section-head,.deck-dont,.deck-tools,.deck-proof,.deck-contact{grid-template-columns:1fr}.deck-stage{min-height:440px}.deck-problem-art{max-width:230px}.deck-card-grid,.deck-format-grid{grid-template-columns:1fr}.deck-card:nth-child(2){transform:none}.deck-proof-grid{margin-top:30px}.deck-contact-actions{align-items:flex-start}}@media (width<=560px){.deck-header{padding-inline:17px}.deck-hero,.deck-problem,.deck-method,.deck-dont,.deck-formats,.deck-tools,.deck-proof,.deck-contact{padding:64px 20px}.deck-hero-copy h1,.deck-section-head h2,.deck-problem-copy h2,.deck-dont-title h2,.deck-tools-intro h2,.deck-proof-copy h2,.deck-contact h2{font-size:54px}.deck-stage{min-height:390px}.deck-note-main{width:78%;left:7%}.deck-note-photo{width:82px;height:112px}.deck-note-main strong{font-size:25px}.deck-note-small{width:145px;padding:12px;right:4%}.deck-note-small strong{font-size:17px}.deck-sticker{width:87px;height:87px;font-size:12px}.deck-proof-line{flex-direction:column;align-items:flex-start;gap:7px;margin-top:40px}.deck-proof-line span{border-left:0;padding-left:0}.deck-marquee{justify-content:flex-start;gap:9px;font-size:10px}.deck-dont,.deck-contact{gap:35px}.deck-tool-grid,.deck-proof-grid{grid-template-columns:1fr}.deck-footer{flex-direction:column;align-items:flex-start}.deck-footer .deck-brand{margin-right:0}}@media (prefers-reduced-motion:reduce){.deck-card:nth-child(2){transform:none}}@media (width>=901px){.deck-page{scroll-snap-type:y mandatory}.deck-slide{box-sizing:border-box;scroll-snap-align:start;scroll-snap-stop:always;height:calc(100dvh - 78px);min-height:0}.deck-hero{grid-template-rows:minmax(0,1fr) auto;row-gap:clamp(12px,2vh,20px);min-height:0;padding-block:clamp(26px,4vh,46px) 0}.deck-hero-copy h1,.deck-section-head h2,.deck-problem-copy h2,.deck-dont-title h2,.deck-tools-intro h2,.deck-proof-copy h2,.deck-contact h2{margin-block:14px 18px;font-size:clamp(42px,4.5vw,68px);line-height:.88}.deck-section-head{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,4vw,50px)}.deck-section-head>p,.deck-hero-copy>p,.deck-problem-copy>p,.deck-tools-intro>p,.deck-proof-copy>p,.deck-contact>div>p{font-size:15px}.deck-stage{height:100%;min-height:0}.deck-marquee{grid-column:1/-1;min-height:0;padding-block:10px}.deck-hero,.deck-problem,.deck-method,.deck-dont,.deck-formats,.deck-tools,.deck-proof,.deck-contact{padding-block:clamp(24px,4vh,44px)}.deck-hero{padding-bottom:0}.deck-format{min-height:0}.deck-format-grid,.deck-card-grid{margin-top:clamp(22px,3vh,32px)}.deck-dont-list>div{padding-block:13px}.deck-tool{min-height:0}.deck-tool .tool-icon{margin-bottom:clamp(8px,2vh,20px)}}@media (width<=900px){.deck-page{scroll-snap-type:y proximity}.deck-slide{height:auto;min-height:calc(100dvh - 78px)}}.deck-tool,.deck-button,.deck-format a,.deck-portal-link{text-decoration:none}.deck-format a{color:inherit;align-items:center;font:700 11px monospace;display:inline-flex}.countdown-page{color:#151515;background:#f1f2ef;min-height:100vh}.countdown-header{background:#f7f7f4;border-bottom:2px solid #171717;justify-content:space-between;align-items:center;height:72px;padding:0 clamp(20px,6vw,90px);display:flex}.countdown-back{color:#111;cursor:pointer;text-transform:uppercase;background:0 0;border:0;padding:8px 0;font:700 10px DM Mono}.countdown-back:hover{color:#e52d27}.countdown-brand{letter-spacing:-.6px;text-transform:uppercase;font:700 21px Arial Narrow,Arial,sans-serif}.countdown-brand>span:first-child{color:#fff;text-transform:none;background:#e52d27;place-items:center;width:25px;height:25px;margin-right:5px;font:18px Georgia;display:inline-grid}.countdown-brand>span:last-child{color:#e52d27}.countdown-location{letter-spacing:1px;color:#777;font:700 9px DM Mono}.countdown-hero{background:#f1f2ef;border-bottom:2px solid #111;grid-template-columns:1fr 270px;gap:70px;padding:90px clamp(25px,9vw,140px) 86px;display:grid}.countdown-hero h1,.countdown-section-heading h2,.countdown-guide h2{letter-spacing:-2px;text-transform:uppercase;margin:20px 0;font:700 clamp(48px,6vw,80px)/.88 Arial Narrow,Impact,sans-serif}.countdown-hero h1 em,.countdown-section-heading h2 em,.countdown-guide h2 em{color:#e52d27;font-style:normal}.countdown-hero p{color:#5f6060;max-width:560px;margin:0;font:500 17px/1.5 Arial Narrow,Arial,sans-serif}.countdown-hero-note{color:#fff;background:#e52d27;border:2px solid #111;align-self:end;min-height:168px;padding:22px;position:relative;box-shadow:6px 6px #111}.countdown-hero-note span{letter-spacing:1px;font:700 9px DM Mono}.countdown-hero-note strong{text-transform:uppercase;margin-top:24px;font:700 30px/.95 Arial Narrow;display:block}.countdown-hero-note i{font:34px Arial;position:absolute;bottom:18px;right:21px}.series-section{padding:100px clamp(25px,9vw,140px)}.countdown-section-heading{grid-template-columns:1fr 1fr;align-items:end;gap:70px;display:grid}.countdown-section-heading h2{margin-bottom:0;font-size:clamp(43px,5vw,66px)}.countdown-section-heading>p{color:#606161;max-width:425px;margin:0 0 5px;font:500 16px/1.5 Arial Narrow,Arial,sans-serif}.countdown-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:50px;display:grid}.countdown-card{background:#f8f8f4;border:2px solid #111;flex-direction:column;min-height:420px;padding:24px;display:flex}.countdown-card.dark{color:#fff;background:#111}.countdown-card-top{justify-content:space-between;align-items:center;display:flex}.series-index{color:#999;font:700 10px DM Mono}.series-window{letter-spacing:1px;text-transform:uppercase;font:700 9px DM Mono}.countdown-card.dark .series-window{color:#aaa}.series-kicker{letter-spacing:1px;color:#e52d27;margin-top:44px;font:700 9px DM Mono}.countdown-card.dark .series-kicker{color:#ff706a}.countdown-card h2{letter-spacing:-.5px;text-transform:uppercase;margin:10px 0 8px;font:700 clamp(29px,3vw,43px)/.95 Arial Narrow}.countdown-card>p{color:#666;max-width:385px;margin:0;font:500 14px/1.35 Arial Narrow,Arial,sans-serif}.countdown-card.dark>p{color:#b7b7b2}.countdown-date{border-top:1px solid #c7c7c2;margin-top:29px;padding-top:14px}.countdown-date span,.countdown-date small{letter-spacing:1px;color:#777;text-transform:uppercase;font:700 9px DM Mono;display:block}.countdown-card.dark .countdown-date span,.countdown-card.dark .countdown-date small{color:#aaa}.countdown-date strong{text-transform:uppercase;margin:5px 0;font:700 17px Arial Narrow;display:block}.countdown-date small{letter-spacing:0;text-transform:none;font-weight:400}.countdown-values{align-items:flex-end;gap:9px;margin-top:22px;display:flex}.countdown-values>div{flex-direction:column;min-width:48px;display:flex}.countdown-values strong{color:#111;font:700 clamp(25px,3vw,39px)/1 DM Mono}.countdown-values span{color:#777;margin-top:7px;font:700 8px DM Mono}.countdown-card.dark .countdown-values span{color:#999}.countdown-values>b{color:#e52d27;margin-bottom:17px;font:700 20px DM Mono}.series-tags{flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:24px;display:flex}.series-tags span{letter-spacing:.5px;border:1px solid #aaa;padding:6px 8px;font:700 8px DM Mono}.countdown-guide{background:#e52d27;border-top:2px solid #111;grid-template-columns:1fr 1.1fr;gap:100px;padding:100px clamp(25px,9vw,140px);display:grid}.countdown-guide h2{margin-bottom:0;font-size:clamp(42px,5vw,65px)}.guide-steps{flex-direction:column;gap:24px;padding-top:8px;display:flex}.guide-steps>div{border-top:1px solid #111;grid-template-columns:35px 1fr;column-gap:14px;padding-top:13px;display:grid}.guide-steps b{grid-row:span 2;font:700 10px DM Mono}.guide-steps strong{text-transform:uppercase;font:700 17px Arial Narrow}.guide-steps span{color:#4e1817;margin-top:4px;font:500 13px/1.3 Arial Narrow}.tool-card{text-align:left;cursor:pointer;font-family:inherit}.tool-card:focus-visible,.countdown-back:focus-visible{outline-offset:3px;outline:2px solid #e52d27}@media (width<=800px){.countdown-location{display:none}.countdown-hero,.countdown-section-heading,.countdown-guide{grid-template-columns:1fr;gap:30px}.countdown-hero{padding-top:65px}.countdown-hero-note{max-width:270px}.countdown-grid{grid-template-columns:1fr}.series-section,.countdown-guide{padding-top:70px;padding-bottom:70px}}@media (width<=520px){.countdown-header{padding:0 17px}.countdown-brand{font-size:18px}.countdown-hero,.series-section,.countdown-guide{padding-left:20px;padding-right:20px}.countdown-hero h1{font-size:51px}.countdown-values{gap:5px}.countdown-values>div{min-width:39px}.countdown-values strong{font-size:24px}.countdown-values span{font-size:7px}.countdown-values>b{margin-bottom:12px;font-size:14px}}.countdown-hero-note i{place-items:center;display:grid}.countdown-hero-note i svg{width:34px;height:34px}.feedback-math{white-space:pre-wrap;overflow-wrap:anywhere}.feedback-formula{vertical-align:middle;max-width:100%;padding:2px 1px;display:inline-block;overflow:auto hidden}.feedback-formula svg{max-width:none}.feedback-formula-display{padding:10px 0;display:block}.feedback-formula-pending,.feedback-formula-invalid{font-family:Georgia,serif}.paper-result-actions .paper-result-download{box-sizing:border-box;background:var(--nd-paper,#f7f1e1);color:#111;letter-spacing:.35px;text-align:center;text-transform:uppercase;cursor:pointer;border:3px solid #111;border-radius:12px;justify-content:center;align-items:center;gap:9px;width:100%;min-height:50px;margin:0;padding:13px 15px;font:700 11px/1.45 DM Mono,monospace;text-decoration:none;display:flex;box-shadow:4px 4px #111}.paper-result-actions .paper-result-download-primary{background:var(--nd-lime,#d5ff00)}.paper-result-actions .paper-result-download:hover{background:var(--nd-pink,#ffb8c9);color:#111;text-decoration:none}.paper-result-actions .paper-result-download:focus-visible{outline-offset:6px;outline:3px solid #111}.paper-result-actions .paper-result-download:active{transform:translate(3px,3px);box-shadow:1px 1px #111}.paper-result-actions .paper-result-download:disabled{opacity:.6;cursor:wait}.pastpapers-page{color:#151515;background:#f1f2ef;min-height:100vh}.pastpapers-header{background:#f7f7f4;border-bottom:2px solid #171717;justify-content:space-between;align-items:center;height:72px;padding:0 clamp(20px,6vw,90px);display:flex}.pastpapers-back{color:#111;cursor:pointer;text-transform:uppercase;background:0 0;border:0;padding:8px 0;font:700 10px DM Mono}.pastpapers-back:hover{color:#e52d27}.pastpapers-location{letter-spacing:1px;color:#777;font:700 9px DM Mono}.pastpapers-hero{border-bottom:2px solid #111;grid-template-columns:1fr 270px;gap:70px;padding:90px clamp(25px,9vw,140px) 86px;display:grid}.pastpapers-hero h1,.pastpapers-section-heading h2{letter-spacing:-2px;text-transform:uppercase;margin:20px 0;font:700 clamp(48px,6vw,80px)/.88 Arial Narrow,Impact,sans-serif}.pastpapers-hero h1 em,.pastpapers-section-heading h2 em{color:#e52d27;font-style:normal}.pastpapers-hero p{color:#5f6060;max-width:560px;margin:0;font:500 17px/1.5 Arial Narrow,Arial,sans-serif}.pastpapers-hero-note{color:#fff;background:#111;border:2px solid #111;align-self:end;min-height:168px;padding:22px;box-shadow:6px 6px #e52d27}.pastpapers-hero-note span,.pastpapers-hero-note i{letter-spacing:1px;color:#ff706a;font:700 9px DM Mono;display:block}.pastpapers-hero-note strong{margin:22px 0 11px;font:700 57px/.95 DM Mono;display:block}.pastpapers-hero-note strong small{color:#aaa;font-size:12px}.pastpapers-library{padding:100px clamp(25px,9vw,140px)}.pastpapers-section-heading{border-bottom:2px solid #111;grid-template-columns:1fr 1fr;align-items:end;gap:70px;padding-bottom:24px;display:grid}.pastpapers-section-heading h2{margin-bottom:0;font-size:clamp(43px,5vw,66px)}.pastpapers-tools{justify-self:end;width:min(100%,330px)}.pastpapers-tools label{letter-spacing:1px;color:#e52d27;margin-bottom:9px;font:700 9px DM Mono;display:block}.pastpapers-tools input{box-sizing:border-box;color:#111;background:#f8f8f4;border:2px solid #111;outline:none;width:100%;padding:13px 14px;font:600 13px Arial Narrow,Arial,sans-serif}.pastpapers-tools input:focus{box-shadow:4px 4px #e52d27}.paper-folder{background:#f8f8f4;border:2px solid #111;margin-bottom:12px}.paper-folder.depth-1{background:#f3f4f0;border-width:1px;margin:10px 0 0}.paper-folder.depth-2,.paper-folder.depth-3{background:#f8f8f4;border-width:1px;margin:9px 0 0}.paper-folder-heading{text-align:left;color:#111;cursor:pointer;background:0 0;border:0;align-items:center;gap:12px;width:100%;padding:17px 19px;display:flex}.paper-folder-chevron{color:#e52d27;width:12px;font:700 20px/1 Arial}.paper-folder-mark{color:#e52d27;font-size:20px}.paper-folder-name{text-transform:uppercase;letter-spacing:.2px;font:700 18px Arial Narrow,Arial,sans-serif}.paper-folder-count{letter-spacing:.5px;text-transform:uppercase;color:#777;margin-left:auto;font:700 9px DM Mono}.paper-folder.depth-0>.paper-folder-content{padding:0 20px 20px}.paper-file{border-top:1px solid #d2d3cf;align-items:center;gap:13px;padding:14px 8px;display:flex}.paper-file-icon{color:#fff;background:#e52d27;flex-shrink:0;place-items:center;width:39px;height:39px;font:700 9px DM Mono;display:grid}.paper-file-copy{flex-direction:column;gap:5px;min-width:0;display:flex}.paper-file-copy strong{text-transform:uppercase;overflow-wrap:anywhere;font:700 14px Arial Narrow,Arial,sans-serif}.paper-file-copy span{color:#777;text-transform:uppercase;font:700 9px DM Mono}.paper-file-actions{flex-shrink:0;gap:8px;margin-left:auto;display:flex}.paper-file-actions a{text-transform:uppercase;border:1px solid #111;padding:9px 11px;font:700 9px DM Mono;text-decoration:none}.paper-view{color:#fff;background:#111}.paper-view:hover{background:#e52d27;border-color:#e52d27}.paper-download{color:#111;background:0 0}.paper-download:hover{color:#fff;background:#e52d27;border-color:#e52d27}.pastpapers-state{text-transform:uppercase;text-align:center;background:#f8f8f4;border:2px solid #111;flex-direction:column;justify-content:center;align-items:center;gap:10px;min-height:240px;margin-top:25px;padding:25px;font:700 11px DM Mono;display:flex}.pastpapers-state strong{text-transform:uppercase;font:700 25px Arial Narrow}.pastpapers-state span{color:#777}.pastpapers-error strong{color:#e52d27}.pastpapers-loader{border:2px solid #ccc;border-top-color:#e52d27;border-radius:50%;width:15px;height:15px;animation:.8s linear infinite pastpapers-spin}@keyframes pastpapers-spin{to{transform:rotate(360deg)}}.paper-search-results{margin-top:25px}.paper-search-count,.paper-result-path{letter-spacing:1px;text-transform:uppercase;color:#777;font:700 9px DM Mono}.paper-search-count{color:#e52d27;margin-bottom:12px}.paper-result-path{margin-top:17px;margin-bottom:5px}.paper-search-results .paper-file{background:#f8f8f4;border:1px solid #bbb;padding:13px 12px}@media (width<=800px){.pastpapers-location{display:none}.pastpapers-hero,.pastpapers-section-heading{grid-template-columns:1fr;gap:30px}.pastpapers-hero{padding-top:65px}.pastpapers-hero-note{max-width:270px}.pastpapers-tools{justify-self:stretch;width:auto}.paper-file{flex-wrap:wrap;align-items:flex-start}.paper-file-actions{width:100%;margin-left:52px}.paper-file-actions a{text-align:center;flex:1}}@media (width<=520px){.pastpapers-header{padding:0 17px}.pastpapers-hero,.pastpapers-library{padding-left:20px;padding-right:20px}.pastpapers-hero h1{font-size:51px}.pastpapers-section-heading h2{font-size:45px}.paper-folder-heading{gap:8px;padding:15px 12px}.paper-folder-name{font-size:16px}.paper-folder-count{font-size:8px}.paper-folder-content,.paper-folder.depth-0>.paper-folder-content{padding-left:10px;padding-right:10px}.paper-file-actions{margin-left:0}.paper-file-actions a{padding:8px 7px;font-size:8px}}.paper-viewer-page{color:#151515;background:#f1f2ef;min-height:100vh}.paper-viewer-header{background:#f7f7f4;border-bottom:2px solid #171717;justify-content:space-between;align-items:center;height:72px;padding:0 clamp(20px,6vw,90px);display:flex}.paper-exit{color:#111;cursor:pointer;text-transform:uppercase;background:0 0;border:0;padding:8px 0;font:700 10px DM Mono}.paper-exit:hover{color:#e52d27}.paper-viewer-main{padding:58px clamp(20px,6vw,90px) 70px}.paper-viewer-heading{border-bottom:2px solid #111;justify-content:space-between;align-items:end;gap:30px;padding-bottom:25px;display:flex}.paper-viewer-heading h1{letter-spacing:-1px;text-transform:uppercase;overflow-wrap:anywhere;max-width:800px;margin:16px 0 10px;font:700 clamp(32px,5vw,64px)/.9 Arial Narrow,Impact,sans-serif}.paper-viewer-heading p{color:#606161;max-width:650px;margin:0;font:500 16px/1.4 Arial Narrow,Arial,sans-serif}.viewer-download{flex-shrink:0}.paper-viewer-layout{grid-template-columns:275px minmax(0,1fr);align-items:start;gap:18px;margin-top:25px;display:grid}.paper-timer-panel{color:#fff;background:#111;border:2px solid #111;padding:22px;position:sticky;top:20px;box-shadow:6px 6px #e52d27}.paper-timer-panel.finished .section-kicker{color:#111}.paper-timer-display{letter-spacing:-2px;margin:26px 0 8px;font:700 clamp(32px,4vw,48px)/1 DM Mono}.paper-timer-status{text-transform:uppercase;color:#aaa;min-height:15px;font:700 10px DM Mono}.paper-timer-panel.finished .paper-timer-status{color:#4e1817}.paper-duration{border-top:1px solid #555;margin-top:25px;padding-top:17px}.paper-duration label{letter-spacing:.7px;color:#aaa;margin-bottom:8px;font:700 8px DM Mono;display:block}.paper-duration input{box-sizing:border-box;color:#fff;background:#222;border:1px solid #777;outline:none;width:100%;padding:10px;font:700 14px DM Mono}.paper-duration input:focus{border-color:#ff706a}.paper-presets{grid-template-columns:repeat(4,1fr);gap:5px;margin-top:8px;display:grid}.paper-presets button{color:#bbb;cursor:pointer;background:0 0;border:1px solid #666;padding:7px 3px;font:700 8px DM Mono}.paper-presets button:hover,.paper-presets button.selected{color:#fff;background:#e52d27;border-color:#ff706a}.paper-presets button:disabled{opacity:.45;cursor:not-allowed}.paper-timer-actions{gap:8px;margin-top:20px;display:flex}.paper-timer-button,.paper-reset-button{cursor:pointer;text-transform:uppercase;padding:11px 10px;font:700 9px DM Mono}.paper-timer-button{color:#fff;background:#e52d27;border:1px solid #e52d27;flex:1}.paper-reset-button{color:#bbb;background:0 0;border:1px solid #666}.paper-reset-button:hover{color:#fff;border-color:#fff}.paper-timer-note{color:#999;border-top:1px solid #555;margin-top:22px;padding-top:15px;font:500 12px/1.4 Arial Narrow,Arial,sans-serif}.paper-timer-panel.finished .paper-timer-note{color:#4e1817;border-color:#a52a26}.paper-document{background:#fff;border:2px solid #111;height:calc(100vh - 195px);min-height:620px;box-shadow:6px 6px #111}.paper-document iframe{border:0;width:100%;height:100%;display:block}.paper-file-actions button{cursor:pointer}.paper-file-actions button,.paper-file-actions a{text-transform:uppercase;font-family:DM Mono;font-size:9px;font-weight:700}.paper-file-actions button{padding:9px 11px}.paper-file-actions button:hover{color:#fff;background:#e52d27;border-color:#e52d27}.paper-file-actions .paper-view{color:#fff;background:#111}.paper-file-actions .paper-view:hover{background:#e52d27}.paper-file-actions .paper-download{display:block}@media (width<=900px){.paper-viewer-heading{flex-direction:column;align-items:flex-start}.paper-viewer-layout{grid-template-columns:1fr}.paper-timer-panel{position:static}.paper-document{height:75vh;min-height:520px}}@media (width<=520px){.paper-viewer-header{padding:0 17px}.paper-exit{font-size:8px}.paper-viewer-main{padding:35px 15px 50px}.paper-viewer-heading h1{font-size:35px}.paper-viewer-heading p{font-size:14px}.paper-document{height:70vh;min-height:450px;box-shadow:4px 4px #111}.paper-timer-panel{padding:18px}.paper-timer-display{font-size:34px}.paper-presets button{font-size:7px}}.paper-score-saved span{align-items:center;gap:7px;display:inline-flex}.paper-folder-chevron svg{width:16px;height:16px}.paper-folder-heading{list-style:none}.paper-folder-heading::-webkit-details-marker{display:none}.auth-page{color:#151515;background:#f1f2ef;min-height:100vh}.auth-header{background:#f7f7f4;border-bottom:2px solid #171717;justify-content:space-between;align-items:center;height:72px;padding:0 clamp(20px,6vw,90px);display:flex}.auth-back{color:#111;cursor:pointer;text-transform:uppercase;background:0 0;border:0;padding:8px 0;font:700 10px DM Mono}.auth-back:hover{color:#e52d27}.auth-main{grid-template-columns:minmax(0,1fr) minmax(380px,520px);align-items:center;gap:90px;max-width:1250px;margin:0 auto;padding:90px 35px;display:grid}.auth-copy h1,.auth-state h1{letter-spacing:-2px;text-transform:uppercase;margin:20px 0;font:700 clamp(46px,6vw,78px)/.88 Arial Narrow,Impact,sans-serif}.auth-copy h1 em,.auth-state h1 em{color:#e52d27;font-style:normal}.auth-copy p,.auth-state p{color:#5f6060;max-width:470px;font:500 17px/1.5 Arial Narrow,Arial,sans-serif}.auth-card{background:#f8f8f4;border:2px solid #111;padding:26px;box-shadow:7px 7px #e52d27}.auth-tabs{border-bottom:2px solid #111;grid-template-columns:1fr 1fr;margin-bottom:20px;display:grid}.auth-tabs button{color:#888;cursor:pointer;text-transform:uppercase;background:0 0;border:0;padding:10px 5px;font:700 10px DM Mono}.auth-tabs button.active{color:#111;border-bottom:3px solid #e52d27;margin-bottom:-2px}.google-button{color:#111;cursor:pointer;text-transform:uppercase;background:#fff;border:2px solid #111;justify-content:center;align-items:center;gap:10px;width:100%;padding:12px;font:700 10px DM Mono;display:flex}.google-button:hover{background:#eee}.google-mark{color:#4285f4;border:1px solid #111;border-radius:50%;place-items:center;width:20px;height:20px;font:700 12px Arial;display:grid}.auth-divider{color:#888;text-transform:uppercase;align-items:center;gap:10px;margin:19px 0;font:9px DM Mono;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:#c8c8c3;flex:1;height:1px}.auth-fields{flex-direction:column;gap:13px;display:flex}.auth-fields.two-column{grid-template-columns:1fr 1fr;margin-bottom:13px;display:grid}.auth-fields label,.avatar-field{color:#555;letter-spacing:.4px;text-transform:uppercase;flex-direction:column;gap:6px;font:700 9px DM Mono;display:flex}.auth-fields input,.auth-fields select,.avatar-field input{color:#111;text-transform:none;background:#fff;border:2px solid #aaa;border-radius:0;outline:none;padding:12px 11px;font:12px Arial Narrow,Arial,sans-serif}.auth-submit{width:100%;margin-top:18px}.auth-footnote{color:#888;text-transform:uppercase;margin-top:14px;font:9px/1.4 DM Mono;display:block}.auth-message{color:#85231f;text-transform:uppercase;background:#f9e8e4;border-left:3px solid #e52d27;margin-top:14px;padding:10px;font:10px/1.4 DM Mono}.auth-state{max-width:650px}.profile-card{box-shadow:7px 7px #111}.profile-avatar-preview{color:#fff;background:#e52d27;border:2px solid #111;place-items:center;width:64px;height:64px;margin-bottom:20px;display:grid;overflow:hidden}.profile-avatar-preview span{font:700 24px Arial Narrow}.profile-avatar-preview img{object-fit:cover;width:100%;height:100%}.avatar-field{margin-top:13px}.avatar-field span{color:#999;text-transform:none;font-weight:400}.red-button:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}@media (width<=850px){.auth-main{grid-template-columns:1fr;gap:40px;padding-top:60px}.auth-copy p,.auth-card{max-width:600px}}@media (width<=520px){.auth-header{padding:0 17px}.auth-header .quiz-location{display:none}.auth-main{padding:50px 20px}.auth-copy h1,.auth-state h1{font-size:51px}.auth-card{padding:19px}.auth-fields.two-column{grid-template-columns:1fr}}.auth-card{min-width:0}.auth-title{letter-spacing:-.5px;margin:0 0 20px;font:700 26px/1.15 Arial Narrow,Arial,sans-serif}.auth-title:focus{outline:none}.auth-fieldset{border:0;min-width:0;margin:0;padding:0}.auth-fields>*{min-width:0}.auth-fields input,.auth-fields select{box-sizing:border-box;width:100%;min-width:0;font-size:16px}.auth-password-field{flex-direction:column;gap:6px;display:flex}.auth-password-field>label{letter-spacing:.4px;text-transform:uppercase;color:#555;font:700 9px DM Mono,monospace}.auth-password-input{align-items:center;display:flex;position:relative}.auth-password-input input{width:100%;padding-right:50px}.auth-eye{color:#555;cursor:pointer;background:#fff;border:0;place-items:center;width:44px;display:grid;position:absolute;top:2px;bottom:2px;right:2px}.auth-eye:hover{color:#c92a24}.auth-password-help{color:#656565;margin:-4px 0 0;font:12px/1.5 Arial,sans-serif}.auth-text-button{color:#a9221c;text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:10px 0;font:600 13px/1.5 Arial,sans-serif;text-decoration:underline}.auth-forgot{margin-left:auto;display:block}.auth-return{margin-top:12px;display:block}.auth-secondary{color:#111;cursor:pointer;background:0 0;border:2px solid #111;width:100%;margin-top:14px;padding:12px 14px;font:700 13px/1.4 Arial,sans-serif;display:block}.auth-secondary:hover{background:#f2e6d3}.auth-card button:focus-visible,.auth-back:focus-visible{outline-offset:3px;outline:3px solid #135ea8}.auth-card button:disabled{cursor:not-allowed;opacity:.55}.auth-description{color:#555;overflow-wrap:anywhere;margin:0 0 18px;font:15px/1.6 Arial,sans-serif}.auth-description strong{color:#111}.auth-message{text-transform:none;overflow-wrap:anywhere;font:13px/1.55 Arial,sans-serif}.auth-message-success{color:#215c36;background:#edf5ec;border-color:#277444}.auth-result-icon{color:#c92a24;background:#f2e6d3;border:2px solid #111;place-items:center;width:58px;height:58px;margin-bottom:20px;display:grid}.auth-result-icon svg{width:28px;height:28px}.auth-fields input[aria-invalid=true]{border-color:#b42318}.auth-fieldset:disabled .auth-eye{background:#f5f5f5}@media (width<=520px){.auth-main{gap:26px;padding:36px 20px 50px}.auth-copy h1{font-size:42px}.auth-title{font-size:24px}.auth-card{box-sizing:border-box;width:100%}}.paper-finish-button{color:#fff;text-transform:uppercase;cursor:pointer;background:#e52d27;border:2px solid #e52d27;padding:11px 12px;font:700 9px DM Mono}.paper-finish-button:hover{background:#111;border-color:#111}.paper-score-saved{color:#2b7d54;text-transform:uppercase;border:1px solid #2b7d54;justify-content:space-between;align-items:center;gap:10px;margin-top:12px;padding:9px;font:700 9px DM Mono;display:flex}.paper-score-saved button{color:#fff;cursor:pointer;text-transform:uppercase;background:#2b7d54;border:1px solid #2b7d54;padding:7px 8px;font:700 8px DM Mono}.paper-score-saved button:hover{background:#111;border-color:#111}.paper-score-saved button span{font-size:13px}.paper-score-overlay{z-index:20;background:#111111b8;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.paper-score-modal{background:#f8f8f4;border:2px solid #111;width:min(100%,510px);padding:32px;box-shadow:8px 8px #e52d27}.paper-score-modal h2{text-transform:uppercase;margin:18px 0;font:700 48px/.9 Arial Narrow}.paper-score-modal h2 em{color:#e52d27;font-style:normal}.paper-score-modal p{color:#666;margin-bottom:24px;font:500 15px/1.45 Arial Narrow}.paper-score-modal label{text-transform:uppercase;margin-top:14px;font:700 10px DM Mono;display:block}.paper-score-modal label span{color:#888;font-weight:400}.paper-score-modal input{box-sizing:border-box;background:#fff;border:2px solid #111;width:100%;margin-top:7px;padding:13px;font:13px DM Mono;display:block}.paper-score-message{color:#c12621;text-transform:uppercase;border-left:3px solid #e52d27;margin-top:15px;padding:10px 12px;font:700 10px DM Mono}.paper-score-actions{justify-content:flex-end;gap:10px;margin-top:24px;display:flex}.paper-score-actions .paper-reset-button{cursor:pointer;padding:11px 12px}.paper-score-actions .paper-timer-button{padding:11px 12px}@media (width<=520px){.paper-score-modal{padding:24px}.paper-score-modal h2{font-size:42px}.paper-score-actions{flex-direction:column-reverse}.paper-score-actions button{width:100%}}.paper-score-side-panel{color:#111;background:#f8f8f4;border:2px solid #111;margin-top:20px;padding:16px;box-shadow:4px 4px #111}.paper-score-side-panel .section-kicker{color:#e52d27}.paper-score-side-panel h2{text-transform:uppercase;margin:12px 0 8px;font:700 25px/.95 Arial Narrow,Impact,sans-serif}.paper-score-side-panel p{color:#606161;margin:0 0 16px;font:500 13px/1.35 Arial Narrow,Arial,sans-serif}.paper-score-time{border-top:1px solid #c8c8c3;border-bottom:1px solid #c8c8c3;justify-content:space-between;align-items:baseline;gap:10px;margin:14px 0;padding:10px 0;display:flex}.paper-score-time span{color:#e52d27;text-transform:uppercase;font:700 9px DM Mono}.paper-score-time strong{color:#111;font:700 18px DM Mono}.paper-score-side-panel label{text-transform:uppercase;margin-top:13px;font:700 9px DM Mono;display:block}.paper-score-side-panel label span{color:#888;font-weight:400}.paper-score-side-panel input{box-sizing:border-box;color:#111;background:#fff;border:2px solid #111;outline:none;width:100%;margin-top:7px;padding:10px;font:12px DM Mono;display:block}.paper-score-side-panel input:focus{border-color:#e52d27}.paper-score-side-panel .paper-score-actions{margin-top:17px;display:block}.paper-score-side-panel .paper-timer-button{width:100%}.paper-score-side-panel .paper-score-message{margin-top:13px}.paper-signin-link{color:#e52d27;cursor:pointer;text-align:left;text-transform:uppercase;background:0 0;border:0;margin:-5px 0 14px;padding:0;font:700 10px DM Mono}.paper-signin-link:hover{color:#111}.paper-upload-actions{grid-template-columns:1fr 1fr;gap:8px;margin:12px 0;display:grid}.paper-upload-button,.paper-camera-button{color:#111;cursor:pointer;text-transform:uppercase;background:#fff;border:1px solid #111;padding:10px 8px;font:700 9px DM Mono}.paper-camera-button{color:#fff;background:#111}.paper-upload-button:hover{color:#e52d27;border-color:#e52d27}.paper-camera-button:hover{background:#e52d27;border-color:#e52d27}.paper-hidden-input{display:none!important}.paper-file-list{gap:5px;margin:12px 0;display:grid}.paper-file-list>div{color:#333;overflow-wrap:anywhere;background:#fff;border-left:3px solid #e52d27;justify-content:space-between;align-items:center;gap:8px;padding:7px 8px;font:11px/1.2 DM Mono;display:flex}.paper-file-list button{color:#e52d27;cursor:pointer;background:0 0;border:0;font:700 18px/1 Arial,sans-serif}.paper-grading-result{border-top:2px solid #111;margin-top:16px;padding-top:14px}.paper-grading-score{justify-content:space-between;align-items:end;gap:12px;display:flex}.paper-grading-score strong{color:#111;margin-top:8px;font:700 42px/.9 DM Mono;display:block}.paper-grading-score strong small{color:#777;font-size:17px}.paper-grading-score>b{color:#e52d27;font:700 18px DM Mono}.paper-grading-summary{margin:14px 0!important}.paper-grading-section{border-top:1px solid #c8c8c3;margin-top:13px;padding-top:11px}.paper-grading-section h3{text-transform:uppercase;margin:0 0 8px;font:700 11px DM Mono}.paper-grading-section ul{color:#4c4c4c;margin:0;padding-left:18px;font:12px/1.4 Arial Narrow,Arial,sans-serif}.paper-grading-section li+li{margin-top:5px}.paper-mistakes,.paper-correct-answers{gap:9px;display:grid}.paper-mistake{color:#555;background:#fff;border-left:3px solid #e52d27;padding:10px;font:12px/1.35 Arial Narrow,Arial,sans-serif}.paper-correct-answer{color:#555;background:#f1fbf5;border-left:3px solid #2b7d54;padding:10px;font:12px/1.35 Arial Narrow,Arial,sans-serif}.paper-mistake p,.paper-correct-answer p{margin:6px 0}.paper-mistake-heading{color:#111;justify-content:space-between;gap:8px;font:700 11px DM Mono;display:flex}.paper-mistake-heading span{white-space:nowrap;color:#e52d27}.paper-correct-answer .paper-mistake-heading span{color:#2b7d54}.paper-correct-solution{color:#111}.paper-empty-feedback{margin:0!important}.paper-review-warning{color:#795300;background:#fff8e7;border:1px solid #c88600;margin-top:13px;padding:9px;font:11px/1.35 Arial Narrow,Arial,sans-serif}.paper-open-result-button{color:#fff;cursor:pointer;text-transform:uppercase;background:#2b7d54;border:2px solid #111;width:100%;padding:12px 9px;font:700 10px DM Mono}.paper-open-result-button:hover{background:#111}.paper-result-page{color:#151515;background:#f1f2ef;min-height:100vh}.paper-result-main{max-width:1040px;margin:0 auto;padding:62px 28px 80px}.paper-result-heading{border-bottom:2px solid #111;justify-content:space-between;align-items:end;gap:45px;padding-bottom:28px;display:flex}.paper-result-heading h1{letter-spacing:-2px;text-transform:uppercase;margin:18px 0 13px;font:700 clamp(46px,6vw,76px)/.88 Arial Narrow,Impact,sans-serif}.paper-result-heading h1 em{color:#e52d27;font-style:normal}.paper-result-heading p{color:#606161;max-width:570px;margin:0;font:500 16px/1.45 Arial Narrow,Arial,sans-serif}.paper-result-actions{flex-shrink:0;gap:9px;width:220px;display:grid}.paper-download-report{color:#fff;cursor:pointer;text-transform:uppercase;background:#e52d27;border:2px solid #111;padding:13px 12px;font:700 10px DM Mono}.paper-download-report:hover{background:#111}.paper-download-report:disabled{opacity:.55;cursor:wait}.paper-result-meta{color:#e52d27;letter-spacing:.6px;text-transform:uppercase;border-bottom:1px solid #c8c8c3;gap:28px;padding:15px 0;font:700 9px DM Mono;display:flex}.paper-result-meta strong{color:#111;margin-left:5px}.paper-result-report{background:#f8f8f4;border:2px solid #111;max-width:840px;margin:34px auto 0;padding:25px 30px;box-shadow:7px 7px #111}.paper-result-report .paper-grading-result{border-top:0;margin-top:0;padding-top:0}.paper-result-report .paper-grading-score strong{font-size:58px}.paper-result-footer-actions{align-items:center;gap:14px;max-width:840px;margin:30px auto 0;display:flex}.paper-result-footer-actions .paper-timer-button{color:#fff;cursor:pointer;text-transform:uppercase;background:#111;border:2px solid #111;padding:12px 14px;font:700 10px DM Mono}.paper-result-footer-actions .paper-timer-button:hover{background:#e52d27;border-color:#e52d27}.paper-result-footer-actions .paper-timer-button:disabled{opacity:.55;cursor:wait}.paper-result-save-message{color:#2b7d54;font:700 10px DM Mono}.paper-direct-grade-button,.paper-upload-grade-button{color:#fff;cursor:pointer;text-transform:uppercase;background:#e52d27;border:2px solid #111;width:100%;padding:12px 9px;font:700 10px DM Mono}.paper-direct-grade-button:hover,.paper-upload-grade-button:hover{background:#111}.paper-direct-grade-button:disabled,.paper-upload-grade-button:disabled{opacity:.5;cursor:not-allowed}.paper-upload-grade-button{background:#111;margin-top:8px}.paper-upload-divider{color:#888;align-items:center;gap:8px;margin:15px 0 8px;font:700 8px DM Mono;display:flex}.paper-upload-divider:before,.paper-upload-divider:after{content:"";background:#c8c8c3;flex:1;height:1px}.annotated-paper-viewer{background:#333;flex-direction:column;height:100%;min-height:0;display:flex}.annotated-paper-toolbar{color:#fff;background:#242424;border-bottom:1px solid #555;flex-wrap:wrap;align-items:center;gap:12px;padding:8px 10px;font:700 9px DM Mono;display:flex}.annotated-tool-group,.annotated-color-group,.annotated-page-controls{align-items:center;gap:5px;display:flex}.annotated-paper-toolbar button{color:#ddd;cursor:pointer;text-transform:uppercase;background:0 0;border:1px solid #777;padding:7px 9px;font:700 9px DM Mono}.annotated-paper-toolbar button:hover,.annotated-paper-toolbar button.selected{color:#fff;background:#315d9b;border-color:#78a9ff}.annotated-color-group button{border:2px solid #aaa;border-radius:50%;width:18px;height:18px;padding:0}.annotated-color-group button.selected{border-color:#fff;box-shadow:0 0 0 2px #315d9b}.annotated-page-controls{margin-left:auto}.annotated-page-controls span{text-align:center;min-width:58px}.annotated-page-controls button{padding:6px 8px}.annotated-page-controls button:disabled{opacity:.4;cursor:not-allowed}.annotated-paper-stage{background:#555;flex:1;min-height:0;padding:18px;overflow:auto}.annotated-paper-canvas-wrap{width:max-content;max-width:100%;margin:0 auto;position:relative;box-shadow:0 3px 12px #1118}.annotated-paper-base{background:#fff;max-width:100%;height:auto;display:block}.annotated-paper-ink{touch-action:none;cursor:crosshair;width:100%;height:100%;position:absolute;inset:0}.annotated-paper-state{color:#ddd;text-transform:uppercase;place-items:center;min-height:240px;font:700 11px DM Mono;display:grid}.annotated-paper-error{color:#ffaaa5;text-align:center;padding:25px}@media (width<=520px){.paper-upload-actions{grid-template-columns:1fr}.paper-grading-score strong{font-size:34px}.paper-mistake-heading{flex-direction:column;gap:3px}.paper-result-main{padding:38px 17px 55px}.paper-result-heading{display:block}.paper-result-heading h1{font-size:48px}.paper-result-actions{width:100%;margin-top:24px}.paper-result-meta{flex-direction:column;gap:8px}.paper-result-report{padding:18px 14px;box-shadow:4px 4px #111}.paper-result-report .paper-grading-score strong{font-size:40px}.paper-result-footer-actions{flex-direction:column;align-items:flex-start}.annotated-paper-toolbar{gap:6px;padding:6px}.annotated-page-controls{justify-content:center;width:100%;margin-left:0}}.paper-viewer-layout>*{min-width:0}.paper-document{height:clamp(760px,100vh - 150px,1123px);min-height:760px}.paper-viewer-layout.no-timer{grid-template-columns:minmax(0,1fr)}@media (width<=900px){.paper-viewer-layout{grid-template-columns:minmax(0,1fr)}.paper-document{height:75vh;min-height:520px}}@media (width<=520px){.paper-document{height:70vh;min-height:450px}}.annotated-paper-viewer .annotated-paper-stage{touch-action:none;overscroll-behavior:contain;scrollbar-gutter:stable;min-width:0;position:relative}.annotated-paper-viewer .annotated-paper-stage:focus-visible{outline-offset:-2px;outline:2px solid #78a9ff}.annotated-paper-viewer .annotated-paper-canvas-wrap{max-width:none}.annotated-paper-viewer .annotated-paper-base{pointer-events:none;width:100%;max-width:none}.annotated-paper-viewer .annotated-paper-ink{-webkit-user-select:none;user-select:none}.annotated-paper-viewer .tool-hand,.annotated-paper-viewer .tool-hand .annotated-paper-ink{cursor:grab}.annotated-paper-viewer .tool-hand:active,.annotated-paper-viewer .tool-hand:active .annotated-paper-ink{cursor:grabbing}.annotated-gesture-help{color:#ddd;background:#242424;margin:0;padding:8px 12px;font:11px/1.5 sans-serif}.annotated-zoom-controls,.annotated-width-control,.annotated-touch-control{align-items:center;gap:6px;display:flex}.annotated-width-control select{color:#fff;background:#242424;border:1px solid #777;border-radius:4px;padding:6px}.annotated-touch-control{white-space:nowrap;font:11px sans-serif}.annotated-touch-control input{accent-color:#78a9ff;width:16px;height:16px}.annotated-zoom-controls output{text-align:center;font-variant-numeric:tabular-nums;min-width:4ch}.annotated-paper-viewer .annotated-paper-toolbar button{border-radius:4px;min-height:34px}.annotated-paper-viewer .annotated-color-group button{border-radius:50%;width:28px;height:28px;min-height:28px}.annotated-paper-viewer .annotated-paper-toolbar button:disabled{opacity:.4;cursor:not-allowed}@media (width<=520px){.annotated-paper-viewer .annotated-paper-toolbar{flex-shrink:0;max-height:185px;overflow-y:auto}.annotated-gesture-help{padding:5px 8px;font-size:10px}}.annotated-brush-settings{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.annotated-brush-settings label{white-space:nowrap;align-items:center;gap:6px;font:11px sans-serif;display:flex}.annotated-brush-settings select{color:#fff;background:#242424;border:1px solid #777;border-radius:4px;max-width:145px;padding:7px}.annotated-brush-settings input[type=range]{accent-color:#78a9ff;width:88px;min-height:32px}.annotated-brush-settings output{font-variant-numeric:tabular-nums;min-width:4ch}.annotated-stroke-preview{background:#fff;border-radius:4px;width:64px;height:24px}.annotated-eraser-cursor{z-index:3;pointer-events:none;mix-blend-mode:difference;box-sizing:border-box;border:1.5px solid #fff;border-radius:50%;position:absolute;transform:translate(-50%,-50%)}.annotated-paper-viewer .tool-eraser .annotated-paper-ink{cursor:none}.portal-page{color:#151515;background:#f1f2ef;min-height:100vh}.portal-header{background:#f7f7f4;border-bottom:2px solid #111;align-items:center;gap:30px;height:72px;padding:0 clamp(20px,5vw,78px);display:flex}.portal-header .countdown-brand{margin:auto}.portal-header-actions{text-transform:uppercase;color:#777;align-items:center;gap:15px;font:9px DM Mono;display:flex}.portal-header-actions button{text-transform:uppercase;cursor:pointer;background:0 0;border:1px solid #111;padding:8px 11px;font:700 9px DM Mono}.portal-main{padding-bottom:80px}.portal-hero{border-bottom:2px solid #111;grid-template-columns:1fr 260px;align-items:end;gap:40px;padding:78px clamp(25px,8vw,130px) 68px;display:grid}.portal-hero h1{letter-spacing:-2px;text-transform:uppercase;margin:20px 0;font:700 clamp(45px,6.4vw,84px)/.9 Arial Narrow,Impact,sans-serif}.portal-hero h1 em{color:#e52d27;font-style:normal}.portal-hero p{color:#5d5f60;max-width:500px;font:500 17px/1.45 Arial Narrow,Arial,sans-serif}.portal-hero-note{background:#e52d27;border:2px solid #111;flex-direction:column;gap:9px;padding:24px;display:flex;box-shadow:5px 5px #111}.portal-hero-note span,.portal-hero-note i{text-transform:uppercase;font:700 9px DM Mono}.portal-hero-note strong{font:700 64px/.9 Arial Narrow}.portal-hero-note i{font-style:normal}.portal-metrics{grid-template-columns:repeat(4,1fr);gap:15px;padding:50px clamp(25px,8vw,130px) 0;display:grid}.portal-metric{border:2px solid #111;flex-direction:column;justify-content:space-between;min-height:155px;padding:20px;display:flex}.portal-metric span,.portal-metric small{text-transform:uppercase;font:700 9px DM Mono}.portal-metric strong{text-transform:uppercase;font:700 42px/.9 Arial Narrow}.portal-metric small{color:#666;font-weight:400}.portal-metric.red{background:#ed2f27}.portal-metric.dark{color:#fff;background:#111}.portal-metric.dark small{color:#aaa}.portal-metric.light{background:#f8f8f4}.portal-metric.gold{background:#d9ab4b}.portal-trends{grid-template-columns:1fr 1fr;gap:15px;padding:15px clamp(25px,8vw,130px) 0;display:grid}.portal-trend-card,.portal-activity{background:#f8f8f4;border:2px solid #111;padding:24px}.portal-card-heading{border-bottom:1px solid #bbb;justify-content:space-between;align-items:flex-end;gap:20px;padding-bottom:16px;display:flex}.portal-card-heading h2{text-transform:uppercase;margin:9px 0 0;font:700 34px/.95 Arial Narrow}.portal-card-heading>span{text-transform:uppercase;color:#777;font:9px DM Mono}.trend-bars{align-items:end;gap:10px;height:240px;padding-top:25px;display:flex}.trend-bar-item{flex-direction:column;flex:1;justify-content:end;align-items:center;min-width:0;height:100%;display:flex}.trend-bar-track{background:#e5e5e0;border:1px solid #c7c7c1;align-items:end;width:100%;height:165px;display:flex}.trend-bar-fill{background:#e52d27;width:100%;min-height:8px}.trend-bar-item strong{margin-top:8px;font:700 9px DM Mono}.trend-bar-item small{color:#777;white-space:nowrap;text-overflow:ellipsis;max-width:100%;margin-top:5px;font:700 8px DM Mono;overflow:hidden}.portal-empty,.portal-state{color:#777;text-transform:uppercase;text-align:center;padding:35px 10px;font:700 10px DM Mono}.portal-state{flex-direction:column;justify-content:center;align-items:center;gap:10px;min-height:240px;display:flex}.portal-activity{margin:15px clamp(25px,8vw,130px) 0}.portal-activity-row{border-bottom:1px solid #ccc;grid-template-columns:72px 1fr auto;align-items:center;gap:15px;padding:16px 0;display:grid}.portal-activity-row:last-child{border-bottom:0}.portal-activity-row strong,.portal-activity-row small{display:block}.portal-activity-row strong{text-transform:uppercase;font:700 14px Arial Narrow}.portal-activity-row small{text-transform:uppercase;color:#777;margin-top:5px;font:9px DM Mono}.portal-activity-row>b{font:700 15px Arial Narrow}.activity-type{text-align:center;color:#fff;background:#111;padding:8px 5px;font:700 9px DM Mono}.activity-type.paper{background:#e52d27}@media (width<=850px){.portal-hero,.portal-trends{grid-template-columns:1fr}.portal-metrics{grid-template-columns:repeat(2,1fr)}.portal-header-actions>span{display:none}}@media (width<=520px){.portal-header{padding:0 17px}.portal-header .countdown-brand{font-size:17px}.portal-hero{padding:58px 20px 45px}.portal-metrics,.portal-trends{padding-left:20px;padding-right:20px}.portal-metrics{grid-template-columns:1fr}.portal-activity{margin-left:20px;margin-right:20px}.portal-activity-row{grid-template-columns:58px 1fr auto;gap:9px}.portal-activity-row strong{font-size:12px}.portal-card-heading h2{font-size:29px}}.portal-leaderboard{background:#fff;border:2px solid #111;margin:15px clamp(25px,8vw,130px) 0;padding:24px}.leaderboard-list{flex-direction:column;margin-top:6px;display:flex}.leaderboard-row{border-bottom:1px solid #d2d3cf;grid-template-columns:50px 38px minmax(0,1fr) 110px;align-items:center;gap:13px;padding:12px 0;display:grid}.leaderboard-row:last-child{border-bottom:0}.leaderboard-rank{color:#777;font:700 11px DM Mono}.leaderboard-avatar{color:#fff;background:#111;place-items:center;width:30px;height:30px;font:700 9px DM Mono;display:grid}.leaderboard-student{min-width:0}.leaderboard-student strong,.leaderboard-student small{display:block}.leaderboard-student strong{text-transform:uppercase;text-overflow:ellipsis;white-space:nowrap;font:700 14px Arial Narrow;overflow:hidden}.leaderboard-student small{color:#777;text-transform:uppercase;margin-top:4px;font:9px DM Mono}.leaderboard-row>b{text-align:right;white-space:nowrap;font:700 12px DM Mono}.leaderboard-row.current{color:#fff;background:#ed2f27;margin:0 -12px;padding-left:12px;padding-right:12px}.leaderboard-row.current .leaderboard-rank,.leaderboard-row.current .leaderboard-student small{color:#ffd7d4}.leaderboard-row.current .leaderboard-avatar{color:#111;background:#fff}.leaderboard-you{text-transform:uppercase;border-top:2px solid #111;justify-content:space-between;align-items:center;margin-top:12px;padding-top:15px;font:700 10px DM Mono;display:flex}@media (width<=520px){.portal-leaderboard{margin-left:20px;margin-right:20px;padding:18px 14px}.leaderboard-row{grid-template-columns:32px 30px minmax(0,1fr) 78px;gap:8px}.leaderboard-avatar{width:27px;height:27px}.leaderboard-student strong{font-size:12px}.leaderboard-row>b{font-size:9px}.leaderboard-student small{font-size:8px}}.math-chat-widget{--chat-ink:#191919;--chat-red:#e6322b;--chat-blue:#1854b8;--chat-paper:#f5f4ef;--chat-muted:#74736e;--chat-ease:cubic-bezier(.2,0,0,1);z-index:900;color:var(--chat-ink);font-family:DM Sans,Arial,sans-serif;position:fixed;bottom:24px;right:24px}.math-chat-launcher{width:138px;height:194px;color:var(--chat-ink);cursor:pointer;filter:drop-shadow(0 4px 1px #0000001f);background:0 0;border:0;padding:0;transition:filter .2s;display:block;position:relative}.math-chat-launcher:hover{filter:drop-shadow(0 7px 2px #0000002b)}.math-chat-launcher:focus-visible{outline:3px solid var(--chat-red);outline-offset:2px;border-radius:48%}.math-chat-launcher.is-open{opacity:.82}.math-chat-mascot{flex:none;width:54px;height:54px;display:block}.math-chat-standing-teacher{transform-origin:50% 100%;width:132px;height:190px;animation:3.6s ease-in-out infinite math-chat-idle;position:absolute;bottom:0;right:2px;overflow:visible}.math-chat-standing-body{transform-box:fill-box;transform-origin:50% 100%;animation:3.6s ease-in-out infinite math-chat-bob}.math-chat-wave-arm{transform-box:view-box;transform-origin:91px 97px;animation:2.8s ease-in-out infinite math-chat-wave}.math-chat-pointing-arm{transform-box:view-box;transform-origin:51px 96px}.math-chat-sparkle{transform-box:fill-box;transform-origin:50%;animation:2s ease-in-out infinite math-chat-sparkle}.math-chat-speech{z-index:1;border:1.5px solid var(--chat-ink);box-shadow:2px 2px 0 var(--chat-ink);text-transform:uppercase;white-space:nowrap;background:#fff3d3;padding:7px 10px;font:700 9px DM Mono,monospace;position:absolute;top:1px;left:-31px;transform:rotate(-4deg)}.math-chat-speech:after{content:"";border-right:1.5px solid var(--chat-ink);border-bottom:1.5px solid var(--chat-ink);background:#fff3d3;width:9px;height:9px;position:absolute;bottom:-6px;right:11px;transform:rotate(45deg)}@keyframes math-chat-idle{0%,to{transform:rotate(0)}50%{transform:rotate(1.2deg)}}@keyframes math-chat-bob{0%,to{transform:translateY(0)}50%{transform:translateY(-2.5px)}}@keyframes math-chat-wave{0%,65%,to{transform:rotate(0)}72%,82%{transform:rotate(-7deg)}77%,88%{transform:rotate(4deg)}}@keyframes math-chat-sparkle{0%,to{opacity:.75;transform:scale(.92)}50%{opacity:1;transform:scale(1.12)}}.math-chat-panel{box-sizing:border-box;border:2px solid var(--chat-ink);background:#fff;flex-direction:column;width:390px;max-width:calc(100vw - 32px);height:min(590px,100dvh - 220px);min-height:340px;animation:.2s ease-out math-chat-pop;display:flex;position:absolute;bottom:187px;right:0;overflow:hidden;box-shadow:7px 7px #19191938}@keyframes math-chat-pop{0%{opacity:0;transform:translateY(8px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}.math-chat-header{border-bottom:2px solid var(--chat-ink);background:var(--chat-paper);align-items:center;gap:11px;padding:11px 14px;display:flex}.math-chat-header .math-chat-mascot{width:48px;height:48px}.math-chat-heading{flex:1;min-width:0}.math-chat-heading strong{text-transform:uppercase;letter-spacing:.02em;font:700 15px Arial Narrow,Arial,sans-serif;display:block}.math-chat-heading span{color:var(--chat-muted);align-items:center;gap:6px;margin-top:4px;font:10px DM Mono,monospace;display:flex}.math-chat-heading i{background:#54a66b;border-radius:50%;width:7px;height:7px}.math-chat-close{width:32px;height:32px;color:var(--chat-ink);cursor:pointer;background:#fff;border:1px solid #c9c8c2;font:24px/1 Arial}.math-chat-close:hover{border-color:var(--chat-ink);background:#f7c94d}.math-chat-messages{background:linear-gradient(#fff,#fbfaf7);flex:1;min-height:0;padding:16px;overflow-y:auto}.math-chat-welcome{text-align:center;max-width:310px;margin:17px auto}.math-chat-kicker{color:var(--chat-red);letter-spacing:.11em;font:700 9px DM Mono,monospace}.math-chat-welcome h2{text-transform:uppercase;margin:8px 0 5px;font:700 24px/1 Arial Narrow,Arial,sans-serif}.math-chat-welcome p{color:#62615d;margin:0;font-size:12px;line-height:1.5}.math-chat-starters{text-align:left;gap:8px;margin-top:19px;display:grid}.math-chat-starters button{text-align:left;color:var(--chat-ink);cursor:pointer;background:#fff;border:1px solid #d8d6ce;justify-content:space-between;align-items:center;gap:12px;padding:10px 11px;font:500 12px DM Sans,Arial,sans-serif;display:flex}.math-chat-starters button:hover{border-color:var(--chat-ink);background:#fff3d3}.math-chat-starters button span{color:var(--chat-red);font-size:16px}.math-chat-message{animation:math-chat-message-in .32s var(--chat-ease) both;align-items:flex-end;gap:7px;margin:12px 0;display:flex}.math-chat-message .math-chat-mascot{width:30px;height:30px}.math-chat-bubble{box-sizing:border-box;overflow-wrap:anywhere;background:#fff;border:1px solid #deddd7;border-radius:14px 14px 14px 4px;min-width:0;max-width:84%;padding:12px 14px;font-size:13px;line-height:1.65;box-shadow:0 3px 10px #19191908}.from-user{justify-content:flex-end}.from-user .math-chat-bubble{border-color:var(--chat-ink);background:var(--chat-ink);color:#fff;border-radius:14px 14px 4px}.from-teacher .math-chat-mascot{animation:math-chat-avatar-in .4s var(--chat-ease) both}@keyframes math-chat-message-in{0%{opacity:0;transform:translateY(12px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes math-chat-avatar-in{0%{transform:translateY(5px)rotate(-8deg)scale(.88)}to{transform:translateY(0)rotate(0)scale(1)}}.math-chat-response,.math-chat-copy{white-space:pre-wrap}.math-chat-copy code{color:var(--chat-blue);background:#edf3ff;border-radius:4px;padding:2px 5px;font:600 12px DM Mono,monospace}.math-chat-copy strong{color:var(--chat-blue);font-weight:750}.math-chat-copy em{color:var(--chat-blue)}.math-chat-formula-source{color:var(--chat-blue);font-family:Georgia,serif;font-weight:700}.math-chat-formula{max-width:100%;color:var(--chat-blue);margin-inline:.12em;display:inline-block}.math-chat-formula.display{border:1px solid #dbe7ff;border-left:3px solid var(--chat-blue);text-align:center;background:#edf3ff;border-radius:8px;max-width:100%;margin:10px 0;padding:12px 9px;display:block;overflow-x:auto}.math-chat-formula.display .katex-display{margin:0}.math-chat-formula .katex{font-size:1.06em;font-weight:600}.math-chat-copy code{margin-inline:.12em}.math-chat-paragraph{white-space:pre-wrap;margin:0 0 12px}.math-chat-paragraph:last-child{margin-bottom:0}.math-chat-visual{white-space:normal;background:#fff;border:1px solid #dbe7ff;border-radius:10px;min-width:0;max-width:100%;margin:14px 0;padding:10px 6px}.math-chat-visual figcaption{color:var(--chat-blue);padding:0 5px 5px;font-size:12px;font-weight:750}.math-chat-visual svg{width:100%;height:auto;display:block;overflow:hidden}.math-chat-grid line{stroke:#e3e9f1;stroke-width:1px}.math-chat-grid text{fill:#586478;font:11px DM Sans,Arial,sans-serif}.math-chat-grid .math-chat-axis{fill:none;stroke:#7c899d;stroke-width:1.4px}.math-chat-geometry-label{fill:var(--chat-blue);paint-order:stroke;stroke:#fff;stroke-width:3px;stroke-linejoin:round;font:600 13px DM Sans,Arial,sans-serif}.math-chat-visual p,.math-chat-visual-fallback{color:#626b79;margin:6px 5px 0;font-size:11px;line-height:1.5}.math-chat-legend{flex-wrap:wrap;gap:5px 12px;padding:0 5px;font-size:11px;font-weight:650;display:flex}.math-chat-legend span:before{content:"—";margin-right:4px}.math-chat-error{color:#8e201b;background:#fff0ee;border:1px solid #e7a09b;margin:10px 0 0;padding:9px 10px;font-size:12px;line-height:1.4}.math-chat-error button{color:inherit;cursor:pointer;background:0 0;border:0;margin-left:8px;text-decoration:underline}.math-chat-thinking{color:#74736e;background:linear-gradient(110deg,#fff,#edf3ff,#fff) 0 0/200% 100%;align-items:center;gap:4px;animation:2.4s ease-in-out infinite math-chat-thinking-glow;display:flex}.math-chat-thinking i{background:var(--chat-blue);border-radius:50%;flex:none;width:5px;height:5px;animation:1s ease-in-out infinite alternate math-chat-dot}.math-chat-thinking i:nth-child(2){animation-delay:.2s}.math-chat-thinking i:nth-child(3){animation-delay:.4s}.math-chat-thinking span{margin-left:5px;font-size:11px}@keyframes math-chat-dot{to{opacity:.25;transform:translateY(-3px)}}@keyframes math-chat-thinking-glow{0%,to{background-position:0%}50%{background-position:100%}}.math-chat-starters button,.math-chat-composer button,.math-chat-close{transition:transform .18s var(--chat-ease),background-color .18s ease,border-color .18s ease}.math-chat-starters button:hover{transform:translate(3px)}.math-chat-composer button:not(:disabled):hover{transform:translateY(-2px)}.math-chat-composer button:not(:disabled):active,.math-chat-starters button:active,.math-chat-close:active{transform:scale(.96)}.math-chat-composer{background:#fff;border:1px solid #c9c8c2;align-items:flex-end;gap:8px;min-width:0;margin:0 13px;padding:8px 9px;display:flex}.math-chat-composer:focus-within{border-color:var(--chat-ink);box-shadow:2px 2px #f7c94d}.math-chat-composer textarea{resize:vertical;width:0;min-width:0;max-height:100px;box-shadow:none;color:var(--chat-ink);background:0 0;border:0;outline:0;flex:1 1 0;font:13px/1.45 DM Sans,Arial,sans-serif;display:block}.math-chat-composer textarea:focus{box-shadow:none;outline:0}.math-chat-composer textarea::placeholder{color:#92918b}.math-chat-composer button{border:1px solid var(--chat-ink);background:var(--chat-red);color:#fff;white-space:nowrap;cursor:pointer;flex:none;justify-content:center;align-items:center;min-width:54px;height:33px;padding:0 8px;font:700 10px/1 DM Mono,monospace;display:inline-flex}.math-chat-composer button:disabled{color:#96958e;cursor:not-allowed;background:#deddd7;border-color:#c9c8c2}.math-chat-footnote{text-align:center;color:#898881;padding:7px 13px 9px;font:9px DM Mono,monospace}@media (width<=600px){.math-chat-widget{bottom:9px;right:8px}.math-chat-launcher{width:112px;height:160px}.math-chat-standing-teacher{width:110px;height:158px;right:0}.math-chat-speech{padding:6px 8px;font-size:8px;top:0;left:-24px}.math-chat-panel{width:390px;max-width:calc(100vw - 20px);height:min(570px,100dvh - 184px);min-height:300px;max-height:calc(100dvh - 184px);bottom:155px;right:0}}@media (prefers-reduced-motion:reduce){.math-chat-widget *,.math-chat-widget :before,.math-chat-widget :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}.math-chat-starters button:hover,.math-chat-composer button:not(:disabled):hover,.math-chat-composer button:not(:disabled):active,.math-chat-starters button:active,.math-chat-close:active{transform:none}}@media (width<=1024px){.math-chat-widget{bottom:12px;right:12px}.math-chat-launcher{width:60px;height:86px}.math-chat-standing-teacher{width:60px;height:86px;right:0}.math-chat-speech{display:none}.math-chat-panel{height:min(570px,100dvh - 116px);min-height:min(300px,100dvh - 116px);max-height:calc(100dvh - 116px);bottom:96px}}:is(.pastpapers-page,.paper-viewer-page,.paper-result-page,.auth-page)+.math-chat-widget{bottom:12px;right:12px}:is(.pastpapers-page,.paper-viewer-page,.paper-result-page,.auth-page)+.math-chat-widget .math-chat-launcher{width:60px;height:86px}:is(.pastpapers-page,.paper-viewer-page,.paper-result-page,.auth-page)+.math-chat-widget .math-chat-standing-teacher{width:60px;height:86px;right:0}:is(.pastpapers-page,.paper-viewer-page,.paper-result-page,.auth-page)+.math-chat-widget .math-chat-speech{display:none}:is(.pastpapers-page,.paper-viewer-page,.paper-result-page,.auth-page)+.math-chat-widget .math-chat-panel{max-height:calc(100dvh - 116px);bottom:96px}.notes-page{--nt-paper:#fffaf2;--nt-ink:#282521;--nt-muted:#665f55;min-height:100vh;color:var(--nt-ink);overflow-wrap:break-word;background:#f6f0e5;font:16px/1.65 Space Grotesk,Arial,sans-serif}.notes-page *{box-sizing:border-box}.notes-page button{font:inherit;cursor:pointer;color:inherit}.notes-page button:focus-visible,.notes-page summary:focus-visible{outline-offset:4px;outline:3px solid #285bc4}.notes-page h1,.notes-page h2,.notes-page h3,.notes-page p{margin:0}.notes-page p+p{margin-top:12px}.notes-page h3{margin-bottom:10px;font-size:19px;line-height:1.35}.notes-page b{font-weight:700}.nt-header{z-index:20;border-bottom:2px solid var(--nt-ink);background:#f6f0e5;justify-content:space-between;align-items:center;gap:16px;height:78px;padding:0 clamp(18px,4vw,60px);display:flex;position:sticky;top:0}.nt-header :is(button,a){background:0 0;border:0;align-items:center;gap:9px;min-height:44px;font-size:12px;font-weight:700;display:flex}.nt-header .math-talk-name{font-size:25px}.nt-shell{grid-template-columns:254px minmax(0,1fr);gap:48px;max-width:1450px;margin:auto;padding:0 40px;display:grid}.nt-sidebar{border-right:1px solid #d8d0c3;height:calc(100svh - 78px);padding:36px 24px 35px 0;position:sticky;top:78px;overflow:auto}.nt-label{letter-spacing:1.3px;align-items:center;gap:8px;font:700 10px/1.5 DM Mono,monospace;display:flex}.nt-course{margin:22px 0 32px;font-size:15px;font-weight:700;line-height:1.5}.nt-course span{color:var(--nt-muted);font-size:12px;font-weight:400;display:block}.nt-chapter-label{color:var(--nt-muted);letter-spacing:1px;font:11px DM Mono,monospace}.nt-sidebar>h2{letter-spacing:-1px;margin:5px 0 18px;font-size:31px}.nt-topic-nav{gap:8px;display:grid}.nt-topic-nav button{text-align:left;background:0 0;border:1px solid #0000;border-radius:5px;align-items:center;gap:10px;min-height:44px;padding:11px 9px;font-size:12px;font-weight:600;display:flex}.nt-topic-nav button span{font:11px DM Mono,monospace}.nt-topic-nav button svg{flex-shrink:0;margin-left:auto}.nt-topic-nav button.active{border-color:var(--nt-ink);background:var(--nd-lime);box-shadow:3px 3px 0 var(--nt-ink)}.nt-on-page{margin-top:32px}.nt-on-page nav{gap:3px;margin-top:13px;display:grid}.nt-on-page button{text-align:left;color:var(--nt-muted);background:0 0;border:0;border-left:2px solid #0000;align-items:baseline;gap:9px;min-height:36px;padding:8px;font-size:11px;line-height:1.5;display:flex}.nt-on-page button.active{border-left-color:var(--nt-ink);color:var(--nt-ink);background:#eae3d6;font-weight:700}.nt-on-page button span{font:9px DM Mono,monospace}.nt-sidebar-tip{background:#eee4d4;border-radius:5px;margin-top:30px;padding:17px}.nt-sidebar-tip>span{font:9px DM Mono,monospace}.nt-sidebar-tip p{margin-top:9px;font-size:14px;line-height:1.65}.nt-main{min-width:0;max-width:990px;padding-top:33px;padding-bottom:60px}.nt-breadcrumb{letter-spacing:1px;color:var(--nt-muted);gap:12px;font:10px DM Mono,monospace;display:flex}.nt-breadcrumb span{color:#b6ac9b}.nt-hero{grid-template-columns:minmax(0,1.25fr) minmax(200px,.75fr);align-items:center;gap:30px;padding:38px 0 30px;display:grid}.nt-hero h1{letter-spacing:-3px;margin:18px 0;font:700 clamp(42px,5.1vw,72px)/1.04 Space Grotesk,Arial,sans-serif}.nt-hero mark{color:inherit;background:linear-gradient(#0000 53%,#df0 53%);padding:0 3px}.nt-hero p{color:var(--nt-muted);max-width:430px;font-size:15px;line-height:1.7}.nt-hero-meta{flex-wrap:wrap;gap:8px 14px;margin-top:22px;font:9px DM Mono,monospace;display:flex}.nt-hero-meta span{align-items:center;gap:4px;display:flex}.nt-hero-art{border:2px solid var(--nt-ink);min-height:245px;box-shadow:6px 6px 0 var(--nt-ink);background-color:#91dfff;background-image:linear-gradient(#28252113 1px,#0000 1px),linear-gradient(90deg,#28252113 1px,#0000 1px);background-size:23px 23px;border-radius:4px;flex-direction:column;justify-content:center;align-items:center;gap:14px;display:flex;position:relative;transform:rotate(2deg)}.nt-art-index{font:11px DM Mono,monospace;position:absolute;top:12px;left:15px}.nt-hero-art>b{letter-spacing:1px;font:700 27px Georgia,serif}.nt-hero-art>strong{background:var(--nt-paper);border:1px solid var(--nt-ink);padding:9px 12px;font:700 22px Georgia,serif;transform:rotate(-5deg)}.nt-art-stamp{border:2px solid var(--nt-ink);background:#ff7fa8;padding:10px;font:700 9px/1.4 DM Mono,monospace;position:absolute;bottom:-12px;right:-10px;transform:rotate(-8deg)}.nt-art-circles{padding-right:30px;display:flex}.nt-art-circles i{border:2px solid var(--nt-ink);background:#ff7fa880;border-radius:50%;place-items:center;width:80px;height:80px;margin-right:-30px;font:italic 24px Georgia;display:grid}.nt-art-circles i+i{background:#ddff0080}.nt-learning{border-top:1px solid #bcb2a2;border-bottom:1px solid #bcb2a2;align-items:baseline;gap:20px;padding:18px 0;display:flex}.nt-learning>span{white-space:nowrap;font:700 9px DM Mono,monospace}.nt-learning p{color:var(--nt-muted);font-size:12px}.nt-section{padding-top:48px;scroll-margin-top:102px}.nt-section-heading{align-items:baseline;gap:14px;margin-bottom:22px;display:flex}.nt-section-heading>span{color:var(--nt-muted);font:11px DM Mono,monospace}.nt-section-heading h2{letter-spacing:-.9px;font-size:28px;line-height:1.23}.nt-section>p{margin:0 0 20px}.nt-section>h3{margin-top:25px}.nt-lead{max-width:760px;font-size:17px}.nt-two-col{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:24px;margin:22px 0;display:grid}.nt-two-col>div{min-width:0}.nt-two-col p{font-size:14px}.nt-panel{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:7px;height:100%;padding:23px}.nt-caption,.notes-page .nt-caption{color:var(--nt-muted);margin-top:12px;font-size:12px;line-height:1.65;display:block}.nt-family{border:2px solid var(--nt-ink);background:#ede6d8;border-radius:8px;padding:20px}.nt-family-label{justify-content:space-between;gap:12px;margin-bottom:16px;font:700 11px DM Mono,monospace;display:flex}.nt-family-label span{font:400 12px Space Grotesk,sans-serif}.nt-family-grid{grid-template-columns:1.4fr 1fr;gap:15px;display:grid}.nt-family-grid b,.nt-family-grid span,.nt-family-grid small{display:block}.nt-family-grid b{margin-bottom:6px;font-size:17px}.nt-family-grid span{font-size:13px;line-height:1.5}.nt-family-grid small{margin-top:10px;font-size:12px}.nt-rational{background:#91dfff60;border:1px solid #282521;border-radius:5px;padding:18px}.nt-integers{background:#ff7fa875;border:1px solid #282521;border-radius:4px;margin-top:16px;padding:14px}.nt-natural{background:#df0;border:1px solid #282521;border-radius:4px;margin-top:12px;padding:12px}.nt-irrational{background:var(--nt-paper);border:1px dashed var(--nt-ink);border-radius:5px;flex-direction:column;justify-content:center;padding:20px;display:flex}.nt-irrational strong{margin:20px 0 8px;font:27px Georgia,serif}.nt-lab{background:var(--nt-paper);border:2px solid var(--nt-ink);border-radius:8px;margin:24px 0;padding:24px;box-shadow:4px 4px #d8d0c3}.nt-number-options{flex-wrap:wrap;gap:8px;margin:18px 0;display:flex}.nt-number-options button{background:0 0;border:1px solid #bdb3a4;border-radius:5px;min-width:51px;min-height:44px;padding:5px 10px;font-size:20px}.nt-number-options button[aria-pressed=true],.nt-operation-options button[aria-pressed=true]{background:var(--nt-ink);border-color:var(--nt-ink);color:#df0}.nt-number-result{border-top:1px solid #d6cdbf;grid-template-columns:85px minmax(0,1fr);align-items:center;gap:20px;min-height:144px;padding-top:18px;display:grid}.nt-number-result>strong{text-align:center;font:42px Georgia,serif}.nt-number-result p{margin-top:10px;font-size:14px}.nt-tags{flex-wrap:wrap;gap:6px;display:flex}.nt-tags span{background:#edf4d4;border:1px solid #a4b184;border-radius:4px;padding:3px 8px;font-size:10px;font-weight:700}.nt-callout{background:#e5eddc;border-left:4px solid #456541;gap:6px;margin:24px 0;padding:16px 20px;font-size:14px;display:grid}.nt-callout>strong{text-transform:uppercase;letter-spacing:1px;font:700 10px DM Mono,monospace}.nt-warning{background:#f9e0e1;border-left-color:#b74c60}.nt-dot-square{grid-template-columns:repeat(4,12px);align-content:center;gap:7px;height:110px;margin-bottom:15px;display:grid}.nt-dot-square i{border:1px solid var(--nt-ink);background:#ff7fa8;border-radius:50%;width:12px;height:12px}.nt-cube{height:110px;margin-bottom:15px;display:block}.nt-sequence{border-top:1px solid #d5cbbc;margin-top:16px;padding-top:12px;font:13px/1.9 DM Mono,monospace}.nt-prime-strip{flex-wrap:wrap;gap:7px;display:flex}.nt-prime-strip span{border:1px solid var(--nt-ink);background:#df0;border-radius:50%;place-items:center;width:44px;height:44px;font:15px DM Mono,monospace;display:grid}.nt-example{background:#eee7da;border:1px solid #cec3b2;border-radius:8px;margin:24px 0;padding:26px}.nt-example>.nt-label{color:#645540;margin-bottom:9px}.nt-example>h3{margin-bottom:17px;font-size:20px}.nt-figure{min-width:0;margin:0}.nt-figure svg{width:100%;height:auto;max-height:310px;display:block}.nt-figure figcaption{color:var(--nt-muted);margin-top:12px;font-size:11px;line-height:1.6}.nt-steps{margin:0;padding-left:19px;font-size:14px}.nt-steps li{padding:0 0 13px 5px}.nt-factor-overlap{border:1px solid var(--nt-ink);border-radius:6px;grid-template-columns:1fr 1.8fr 1fr;margin:22px 0;display:grid;overflow:hidden}.nt-factor-overlap>div{text-align:center;background:#91dfff;flex-direction:column;justify-content:center;gap:10px;padding:18px 9px;display:flex}.nt-factor-overlap>div:nth-child(2){border-inline:1px solid var(--nt-ink);background:#df0}.nt-factor-overlap>div:last-child{background:#ff7fa8}.nt-factor-overlap span{font:9px/1.5 DM Mono,monospace}.nt-factor-overlap strong{font-size:20px}.nt-reciprocals{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:24px 0;display:grid}.nt-reciprocals>div{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:6px;padding:18px}.nt-reciprocals span{font:22px Georgia,serif;display:block}.nt-reciprocals small{margin-top:12px;font-size:11px;display:block}.nt-place-value{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin:22px 0;display:grid}.nt-place-value>div{text-align:center;border:1px solid var(--nt-ink);background:var(--nt-paper);border-radius:5px;padding:14px 5px}.nt-place-value>div:first-child{background:#df0}.nt-place-value strong{font:32px DM Mono,monospace;display:block}.nt-place-value span{font-size:11px}.nt-equation{overflow-wrap:anywhere;margin:13px 0;font:600 clamp(16px,1.6vw,22px)/1.7 Space Grotesk,Arial,sans-serif}.nt-practice{border-top:2px solid var(--nt-ink);margin-top:24px}.nt-practice>div{border-bottom:1px solid #cec3b2;grid-template-columns:32px minmax(0,1fr);gap:15px;padding:24px 0;display:grid}.nt-question-number{border:1px solid var(--nt-ink);background:#ff7fa8;border-radius:50%;place-items:center;width:29px;height:29px;font:12px DM Mono,monospace;display:grid}.nt-practice p{font-size:15px}.nt-practice summary{cursor:pointer;align-items:center;gap:10px;width:fit-content;margin-top:14px;font-size:12px;font-weight:700;list-style:none;display:flex}.nt-practice summary::-webkit-details-marker{display:none}.nt-practice details[open] summary svg{transform:rotate(180deg)}.nt-answer{background:#e3ebd8;border-left:3px solid #426643;margin-top:14px;padding:16px;font-size:14px;line-height:1.7}.nt-notation{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:8px;margin:24px 0;display:grid;overflow:hidden}.nt-notation>div{border-bottom:1px solid #ded5c7;grid-template-columns:110px minmax(0,1fr);align-items:center;gap:23px;padding:19px 23px;display:grid}.nt-notation>div:last-child{border:0}.nt-notation>div>strong{text-align:center;font:23px Georgia,serif}.nt-notation h3{margin-bottom:4px;font-size:15px}.nt-notation p{font-size:13px}.nt-operation-options{flex-wrap:wrap;gap:7px;margin:19px 0;display:flex}.nt-operation-options button{white-space:nowrap;background:0 0;border:1px solid #c6bdad;border-radius:5px;flex:1;min-width:84px;padding:10px 5px;font-size:19px}.nt-operation-options small{margin-top:4px;font-size:9px;display:block}.nt-venn-layout{grid-template-columns:1.4fr 1fr;align-items:center;gap:24px;margin-bottom:0}.nt-venn-result h3{font:30px Georgia,serif}.nt-venn-result p{font-size:14px}.nt-inline-button{border:1px solid var(--nt-ink);background:var(--nt-paper);border-radius:4px;align-items:center;gap:10px;min-height:44px;padding:8px 12px;display:flex;font-size:12px!important}.nt-builders>div{grid-template-columns:135px minmax(0,1fr)}.nt-builders>div>strong{font-size:18px}.nt-subset{border:2px solid var(--nt-ink);background:#91dfff;border-radius:50%;align-items:center;gap:38px;max-width:300px;height:150px;margin:20px auto;padding:25px 38px;display:flex;position:relative}.nt-subset>span{position:absolute;top:8px;right:65px}.nt-subset>div{border:2px solid var(--nt-ink);background:#df0;border-radius:50%;place-items:center;min-width:120px;height:100px;line-height:1.3;display:grid}.nt-footer{border-top:2px solid var(--nt-ink);margin-top:55px;padding-top:30px}.nt-footer>p{letter-spacing:-.5px;margin:12px 0 20px;font-size:23px}.nt-footer :is(button,a){border:2px solid var(--nt-ink);min-height:48px;box-shadow:3px 3px 0 var(--nt-ink);background:#df0;border-radius:5px;align-items:center;gap:25px;padding:10px 18px;font-size:13px;font-weight:700;display:flex}.nt-footer small{max-width:580px;color:var(--nt-muted);margin-top:28px;font-size:11px;display:block}.notes-page button:hover{filter:brightness(.96)}.nt-mobile-topic{display:none}.nt-fraction{vertical-align:middle;text-align:center;flex-direction:column;min-width:1em;margin:0 .15em;font-size:.85em;line-height:1.1;display:inline-flex}.nt-fraction>span{padding:2px 4px}.nt-fraction>span:first-child{border-bottom:1px solid}.nt-recurring{white-space:nowrap;display:inline-block}.nt-recurring>span,.nt-recurring.single{position:relative}.nt-recurring>span:before,.nt-recurring.single:before{content:"·";line-height:1;position:absolute;top:-.62em;left:50%;transform:translate(-50%)}.nt-recurring-examples{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:7px;gap:12px;margin:22px 0;padding:22px;font-size:20px;display:grid}.nt-lab-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;display:flex}.nt-lab-heading .nt-inline-button{font-size:11px!important}.nt-recall-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:16px 0 25px;display:grid}.nt-recall-grid>div{background:#eee7da;border:1px solid #d6cbb9;border-radius:5px;padding:11px 12px;font-size:15px}.nt-recall-grid b{font-size:20px;display:block}.nt-recall-grid sup{font-size:.7em}.nt-hundred{aspect-ratio:1;grid-template-columns:repeat(10,1fr);gap:3px;width:100%;max-width:280px;display:grid}.nt-hundred i{background:#eee7da;border:1px solid #c6bdad;border-radius:2px}.nt-hundred i.filled{background:#ff7fa8;border-color:#9a5268}.notes-page input[type=range]{accent-color:#426c26;cursor:pointer;width:100%;min-height:32px;margin:24px 0;display:block}.notes-page select{color:#282521;background:#fffaf2;border:1px solid #a59a88;border-radius:5px;width:100%;min-height:46px;margin:18px 0;padding:10px 32px 10px 12px;font:14px Space Grotesk,Arial,sans-serif;display:block}.nt-flow{flex-wrap:wrap;align-items:center;gap:12px;margin:22px 0;display:flex}.nt-flow>span{background:#e4edcf;border:1px solid #b6c49c;border-radius:4px;padding:8px 12px;font-size:15px}.nt-table-wrap{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:7px;margin:24px 0;overflow-x:auto}.nt-table{border-collapse:collapse;text-align:left;width:100%;min-width:440px;font-size:13px}.nt-table caption{text-align:left;letter-spacing:.5px;background:#e9e2d5;padding:16px 18px;font:700 10px/1.5 DM Mono,monospace}.nt-table th{background:#eee7da;font-size:12px}.nt-table td,.nt-table th{vertical-align:top;border-bottom:1px solid #ded5c7;padding:13px 18px}.nt-table tr:last-child td{border:0}.nt-table sup{font-size:.8em}.nt-line-figure{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:7px;margin:24px 0;padding:15px}.nt-line-figure svg{font-family:Space Grotesk,Arial,sans-serif;font-size:16px}.nt-order-cards{flex-wrap:wrap;gap:10px;margin:20px 0;display:flex}.nt-order-cards>div{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:5px;flex:1;min-width:80px;padding:12px}.nt-order-cards strong,.nt-order-cards span{display:block}.nt-order-cards span{color:var(--nt-muted);margin-top:8px;font:13px DM Mono,monospace}.nt-operation-ladder{gap:8px;margin:24px 0;display:grid}.nt-operation-ladder>div{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:5px;grid-template-columns:32px 135px minmax(0,1fr);align-items:center;gap:13px;padding:15px;display:grid}.nt-operation-ladder b{background:#df0;border:1px solid #282521;border-radius:50%;place-items:center;width:28px;height:28px;font-size:12px;display:grid}.nt-operation-ladder strong{font-size:14px}.nt-operation-ladder span{color:var(--nt-muted);font-size:12px}.nt-power-pattern{border:1px solid #282521;border-radius:5px;grid-template-columns:repeat(7,minmax(0,1fr));margin:24px 0 10px;display:grid;overflow:hidden}.nt-power-pattern>div{text-align:center;background:#91dfff44;border-right:1px solid #b8b4aa;padding:16px 5px}.nt-power-pattern>div:last-child{border:0}.nt-power-pattern>div:nth-child(4){background:#df0}.nt-power-pattern span,.nt-power-pattern b{font-size:17px;display:block}.nt-power-pattern b{margin-top:12px;font-size:15px}.nt-bound-rectangle{background:#91dfff55;border:2px dashed #615745;flex-direction:column;justify-content:center;align-items:center;gap:18px;width:min(100%,330px);min-height:160px;margin:22px auto;font-size:14px;display:flex}.nt-ratio-bar{border:2px solid #282521;border-radius:5px;min-height:100px;margin:22px 0;display:flex;overflow:hidden}.nt-ratio-bar>div{background:#ff7fa8;flex-direction:column;justify-content:center;align-items:center;padding:12px;font-size:13px;line-height:1.4;display:flex}.nt-ratio-bar>div+div{background:#91dfff;border-left:2px solid #282521}.nt-ratio-bar b{font-size:26px}.nt-footer-nav{flex-wrap:wrap;gap:16px;display:flex}.nt-footer .nt-previous{background:var(--nt-paper);box-shadow:none}.nt-footer :is(button,a){white-space:normal;text-align:left;max-width:100%}.nt-hero h1{overflow-wrap:normal;font-size:clamp(38px,4.5vw,65px)}.nt-hero-art>strong{text-align:center;max-width:95%;font-size:clamp(16px,1.6vw,22px)}.notes-page+.math-chat-widget{bottom:12px;right:12px}.notes-page+.math-chat-widget .math-chat-launcher{width:60px;height:86px}.notes-page+.math-chat-widget .math-chat-standing-teacher{width:60px;height:86px;right:0}.notes-page+.math-chat-widget .math-chat-speech{display:none}.notes-page+.math-chat-widget .math-chat-panel{max-height:calc(100dvh - 116px);bottom:96px}.notes-page .nt-fraction{vertical-align:middle;text-align:center;font-family:inherit;font-size:.92em;font-weight:inherit;white-space:nowrap;flex-direction:column;align-items:stretch;min-width:1.05em;margin:.1em .18em;line-height:1.15;display:inline-flex}.notes-page .nt-fraction>span{font:inherit;color:inherit;margin:0;padding:.12em .22em;line-height:1.15;display:block}.notes-page .nt-fraction>span:first-child{border-bottom:1px solid}.notes-page sup .nt-fraction{margin:.05em .1em;font-size:.9em}.notes-page .nt-reciprocals>div>span{line-height:1.6}.notes-page .nt-equation{line-height:2}.nt-rate-formulas{flex-wrap:wrap;gap:14px;margin:24px 0;display:flex}.nt-rate-formulas>div{background:var(--nt-paper);text-align:center;border:1px solid #c6bdad;border-radius:6px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;min-width:170px;padding:20px;display:flex}.nt-rate-formulas>div>b{font-size:13px}.nt-rate-formulas>div>span{font-size:18px}.nt-journey{gap:10px;margin:22px 0;display:flex}.nt-journey>div{text-align:center;background:#91dfff55;border:1px solid #9bafb5;border-radius:5px;flex:1;padding:16px 10px}.nt-journey>div:nth-child(2){background:#ff7fa855;border-color:#c08f9d}.nt-journey b,.nt-journey span{display:block}.nt-journey b{font-size:19px}.nt-journey span{margin-top:8px;font-size:12px}.nt-calculator-screen{text-align:right;background:#e3edce;border:2px solid #282521;border-radius:6px;margin:24px 0;padding:22px;font:32px/1.4 DM Mono,monospace;box-shadow:inset 0 2px 4px #0001}.notes-page input[type=time]{color:#282521;background:var(--nt-paper);border:1px solid #a59a88;border-radius:5px;max-width:100%;min-height:46px;margin-top:16px;padding:10px;font:20px DM Mono,monospace}.nt-clock{width:100%;max-width:230px;height:auto;margin:auto;display:block}.nt-money-receipt{background:var(--nt-paper);border:1px solid #c6bdad;border-top:5px solid #282521;max-width:390px;margin:24px auto;padding:20px 25px;font:13px/1.6 DM Mono,monospace;box-shadow:3px 3px #d8d0c3}.nt-money-receipt>div{justify-content:space-between;gap:15px;padding:10px 0;display:flex}.nt-money-receipt>div:nth-child(3),.nt-money-receipt>div:last-child{border-top:1px dashed #8d8171}.nt-money-receipt>div:last-child{background:#df05;margin:0 -8px;padding-inline:8px}.nt-exchange{justify-content:center;align-items:center;gap:25px;margin:25px 0;display:flex}.nt-exchange>div{flex-direction:column;align-items:center;gap:10px;font-size:14px;display:flex}.nt-exchange>div:first-child,.nt-exchange>div:last-child{background:#91dfff66;border:1px solid #282521;border-radius:5px;min-width:90px;padding:20px}.nt-exchange>div:last-child{background:#ff7fa855}.nt-exchange b{font-size:20px}.nt-surd-tiles{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:6px;margin:24px 0;padding:20px}.nt-surd-tiles svg{max-height:190px}.nt-lab>svg{width:100%;height:auto;margin:20px 0;display:block}.nt-chapter-picker{margin:20px 0 14px;display:block}.nt-chapter-picker select{min-height:44px;margin:8px 0 0;padding-left:8px;font-size:12px}.nt-graph{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:7px;min-width:0;margin:24px 0;padding:14px}.nt-graph svg{width:100%;height:auto;font-family:Space Grotesk,Arial,sans-serif;display:block;overflow:hidden}.nt-graph figcaption{color:var(--nt-muted);margin-top:12px;font-size:12px;line-height:1.6}.nt-area-grid{border:1px solid #282521;border-radius:6px;grid-template-columns:repeat(3,minmax(0,1fr));margin:24px 0;display:grid;overflow:hidden}.nt-area-grid>*{text-align:center;background:#91dfff55;border-bottom:1px solid #b8b2a8;border-right:1px solid #b8b2a8;padding:16px;font-size:17px}.nt-area-grid>b{background:#ff7fa866}.nt-sequence-cards{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin:20px 0;display:grid}.nt-sequence-cards>div{text-align:center;background:#df05;border:1px solid #b9b09f;border-radius:5px;padding:13px 5px}.nt-sequence-cards span{color:var(--nt-muted);font-size:11px;display:block}.nt-sequence-cards b{margin-top:9px;font-size:22px;display:block}.nt-mapping{gap:10px;max-width:390px;margin:24px auto;display:grid}.nt-mapping>div{justify-content:space-between;align-items:center;gap:15px;display:flex}.nt-mapping b{background:#91dfff;border:1px solid #282521;border-radius:50%;place-items:center;min-width:52px;min-height:45px;display:grid}.nt-mapping b:last-child{background:#df0}.nt-mapping span{font-size:12px}.nt-root-group{border-top:1px solid;padding:0 .2em;display:inline-block}.nt-hero-art>strong{overflow-wrap:anywhere}@media (width<=800px){.nt-chapter-picker{margin:0 0 14px}.nt-chapter-picker>.nt-label{font-size:9px}.nt-sidebar{padding-top:18px}.nt-chapter-picker select{font-size:13px}}@media (width<=560px){.nt-graph{padding:8px}.nt-graph figcaption{font-size:11px}.nt-sequence-cards{gap:5px}.nt-sequence-cards span{font-size:9px}.nt-sequence-cards b{font-size:18px}.nt-area-grid>*{padding:12px 5px;font-size:15px}.nt-breadcrumb{letter-spacing:.3px;flex-wrap:wrap;gap:8px;font-size:9px}}@media print{.nt-graph,.nt-area-grid,.nt-mapping,.nt-sequence-cards{break-inside:avoid}}@media (width<=560px){.nt-rate-formulas,.nt-journey{flex-direction:column}.nt-journey>div{justify-content:space-between;align-items:center;gap:10px;display:flex}.nt-journey span{text-align:right;margin:0}.nt-exchange{gap:12px}.nt-exchange>div:first-child,.nt-exchange>div:last-child{min-width:75px;padding:16px 12px}.nt-exchange>div{font-size:12px}.nt-calculator-screen{padding:18px;font-size:27px}}@media print{.nt-rate-formulas,.nt-journey,.nt-clock,.nt-money-receipt,.nt-exchange,.nt-surd-tiles{break-inside:avoid}}@media (width>=1600px){.nt-shell{gap:65px}.nt-hero h1{font-size:76px}}@media (width<=1100px){.nt-shell{grid-template-columns:218px minmax(0,1fr);gap:28px;padding:0 25px}.nt-sidebar{padding-right:18px}.nt-hero{grid-template-columns:1fr 190px;gap:20px}.nt-hero-art{min-height:220px}.nt-hero-art>b{font-size:22px}.nt-hero-art>strong{font-size:19px}.nt-venn-layout{grid-template-columns:1fr}.nt-learning{align-items:start}.nt-reciprocals{gap:7px}.nt-reciprocals>div{padding:13px}}@media (width<=800px){.nt-shell{max-width:740px;padding:0 24px;display:block}.nt-sidebar{border:0;border-bottom:1px solid #cec3b2;height:auto;padding:25px 0 18px;position:static}.nt-sidebar>.nt-label,.nt-course,.nt-chapter-label,.nt-sidebar>h2,.nt-on-page,.nt-sidebar-tip{display:none}.nt-topic-nav{grid-template-columns:1fr 1fr;gap:12px}.nt-topic-nav button{border-color:#c6bdad;font-size:13px}.nt-main{padding-top:24px}.nt-hero{grid-template-columns:1fr 210px}.nt-hero h1{font-size:53px}.nt-header{height:66px}.nt-section{scroll-margin-top:88px}.nt-hero-art{min-height:225px}}@media (width<=560px){.notes-page{font-size:15px}.nt-header{gap:8px;padding:0 16px}.nt-header .math-talk-name{font-size:20px}.nt-header .math-talk-logo{width:27px;height:27px}.nt-header :is(button,a) span{display:none}.nt-header :is(button,a){justify-content:center;min-width:40px}.nt-shell{padding:0 18px}.nt-sidebar{padding-top:19px}.nt-topic-nav button{gap:7px;padding:10px 8px;font-size:11px}.nt-topic-nav button span{font-size:10px}.nt-hero{grid-template-columns:1fr;gap:28px;padding-top:27px}.nt-hero h1{letter-spacing:-2.5px;font-size:55px}.nt-hero-art{min-height:175px;margin:0 8px 7px}.nt-hero-art>b{font-size:27px}.nt-hero-art>strong{font-size:22px}.nt-hero p{font-size:15px}.nt-hero-meta{gap:8px 12px;font-size:8px}.nt-learning{flex-direction:column;gap:8px;padding:15px 0}.nt-learning p{font-size:11px}.nt-section{padding-top:35px}.nt-section-heading{gap:10px;margin-bottom:18px}.nt-section-heading h2{font-size:25px}.nt-lead{font-size:16px}.nt-two-col{grid-template-columns:1fr;gap:17px}.nt-family{padding:14px}.nt-family-label{flex-direction:column;gap:6px}.nt-family-grid{grid-template-columns:1fr}.nt-irrational{padding:16px}.nt-irrational strong{margin:12px 0 0}.nt-lab{padding:16px}.nt-number-options{gap:6px}.nt-number-options button{min-width:48px}.nt-number-result{grid-template-columns:52px minmax(0,1fr);align-items:start;gap:13px}.nt-number-result>strong{font-size:32px}.nt-number-result p{font-size:13px}.nt-callout{padding:14px 16px;font-size:13px}.nt-panel,.nt-example{padding:19px}.nt-factor-overlap{grid-template-columns:.7fr 1.7fr .7fr}.nt-factor-overlap>div{padding:13px 5px}.nt-factor-overlap strong{font-size:17px}.nt-factor-overlap span{font-size:8px}.nt-reciprocals{grid-template-columns:1fr}.nt-reciprocals>div{justify-content:space-between;align-items:center;gap:12px;display:flex}.nt-reciprocals small{max-width:140px;margin:0}.nt-reciprocals span{font-size:20px}.nt-place-value strong{font-size:23px}.nt-place-value span{font-size:9px}.nt-notation>div{grid-template-columns:75px minmax(0,1fr);gap:12px;padding:16px 12px}.nt-notation>div>strong{font-size:20px}.nt-builders>div{grid-template-columns:1fr;gap:8px}.nt-builders>div>strong{text-align:left}.nt-operation-options button{min-width:75px}.nt-venn-layout{gap:18px}.nt-footer{padding-bottom:45px}.nt-footer>p{font-size:21px}.nt-practice>div{grid-template-columns:29px minmax(0,1fr);gap:10px}}@media print{.notes-page{background:#fff;font-size:11pt;overflow:visible}.nt-header,.nt-sidebar,.nt-breadcrumb,.nt-hero-art,.nt-footer :is(button,a),.math-tutor-widget,.math-chat-toggle{display:none!important}.nt-shell{max-width:none;padding:0;display:block}.nt-main{max-width:none;padding:0}.nt-hero{padding:0 0 20px;display:block}.nt-hero h1{font-size:34pt}.nt-section{padding-top:24px;scroll-margin-top:0}.nt-section-heading h2{font-size:21pt}.nt-example,.nt-panel,.nt-lab,.nt-callout,.nt-family,.nt-practice>div,.nt-notation>div{break-inside:avoid;box-shadow:none}.nt-section-heading{break-after:avoid}.nt-practice details:not([open]){display:none}.nt-family,.nt-panel,.nt-example,.nt-lab{background:#fff}.nt-hero-meta{font-size:8pt}.nt-learning{margin-bottom:12px}body{height:auto!important;overflow:visible!important}}@media (width<=800px){.nt-sidebar .nt-topic-nav{display:none}.nt-mobile-topic{display:block}.nt-mobile-topic>span{letter-spacing:1px;font:700 10px DM Mono,monospace}.nt-mobile-topic select{margin:10px 0 0}.nt-hero h1{font-size:46px}.nt-hero-art>strong{font-size:20px}.nt-operation-ladder>div{grid-template-columns:30px 120px minmax(0,1fr)}}@media (width<=560px){.nt-hero h1{letter-spacing:-1.8px;font-size:43px;line-height:1.1}.nt-recall-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.nt-recall-grid>div{padding:9px 7px;font-size:13px}.nt-recall-grid b{font-size:17px}.nt-operation-ladder>div{grid-template-columns:28px minmax(0,1fr);gap:7px 12px}.nt-operation-ladder span{grid-column:2}.nt-power-pattern{grid-template-columns:repeat(4,minmax(0,1fr))}.nt-power-pattern>div{border-bottom:1px solid #b8b4aa}.nt-recurring-examples{padding:18px;font-size:17px}.nt-table td,.nt-table th{padding:11px 13px}.nt-footer-nav{flex-direction:column}.nt-footer :is(button,a){justify-content:space-between;gap:12px;font-size:12px}.nt-lab .nt-label{letter-spacing:.8px;font-size:9px}}@media print{.math-chat-widget,.nt-mobile-topic{display:none!important}.nt-table-wrap{overflow:visible}.nt-table{min-width:0}.nt-recall-grid,.nt-line-figure,.nt-power-pattern{break-inside:avoid}.nt-lab input[type=range],.nt-lab select,.nt-lab-heading button{display:none}.nt-hundred i.filled,.nt-ratio-bar>div{-webkit-print-color-adjust:exact;print-color-adjust:exact}}.nt-sidebar>h2{margin-top:16px;font-size:26px;line-height:1.15}.nt-coordinate-plane{max-width:580px;margin-inline:auto}.nt-graph-key{flex-wrap:wrap;justify-content:center;gap:10px 20px;margin-top:14px;font-size:12px;display:flex}.nt-graph-key>span{align-items:center;gap:7px;display:inline-flex}.nt-graph-key i{flex-shrink:0;width:22px;height:3px;display:block}.nt-coordinate-plane svg{aspect-ratio:1;max-height:none}.nt-sector-results{background:#edf2df;border:1px solid #b8c393;border-radius:5px;padding:16px 18px;font-size:15px;line-height:2}.nt-sector-results p{line-height:2}.nt-net-gallery .nt-geometry-diagram svg{max-height:260px}.nt-geometry-diagram{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:7px;min-width:0;max-width:490px;margin:24px auto;padding:16px}.nt-geometry-diagram svg{width:100%;height:auto;max-height:370px;display:block;overflow:visible}.nt-geometry-diagram figcaption{color:var(--nt-muted);margin-top:16px;font-size:12px;line-height:1.6}.nt-shape-gallery,.nt-solid-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin:24px 0;display:grid}.nt-shape-gallery article,.nt-solid-gallery article{background:var(--nt-paper);border:1px solid #c6bdad;border-radius:6px;min-width:0;padding:20px}.nt-shape-gallery svg{width:100%;height:120px;margin:0 auto 16px;display:block}.nt-shape-gallery h3,.nt-solid-gallery h3{font-size:17px}.nt-shape-gallery p,.nt-solid-gallery p{font-size:13px;line-height:1.7}.nt-solid-gallery{grid-template-columns:repeat(3,minmax(0,1fr))}.nt-solid-gallery article{padding:16px}.nt-solid-gallery svg{width:100%;height:120px;margin:0 auto 16px;display:block}.nt-net-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0;display:grid}.nt-net-gallery article{min-width:0}.nt-net-gallery h3{font-size:17px}.nt-net-gallery .nt-geometry-diagram{margin:12px 0}.nt-notation .nt-term-word{text-align:left;font:700 14px/1.45 Space Grotesk,Arial,sans-serif}.nt-notation:has(.nt-term-word)>div{grid-template-columns:145px minmax(0,1fr)}.nt-similarity-factors{grid-template-columns:repeat(3,minmax(0,1fr))}@media (width<=1050px){.nt-solid-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=560px){.nt-shape-gallery,.nt-solid-gallery,.nt-net-gallery{grid-template-columns:1fr}.nt-shape-gallery svg,.nt-solid-gallery svg{max-width:210px;height:125px}.nt-geometry-diagram{margin-block:20px;padding:10px}.nt-geometry-diagram figcaption{font-size:11px}.nt-notation:has(.nt-term-word)>div{grid-template-columns:1fr;gap:8px}.nt-notation .nt-term-word{font-size:15px}.nt-net-gallery{gap:20px}}@media print{.nt-geometry-diagram,.nt-shape-gallery article,.nt-solid-gallery article{break-inside:avoid}.nt-shape-gallery,.nt-solid-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}.nt-trig-ratios{background:#edf2df;border:1px solid #b8c393;border-radius:5px;padding:16px 18px;font-size:15px;line-height:2}.nt-trig-ratios p{line-height:2}body:has(.notes-page){overflow:visible}#root:has(.notes-page){overflow:visible}.nt-contents-intro h1:focus,.nt-hero h1:focus{outline:none}.nt-lesson-sidebar{padding-top:20px;padding-bottom:20px}.nt-lesson-sidebar .nt-back-contents{margin-bottom:15px;padding-bottom:10px}.nt-lesson-sidebar .nt-lesson-context>a{margin-bottom:12px}.nt-lesson-sidebar .nt-lesson-context h2{margin-bottom:15px}.nt-lesson-sidebar .nt-section-menu>summary,.nt-lesson-sidebar .nt-change-lesson>summary{padding-block:12px}.notes-page a:focus-visible,.notes-page input:focus-visible,.notes-page select:focus-visible{outline-offset:3px;outline:3px solid #285bc4}.nt-skip-link{z-index:100;color:#fffaf2;background:#282521;border-radius:4px;padding:12px 18px;position:fixed;top:-100px;left:20px}.nt-skip-link:focus{top:12px}.nt-header-contents{min-height:44px;color:inherit;align-items:center;gap:9px;font-size:12px;font-weight:700;text-decoration:none;display:flex}.nt-header-context{color:#665f55;align-items:center;gap:8px;font-size:12px;display:flex}.nt-contents-layout{grid-template-columns:225px minmax(0,1fr);gap:48px;max-width:1320px;margin:auto;padding:38px 40px 60px;display:grid}.nt-contents-chapters{align-self:start;max-height:calc(100svh - 132px);padding-right:8px;position:sticky;top:108px;overflow:auto}.nt-contents-chapters>nav{gap:4px;margin-top:18px;display:grid}.nt-contents-chapters a{color:inherit;border:1px solid #0000;border-radius:5px;justify-content:space-between;align-items:center;gap:12px;min-height:46px;padding:11px 12px;font-size:13px;line-height:1.5;text-decoration:none;display:flex}.nt-contents-chapters a>span{align-items:flex-start;gap:10px;display:flex}.nt-contents-chapters a b{color:#71695d;min-width:18px;font:11px/1.8 DM Mono,monospace}.nt-contents-chapters a small{flex-shrink:0;font:11px DM Mono,monospace}.nt-contents-chapters a:hover{background:#eae3d7}.nt-contents-chapters a[aria-current=page]{color:#fffaf2;background:#282521;border-color:#282521;font-weight:700}.nt-contents-chapters a[aria-current=page] b{color:#df0}.nt-contents-chapters>p{color:#665f55;border-top:1px solid #d8d0c3;margin-top:24px;padding:20px 12px;font-size:12px;line-height:1.8}.nt-contents-main{min-width:0;scroll-margin-top:100px}.nt-contents-intro{justify-content:space-between;align-items:center;gap:25px;padding:20px 0 32px;display:flex}.nt-contents-intro h1{letter-spacing:-2px;margin:17px 0;font-size:clamp(36px,4.3vw,56px);line-height:1.1}.nt-contents-intro mark{color:inherit;background:#df0;padding:0 .08em}.nt-contents-intro p{color:#665f55;max-width:52ch;font-size:16px;line-height:1.8}.nt-contents-count{text-align:center;background:#91dfff66;border:1px solid #282521;border-radius:3px;flex-shrink:0;padding:22px 18px;transform:rotate(3deg);box-shadow:4px 4px #282521}.nt-contents-count>b{font-size:48px;line-height:1.2;display:block}.nt-contents-count>span{margin-top:6px;font-size:12px;line-height:1.5;display:block}.nt-contents-tools{border-top:1px solid #c6bdad;margin:3px 0 27px;padding:24px 0 0}.nt-search-label{margin-bottom:9px;font-size:13px;font-weight:700;display:block}.nt-contents-search{background:#fffaf2;border:1px solid #a59a88;border-radius:6px;align-items:center;gap:12px;min-height:54px;padding:0 15px;display:flex}.nt-contents-search:focus-within{border-color:#285bc4;box-shadow:0 0 0 2px #285bc422}.nt-contents-search>svg{color:#665f55;flex-shrink:0}.nt-contents-search input{color:#282521;background:0 0;border:0;width:100%;min-width:0;min-height:52px;font:15px Space Grotesk,Arial,sans-serif}.nt-contents-search input:focus-visible{outline:none}.nt-contents-search input::-webkit-search-cancel-button{display:none}.nt-contents-search button{background:0 0;border:0;border-radius:4px;flex-shrink:0;place-items:center;width:40px;height:40px;display:grid}.nt-contents-search button:hover{background:#eae3d7}.nt-contents-results{color:#665f55;min-height:20px;font-size:12px;margin:13px 0 0!important}.nt-contents-mobile-filter{display:none}.nt-contents-groups{gap:26px;display:grid}.nt-contents-group{background:#fffaf2;border:1px solid #bdb3a3;border-radius:8px;overflow:hidden}.nt-contents-group>header{background:#efe8dc;border-bottom:1px solid #d8d0c3;align-items:center;gap:15px;padding:22px 24px;display:flex}.nt-chapter-number{background:#91dfff;border:1px solid #282521;border-radius:5px;flex-shrink:0;place-items:center;width:46px;height:46px;font:700 17px DM Mono,monospace;display:grid}.nt-contents-group:nth-child(3n+2) .nt-chapter-number{background:#ffb3ca}.nt-contents-group:nth-child(3n) .nt-chapter-number{background:#df0}.nt-contents-group h2{margin-top:3px;font-size:24px;line-height:1.3}.nt-contents-group>header>.nt-label{font-size:9px}.nt-contents-group>header>small{color:#665f55;white-space:nowrap;margin-left:auto;font-size:11px}.nt-contents-group>ul{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:18px;margin:0;padding:6px 14px;list-style:none;display:grid}.nt-contents-group li{min-width:0}.nt-contents-topic{min-height:88px;color:inherit;border-bottom:1px solid #e4dbce;border-radius:3px;grid-template-columns:36px minmax(0,1fr) 18px;align-items:center;gap:10px;padding:17px 9px;text-decoration:none;display:grid}.nt-contents-topic:hover{background:#eff2e2}.nt-contents-topic-id{color:#665f55;align-self:start;padding-top:2px;font:12px DM Mono,monospace}.nt-contents-topic strong{font-size:14px;font-weight:600;line-height:1.5;display:block}.nt-contents-topic small{color:#665f55;margin-top:5px;font-size:10px;line-height:1.7;display:block}.nt-contents-topic>svg{color:#665f55}.nt-contents-footer{color:#665f55;align-items:flex-start;gap:12px;padding:28px 0;font-size:13px;display:flex}.nt-contents-footer>svg{flex-shrink:0;margin-top:3px}.nt-contents-empty{background:#fffaf2;border:1px dashed #a59a88;border-radius:7px;padding:32px 24px}.nt-contents-empty h2{margin-bottom:12px;font-size:24px}.nt-contents-empty p{color:#665f55;font-size:14px}.nt-contents-empty button,.nt-contents-empty a{min-height:44px;color:inherit;background:#df0;border:1px solid #282521;border-radius:4px;align-items:center;gap:9px;margin:20px 12px 0 0;padding:9px 14px;font-size:13px;text-decoration:none;display:inline-flex}.nt-contents-empty a{background:#fffaf2}.nt-back-contents{color:#282521;border-bottom:1px solid #c6bdad;align-items:center;gap:9px;min-height:44px;margin-bottom:24px;padding-bottom:14px;font-size:14px;font-weight:700;text-decoration:none;display:flex}.nt-lesson-context>a{color:#665f55;margin-bottom:19px;font-size:12px;line-height:1.7;text-decoration:none;display:block}.nt-lesson-context>a:hover{text-decoration:underline}.nt-lesson-context h2{overflow-wrap:anywhere;margin:7px 0 23px;font-size:19px;line-height:1.45}.nt-lesson-context h2>span{color:#665f55;margin-bottom:5px;font:12px DM Mono,monospace;display:block}.nt-section-menu,.nt-change-lesson{border-top:1px solid #d8d0c3}.nt-section-menu>summary,.nt-change-lesson>summary{cursor:pointer;justify-content:space-between;align-items:center;gap:12px;min-height:54px;padding:17px 0;font-size:14px;font-weight:700;list-style:none;display:flex}.nt-section-menu>summary::-webkit-details-marker{display:none}.nt-change-lesson>summary::-webkit-details-marker{display:none}.nt-section-menu>summary small,.nt-change-lesson>summary small{color:#665f55;margin-top:2px;font-size:11px;font-weight:400;display:block}.nt-section-menu[open]>summary>svg,.nt-change-lesson[open]>summary>svg{transform:rotate(180deg)}.nt-section-menu nav{gap:4px;margin-bottom:17px;display:grid}.nt-section-menu nav a{text-align:left;background:0 0;border:1px solid #0000;border-radius:4px;grid-template-columns:23px minmax(0,1fr) 6px;align-items:start;gap:8px;width:100%;min-height:44px;padding:11px 9px;line-height:1.5;display:grid}.nt-section-menu nav a>span:first-child{color:#776d60;font:11px/1.9 DM Mono,monospace}.nt-section-menu nav a>b{font-size:13px;font-weight:400}.nt-section-menu nav a:hover,.nt-change-lesson nav a:hover{background:#eae3d7}.nt-section-menu nav a[aria-current=location]{background:#e7edce;border-color:#aebc80}.nt-section-menu nav a[aria-current=location]>b{font-weight:700}.nt-section-position{background:#426c26;border-radius:50%;width:6px;height:6px;margin-top:8px}.nt-change-lesson nav{scrollbar-gutter:stable;gap:3px;max-height:300px;margin-bottom:16px;display:grid;overflow:auto}.nt-change-lesson nav a{color:inherit;border-radius:4px;grid-template-columns:32px minmax(0,1fr);gap:8px;min-height:44px;padding:11px 8px;line-height:1.5;text-decoration:none;display:grid}.nt-change-lesson nav a>span{color:#665f55;font:11px/1.9 DM Mono,monospace}.nt-change-lesson nav a>b{font-size:12px;font-weight:400}.nt-change-lesson nav a[aria-current=page]{color:#fffaf2;background:#282521}.nt-change-lesson nav a[aria-current=page]>span{color:#df0}.nt-change-lesson nav a[aria-current=page]>b{font-weight:700}.nt-breadcrumb a{color:inherit;align-items:center;min-height:35px;text-decoration:none;display:inline-flex}.nt-breadcrumb a:hover{text-decoration:underline}@media (width<=1050px){.nt-contents-layout{grid-template-columns:195px minmax(0,1fr);gap:26px;padding-inline:25px}.nt-contents-group>ul{grid-template-columns:1fr}.nt-contents-count{display:none}}@media (width<=800px){.nt-contents-layout{max-width:740px;padding:20px 24px 40px;display:block}.nt-contents-chapters{display:none}.nt-contents-mobile-filter{margin-top:17px;font-size:12px;font-weight:700;display:block}.nt-contents-mobile-filter select{min-height:46px;margin-top:7px;font-weight:400}.nt-contents-intro{padding:18px 0 22px}.nt-contents-intro h1{font-size:45px}.nt-contents-group>ul{grid-template-columns:repeat(2,minmax(0,1fr))}.nt-lesson-sidebar{border-bottom:1px solid #c6bdad;padding:0;display:block}.nt-lesson-sidebar .nt-back-contents,.nt-lesson-sidebar .nt-lesson-context{display:none}.nt-section-menu,.nt-change-lesson{border-top:0;margin:0}.nt-change-lesson{border-top:1px solid #d8d0c3}.nt-section-menu>summary,.nt-change-lesson>summary{padding:12px 0}.nt-section-menu>summary>span,.nt-change-lesson>summary>span{align-items:center;gap:12px;display:flex}.nt-section-menu>summary small,.nt-change-lesson>summary small{margin-top:0}.nt-section-menu nav a>b,.nt-change-lesson nav a>b{font-size:14px}.nt-header-contents span{display:inline!important}.nt-contents-main{scroll-margin-top:85px}}@media (width<=560px){.nt-contents-layout{padding:15px 18px 30px}.nt-contents-intro h1{letter-spacing:-1.5px;font-size:39px}.nt-contents-intro .nt-label{letter-spacing:.6px;font-size:9px}.nt-contents-intro p{font-size:15px}.nt-contents-group>header{gap:11px;padding:18px 15px}.nt-contents-group h2{font-size:21px}.nt-contents-group>header>small{display:none}.nt-contents-group>ul{grid-template-columns:1fr;padding-inline:9px}.nt-contents-topic{min-height:80px;padding:15px 8px}.nt-contents-topic strong{font-size:15px}.nt-contents-topic small{font-size:11px}.nt-contents-search{gap:9px;padding-inline:12px}.nt-contents-search input{font-size:14px}.nt-header-context{font-size:11px}.nt-header-context>svg{display:none}.nt-contents-page .nt-header .math-talk-name{font-size:19px}.nt-contents-page .nt-header>button{min-width:40px}.nt-header-contents{font-size:12px}.nt-section-menu>summary small,.nt-change-lesson>summary small{font-size:10px}.nt-contents-intro br{display:none}}@media print{.nt-lesson-sidebar,.nt-skip-link{display:none!important}.nt-contents-layout{padding:0;display:block}.nt-contents-chapters,.nt-contents-tools,.nt-contents-count,.nt-contents-footer{display:none}.nt-contents-group{break-inside:avoid}.nt-contents-group>ul{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=800px){.nt-lesson-sidebar{z-index:15;background:#f6f0e5;max-height:calc(100svh - 80px);position:sticky;top:66px;overflow:auto}.nt-section{scroll-margin-top:195px}}.nt-teaching-foundation{border-left:3px solid #b4c94b;max-width:75ch;margin:0 0 25px;padding:1px 0 1px 20px}.nt-teaching-foundation p{font-size:16px;line-height:1.9}.nt-teaching-foundation p+p{margin-top:16px}.nt-teaching-check{background:#edf2df;border:1px solid #b6c296;border-radius:6px;margin:28px 0 4px}.nt-teaching-prompt{cursor:pointer;grid-template-columns:minmax(0,1fr) 20px;align-items:center;gap:9px 15px;padding:19px 21px;list-style:none;display:grid}.nt-teaching-prompt::-webkit-details-marker{display:none}.nt-teaching-prompt>span{letter-spacing:1px;text-transform:uppercase;color:#52613e;grid-column:1/-1;font:700 10px/1.4 DM Mono,monospace}.nt-teaching-prompt>b{font-size:16px;font-weight:600;line-height:1.65}.nt-teaching-prompt>svg{transition:none}.nt-teaching-check[open] .nt-teaching-prompt>svg{transform:rotate(180deg)}.nt-teaching-check>div{padding:0 21px 21px;font-size:15px;line-height:1.85}.nt-teaching-check>div>p{border-top:1px solid #c8d0b5;padding-top:16px}@media (width<=560px){.nt-teaching-foundation{margin-bottom:22px;padding-left:15px}.nt-teaching-foundation p{font-size:15px;line-height:1.85}.nt-teaching-prompt{gap:7px 10px;padding:16px}.nt-teaching-prompt>b{font-size:15px}.nt-teaching-check>div{padding:0 16px 17px;font-size:14px}}@media print{.nt-teaching-foundation{max-width:none}.nt-teaching-foundation p{font-size:11pt;line-height:1.65}.nt-teaching-check{break-inside:avoid;background:#fff}.nt-teaching-check:not([open]){display:none}.nt-teaching-check>div{font-size:10pt}}.nt-stat-plot{background:#fffaf2;border:1px solid #c6bdad;border-radius:7px;min-width:0;max-width:650px;margin:24px auto;padding:12px}.nt-stat-plot svg{width:100%;height:auto;display:block;overflow:visible}.nt-stat-plot svg text{fill:#282521;font:14px Space Grotesk,Arial,sans-serif}.nt-stat-plot figcaption{color:var(--nt-muted);margin:14px 4px 4px;font-size:12px;line-height:1.6}.nt-tally{width:90px;height:30px;display:block}.nt-stat-summary{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0;display:grid}.nt-stat-summary>div{background:#edf2df;border:1px solid #b8c393;border-radius:5px;flex-direction:column;align-items:center;gap:8px;padding:15px 8px;display:flex}.nt-stat-summary span{font-size:12px}.nt-stat-summary b{font-size:27px}.nt-pictogram{background:#fffaf2;border:1px solid #c6bdad;border-radius:7px;margin:24px 0;padding:20px}.nt-pictogram>p{margin-bottom:18px;font-size:13px}.nt-pictogram>div{border-top:1px solid #dfd6c8;grid-template-columns:65px minmax(0,1fr) 25px;align-items:center;gap:10px;padding:12px 0;display:grid}.nt-pictogram>div>b{font-size:13px}.nt-pictogram>div>span{letter-spacing:4px;color:#285b88;font-size:24px}.nt-stat-checkbox{align-items:center;gap:10px;margin:18px 0;font-size:13px;display:flex}.nt-stat-checkbox input{accent-color:#a43058;flex-shrink:0;width:18px;height:18px}@media (width<=560px){.nt-stat-plot{margin-block:20px;padding:7px}.nt-stat-plot svg text{font-size:20px}.nt-stat-plot figcaption{font-size:11px}.nt-stat-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.nt-pictogram{padding:14px}.nt-pictogram>div>span{letter-spacing:1px;font-size:20px}.nt-pictogram>div{grid-template-columns:58px minmax(0,1fr) 20px}}@media print{.nt-stat-plot,.nt-pictogram,.nt-stat-summary{break-inside:avoid}.nt-stat-checkbox{display:none}}.nt-probability-actions{flex-wrap:wrap;gap:10px;margin:20px 0;display:flex}.nt-probability-actions button{background:#df0;border:1px solid #282521;border-radius:4px;min-height:44px;padding:10px 13px;font-size:12px}.nt-probability-actions button:last-child{background:#fffaf2}.nt-frequency-bars{gap:12px;margin:20px 0;display:grid}.nt-frequency-bars>div{grid-template-columns:20px minmax(0,1fr) 100px;align-items:center;gap:10px;display:grid}.nt-frequency-bars>div>span{background:#e6dfd3;border-radius:3px;height:22px;overflow:hidden}.nt-frequency-bars i{background:#a43058;height:100%;display:block}.nt-frequency-bars small{text-align:right;font:12px DM Mono,monospace}.notes-page .nt-sample-space{min-width:460px;font-size:13px}.notes-page .nt-sample-space td,.notes-page .nt-sample-space th{text-align:center;padding:10px 8px}.notes-page .nt-sample-space td.selected{background:#df0;font-weight:700}.nt-probability-tree{max-width:100%;margin:20px 0;overflow-x:auto}.nt-probability-tree .nt-geometry-diagram{min-width:560px;max-width:680px;margin:0 auto}.nt-probability-tree .nt-geometry-diagram svg{max-height:none}.nt-probability-tree:focus-visible{outline:3px solid #285bc4}@media (width<=560px){.nt-frequency-bars>div{grid-template-columns:18px minmax(0,1fr) 85px;gap:7px}.nt-frequency-bars small{font-size:11px}}@media print{.nt-probability-actions{display:none}.nt-probability-tree{overflow:visible}.nt-probability-tree .nt-geometry-diagram{min-width:0;max-width:100%}.notes-page .nt-sample-space{min-width:0}}.notes-page .nt-column-vector{vertical-align:middle;white-space:nowrap;align-items:center;gap:3px;margin:0 4px;font-style:normal;line-height:1.2;display:inline-flex}.notes-page .nt-column-vector:before,.notes-page .nt-column-vector:after{font-family:Georgia,serif;font-size:2.7em;font-weight:400;line-height:1}.notes-page .nt-column-vector:before{content:"("}.notes-page .nt-column-vector:after{content:")"}.notes-page .nt-column-vector>span{flex-direction:column;align-items:center;gap:5px;padding:3px 0;display:flex}.notes-page .nt-column-vector>span>span{border:0;padding:0;line-height:1.15;display:block}.nt-vector-letter{font-style:italic}.nt-directed-vector{white-space:nowrap;padding-top:.35em;line-height:1.35;display:inline-block;position:relative}.nt-directed-vector:before{content:"⟶";text-align:center;font-size:1.05em;font-weight:400;position:absolute;top:-.55em;left:0;right:0}.nt-transform-result{background:#edf2df;border:1px solid #b8c393;border-radius:5px;margin:18px 0;padding:16px 18px;line-height:1.8}.nt-transform-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.nt-transform-controls label{min-width:0}.nt-transform-controls select{width:100%}@media (width<=560px){.nt-transform-controls{grid-template-columns:1fr}.nt-transform-result{padding:12px;font-size:14px}}.nt-footer-nav a,.nt-section-menu nav a,.nt-header a{color:inherit;text-decoration:none}:root{--ink:#151515;--paper:#f1f2ef;--paper-bright:#f8f8f4;--coral:#e34b43;--coral-soft:#f8dfdb;--saffron:#f2bd52;--saffron-soft:#fff1c9;--sky:#8fc4dc;--sky-soft:#e5f3f8;--mint:#79bea0;--mint-soft:#e4f3eb;--lavender:#aaa1e5;--lavender-soft:#eeebff}.red-button{background:var(--coral)}.wordmark>span:last-child,.wordmark-mark,.section-kicker{color:var(--coral)}.wordmark-mark{background:var(--coral)}.hero h1 em,.section h2 em{color:var(--coral)}.hero-proof .mini-avatars span:first-child{background:var(--coral)}.hero-proof .mini-avatars span:nth-child(2){background:var(--sky);color:var(--ink)}.hero-proof .mini-avatars span:nth-child(3){background:var(--saffron);color:var(--ink)}.visual-tag b{color:var(--sky)}.verified{background:var(--mint);color:var(--ink)}.visual-stamp{color:var(--saffron)}.focus-art .sun{background:var(--saffron);color:var(--ink);box-shadow:0 0 0 14px #f2bd522e}.streak-icon,.week .done{background:var(--mint);color:var(--ink)}.week .today{background:var(--coral)}.lavender{background:var(--lavender-soft)}.mint-card{background:var(--mint-soft)}.peach-card{background:var(--saffron-soft)}.blue-card{background:var(--sky-soft)}.mint-card .stat-icon,.trend{color:#378c6e!important}.peach-card .stat-icon{color:#b17a22!important}.blue-card .stat-icon{color:#4786a4!important}.answer-grid button:hover,.answer-grid .correct{border-color:var(--mint);background:var(--mint);color:var(--ink)}.your-rank{background:var(--sky);color:var(--ink)}.your-rank .rank,.your-rank .points,.your-rank .points small{color:var(--ink)}.countdown-hero h1 em,.countdown-section-heading h2 em{color:var(--coral)}.countdown-hero-note{background:var(--saffron);color:var(--ink);box-shadow:6px 6px 0 var(--sky)}.countdown-hero-note i{color:var(--ink)}.countdown-card.dark{background:var(--sky);color:var(--ink);box-shadow:6px 6px 0 var(--saffron)}.countdown-card.dark .series-kicker,.countdown-card.dark .series-window,.countdown-card.dark .countdown-date span,.countdown-card.dark .countdown-date small,.countdown-card.dark .countdown-values span,.countdown-card.dark>p{color:#315f70}.countdown-card.dark .countdown-date{border-color:#6ba7bf}.countdown-card.dark .countdown-values strong{color:var(--ink)}.countdown-card.dark .countdown-values>b{color:var(--coral)}.countdown-card.dark .series-tags span{border-color:#5d9ab2}.countdown-guide{background:var(--mint)}.countdown-guide h2 em{color:var(--ink)}.countdown-values>b{color:var(--coral)}.quiz-hero-note{background:var(--sky);color:var(--ink);box-shadow:6px 6px 0 var(--saffron)}.quiz-hero-note span,.quiz-hero-note i{color:#315f70}.quiz-timer{background:var(--saffron);color:var(--ink);border-color:var(--ink)}.quiz-timer span{color:#6d5010}.quiz-timer.urgent{background:var(--coral);border-color:var(--coral)}.quiz-timer.urgent span{color:var(--ink)}.question-steps button.answered{border-color:var(--sky)}.question-steps button.active{box-shadow:3px 3px 0 var(--saffron)}.quiz-choice:hover{border-color:var(--sky)}.quiz-choice.correct{border-color:var(--mint);background:var(--mint-soft);color:#245b45}.quiz-result{background:var(--mint)}.quiz-result .section-kicker{color:var(--ink)}.auth-card{box-shadow:7px 7px 0 var(--saffron)}.auth-copy h1 em,.auth-state h1 em{color:var(--sky)}.auth-fields input:focus,.auth-fields select:focus,.avatar-field input:focus{border-color:var(--sky)}.auth-message{border-left-color:var(--saffron);background:var(--saffron-soft);color:#694d12}.profile-avatar-preview{background:var(--lavender);color:var(--ink)}.pastpapers-hero h1 em,.pastpapers-section-heading h2 em{color:var(--coral)}.pastpapers-hero-note{background:var(--sky);color:var(--ink);box-shadow:6px 6px 0 var(--saffron)}.pastpapers-hero-note span,.pastpapers-hero-note i{color:#315f70}.pastpapers-tools label,.paper-search-count,.paper-folder-mark,.paper-folder-chevron{color:#4786a4}.paper-folder.depth-1>.paper-folder-heading .paper-folder-mark{color:#b17a22}.paper-folder.depth-2>.paper-folder-heading .paper-folder-mark{color:#378c6e}.paper-file-icon{background:var(--coral)}.paper-view{background:var(--sky);color:var(--ink)}.paper-view:hover{background:var(--saffron);border-color:var(--saffron);color:var(--ink)}.paper-download:hover{background:var(--mint);border-color:var(--mint);color:var(--ink)}.paper-viewer-heading .section-kicker{color:#4786a4}.paper-timer-panel{box-shadow:6px 6px 0 var(--saffron)}.paper-timer-panel .section-kicker{color:var(--saffron)}.paper-timer-button{background:var(--mint);border-color:var(--mint);color:var(--ink)}.paper-timer-button:hover{background:#9bd5ba;border-color:#9bd5ba}.paper-presets button:hover,.paper-presets button.selected{border-color:var(--saffron);background:var(--saffron);color:var(--ink)}.paper-timer-panel.finished{background:var(--coral);box-shadow:6px 6px 0 var(--ink)}@media (width<=520px){.paper-folder.depth-1>.paper-folder-heading .paper-folder-mark,.paper-folder.depth-2>.paper-folder-heading .paper-folder-mark{color:inherit}}.class-card,.tool-card,.countdown-card,.question-card,.focus-card,.streak-card,.stat-card,.panel,.portal-metric,.portal-trend-card,.portal-activity,.auth-card,.paper-folder,.paper-search-results .paper-file,.pastpapers-state,.quiz-state,.quiz-result{color:#111!important;background:#fff!important}.class-card{cursor:pointer;transition:background-color .18s,color .18s,border-color .18s}.class-card:focus-visible{outline-offset:4px;outline:3px solid #111}.class-card:hover,.class-card:focus-within{color:#fff!important;background:#ed2f27!important}.class-card:hover h3,.class-card:hover p,.class-card:hover span,.class-card:hover strong,.class-card:focus-within h3,.class-card:focus-within p,.class-card:focus-within span,.class-card:focus-within strong{color:#fff!important}.tool-card{transition:background-color .18s,color .18s,border-color .18s}.tool-card:hover,.tool-card:focus-visible{color:#fff!important;background:#111!important}.tool-card:hover h3,.tool-card:hover p,.tool-card:hover span,.tool-card:hover b,.tool-card:focus-visible h3,.tool-card:focus-visible p,.tool-card:focus-visible span,.tool-card:focus-visible b,.tool-card:hover .tool-icon,.tool-card:focus-visible .tool-icon{color:#fff!important}.paper-folder,.paper-folder:hover{color:#111!important;background:#fff!important}.paper-folder>.paper-folder-heading:hover,.paper-folder>.paper-folder-heading:focus-visible{color:#fff!important;background:#ed2f27!important}.paper-folder>.paper-folder-heading:hover .paper-folder-name,.paper-folder>.paper-folder-heading:hover .paper-folder-count,.paper-folder>.paper-folder-heading:hover .paper-folder-chevron,.paper-folder>.paper-folder-heading:hover .paper-folder-mark,.paper-folder>.paper-folder-heading:focus-visible .paper-folder-name,.paper-folder>.paper-folder-heading:focus-visible .paper-folder-count,.paper-folder>.paper-folder-heading:focus-visible .paper-folder-chevron,.paper-folder>.paper-folder-heading:focus-visible .paper-folder-mark{color:#fff!important}.math-talk-lockup,.countdown-brand>.math-talk-lockup,.wordmark>.math-talk-lockup{width:auto!important;height:auto!important;color:inherit!important;font:inherit!important;text-transform:none!important;background:0 0!important;justify-content:center!important;align-items:center!important;gap:8px!important;margin:0!important;padding:0!important;display:inline-flex!important}.countdown-brand{justify-content:center;align-items:center;line-height:1;display:flex}.math-talk-lockup .math-talk-logo{flex:none!important;display:block!important}.math-talk-lockup .math-talk-name{white-space:nowrap!important;align-items:center!important;display:inline-flex!important}@media (width<=700px){html,body,#root{min-width:0;max-width:100%;overflow-x:hidden}.utility-rail{display:none}.landing-page{width:100%}.landing-header,.auth-header,.countdown-header,.quiz-header,.pastpapers-header,.paper-viewer-header,.portal-header{gap:12px;height:auto;min-height:64px;padding:12px 16px}.landing-header .main-nav{display:none}.landing-header .header-actions{margin-left:auto}.landing-header .red-button,.portal-header-actions button{padding:10px 11px;font-size:9px}.hero{grid-template-columns:1fr;gap:34px;min-height:auto;padding:52px 20px 48px}.hero h1,.countdown-hero h1,.pastpapers-hero h1,.quiz-hero h1,.quiz-setup-hero h1,.portal-hero h1{letter-spacing:-1.5px;font-size:clamp(46px,14vw,64px)}.hero-lede,.countdown-hero p,.pastpapers-hero p,.quiz-hero p,.quiz-setup-hero p,.portal-hero p{font-size:15px}.hero-actions{flex-direction:column;align-items:flex-start;gap:17px}.hero-visual{min-height:390px}.tutor-card{width:90%;height:150px;padding:12px;left:5%}.tutor-photo{width:74px;height:108px;bottom:12px;left:12px}.tutor-caption{margin-left:84px}.tutor-caption strong{font-size:19px}.equation-card{top:44px;right:3%}.section,.series-section,.quiz-workspace,.quiz-setup-workspace,.pastpapers-library,.paper-viewer-main{padding-left:20px;padding-right:20px}.section{padding-top:70px;padding-bottom:70px}.section-intro,.countdown-section-heading,.pastpapers-section-heading,.results-heading,.contact-section,.story-section,.countdown-guide,.quiz-hero,.quiz-setup-hero,.portal-hero,.portal-trends{grid-template-columns:1fr;gap:28px}.class-grid,.tools-grid,.countdown-grid,.quiz-setup-grid{grid-template-columns:1fr}.class-grid,.tools-grid,.countdown-grid{margin-top:30px}.tool-card,.class-card{min-height:0}.landing-footer{flex-wrap:wrap;min-height:0;padding:24px 20px}.landing-footer .wordmark{width:100%}.landing-footer div{flex-wrap:wrap;gap:12px}.countdown-hero,.pastpapers-hero,.quiz-hero,.quiz-setup-hero,.portal-hero{padding-top:58px;padding-bottom:52px}.countdown-hero-note,.pastpapers-hero-note,.quiz-hero-note,.quiz-setup-note,.portal-hero-note{width:auto;max-width:none}.countdown-card{min-height:0;padding:20px}.countdown-card h2{font-size:36px}.countdown-values{gap:6px}.countdown-values>div{min-width:37px}.countdown-values strong{font-size:24px}.pastpapers-section-heading,.quiz-heading,.quiz-setup-heading{flex-direction:column;align-items:flex-start}.pastpapers-tools{justify-self:stretch;width:100%}.paper-folder-heading{gap:8px;padding:14px 12px}.paper-folder-name{font-size:16px}.paper-file{flex-wrap:wrap;align-items:flex-start;gap:10px}.paper-file-copy{flex:calc(100% - 52px)}.paper-file-actions{width:100%;margin-left:0}.paper-file-actions a,.paper-file-actions button{text-align:center;flex:1;padding:10px 7px}.paper-viewer-heading{flex-direction:column;align-items:flex-start;gap:18px}.paper-viewer-heading h1{overflow-wrap:anywhere;font-size:39px}.paper-viewer-layout{grid-template-columns:1fr}.paper-timer-panel{padding:18px;position:static}.paper-document{height:68vh;min-height:420px}.paper-score-modal{padding:22px}.paper-score-modal h2{font-size:42px}.paper-score-actions{flex-direction:column-reverse}.paper-score-actions button{width:100%}.choice-grid{grid-template-columns:1fr}.question-card{grid-template-columns:1fr;padding:18px}.question-body h3{font-size:20px}.quiz-actions,.quiz-setup-summary{flex-direction:column;align-items:flex-start;gap:17px}.quiz-actions button,.quiz-setup-summary .red-button{width:100%}.auth-main{grid-template-columns:1fr;gap:34px;padding:48px 20px}.auth-copy h1,.auth-state h1{font-size:50px}.auth-card{box-sizing:border-box;width:100%;padding:20px}.auth-fields.two-column{grid-template-columns:1fr}.portal-header .countdown-brand{margin:0 auto}.portal-header-actions{gap:8px}.portal-header-actions>span{display:none}.portal-metrics{grid-template-columns:1fr;padding:34px 20px 0}.portal-trends{padding:15px 20px 0}.portal-trend-card,.portal-activity,.portal-leaderboard{padding:18px 14px}.portal-activity,.portal-leaderboard{margin-left:20px;margin-right:20px}.portal-card-heading{flex-direction:column;align-items:flex-start;gap:8px}.portal-card-heading h2{font-size:30px}.leaderboard-row{grid-template-columns:32px 30px minmax(0,1fr) 76px;gap:8px}.leaderboard-student strong{font-size:12px}.leaderboard-row>b{font-size:9px}.leaderboard-student small{font-size:8px}}@media (width<=380px){.math-talk-name{font-size:17px!important}.math-talk-logo{width:31px!important;height:31px!important}.hero h1,.countdown-hero h1,.pastpapers-hero h1,.quiz-hero h1,.quiz-setup-hero h1,.portal-hero h1{font-size:45px}.leaderboard-row{grid-template-columns:27px 27px minmax(0,1fr) 64px}}button,a{-webkit-tap-highlight-color:transparent}.red-button,.primary-button,.light-button,.outline-button,.text-button,.paper-timer-button,.paper-reset-button,.paper-finish-button,.paper-view,.paper-download,.auth-back,.countdown-back,.pastpapers-back,.quiz-back,.paper-exit,.class-bottom button,.auth-tabs button,.answer-grid button,.booking-close,.paper-score-saved button{vertical-align:middle;box-sizing:border-box;justify-content:center;align-items:center;line-height:1.15;display:inline-flex}.red-button,.primary-button,.light-button,.outline-button,.paper-timer-button,.paper-reset-button,.paper-finish-button,.paper-view,.paper-download{min-height:38px}.red-button,.primary-button,.light-button,.outline-button,.paper-timer-button,.paper-reset-button,.paper-finish-button,.paper-view,.paper-download,.paper-score-saved button{white-space:nowrap}.auth-tabs button{min-height:38px}.answer-grid button{width:100%;min-height:40px}.booking-close{padding:0}@media (width<=520px){.red-button.large,.booking-submit,.paper-score-side-panel .paper-timer-button{min-height:42px}.paper-score-saved{flex-direction:column;align-items:stretch}.paper-score-saved button{width:100%}}.results-section .results-heading h2 em{opacity:1;color:#fff!important}:root{--nd-pink:#ff7fa8;--nd-pink-deep:#f15e92;--nd-lime:#df0;--nd-cream:#f2e6d3;--nd-blue:#91dfff;--nd-red:#ff4d45;--nd-ink:#050505;--nd-muted:#514b47;--nd-shadow:7px 7px 0 var(--nd-ink)}body{background:var(--nd-cream);color:var(--nd-ink);font-family:Space Grotesk,DM Sans,sans-serif}button,input,select,textarea{font-family:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--nd-lime);outline-offset:4px}.site-shell,.landing-page,.countdown-page,.quiz-page,.portal-page,.auth-page,.pastpapers-page,.paper-viewer-page,.paper-result-page{background-color:var(--nd-cream);color:var(--nd-ink)}.utility-rail{display:none}.landing-page{width:100%;overflow:hidden}.landing-header,.countdown-header,.quiz-header,.portal-header,.auth-header,.pastpapers-header,.paper-viewer-header{border-bottom:3px solid var(--nd-ink);background:var(--nd-cream);min-height:76px;color:var(--nd-ink)}.landing-header{padding-inline:clamp(20px,5vw,72px)}.landing-header .wordmark,.countdown-brand,.paper-viewer-header .countdown-brand,.portal-header .countdown-brand,.quiz-header .countdown-brand,.auth-header .countdown-brand,.pastpapers-header .countdown-brand{letter-spacing:.5px;text-transform:uppercase;font-family:Archivo Narrow,Impact,sans-serif;font-size:24px}.math-talk-name{text-transform:uppercase;color:var(--nd-ink)!important;letter-spacing:.3px!important;font-family:Impact,Arial Black,sans-serif!important}.math-talk-name span{color:var(--nd-red)!important}.math-talk-logo{border:2px solid var(--nd-ink);background:var(--nd-blue);border-radius:50%;padding:2px}.main-nav a,.landing-footer a,.plain-link,.section-kicker,.countdown-location,.quiz-location,.pastpapers-location,.paper-exit,.countdown-back,.quiz-back,.auth-back,.pastpapers-back,.paper-download,.paper-download-report,.landing-footer,.portal-header-actions{letter-spacing:.6px;text-transform:uppercase;font-family:DM Mono,monospace;font-weight:700}.main-nav a,.landing-footer a,.plain-link,.countdown-back,.quiz-back,.auth-back,.pastpapers-back,.paper-exit{color:var(--nd-ink)}.main-nav a:hover,.landing-footer a:hover,.countdown-back:hover,.quiz-back:hover,.auth-back:hover,.pastpapers-back:hover,.paper-exit:hover{color:var(--nd-red)}.red-button,.primary-button,.light-button,.outline-button,.paper-timer-button,.paper-finish-button,.paper-reset-button,.paper-direct-grade-button,.paper-upload-grade-button,.paper-open-result-button,.paper-download-report{border:3px solid var(--nd-ink);background:var(--nd-lime);color:var(--nd-ink);box-shadow:4px 4px 0 var(--nd-ink);text-transform:uppercase;border-radius:12px;font-family:DM Mono,monospace;font-weight:700}.red-button:hover,.primary-button:hover,.light-button:hover,.outline-button:hover,.paper-timer-button:hover,.paper-finish-button:hover,.paper-direct-grade-button:hover,.paper-upload-grade-button:hover,.paper-open-result-button:hover,.paper-download-report:hover{background:var(--nd-pink);color:var(--nd-ink);border-color:var(--nd-ink)}.red-button:active,.primary-button:active,.light-button:active,.outline-button:active,.paper-timer-button:active,.paper-finish-button:active,.paper-direct-grade-button:active,.paper-upload-grade-button:active,.paper-open-result-button:active,.paper-download-report:active{box-shadow:1px 1px 0 var(--nd-ink);transform:translate(3px,3px)}.section-kicker{color:var(--nd-ink)}.hero,.countdown-hero,.quiz-hero,.quiz-setup-hero,.portal-hero,.pastpapers-hero,.auth-main{background-color:var(--nd-pink);background-image:radial-gradient(#0000001a 1px,#0000 1px);background-size:13px 13px}.hero,.countdown-hero,.quiz-hero,.quiz-setup-hero,.portal-hero,.pastpapers-hero{border-bottom:3px solid var(--nd-ink)}.hero h1,.section h2,.countdown-hero h1,.countdown-section-heading h2,.countdown-guide h2,.quiz-hero h1,.quiz-setup-hero h1,.portal-hero h1,.pastpapers-hero h1,.auth-copy h1,.auth-state h1,.paper-result-heading h1{color:var(--nd-ink);letter-spacing:.5px;text-transform:uppercase;font-family:Impact,Arial Black,Archivo Narrow,sans-serif;font-weight:900;line-height:.83}.hero h1 em,.section h2 em,.countdown-hero h1 em,.countdown-section-heading h2 em,.countdown-guide h2 em,.quiz-hero h1 em,.quiz-setup-hero h1 em,.portal-hero h1 em,.pastpapers-hero h1 em,.auth-copy h1 em,.auth-state h1 em,.paper-result-heading h1 em{color:var(--nd-ink);background:var(--nd-lime);box-shadow:5px 0 0 var(--nd-lime), -5px 0 0 var(--nd-lime);padding:0 .08em;display:inline}.hero-lede,.section-intro>p,.story-copy>p,.results-heading>p,.countdown-hero p,.countdown-section-heading>p,.quiz-hero p,.quiz-setup-hero p,.portal-hero p,.pastpapers-hero p,.auth-copy p,.auth-state p,.paper-result-heading p{color:var(--nd-muted)}.hero-visual{border:3px solid var(--nd-ink);box-shadow:9px 9px 0 var(--nd-ink);background:var(--nd-blue)}.hero-visual .visual-grid{opacity:.65;background-image:linear-gradient(#00000024 2px,#0000 2px),linear-gradient(90deg,#00000024 2px,#0000 2px);background-size:34px 34px}.tutor-card,.equation-card,.class-card,.countdown-card,.question-card,.quiz-state,.portal-trend-card,.portal-activity,.auth-card,.paper-folder,.paper-score-side-panel,.paper-result-report{border:3px solid var(--nd-ink);box-shadow:var(--nd-shadow);background:var(--nd-cream);border-radius:16px}.tutor-card,.equation-card{border-radius:14px}.equation-card{box-shadow:5px 5px 0 var(--nd-red)}.class-grid,.countdown-grid,.results-grid,.tools-grid,.portal-metrics,.portal-trends,.quiz-setup-grid{gap:22px}.class-card,.countdown-card,.tool-card,.portal-metric,.quiz-choice,.quiz-setup-field select{border-width:3px;border-color:var(--nd-ink);border-radius:14px}.class-card:hover,.tool-card:hover,.countdown-card:hover,.portal-metric:hover{box-shadow:10px 10px 0 var(--nd-ink)}.class-card.card-1,.countdown-card.dark,.portal-metric.dark,.tool-card.red-tool,.story-section,.landing-footer,.paper-timer-panel{background:var(--nd-ink);color:#fff}.trust-strip,.results-section,.countdown-guide,.quiz-result,.portal-metric.red,.paper-timer-panel.finished{background:var(--nd-lime);color:var(--nd-ink);border-top:3px solid var(--nd-ink);border-bottom:3px solid var(--nd-ink)}.story-section{border-top:3px solid var(--nd-ink);border-bottom:3px solid var(--nd-ink)}.story-panel{border:3px solid var(--nd-pink);box-shadow:8px 8px 0 var(--nd-pink)}.results-section,.countdown-guide{background-image:radial-gradient(#0000001f 1px,#0000 1px);background-size:11px 11px}.results-heading h2 em,.countdown-guide h2 em{background:var(--nd-pink);box-shadow:5px 0 0 var(--nd-pink), -5px 0 0 var(--nd-pink)}.tool-card,.portal-metric.light,.portal-metric.gold{background:var(--nd-cream)}.tool-card.red-tool{border-color:var(--nd-ink)}.paper-viewer-page,.paper-result-page{background-image:radial-gradient(#0000001a 1px,#0000 1px);background-size:13px 13px}.paper-viewer-main,.paper-result-main,.portal-main,.auth-main{position:relative}.paper-viewer-heading,.paper-result-heading,.portal-card-heading,.quiz-heading,.quiz-setup-heading,.countdown-section-heading{border-bottom-width:3px;border-color:var(--nd-ink)}.paper-result-report{background:var(--nd-cream)}.paper-grading-score,.quiz-timer,.quiz-hero-note,.portal-hero-note,.pastpapers-hero-note{border:3px solid var(--nd-ink);box-shadow:var(--nd-shadow);background:var(--nd-ink)}.paper-mistake,.paper-correct-answer,.paper-file-list>div,.paper-grading-section{border-radius:10px}.paper-mistake{border-left-width:8px;border-left-color:var(--nd-red)}.paper-correct-answer{border-left-width:8px;border-left-color:var(--nd-lime);background:#f4f0df}.annotated-paper-viewer{border:3px solid var(--nd-ink);box-shadow:8px 8px 0 var(--nd-ink)}.annotated-paper-toolbar{background:var(--nd-ink);border-bottom:3px solid var(--nd-ink)}.annotated-paper-toolbar button:hover,.annotated-paper-toolbar button.selected{background:var(--nd-lime);border-color:var(--nd-lime);color:var(--nd-ink)}.auth-card,.paper-score-side-panel{box-shadow:9px 9px 0 var(--nd-red)}.auth-message,.paper-score-message,.quiz-submit-error{border-left:8px solid var(--nd-red);color:var(--nd-ink);background:#ffd1db}.landing-footer{border-top:3px solid var(--nd-ink)}@media (width<=800px){.main-nav{display:none}.landing-header,.countdown-header,.quiz-header,.portal-header,.auth-header,.pastpapers-header,.paper-viewer-header{min-height:68px}.hero,.countdown-hero,.quiz-hero,.quiz-setup-hero,.portal-hero,.pastpapers-hero,.auth-main{background-size:10px 10px}}@media (width<=520px){.hero h1,.section h2,.countdown-hero h1,.quiz-hero h1,.quiz-setup-hero h1,.portal-hero h1,.pastpapers-hero h1,.auth-copy h1,.auth-state h1,.paper-result-heading h1{letter-spacing:0}.tutor-card{transform-origin:0 100%;transform:scale(.9)}}.deck-shell{width:100%;height:100svh;min-height:0;overflow:hidden}.deck-page{overscroll-behavior-y:contain;scroll-behavior:smooth;scroll-snap-type:y mandatory;width:100%;height:100%;min-height:0;scroll-padding-top:105px;overflow:hidden auto}.deck-header{min-height:78px}.deck-slide{box-sizing:border-box;scroll-snap-align:start;scroll-snap-stop:always;min-height:calc(100svh - 78px);padding-block:clamp(38px,6vh,78px)}.deck-marquee{box-sizing:border-box;white-space:nowrap;flex-wrap:nowrap;gap:clamp(8px,1.3vw,22px);width:calc(100% + clamp(24px,8vw,130px) + clamp(24px,8vw,130px));min-height:58px;position:absolute;bottom:0;left:clamp(-130px,-8vw,-24px);right:auto;overflow:hidden}.deck-hero{padding-bottom:max(96px,clamp(38px,6vh,78px) + 58px);position:relative}.deck-hero-copy h1{text-wrap:nowrap;max-width:none;font-size:clamp(52px,5.2vw,100px);line-height:.92}.deck-proof-line{margin-top:clamp(18px,3vh,34px)}.deck-stage{min-height:clamp(320px,54vh,460px)}.deck-note-main{height:clamp(205px,28vh,245px);min-height:0;padding:17px;bottom:44px}.deck-note-main strong{margin-top:21px}.deck-note-photo{width:94px;height:126px;bottom:10px;right:10px}.deck-note-small{width:min(178px,40%);padding:13px;top:clamp(68px,10vh,84px)}.deck-note-small strong{margin-top:15px;font-size:clamp(16px,1.1vw,19px)}.deck-sticker{width:86px;height:86px;font-size:13px;bottom:14px;right:14px}.deck-tools{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(24px,3vw,48px)}.deck-tools-intro h2{max-width:none;font-size:clamp(52px,5.1vw,90px)}.deck-tool-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.deck-tool{box-sizing:border-box;min-width:0;min-height:clamp(220px,30vh,285px);padding:clamp(15px,1.5vw,24px)}.deck-tool .tool-icon{width:clamp(36px,3.5vw,54px);height:clamp(36px,3.5vw,54px);margin-bottom:auto}.deck-tool strong{font-size:clamp(17px,1.5vw,25px)}.deck-tool small{max-width:23ch;line-height:1.35}.deck-contact{padding-bottom:112px;position:relative}.deck-footer{box-sizing:border-box;min-height:76px;position:absolute;bottom:0;left:0;right:0}.deck-page :is(.deck-hero,.deck-problem,.deck-method,.deck-dont,.deck-formats,.deck-tools,.deck-proof,.deck-contact){scroll-margin-top:0}.deck-page .deck-format-grid,.deck-page .deck-card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.deck-page .deck-card,.deck-page .deck-format{min-height:clamp(220px,29vh,275px)}.deck-page :is(h1,h2,h3,p,strong,small),.countdown-page :is(h1,h2,p,strong),.quiz-page :is(h1,h2,h3,p,strong),.pastpapers-page :is(h1,h2,p,strong){overflow-wrap:anywhere;min-width:0}.deck-page :is(h1,h2){text-wrap:balance;line-height:.91}.deck-hero-copy h1{text-wrap:nowrap;max-width:none}.deck-section-head h2,.deck-problem-copy h2,.deck-dont-title h2,.deck-tools-intro h2,.deck-proof-copy h2,.deck-contact h2{max-width:10ch}.deck-page :is(.deck-method,.deck-formats) .deck-section-head h2,.deck-page .deck-dont .deck-dont-title h2,:is(.deck-method,.deck-formats) .deck-section-head h2,.deck-dont .deck-dont-title h2{line-height:1.1}.deck-page :is(.deck-method,.deck-dont,.deck-formats) h2 mark,:is(.deck-method,.deck-dont,.deck-formats) h2 mark{line-height:1;display:inline-block}.deck-stage{isolation:isolate}.deck-note{box-sizing:border-box}.deck-note-main{width:min(67%,360px);height:clamp(205px,28vh,245px);min-height:0;bottom:44px}.deck-note-main strong,.deck-note-main small{max-width:calc(100% - 132px)}.deck-note-main strong{font-size:clamp(25px,2.1vw,32px);line-height:.96}.deck-note-small{z-index:4;width:min(180px,43%)}.deck-note-small strong{font-size:clamp(17px,1.5vw,21px);line-height:1}.deck-sticker{z-index:5}.deck-card-grid,.deck-format-grid,.deck-tool-grid,.deck-proof-grid{align-items:stretch}@media (width>=901px){.deck-header{box-sizing:border-box;height:78px;min-height:78px}.deck-page{scroll-padding-top:78px}.deck-page>.deck-slide{box-sizing:border-box;scroll-snap-stop:always;height:calc(100svh - 78px);min-height:calc(100svh - 78px);padding-block:clamp(24px,4vh,44px)}.deck-page>.deck-hero{padding-top:clamp(24px,4vh,44px);padding-bottom:96px}.deck-page .deck-section-head h2,.deck-page .deck-problem-copy h2,.deck-page .deck-dont-title h2,.deck-page .deck-tools-intro h2,.deck-page .deck-proof-copy h2,.deck-page .deck-contact h2{max-width:none;margin-block:14px 18px;font-size:clamp(42px,4.5vw,68px);line-height:.88}.deck-page :is(.deck-method,.deck-formats) .deck-section-head h2,.deck-page .deck-dont .deck-dont-title h2{line-height:1.1}.deck-page .deck-section-head{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,4vw,50px)}.deck-page .deck-section-head>p,.deck-page .deck-problem-copy>p,.deck-page .deck-tools-intro>p,.deck-page .deck-proof-copy>p,.deck-page .deck-contact>div>p{font-size:15px}.deck-page .deck-card-grid,.deck-page .deck-format-grid{margin-top:clamp(22px,3vh,32px)}.deck-page .deck-card{min-height:clamp(170px,22vh,200px)}.deck-page .deck-card h3{padding-top:24px}.deck-page .deck-format{min-height:clamp(150px,21vh,185px)}.deck-page .deck-dont-list>div{padding-block:13px}.deck-page .deck-tool{min-height:clamp(150px,22vh,190px)}}@media (width<=900px){.deck-header{box-sizing:border-box;height:68px;min-height:68px}.deck-page{scroll-padding-top:68px}}@media (width<=560px){.deck-marquee{width:calc(100% + 40px);left:-20px}}.paper-tree{gap:14px;margin-top:22px;display:grid}.paper-folder,.paper-folder.depth-1,.paper-folder.depth-2,.paper-folder.depth-3{border-radius:0;margin:0;overflow:visible;box-shadow:none!important;background:0 0!important;border:0!important}.paper-folder.depth-0{border-radius:10px;overflow:hidden;border:2px solid var(--nd-ink)!important;box-shadow:5px 5px 0 var(--nd-ink)!important;background:#fffaf2!important}.paper-folder:focus-within{outline:none}.paper-folder-heading{background:0 0;border:0;border-radius:7px;flex-wrap:nowrap;align-items:center;gap:12px;min-height:48px;padding:10px 14px;display:flex}.paper-folder.depth-0>.paper-folder-heading{border-bottom:2px solid var(--nd-ink);background:var(--nd-pink);border-radius:0;min-height:58px;padding:14px 18px}.paper-folder.depth-0>.paper-folder-heading:hover{background:#ff94b6}.paper-folder-chevron{width:16px;color:var(--nd-ink);text-align:center;flex:0 0 16px}.paper-folder-chevron svg{width:16px;height:16px;display:block}.paper-folder-icon{width:19px;height:19px;color:var(--nd-ink);flex:0 0 19px}.paper-folder-icon.qualification{color:var(--nd-ink)}.paper-folder.depth-2 .paper-folder-icon,.paper-folder.depth-3 .paper-folder-icon{color:#34302d}.paper-folder-name{letter-spacing:0;text-transform:none;flex:auto;min-width:0;font:700 16px/1.2 Space Grotesk,sans-serif}.paper-folder.depth-0>.paper-folder-heading .paper-folder-name{font-size:18px}.paper-folder-count{color:#494440;letter-spacing:.07em;flex:none;margin-left:auto;font:500 9px DM Mono,monospace}.paper-folder-content{padding:4px 16px 12px 34px}.paper-folder.depth-1{margin-left:4px;position:relative;border-left:2px solid var(--nd-pink-deep)!important}.paper-folder.depth-1>.paper-folder-heading{min-height:50px}.paper-folder.depth-1>.paper-folder-content{padding:0 0 4px 16px}.paper-folder.depth-2,.paper-folder.depth-3{position:relative}.paper-folder.depth-2:before,.paper-folder.depth-3:before{content:"";pointer-events:none;border-left:1px solid #e6afc0;position:absolute;top:0;bottom:0;left:21px}.paper-folder.depth-2>.paper-folder-heading,.paper-folder.depth-3>.paper-folder-heading{border-radius:6px;min-height:44px;padding:8px 12px 8px 14px}.paper-folder.depth-2>.paper-folder-content,.paper-folder.depth-3>.paper-folder-content{padding:0 8px 4px 26px}.paper-folder.depth-2 .paper-folder-name,.paper-folder.depth-3 .paper-folder-name{font-size:14px;font-weight:600}.paper-folder-heading:focus-visible{outline-offset:-2px;outline:2px solid #bd4a42}@media (width<=560px){.paper-folder-heading{gap:8px;padding-inline:9px}.paper-folder.depth-0>.paper-folder-heading{padding-inline:11px}.paper-folder-name{font-size:14px}.paper-folder.depth-0>.paper-folder-heading .paper-folder-name{font-size:15px}.paper-folder-count{letter-spacing:0;font-size:8px}.paper-folder-content{padding-inline:14px 6px}.paper-folder.depth-1>.paper-folder-content{padding-left:9px}.paper-folder.depth-1>.paper-folder-heading{padding-left:8px}.paper-folder.depth-2>.paper-folder-heading,.paper-folder.depth-3>.paper-folder-heading{padding-inline:8px}}.deck-card{box-sizing:border-box;flex-direction:column;min-height:290px;display:flex}.deck-card h3{overflow-wrap:normal;margin:auto 0 12px;padding-top:50px;line-height:1}.deck-card p{max-width:32ch;margin:0 0 12px}.deck-format{box-sizing:border-box}.deck-format h3{overflow-wrap:normal;line-height:1}.deck-tool strong{overflow-wrap:normal;line-height:1.02}.deck-proof-grid>div{min-width:0}.deck-card,.deck-format,.deck-tool,.deck-proof-grid>div,.countdown-card,.quiz-choice,.question-card,.paper-folder,.paper-file,.paper-browser-guide,.countdown-hero-note,.quiz-setup-note,.pastpapers-hero-note{transition:transform .22s cubic-bezier(.2,0,0,1),box-shadow .22s cubic-bezier(.2,0,0,1),background-color .18s,border-color .18s}.deck-card:hover,.deck-card:focus-within,.deck-format:hover,.deck-format:focus-within,.deck-tool:hover,.deck-tool:focus-visible,.countdown-card:hover,.question-card:hover,.paper-browser-guide:hover,.paper-file:hover{box-shadow:10px 10px 0 var(--nd-ink);transform:translate(-4px,-4px)}.deck-card:focus-within,.deck-format:focus-within,.deck-tool:focus-visible,.countdown-card:focus-within,.paper-folder:focus-within,.paper-file:focus-within{outline:3px solid var(--nd-ink);outline-offset:4px}.deck-format:nth-child(2):hover{background-color:var(--nd-pink)}.quiz-page{min-height:100vh}.quiz-header,.countdown-header,.pastpapers-header{box-sizing:border-box;min-height:76px}.quiz-hero,.quiz-setup-hero,.pastpapers-hero,.countdown-hero{align-items:center}.quiz-hero h1,.quiz-setup-hero h1,.pastpapers-hero h1,.countdown-hero h1{text-wrap:balance;line-height:.94}.quiz-hero-note,.quiz-setup-note,.pastpapers-hero-note,.countdown-hero-note{box-sizing:border-box;min-width:0}.quiz-hero-note strong,.quiz-setup-note strong,.pastpapers-hero-note strong{line-height:1}.quiz-workspace{padding-top:58px}.quiz-heading{margin-bottom:20px}.quiz-session-layout{grid-template-columns:minmax(195px,245px) minmax(0,1fr);align-items:start;gap:clamp(18px,3vw,36px);display:grid}.quiz-progress-rail{border:3px solid var(--nd-ink);background:var(--nd-lime);min-width:0;box-shadow:6px 6px 0 var(--nd-ink);padding:20px;position:sticky;top:95px}.quiz-rail-heading{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.quiz-rail-heading>span,.quiz-progress-label,.quiz-timer-compact>span{letter-spacing:.8px;text-transform:uppercase;font:700 9px DM Mono,monospace}.quiz-rail-heading strong{white-space:nowrap;font:900 24px/.9 Impact,sans-serif}.quiz-rail-heading small{font:700 10px DM Mono,monospace}.quiz-timer-compact{border-top:2px solid var(--nd-ink);border-bottom:2px solid var(--nd-ink);justify-content:space-between;align-items:center;gap:8px;margin:20px 0 17px;padding:12px 0;display:flex}.quiz-timer-compact strong{font:700 16px DM Mono,monospace}.quiz-timer-compact strong.urgent{color:#c92d35}.quiz-progress-label{justify-content:space-between;gap:8px;display:flex}.quiz-progress-track{background:#0505052e;height:7px;margin:9px 0 20px;overflow:hidden}.quiz-progress-track span{background:var(--nd-ink);height:100%;transition:width .25s;display:block}.question-steps{gap:7px;margin:0;display:grid}.question-steps button{width:100%;height:auto;min-height:42px;color:var(--nd-ink);text-align:left;background:0 0;border:2px solid #0505053d;justify-content:space-between;align-items:center;gap:8px;padding:7px 9px;transition:transform .16s,background-color .16s,color .16s;display:flex}.question-steps button>span{font:700 11px DM Mono,monospace}.question-steps button small{text-transform:uppercase;font:700 8px DM Mono,monospace}.question-steps button:hover{transform:translate(3px)}.question-steps button.active{background:var(--nd-ink);color:var(--nd-lime);box-shadow:3px 3px 0 var(--nd-pink-deep)}.question-steps button.answered:not(.active){border-color:var(--nd-ink);background:#05050514}.quiz-rail-tip{margin:18px 0 0;font:500 11px/1.4 Space Grotesk,sans-serif}.quiz-question-column{min-width:0}.question-card{grid-template-columns:54px minmax(0,1fr)}.question-body h3{text-transform:none;overflow-wrap:normal;line-height:1.18}.quiz-choice{border-radius:8px;min-width:0;line-height:1.25}.quiz-setup-workspace{max-width:1220px;margin:0 auto}.quiz-setup-heading h2{line-height:1.05}.quiz-setup-grid{align-items:stretch}.quiz-setup-field{border:2px solid var(--nd-ink);min-width:0;box-shadow:4px 4px 0 var(--nd-ink);background:#f2e6d3;padding:18px}.quiz-setup-field select{white-space:normal;border-radius:7px;min-height:54px}.quiz-setup-summary{background:var(--nd-pink);align-items:center;padding:22px}.quiz-setup-summary>div{min-width:0}.countdown-hero-note strong{text-transform:uppercase;overflow-wrap:normal;max-width:15ch;font:900 clamp(22px,2.8vw,34px)/1.03 Impact,Arial Black,sans-serif}.countdown-hero-note small{margin-top:8px;font:700 9px DM Mono,monospace;display:block}.countdown-grid{grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);align-items:stretch}.countdown-card{box-sizing:border-box;min-height:0;padding:clamp(20px,3vw,32px)}.countdown-card.is-next{background:var(--nd-lime);box-shadow:8px 8px 0 var(--nd-ink);border-width:4px}.countdown-card.is-next.dark{color:var(--nd-ink)}.countdown-card.is-next.dark>p,.countdown-card.is-next.dark .countdown-date span,.countdown-card.is-next.dark .countdown-date small,.countdown-card.is-next.dark .countdown-values span{color:var(--nd-muted)}.countdown-card.is-next.dark .countdown-date{border-color:#05050559}.countdown-card.is-next.dark .countdown-values strong{color:var(--nd-ink)}.countdown-card.is-next.dark .series-tags span{border-color:#05050573}.countdown-card.is-next.dark .series-window{color:var(--nd-ink)}.countdown-card.is-next .series-index{border:2px solid var(--nd-ink);color:var(--nd-ink);border-radius:999px;align-items:center;padding:6px 9px;display:inline-flex}.countdown-card h2{text-wrap:balance;line-height:1}.countdown-card>p{line-height:1.5}.countdown-values{grid-template-columns:repeat(7,minmax(0,1fr));align-items:end;gap:6px;display:grid}.countdown-values>div{min-width:0}.countdown-values strong{letter-spacing:-.08em;font-size:clamp(21px,2.8vw,37px)}.countdown-values span{letter-spacing:.02em;font-size:clamp(6px,.7vw,8px)}.countdown-values>b{justify-self:center;margin:0 0 17px}.countdown-guide{align-items:start}.countdown-guide-intro>p{color:#050505b8;max-width:32ch;font:500 14px/1.5 Space Grotesk,sans-serif}.guide-steps>div{padding-block:16px;transition:padding-left .18s,background-color .18s}.guide-steps>div:hover{background:#ffffff1a;padding-left:9px}.guide-steps strong{line-height:1.15}.guide-steps span{line-height:1.5}.pastpapers-hero-copy h1{max-width:10ch}.pastpapers-library{padding-top:clamp(55px,8vw,100px)}.paper-library-topline{border-bottom:3px solid var(--nd-ink);grid-template-columns:minmax(0,1fr) minmax(250px,390px);align-items:end;gap:32px;padding-bottom:24px;display:grid}.paper-library-topline h2{text-transform:uppercase;text-wrap:balance;margin:14px 0 0;font:900 clamp(38px,5vw,67px)/.96 Impact,Arial Black,sans-serif}.paper-library-topline h2 em{color:var(--nd-ink);background:var(--nd-lime);box-shadow:5px 0 var(--nd-lime), -5px 0 var(--nd-lime);font-style:normal}.pastpapers-tools{width:100%}.pastpapers-tools input{border-radius:8px;min-height:52px;font:600 14px Space Grotesk,sans-serif}.paper-filter-row{flex-wrap:wrap;gap:8px;padding:18px 0;display:flex}.paper-filter-row button{border:2px solid var(--nd-ink);min-height:38px;color:var(--nd-ink);cursor:pointer;text-transform:uppercase;background:0 0;border-radius:999px;align-items:center;gap:11px;padding:7px 13px;font:700 9px DM Mono,monospace;transition:transform .16s,background-color .16s,color .16s;display:flex}.paper-filter-row button b{background:#0505051a;border-radius:50%;place-items:center;width:21px;height:21px;font-size:8px;display:grid}.paper-filter-row button:hover{transform:translateY(-2px)}.paper-filter-row button.active{background:var(--nd-ink);color:var(--nd-lime)}.paper-filter-row button.active b{background:var(--nd-pink);color:var(--nd-ink)}.paper-browser-layout{grid-template-columns:minmax(210px,270px) minmax(0,1fr);align-items:start;gap:24px;display:grid}.paper-browser-guide{border:3px solid var(--nd-ink);background:var(--nd-lime);box-shadow:6px 6px 0 var(--nd-ink);padding:20px;position:sticky;top:20px}.paper-guide-index,.paper-browser-heading>div>span{letter-spacing:1px;text-transform:uppercase;font:700 9px DM Mono,monospace}.paper-guide-step{border-top:1px solid #05050566;grid-template-columns:31px minmax(0,1fr);gap:5px 9px;padding:17px 0;display:grid}.paper-guide-step:first-of-type{margin-top:17px}.paper-guide-step b{grid-row:span 2;font:700 10px DM Mono,monospace}.paper-guide-step strong{text-transform:uppercase;font:900 15px/1 Impact,Arial Black,sans-serif}.paper-guide-step span{grid-column:2;font:500 11px/1.4 Space Grotesk,sans-serif}.paper-guide-count{border-top:2px solid var(--nd-ink);justify-content:space-between;align-items:end;gap:8px;padding-top:15px;display:flex}.paper-guide-count strong{font:900 38px/.9 Impact,Arial Black,sans-serif}.paper-guide-count span{text-align:right;max-width:100px;font:700 8px/1.3 DM Mono,monospace}.paper-browser-main{min-width:0}.paper-browser-heading{border-bottom:2px solid var(--nd-ink);justify-content:space-between;align-items:end;gap:20px;padding:10px 0 14px;display:flex}.paper-browser-heading>div{gap:7px;display:grid}.paper-browser-heading>div>strong{text-transform:uppercase;font:900 24px/1 Impact,Arial Black,sans-serif}.paper-browser-heading>small{color:var(--nd-muted);text-align:right;font:500 11px/1.4 Space Grotesk,sans-serif}.paper-tree{margin-top:17px}.paper-folder{border-radius:9px;overflow:clip}.paper-folder-heading{min-height:60px;padding:13px 17px;transition:background-color .15s}.paper-folder-heading:hover{background:var(--nd-pink)}.paper-folder-name{overflow-wrap:normal;line-height:1.15}.paper-folder-count{text-align:right}.paper-folder-content{padding-bottom:12px}.paper-file{border-radius:8px;min-width:0;padding:13px 10px}.paper-file-copy strong{line-height:1.2}.paper-file-actions{gap:7px}.paper-file-actions :is(button,a){border-radius:7px;transition:transform .16s,background-color .16s,color .16s}.paper-file-actions :is(button,a):hover{transform:translateY(-2px)}.paper-search-results{min-width:0}@keyframes study-page-enter{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.countdown-page main>section,.quiz-page main>section,.pastpapers-page main>section{animation:.52s cubic-bezier(.2,0,0,1) both study-page-enter}.countdown-page main>section:nth-child(2),.quiz-page main>section:nth-child(2),.pastpapers-page main>section:nth-child(2){animation-delay:70ms}.countdown-card,.quiz-choice,.paper-folder-heading,.paper-file-actions :is(button,a),.quiz-navigation button,.quiz-setup-field select{transition-duration:.18s}.paper-folder-heading:focus-visible,.paper-filter-row button:focus-visible,.question-steps button:focus-visible{outline:3px solid var(--nd-pink-deep);outline-offset:3px}@media (width<=900px){.deck-header{min-height:68px}.deck-page{scroll-snap-type:y proximity;height:100%;scroll-padding-top:68px}.deck-slide{min-height:calc(100svh - 68px);padding-block:clamp(24px,4vh,42px)}.deck-page>.deck-slide{scroll-snap-stop:normal}.deck-hero{grid-template-columns:minmax(0,1fr) minmax(260px,.9fr);gap:24px;padding-bottom:max(82px,clamp(24px,4vh,42px) + 48px)}.deck-hero-copy h1{text-wrap:nowrap;max-width:none;font-size:clamp(48px,6.2vw,62px)}.deck-stage{min-height:clamp(290px,42vh,390px)}.deck-note-main{height:clamp(205px,30vh,235px);min-height:0;bottom:35px}.deck-note-small{width:min(158px,40%);top:64px}.deck-sticker{width:76px;height:76px}.deck-proof-line{margin-top:24px}.deck-problem{grid-template-columns:90px minmax(0,1fr) 120px;gap:20px}.deck-section-head{grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:24px}.deck-page .deck-card-grid,.deck-page .deck-format-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:28px}.deck-page .deck-card,.deck-page .deck-format{min-height:clamp(205px,28vh,245px);padding:16px}.deck-page .deck-card h3{padding-top:26px;font-size:clamp(19px,2.5vw,26px)}.deck-page .deck-card p,.deck-page .deck-format p{font-size:11px}.deck-dont,.deck-proof{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:28px}.deck-dont-list>div{padding-block:10px;font-size:clamp(18px,2.8vw,26px)}.deck-tools{grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:24px}.deck-tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.deck-tool{min-height:clamp(205px,28vh,240px)}.deck-tools-intro h2{font-size:clamp(42px,6vw,60px)}.deck-contact,.deck-page .deck-footer{display:flex}.countdown-grid{grid-template-columns:1fr 1fr}.quiz-session-layout{grid-template-columns:1fr}.quiz-progress-rail{position:static}.question-steps{grid-template-columns:repeat(5,minmax(0,1fr))}.question-steps button{justify-content:center;min-height:44px}.question-steps button small{display:none}.paper-browser-layout{grid-template-columns:1fr}.paper-browser-guide{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 14px;display:grid;position:static}.paper-guide-index,.paper-guide-count{grid-column:1/-1}.paper-guide-step:first-of-type{margin-top:12px}}@media (width<=640px){.countdown-grid{grid-template-columns:1fr}.deck-note-main{width:82%;min-height:225px;padding:15px;left:5%}.deck-note-main strong{margin-top:22px;font-size:24px}.deck-note-main small{font-size:8px}.deck-note-photo{width:74px;height:102px;bottom:10px;right:9px}.deck-note-small{width:42%;padding:13px;top:76px;right:4%}.deck-sticker{width:86px;height:86px;font-size:13px;bottom:18px;right:9px}.deck-card{min-height:250px}.deck-card h3{padding-top:28px;font-size:28px}.quiz-session-layout{gap:18px}.quiz-progress-rail{padding:15px}.question-steps{grid-template-columns:repeat(4,minmax(0,1fr))}.paper-library-topline{grid-template-columns:1fr;gap:24px}.paper-browser-guide{grid-template-columns:1fr}.paper-guide-index,.paper-guide-count{grid-column:auto}.paper-browser-heading{flex-direction:column;align-items:flex-start}.paper-browser-heading>small{text-align:left}.paper-filter-row{gap:6px}.paper-filter-row button{flex:calc(50% - 6px);justify-content:space-between;font-size:8px}.paper-folder-heading{flex-wrap:wrap}.paper-folder-name{flex:calc(100% - 72px)}.paper-folder-count{text-align:left;margin-left:33px}.paper-file{grid-template-columns:39px minmax(0,1fr);display:grid}.paper-file-copy{overflow:hidden}.paper-file-actions{grid-column:1/-1;width:100%;margin:0}.paper-file-actions :is(button,a){text-align:center;flex:1}.countdown-values{gap:3px}.countdown-values strong{font-size:clamp(18px,6vw,27px)}.countdown-values span{font-size:6px}}@media (width<=760px) and (width>=561px){.deck-hero{grid-template-columns:1fr;gap:16px}.deck-hero-copy h1{font-size:clamp(48px,7vw,62px)}.deck-stage{min-height:clamp(230px,34vh,320px)}}@media (width<=560px){.deck-header{box-sizing:border-box;height:60px;min-height:60px;padding:8px 15px}.deck-page{scroll-snap-type:y proximity;scroll-padding-top:60px}.deck-slide{min-height:calc(100svh - 60px);padding:22px 16px}.deck-marquee{flex-wrap:wrap;justify-content:center;width:auto;left:0;right:0}.deck-page>.deck-slide{scroll-snap-stop:normal}.deck-hero{grid-template-columns:1fr;gap:14px;padding-bottom:66px}.deck-hero-copy h1{text-wrap:nowrap;max-width:none;margin:9px 0 12px;font-size:clamp(36px,8.5vw,46px);line-height:.95}.deck-hero-copy>p,.deck-section-head>p,.deck-problem-copy>p,.deck-tools-intro>p,.deck-proof-copy>p,.deck-contact>div>p{max-width:52ch;font-size:12px;line-height:1.35}.deck-actions{gap:12px;margin-top:16px}.deck-button{padding:11px 12px;font-size:8px}.deck-proof-line{margin-top:14px;font-size:8px}.deck-stage{min-height:clamp(205px,29svh,250px)}.deck-stage-label{font-size:7px;top:10px;left:12px}.deck-note-main{height:150px;min-height:0;padding:10px;bottom:28px}.deck-note-main strong{margin-top:12px;font-size:19px}.deck-note-main small{margin-top:6px;font-size:7px}.deck-note-photo{width:57px;height:77px}.deck-note-small{padding:9px;top:43px}.deck-note-small strong{margin-top:13px;font-size:13px}.deck-sticker{width:64px;height:64px;font-size:10px}.deck-stage-mark{font-size:24px;top:9px;right:10px}.deck-marquee{letter-spacing:.2px;gap:5px;min-height:42px;padding:8px 12px;font-size:6px}.deck-marquee svg{flex-basis:9px;width:9px;height:9px}.deck-problem{grid-template-columns:1fr;gap:11px}.deck-problem-label{border-right:0;border-bottom:1px solid var(--nd-ink);flex-direction:row;align-self:auto;align-items:center;padding:0 0 8px}.deck-side-number{font-size:16px}.deck-problem-copy h2,.deck-section-head h2,.deck-dont-title h2,.deck-tools-intro h2,.deck-proof-copy h2,.deck-contact h2{max-width:none;margin:8px 0 10px;font-size:clamp(33px,8vw,42px);line-height:.94}.deck-page :is(.deck-method,.deck-formats) .deck-section-head h2,.deck-page .deck-dont .deck-dont-title h2{line-height:1.1}.deck-problem-art{display:none}.deck-quote{margin-top:14px;padding-top:10px;font-size:17px}.deck-section-head{grid-template-columns:1fr;gap:5px}.deck-page .deck-card-grid,.deck-page .deck-format-grid,.deck-page .deck-card-grid{grid-template-columns:minmax(0,1fr);gap:10px;margin-top:14px}.deck-page .deck-card,.deck-page .deck-format{width:100%;min-width:0;min-height:180px;box-shadow:3px 3px 0 var(--nd-ink);border-width:2px;padding:14px}.deck-page .deck-card{width:100%;min-width:0;min-height:190px;box-shadow:3px 3px 0 var(--nd-ink);border-width:2px;padding:14px}.deck-card-number{font-size:17px}.deck-card-tag,.deck-format>span{letter-spacing:.2px;font-size:6px}.deck-page .deck-card h3{margin-bottom:6px;padding-top:15px;font-size:clamp(15px,4vw,19px)}.deck-page .deck-card p,.deck-page .deck-format p{margin-bottom:14px;padding-right:0;font-size:9px;line-height:1.25}.deck-format h3{font-size:clamp(15px,4vw,19px)}.deck-format button{margin-top:10px;font-size:7px}.deck-dont,.deck-proof{grid-template-columns:1fr;gap:12px}.deck-dont-list{padding-top:0}.deck-dont-list>div{grid-template-columns:24px 1fr;gap:8px;padding:7px 0;font-size:clamp(15px,4vw,19px)}.deck-dont-list>div span{font-size:8px}.deck-dont-list p{margin:9px 0 0 32px;font-size:10px}.deck-tools{grid-template-columns:1fr;gap:12px}.deck-tools-intro h2{max-width:none;font-size:clamp(36px,9vw,46px)}.deck-tool-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.deck-tool{min-height:clamp(175px,24svh,205px);box-shadow:3px 3px 0 var(--nd-ink);border-width:2px;gap:6px;padding:10px}.deck-tool .tool-icon{width:28px;height:28px;margin:0 0 auto}.deck-tool>span{letter-spacing:.2px;font-size:6px}.deck-tool strong{font-size:clamp(12px,3.5vw,16px);line-height:1}.deck-tool small{font-size:8px;line-height:1.2}.deck-tool>b{font-size:15px;bottom:5px;right:7px}.deck-proof-copy h2{margin-bottom:8px}.deck-proof-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:6px}.deck-proof-grid>div{border-top-width:2px;min-height:72px;padding-top:7px}.deck-proof-grid strong{font-size:34px}.deck-proof-grid span{font-size:7px}.deck-contact{gap:14px;padding-bottom:76px}.deck-contact-actions{gap:12px}.deck-contact-link{font-size:8px}.deck-page .deck-footer{grid-template-columns:1fr auto;gap:5px 9px;min-height:62px;padding:8px 12px;font-size:6px;display:grid}.deck-page .deck-footer .deck-brand{grid-column:1;margin:0}.deck-page .deck-footer>span{grid-column:1}.deck-page .deck-footer>div{grid-area:1/2/span 2;align-items:center;gap:8px;font-size:7px}}.deck-page .deck-proof{box-sizing:border-box;scroll-snap-align:start;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:center;gap:clamp(36px,5vw,76px);min-height:100svh;padding-block:clamp(34px,5vh,56px);scroll-margin-top:0}.deck-page .deck-proof-copy{min-width:0}.deck-page .deck-proof-copy h2{text-wrap:balance;max-width:14ch;margin:18px 0 24px;padding-block:.06em .1em;font-size:clamp(46px,5.2vw,76px);line-height:1.08;overflow:visible}.deck-page .deck-proof-copy>p{max-width:42ch;margin:0 0 20px;line-height:1.45}.deck-page .deck-proof-grid{align-self:center;gap:clamp(20px,3vw,38px);min-width:0}.deck-page .deck-proof-grid>div{min-height:clamp(125px,17vh,160px)}.deck-page .deck-proof-grid strong{padding-block:.04em .08em;line-height:1.04}@media (width<=900px){.deck-page .deck-proof{grid-template-columns:minmax(0,1fr);gap:28px;min-height:0}.deck-page .deck-proof-copy h2{max-width:14ch;font-size:clamp(44px,6.5vw,64px);line-height:1.08}.deck-page .deck-proof-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:0}}@media (width<=560px){.deck-page .deck-proof{gap:20px;padding-block:32px}.deck-page .deck-proof-copy h2{margin:12px 0 14px;font-size:clamp(38px,9vw,50px);line-height:1.08}.deck-page .deck-proof-copy>p{font-size:14px}.deck-page .deck-proof-grid{gap:16px 12px}.deck-page .deck-proof-grid>div{min-height:100px}.deck-page .deck-proof-grid strong{font-size:clamp(34px,9vw,48px)}}.deck-page .deck-method{justify-content:flex-start;padding-block:clamp(28px,4vh,44px)}.deck-page .deck-method .deck-card-grid{margin-top:clamp(18px,2.4vh,26px)}.deck-page .deck-method .deck-card{background:var(--nd-cream);grid-template-rows:auto auto auto;grid-template-columns:minmax(0,1fr) auto;align-content:start;gap:0;min-height:250px;padding:22px 22px 42px;transition:transform .2s cubic-bezier(.2,0,0,1),box-shadow .2s cubic-bezier(.2,0,0,1),background-color .2s;display:grid;transform:none}.deck-page :is(.deck-card,.deck-format,.deck-tool){background:var(--nd-cream);transition:transform .2s cubic-bezier(.2,0,0,1),box-shadow .2s cubic-bezier(.2,0,0,1),background-color .2s}.deck-page :is(.deck-card,.deck-format,.deck-tool):is(:hover,:focus-visible,:focus-within){background:var(--nd-lime)}.deck-page .deck-method .deck-card-number{grid-area:1/1;align-self:start}.deck-page .deck-method .deck-card-tag{grid-area:1/2;place-self:start end}.deck-page .deck-method .deck-card h3{grid-area:2/1/auto/-1;margin:34px 0 8px;padding:0;font-size:clamp(24px,2.2vw,31px);line-height:1}.deck-page .deck-method .deck-card p{grid-area:3/1/auto/-1;max-width:32ch;margin:0;padding-right:0;line-height:1.35}.deck-page .deck-method .deck-card:hover,.deck-page .deck-method .deck-card:focus-within{box-shadow:10px 10px 0 var(--nd-ink);transform:translate(-4px,-4px)}@media (width<=900px){.deck-page .deck-method .deck-card{min-height:230px;padding:16px}.deck-page .deck-method .deck-card h3{margin-top:24px}}@media (width<=560px){.deck-page .deck-method .deck-card{min-height:190px;padding:11px 10px}.deck-page .deck-method .deck-card h3{margin-top:18px;font-size:clamp(15px,4vw,19px)}.deck-page .deck-method .deck-card p{padding-right:0;font-size:9px;line-height:1.3}}@media (height<=700px) and (width>=561px){.deck-slide{padding-block:25px}.deck-hero{padding-bottom:83px}.deck-stage{min-height:300px}.deck-proof-line{margin-top:22px}.deck-page .deck-card,.deck-page .deck-format,.deck-tool{min-height:190px}.deck-card-grid,.deck-format-grid{margin-top:20px}.deck-tools-intro h2{font-size:56px}.deck-contact{padding-bottom:96px}}.deck-page .deck-contact{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr) minmax(340px,.82fr);align-content:stretch;align-items:center;gap:clamp(32px,6vw,88px);min-height:calc(100svh - 57px);padding:clamp(32px,4vh,48px) clamp(24px,8vw,130px) 112px;display:grid}.deck-page .deck-contact-copy{grid-area:1/1;min-width:0}.deck-page .deck-contact h2{text-wrap:balance;max-width:14ch;margin:18px 0 22px;padding-block:.06em .1em;font-size:clamp(48px,5.7vw,82px);line-height:1.08;overflow:visible}.deck-page .deck-contact-copy>p{max-width:48ch;line-height:1.5}.deck-page .deck-contact-actions{grid-area:1/2;gap:18px;width:100%;min-width:0}.deck-page .deck-contact-actions>.deck-button{min-height:54px}.deck-page .deck-social-links{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;width:100%;display:grid}.deck-page .deck-social-links a{box-sizing:border-box;border:2px solid var(--nd-ink);background:var(--nd-cream);min-width:0;min-height:46px;color:var(--nd-ink);box-shadow:3px 3px 0 var(--nd-ink);text-transform:uppercase;align-items:center;gap:8px;padding:8px 10px;font:700 9px/1.15 DM Mono,monospace;text-decoration:none;transition:transform .18s,background-color .18s,box-shadow .18s;display:flex}.deck-page .deck-social-links a svg{flex:0 0 17px;width:17px;height:17px}.deck-page .deck-social-links a span{text-overflow:ellipsis;overflow:hidden}.deck-page .deck-social-links a:hover,.deck-page .deck-social-links a:focus-visible{background:var(--nd-lime);color:var(--nd-ink);box-shadow:5px 5px 0 var(--nd-ink);transform:translate(-2px,-2px)}.deck-page .deck-social-links a:focus-visible{outline:3px solid var(--nd-ink);outline-offset:3px}.deck-page .deck-contact-link{color:var(--nd-ink);font-weight:700}.deck-page .deck-footer{box-sizing:border-box;background:var(--nd-ink);color:#f4eadb;letter-spacing:.4px;border-top:0;align-items:center;gap:25px;min-height:76px;padding:18px clamp(20px,8vw,130px);display:flex;position:absolute;bottom:0;left:0;right:0}.deck-page .deck-footer .deck-brand{margin-right:auto}.deck-page .deck-footer>span{color:#f4eadb;font-size:9px}.deck-page .deck-footer>div{gap:clamp(12px,2vw,26px)}.deck-page .deck-footer a{color:#fff}.deck-page .deck-footer a:hover{color:var(--nd-lime)}@media (width>=761px) and (width<=1200px){.deck-page .deck-contact{--contact-side-pad:clamp(24px, 8vw, 64px);min-height:0;padding:32px var(--contact-side-pad) 0;grid-template-rows:auto auto auto;align-content:start}.deck-page .deck-footer{width:calc(100% + var(--contact-side-pad) + var(--contact-side-pad));margin:8px calc(-1 * var(--contact-side-pad)) 0;grid-area:2/1/auto/-1;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px 18px;min-height:78px;padding:10px clamp(132px,23vw,178px) 10px 18px;display:grid;position:relative;inset:auto}.deck-page .deck-footer .deck-brand{grid-area:1/1;margin:0}.deck-page .deck-footer>span{grid-area:2/1/auto/-1;font-size:7px}.deck-page .deck-footer>div{flex-wrap:wrap;grid-area:1/2;justify-content:flex-end;justify-self:end;gap:8px clamp(10px,2vw,20px);font-size:8px}}@media (width>=761px) and (width<=900px){.deck-page .deck-footer{grid-row:3}}@media (width<=900px){.deck-page .deck-contact{grid-template-rows:auto auto;grid-template-columns:minmax(0,1fr);gap:22px;min-height:calc(100svh - 47px);padding-bottom:100px}.deck-page .deck-contact-copy{grid-area:1/1}.deck-page .deck-contact-actions{grid-area:2/1;justify-self:start;width:min(100%,560px)}.deck-page .deck-footer{grid-column:1}.deck-page .deck-contact h2{font-size:clamp(46px,7vw,68px)}}@media (width>=761px) and (width<=900px){.deck-page .deck-contact{min-height:0;padding:32px var(--contact-side-pad) 0;grid-template-rows:auto auto auto;align-content:start}}@media (width<=560px){.deck-page .deck-contact{gap:18px;min-height:calc(100svh - 39px);padding:26px 16px 88px}.deck-page .deck-contact h2{margin:12px 0 14px;font-size:clamp(38px,9vw,50px);line-height:1.08}.deck-page .deck-contact-actions{gap:14px}.deck-page .deck-social-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.deck-page .deck-social-links a{min-height:44px;padding:7px 8px;font-size:8px}.deck-page .deck-footer>span{font-size:6px}.deck-page .deck-footer{grid-template-columns:1fr auto;gap:5px 10px;min-height:62px;padding:8px 12px;font-size:6px;display:grid}.deck-page .deck-footer .deck-brand{grid-area:1/1}.deck-page .deck-footer>span{grid-area:2/1}.deck-page .deck-footer>div{flex-wrap:wrap;grid-area:1/2/span 2;justify-content:end;gap:8px 12px;font-size:7px}}@media (width<=760px){.deck-page .deck-contact{--contact-side-pad:clamp(16px, 4vw, 28px);min-height:0;padding:26px var(--contact-side-pad) 0;grid-template-rows:auto auto auto;align-content:start}.deck-page .deck-social-links{grid-template-columns:repeat(2,minmax(0,1fr))}.deck-page .deck-footer{width:calc(100% + var(--contact-side-pad) + var(--contact-side-pad));margin:6px calc(-1 * var(--contact-side-pad)) 0;grid-column:1;grid-template-columns:auto minmax(0,1fr);place-items:center start;gap:8px 12px;min-height:76px;padding:10px clamp(132px,23vw,178px) 10px 16px;font-size:6px;display:grid;position:relative;inset:auto}.deck-page .deck-footer .deck-brand{grid-area:1/1;margin:0}.deck-page .deck-footer>span{grid-area:2/1/auto/-1;font-size:6px}.deck-page .deck-footer>div{flex-wrap:wrap;grid-area:1/2;justify-content:flex-end;justify-self:end;gap:8px 10px;font-size:7px}}@media (width<=420px){.deck-page .deck-footer{grid-template-columns:minmax(0,1fr)}.deck-page .deck-footer .deck-brand{grid-area:1/1}.deck-page .deck-footer>span{grid-area:2/1}.deck-page .deck-footer>div{grid-area:3/1;justify-content:flex-start;justify-self:start}}@media (prefers-reduced-motion:reduce){.deck-page{scroll-behavior:auto;scroll-snap-type:y mandatory}.countdown-page main>section,.quiz-page main>section,.pastpapers-page main>section{animation:none}.deck-card,.deck-format,.deck-tool,.countdown-card,.quiz-choice,.question-card,.paper-browser-guide,.paper-folder-heading,.paper-file,.guide-steps>div,.paper-filter-row button{transition:none}}.deck-page :is(h1,h2,h3){line-height:1.08}.deck-page :is(p,li){line-height:1.42}.deck-note-main strong,.deck-note-small strong{line-height:1.08}.deck-note-main{box-sizing:border-box;width:min(72%,440px);height:42%;min-height:0;padding:4%;bottom:7%;left:4%;transform:rotate(-2deg)}.deck-note-main>span,.deck-note-small>span{font-size:clamp(8px,1.7cqw,10px)}.deck-note-main strong,.deck-note-main small{overflow-wrap:normal;word-break:normal;max-width:calc(66% - 8px)}.deck-note-main strong{margin-top:8%;font-size:clamp(19px,5.6cqw,32px);line-height:1.06}.deck-note-main small{margin-top:4%;font-size:clamp(7px,1.8cqw,10px);line-height:1.3}.deck-note-photo{width:28%;min-width:70px;max-width:118px;height:72%;max-height:190px;bottom:4%;right:4%}.deck-note-small{box-sizing:border-box;width:min(40%,220px);min-height:0;padding:3%;top:22%;right:4%;transform:rotate(2deg)}.deck-note-small strong{overflow-wrap:normal;word-break:normal;max-width:100%;margin-top:8%;font-size:clamp(15px,4.6cqw,24px);line-height:1.08}.deck-sticker{aspect-ratio:1;width:clamp(82px,18cqw,112px);height:auto;font-size:clamp(11px,2.8cqw,16px);line-height:.98;bottom:4%;right:3%}.deck-stage{aspect-ratio:1;box-sizing:border-box;justify-self:end;width:min(100%,68svh,620px);height:auto;min-height:0;container-type:inline-size}.countdown-page :is(h1,h2,h3),.quiz-page :is(h1,h2,h3),.pastpapers-page :is(h1,h2,h3),.paper-viewer-page :is(h1,h2,h3),.paper-result-page :is(h1,h2,h3),.auth-page :is(h1,h2,h3),.portal-page :is(h1,h2,h3){line-height:1.06}.countdown-page p,.quiz-page p,.pastpapers-page p,.paper-viewer-page p,.paper-result-page p,.auth-page p,.portal-page p{line-height:1.45}.countdown-card h2,.question-body h3,.paper-folder-name,.paper-file-copy strong,.auth-card :is(label,button),.portal-page :is(h2,h3){overflow-wrap:anywhere}@media (width<=900px){.deck-stage{aspect-ratio:1;width:min(100%,64svh,560px);min-height:0}}@media (width<=760px) and (width>=561px){.deck-stage{justify-self:center;width:min(100%,46svh,380px)}.deck-note-main{width:72%;height:44%;bottom:7%;left:4%}.deck-note-photo{min-width:62px}}@media (width<=560px){.deck-stage{justify-self:center;width:min(100%,47svh,360px)}.deck-note-main{width:72%;height:44%;padding:4%;bottom:7%;left:4%}.deck-note-main strong,.deck-note-main small{max-width:calc(68% - 6px)}.deck-note-main strong{font-size:clamp(17px,5.6cqw,22px)}.deck-note-photo{width:27%;min-width:54px;height:64%;max-height:138px;bottom:4%;right:4%}.deck-note-small{width:43%;min-height:0;padding:3%;top:20%;right:4%}.deck-note-small strong{margin-top:8%;font-size:clamp(13px,4.6cqw,19px)}.deck-sticker{width:clamp(64px,18cqw,90px)}}@media (height<=700px) and (width>=761px){.deck-stage{width:min(100%,60svh,430px)}}@media (height<=700px) and (width<=560px){.deck-stage{width:min(100%,42svh,280px)}}.deck-page .deck-tools{grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);align-items:center;gap:clamp(28px,4.5vw,72px)}.deck-page .deck-tools-intro h2{max-width:none;font-size:clamp(44px,4.5vw,76px);line-height:1.04}.deck-page .deck-tool-grid{grid-template-rows:repeat(2,minmax(0,1fr));grid-template-columns:repeat(2,minmax(0,1fr));align-self:stretch;gap:clamp(10px,1.2vw,18px);min-height:0;max-height:min(72vh,560px)}.deck-page .deck-tool{min-height:0;padding:clamp(15px,1.5vw,24px)}.deck-page .deck-tool .tool-icon{margin-bottom:auto}.deck-tool-blue{background:var(--nd-blue)}.deck-tool-upcoming{cursor:default}@media (width<=900px){.deck-page .deck-tools{grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:24px}.deck-page .deck-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=560px){.deck-page .deck-tools{grid-template-columns:1fr;gap:12px}.deck-page .deck-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.deck-page .deck-tool{min-height:178px;padding:12px}.deck-page .deck-tool strong{font-size:clamp(13px,3.8vw,16px)}.deck-page .deck-tool small{font-size:clamp(8px,2.4vw,10px)}}.deck-page .deck-problem{grid-template-columns:150px minmax(0,1.2fr) minmax(340px,.7fr);gap:clamp(24px,3vw,48px);padding-block:clamp(30px,4vh,50px)}.deck-page .deck-problem-copy h2{max-width:14ch;margin:10px 0 18px;font-size:clamp(48px,4.5vw,76px);line-height:1.04}.deck-page .deck-quote{margin-top:22px;font-size:clamp(18px,1.7vw,26px);line-height:1.08}.deck-page .deck-problem-photo{box-sizing:border-box;background:var(--nd-cream);width:100%;height:clamp(280px,40vh,360px);padding:0;display:block;position:relative;overflow:hidden}.deck-page .deck-problem-photo img{object-fit:cover;object-position:48% center;width:100%;height:100%;display:block}.deck-page .deck-problem-photo>span{border:2px solid var(--nd-ink);background:var(--nd-lime);color:var(--nd-ink);letter-spacing:.4px;padding:6px 8px;font:700 8px/1.2 DM Mono,monospace;position:absolute;bottom:9px;right:9px}@media (width<=900px){.deck-page .deck-problem{grid-template-columns:minmax(58px,.22fr) minmax(0,1fr) minmax(210px,.6fr);gap:20px}.deck-page .deck-problem-copy h2{font-size:clamp(42px,5.2vw,62px)}.deck-page .deck-problem-photo{height:clamp(250px,38vh,320px)}}@media (width<=560px){.deck-page .deck-problem{grid-template-columns:1fr}.deck-page .deck-problem-copy h2{max-width:none;margin:8px 0 10px;font-size:clamp(33px,8vw,42px);line-height:.98}.deck-page .deck-quote{margin-top:14px;font-size:17px;line-height:1.08}.deck-page .deck-problem-photo{justify-self:stretch;width:100%;max-width:none;height:clamp(175px,28svh,230px);display:block}}.pastpapers-page .paper-folder,.pastpapers-page .paper-folder:hover{box-shadow:none!important;background:0 0!important;outline:none!important}.pastpapers-page .paper-folder.depth-0,.pastpapers-page .paper-folder.depth-0:hover{border-radius:10px;border:2px solid var(--nd-ink)!important;box-shadow:5px 5px 0 var(--nd-ink)!important;background:#fffaf2!important}.pastpapers-page .paper-folder>.paper-folder-heading,.pastpapers-page .paper-folder>.paper-folder-heading:hover,.pastpapers-page .paper-folder>.paper-folder-heading:focus-visible{outline:none;color:var(--nd-ink)!important;background:0 0!important}.pastpapers-page .paper-folder.depth-0>.paper-folder-heading,.pastpapers-page .paper-folder.depth-0>.paper-folder-heading:hover,.pastpapers-page .paper-folder.depth-0>.paper-folder-heading:focus-visible{color:var(--nd-ink)!important;background:var(--nd-pink)!important}.pastpapers-page .paper-folder:not(.depth-0)>.paper-folder-heading:hover,.pastpapers-page .paper-folder:not(.depth-0)>.paper-folder-heading:focus-visible{color:var(--nd-ink)!important;background:#f8d3e0!important}.pastpapers-page .paper-folder>.paper-folder-heading :is(.paper-folder-name,.paper-folder-count,.paper-folder-chevron,.paper-folder-icon){color:inherit!important}.pastpapers-page .paper-folder.depth-2:before,.pastpapers-page .paper-folder.depth-3:before{display:none!important}.pastpapers-page .paper-folder.depth-1{border-left:0!important}.pastpapers-page .paper-folder-heading:focus-visible{box-shadow:inset 0 0 0 2px var(--nd-ink)}.pastpapers-page .paper-folder.depth-2>.paper-folder-heading,.pastpapers-page .paper-folder.depth-3>.paper-folder-heading{z-index:1;position:relative}.pastpapers-page .paper-file,.pastpapers-page .paper-file:hover,.pastpapers-page .paper-file:focus-within{z-index:auto;border:0;border-bottom:1px solid #dfd7ce;border-radius:0;position:relative;box-shadow:none!important;background:0 0!important;outline:none!important;transform:none!important}.pastpapers-page .paper-file:last-child{border-bottom:0}.pastpapers-page .paper-file:hover,.pastpapers-page .paper-file:focus-within{background:#fff0f5!important}.pastpapers-page .paper-file-icon{border:1px solid var(--nd-ink);background:var(--nd-pink);color:var(--nd-ink)}.pastpapers-page .pastpapers-hero-note{border-color:var(--nd-ink);background:var(--nd-ink);color:#fff}.pastpapers-page .pastpapers-hero-note>span{color:var(--nd-lime)}.pastpapers-page .pastpapers-hero-note>strong{color:#fff}.pastpapers-page .pastpapers-hero-note>strong small{color:var(--nd-pink)}.pastpapers-page .pastpapers-hero-note>i{color:#ff9cbd}.paper-result-report .paper-grading-score{border:2px solid var(--nd-ink);box-shadow:5px 5px 0 var(--nd-ink);color:var(--nd-ink);background:#fff3f7;border-radius:10px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px 20px;padding:18px 20px 16px;display:grid}.paper-result-report .paper-grading-score strong{color:var(--nd-ink);align-items:baseline;gap:8px;margin-top:8px;font:700 48px/.95 DM Mono,monospace;display:flex}.paper-result-report .paper-grading-score strong small{color:#45403e;font:600 15px DM Mono,monospace}.paper-result-report .paper-grading-score .section-kicker{color:#8f193e;letter-spacing:.08em;font:700 9px DM Mono,monospace}.paper-result-report .paper-grading-score .paper-grading-percentage{border:2px solid var(--nd-ink);background:var(--nd-lime);color:var(--nd-ink);border-radius:7px;padding:9px 12px;font:700 18px DM Mono,monospace}.paper-result-report .paper-grading-progress{border:2px solid var(--nd-ink);background:#e4dcd4;border-radius:99px;grid-column:1/-1;height:10px;overflow:hidden}.paper-result-report .paper-grading-progress span{border-radius:inherit;background:var(--nd-pink-deep);min-width:0;height:100%;transition:width .35s;display:block}.paper-result-report .paper-grading-summary,.paper-result-report .paper-grading-section h3,.paper-result-report .paper-grading-section ul,.paper-result-report .paper-mistake,.paper-result-report .paper-correct-answer,.paper-result-report .paper-mistake p,.paper-result-report .paper-correct-answer p,.paper-result-report .paper-correct-solution{color:#211f1d}.deck-page .deck-footer .deck-brand .math-talk-name,.deck-page .deck-footer .deck-brand .math-talk-name{color:#fff!important;opacity:1!important;visibility:visible!important}.deck-page .deck-footer .deck-brand .math-talk-name span{color:#ff4d45!important;opacity:1!important;visibility:visible!important}.paper-timer-panel.finished .paper-timer-status,.paper-timer-panel.finished .paper-duration label,.paper-timer-panel.finished .paper-timer-note{color:#211f1d}.paper-timer-panel.finished .paper-duration{border-top-color:#686900}.paper-timer-panel.finished .paper-duration input{border-color:var(--nd-ink);color:#fff;background:#25251f}.paper-timer-panel.finished .paper-presets button{color:#211f1d;background:#efff59;border-color:#484900}.paper-timer-panel.finished .paper-presets button:hover,.paper-timer-panel.finished .paper-presets button.selected{border-color:var(--nd-ink);background:var(--nd-pink);color:var(--nd-ink)}.paper-timer-panel.finished .paper-reset-button{border-color:var(--nd-ink);color:var(--nd-ink);background:0 0}.paper-timer-panel.finished .paper-reset-button:hover{border-color:var(--nd-ink);background:var(--nd-ink);color:var(--nd-lime)}.paper-timer-panel.finished .paper-timer-note{border-top-color:#686900}.portal-page{background-color:var(--nd-cream);background-image:radial-gradient(#05050513 1px,#0000 1px);background-size:14px 14px;min-height:100vh}.portal-header{z-index:2;border-bottom:3px solid var(--nd-ink);background:var(--nd-cream);gap:18px;height:76px;padding:0 clamp(20px,5vw,76px);position:relative}.portal-header .pastpapers-back{border:2px solid var(--nd-ink);min-height:40px;box-shadow:3px 3px 0 var(--nd-ink);white-space:nowrap;background:#fffaf2;border-radius:7px;align-items:center;padding:0 13px;font-size:9px;text-decoration:none;display:inline-flex}.portal-header .pastpapers-back:hover{background:var(--nd-pink);color:var(--nd-ink)}.portal-header .countdown-brand{position:absolute;left:50%;transform:translate(-50%)}.portal-header .math-talk-name{font-size:23px}.portal-header-actions{color:var(--nd-ink);gap:12px;margin-left:auto;font-size:9px}.portal-account{align-items:center;gap:9px;display:inline-flex}.portal-account>i{border:2px solid var(--nd-ink);background:var(--nd-pink);border-radius:50%;place-items:center;width:30px;height:30px;font-size:12px;font-style:normal;display:grid}.portal-account>span{text-overflow:ellipsis;white-space:nowrap;max-width:190px;overflow:hidden}.portal-header-actions button{border:2px solid var(--nd-ink);min-height:36px;color:var(--nd-ink);text-transform:uppercase;cursor:pointer;background:0 0;border-radius:6px;padding:0 12px;font:700 9px DM Mono,monospace}.portal-header-actions button:hover{background:var(--nd-ink);color:#fff}.portal-dashboard{width:min(1320px,100% - 64px);margin:0 auto;padding:32px 0 86px}.portal-hero{border:3px solid var(--nd-ink);background-color:var(--nd-pink);box-shadow:8px 8px 0 var(--nd-ink);background-image:radial-gradient(#0505051f 1px,#0000 1px);background-size:14px 14px;border-radius:14px;grid-template-columns:minmax(0,1.5fr) minmax(235px,.55fr);align-items:stretch;gap:clamp(28px,6vw,90px);padding:clamp(32px,5.5vw,76px);display:grid}.portal-welcome-copy{align-self:center}.portal-hero .section-kicker{letter-spacing:.1em;align-items:center;gap:8px;font-size:9px;display:flex}.portal-live-dot{border:1px solid var(--nd-ink);background:var(--nd-lime);border-radius:50%;width:8px;height:8px}.portal-kicker-divider{opacity:.55}.portal-hero h1{letter-spacing:-.025em;margin:23px 0 18px;font-size:clamp(52px,7.2vw,92px);line-height:1.08}.portal-hero h1 em{overflow-wrap:anywhere;-webkit-box-decoration-break:clone;box-decoration-break:clone;max-width:100%;font-style:normal}.portal-hero p{color:#2a2224;max-width:540px;margin:0;font:500 clamp(15px,1.4vw,18px)/1.5 Space Grotesk,sans-serif}.portal-hero-actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.portal-hero-actions button,.portal-empty-actions button{border:2px solid var(--nd-ink);min-height:45px;box-shadow:3px 3px 0 var(--nd-ink);text-transform:uppercase;cursor:pointer;border-radius:7px;padding:0 16px;font:700 10px DM Mono,monospace}.portal-action-primary{background:var(--nd-ink);color:#fff}.portal-action-primary:hover{background:var(--nd-lime);color:var(--nd-ink)}.portal-action-secondary{color:var(--nd-ink);background:#fffaf2}.portal-action-secondary:hover{background:var(--nd-lime)}.portal-hero-note{border:3px solid var(--nd-ink);background:var(--nd-ink);color:#fff;border-radius:9px;flex-direction:column;justify-content:space-between;align-self:stretch;min-height:220px;padding:19px;display:flex;box-shadow:5px 5px #0505054d}.portal-note-heading{color:var(--nd-lime);letter-spacing:.08em;justify-content:space-between;align-items:center;gap:8px;font:700 9px DM Mono,monospace;display:flex}.portal-note-mark{color:var(--nd-pink);font-size:23px}.portal-hero-note>strong{color:#fff;margin-top:auto;font:700 clamp(58px,6vw,78px)/.9 Impact,Arial Black,sans-serif}.portal-hero-note>p{color:#fff;margin:8px 0 19px;font-size:12px}.portal-note-bottom{color:#ddd3cb;border-top:1px solid #625b57;justify-content:space-between;gap:10px;padding-top:13px;font:700 8px DM Mono,monospace;display:flex}.portal-note-bottom b{color:var(--nd-pink);margin-left:5px;font-size:11px}.portal-overview,.portal-trend-section{margin-top:57px}.portal-section-heading{justify-content:space-between;align-items:end;gap:18px;margin-bottom:18px;display:flex}.portal-section-heading .section-kicker{color:#5c4e45;font-size:9px}.portal-section-heading h2{color:var(--nd-ink);text-transform:uppercase;margin:7px 0 0;font:700 clamp(28px,3.3vw,40px)/.98 Impact,Arial Narrow,sans-serif}.portal-section-aside{color:#625b55;padding-bottom:3px;font:10px DM Mono,monospace}.portal-metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;padding:0}.portal-metric{border:2px solid var(--nd-ink);min-height:158px;box-shadow:4px 4px 0 var(--nd-ink);border-radius:10px;flex-direction:column;justify-content:space-between;gap:12px;padding:17px 18px;transition:transform .16s,box-shadow .16s;display:flex;position:relative}.portal-metric:hover{box-shadow:6px 6px 0 var(--nd-ink);transform:translate(-2px,-2px)}.portal-metric-top{letter-spacing:.025em;text-transform:uppercase;justify-content:space-between;align-items:center;gap:9px;font:700 9px/1.3 DM Mono,monospace;display:flex}.portal-metric-index{border:1px solid;border-radius:50%;flex:none;place-items:center;width:24px;height:24px;font-size:8px;display:grid}.portal-metric strong{font:700 clamp(34px,4vw,48px)/.9 Impact,Arial Narrow,sans-serif}.portal-metric small{font:10px/1.35 DM Mono,monospace}.portal-metric.pink{background:var(--nd-pink);color:var(--nd-ink)}.portal-metric.ink{background:var(--nd-ink);color:#fff}.portal-metric.ink small{color:#e2d9d0}.portal-metric.paper{color:var(--nd-ink);background:#fffaf2}.portal-metric.lime{background:var(--nd-lime);color:var(--nd-ink)}.portal-trends{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:0}.portal-trend-card,.portal-activity,.portal-leaderboard{border:2px solid var(--nd-ink);min-width:0;box-shadow:4px 4px 0 var(--nd-ink);background:#fffaf2;border-radius:10px;padding:21px}.portal-card-heading{border-color:#d4c8bb;align-items:center;padding-bottom:13px}.portal-card-heading .section-kicker{color:#5c4e45;font-size:8px}.portal-card-heading h2{color:var(--nd-ink);text-transform:uppercase;margin:7px 0 0;font:700 clamp(22px,2.3vw,28px)/.98 Impact,Arial Narrow,sans-serif}.portal-card-heading>span{color:#514b47;text-align:right;text-transform:uppercase;font:8px DM Mono,monospace}.trend-bars{gap:9px;height:208px;padding-top:18px}.trend-bar-track{background:#eee5d9;border:1px solid #d1c8bd;border-radius:4px 4px 0 0;height:132px;overflow:hidden}.portal-trend-card:first-child .trend-bar-fill{background:var(--nd-pink-deep)}.portal-trend-card:nth-child(2) .trend-bar-fill{background:#171714}.trend-bar-item strong{color:var(--nd-ink);margin-top:7px;font:700 9px DM Mono,monospace}.trend-bar-item small{color:#514b47;font:8px DM Mono,monospace}.portal-empty{color:#514b47;text-align:center;text-transform:none;flex-direction:column;justify-content:center;align-items:center;min-height:150px;padding:22px;font:10px DM Mono,monospace;display:flex}.portal-empty-icon{color:var(--nd-pink-deep);font-size:25px}.portal-empty>strong{color:var(--nd-ink);text-transform:uppercase;margin-top:7px;font:700 18px Impact,Arial Narrow,sans-serif}.portal-empty>p{max-width:300px;margin:6px 0 0;font:11px/1.45 Space Grotesk,sans-serif}.portal-empty-actions{flex-wrap:wrap;justify-content:center;gap:9px;margin-top:15px;display:flex}.portal-empty-actions button{background:var(--nd-lime);min-height:35px;padding-inline:11px;font-size:8px}.portal-empty-actions button:hover{background:var(--nd-pink)}.portal-lower-grid{grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);align-items:start;gap:15px;margin-top:15px;display:grid}.portal-lower-grid .portal-activity,.portal-lower-grid .portal-leaderboard{margin:0}.portal-activity-list{flex-direction:column;display:flex}.portal-activity-row{border-color:#ded5ca;grid-template-columns:62px minmax(0,1fr) auto;gap:12px;padding:14px 0}.portal-activity-row strong{color:var(--nd-ink);text-transform:none;font:700 13px Space Grotesk,sans-serif}.portal-activity-row small{color:#514b47;text-transform:none;font:9px DM Mono,monospace}.portal-activity-row small i{color:var(--nd-pink-deep);font-style:normal}.portal-activity-row>b{color:var(--nd-ink);white-space:nowrap;font:700 13px DM Mono,monospace}.activity-type{border:1px solid var(--nd-ink);background:var(--nd-ink);color:#fff;border-radius:4px;font-size:8px}.activity-type.paper{background:var(--nd-pink);color:var(--nd-ink)}.portal-leaderboard{background:var(--nd-ink);color:#fff}.portal-leaderboard .portal-card-heading{border-color:#625b57}.portal-leaderboard .portal-card-heading .section-kicker,.portal-leaderboard .portal-card-heading h2{color:#fff}.portal-leaderboard .portal-card-heading>span{color:#e2d9d0}.leaderboard-row{border-color:#3d3936;grid-template-columns:28px 34px minmax(0,1fr) auto;gap:9px;padding:11px 0}.leaderboard-rank{color:#c9bfb6}.leaderboard-avatar{background:var(--nd-pink);width:30px;height:30px;color:var(--nd-ink);border:1px solid #fff;border-radius:50%}.leaderboard-student strong{color:#fff;text-transform:none;font:700 12px Space Grotesk,sans-serif}.leaderboard-student small{color:#d0c6bd;font:8px DM Mono,monospace}.leaderboard-row>b{color:var(--nd-lime);font:700 10px DM Mono,monospace}.leaderboard-row.current{background:var(--nd-pink);color:var(--nd-ink);border-radius:5px;margin:0 -10px;padding-inline:10px}.leaderboard-row.current .leaderboard-rank,.leaderboard-row.current .leaderboard-student strong,.leaderboard-row.current .leaderboard-student small,.leaderboard-row.current>b{color:var(--nd-ink)}.leaderboard-row.current .leaderboard-avatar{border-color:var(--nd-ink);background:var(--nd-ink);color:#fff}.leaderboard-you{color:#e2d9d0;border-color:#625b57;margin-top:12px}.leaderboard-you strong{color:var(--nd-lime)}.portal-action-upcoming:disabled{border-color:var(--nd-ink);color:#514b47;box-shadow:none;cursor:not-allowed;background:#d9d0c5}.portal-state{border:3px solid var(--nd-ink);width:min(700px,100% - 40px);min-height:260px;box-shadow:7px 7px 0 var(--nd-ink);color:var(--nd-ink);background:#fffaf2;border-radius:12px;margin:80px auto;font:700 11px DM Mono,monospace}.portal-error strong{color:#b51f35}.coming-soon-page{background-color:var(--nd-cream);min-height:100vh;color:var(--nd-ink);background-image:radial-gradient(#05050513 1px,#0000 1px);background-size:14px 14px;padding:0 0 60px}.coming-soon-header{border-bottom:3px solid var(--nd-ink);background:var(--nd-cream);justify-content:space-between;align-items:center;height:76px;padding:0 clamp(20px,5vw,76px);display:flex}.coming-soon-header .pastpapers-back{border:2px solid var(--nd-ink);min-height:40px;box-shadow:3px 3px 0 var(--nd-ink);text-transform:uppercase;cursor:pointer;background:#fffaf2;border-radius:7px;align-items:center;padding:0 13px;font:700 9px DM Mono,monospace;display:inline-flex}.coming-soon-header>.math-talk-lockup{position:absolute;left:50%;transform:translate(-50%)}.coming-soon-header .math-talk-name{font-size:23px}.coming-soon-header>span:last-child{color:#514b47;letter-spacing:.08em;font:700 9px DM Mono,monospace}.coming-soon-content{border:3px solid var(--nd-ink);background:var(--nd-pink);width:min(850px,100% - 40px);min-height:min(680px,100vh - 130px);box-shadow:8px 8px 0 var(--nd-ink);border-radius:13px;flex-direction:column;justify-content:center;align-items:flex-start;margin:35px auto 0;padding:clamp(28px,7vw,80px);display:flex}.coming-soon-content .section-kicker{font-size:9px}.coming-soon-stamp{border:2px solid var(--nd-ink);background:var(--nd-lime);box-shadow:3px 3px 0 var(--nd-ink);text-align:center;align-self:flex-end;margin-bottom:12px;padding:10px 13px;font:700 10px/1.15 DM Mono,monospace;transform:rotate(4deg)}.coming-soon-content h1{text-transform:uppercase;overflow-wrap:anywhere;max-width:100%;margin:7px 0 15px;font:700 clamp(45px,8vw,86px)/.98 Impact,Arial Narrow,sans-serif}.coming-soon-content h1 em{background:var(--nd-lime);color:var(--nd-ink);font-style:normal}.coming-soon-content p{color:#2a2224;max-width:540px;margin:0;font:500 16px/1.5 Space Grotesk,sans-serif}.coming-soon-action{border:2px solid var(--nd-ink);background:var(--nd-ink);min-height:45px;box-shadow:3px 3px 0 var(--nd-ink);color:#fff;text-transform:uppercase;cursor:pointer;border-radius:7px;margin-top:25px;padding:0 16px;font:700 10px DM Mono,monospace}.coming-soon-action:hover{background:var(--nd-lime);color:var(--nd-ink)}.booking-send-link{min-height:44px;color:var(--nd-ink);justify-content:center;align-items:center;margin:0 7px 0 0;padding:0 18px;text-decoration:none;display:inline-flex}.booking-done{border:2px solid var(--nd-ink);min-height:44px;color:var(--nd-ink);text-transform:uppercase;cursor:pointer;background:0 0;padding:0 18px;font:700 10px DM Mono,monospace}.booking-done:hover{background:var(--nd-ink);color:#fff}@media (width<=900px){.portal-dashboard{width:min(100% - 42px,760px)}.portal-hero{grid-template-columns:minmax(0,1fr) 210px;gap:24px;padding:34px}.portal-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.portal-lower-grid{grid-template-columns:1fr}}@media (width<=620px){.coming-soon-header{height:66px;padding-inline:14px}.coming-soon-header>.math-talk-lockup{margin-left:auto;position:static;transform:none}.coming-soon-header .math-talk-name{font-size:18px}.coming-soon-header>span:last-child{display:none}.coming-soon-content{min-height:calc(100svh - 110px);margin-top:16px;padding:24px 20px}.coming-soon-content h1{font-size:clamp(44px,13vw,64px)}.coming-soon-content p{font-size:14px}.booking-send-link{margin-bottom:10px}.booking-done{width:100%}.portal-header{justify-content:space-between;height:66px;padding-inline:14px}.portal-header .countdown-brand{margin:0 auto 0 0;position:static;transform:none}.portal-header .math-talk-name{font-size:18px}.portal-header .pastpapers-back{min-height:34px;padding-inline:8px;font-size:7px}.portal-header-actions{gap:7px;margin-left:auto}.portal-account>span{display:none}.portal-account>i{width:28px;height:28px}.portal-header-actions button{min-height:32px;padding-inline:8px;font-size:8px}.portal-dashboard{width:calc(100% - 28px);padding-top:18px}.portal-hero{grid-template-columns:1fr;gap:22px;padding:25px 20px 21px}.portal-hero h1{margin:17px 0 14px;font-size:clamp(49px,14vw,70px);line-height:1.06}.portal-hero p{font-size:14px}.portal-hero-actions{gap:9px;margin-top:20px}.portal-hero-actions button{min-height:41px;padding-inline:11px;font-size:8px}.portal-hero-note{min-height:165px;padding:14px}.portal-hero-note>strong{font-size:55px}.portal-overview,.portal-trend-section{margin-top:40px}.portal-section-heading{flex-direction:column;align-items:start;gap:7px;margin-bottom:13px}.portal-section-heading h2{font-size:30px}.portal-section-aside{font-size:8px}.portal-metrics{gap:9px}.portal-metric{gap:8px;min-height:139px;padding:12px}.portal-metric-top{align-items:start;font-size:8px}.portal-metric-index{width:21px;height:21px}.portal-metric strong{font-size:clamp(29px,9vw,39px)}.portal-metric small{font-size:8px}.portal-trends{grid-template-columns:1fr;gap:11px}.portal-trend-card,.portal-activity,.portal-leaderboard{padding:15px}.portal-card-heading h2{font-size:23px}.trend-bars{height:185px}.trend-bar-track{height:112px}.portal-lower-grid{gap:11px;margin-top:11px}.portal-activity-row{grid-template-columns:52px minmax(0,1fr) auto;gap:8px}.portal-activity-row strong{font-size:11px}.portal-activity-row small{font-size:7px}.portal-activity-row>b{font-size:10px}.leaderboard-row{grid-template-columns:24px 30px minmax(0,1fr) auto;gap:7px}.leaderboard-student strong{font-size:10px}.leaderboard-student small{font-size:7px}.leaderboard-row>b{font-size:8px}}@media (width>=1201px){.deck-page .deck-footer{padding-right:max(180px,9vw)}}@media (width>=561px) and (width<=900px){.deck-page .deck-tools-intro h2{overflow-wrap:normal;font-size:clamp(30px,5vw,40px)}}