:root {
  --ink: #f4f0e8;
  --muted: #a5aaa9;
  --line: rgba(244, 240, 232, .16);
  --night: #101416;
  --panel: #171d20;
  --panel-2: #20282a;
  --teal: #68d4c0;
  --blue: #7aa9ff;
  --violet: #a992ff;
  --orange: #ffab68;
  --max: 1240px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--night);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 75% 7%, rgba(80, 130, 144, .16), transparent 31rem), var(--night); line-height: 1.5; }
a { color: inherit; text-decoration: none; }
.section-shell { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; }
.site-header { height: 82px; width: min(calc(100% - 64px), 1380px); margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 32px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: #0e2223; background: var(--teal); font-size: 11px; letter-spacing: -.06em; }
nav { display: flex; gap: 30px; color: var(--muted); font-size: 14px; }
nav a:hover, .header-link:hover, .text-link:hover { color: var(--ink); }
.header-link { color: var(--teal); font-size: 14px; font-weight: 650; }
.hero { min-height: 760px; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 70px; padding: 92px 0 120px; }
.eyebrow { margin: 0 0 18px; color: var(--teal); font-size: 12px; font-weight: 750; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 620px; margin-bottom: 28px; font-size: clamp(52px, 6vw, 90px); line-height: .95; letter-spacing: -.075em; }
h1 em, h2 em { color: var(--teal); font-style: normal; }
.hero-lede { max-width: 480px; color: var(--muted); font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; gap: 25px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; gap: 18px; padding: 15px 20px; border-radius: 100px; font-size: 14px; font-weight: 750; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #102021; background: var(--teal); }
.button-primary:hover { background: #8ce4d3; }
.text-link { color: var(--ink); font-size: 14px; font-weight: 700; }
.availability { margin: 28px 0 0; color: var(--muted); font-size: 13px; }
.availability span { margin-right: 9px; padding: 5px 8px; border: 1px solid rgba(104,212,192,.32); border-radius: 999px; color: var(--teal); font-size: 10px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.hero-art { position: relative; min-width: 0; overflow: hidden; padding: 0 0 14px; border: 1px solid rgba(244, 240, 232, .2); border-radius: 19px; background: rgba(20, 27, 29, .85); box-shadow: 0 30px 90px rgba(0,0,0,.32); transform: rotate(1deg); }
.hero-art-image { padding: 0; background: #1d1d1d; }
.hero-art-image img { display: block; width: 100%; height: auto; }
.window-chrome { display: flex; align-items: center; gap: 7px; height: 43px; padding: 0 16px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.window-chrome span { width: 8px; height: 8px; border-radius: 50%; background: #ee8c77; }.window-chrome span:nth-child(2) { background: #edc66e; }.window-chrome span:nth-child(3) { background: var(--teal); }.window-chrome b { margin-left: 12px; font-weight: 600; }
.planner-toolbar { display: flex; align-items: center; gap: 10px; padding: 17px 18px 13px; color: var(--muted); font-size: 10px; }.planner-toolbar i { width: 8px; height: 8px; border-radius: 3px; background: var(--teal); }.planner-toolbar strong { color: var(--ink); }.planner-toolbar small { margin-left: auto; padding: 5px 8px; border-radius: 5px; color: #111c1e; background: var(--teal); font-weight: 700; }
.planner-days, .planner-row { display: grid; grid-template-columns: 118px repeat(5, minmax(112px, 1fr)); gap: 7px; padding-inline: 14px; }.planner-days { padding-bottom: 9px; color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .09em; }.planner-days b:not(:first-child) { padding-left: 9px; }
.planner-row { margin-bottom: 7px; }.subject-card, .lesson-card { min-height: 118px; padding: 11px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.035); }.subject-card { display: flex; flex-direction: column; gap: 7px; }.subject-card b { font-size: 9px; }.subject-card strong { font-size: 13px; line-height: 1.12; }.subject-card small { margin-top: auto; color: var(--muted); font-size: 8px; }.mint { color: var(--teal); background: rgba(104,212,192,.09); border-color: rgba(104,212,192,.38); }.violet { color: var(--violet); background: rgba(169,146,255,.1); border-color: rgba(169,146,255,.38); }.lesson-card { position: relative; }.lesson-card.active { border-color: var(--blue); box-shadow: inset 0 0 0 1px rgba(122,169,255,.25); }.lesson-card small { display: block; color: var(--muted); font-size: 8px; font-weight: 750; }.lesson-card strong { display: block; margin-top: 5px; color: var(--ink); font-size: 12px; line-height: 1.1; }.lesson-card p { margin: 16px 0 0; color: var(--muted); font-size: 9px; line-height: 1.3; }.lesson-card em { position: absolute; bottom: 9px; left: 11px; padding: 3px 5px; border-radius: 4px; color: var(--teal); background: rgba(104,212,192,.14); font-size: 8px; font-style: normal; }.lesson-card.active em { color: var(--violet); background: rgba(169,146,255,.14); }.art-glow { position: absolute; z-index: -1; width: 200px; height: 200px; right: -40px; bottom: -90px; border-radius: 50%; background: var(--teal); filter: blur(70px); opacity: .16; }
.studio { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; padding: 120px 0 150px; }.section-intro h2, .feature-band h2, .roadmap h2, .closing h2 { margin-bottom: 24px; font-size: clamp(42px, 5vw, 68px); line-height: .98; letter-spacing: -.06em; }.section-intro > p { max-width: 480px; color: var(--muted); font-size: 17px; line-height: 1.7; }.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: end; }.principles article { min-height: 270px; padding-top: 22px; border-top: 1px solid var(--line); }.number { color: var(--teal); font-size: 12px; font-weight: 750; }.principles h3 { margin: 65px 0 13px; font-size: 19px; letter-spacing: -.03em; }.principles p { color: var(--muted); font-size: 14px; line-height: 1.6; }
.feature-band { border-block: 1px solid var(--line); background: var(--panel); }.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 120px; padding: 110px 0; }.feature-band h2 { max-width: 510px; font-size: clamp(36px, 4.2vw, 58px); }.feature-list { display: grid; gap: 30px; }.feature-list > div { display: grid; grid-template-columns: 42px 1fr; gap: 18px; border-bottom: 1px solid var(--line); }.feature-list span { color: var(--teal); font-size: 25px; }.feature-list p { color: var(--muted); font-size: 15px; line-height: 1.55; }.feature-list strong { color: var(--ink); }
.math-workspace { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; padding: 145px 0 120px; }.math-intro h2 { margin-bottom: 25px; font-size: clamp(42px, 5vw, 68px); line-height: .98; letter-spacing: -.06em; }.math-intro > p:not(.eyebrow) { max-width: 490px; color: var(--muted); font-size: 17px; line-height: 1.7; }.math-intro > p + p { margin-top: -4px; }.math-details { display: grid; align-content: center; gap: 0; padding: 14px 0; border-block: 1px solid var(--line); }.math-details article { display: grid; grid-template-columns: 45px 1fr; gap: 15px; padding: 25px 0; border-bottom: 1px solid var(--line); }.math-details article:last-child { border-bottom: 0; }.math-details .number { grid-row: span 2; }.math-details h3 { margin: 0 0 7px; font-size: 20px; letter-spacing: -.03em; }.math-details p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.whiteboard { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; padding: 145px 0 120px; }.whiteboard-intro h2 { margin-bottom: 25px; font-size: clamp(42px, 5vw, 68px); line-height: .98; letter-spacing: -.06em; }.whiteboard-intro > p:not(.eyebrow) { max-width: 490px; color: var(--muted); font-size: 17px; line-height: 1.7; }.whiteboard-intro > p + p { margin-top: -4px; }.whiteboard-details { display: grid; align-content: center; gap: 0; padding: 14px 0; border-block: 1px solid var(--line); }.whiteboard-details article { display: grid; grid-template-columns: 45px 1fr; gap: 15px; padding: 25px 0; border-bottom: 1px solid var(--line); }.whiteboard-details article:last-child { border-bottom: 0; }.whiteboard-details .number { grid-row: span 2; }.whiteboard-details h3 { margin: 0 0 7px; font-size: 20px; letter-spacing: -.03em; }.whiteboard-details p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }.whiteboard-module { border-color: rgba(122,169,255,.42); }.whiteboard-module > p:not(.status) { min-height: 98px; }
.modules { padding: 145px 0; }.split-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: end; margin-bottom: 70px; }.module-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }.module-card { min-height: 280px; padding: 26px; border: 1px solid var(--line); border-radius: 15px; background: linear-gradient(140deg, rgba(255,255,255,.055), rgba(255,255,255,.015)); transition: border-color .2s ease, transform .2s ease; }.module-card:hover { transform: translateY(-4px); border-color: rgba(104,212,192,.55); }.module-card.featured { border-color: rgba(104,212,192,.48); background: linear-gradient(140deg, rgba(104,212,192,.13), rgba(255,255,255,.025)); }.module-icon { display: grid; place-items: center; width: 39px; height: 39px; margin-bottom: 31px; border-radius: 11px; color: var(--night); background: var(--teal); font-size: 18px; font-weight: 800; }.module-card:nth-child(2) .module-icon, .module-card:nth-child(4) .module-icon { color: #111321; background: var(--violet); }.module-card:nth-child(3) .module-icon { color: #2b1b0f; background: var(--orange); }.module-card:nth-child(5) .module-icon { color: #10202a; background: var(--blue); }.status { margin-bottom: 7px; color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }.module-card h3 { margin-bottom: 13px; font-size: 23px; letter-spacing: -.04em; }.module-card > p:not(.status) { min-height: 76px; color: var(--muted); font-size: 14px; line-height: 1.55; }.math-module > p:not(.status) { min-height: 98px; }.whiteboard-module > p:not(.status) { min-height: 98px; }.module-card a { color: var(--teal); font-size: 13px; font-weight: 750; }
.roadmap { padding-bottom: 150px; }.roadmap-card { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; padding: 75px; border: 1px solid rgba(104,212,192,.38); border-radius: 18px; background: radial-gradient(circle at 90% 10%, rgba(104,212,192,.12), transparent 30rem), var(--panel); }.roadmap-card > div > p:last-child { max-width: 450px; color: var(--muted); font-size: 16px; line-height: 1.65; }.roadmap ol { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }.roadmap li { display: grid; grid-template-columns: 50px 1fr; gap: 14px; padding: 22px 0; border-bottom: 1px solid var(--line); }.roadmap li:first-child { padding-top: 0; }.roadmap li > span { color: var(--teal); font-size: 12px; font-weight: 750; }.roadmap li strong { display: block; margin-bottom: 4px; font-size: 20px; }.roadmap li small { color: var(--muted); font-size: 14px; }
.seo-guides { padding: 30px 0 145px; }.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }.guide-card { min-height: 250px; display: flex; flex-direction: column; padding: 25px; border: 1px solid var(--line); border-radius: 15px; background: linear-gradient(140deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); transition: border-color .2s ease, transform .2s ease; }.guide-card:hover { transform: translateY(-4px); border-color: rgba(104,212,192,.55); }.guide-card:nth-child(2) { background: linear-gradient(140deg, rgba(122,169,255,.10), rgba(255,255,255,.015)); }.guide-card:nth-child(3) { background: linear-gradient(140deg, rgba(169,146,255,.10), rgba(255,255,255,.015)); }.guide-card:nth-child(4) { background: linear-gradient(140deg, rgba(255,171,104,.10), rgba(255,255,255,.015)); }.guide-card:nth-child(5) { background: linear-gradient(140deg, rgba(104,212,192,.09), rgba(255,255,255,.015)); }.guide-kicker { color: var(--muted); font-size: 10px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }.guide-card h3 { margin: 48px 0 12px; font-size: 24px; letter-spacing: -.045em; }.guide-card p { margin-bottom: 22px; color: var(--muted); font-size: 14px; line-height: 1.58; }.guide-arrow { margin-top: auto; color: var(--teal); font-size: 13px; font-weight: 750; }.download-note { max-width: 480px; margin: -4px auto 28px; color: var(--muted); font-size: 14px; }.download-note strong { color: var(--ink); }
.site-footer { display: flex; justify-content: space-between; gap: 20px; padding: 24px 0 30px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }.site-footer a { color: var(--teal); }
.seo-main { padding-bottom: 120px; }.seo-hero { display: grid; grid-template-columns: .86fr 1.14fr; align-items: center; gap: 90px; padding: 105px 0 120px; }.seo-hero h1 { max-width: 640px; margin-bottom: 26px; font-size: clamp(48px, 6.3vw, 82px); }.seo-hero-copy > p:not(.eyebrow) { max-width: 540px; color: var(--muted); font-size: 18px; line-height: 1.7; }.seo-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 34px; }.seo-status { max-width: 520px; margin: 21px 0 0; color: var(--muted); font-size: 13px; }.seo-status strong { color: var(--ink); }.seo-section { padding: 110px 0; border-top: 1px solid var(--line); }.seo-section h2 { max-width: 720px; margin-bottom: 22px; font-size: clamp(36px, 4.5vw, 58px); line-height: 1; letter-spacing: -.06em; }.seo-section > p { max-width: 680px; color: var(--muted); font-size: 17px; line-height: 1.72; }.seo-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 55px; }.seo-feature { min-height: 220px; padding: 24px; border: 1px solid var(--line); border-radius: 15px; background: linear-gradient(145deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); }.seo-feature .number { display: block; margin-bottom: 45px; }.seo-feature h3 { margin-bottom: 10px; font-size: 20px; letter-spacing: -.03em; }.seo-feature p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }.seo-workflow { display: grid; grid-template-columns: .86fr 1.14fr; gap: 90px; align-items: start; }.seo-workflow h2 { margin-bottom: 18px; }.workflow-list { display: grid; gap: 0; border-block: 1px solid var(--line); }.workflow-step { display: grid; grid-template-columns: 48px 1fr; gap: 14px; padding: 23px 0; border-bottom: 1px solid var(--line); }.workflow-step:last-child { border-bottom: 0; }.workflow-step > span { color: var(--teal); font-size: 12px; font-weight: 750; }.workflow-step h3 { margin: 0 0 6px; font-size: 19px; }.workflow-step p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }.seo-callout { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 40px; margin-top: 60px; padding: 30px; border: 1px solid rgba(104,212,192,.35); border-radius: 15px; background: rgba(104,212,192,.08); }.seo-callout h3 { margin-bottom: 8px; font-size: 21px; }.seo-callout p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }.seo-callout .button { white-space: nowrap; }.seo-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 45px; }.seo-links a { padding: 9px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 13px; }.seo-links a:hover { border-color: rgba(104,212,192,.55); color: var(--ink); }.requirements { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 45px; }.requirement { padding: 22px; border-top: 1px solid var(--teal); background: rgba(255,255,255,.035); }.requirement strong { display: block; margin-bottom: 7px; color: var(--ink); font-size: 14px; }.requirement span { color: var(--muted); font-size: 14px; line-height: 1.5; }
.product-preview { position: relative; overflow: hidden; min-height: 370px; padding: 0 0 18px; border: 1px solid rgba(244,240,232,.2); border-radius: 18px; background: rgba(20,27,29,.9); box-shadow: 0 30px 90px rgba(0,0,0,.28); }.preview-chrome { display: flex; align-items: center; gap: 7px; height: 42px; padding: 0 15px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; }.preview-chrome i { width: 8px; height: 8px; border-radius: 50%; background: #ee8c77; }.preview-chrome i:nth-child(2) { background: #edc66e; }.preview-chrome i:nth-child(3) { background: var(--teal); }.preview-chrome strong { margin-left: 10px; color: var(--ink); font-weight: 600; }.preview-toolbar { display: flex; align-items: center; gap: 10px; padding: 18px 20px 12px; color: var(--muted); font-size: 11px; }.preview-toolbar b { color: var(--ink); }.preview-toolbar small { margin-left: auto; padding: 5px 8px; border-radius: 5px; color: #111c1e; background: var(--teal); font-size: 9px; font-weight: 750; }.preview-grid { display: grid; grid-template-columns: 90px repeat(5, 1fr); gap: 6px; padding: 0 14px; }.preview-grid > span { min-height: 70px; padding: 9px; border: 1px solid var(--line); border-radius: 7px; color: var(--muted); font-size: 9px; }.preview-grid > span:nth-child(6n + 1) { color: var(--teal); background: rgba(104,212,192,.08); }.preview-grid > span:nth-child(6n + 3) { border-color: rgba(122,169,255,.5); color: var(--ink); }.preview-grid strong { display: block; margin-bottom: 7px; color: var(--ink); font-size: 10px; }.preview-grid em { display: block; margin-top: 8px; color: var(--teal); font-size: 8px; font-style: normal; }.preview-whiteboard { display: grid; grid-template-columns: 145px 1fr; gap: 10px; padding: 18px; }.preview-sidebar { padding: 12px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.035); }.preview-sidebar b { display: block; margin-bottom: 12px; color: var(--ink); font-size: 11px; }.preview-sidebar span { display: block; padding: 7px 8px; border-radius: 5px; color: var(--muted); font-size: 9px; }.preview-sidebar span.active { color: var(--ink); background: rgba(104,212,192,.13); }.preview-board { position: relative; min-height: 285px; overflow: hidden; padding: 18px; border-radius: 9px; color: #172326; background: #f4f0e8; }.preview-board::before { position: absolute; inset: 0; background-image: linear-gradient(rgba(28,73,76,.11) 1px, transparent 1px), linear-gradient(90deg, rgba(28,73,76,.11) 1px, transparent 1px); background-size: 24px 24px; content: ""; }.preview-board p, .preview-board strong { position: relative; z-index: 1; }.preview-board strong { display: block; font-size: 16px; }.preview-board p { max-width: 210px; margin-top: 68px; color: #155c61; font-size: 30px; font-weight: 650; letter-spacing: -.08em; transform: rotate(-4deg); }.preview-board small { position: absolute; right: 15px; bottom: 12px; color: #6d7675; font-size: 9px; }.preview-present { display: grid; grid-template-columns: 1fr 1.15fr; gap: 9px; padding: 18px; }.present-panel { min-height: 255px; padding: 13px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.04); }.present-panel.highlight { border-color: rgba(122,169,255,.62); background: rgba(122,169,255,.1); }.present-panel small { display: block; margin-bottom: 14px; color: var(--muted); font-size: 9px; font-weight: 750; text-transform: uppercase; }.present-panel h3 { margin-bottom: 9px; color: var(--ink); font-size: 18px; }.present-panel p { color: var(--muted); font-size: 11px; line-height: 1.5; }.present-panel ul { margin: 24px 0 0; padding-left: 16px; color: var(--muted); font-size: 10px; line-height: 1.8; }.preview-math { display: grid; grid-template-columns: 1fr 1.1fr; gap: 10px; padding: 18px; }.math-panel, .code-panel { min-height: 270px; padding: 15px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.035); }.math-panel small, .code-panel small { display: block; margin-bottom: 25px; color: var(--muted); font-size: 9px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }.equation { margin: 32px 0; color: var(--ink); font-size: 25px; letter-spacing: -.04em; }.step { margin: 9px 0; padding: 7px 9px; border-radius: 5px; color: var(--muted); background: rgba(104,212,192,.08); font-size: 10px; }.code-line { margin: 10px 0; color: #c5bafc; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px; }.code-line span { color: var(--teal); }.preview-caption { margin: 15px 18px 0; color: var(--muted); font-size: 11px; }
.product-preview-image { min-height: 0; padding: 0; background: #1d1d1d; }
.product-preview-image img { display: block; width: 100%; height: auto; }
.product-preview-image .preview-caption { margin: 0; padding: 15px 18px 0; }
@media (max-width: 1000px) { .hero { grid-template-columns: 1fr; padding-top: 70px; }.hero-art { max-width: 850px; width: 100%; margin: auto; }.studio, .feature-grid, .math-workspace, .whiteboard { grid-template-columns: 1fr; gap: 55px; }.split-intro, .roadmap-card { grid-template-columns: 1fr; gap: 45px; }.module-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 1000px) { .guide-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 1000px) { .seo-hero, .seo-workflow { grid-template-columns: 1fr; gap: 55px; }.seo-feature-grid, .requirements { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .section-shell, .site-header { width: min(calc(100% - 36px), var(--max)); }.site-header { height: 70px; }.site-header nav { display: none; }.header-link { margin-left: auto; }.hero { min-height: 0; padding: 72px 0 95px; }.hero-actions { align-items: flex-start; flex-direction: column; }.planner-days, .planner-row { grid-template-columns: 88px repeat(5, 150px); }.hero-art { overflow-x: auto; }.planner-toolbar, .planner-days, .planner-row { width: 1020px; }.principles, .module-grid, .guide-grid, .seo-feature-grid, .requirements { grid-template-columns: 1fr; }.principles article { min-height: 0; padding-bottom: 24px; }.principles h3 { margin-top: 25px; }.feature-grid, .modules, .studio, .math-workspace, .whiteboard, .seo-guides, .seo-section { padding-block: 90px; }.roadmap-card { padding: 36px 24px; }.site-footer { flex-wrap: wrap; }.site-footer span:nth-child(2) { display: none; }.seo-hero { padding-block: 75px 90px; }.seo-callout { grid-template-columns: 1fr; }.product-preview { min-height: 0; }.preview-grid { min-width: 740px; }.product-preview:has(.preview-grid) { overflow-x: auto; }.preview-whiteboard, .preview-present, .preview-math { grid-template-columns: 1fr; }.preview-board { min-height: 230px; }.preview-math { min-width: 430px; }.product-preview:has(.preview-math) { overflow-x: auto; } }

/* Keep real app captures grounded in the page instead of treating them like decorative mockups. */
.hero-art-image { padding: 14px; background: linear-gradient(145deg, #20282a, #121719); transform: none; }
.hero-art-image img { border: 1px solid rgba(244, 240, 232, .14); border-radius: 12px; box-shadow: 0 18px 45px rgba(0, 0, 0, .34); }
.seo-hero > *, .seo-hero-copy, .product-preview { min-width: 0; }
.product-preview { margin: 0; }
.product-preview-image { padding: 16px 16px 15px; background: linear-gradient(145deg, #20282a, #121719); }
.product-preview-image img { display: block; max-width: 100%; border: 1px solid rgba(244, 240, 232, .14); border-radius: 12px; box-shadow: 0 18px 45px rgba(0, 0, 0, .34); }
.product-preview-image .preview-caption { margin: 12px 2px 0; padding: 0; }
@media (max-width: 640px) { body { overflow-x: hidden; }.hero-art-image, .product-preview-image { padding: 10px; }.seo-hero { display: flex; flex-direction: column; align-items: stretch; overflow: hidden; }.seo-hero-copy, .product-preview { width: 100%; }.seo-hero h1, .seo-hero-copy > p:not(.eyebrow) { max-width: 100%; }.seo-hero h1 { font-size: clamp(44px, 12vw, 60px); }.seo-actions .text-link { flex-basis: 100%; }.product-preview-image .preview-caption { margin-top: 10px; } }