:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-soft: #f0f2ff;
  --surface-dark: #101827;
  --text: #121827;
  --muted: #667085;
  --line: #e4e7ec;
  --primary: #5b5cf0;
  --primary-2: #7c64f6;
  --primary-dark: #4446cb;
  --mint: #c9f8e5;
  --yellow: #fff1b8;
  --pink: #ffd7e5;
  --blue: #ddebff;
  --radius-sm: 14px;
  --radius: 22px;
  --radius-lg: 32px;
  --shadow-sm: 0 8px 24px rgba(16, 24, 39, .06);
  --shadow: 0 24px 60px rgba(16, 24, 39, .10);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
img, svg { display: block; }
svg { width: 1.2em; height: 1.2em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.container { width: min(calc(100% - 32px), var(--container)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 247, 251, .88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(228, 231, 236, .8);
}
.nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 850; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 39px; height: 39px; border-radius: 13px; background: var(--surface-dark); color: white; font-size: .9rem; letter-spacing: -.04em; box-shadow: 0 6px 16px rgba(16,24,39,.14); }
.brand-text { font-size: 1.08rem; }
.main-nav { display: flex; align-items: center; gap: 24px; color: #475467; font-weight: 650; font-size: .94rem; }
.main-nav a { transition: color .18s ease; }
.main-nav a:hover { color: var(--primary); }
.nav-cta { display: inline-flex; align-items: center; gap: 8px; padding: 10px 15px; border-radius: 999px; background: var(--surface-dark); color: white !important; }
.nav-cta svg { width: 16px; height: 16px; }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 9px; border: 1px solid var(--line); background: white; border-radius: 12px; }
.nav-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; border-radius: 999px; background: var(--surface-dark); }

.hero { background: transparent; }
.hero-v2 { position: relative; padding: 70px 0 64px; overflow: hidden; }
.hero-v2::before,
.hero-v2::after { content: ""; position: absolute; border-radius: 999px; filter: blur(2px); pointer-events: none; }
.hero-v2::before { width: 420px; height: 420px; right: -120px; top: -190px; background: rgba(124,100,246,.12); }
.hero-v2::after { width: 280px; height: 280px; left: -150px; bottom: -120px; background: rgba(201,248,229,.28); }
.hero-v2-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(360px, .68fr); gap: 58px; align-items: center; }
.hero-main { min-width: 0; }
.hero-kicker { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px; padding: 8px 12px; background: white; border: 1px solid var(--line); border-radius: 999px; color: #475467; font-size: .82rem; font-weight: 750; box-shadow: var(--shadow-sm); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #19b36b; box-shadow: 0 0 0 4px rgba(25,179,107,.12); }
h1, h2, h3 { margin-top: 0; line-height: 1.08; }
h1 { margin-bottom: 22px; font-size: clamp(3rem, 6.1vw, 5.8rem); letter-spacing: -.065em; max-width: 920px; }
h1 span { color: var(--primary); }
h2 { margin-bottom: 16px; font-size: clamp(2rem, 4vw, 3.55rem); letter-spacing: -.045em; }
h3 { font-size: 1.16rem; letter-spacing: -.02em; }
.hero-copy { max-width: 720px; margin: 0 0 30px; color: #475467; font-size: clamp(1.05rem, 1.7vw, 1.28rem); }

.need-box { max-width: 800px; padding: 20px; border-radius: 24px; background: white; border: 1px solid #dddff8; box-shadow: var(--shadow); }
.need-box > label { display: block; margin: 0 0 10px 3px; font-weight: 800; font-size: .94rem; }
.need-input-wrap { display: grid; grid-template-columns: 1fr 48px; gap: 9px; padding: 6px; border: 1px solid var(--line); border-radius: 16px; background: #f9fafb; transition: border-color .18s ease, box-shadow .18s ease; }
.need-input-wrap:focus-within { border-color: #a9a9fa; box-shadow: 0 0 0 4px rgba(91,92,240,.08); }
.need-input-wrap input { width: 100%; min-width: 0; height: 46px; padding: 0 10px; border: 0; outline: 0; background: transparent; color: var(--text); }
.need-input-wrap input::placeholder { color: #98a2b3; }
.need-submit { display: grid; place-items: center; width: 48px; height: 46px; border: 0; border-radius: 12px; background: var(--primary); color: white; cursor: pointer; transition: transform .18s ease, background .18s ease; }
.need-submit:hover { background: var(--primary-dark); transform: translateX(1px); }
.need-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.need-chips button { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; background: white; color: #475467; font-size: .83rem; font-weight: 700; cursor: pointer; }
.need-chips button:hover { border-color: #c7c8fb; color: var(--primary); background: #fafaff; }
.need-hint { margin: 12px 2px 0; color: #98a2b3; font-size: .78rem; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 16px 22px; margin-top: 22px; color: #667085; font-size: .82rem; font-weight: 650; }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 15px; height: 15px; color: #2b9f69; stroke-width: 2.2; }

.daily-card { position: relative; padding: 26px; border: 1px solid rgba(255,255,255,.35); border-radius: 30px; background: var(--surface-dark); color: white; box-shadow: 0 30px 70px rgba(16,24,39,.22); transform: rotate(1deg); }
.daily-card::before { content: ""; position: absolute; inset: 12px -10px -12px 10px; z-index: -1; border-radius: inherit; background: #dcdcfb; transform: rotate(-2deg); }
.daily-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.mini-label { display: block; margin-bottom: 6px; color: #aab2c0; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.daily-top h2 { margin: 0; max-width: 260px; font-size: 2rem; letter-spacing: -.04em; }
.avatar { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: #ececff; color: var(--primary-dark); font-weight: 900; }
.today-list { display: grid; gap: 9px; margin: 25px 0 20px; }
.today-item { display: grid; grid-template-columns: 40px 1fr auto; gap: 11px; align-items: center; padding: 12px; border: 1px solid rgba(255,255,255,.08); border-radius: 15px; background: rgba(255,255,255,.055); }
.today-item-accent { background: rgba(124,100,246,.22); border-color: rgba(181,170,255,.23); }
.today-icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: rgba(255,255,255,.09); color: #d9dcff; }
.today-item strong, .today-item small { display: block; }
.today-item strong { font-size: .91rem; }
.today-item small { margin-top: 2px; color: #aab2c0; font-size: .76rem; }
.today-action { padding: 6px 8px; border-radius: 999px; background: rgba(255,255,255,.09); color: #d0d5dd; font-size: .68rem; font-weight: 800; }
.daily-progress { padding: 14px; border-radius: 16px; background: white; color: var(--text); }
.progress-head { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 9px; font-size: .8rem; }
.progress-track { height: 8px; overflow: hidden; border-radius: 999px; background: #eceef3; }
.progress-track span { display: block; width: 60%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--primary-2)); }
.daily-progress p { margin: 10px 0 0; color: #667085; font-size: .69rem; line-height: 1.4; }

.section { padding: 84px 0; }
.eyebrow { margin: 0 0 10px; color: var(--primary); font-size: .78rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.section-heading { max-width: 780px; margin-bottom: 34px; }
.section-heading p:last-child { color: var(--muted); font-size: 1.04rem; }
.row-heading { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 24px; }
.row-heading > div { max-width: 760px; }
.row-heading h2 { margin-bottom: 0; }
.text-link { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; color: var(--primary); font-weight: 800; font-size: .9rem; }
.text-link svg { width: 17px; height: 17px; }
.centered-heading { margin-left: auto; margin-right: auto; text-align: center; }

.toolkit-section { padding-top: 54px; background: white; border-top: 1px solid #eef0f4; border-bottom: 1px solid #eef0f4; }
.tool-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.tool-card { position: relative; display: flex; flex-direction: column; min-height: 196px; padding: 20px; border: 1px solid var(--line); border-radius: 21px; background: #fff; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.tool-card:hover { transform: translateY(-3px); border-color: #cbcffa; box-shadow: var(--shadow-sm); }
.tool-card-featured { grid-column: span 2; flex-direction: row; align-items: flex-end; gap: 20px; background: linear-gradient(135deg, #eef0ff, #fafaff); border-color: #d7d9fb; }
.tool-card h3 { margin: auto 0 7px; }
.tool-card-featured h3 { margin-top: 0; font-size: 1.45rem; }
.tool-card p { margin: 0; color: var(--muted); font-size: .9rem; }
.tool-icon { display: grid; place-items: center; width: 46px; height: 46px; flex: 0 0 auto; border-radius: 14px; background: #f2f3f7; color: var(--surface-dark); }
.tool-card:nth-child(2) .tool-icon { background: var(--yellow); }
.tool-card:nth-child(3) .tool-icon { background: var(--pink); }
.tool-card:nth-child(4) .tool-icon { background: var(--mint); }
.tool-card:nth-child(5) .tool-icon { background: var(--blue); }
.tool-card:nth-child(6) .tool-icon { background: #efe8ff; }
.tool-card:nth-child(7) .tool-icon { background: #ffe6d5; }
.tool-card-featured .tool-icon { width: 60px; height: 60px; background: var(--primary); color: white; }
.tool-arrow { margin-left: auto; align-self: center; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 999px; background: white; border: 1px solid #d9dbf8; color: var(--primary); }

.learn-section { background: var(--bg); }
.learning-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; counter-reset: steps; }
.flow-step { position: relative; min-height: 270px; padding: 22px; border: 1px solid var(--line); border-radius: 22px; background: white; }
.flow-step > span:first-child { position: absolute; top: 18px; right: 18px; color: #c3c6cf; font-size: .75rem; font-weight: 850; }
.flow-icon { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 52px; border-radius: 14px; background: #eef0ff; color: var(--primary); }
.flow-step:nth-child(2) .flow-icon { background: var(--mint); color: #16734e; }
.flow-step:nth-child(3) .flow-icon { background: var(--yellow); color: #8f6400; }
.flow-step:nth-child(4) .flow-icon { background: var(--pink); color: #9f315d; }
.flow-step h3 { margin-bottom: 8px; font-size: 1.28rem; }
.flow-step p { margin: 0; color: var(--muted); font-size: .9rem; }

.audience-section { padding-top: 28px; }
.audience-shell { padding: 14px; border: 1px solid #dfe3ec; border-radius: 32px; background: white; box-shadow: var(--shadow-sm); }
.audience-switch { display: inline-flex; padding: 5px; margin: 4px; border-radius: 999px; background: #f1f3f7; }
.audience-tab { padding: 10px 16px; border: 0; border-radius: 999px; background: transparent; color: #667085; font-weight: 800; font-size: .86rem; cursor: pointer; }
.audience-tab.is-active { background: white; color: var(--surface-dark); box-shadow: 0 3px 12px rgba(16,24,39,.08); }
.audience-panel { display: grid; grid-template-columns: 1fr .9fr; gap: 54px; align-items: center; min-height: 520px; padding: 54px; }
.audience-panel[hidden] { display: none !important; }
.audience-copy { max-width: 580px; }
.audience-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1.03rem; }
.check-list { display: grid; gap: 10px; margin: 25px 0 28px; padding: 0; list-style: none; }
.check-list li { display: flex; align-items: center; gap: 10px; color: #475467; font-weight: 650; }
.check-list svg { width: 18px; height: 18px; color: #249b69; stroke-width: 2.2; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 48px; padding: 0 19px; border-radius: 14px; font-weight: 820; }
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--primary); color: white; box-shadow: 0 10px 30px rgba(91,92,240,.22); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: white; border: 1px solid var(--line); }
.btn-dark { background: var(--surface-dark); color: white; }
.audience-visual { position: relative; min-height: 360px; border-radius: 28px; overflow: hidden; }
.student-visual { padding: 38px; background: #eef0ff; }
.student-visual::before { content: ""; position: absolute; width: 220px; height: 220px; border-radius: 50%; right: -70px; top: -70px; background: #d8dafb; }
.subject-card { position: relative; z-index: 1; display: flex; align-items: center; gap: 12px; width: 78%; margin: 0 0 12px; padding: 15px; border-radius: 17px; background: white; box-shadow: 0 10px 24px rgba(77,75,132,.08); transform: rotate(-1deg); }
.subject-card:nth-child(2) { margin-left: 10%; transform: rotate(1deg); }
.subject-card:nth-child(3) { margin-left: 3%; transform: rotate(-.5deg); }
.subject-card > span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; background: #f0f2f6; font-weight: 900; }
.subject-purple > span { background: #e3e3ff; color: var(--primary); }
.subject-card strong, .subject-card small { display: block; }
.subject-card small { color: var(--muted); }
.floating-note { position: absolute; right: 18px; bottom: 20px; z-index: 2; padding: 10px 13px; border-radius: 999px; background: var(--surface-dark); color: white; font-size: .78rem; font-weight: 780; box-shadow: var(--shadow-sm); }
.teacher-visual { display: grid; place-items: center; padding: 38px; background: #eaf8f2; }
.upload-mock { display: grid; place-items: center; width: 72%; padding: 28px; border: 2px dashed #91cdb3; border-radius: 22px; background: rgba(255,255,255,.7); text-align: center; }
.upload-icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 12px; border-radius: 16px; background: white; color: #268864; }
.upload-mock small { margin-top: 5px; color: #5a766b; }
.classroom-mock { position: absolute; left: 24px; bottom: 26px; display: flex; align-items: center; gap: 12px; padding: 13px 15px; border-radius: 16px; background: white; box-shadow: var(--shadow-sm); }
.class-badge { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 13px; background: #ddf5ea; color: #247859; font-weight: 900; }
.classroom-mock strong, .classroom-mock small { display: block; }
.classroom-mock small { color: var(--muted); }
.teacher-visual .floating-note { background: #247859; }

.life-section { background: white; border-top: 1px solid #eef0f4; border-bottom: 1px solid #eef0f4; }
.life-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 72px; align-items: start; }
.life-intro p:last-child { color: var(--muted); font-size: 1.03rem; }
.life-links { display: grid; gap: 11px; }
.life-links > a { display: grid; grid-template-columns: 48px 1fr 30px; gap: 14px; align-items: center; padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: #fbfcfd; transition: transform .18s ease, border-color .18s ease; }
.life-links > a:hover { transform: translateX(3px); border-color: #cfd3f7; }
.life-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: #eef0ff; color: var(--primary); }
.life-links a:nth-child(2) .life-icon { background: var(--yellow); color: #8f6400; }
.life-links a:nth-child(3) .life-icon { background: var(--mint); color: #16734e; }
.life-links strong, .life-links small { display: block; }
.life-links small { margin-top: 3px; color: var(--muted); }
.life-arrow { justify-self: end; color: #98a2b3; }

.manifesto-section { padding-top: 70px; padding-bottom: 92px; }
.manifesto-card { position: relative; overflow: hidden; padding: 64px; border-radius: 34px; background: var(--surface-dark); color: white; text-align: center; }
.manifesto-card::before { content: "IA"; position: absolute; right: -18px; bottom: -86px; color: rgba(255,255,255,.035); font-size: 15rem; line-height: 1; font-weight: 900; letter-spacing: -.1em; }
.manifesto-label { display: inline-block; margin-bottom: 22px; color: #b4bdca; font-size: .76rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.manifesto-card blockquote { position: relative; z-index: 1; max-width: 920px; margin: 0 auto 20px; font-size: clamp(2rem, 4.2vw, 4rem); line-height: 1.04; letter-spacing: -.05em; font-weight: 650; }
.manifesto-card blockquote strong { color: #b6b7ff; }
.manifesto-card p { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; color: #b9c0cc; font-size: 1rem; }

.site-footer { padding: 42px 0; border-top: 1px solid var(--line); background: white; }
.site-footer-v2 { padding: 58px 0 24px; }
.footer-main { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 36px; }
.footer-brand p { max-width: 330px; color: var(--muted); font-size: .9rem; }
.footer-column { display: grid; align-content: start; gap: 9px; color: #667085; font-size: .87rem; }
.footer-column strong { margin-bottom: 5px; color: var(--text); }
.footer-column a:hover { color: var(--primary); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 42px; padding-top: 20px; border-top: 1px solid #eef0f4; color: #98a2b3; font-size: .76rem; }
.footer-wrap { display: flex; justify-content: space-between; gap: 30px; }
.footer-wrap p { margin: 4px 0 0; color: var(--muted); }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; color: #475569; }

.mobile-dock { display: none; }

/* Internal pages - base system */
.page-hero { padding: 70px 0 36px; }
.page-hero h1 { margin-bottom: 18px; font-size: clamp(2.6rem, 5vw, 4.7rem); }
.page-hero p { max-width: 760px; color: var(--muted); font-size: 1.08rem; }
.placeholder-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; padding-bottom: 80px; }
.placeholder-card { padding: 24px; background: white; border: 1px solid var(--line); border-radius: 18px; }
.placeholder-card p { color: var(--muted); margin-bottom: 0; }
.status { display: inline-flex; margin-bottom: 10px; padding: 5px 9px; border-radius: 999px; background: #eef0ff; color: var(--primary); font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.card-grid { display: grid; gap: 18px; }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.feature-card { min-height: 220px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c7c8fb; }
.feature-card p { color: var(--muted); margin-bottom: 0; }
.feature-icon { display: inline-block; margin-bottom: 22px; font-size: 1.7rem; }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: start; }
.principles { display: grid; gap: 12px; }
.principles > div { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: center; padding: 18px; background: white; border-radius: 16px; border: 1px solid #dbeafe; }
.principles strong { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; background: var(--surface-dark); color: white; }
.teacher-banner { display: flex; justify-content: space-between; gap: 24px; align-items: center; padding: 32px; border-radius: 24px; background: var(--surface-dark); color: white; }
.teacher-banner p { margin-bottom: 0; color: #cbd5e1; }
.teacher-banner .btn-primary { background: white; color: var(--surface-dark); box-shadow: none; white-space: nowrap; }

@media (max-width: 1000px) {
  .main-nav { gap: 16px; font-size: .89rem; }
  .hero-v2-grid { grid-template-columns: 1fr .72fr; gap: 32px; }
  .tool-grid { grid-template-columns: repeat(3, 1fr); }
  .tool-card-featured { grid-column: span 2; }
  .learning-flow { grid-template-columns: repeat(2, 1fr); }
  .audience-panel { gap: 30px; padding: 40px 30px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-block; }
  .main-nav { position: absolute; top: 66px; left: 16px; right: 16px; display: none; padding: 18px; flex-direction: column; align-items: stretch; background: white; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
  .main-nav.is-open { display: flex; }
  .nav-cta { justify-content: center; }
  .hero-v2 { padding-top: 48px; }
  .hero-v2-grid { grid-template-columns: 1fr; }
  .daily-card { max-width: 620px; transform: none; }
  .daily-card::before { display: none; }
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
  .audience-panel { grid-template-columns: 1fr; min-height: 0; }
  .audience-visual { min-height: 320px; }
  .life-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-main { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-column:last-child { grid-column: 2 / 4; }
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { padding-bottom: 68px; }
  .container { width: min(calc(100% - 24px), var(--container)); }
  .site-header { position: sticky; }
  .nav-wrap { min-height: 64px; }
  .brand-mark { width: 36px; height: 36px; border-radius: 12px; }
  .brand-text { font-size: 1rem; }
  .main-nav { top: 60px; left: 12px; right: 12px; }
  .hero-v2 { padding: 38px 0 46px; }
  .hero-kicker { font-size: .75rem; }
  h1 { font-size: clamp(2.65rem, 13vw, 4.2rem); }
  h2 { font-size: clamp(2rem, 9vw, 3rem); }
  .hero-copy { font-size: 1rem; }
  .need-box { padding: 14px; border-radius: 20px; }
  .need-input-wrap { grid-template-columns: 1fr 44px; }
  .need-submit { width: 44px; height: 44px; }
  .need-chips { display: grid; grid-template-columns: 1fr 1fr; }
  .need-chips button { min-height: 42px; border-radius: 12px; }
  .hero-trust { gap: 8px 14px; }
  .daily-card { padding: 20px; border-radius: 24px; }
  .daily-top h2 { font-size: 1.75rem; }
  .today-item { grid-template-columns: 38px 1fr; }
  .today-action { display: none; }
  .section { padding: 62px 0; }
  .toolkit-section { padding-top: 54px; }
  .row-heading { align-items: flex-start; flex-direction: column; }
  .tool-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .tool-card, .tool-card-featured { grid-column: auto; min-height: 170px; padding: 16px; flex-direction: column; align-items: stretch; }
  .tool-card-featured { grid-column: 1 / -1; min-height: 190px; }
  .tool-card-featured .tool-icon { width: 48px; height: 48px; }
  .tool-arrow { position: absolute; right: 16px; bottom: 16px; }
  .learning-flow { grid-template-columns: 1fr 1fr; gap: 10px; }
  .flow-step { min-height: 238px; padding: 17px; }
  .flow-icon { margin-bottom: 40px; }
  .audience-section { padding-top: 14px; }
  .audience-shell { padding: 8px; border-radius: 24px; }
  .audience-switch { width: calc(100% - 8px); display: grid; grid-template-columns: 1fr 1fr; }
  .audience-panel { padding: 32px 14px 14px; }
  .audience-visual { min-height: 290px; border-radius: 20px; }
  .student-visual, .teacher-visual { padding: 24px 16px; }
  .subject-card { width: 88%; }
  .upload-mock { width: 86%; }
  .classroom-mock { left: 14px; bottom: 18px; }
  .floating-note { right: 12px; bottom: 12px; font-size: .7rem; }
  .life-links > a { grid-template-columns: 45px 1fr 24px; padding: 14px; }
  .manifesto-card { padding: 46px 22px; border-radius: 25px; }
  .manifesto-card blockquote { font-size: clamp(2rem, 10vw, 3rem); }
  .site-footer-v2 { padding-bottom: 24px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-column:last-child { grid-column: auto; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 6px; }
  .mobile-dock { position: fixed; left: 8px; right: 8px; bottom: 8px; z-index: 120; display: grid; grid-template-columns: repeat(4, 1fr); padding: 7px 6px calc(7px + env(safe-area-inset-bottom)); border: 1px solid rgba(228,231,236,.9); border-radius: 19px; background: rgba(255,255,255,.94); backdrop-filter: blur(18px); box-shadow: 0 16px 40px rgba(16,24,39,.18); }
  .mobile-dock a { display: grid; justify-items: center; gap: 3px; color: #98a2b3; font-size: .66rem; font-weight: 750; }
  .mobile-dock a.is-active { color: var(--primary); }
  .mobile-dock svg { width: 20px; height: 20px; }
  .dock-mark { display: grid; place-items: center; width: 21px; height: 21px; border-radius: 7px; background: var(--primary); color: white; font-size: .48rem; font-weight: 900; }
  .card-grid-3, .placeholder-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .teacher-banner, .footer-wrap { align-items: stretch; flex-direction: column; }
  .teacher-banner .btn-primary { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}