:root {
  --paper: #f4f0e8;
  --paper-deep: #e9e3d7;
  --card: #fffdf8;
  --ink: #18242b;
  --muted: #657177;
  --line: rgba(24, 36, 43, .16);
  --cobalt: #2266e3;
  --cobalt-dark: #174aab;
  --sky: #b9dcff;
  --yellow: #f6cf54;
  --mint: #8bd9bd;
  --coral: #f38d73;
  --lilac: #cdbbf8;
  --radius: 28px;
  --display: "Avenir Next", "Noto Sans TC", "PingFang TC", sans-serif;
  --body: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.72;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: .35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.11'/%3E%3C/svg%3E");
}
a { color: inherit; }
img { max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; font: inherit; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; }
.skip { position: fixed; top: 8px; left: 8px; z-index: 200; padding: 10px 14px; color: #fff; background: var(--ink); border-radius: 10px; transform: translateY(-160%); }
.skip:focus { transform: translateY(0); }
.wrap { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.narrow { width: min(860px, calc(100% - 48px)); margin-inline: auto; }

.cursor-glow { position: fixed; z-index: -1; width: 420px; height: 420px; border-radius: 50%; pointer-events: none; background: radial-gradient(circle, rgba(246,207,84,.18), transparent 68%); transform: translate(-50%, -50%); transition: opacity .3s; }
.site-header { position: sticky; top: 0; z-index: 80; border-bottom: 1px solid transparent; transition: background .25s, border-color .25s, box-shadow .25s; }
.site-header.scrolled { border-color: var(--line); background: rgba(244,240,232,.88); box-shadow: 0 8px 35px rgba(24,36,43,.05); backdrop-filter: blur(18px); }
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font: 900 19px/1 var(--display); letter-spacing: .035em; }
.brand img { width: 43px; height: 43px; border: 1.5px solid var(--line); border-radius: 13px; box-shadow: 0 3px 10px rgba(30,42,56,.16); }
.nav-links { display: flex; align-items: center; gap: 24px; font-size: .94rem; font-weight: 800; }
.nav-links a { text-decoration: none; transition: color .18s; }
.nav-links a:hover { color: var(--cobalt); }
.nav-pill { padding: 8px 15px; color: #fff; background: var(--ink); border-radius: 999px; box-shadow: inset 0 0 0 1px rgba(255,255,255,.18); }
.nav-pill:hover { color: #fff !important; background: var(--cobalt); }

.hero-section { position: relative; min-height: calc(100vh - 20px); overflow: hidden; isolation: isolate; }
.hero-section::before { content: ""; position: absolute; inset: 0; z-index: -2; background: radial-gradient(circle at 83% 26%, rgba(185,220,255,.72), transparent 25%), radial-gradient(circle at 8% 92%, rgba(243,141,115,.16), transparent 28%); }
.hero { min-height: 730px; display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: clamp(54px, 7vw, 100px); padding: 78px 0 110px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 25px; padding: 7px 13px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,253,248,.7); font-size: .8rem; font-weight: 900; letter-spacing: .075em; box-shadow: 0 7px 25px rgba(24,36,43,.05); }
.live-dot { position: relative; width: 8px; height: 8px; border-radius: 50%; background: #28a776; box-shadow: 0 0 0 0 rgba(40,167,118,.4); animation: ping 2s infinite; }
h1, h2, h3 { margin-top: 0; font-family: var(--display); letter-spacing: -.04em; }
h1 { max-width: 640px; margin-bottom: 20px; font-size: clamp(1.9rem, 2.6vw, 2.5rem); line-height: 1.3; font-weight: 800; }
.scribble { position: relative; display: inline-block; color: var(--cobalt); }
.hero-copy { max-width: 600px; margin: 0; color: #46565e; font-size: clamp(1.06rem, 1.7vw, 1.27rem); }
.actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 32px; }
.button { display: inline-flex; min-height: 54px; align-items: center; justify-content: center; gap: 14px; padding: 11px 21px; border: 1.5px solid transparent; border-radius: 15px; text-decoration: none; font-weight: 900; transition: transform .2s ease, box-shadow .2s ease, background .2s; }
.button:hover { transform: translateY(-3px); }
.button.primary { color: #fff; background: var(--cobalt); box-shadow: 0 10px 24px rgba(47,128,237,.3); }
.button.primary:hover { box-shadow: 0 14px 30px rgba(47,128,237,.4); }
.button.secondary { background: rgba(255,253,248,.78); border-color: var(--line); }
.button.light { color: var(--ink); background: #fff; border-color: #fff; box-shadow: 0 10px 24px rgba(30,42,56,.16); }
.trust-row { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; color: var(--muted); font-size: .78rem; font-weight: 800; }
.trust-row span::before { content: "✓"; margin-right: 6px; color: #24966e; font-weight: 950; }

.scroll-cue { position: absolute; left: 50%; bottom: 25px; display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .72rem; font-weight: 800; letter-spacing: .08em; transform: translateX(-50%); }
.scroll-cue span { position: relative; width: 19px; height: 30px; border: 1.5px solid var(--muted); border-radius: 99px; }
.scroll-cue span::after { content: ""; position: absolute; top: 5px; left: 7px; width: 3px; height: 6px; border-radius: 99px; background: var(--muted); animation: scrollCue 1.8s infinite; }

@keyframes progress-sheen { from { transform: translateX(-130%); } to { transform: translateX(230%); } }
@keyframes focusBox { 0%{opacity:0;transform:translate(-50%,-50%) scale(1.55)}25%,72%{opacity:1;transform:translate(-50%,-50%) scale(1)}100%{opacity:0} }
@keyframes cameraFlash { 0%{opacity:0}30%{opacity:.85}100%{opacity:0} }
@keyframes stackBump { 0%{transform:translateY(8px) scale(.9)}70%{transform:translateY(-3px) scale(1.04)}100%{transform:none} }
@keyframes thumbFly { 0%{transform:translate(-108px,110px) scale(.4);opacity:0}28%{opacity:1}100%{transform:none;opacity:1} }

.real-app-page { position: relative; min-height: 100%; margin: -42px -14px -24px; padding: 58px 15px 68px; color: #15191c; background: #f6f7f9; font-family: "PingFang TC", "Noto Sans TC", sans-serif; }
.real-scroll { height: calc(100% + 66px); overflow-y: auto; scrollbar-width: none; }
.real-scroll::-webkit-scrollbar { display: none; }
.real-title { margin: 17px 0 7px; font-size: 2rem; font-weight: 950; letter-spacing: -.05em; line-height: 1.05; }
.real-title.small { font-size: 1.45rem; }
.real-subtitle { margin: 0 0 22px; color: #747c89; font-size: .76rem; line-height: 1.45; }
.real-subtitle b { display: inline-block; margin-left: 5px; padding: 4px 7px; color: #2f80ed; border-radius: 8px; background: #e8f1ff; }
.real-list { display: grid; gap: 11px; }
.real-list-row { display: flex; align-items: center; gap: 13px; width: 100%; min-height: 76px; padding: 14px 15px; border: 1px solid #e0e3e7; border-radius: 16px; background: #fff; text-align: left; cursor: pointer; }
.real-list-row > span { min-width: 0; flex: 1; }
.real-list-row strong, .real-list-row small { display: block; }
.real-list-row strong { font-size: .95rem; line-height: 1.2; }
.real-list-row small { margin-top: 3px; color: #7d8490; font-size: .68rem; }
.real-list-row em { color: #9ca4af; font-style: normal; font-size: 1.3rem; }
.real-class-icon { display: grid; flex: 0 0 auto; width: 47px; height: 47px; place-items: center; border-radius: 12px; font-style: normal; font-weight: 950; }
.real-class-icon.blue, .real-square.blue { color: #2f80ed; background: #e5f0ff; }
.real-class-icon.orange { color: #ff8a3c; background: #fff0e4; }
.real-square { display: grid; flex: 0 0 auto; width: 42px; height: 42px; place-items: center; border-radius: 12px; font-style: normal; }
.real-square.green { color: #23a76f; background: #e6f7ef; }
.real-add-class { width: 100%; margin-top: 18px; padding: 15px; color: #9ca6b5; border: 2px dashed #d7dce2; border-radius: 15px; background: transparent; font-weight: 900; cursor: pointer; }
.real-local-note { margin: 28px 0 0; color: #a3abb7; font-size: .68rem; text-align: center; }
.real-tabbar { position: absolute; left: 0; right: 0; bottom: 0; z-index: 4; display: grid; grid-template-columns: repeat(3,1fr); height: 64px; padding: 8px 15px 7px; border-top: 1px solid #e5e7ea; background: rgba(255,255,255,.96); }
.real-tabbar > * { display: grid; place-items: center; color: #a0a8b4; font-size: 1rem; }
.real-tabbar b { color: #2f80ed; }
.real-tabbar small { display: block; margin-top: -2px; font-size: .55rem; font-weight: 700; }
.real-back { margin: 5px 0 5px; padding: 0; color: #2f80ed; border: 0; background: transparent; font-size: .8rem; font-weight: 800; cursor: pointer; }
.real-stats { display: grid; grid-template-columns: repeat(3,1fr); margin: 20px 0 24px; border: 1px solid #e0e3e7; border-radius: 16px; background: #fff; overflow: hidden; }
.real-stats span { padding: 15px 5px; text-align: center; border-right: 1px solid #e8eaed; }
.real-stats span:last-child { border-right: 0; }
.real-stats b, .real-stats small { display: block; }
.real-stats b { font-size: 1.7rem; line-height: 1; }
.real-stats small { margin-top: 7px; color: #727b89; font-size: .58rem; }
.real-stats b.green { color: #22a872; }
.real-main-cta { width: 100%; padding: 18px; color: #fff; border: 0; border-radius: 15px; background: #347fdf; cursor: pointer; }
.real-main-cta b, .real-main-cta small { display: block; }
.real-main-cta b { font-size: 1rem; }
.real-main-cta small { margin-top: 3px; font-size: .67rem; font-weight: 500; }
.real-main-cta.compact { margin-top: 12px; padding: 16px; font-size: 1rem; font-weight: 900; }
.real-section-label { margin: 22px 0 8px; color: #646d7a; font-size: .8rem; }
.real-session-row { display: flex; justify-content: space-between; align-items: center; padding: 15px; border: 1px solid #e0e3e7; border-radius: 15px; background: #fff; }
.real-session-row b, .real-session-row small { display: block; }
.real-session-row small { color: #7d8490; }
.real-session-row em { color: #9da5b1; font-style: normal; }
.real-session-row em span { color: #ff595e; }
.real-profile { display: flex; gap: 14px; align-items: flex-start; margin: 10px 0 19px; }
.real-profile-avatar { position: relative; display: grid; flex: 0 0 auto; width: 58px; height: 58px; place-items: center; color: #fff; border-radius: 50%; background: #d18935; font-style: normal; font-size: 1.15rem; font-weight: 950; }
.real-profile-avatar.crown::after { content: "♛"; position: absolute; left: -4px; top: -7px; display: grid; width: 20px; height: 20px; place-items: center; color: #5c2f8b; border-radius: 50%; background: #d7b2ff; font-size: .65rem; }
.real-profile h2 { margin: 0 0 6px; font-size: 1.45rem; line-height: 1; }
.real-status-tag { display: inline-block; padding: 4px 8px; color: #2f80ed; border-radius: 999px; background: #e9f1ff; font-size: .65rem; }
.real-profile p { display: flex; flex-wrap: wrap; gap: 5px; margin: 8px 0 0; }
.real-profile p span, .real-talent { padding: 4px 7px; color: #754bd2; border-radius: 999px; background: #f1eaff; font-size: .58rem; font-style: normal; }
.real-profile p button { padding: 3px 7px; color: #9ba4b1; border: 1px dashed #cbd0d8; border-radius: 999px; background: transparent; font-size: .58rem; }
.real-panel { margin-top: 13px; padding: 14px; border: 1px solid #e0e3e7; border-radius: 16px; background: #fff; }
.real-panel.purple { border-color: #ad6df0; background: #f7edff; }
.real-panel h3 { margin: 0 0 7px; font-size: .85rem; }
.real-panel h3 small { float: right; color: #9ca4af; font-size: .62rem; font-weight: 600; }
.real-panel p { margin: 5px 0 0; color: #929ba8; font-size: .62rem; line-height: 1.45; }
.real-input-row { display: grid; grid-template-columns: 1fr auto; gap: 7px; }
.real-input-row span { padding: 10px; border: 1px solid #e1e4e8; border-radius: 10px; background: #f8f9fa; font-size: .72rem; }
.real-input-row button { color: #fff; border: 0; border-radius: 10px; background: #a9cdf9; font-weight: 900; }
.real-switch { float: right; width: 44px; height: 25px; border: 0; border-radius: 999px; background: #a96ce4; }
.real-switch::after { content: ""; display: block; width: 21px; height: 21px; margin: 2px 2px 2px auto; border-radius: 50%; background: #fff; }
.real-secret-add { float: right; padding: 6px 10px; color: #5b3a00; border: 0; border-radius: 999px; background: #ffe7a7; font-weight: 900; }
.real-calendar { display: grid; grid-template-columns: repeat(7,1fr); gap: 5px; margin-top: 8px; text-align: center; font-size: .61rem; }
.real-calendar > * { display: grid; height: 25px; place-items: center; border-radius: 50%; }
.real-calendar b { color: #747c89; }
.real-calendar .present { color: #1ca56d; background: #e5f6ee; font-weight: 950; }
.real-calendar .absent { color: #ef5555; background: #ffebeb; font-weight: 950; }
.real-calendar .today { color: #1ca56d; outline: 2px solid #2f80ed; font-weight: 950; }
.real-outline-btn { padding: 7px 11px; border: 1px solid #d5d9df; border-radius: 999px; background: #fff; font-size: .68rem; font-weight: 900; }
.real-segment { display: grid; grid-template-columns: 1fr 1fr; margin: 10px 0; padding: 3px; border-radius: 10px; background: #f0f2f5; text-align: center; }
.real-segment > * { padding: 7px 4px; color: #6d7582; border: 0; border-radius: 8px; background: transparent; font: inherit; font-size: .68rem; font-weight: 900; cursor: pointer; }
.real-segment > b, .real-segment > .active { color: #11161a; background: #fff; }
.real-segment.three { grid-template-columns: repeat(3,1fr); border: 1px solid #e0e3e7; background: #fff; }
.real-segment.three button.active { color: #fff; background: #347fdf; }
.real-course-folder { display: flex; justify-content: space-between; padding: 10px; border: 1px solid #e0e3e7; border-radius: 12px; font-size: .68rem; }
.real-course-folder b::first-letter { color: #2f80ed; }
.center { text-align: center; }
.blue-text { color: #2f80ed !important; }
.real-helper { color: #929ba8; font-size: .65rem; line-height: 1.45; }
.real-folder-head { display: flex; justify-content: space-between; align-items: center; }
.real-folder-head b { font-size: .85rem; }
.real-folder-head b i { display: inline-grid; width: 28px; height: 28px; place-items: center; color: #2f80ed; border-radius: 8px; background: #e7f0ff; font-style: normal; }
.real-folder-head span { color: #929ba8; font-size: .63rem; }
.real-folder-panel h3 { margin-top: 12px; font-size: .72rem; }
.real-thumb-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 5px; }
.real-thumb-row i { aspect-ratio: 1; border-radius: 8px; background: linear-gradient(145deg,#6a8fb1,#dcc68a 48%,#686454); }
.real-thumb-row i:nth-child(even) { background: linear-gradient(145deg,#2c587f,#87b6da 55%,#d0c3aa); }
.real-wall { padding-bottom: 85px; background: #fff; }
.real-wall-top { display: flex; justify-content: space-between; align-items: center; color: #747c89; font-size: .8rem; }
.real-wall-top button { padding: 7px 10px; border: 1px solid #e0e3e7; border-radius: 999px; background: #fff; font-weight: 900; }
.real-round { margin-top: 16px; padding: 10px 13px; color: #fff; border: 0; border-radius: 10px; background: #347fdf; font-weight: 950; }
.real-wall-progress { display: flex; align-items: baseline; gap: 5px; margin-top: 20px; }
.real-wall-progress b { color: #20a873; font-size: 2.1rem; }
.real-wall-progress span { color: #727b89; font-size: 1rem; }
.real-wall-progress small { margin-left: auto; color: #a0a7b2; }
.real-progress-track { height: 8px; margin: 8px 0 19px; border-radius: 99px; background: #e2e5e9; overflow: hidden; }
.real-progress-track i { display: block; width: 0; height: 100%; background: #20a873; transition: width .25s; }
.real-group-row { display: flex; align-items: center; gap: 10px; width: 100%; padding: 11px; border: 2px solid #20a873; border-radius: 14px; background: #fff; text-align: left; }
.real-group-row i { display: grid; width: 46px; height: 46px; place-items: center; color: #fff; border-radius: 50%; background: #20a873; font-style: normal; font-weight: 950; }
.real-group-row span { flex: 1; }
.real-group-row b, .real-group-row small { display: block; }
.real-group-row small { color: #7d8490; font-size: .58rem; }
.real-group-row em { color: #20a873; font-style: normal; font-size: 1.4rem; }
.real-student-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin-top: 13px; }
.real-student-grid button { min-width: 0; padding: 12px 5px; border: 2px solid #20a873; border-radius: 14px; background: #fff; }
.real-student-grid i { position: relative; display: grid; width: 64px; height: 64px; margin: auto; place-items: center; border-radius: 50%; background: #e4e7eb; font-style: normal; font-size: 1.3rem; font-weight: 950; }
.real-student-grid i.crown::after { content: "♛"; position: absolute; left: -2px; top: -4px; color: #65308f; font-size: .7rem; }
.real-student-grid b { display: block; margin-top: 6px; font-size: .72rem; }
.real-student-grid button.done { color: #fff; background: #20a873; }
.real-wall-actions { position: absolute; left: 15px; right: 15px; bottom: 18px; display: grid; grid-template-columns: 2fr 1fr; gap: 8px; }
.real-wall-actions button { padding: 13px; color: #2f80ed; border: 1px solid #dfe3e8; border-radius: 13px; background: #fff; font-weight: 950; }
.real-wall-actions button:last-child { color: #ef5555; border-color: #ffc7c7; }
.real-camera { position: relative; height: calc(100% + 66px); margin: -42px -14px -24px; color: #fff; background: #0b1115; overflow: hidden; }
.real-viewfinder { position: absolute; inset: 0; background: radial-gradient(circle at 70% 32%,rgba(139,174,148,.7),transparent 30%),linear-gradient(150deg,#798e9c 0 19%,#395c46 19% 48%,#234436 48% 72%,#142229 72%); }
.real-viewfinder.grid-on::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.22) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.22) 1px,transparent 1px); background-size: 33.333% 33.333%; }
.real-scene-shape { position: absolute; left: 42%; top: 28%; width: 80px; height: 150px; border-radius: 44px 44px 24px 24px; background: #f18870; box-shadow: 0 -42px 0 -20px #60402f; }
.real-camera-header { position: absolute; left: 0; right: 0; top: 0; z-index: 4; display: grid; grid-template-columns: 35px 1fr auto auto auto; gap: 7px; align-items: center; padding: 13px 10px 12px; background: rgba(8,12,15,.74); backdrop-filter: blur(12px); }
.real-camera-avatar { display: grid; width: 34px; height: 34px; place-items: center; color: #174a36; border: 2px solid #35d39a; border-radius: 50%; background: #f2b483; font-weight: 950; }
.real-camera-header div > b, .real-camera-header div > small { display: block; }
.real-camera-header div > b { font-size: .78rem; }
.real-camera-header div > small { color: rgba(255,255,255,.62); font-size: .5rem; }
.real-shot-badge { padding: 5px 7px; color: #35d39a; border: 1px solid #35d39a; border-radius: 999px; font-size: .58rem; font-weight: 950; }
.real-mode-toggle { display: flex; padding: 2px; border: 1px solid rgba(255,255,255,.35); border-radius: 10px; }
.real-mode-toggle button { padding: 6px 7px; color: #aaa; border: 0; border-radius: 8px; background: transparent; font-size: .56rem; font-weight: 950; }
.real-mode-toggle button.active { color: #35d39a; }
.real-ratio { padding: 8px 7px; color: #fff; border: 1px solid rgba(255,255,255,.35); border-radius: 10px; background: rgba(0,0,0,.25); font-size: .6rem; font-weight: 950; }
.real-focus-target { position: absolute; left: 35%; top: 45%; z-index: 3; width: 70px; height: 70px; border: 0; background: transparent; }
.real-focus-target.active { border: 2px solid #ffd84d; }
.real-burst-stack { position: absolute; right: 9px; top: 230px; z-index: 4; display: grid; gap: 6px; justify-items: end; }
.real-burst-stack i { position: relative; width: 47px; height: 60px; border: 2px solid #fff; border-radius: 8px; background: linear-gradient(145deg,#b98c5b,#e8c4a0 50%,#405f68); box-shadow: 0 2px 8px rgba(0,0,0,.45); }
.real-burst-stack i:nth-child(2) { background: linear-gradient(145deg,#6f8e8d,#d2d7b8); }
.real-burst-stack i:nth-child(3) { background: linear-gradient(145deg,#7e92a8,#d0c0a8); }
.real-burst-stack i small { position: absolute; left: 3px; bottom: 2px; font-size: .48rem; }
.real-burst-stack em { padding: 4px 7px; border-radius: 999px; background: rgba(0,0,0,.75); font-size: .5rem; font-style: normal; font-weight: 900; }
.real-student-strip { position: absolute; left: 0; right: 0; bottom: 136px; z-index: 4; display: flex; gap: 11px; padding: 7px 10px; background: rgba(5,8,10,.68); overflow-x: auto; }
.real-student-strip button { position: relative; flex: 0 0 auto; color: #fff; border: 0; background: transparent; }
.real-student-strip i { display: grid; width: 41px; height: 41px; place-items: center; border: 3px solid #35d39a; border-radius: 50%; background: #ce8b37; font-style: normal; font-weight: 950; }
.real-student-strip button.active i { outline: 2px solid #d7ff48; }
.real-student-strip small { display: block; margin-top: 2px; font-size: .45rem; }
.real-student-strip b { position: absolute; right: -3px; top: -2px; display: grid; width: 17px; height: 17px; place-items: center; color: #06100d; border-radius: 50%; background: #35d39a; font-size: .5rem; }
.real-zoom-row { position: absolute; left: 50%; bottom: 91px; z-index: 4; display: flex; align-items: center; padding: 4px 7px; border-radius: 999px; background: rgba(0,0,0,.72); transform: translateX(-50%); }
.real-zoom-row button { min-width: 37px; padding: 7px 5px; color: #d7d7d7; border: 0; border-radius: 999px; background: transparent; font-size: .56rem; font-weight: 950; }
.real-zoom-row button.active { color: #05120e; background: #35d39a; }
.real-camera-bottom { position: absolute; left: 0; right: 0; bottom: 0; z-index: 4; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 9px 13px 15px; background: rgba(2,5,7,.88); }
.real-refuse { justify-self: start; padding: 8px 10px; color: #e6a446; border: 1px solid #9b612b; border-radius: 12px; background: rgba(80,46,20,.42); }
.real-refuse b, .real-refuse small { display: block; }
.real-refuse b { font-size: .66rem; }
.real-refuse small { font-size: .48rem; }
.real-done { justify-self: end; padding: 12px 11px; color: #06241a; border: 0; border-radius: 11px; background: #35d39a; font-weight: 950; }
.real-camera-flash { position: absolute; inset: 0; z-index: 9; pointer-events: none; }
.real-camera-flash.fire { animation: flash .25s both; }
.real-review { padding-bottom: 80px; }
.real-review-line { display: flex; justify-content: space-between; padding: 6px 0; border-top: 1px solid #e3e6e9; font-size: .7rem; }
.real-review-line b { padding: 1px 8px; color: #1da56e; border-radius: 999px; background: #e6f7ef; }
.real-lesson-review { margin: 14px -15px -80px; padding: 23px 15px 90px; color: #fff; background: #347fdf; }
.real-lesson-review .real-stats { color: #fff; border: 0; background: transparent; }
.real-lesson-review .real-stats small { color: rgba(255,255,255,.72); }
.real-info-box { padding: 11px; color: #9ba4b1; border: 1px solid #e0e3e7; border-radius: 12px; font-size: .68rem; line-height: 1.45; }
.real-empty { margin-top: 38px; color: #a4acb7; text-align: center; }
.evidence-gap { display: grid; min-height: 100%; place-content: center; padding: 28px; text-align: center; }
.evidence-gap > span { justify-self: center; padding: 5px 9px; color: #743b00; border-radius: 999px; background: #ffe2a2; font-size: .62rem; font-weight: 950; }
.evidence-gap h2 { margin: 12px 0 4px; font-size: 1.7rem; }
.evidence-gap p, .evidence-gap small { color: #737c89; }
.evidence-gap ul { margin: 16px 0; padding: 16px 16px 16px 36px; border: 1px solid #e0e3e7; border-radius: 14px; background: #fff; text-align: left; font-size: .7rem; }

.feature-lab-section { position: relative; padding: 125px 0; background: #e8edf4; overflow: hidden; }
.feature-lab-section::before { content: "PAI PAI"; position: absolute; right: -1.5vw; top: 40px; color: rgba(24,36,43,.035); font: 950 clamp(5rem, 14vw, 13rem)/1 var(--display); letter-spacing: -.08em; white-space: nowrap; }
.lab-heading { position: relative; z-index: 1; max-width: 820px; margin-bottom: 46px; }
.lab-heading .section-title { margin-bottom: 0; }
.lab-heading .section-lead { margin: 20px 0 0; }
.build-proof { display: flex; flex-wrap: wrap; gap: 9px; padding: 19px; border: 1.5px solid var(--ink); border-radius: 20px; background: var(--card); box-shadow: 6px 7px 0 var(--ink); }
.build-proof span { padding: 7px 10px; border-radius: 999px; background: #eaf7ef; font-size: .72rem; font-weight: 900; }
.build-proof span:nth-child(2) { background: #e4edff; }
.build-proof i { display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 50%; background: #28a776; box-shadow: 0 0 0 4px rgba(40,167,118,.13); }
.build-proof small { flex-basis: 100%; color: var(--muted); line-height: 1.55; }
.lab-shell { position: relative; z-index: 1; display: grid; grid-template-columns: 270px minmax(0,1fr); min-height: 780px; border: 2px solid var(--ink); border-radius: 32px; background: var(--card); box-shadow: 13px 15px 0 var(--ink); overflow: hidden; }
.lab-nav { display: flex; flex-direction: column; padding: 22px 15px; color: #fff; background: var(--ink); }
.lab-nav-head { display: flex; justify-content: space-between; align-items: center; padding: 6px 8px 18px; color: #b8c5ca; font-size: .72rem; letter-spacing: .08em; }
.lab-nav-head b { color: var(--mint); }
.lab-nav button { position: relative; display: grid; grid-template-columns: 36px 1fr; gap: 1px 10px; width: 100%; padding: 13px 12px; color: #d4dde0; border: 0; border-radius: 14px; background: transparent; text-align: left; cursor: pointer; transition: color .2s, background .2s, transform .2s; }
.lab-nav button:hover { color: #fff; background: rgba(255,255,255,.07); transform: translateX(3px); }
.lab-nav button.active { color: var(--ink); background: var(--yellow); }
.lab-nav button > span { grid-row: 1 / 3; align-self: center; color: currentColor; font: 900 .7rem/1 var(--display); opacity: .7; }
.lab-nav button b { font-size: .87rem; }
.lab-nav button small { color: currentColor; font-size: .65rem; opacity: .65; }
.lab-stage { display: grid; grid-template-columns: minmax(340px,.8fr) minmax(260px,.55fr); gap: 38px; align-items: center; padding: 48px; background: radial-gradient(circle at 34% 50%, #cfe0ff 0 25%, transparent 25.3%), var(--card); }
.lab-device { position: relative; justify-self: center; width: 358px; height: 680px; padding: 13px 12px 18px; border: 2px solid var(--ink); border-radius: 48px; background: #101820; box-shadow: 9px 11px 0 var(--ink); overflow: hidden; }
.lab-status { position: absolute; inset: 13px 21px auto; z-index: 8; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 35px; color: #11161a; font-size: .63rem; font-weight: 900; pointer-events: none; }
.lab-island { width: 72px; height: 23px; border-radius: 999px; background: #050708; }
.lab-system { justify-self: end; letter-spacing: .04em; }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.lab-screen { height: 100%; padding: 42px 14px 24px; border-radius: 37px; background: #f7f4ed; overflow: auto; scrollbar-width: none; }
.lab-screen::-webkit-scrollbar { display: none; }
.lab-home-indicator { position: absolute; left: 50%; bottom: 7px; width: 92px; height: 4px; border-radius: 999px; background: rgba(255,255,255,.72); transform: translateX(-50%); }
.lab-page { min-height: 100%; animation: labIn .35s cubic-bezier(.2,.8,.2,1); }
.lab-video-page { position: relative; margin: -42px -14px -24px; width: calc(100% + 28px); height: calc(100% + 66px); border-radius: 37px; overflow: hidden; background: #000; }
.lab-video { display: block; width: 100%; height: 100%; object-fit: cover; }
.lab-page-head { display: flex; justify-content: space-between; align-items: start; gap: 12px; padding: 10px 2px 13px; border-bottom: 1px solid rgba(24,36,43,.1); }
.lab-page-head p { margin: 0 0 1px; color: var(--cobalt); font-size: .62rem; font-weight: 900; letter-spacing: .06em; }
.lab-page-head h3 { margin: 0; font-size: 1.35rem; line-height: 1.12; }
.lab-badge { flex: 0 0 auto; padding: 5px 8px; border-radius: 999px; background: #dfe9ff; color: var(--cobalt-dark); font-size: .58rem; font-weight: 900; }
.lab-card { margin-top: 11px; padding: 13px; border: 1px solid rgba(24,36,43,.13); border-radius: 16px; background: #fff; box-shadow: 0 5px 14px rgba(24,36,43,.06); }
.lab-card.tint { background: #edf4ff; }
.lab-card.yellow { background: #fff5c9; }
.lab-card.coral { background: #ffebe4; }
.lab-card-title { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; }
.lab-card-title b { font-size: .78rem; }
.lab-card-title small { color: var(--muted); font-size: .58rem; }
.lab-row { display: flex; align-items: center; gap: 9px; min-height: 43px; padding: 8px 0; border-top: 1px solid rgba(24,36,43,.08); }
.lab-row:first-child { border-top: 0; }
.lab-row > span:not(.lab-avatar) { min-width: 0; flex: 1; }
.lab-row b, .lab-row small { display: block; }
.lab-row b { font-size: .72rem; }
.lab-row small { color: var(--muted); font-size: .58rem; line-height: 1.35; }
.lab-avatar { position: relative; display: grid; flex: 0 0 auto; width: 35px; height: 35px; place-items: center; border: 1px solid var(--ink); border-radius: 12px; background: var(--yellow); font-size: .72rem; font-weight: 950; }
.lab-avatar.mint { background: var(--mint); }
.lab-avatar.coral { background: var(--coral); }
.lab-avatar.sky { background: var(--sky); }
.lab-avatar.crown::after { content: "♛"; position: absolute; margin: -32px 0 0 27px; color: #d69600; text-shadow: 0 1px #fff; }
.lab-action, .lab-primary, .lab-chip, .lab-icon-action { border: 0; cursor: pointer; transition: transform .18s, background .18s; }
.lab-action:active, .lab-primary:active, .lab-chip:active, .lab-icon-action:active { transform: scale(.96); }
.lab-action { flex: 0 0 auto; padding: 6px 8px; border-radius: 9px; background: #e8effd; color: var(--cobalt-dark); font-size: .6rem; font-weight: 900; }
.lab-primary { width: 100%; margin-top: 11px; padding: 11px; color: #fff; border-radius: 12px; background: var(--cobalt); font-size: .72rem; font-weight: 900; }
.lab-primary.alt { color: var(--ink); background: var(--yellow); }
.lab-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.lab-chip { padding: 6px 8px; border: 1px solid rgba(24,36,43,.15); border-radius: 999px; background: #fff; font-size: .58rem; font-weight: 800; }
.lab-chip.active { color: #fff; border-color: var(--cobalt); background: var(--cobalt); }
.lab-switch { position: relative; flex: 0 0 auto; width: 38px; height: 22px; padding: 0; border: 0; border-radius: 999px; background: #c8d0d4; cursor: pointer; }
.lab-switch::after { content: ""; position: absolute; left: 3px; top: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: transform .2s; }
.lab-switch.on { background: #28a776; }
.lab-switch.on::after { transform: translateX(16px); }
.lab-mini-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; }
.lab-metric { padding: 9px 5px; border-radius: 11px; background: #f0eee7; text-align: center; }
.lab-metric b, .lab-metric small { display: block; }
.lab-metric b { font-size: 1rem; }
.lab-metric small { color: var(--muted); font-size: .52rem; }
.lab-progress { height: 7px; margin: 8px 0; border-radius: 999px; background: #dce3e6; overflow: hidden; }
.lab-progress i { display: block; width: 68%; height: 100%; border-radius: inherit; background: var(--cobalt); transition: width .25s; }
.lab-camera { position: relative; min-height: 455px; margin: 0 -14px -24px; color: #fff; background: #15282e; overflow: hidden; }
.lab-camera-top { position: relative; z-index: 2; display: flex; justify-content: space-between; padding: 13px; }
.lab-camera .lab-chips { position: relative; z-index: 2; justify-content: center; padding: 0 10px; }
.lab-camera .lab-chip { color: #fff; border-color: rgba(255,255,255,.25); background: rgba(0,0,0,.35); }
.lab-camera .lab-chip.active { color: var(--ink); background: var(--yellow); }
.lab-viewfinder { position: relative; height: 270px; margin-top: -57px; background: linear-gradient(165deg,#9dc4cc,#eef0df 55%,#7ba875); overflow: hidden; }
.lab-viewfinder::before { content: ""; position: absolute; left: 50%; bottom: 19px; width: 105px; height: 162px; border-radius: 55px 55px 24px 24px; background: #ef907c; box-shadow: 0 -52px 0 -25px #593d30; transform: translateX(-50%); }
.lab-viewfinder.grid-on { background-image: linear-gradient(rgba(255,255,255,.3) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.3) 1px,transparent 1px),linear-gradient(165deg,#9dc4cc,#eef0df 55%,#7ba875); background-size: 33.333% 33.333%,33.333% 33.333%,100% 100%; }
.lab-level { position: absolute; left: 50%; top: 50%; z-index: 2; width: 70px; height: 2px; border-radius: 2px; background: #73efb5; transform: translate(-50%,-50%) rotate(-4deg); }
.lab-camera-controls { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 12px 19px; }
.lab-shutter { width: 63px; height: 63px; border: 6px solid #fff; border-radius: 50%; background: transparent; box-shadow: inset 0 0 0 4px #15282e; cursor: pointer; }
.lab-shutter.video { border-color: #fff; background: #ed5b51; box-shadow: inset 0 0 0 8px #15282e; }
.lab-shutter.recording { border-radius: 20px; transform: scale(.78); }
.lab-shot-count { justify-self: end; color: #fff; font-size: .65rem; font-weight: 900; }
.lab-modes { display: flex; justify-content: center; gap: 16px; color: #9dadb3; font-size: .62rem; font-weight: 900; }
.lab-modes button { padding: 4px 2px; color: inherit; border: 0; border-bottom: 2px solid transparent; background: transparent; cursor: pointer; }
.lab-modes button.active { color: var(--yellow); border-color: var(--yellow); }
.lab-photo-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; }
.lab-photo { position: relative; min-height: 76px; border: 2px solid transparent; border-radius: 11px; background: linear-gradient(140deg,#badbed,#ffe1a8); cursor: pointer; }
.lab-photo:nth-child(even) { background: linear-gradient(140deg,#efd1fa,#a9dfc8); }
.lab-photo.selected { border-color: var(--cobalt); box-shadow: inset 0 0 0 2px #fff; }
.lab-photo.favorite::after { content: "★"; position: absolute; right: 6px; top: 3px; color: #e0a600; }
.lab-folder { display: flex; justify-content: space-between; align-items: center; margin-top: 7px; padding: 9px 10px; border-radius: 11px; background: #f1eee6; font-size: .67rem; }
.lab-tabs { display: grid; grid-template-columns: repeat(3,1fr); gap: 4px; margin-top: 10px; padding: 4px; border-radius: 12px; background: #e3e7e9; }
.lab-tabs button { padding: 7px 3px; border: 0; border-radius: 9px; background: transparent; font-size: .56rem; font-weight: 900; cursor: pointer; }
.lab-tabs button.active { color: #fff; background: var(--cobalt); }
.lab-storage { position: relative; height: 15px; border-radius: 999px; background: linear-gradient(90deg,var(--cobalt) 0 18%,var(--yellow) 18% 76%,#dfe4e6 76%); }
.lab-storage::after { content: "24.6 GB 可用"; position: absolute; right: 0; top: 18px; color: var(--muted); font-size: .54rem; }
.lab-notice { position: relative; padding-left: 27px; }
.lab-notice::before { content: "!"; position: absolute; left: 0; top: 0; display: grid; width: 20px; height: 20px; place-items: center; color: #fff; border-radius: 50%; background: var(--coral); font-size: .65rem; font-weight: 950; }
.lab-message { margin-top: 7px; padding: 9px; border-radius: 10px 10px 10px 2px; background: #e9effd; font-size: .63rem; }
.lab-message.reply { margin-left: 25px; border-radius: 10px 10px 2px 10px; background: #e5f5eb; }
.lab-input { width: 100%; min-height: 58px; padding: 9px; border: 1px solid var(--line); border-radius: 11px; background: #fff; font: inherit; font-size: .64rem; resize: none; }
.lab-coach { align-self: center; }
.lab-coach > span { display: inline-block; padding: 6px 9px; color: #fff; border-radius: 8px; background: var(--cobalt); font-size: .62rem; font-weight: 950; letter-spacing: .06em; }
.lab-coach h3 { margin: 13px 0 8px; font-size: 1.3rem; line-height: 1.35; }
.lab-coach p { color: var(--muted); font-size: .9rem; }
.lab-live { margin-top: 25px; padding: 13px 15px; border-left: 4px solid var(--yellow); border-radius: 0 12px 12px 0; background: rgba(255,255,255,.7); font-size: .73rem; font-weight: 800; }
.lab-live.popped, .lab-viewfinder.popped { animation: cardPop .34s both; }
.inventory { position: relative; z-index: 1; margin-top: 80px; }
.inventory-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 22px; padding-bottom: 17px; border-bottom: 2px solid var(--ink); }
.inventory-head span { color: var(--cobalt); font-size: .68rem; font-weight: 950; letter-spacing: .12em; }
.inventory-head h3 { margin: 3px 0 0; font-size: clamp(2rem,4vw,3.5rem); }
.inventory-head p { color: var(--muted); font-size: .8rem; }
.inventory-grid { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.inventory-grid article { min-height: 176px; padding: 23px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: rgba(255,255,255,.55); transition: background .2s, transform .2s; }
.inventory-grid article:hover { position: relative; z-index: 1; background: var(--yellow); transform: translateY(-4px); }
.inventory-grid b { display: block; margin-bottom: 8px; font-size: .9rem; }
.inventory-grid p { margin: 0; color: #4d5a60; font-size: .72rem; line-height: 1.65; }

.features-section { padding: 125px 0; }
.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.feature { --mouse-x: 50%; --mouse-y: 50%; position: relative; grid-column: span 5; min-height: 330px; padding: 30px; border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card); box-shadow: 7px 8px 0 var(--ink); overflow: hidden; transition: transform .25s, box-shadow .25s; }
.feature::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; background: radial-gradient(350px circle at var(--mouse-x) var(--mouse-y), rgba(34,102,227,.17), transparent 45%); transition: opacity .25s; }
.feature:hover { transform: translateY(-7px); box-shadow: 10px 13px 0 var(--ink); }
.feature:hover::after { opacity: 1; }
.feature.wide { grid-column: span 7; }
.feature.cobalt { color: #fff; background: var(--cobalt); }
.feature.cobalt::after { background: radial-gradient(350px circle at var(--mouse-x) var(--mouse-y), rgba(255,255,255,.2), transparent 45%); }
.feature.sunshine { background: var(--yellow); }
.feature h3 { position: relative; z-index: 1; margin: 70px 0 9px; font-size: clamp(1.55rem, 3vw, 2.25rem); }
.feature p { position: relative; z-index: 1; max-width: 580px; margin: 0; color: var(--muted); }
.feature.cobalt p { color: #dbe7ff; }
.feature-no { position: relative; z-index: 1; font-size: .78rem; font-weight: 950; letter-spacing: .1em; }
.feature-icon { position: absolute; top: 24px; right: 25px; font-size: 2.4rem; line-height: 1; transition: transform .25s; }
.feature:hover .feature-icon { transform: rotate(45deg); }
.feature-marquee { position: absolute; left: 0; right: 0; bottom: 20px; color: rgba(255,255,255,.22); font: 950 1.4rem/1 var(--display); white-space: nowrap; transform: translateX(-5%); }
.attendance-toggle { display: inline-flex; margin-top: 25px; padding: 5px; border: 1px solid var(--line); border-radius: 99px; }
.attendance-toggle span { padding: 5px 9px; color: var(--muted); border-radius: 99px; font-size: .64rem; font-weight: 900; }
.attendance-toggle .on { color: #fff; background: #24966e; }
.photo-stack-mini { position: relative; width: 90px; height: 55px; margin-top: 28px; }
.photo-stack-mini i { position: absolute; width: 49px; height: 58px; border: 2px solid var(--ink); border-radius: 8px; background: var(--coral); box-shadow: 2px 2px 0 var(--ink); }
.photo-stack-mini i:nth-child(2) { left: 20px; background: var(--sky); transform: rotate(7deg); }
.photo-stack-mini i:nth-child(3) { left: 40px; background: var(--mint); transform: rotate(14deg); }
.pulse-line { display: flex; align-items: end; gap: 6px; height: 55px; margin-top: 24px; }
.pulse-line i { width: 8px; height: 19px; border-radius: 99px; background: var(--cobalt); animation: pulseBars 1.4s ease-in-out infinite alternate; }
.pulse-line i:nth-child(2) { height: 43px; animation-delay: -.3s; }
.pulse-line i:nth-child(3) { height: 29px; animation-delay: -.6s; }
.pulse-line i:nth-child(4) { height: 52px; animation-delay: -.9s; }

.promise { padding: 125px 0 145px; border-block: 1px solid var(--line); background: #dbeafd; overflow: hidden; }
.promise-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; }
.text-link { display: inline-flex; gap: 13px; margin-top: 15px; padding-bottom: 3px; border-bottom: 1.5px solid var(--ink); text-decoration: none; font-weight: 900; }
.text-link span { transition: transform .2s; }
.text-link:hover span { transform: translateX(5px); }
.privacy-orbit { position: relative; min-height: 570px; }
.privacy-orbit::before, .privacy-orbit::after { content: ""; position: absolute; left: 50%; top: 45%; border: 1px dashed rgba(24,36,43,.28); border-radius: 50%; transform: translate(-50%,-50%); }
.privacy-orbit::before { width: 460px; height: 460px; }
.privacy-orbit::after { width: 330px; height: 330px; }
.orbit-core { position: absolute; left: 50%; top: 45%; z-index: 2; display: grid; width: 190px; height: 190px; place-items: center; align-content: center; border: 1.5px solid var(--ink); border-radius: 50%; background: var(--card); box-shadow: 9px 10px 0 var(--ink); transform: translate(-50%,-50%); }
.orbit-core img { width: 56px; height: 56px; margin-bottom: 9px; border-radius: 15px; }
.orbit-core b, .orbit-core small { display: block; text-align: center; }
.orbit-core small { color: var(--muted); font-size: .67rem; }
.orbit-item { position: absolute; z-index: 3; display: flex; align-items: center; gap: 10px; padding: 12px 16px; border: 1.5px solid var(--ink); border-radius: 14px; background: var(--card); box-shadow: 4px 5px 0 var(--ink); cursor: pointer; transition: transform .2s, background .2s; }
.orbit-item:hover, .orbit-item.active { color: #fff; background: var(--cobalt); transform: translateY(-4px); }
.orbit-item span { display: grid; width: 31px; height: 31px; place-items: center; color: #fff; border-radius: 50%; background: var(--cobalt); font-size: .64rem; font-weight: 950; }
.orbit-item b { font-size: .83rem; }
.orbit-local { left: 4%; top: 12%; }
.orbit-manual { right: 1%; top: 25%; }
.orbit-share { left: 7%; bottom: 19%; }
.orbit-caption { position: absolute; left: 50%; bottom: -2px; width: min(480px, 95%); padding: 14px 17px; color: #415968; border: 1px solid rgba(24,36,43,.12); border-radius: 14px; background: rgba(255,255,255,.55); font-size: .82rem; text-align: center; transform: translateX(-50%); }

.closing-section { padding: 95px 0; }
.cta { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end; padding: 58px; color: #fff; border-radius: 34px; background: var(--cobalt); box-shadow: 12px 14px 0 var(--ink); overflow: hidden; }
.cta::after { content: "?"; position: absolute; right: 25%; top: -75px; color: rgba(255,255,255,.08); font: 950 19rem/1 var(--display); transform: rotate(11deg); }
.cta > * { position: relative; z-index: 1; }
.cta-kicker { color: var(--yellow); font-size: .76rem; font-weight: 950; letter-spacing: .13em; }
.cta h2 { max-width: 750px; margin: 6px 0 10px; font-size: clamp(2.3rem, 5vw, 4.7rem); line-height: 1.03; }
.cta p { margin: 0; color: #dae7ff; }

.page-hero { position: relative; padding: 90px 0 55px; }
.page-hero::after { content: ""; position: absolute; right: 3%; top: 50px; z-index: -1; width: 250px; height: 250px; border-radius: 50%; background: var(--sky); filter: blur(1px); opacity: .45; }
.page-hero h1 { max-width: 850px; margin-bottom: 20px; font-size: clamp(3rem, 6.5vw, 5.6rem); }
.page-hero h1 span { color: var(--cobalt); }
.page-hero p { max-width: 760px; color: var(--muted); font-size: 1.08rem; }
.meta { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.meta span { padding: 6px 11px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.55); font-size: .8rem; font-weight: 800; }
.policy-layout { display: grid; grid-template-columns: 245px minmax(0, 1fr); gap: 56px; align-items: start; padding-bottom: 110px; }
.toc { position: sticky; top: 102px; padding: 20px; border: 1.5px solid var(--ink); border-radius: 19px; background: var(--card); box-shadow: 5px 6px 0 var(--ink); }
.toc b { display: block; margin-bottom: 8px; }
.toc a { display: block; padding: 5px 0; color: var(--muted); text-decoration: none; font-size: .85rem; transition: color .2s, transform .2s; }
.toc a:hover, .toc a.active { color: var(--cobalt); transform: translateX(4px); }
.policy { min-width: 0; }
.policy section { padding: 34px 0; border-top: 1.5px solid var(--ink); scroll-margin-top: 100px; }
.policy section:first-child { border-top-width: 5px; }
.policy h2 { margin-bottom: 13px; font-size: clamp(1.65rem, 3vw, 2.3rem); }
.policy h3 { margin: 24px 0 8px; font-size: 1.12rem; }
.policy p, .policy li { color: #42545d; }
.policy li + li { margin-top: 7px; }
.callout { margin: 22px 0; padding: 19px 21px; border-left: 6px solid var(--yellow); border-radius: 0 14px 14px 0; background: #fff6cf; }
.data-table { width: 100%; margin: 18px 0; border-collapse: separate; border-spacing: 0; background: var(--card); overflow: hidden; border: 1px solid var(--line); border-radius: 14px; }
.data-table th, .data-table td { padding: 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table th { background: #e5f0ff; }
.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding-bottom: 110px; }
.support-card { padding: 0; border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card); overflow: hidden; transition: transform .2s, box-shadow .2s; }
.support-card:hover { transform: translateY(-4px); box-shadow: 6px 7px 0 var(--ink); }
.support-card h2 { margin: 0; font-size: 1.28rem; }
.support-card p { margin: 14px 0 0; color: var(--muted); }
.support-card.full { grid-column: 1 / -1; padding: 30px; background: var(--yellow); }
.support-card:not(.full) h2 { position: relative; padding: 24px 60px 24px 25px; cursor: pointer; }
.support-card:not(.full) h2::after { content: "+"; position: absolute; right: 24px; top: 22px; display: grid; width: 31px; height: 31px; place-items: center; border-radius: 50%; background: var(--paper); transition: transform .25s; }
.support-card:not(.full) p { max-height: 0; margin: 0; padding: 0 25px; opacity: 0; overflow: hidden; transition: max-height .35s ease, padding .35s, opacity .25s; }
.support-card.open h2::after { transform: rotate(45deg); }
.support-card.open p { max-height: 260px; padding: 0 25px 25px; opacity: 1; }

footer { padding: 33px 0 44px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer-brand { color: var(--ink); font-size: .86rem; }
.footer-brand img { width: 31px; height: 31px; border-radius: 9px; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { text-decoration: none; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes ping { 70% { box-shadow: 0 0 0 8px rgba(40,167,118,0); } }
@keyframes float { 50% { translate: 0 -8px; } }
@keyframes scrollCue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(10px); } }
@keyframes cardPop { 50% { transform: scale(.92); } 80% { transform: scale(1.05); } }
@keyframes flash { 0%, 100% { box-shadow: inset 0 0 0 0 rgba(255,255,255,0); } 45% { box-shadow: inset 0 0 0 500px rgba(255,255,255,.8); } }
@keyframes bubbleIn { from { opacity: 0; transform: translateY(15px) scale(.7); } }
@keyframes pulseBars { to { height: 14px; opacity: .5; } }
@keyframes labIn { from { opacity: 0; transform: translateY(12px) scale(.985); } }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 58px; }
  .hero-copy-block { max-width: 760px; }
  .hero-demo { width: min(610px, 92%); margin: 10px auto 0; }
  .experience-heading { grid-template-columns: 1fr; gap: 12px; }
  .truth-panel { grid-template-columns: 1fr 1fr; }
  .truth-panel .button { grid-column: 1 / -1; justify-self: start; }
  .simulator { grid-template-columns: 1fr; }
  .sim-copy { padding: 35px; }
  .step-nav { grid-template-columns: repeat(3, 1fr); }
  .step-tab { grid-template-columns: auto 1fr; padding: 14px; }
  .step-tab small { display: none; }
  .sim-tip { margin-top: 22px; }
  .lab-heading { grid-template-columns: 1fr; }
  .lab-shell { grid-template-columns: 220px minmax(0,1fr); }
  .lab-stage { grid-template-columns: 1fr; padding: 35px; }
  .lab-coach { width: min(480px,100%); margin-inline: auto; }
  .inventory-grid { grid-template-columns: repeat(2,1fr); }
  .promise-layout { grid-template-columns: 1fr; }
  .privacy-orbit { width: min(680px,100%); margin-inline: auto; }
  .policy-layout { grid-template-columns: 1fr; }
  .toc { position: static; columns: 2; }
}

@media (max-width: 700px) {
  .wrap, .narrow { width: min(100% - 28px, 1180px); }
  .nav { min-height: 67px; }
  .brand img { width: 38px; height: 38px; }
  .nav-links a:not(.nav-pill) { display: none; }
  .nav-pill { padding: 7px 11px; font-size: .8rem; }
  .hero-section { min-height: auto; }
  .hero { min-height: auto; padding: 52px 0 95px; gap: 55px; }
  h1 { font-size: clamp(3rem, 14vw, 4.6rem); }
  .hero-demo { width: 100%; }
  .proof-sheet { box-shadow: 10px 12px 0 var(--ink); transform: none; }
  .proof-sheet::after { font-size: 2.5rem; }
  .app-window { padding: 0 15px 18px; border-radius: 24px; box-shadow: 10px 12px 0 var(--ink); transform: none !important; }
  .app-chrome { margin-inline: -15px; padding-inline: 15px; }
  .student { min-height: 108px; }
  .student .avatar { width: 43px; height: 43px; }
  .floating-note { display: none; }
  .scroll-cue { display: none; }
  .experience-section, .feature-lab-section, .features-section, .promise { padding: 82px 0; }
  .experience-heading { margin-bottom: 32px; }
  .truth-panel { grid-template-columns: 1fr; }
  .truth-panel .button { grid-column: auto; }
  .simulator { min-height: 770px; border-radius: 26px; }
  .sim-copy { padding: 23px 15px 15px; }
  .step-nav { grid-template-columns: repeat(3, 1fr); gap: 5px; }
  .step-tab { display: flex; flex-direction: column; gap: 7px; padding: 11px 6px; text-align: center; align-items: center; }
  .step-tab.active { transform: translateY(-3px); }
  .step-tab > span { width: 32px; height: 32px; }
  .step-tab b { font-size: .8rem; }
  .sim-tip { display: none; }
  .phone-stage { min-height: 630px; }
  .phone { width: 294px; height: 590px; border-radius: 43px; }
  .phone-stage::before { width: 390px; height: 390px; }
  .phone-stage::after { width: 310px; height: 310px; }
  .demo-screen { padding: 53px 14px 15px; }
  .demo-student { min-height: 103px; }
  .camera-screen { padding: 0; }
  .lab-heading { gap: 25px; margin-bottom: 30px; }
  .lab-shell { display: block; min-height: 0; border-radius: 24px; box-shadow: 8px 9px 0 var(--ink); overflow: visible; }
  .lab-nav { flex-direction: row; gap: 7px; padding: 12px; border-radius: 22px 22px 0 0; overflow-x: auto; scrollbar-width: none; }
  .lab-nav::-webkit-scrollbar { display: none; }
  .lab-nav-head { display: none; }
  .lab-nav button { flex: 0 0 128px; grid-template-columns: 25px 1fr; padding: 10px; }
  .lab-nav button small { display: none; }
  .lab-stage { padding: 34px 12px 28px; border-radius: 0 0 22px 22px; }
  .lab-device { width: min(340px,calc(100vw - 54px)); height: 665px; border-radius: 43px; }
  .lab-coach { padding: 0 10px; }
  .inventory { margin-top: 60px; }
  .inventory-head { display: block; }
  .inventory-head p { margin-bottom: 0; }
  .inventory-grid { grid-template-columns: 1fr; }
  .inventory-grid article { min-height: 0; }
  .feature-grid { display: block; }
  .feature { min-height: 300px; margin-bottom: 17px; }
  .feature h3 { margin-top: 55px; }
  .privacy-orbit { min-height: 600px; }
  .privacy-orbit::before { width: 330px; height: 330px; }
  .privacy-orbit::after { width: 245px; height: 245px; }
  .orbit-core { width: 150px; height: 150px; }
  .orbit-core img { width: 44px; height: 44px; }
  .orbit-local { left: 0; top: 8%; }
  .orbit-manual { right: 0; top: 31%; }
  .orbit-share { left: 1%; bottom: 22%; }
  .cta { grid-template-columns: 1fr; padding: 36px 25px; border-radius: 25px; }
  .page-hero { padding-top: 60px; }
  .page-hero h1 { font-size: clamp(2.8rem, 14vw, 4.6rem); }
  .support-grid { grid-template-columns: 1fr; }
  .support-card.full { grid-column: auto; }
  .data-table { display: block; overflow-x: auto; }
  .toc { columns: 1; }
  .footer-row { align-items: flex-start; }
}

@media (hover: none) { .cursor-glow { display: none; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}