:root {
  --bg: #f7f8f5;
  --bg-2: #eef2ec;
  --panel: #ffffff;
  --line: #dde4dc;
  --text: #121820;
  --muted: #5f6c78;
  --mint: #6edebe;
  --green: #0b8a68;
  --text-2: #3b4652;
  --mint-ink: #06231b;
  --amber: #ffb547;
  --steam: #66c0f4;
  --cyan: #3cc8dc;
  --orange: #f0a83c;
  --radius: 22px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--mint); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -0.02em; }
h1 { font-size: clamp(40px, 4.3vw, 64px); font-weight: 800; }
h2 { font-size: clamp(32px, 4vw, 54px); font-weight: 800; }
h3 { font-size: 22px; font-weight: 750; line-height: 1.25; }
em { font-style: normal; color: var(--green); }
p { margin: 0 0 14px; }
.wrap { width: min(1200px, 100% - 40px); margin-inline: auto; }
.fine { color: var(--muted); font-size: 14px; }
.eyebrow { color: var(--green); font-size: 13px; font-weight: 750; letter-spacing: .14em; margin-bottom: 14px; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--mint); color: var(--mint-ink); padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip-link:focus { left: 8px; }

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; border: 0;
  background: var(--mint); color: var(--mint-ink); font-weight: 750; text-decoration: none;
  box-shadow: 0 10px 30px #6edebe33; transition: transform .15s, box-shadow .15s;
}
.button:hover { transform: translateY(-1px); box-shadow: 0 14px 36px #6edebe55; }
.button.small { padding: 9px 18px; font-size: 15px; box-shadow: none; }
.button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }
.button.ghost:hover { border-color: var(--mint); }
.text-link { color: var(--green); font-weight: 650; text-decoration: none; }
.text-link:hover { text-decoration: underline; }

/* Header */
.header { position: sticky; top: 0; z-index: 20; background: #f7f8f5d9; backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 21px; letter-spacing: -.01em; }
.brand img { border-radius: 9px; }
.brand b { color: var(--green); }
.header nav { display: flex; gap: 24px; margin-left: auto; }
.header nav a { text-decoration: none; color: var(--muted); font-size: 15px; font-weight: 600; }
.header nav a:hover { color: var(--text); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.language-toggle { color: var(--muted); text-decoration: none; font-size: 15px; }
.language-toggle:hover { color: var(--text); }

/* Portable AR + AI PC */
.hero { position: relative; overflow: hidden; padding: 88px 0 0; background: #0b211d; color: #f4faf7; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse at 83% 45%, #236c5866, transparent 65%); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.2fr); gap: 56px; align-items: center; padding-bottom: 64px; }
.hero .eyebrow { color: #a1c6b9; font-size: 12px; letter-spacing: .18em; }
.hero h1 { margin-bottom: 26px; font-size: clamp(56px, 6.2vw, 88px); letter-spacing: -.055em; line-height: .99; }
.hero em { color: var(--mint); }
.lead { font-size: clamp(18px, 1.6vw, 21px); color: var(--text-2); max-width: 34em; }
.hero .lead { color: #c5d8d0; font-size: 19px; line-height: 1.7; }
.hero-capabilities { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 26px 0 32px; font-size: 14px; }
.hero-capabilities a { color: #c2f2df; text-decoration: none; border-bottom: 1px solid #6edebe60; padding-bottom: 4px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-bottom: 18px; }
.hero .text-link { color: var(--mint); }
.proof { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 0; margin: 28px 0 14px; }
.proof li { color: #b0c8bd; font-size: 13px; }
.proof li::before { content: "✓"; color: var(--mint); margin-right: 6px; }
.release-line { margin-bottom: 4px; }
.release-line strong { color: var(--text); font-weight: 650; }
.hero .fine { color: #a8bfb5; font-size: 12px; }
.hero .release-line strong { color: #e2eee8; }
.hero-compat { text-underline-offset: 3px; }
.hero-shot { margin: 0; min-width: 0; }
.spatial-frame { padding: 10px; border: 1px solid #b3f0d955; border-radius: 16px; background: #d1fff010; box-shadow: 0 35px 80px #0005; transform: perspective(1400px) rotateY(-7deg) rotateX(2deg); }
.frame-label { display: flex; justify-content: space-between; padding: 1px 5px 10px; gap: 12px; font: 10px/1.5 ui-monospace, monospace; letter-spacing: .05em; color: #bbd9ce; }
.device { border-radius: 6px; overflow: hidden; background: #141b21; }
.device img { width: 100%; }
.spatial-axis { display: flex; justify-content: space-between; align-items: center; margin-top: 28px; padding: 0 16px; color: #9bbeb0; font: 10px/1.6 ui-monospace, monospace; letter-spacing: .14em; }
.spatial-axis span:nth-child(2) { font-size: 16px; color: var(--mint); }
.hero-shot figcaption { color: #a8c2b6; font-size: 12px; margin: 14px auto 0; max-width: 42em; text-align: center; }
.hero-bottom { position: relative; padding-block: 20px; border-top: 1px solid #b4dec52b; display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; font-size: 14px; color: #b8cfc4; }
.home .header nav { gap: 20px; }
.spatial-requirements { margin-top: 18px; }
.hero-bottom a { color: var(--mint); text-decoration: none; }
.assistants .section-heading > p:last-child { margin-top: 24px; color: var(--text-2); max-width: 650px; font-size: 19px; }
.assistant-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: center; }
.assistant-choice { display: flex; gap: 36px; border-bottom: 1px solid var(--line); padding-bottom: 24px; margin-bottom: 28px; }
.assistant-choice h3 { font-size: 26px; margin-top: 10px; }
.agent-actions { list-style: none; padding: 0; margin: 0; counter-reset: capability; }
.agent-actions li { position: relative; padding-left: 36px; margin-bottom: 24px; counter-increment: capability; }
.agent-actions li::before { content: "0" counter(capability); position: absolute; left: 0; top: 1px; font: 13px/1.6 ui-monospace, monospace; color: var(--green); }
.agent-actions h3 { font-size: 19px; margin-bottom: 7px; }
.agent-actions p { color: var(--text-2); font-size: 16px; margin: 0; }
.assistant-example { margin: 0; }
.assistant-example img { border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 60px #17392b18; }
.assistant-example figcaption { margin-top: 16px; color: var(--muted); font-size: 14px; }
.agent-entry { display: flex; align-items: center; gap: 26px; padding: 26px 30px; margin: 36px 0 16px; background: #e6efe7; border-radius: 16px; }
.edge-symbol { display: block; flex: 0 0 5px; height: 52px; background: var(--green); border-radius: 8px; }
.agent-entry h3 { font-size: 21px; margin-bottom: 7px; }
.agent-entry p { color: var(--text-2); margin: 0; font-size: 15px; max-width: 650px; }
.agent-entry a { margin-left: auto; flex-shrink: 0; font-size: 14px; }
.model-coverage { margin-top: 36px; border-block: 1px solid var(--line); padding: 20px 0 6px; }
.model-coverage h3 { margin-bottom: 20px; }
.model-coverage .fine { margin-top: 18px; }
.glasses-compat { padding-block: 36px; border-bottom: 1px solid var(--line); }
.glasses-compat h2 { font-size: 28px; margin-bottom: 10px; }
.glasses-compat > p { color: var(--text-2); }
.brand-shortcuts { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin: 22px 0 16px; }
.brand-shortcuts a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; padding: 20px 12px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); text-decoration: none; }
.brand-shortcuts a:hover { border-color: var(--green); background: #e6efe7; }
.brand-shortcuts .brand-logo { object-position: center; max-width: 100%; }
.brand-shortcuts span { font-size: 14px; font-weight: 650; }
.glasses-brand { scroll-margin-top: 116px; }
@media (max-width: 720px) {
  .brand-shortcuts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .brand-shortcuts a:last-child { grid-column: 1 / -1; }
  .glasses-compat h2 { font-size: 26px; }
}

.home .supporting-features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
html:lang(zh) .hero h1 { font-size: clamp(40px, 4.6vw, 65px); line-height: 1.18; letter-spacing: -.025em; }
@media (max-width: 1000px) {
  .assistant-layout { grid-template-columns: 1fr 1fr; gap: 30px; }
  .hero-grid { padding-bottom: 38px; }
  .home .header-row { height: auto; min-height: 64px; flex-wrap: wrap; gap: 10px 20px; padding-block: 12px 0; }
  .home .header nav { display: flex; order: 3; width: 100%; overflow-x: auto; padding-bottom: 12px; gap: 22px; }
  .home .header nav a { flex-shrink: 0; font-size: 13px; }
  .home section { scroll-margin-top: 36px; }
  .spatial-frame { transform: none; }
  .hero-shot { max-width: 760px; }
  .agent-entry { flex-wrap: wrap; }
  .agent-entry a { margin-left: 31px; }
}
@media (max-width: 720px) {
  .assistant-layout, .home .supporting-features { grid-template-columns: 1fr; }
  .hero-grid { gap: 36px; }
  .hero h1 { font-size: 64px; }
  .hero .lead { font-size: 18px; }
  .hero-bottom { font-size: 12px; }
  .assistant-choice { gap: 36px; }
  .agent-entry { gap: 18px; padding: 22px; }
  .agent-entry > div { flex: 1; min-width: 0; }
  .agent-entry a { margin-left: 23px; }
  .frame-label { font-size: 8px; }
}

/* Sections */
section { padding: 96px 0; }
.hero, .yibu, .watch, .controls, .help { padding-left: 0; padding-right: 0; }
.section-heading { max-width: 760px; margin-bottom: 44px; }
.section-heading.split { max-width: none; display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; }

.yibu { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 56px; align-items: center; border-top: 1px solid var(--line); }
.yibu h2 { margin-bottom: 20px; }
.yibu-copy > p { color: var(--text-2); font-size: 18px; }
.yibu-points { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 12px; }
.yibu-points li { padding: 14px 16px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); color: var(--text-2); }
.yibu-points b { color: var(--text); }
.shot { margin: 0; }
.shot img { border-radius: 18px; border: 6px solid #1c232c; box-shadow: 0 30px 60px #1a2a3a33; }

.features { background: var(--bg-2); border-block: 1px solid var(--line); }
.feature { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; overflow: hidden; }
.feature > img { border-radius: 14px; margin: -6px -6px 20px; width: calc(100% + 12px); max-width: none; aspect-ratio: 2.15 / 1; object-fit: cover; object-position: left top; }
.feature h3 { margin-bottom: 10px; }
.feature p { color: var(--text-2); }
.feature .fine { color: var(--muted); margin: 0; }
.feature-wide { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 36px; align-items: center; padding: 36px; }
.feature-wide h3 { font-size: clamp(28px, 3vw, 40px); margin-bottom: 14px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 20px 0; }
.steam { background: linear-gradient(135deg, #1b2838, #2a475e); border-color: #2a475e; color: #e8f1f8; }
.steam p { color: #c7d5e0; } .steam .fine { color: #9fb3c4; }
.steam h3 { color: var(--steam); }
.tag { display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .1em; padding: 4px 10px; border-radius: 999px; margin-bottom: 16px; }
.tag-new { background: var(--steam); color: #04131d; }
.pair { display: grid; grid-template-columns: 1.3fr 1fr; gap: 14px; align-items: center; }
.pair img { border-radius: 14px; border: 1px solid #ffffff1a; }
.pair img:last-child { transform: translateY(26px); box-shadow: 0 20px 40px #0009; }
.voice-card { aspect-ratio: 2.15 / 1; margin: -6px -6px 20px; border-radius: 14px; background: radial-gradient(circle at 85% 50%, #6edebe30, transparent 55%), #0d1218; display: flex; align-items: center; padding: 24px 56px 24px 28px; position: relative; }
.voice-card p { margin: 0; font-size: clamp(19px, 2vw, 26px); font-weight: 750; color: #ecf1f7; max-width: 15em; }
.voice-bar { position: absolute; right: 22px; top: 30%; height: 40%; width: 7px; border-radius: 4px; background: #fff; box-shadow: 0 0 0 8px #ffffff1a, 0 0 30px #6edebe; }
.screen-strip { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr) minmax(0, 1fr); gap: 28px; align-items: center; padding: 26px 30px; }
.screen-strip h3, .screen-strip p { margin: 0; }
@media (max-width: 1000px) { .screen-strip { grid-template-columns: 1fr; gap: 10px; } }

/* Videos */
.reel { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.short video { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; border-radius: 18px; background: #000; border: 1px solid var(--line); }
.short p { margin: 12px 2px 0; font-size: 15px; font-weight: 650; line-height: 1.35; }

/* Get started */
.start { background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-top: 1px solid var(--line); }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.steps li { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.step-no { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--mint); color: var(--mint-ink); font-weight: 800; margin-bottom: 18px; }
.steps h3 { margin-bottom: 10px; }
.steps p { color: var(--text-2); }
.steps .button { margin-top: 6px; }
.download-options { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.requirements { margin-top: 24px; }

/* Controls */
.control-shot { margin: 0 auto 26px; }
.control-shot .guide-image { border: 8px solid #1c232c; border-radius: 22px; box-shadow: 0 24px 48px #1a2a3a2e; }
.control-shot figcaption { color: var(--muted); font-size: 14px; margin-top: 12px; text-align: center; }
.pin-glow { animation: pin-pulse 1.8s ease-in-out infinite; }
@keyframes pin-pulse { 0%,100% { box-shadow: 0 2px 8px #0008, 0 0 0 0 #6edebeaa; } 50% { box-shadow: 0 2px 8px #0008, 0 0 0 10px #6edebe00; } }
.control-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-bottom: 44px; }
.control-cards article { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.control-cards h3 { margin: 0 0 8px; font-size: 20px; }
.control-cards p { margin: 0; color: var(--text-2); }
.step-no.small { width: 30px; height: 30px; font-size: 15px; margin-bottom: 12px; background: var(--green); color: #fff; }
.mode-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin-bottom: 26px; align-items: start; }
.mode-grid article { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.mode-grid h3 { margin: 0 0 8px; font-size: 19px; }
.mode-grid p { margin: 0; color: var(--text-2); font-size: 15px; }
.mode-shot img { border-radius: 12px; border: 4px solid #1c232c; margin-bottom: 16px; aspect-ratio: 2.1 / 1; object-fit: cover; width: 100%; }
@media (max-width: 1000px) { .mode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 720px) { .control-cards, .mode-grid { grid-template-columns: 1fr; } .control-shot .guide-image { border-width: 5px; border-radius: 14px; } }

/* Annotated screenshots (home controls and yibu.html) */
.guide-image { position: relative; display: block; border-radius: 12px; overflow: hidden; background: #111; }
.guide-image img { display: block; width: 100%; height: auto; }
.guide-pin { position: absolute; transform: translate(-50%,-50%); width: 28px; height: 28px; display: grid; place-items: center; border: 2px solid white; border-radius: 50%; background: var(--green); color: #fff; font: bold 14px/1 system-ui; box-shadow: 0 2px 8px #0008; }

/* Runtime comparison: bars share a zero origin and a single time scale. */
.performance { border-top: 1px solid var(--line); }
.performance-intro { max-width: 850px; color: var(--text-2); }
.benchmark { margin: 28px 0 20px; padding: clamp(18px, 3vw, 36px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.benchmark figcaption p { margin-top: 12px; color: var(--muted); }
.benchmark-row { display: grid; grid-template-columns: 150px minmax(0, 1fr) 80px; align-items: center; gap: 14px; margin: 16px 0; font-size: 15px; }
.benchmark-row strong { text-align: right; font-variant-numeric: tabular-nums; }
.benchmark-track { background: var(--bg-2); border-radius: 4px; overflow: hidden; }
.benchmark-bar { height: 24px; }
.benchmark-ar { width: 54.95%; background: var(--green); }
.benchmark-proot { width: 100%; background: #78838d; }
.benchmark-chroot { width: 44.70%; background: var(--mint); }
.benchmark-result { margin: 24px 0 0; color: var(--text-2); }
.benchmark-result strong { color: var(--green); }
.benchmark-details { border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px; }
.benchmark-details summary { cursor: pointer; font-weight: 650; }
.benchmark-table-wrap { overflow-x: auto; margin: 16px 0; }
.benchmark-table { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.benchmark-table caption { text-align: left; color: var(--muted); margin-bottom: 12px; }
.benchmark-table th, .benchmark-table td { padding: 10px; border-bottom: 1px solid var(--line); text-align: right; }
.benchmark-table th:first-child { text-align: left; min-width: 170px; }
.benchmark-details p { color: var(--text-2); font-size: 15px; }
.performance-method { margin-top: 20px; }
.performance-links { display: flex; gap: 12px 24px; flex-wrap: wrap; }
@media (max-width: 720px) {
  .benchmark-row { grid-template-columns: 105px minmax(0, 1fr) 66px; gap: 8px; font-size: 12px; }
}

/* Help */
.help { border-top: 1px solid var(--line); }
.faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; align-items: start; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 4px 20px; }
.faq details[open] { border-color: var(--mint); }
.faq summary { cursor: pointer; padding: 14px 0; font-weight: 700; list-style-position: outside; }
.faq details p { color: var(--text-2); }
.distro-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 6px 0 18px; }
.distro-grid a { display: block; padding: 22px 24px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; background: var(--bg-2); }
.distro-grid a:hover { border-color: var(--mint); }
.distro-grid strong { display: block; font-size: 22px; }
.distro-download { display: block; margin-top: 16px; color: var(--green); }
.distro-grid span { color: var(--muted); font-size: 13px; }

/* Open source */
.open-source { background: var(--bg-2); border-top: 1px solid var(--line); }
.open-source-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-bottom: 36px; }
.open-source-intro p:not(.eyebrow) { color: var(--text-2); font-size: 18px; }
.repo-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 28px; }
.repo-list a { padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; text-decoration: none; background: var(--panel); }
.repo-list a:hover { border-color: var(--mint); }
.repo-list strong { display: block; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 15px; }
.repo-list span { color: var(--muted); font-size: 14px; }
.builder-actions { margin-bottom: 24px; }
.source-credit { color: var(--muted); font-size: 14px; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 36px 0 48px; }
.footer-row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.footer-row p { margin: 0; color: var(--muted); }
.footer-row div { margin-left: auto; display: flex; gap: 20px; }
.footer-row div a { color: var(--muted); text-decoration: none; }
.footer-row div a:hover { color: var(--text); }

html:lang(zh) h1, html:lang(zh) h2, html:lang(zh) h3 { letter-spacing: 0; line-height: 1.22; }
html:lang(zh) .eyebrow { letter-spacing: .08em; }
html:lang(zh) h1 { font-size: clamp(32px, 3.5vw, 52px); }
html:lang(zh) h2 { font-size: clamp(28px, 3.2vw, 44px); }

@media (max-width: 1000px) {
  .hero-grid, .yibu, .feature-wide, .open-source-intro { grid-template-columns: 1fr; gap: 36px; }
  .device { transform: none; }
  .reel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: 1fr; }
  .header nav { display: none; }
  .header-actions { margin-left: auto; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { width: calc(100% - 32px); }
  section { padding: 64px 0; }
  .hero { padding: 40px 0 56px; }
  .feature-grid, .faq, .repo-list, .distro-grid { grid-template-columns: 1fr; }
  .feature-wide { padding: 22px; }
  .pair img:last-child { transform: none; }
  .footer-row div { margin-left: 0; }
}
@media (max-width: 420px) {
  .reel { grid-template-columns: 1fr 1fr; gap: 12px; }
  .short p { font-size: 13px; }
  .brand span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pin-glow { animation: none; }
  .button { transition: none; }
}

.map-lead { color: var(--text-2); margin-bottom: 18px; }


/* Guide page (yibu.html) */
.doc { max-width: 980px; padding: 40px 0 80px; }
.doc section { padding: 56px 0 0; }
.doc h1 { margin-bottom: 14px; }
.doc h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 22px; }
.doc h3 { margin: 30px 0 8px; }
.crumb a { color: var(--green); text-decoration: none; font-weight: 650; font-size: 15px; }
.annotated { margin: 0 0 18px; }
.annotated .guide-image, .pair-shots .guide-image { border: 6px solid #1c232c; border-radius: 16px; box-shadow: 0 20px 40px #1a2a3a26; }
.legend { margin: 0 0 30px; padding-left: 26px; color: var(--text-2); }
.legend li { margin-bottom: 10px; padding-left: 4px; }
.legend b { color: var(--text); }
.legend.letters { list-style: none; padding-left: 0; }
.tip { padding: 14px 18px; border-left: 3px solid var(--mint); background: #6edebe22; border-radius: 0 12px 12px 0; color: var(--text-2); }
.pair-shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-bottom: 22px; }
.pair-shots figure { margin: 0; }
.pair-shots figcaption { color: var(--text-2); font-size: 15px; margin-top: 12px; }
.pair-shots figcaption b { color: var(--text); }
.guide-link { margin-top: 18px; }
@media (max-width: 720px) { .pair-shots { grid-template-columns: 1fr; } .doc .guide-pin { width: 22px; height: 22px; font-size: 11px; } }
.start-split { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 40px; align-items: start; margin-bottom: 22px; }
.phone-shot .guide-image { border-width: 8px; border-radius: 28px; }
.start-split .legend { margin-top: 8px; }
.doc .mode-grid { margin: 8px 0 22px; }
@media (max-width: 720px) { .start-split { grid-template-columns: 1fr; } .phone-shot { max-width: 300px; margin: 0 auto; } }
.pin-row { position: relative; height: 34px; margin: 0 6px 4px; }
.pin-row .guide-pin { top: 50%; }


.windows { margin-top: 20px; }
.windows .feature-media img { border-radius: 14px; border: 1px solid var(--line); }
.tag-exp { background: #ffb54733; color: #7a4a00; }


/* 0.4 redesign: kinds, two desktops, app grid */
.kinds { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 22px 0 0; }
.kinds li { padding: 8px 16px; border-radius: 12px; font-weight: 800; font-size: 16px; color: #fff; }
.k-android { background: #2e9e5b; color: #fff; }
.k-linux { background: #1f6fd1; color: #fff; }
.k-windows { background: #0b74c4; background: linear-gradient(135deg, #0078d4, #00a2ed); color: #fff; }
.k-steam { background: #1b2838; color: #fff; }
.desktops { border-top: 1px solid var(--line); }
.desktop-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.desk-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.desk-shot img { border-radius: 14px; border: 6px solid #1c232c; width: 100%; aspect-ratio: 2.05 / 1; object-fit: cover; object-position: center top; margin-bottom: 18px; }
.desk-card h3 { margin-bottom: 12px; font-size: 24px; }
.tag-default { background: #6edebe33; color: #075c46; }
.tag-classic { background: #1f6fd122; color: #134a8f; }
.ticks { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 8px; }
.ticks li { padding-left: 26px; position: relative; color: var(--text-2); }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.apps-shot { margin: 0 0 28px; }
.apps-shot img { width: 100%; border-radius: 16px; border: 6px solid #1c232c; box-shadow: 0 24px 48px #1a2a3a26; max-width: 820px; margin: 0 auto; }
.kind-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.kind-card .tag { margin-bottom: 10px; }
.more-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 20px; }
.more-card h3 { font-size: 19px; }
@media (max-width: 900px) { .desktop-pair, .kind-grid, .more-grid { grid-template-columns: 1fr; } }

.glasses { border-top: 1px solid var(--line); }
.spatial-details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; margin-bottom: 32px; color: var(--text-2); }
.glasses-models-title { margin-bottom: 20px; }
.glasses-brands { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.glasses-brand { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.brand-heading { display: flex; align-items: center; gap: 20px; margin-bottom: 16px; }
.brand-logo { width: 128px; height: 40px; object-fit: contain; object-position: left center; }
.brand-white { filter: invert(1); }
.brand-heading h3 { font-size: 19px; margin: 0; }
.glasses-brand p { margin: 0; color: var(--text-2); }
@media (max-width: 720px) { .spatial-details, .glasses-brands { grid-template-columns: 1fr; } .brand-heading { flex-wrap: wrap; gap: 12px; } }
.tested { margin: -14px 0 26px; color: var(--text-2); font-size: 14px; line-height: 1.5; }
.tested b { color: var(--text); margin-right: 6px; }
.glasses-shots { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin: 8px 0 10px; }
.glasses-shots figure { margin: 0; }
.glasses-shots img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; background: #000; border: 1px solid var(--line); }
.glasses-shots figcaption { margin-top: 10px; font-size: 14px; font-weight: 600; color: var(--text-2); }
.glasses-shots-note { margin-bottom: 30px; }
@media (max-width: 720px) { .glasses-shots { grid-template-columns: 1fr; } }
.oib-banner { display: block; width: 100%; padding: 10px 16px; border: 0; background: #ffb547; color: #2a1a00; font: inherit; font-size: 14px; font-weight: 650; text-align: center; cursor: pointer; }
.open-in-browser { position: fixed; inset: 0; z-index: 1000; background: rgba(8, 10, 14, .94); color: #fff; }
.open-in-browser[hidden] { display: none; }
.oib-arrow { position: absolute; top: 6px; right: 18px; width: 110px; height: 138px; color: #6edebe; }
.oib-card { position: absolute; top: 150px; left: 24px; right: 24px; max-width: 420px; margin-left: auto; }
.oib-title { margin: 0 0 18px; font-size: 22px; font-weight: 750; }
.oib-step { margin: 0 0 10px; font-size: 18px; line-height: 1.5; }
.oib-copy { margin-top: 18px; padding: 10px 18px; border: 1px solid #6edebe; border-radius: 999px; background: transparent; color: #6edebe; font: inherit; font-size: 15px; cursor: pointer; }
.oib-close { margin-top: 26px; color: #aab4be; font-size: 14px; }