:root {
  --ink: #f7f8fa;
  --muted: #9aa5b1;
  --muted-strong: #c4ccd4;
  --bg: #111820;
  --surface: #18212b;
  --surface-2: #202c38;
  --line: rgba(213, 222, 230, 0.16);
  --accent: #e86f2d;
  --accent-soft: #ffb184;
  --max: 1180px;
  color-scheme: dark;
  font-family: "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.page-shell { width: min(100% - 48px, var(--max)); margin: 0 auto; }
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0 18px; border-bottom: 1px solid var(--line);
}
.brand { color: var(--accent-soft); font-size: 14px; letter-spacing: .18em; font-weight: 800; }
.main-nav { display: flex; gap: 28px; font-size: 14px; color: var(--muted-strong); }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--accent-soft); }
.hero {
  min-height: 560px; display: grid; grid-template-columns: minmax(0, 1fr) 390px;
  align-items: center; gap: 72px; padding: 84px 0 70px;
}
.eyebrow { margin: 0 0 14px; color: var(--accent-soft); font-size: 12px; letter-spacing: .17em; font-weight: 800; }
.eyebrow-dot { display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px rgba(232,111,45,.14); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 660px; margin-bottom: 0; font-size: clamp(60px, 9vw, 124px); line-height: .94; letter-spacing: -.07em; font-weight: 800; }
.hero-role { margin: 20px 0 22px; color: var(--muted-strong); font-size: clamp(20px, 3vw, 30px); letter-spacing: -.04em; }
.hero-role span { padding: 0 8px; color: var(--accent); }
.hero-intro { max-width: 550px; margin-bottom: 30px; color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; gap: 16px; min-height: 48px; padding: 0 18px; border: 1px solid var(--line); font-size: 14px; font-weight: 800; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); border-color: var(--accent); }
.button-primary { background: var(--accent); color: #161b20; border-color: var(--accent); }
.button-primary:hover, .button-primary:focus-visible { background: var(--accent-soft); border-color: var(--accent-soft); }
.button-quiet { color: var(--muted-strong); }
.hero-mark { position: relative; aspect-ratio: 1; overflow: hidden; background: var(--surface); border: 1px solid var(--line); }
.hero-mark-grid { position: absolute; inset: 0; opacity: .35; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 38px 38px; }
.hero-mark::before, .hero-mark::after { position: absolute; content: ""; background: var(--accent); }
.hero-mark::before { width: 75%; height: 2px; left: 12%; top: 26%; box-shadow: 0 164px 0 var(--accent); }
.hero-mark::after { width: 2px; height: 75%; left: 26%; top: 12%; box-shadow: 164px 0 0 var(--accent); }
.hero-mark-inner { position: absolute; inset: 23%; display: grid; place-items: center; border: 1px solid rgba(255,177,132,.55); transform: rotate(45deg); }
.hero-mark-inner span { transform: rotate(-45deg); font-size: 14px; letter-spacing: .22em; color: var(--accent-soft); }
.hero-mark-inner i { position: absolute; width: 10px; height: 10px; right: 12%; top: 12%; border-radius: 50%; background: var(--accent); transform: rotate(-45deg); }
.hero-mark-caption { position: absolute; right: 20px; bottom: 18px; color: var(--muted); font-size: 10px; letter-spacing: .16em; writing-mode: vertical-rl; }
.quick-facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quick-facts > div { min-height: 128px; padding: 24px 28px; border-right: 1px solid var(--line); }
.quick-facts > div:last-child { border-right: 0; }
.fact-label { display: block; margin-bottom: 10px; color: var(--accent-soft); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; font-weight: 800; }
.quick-facts strong { color: var(--muted-strong); font-size: 15px; line-height: 1.6; font-weight: 600; }
.work-section, .about-section, .contact-section { padding: 110px 0 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
h2 { margin-bottom: 0; color: var(--ink); font-size: clamp(32px, 5vw, 56px); line-height: 1.06; letter-spacing: -.06em; }
.section-note { max-width: 260px; margin-bottom: 4px; color: var(--muted); font-size: 13px; }
.category-jump { display: flex; gap: 8px; margin-bottom: 42px; overflow-x: auto; padding: 2px 2px 12px; scrollbar-width: thin; scrollbar-color: rgba(255,177,132,.5) transparent; }
.category-jump::-webkit-scrollbar, .video-rail::-webkit-scrollbar { height: 6px; }
.category-jump::-webkit-scrollbar-thumb, .video-rail::-webkit-scrollbar-thumb { background: rgba(255,177,132,.5); border-radius: 999px; }
.category-jump-link { flex: 0 0 auto; padding: 8px 12px; border: 1px solid var(--line); color: var(--muted-strong); font-size: 12px; white-space: nowrap; transition: border-color .2s ease, color .2s ease, background .2s ease; }
.category-jump-link:hover, .category-jump-link:focus-visible { border-color: var(--accent-soft); background: rgba(232,111,45,.12); color: var(--ink); }
.category-rails { display: grid; gap: 54px; min-width: 0; }
.category-rail-section { min-width: 0; scroll-margin-top: 22px; }
.category-rail-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 18px; }
.category-rail-heading .eyebrow { margin-bottom: 8px; }
.category-rail-heading h3 { margin: 0; color: var(--ink); font-size: clamp(24px, 3vw, 36px); line-height: 1.12; letter-spacing: -.05em; }
.category-rail-count { flex: 0 0 auto; margin: 0 0 3px; color: var(--muted); font-size: 12px; }
.video-rail { display: flex; width: 100%; min-width: 0; gap: 14px; overflow-x: auto; padding: 2px 2px 16px; scroll-snap-type: x proximity; overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: rgba(255,177,132,.5) transparent; }
.work-card { flex: 0 0 clamp(180px, 18vw, 230px); min-height: 0; display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); background: var(--surface); scroll-snap-align: start; transition: border-color .2s ease, transform .2s ease; }
.work-card:hover { border-color: rgba(255,177,132,.7); transform: translateY(-3px); }
.work-card[hidden] { display: none; }
.card-visual { position: relative; aspect-ratio: 9 / 16; padding: 16px; display: flex; align-items: flex-end; background: linear-gradient(135deg, #253746 0%, #18212b 60%, #2c2422 100%); }
.work-card:nth-child(3n + 2) .card-visual { background: linear-gradient(135deg, #3b3032, #1c2934 70%, #18212b); }
.work-card:nth-child(3n + 3) .card-visual { background: linear-gradient(135deg, #1e3036, #18212b 65%, #3a2b23); }
.card-visual::after { position: absolute; content: ""; inset: 16px; border: 1px solid rgba(255,255,255,.13); }
.card-code { position: relative; z-index: 1; color: rgba(255,255,255,.65); font-size: 11px; letter-spacing: .2em; }
.card-play { position: absolute; z-index: 1; top: 16px; right: 16px; width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.34); border-radius: 50%; color: var(--accent-soft); font-size: 13px; }
.card-video { position: absolute; z-index: 2; inset: 0; width: 100%; height: 100%; object-fit: cover; background: #0b1015; }
.video-card[data-group="live 图"] .card-video { object-fit: contain; }
.card-visual[data-has-video]::after { z-index: 3; pointer-events: none; }
.card-visual[data-has-video] .card-code { z-index: 4; }
.card-body { flex: 1; padding: 18px 18px 17px; }
.card-index { color: var(--accent); font-size: 11px; letter-spacing: .14em; }
.card-title { margin: 5px 0 10px; color: var(--ink); font-size: 18px; line-height: 1.3; letter-spacing: -.03em; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 12px; }
.card-status { color: var(--accent-soft); }
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.process-item { padding: 26px 26px 0 0; border-right: 1px solid var(--line); }
.process-item + .process-item { padding-left: 26px; }
.process-item:last-child { border-right: 0; }
.process-item span { color: var(--accent); font-size: 12px; letter-spacing: .14em; }
.process-item h3 { margin: 16px 0 8px; color: var(--ink); font-size: 22px; letter-spacing: -.04em; }
.process-item p { margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.contact-section { display: grid; grid-template-columns: 1fr 310px; align-items: end; gap: 60px; padding-bottom: 110px; }
.contact-card { padding: 22px; border: 1px solid var(--line); background: var(--surface); }
.contact-layout { display: flex; align-items: center; gap: 20px; }
.wechat-qr { width: 116px; height: 116px; flex: 0 0 auto; padding: 7px; background: #fff; object-fit: contain; }
.contact-card p { margin: 0 0 7px; color: var(--ink); font-size: 18px; }
.contact-card a:hover, .contact-card a:focus-visible { color: var(--accent-soft); }
.contact-card small { color: var(--muted); font-size: 13px; }
.site-footer { display: flex; justify-content: space-between; padding: 22px 0 28px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; letter-spacing: .06em; }
:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 4px; }
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 44px; padding-top: 64px; }
  .hero-mark { width: min(100%, 420px); }
  .category-rails { gap: 44px; }
  .work-card { flex-basis: clamp(170px, 24vw, 210px); }
}
@media (max-width: 620px) {
  .page-shell { width: min(100% - 32px, var(--max)); }
  .site-header { padding-top: 18px; }
  .main-nav { gap: 14px; font-size: 12px; }
  .hero { min-height: auto; padding: 62px 0 52px; }
  h1 { font-size: clamp(56px, 18vw, 86px); }
  .hero-role { font-size: 21px; }
  .hero-intro { font-size: 15px; }
  .hero-mark { width: 100%; }
  .quick-facts { grid-template-columns: 1fr; }
  .quick-facts > div { min-height: 0; padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .quick-facts > div:last-child { border-bottom: 0; }
  .work-section, .about-section, .contact-section { padding-top: 78px; }
  .section-heading { display: block; margin-bottom: 22px; }
  .section-note { margin-top: 14px; }
  .category-jump { margin-bottom: 34px; }
  .category-rails { gap: 38px; }
  .category-rail-heading { display: block; margin-bottom: 14px; }
  .category-rail-heading h3 { font-size: 25px; }
  .category-rail-count { margin-top: 8px; }
  .video-rail { gap: 10px; padding-bottom: 12px; }
  .work-card { flex-basis: min(43vw, 168px); }
  .card-visual { aspect-ratio: 9 / 16; }
  .card-body { padding: 12px 11px 13px; }
  .card-title { margin: 4px 0 8px; font-size: 14px; }
  .card-meta { display: block; font-size: 11px; line-height: 1.5; }
  .card-meta .card-status { display: block; margin-top: 2px; }
  .process-grid { grid-template-columns: 1fr; }
  .process-item, .process-item + .process-item { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-item:last-child { border-bottom: 0; }
  .contact-section { grid-template-columns: 1fr; gap: 26px; padding-bottom: 78px; }
  .contact-layout { align-items: flex-start; }
  .wechat-qr { width: 104px; height: 104px; }
}