:root {
  --bg: #050915;
  --panel: rgba(13, 24, 49, 0.78);
  --panel-strong: rgba(21, 35, 73, 0.92);
  --text: #eef5ff;
  --muted: #9db0d1;
  --line: rgba(126, 189, 255, 0.18);
  --blue: #3fd5ff;
  --purple: #9b68ff;
  --pink: #e36bff;
  --green: #79ffcf;
  --shadow: 0 24px 80px rgba(20, 109, 255, 0.18);
  --radius: 28px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 10%, rgba(63, 213, 255, .18), transparent 26rem),
    radial-gradient(circle at 80% 8%, rgba(155, 104, 255, .22), transparent 24rem),
    linear-gradient(180deg, #050915 0%, #071020 58%, #050915 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(5, 9, 21, .78);
  border-bottom: 1px solid var(--line);
}
.nav-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: .08em;
}
.brand-orb {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: conic-gradient(from 180deg, var(--blue), var(--purple), var(--pink), var(--blue));
  box-shadow: 0 0 32px rgba(63, 213, 255, .45);
  position: relative;
}
.brand-orb::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 8px;
  background: #050915;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.nav-links a {
  padding: 11px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}
.nav-links a:hover {
  color: var(--text);
  background: rgba(63, 213, 255, .1);
}
.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 12px;
}
.search-strip {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}
.fake-search {
  display: flex;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px;
}
.fake-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
  padding: 10px 14px;
}
.fake-search button, .btn {
  border: 0;
  color: #05101e;
  background: linear-gradient(135deg, var(--blue), var(--green));
  border-radius: 999px;
  padding: 11px 18px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 12px 36px rgba(63, 213, 255, .28);
}
.search-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
main {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}
.hero {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 34px;
  align-items: center;
  padding: 82px 0 56px;
}
.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--green);
  border: 1px solid rgba(121,255,207,.28);
  background: rgba(121,255,207,.08);
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 14px;
  margin: 0 0 18px;
}
h1, h2, h3, h4, h5, h6 { line-height: 1.18; margin: 0; }
h1 {
  font-size: clamp(38px, 6vw, 72px);
  letter-spacing: -0.06em;
  max-width: 760px;
}
h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -0.04em; }
h3 { font-size: 22px; }
.lead {
  color: var(--muted);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.9;
  max-width: 740px;
  margin: 22px 0 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0;
}
.btn.secondary {
  background: rgba(255,255,255,.08);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}
.domain-badge {
  color: var(--muted);
  background: rgba(255,255,255,.045);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px 14px;
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}
.hero-visual {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(63,213,255,.1), rgba(155,104,255,.12));
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.hero-visual figure { margin: 0; }
.hero-visual img {
  width: 100%;
  border-radius: 22px;
  background: rgba(0,0,0,.24);
}
.hero-visual figcaption {
  color: var(--muted);
  line-height: 1.7;
  margin-top: 12px;
}
.metric-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 52px;
}
.metric {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  background: rgba(255,255,255,.045);
}
.metric strong {
  font-size: 26px;
  display: block;
  background: linear-gradient(90deg, var(--blue), var(--pink));
  -webkit-background-clip: text;
  color: transparent;
}
.metric span { color: var(--muted); }
.section {
  padding: 62px 0;
}
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: end;
  margin-bottom: 26px;
}
.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
  max-width: 720px;
}
.grid {
  display: grid;
  gap: 18px;
}
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 18px 60px rgba(0,0,0,.18);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: radial-gradient(circle at 20% 0%, rgba(63,213,255,.18), transparent 12rem);
  opacity: .8;
  pointer-events: none;
}
.card > * { position: relative; }
.card p, .card li { color: var(--muted); line-height: 1.8; }
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}
.tag-list li, .chip {
  color: var(--green);
  border: 1px solid rgba(121,255,207,.26);
  background: rgba(121,255,207,.07);
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 13px;
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.video-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255,255,255,.05);
}
.video-frame {
  position: relative;
  min-height: 214px;
  background: #071225;
}
.video-frame video {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #06101f;
}
.play-button {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  transition: opacity .24s ease;
  background: radial-gradient(circle, rgba(63,213,255,.24), rgba(5,9,21,.18));
}
.play-button span {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(255,255,255,.92);
  color: #071020;
  font-size: 28px;
  padding-left: 4px;
}
.video-card:hover .play-button { opacity: 1; }
.video-body { padding: 18px; }
.video-body p { color: var(--muted); line-height: 1.7; }
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}
.timeline {
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}
.step + .step { margin-top: 16px; }
.step::before {
  counter-increment: step;
  content: counter(step);
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #05101e;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue), var(--pink));
}
.faq details {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px 20px;
  background: rgba(255,255,255,.045);
}
.faq details + details { margin-top: 12px; }
.faq summary {
  cursor: pointer;
  font-weight: 800;
}
.faq p { color: var(--muted); line-height: 1.8; }
.comment {
  min-height: 210px;
}
.quote {
  font-size: 18px;
  color: var(--text) !important;
}
.related {
  background: linear-gradient(135deg, rgba(63,213,255,.06), rgba(155,104,255,.08));
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 26px;
}
.breadcrumb {
  color: var(--muted);
  padding-top: 28px;
  font-size: 14px;
}
.breadcrumb a { color: var(--blue); }
.page-hero {
  padding: 58px 0 30px;
}
.table-like {
  display: grid;
  gap: 12px;
}
.table-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255,255,255,.04);
}
pre.json-output {
  overflow: auto;
  border-radius: 22px;
  background: #030712;
  border: 1px solid var(--line);
  color: #c7f9ff;
  padding: 18px;
  line-height: 1.7;
  max-height: 520px;
}
.site-footer {
  margin-top: 62px;
  border-top: 1px solid var(--line);
  background: rgba(3,7,18,.88);
}
.footer-grid {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr .8fr .9fr;
  gap: 24px;
  padding: 42px 0;
}
.site-footer p, .site-footer a {
  color: var(--muted);
  line-height: 1.8;
}
.site-footer a {
  display: block;
  margin: 8px 0;
}
.copyright {
  border-top: 1px solid var(--line);
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 28px;
  font-size: 14px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
@media (max-width: 920px) {
  .hero, .grid.cols-2, .grid.cols-3, .grid.cols-4, .video-grid, .metric-row, .footer-grid {
    grid-template-columns: 1fr;
  }
  .section-head {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(5,9,21,.96);
  }
  .nav-links.is-open { display: grid; }
  .menu-toggle { display: inline-flex; }
  .search-strip {
    grid-template-columns: 1fr;
  }
  .hero { padding-top: 46px; }
  .table-row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  main, .nav-shell, .search-strip, .footer-grid, .copyright {
    width: min(100% - 22px, 1200px);
  }
  .fake-search { border-radius: 18px; }
  .fake-search button { padding-inline: 14px; }
  .card { padding: 20px; }
  .metric strong { font-size: 22px; }
}