:root {
  --primary: #30a8ff;
  --primary-dark: #0875c4;
  --primary-soft: rgba(48, 168, 255, 0.14);
  --accent: #78e4d4;
  --bg: #07111f;
  --surface: #101c2e;
  --surface-strong: #17263d;
  --text: #f6fbff;
  --muted: #a8b8ca;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: rgba(0, 0, 0, 0.26);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: radial-gradient(circle at top left, rgba(48,168,255,.16), transparent 30rem), var(--bg);
  color: var(--text);
  line-height: 1.72;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
body, button, input { font: inherit; }
header, nav, main, section, article, footer { display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 17, 31, 0.88);
  backdrop-filter: blur(18px);
}
.mobile-header {
  height: 62px;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
}
.desktop-header { display: none; }
.logo img, .drawer-logo { width: 132px; height: auto; object-fit: contain; }
.mobile-logo { justify-self: center; }
.menu-button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255,255,255,.05);
  color: var(--text);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}
.menu-button span { width: 20px; height: 2px; border-radius: 2px; background: currentColor; }
.top-action, .main-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--primary);
  color: #03111f;
  font-weight: 800;
  border: 0;
  box-shadow: 0 10px 28px rgba(48,168,255,.22);
}
.top-action:hover, .main-button:hover { filter: brightness(0.85); color: #03111f; }
.mobile-drawer {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.42);
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease;
}
.mobile-drawer.is-open { opacity: 1; pointer-events: auto; }
.drawer-panel {
  width: min(84vw, 340px);
  min-height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 18px;
  transform: translateX(-100%);
  transition: transform .24s ease;
  box-shadow: 20px 0 50px var(--shadow);
}
.mobile-drawer.is-open .drawer-panel { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.drawer-close { border: 1px solid var(--border); color: var(--text); background: transparent; border-radius: 12px; width: 38px; height: 38px; font-size: 24px; cursor: pointer; }
.nav { display: flex; }
.mobile-nav { flex-direction: column; gap: 8px; }
.nav-link {
  border-radius: 14px;
  color: var(--muted);
  font-weight: 700;
  transition: background .2s ease, color .2s ease;
}
.mobile-nav .nav-link { padding: 12px 14px; border: 1px solid var(--border); background: rgba(255,255,255,.03); }
.nav-link:hover, .nav-link.is-active { color: var(--text); background: var(--primary-soft); }
.nav-link.is-active { box-shadow: inset 0 0 0 1px rgba(48,168,255,.35); }
.drawer-note { color: var(--muted); font-size: 14px; padding: 12px 2px 0; }
.search-icon { color: var(--muted); display: inline-flex; align-items: center; }
main { width: 100%; }
.content-section, .page-hero, .cta-section, .movie-hero {
  width: min(1180px, calc(100% - 32px));
  margin-inline: auto;
}
.movie-hero {
  min-height: 640px;
  display: grid;
  align-items: end;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 28px 28px;
  isolation: isolate;
  margin-bottom: 38px;
}
.banner-section { box-shadow: 0 22px 70px var(--shadow); }
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .62; }
.hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,17,31,.15), rgba(7,17,31,.86) 70%, var(--bg)); z-index: 1; }
.hero-content { max-width: 760px; padding: 120px 22px 48px; }
h1, h2, h3 { line-height: 1.18; margin: 0 0 14px; letter-spacing: -0.02em; }
h1 { font-size: clamp(36px, 8vw, 72px); }
h2 { font-size: clamp(26px, 5vw, 42px); }
h3 { font-size: 21px; }
p { margin: 0 0 16px; color: var(--muted); }
.data-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--accent);
  border: 1px solid rgba(48,168,255,.22);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 16px;
}
.content-section { padding: 42px 0; }
.page-hero { padding: 70px 0 34px; }
.page-hero p { max-width: 820px; font-size: 18px; }
.compact-hero { padding-bottom: 10px; }
.section-head { display: grid; gap: 8px; margin-bottom: 24px; max-width: 820px; }
.section-head.compact { margin-bottom: 12px; }
.responsive-grid { display: grid; gap: 18px; grid-template-columns: 1fr; }
.category-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.info-card, .service-card, .movie-card, .faq-item, .timeline-item, .feature-article {
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.025));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 16px 38px rgba(0,0,0,.12);
}
.info-card strong { display: block; color: var(--primary); font-size: 38px; line-height: 1; margin-bottom: 8px; }
.info-card span { color: var(--text); font-weight: 800; }
.info-card.emphasis { background: linear-gradient(145deg, var(--primary-soft), rgba(255,255,255,.035)); }
.service-card b { color: var(--primary); font-size: 18px; }
.service-card a, .info-card a, .movie-card a, .text-link { color: var(--accent); font-weight: 800; }
.movie-card { overflow: hidden; }
.movie-card img { width: calc(100% + 44px); max-width: none; margin: -22px -22px 18px; height: 260px; object-fit: cover; }
.poster-card img { height: 340px; }
.split-feature { display: grid; gap: 24px; align-items: center; }
.reverse { direction: ltr; }
.data-chart-panel, .data-board, .security-section, .parental-guidance-section {
  background: linear-gradient(145deg, rgba(48,168,255,.08), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
}
.trend-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.trend-list li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 16px;
  border-radius: 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
}
.trend-list span { color: var(--primary); font-weight: 900; }
.trend-list a { font-weight: 800; }
.trend-list small { display: block; color: var(--muted); font-weight: 500; margin-top: 3px; }
.trend-list em { color: var(--accent); font-style: normal; font-weight: 900; }
.device-showcase { display: grid; gap: 24px; align-items: center; }
.device-showcase img { border-radius: 22px; border: 1px solid var(--border); background: var(--surface); }
.quote-wall .info-card p { color: var(--text); font-size: 18px; }
.quote-wall small { color: var(--muted); }
.alert-box {
  border-radius: 18px;
  border: 1px solid rgba(120,228,212,.28);
  background: rgba(120,228,212,.08);
  padding: 20px;
  color: var(--text);
}
.faq-list { display: grid; gap: 16px; }
.faq-item h2 { font-size: 22px; }
.check-list, .step-list { margin: 0; padding-left: 20px; color: var(--muted); }
.check-list li, .step-list li { margin: 8px 0; }
.timeline { display: grid; gap: 16px; }
.timeline-item span { color: var(--accent); font-weight: 900; }
.magazine-layout, .article-flow { display: grid; gap: 18px; }
.lab-panel .info-card strong { font-size: 28px; }
.cta-section {
  margin-top: 34px;
  margin-bottom: 56px;
  padding: 42px 24px;
  border-radius: 28px;
  text-align: center;
  background: radial-gradient(circle at 50% 0, rgba(48,168,255,.28), rgba(255,255,255,.04) 58%), var(--surface-strong);
  border: 1px solid var(--border);
}
.cta-section p { max-width: 680px; margin-inline: auto; }
.site-footer {
  border-top: 1px solid var(--border);
  background: #050c16;
  padding: 42px 16px 34px;
}
.footer-grid { width: min(1180px, 100%); margin: 0 auto; display: grid; gap: 22px; grid-template-columns: 1fr; }
.site-footer h2 { font-size: 20px; }
.site-footer p, .copyright { font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-links a, .footer-help { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--muted); }
.footer-links a:hover, .footer-help:hover { color: var(--primary); }
@media (min-width: 640px) {
  .responsive-grid.two, .responsive-grid.three, .responsive-grid.four, .category-grid { grid-template-columns: repeat(2, 1fr); }
  .movie-hero { border-radius: 28px; margin-top: 18px; }
  .hero-content { padding-inline: 36px; }
}
@media (min-width: 900px) {
  .mobile-header, .mobile-drawer { display: none; }
  .desktop-header {
    width: min(1240px, calc(100% - 36px));
    margin-inline: auto;
    height: 76px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 26px;
  }
  .desktop-nav { justify-content: center; gap: 6px; }
  .desktop-nav .nav-link { padding: 10px 12px; font-size: 14px; }
  .header-tools { display: flex; align-items: center; gap: 16px; }
  .split-feature, .device-showcase, .magazine-layout { grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr); }
  .split-feature.reverse { grid-template-columns: minmax(280px, .9fr) minmax(0, 1.1fr); }
  .responsive-grid.three { grid-template-columns: repeat(3, 1fr); }
  .responsive-grid.four { grid-template-columns: repeat(4, 1fr); }
  .category-grid { grid-template-columns: repeat(4, 1fr); }
  .article-flow { grid-template-columns: 1.2fr .8fr; }
  .footer-grid { grid-template-columns: 1.3fr 1.1fr 1fr 1fr; }
}
@media (min-width: 1120px) {
  .desktop-nav .nav-link { padding: 11px 14px; font-size: 15px; }
  .movie-hero { min-height: 690px; }
}
@media (max-width: 380px) {
  .top-action { padding: 0 13px; min-height: 38px; }
  .logo img { width: 112px; }
  .content-section, .page-hero, .cta-section, .movie-hero { width: min(100% - 24px, 1180px); }
}