:root {
  --primary: #3FA7FF;
  --primary-dark: #1C6AC7;
  --primary-soft: rgba(63, 167, 255, .14);
  --accent: #8B5CF6;
  --bg: #08101f;
  --surface: #111a2f;
  --surface-strong: #182640;
  --text: #f7fbff;
  --muted: #b9c7dc;
  --border: rgba(185, 199, 220, .18);
  --shadow: rgba(0, 0, 0, .24);
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  background: radial-gradient(circle at 20% 0%, rgba(63,167,255,.16), transparent 28%), linear-gradient(180deg, #08101f 0%, #0b1426 55%, #101827 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
header, nav, main, section, article, footer { display: block; }
.site-header { position: sticky; top: 0; z-index: 30; background: rgba(8,16,31,.86); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
.mobile-header { height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 0 14px; position: relative; }
.desktop-header { display: none; max-width: 1220px; margin: 0 auto; height: 78px; align-items: center; gap: 28px; padding: 0 22px; }
.logo img { width: 168px; height: auto; object-fit: contain; }
.mobile-logo { position: absolute; left: 50%; transform: translateX(-50%); }
.mobile-logo img { width: 118px; }
.menu-button { width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 14px; background: rgba(255,255,255,.05); display: grid; place-content: center; gap: 5px; padding: 0; cursor: pointer; }
.menu-button span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.menu-button.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-button.open span:nth-child(2) { opacity: 0; }
.menu-button.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-panel { position: fixed; top: 64px; left: 0; width: min(84vw, 340px); height: calc(100vh - 64px); background: #0d172b; border-right: 1px solid var(--border); transform: translateX(-105%); transition: transform .24s ease; box-shadow: 20px 20px 60px var(--shadow); padding: 16px; }
.mobile-panel.open { transform: translateX(0); }
.mobile-panel nav { display: grid; gap: 8px; }
.mobile-panel a, .desktop-nav a { color: var(--muted); border-radius: 14px; transition: background .2s ease, color .2s ease; }
.mobile-panel a { padding: 13px 14px; background: rgba(255,255,255,.035); }
.mobile-panel a.active, .mobile-panel a:hover, .desktop-nav a.active, .desktop-nav a:hover { color: var(--text); background: var(--primary-soft); }
.desktop-nav { flex: 1; display: flex; align-items: center; justify-content: center; gap: 5px; }
.desktop-nav a { padding: 10px 12px; white-space: nowrap; font-size: 14px; }
.search-icon { width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 14px; display: grid; place-items: center; color: var(--muted); background: rgba(255,255,255,.04); }
.header-tools { display: flex; align-items: center; gap: 12px; }
.top-action-button, .main-button { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 18px; border-radius: 999px; background: var(--primary); color: #04101f; font-weight: 800; box-shadow: 0 10px 26px rgba(63,167,255,.20); }
.top-action-button:hover, .main-button:hover, .plain-button:hover { filter: brightness(0.85); }
main { width: 100%; }
.movie-hero, .page-hero, .banner-section, .content-section, .cta-section { width: min(1220px, calc(100% - 32px)); margin: 0 auto; }
.movie-hero { min-height: 660px; display: grid; align-items: center; padding: 44px 0 52px; }
.hero-shell { display: grid; gap: 24px; border: 1px solid var(--border); border-radius: 24px; background: linear-gradient(110deg, rgba(8,16,31,.88), rgba(12,24,44,.74)), url('/banner.webp') center/cover no-repeat; overflow: hidden; min-height: 570px; padding: 34px; align-items: end; }
.hero-copy { max-width: 690px; }
.kicker, .data-badge, .category-badge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px; color: var(--text); background: var(--primary-soft); border: 1px solid rgba(63,167,255,.36); font-size: 13px; font-weight: 700; }
h1 { font-size: clamp(34px, 7vw, 72px); line-height: 1.05; margin: 18px 0; letter-spacing: -.04em; }
h2 { font-size: clamp(24px, 4vw, 38px); line-height: 1.18; margin: 0 0 12px; letter-spacing: -.02em; }
h3 { margin: 0 0 8px; font-size: 20px; }
p { color: var(--muted); margin: 0 0 14px; }
.hero-copy p { font-size: 18px; max-width: 620px; }
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 24px 0; }
.hero-stat, .info-card, .service-card, .movie-card, .data-card, .faq-item, .trend-list li { background: rgba(255,255,255,.055); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: 0 16px 40px rgba(0,0,0,.10); }
.hero-stat strong, .data-card strong { display: block; font-size: 25px; color: var(--text); }
.plain-button { display: inline-flex; align-items: center; color: var(--text); font-weight: 800; background: var(--surface-strong); border: 1px solid var(--border); border-radius: 999px; padding: 10px 15px; }
.content-section { padding: 44px 0; }
.section-heading { display: grid; gap: 8px; margin-bottom: 22px; max-width: 780px; }
.responsive-grid, .category-grid, .card-grid, .data-grid { display: grid; gap: 16px; }
.category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.movie-card { overflow: hidden; }
.movie-card img { width: 100%; border-radius: 14px; border: 1px solid var(--border); margin-bottom: 14px; }
.service-card .icon-dot, .info-card .icon-dot { width: 34px; height: 34px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--accent)); margin-bottom: 12px; }
.data-chart-panel { display: grid; gap: 20px; background: linear-gradient(145deg, rgba(17,26,47,.98), rgba(24,38,64,.94)); border: 1px solid var(--border); border-radius: 24px; padding: 20px; }
.data-chart-panel img { border-radius: 18px; border: 1px solid var(--border); }
.chart-bars { display: grid; gap: 12px; }
.chart-bars span { display: block; height: 12px; border-radius: 999px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.device-showcase { display: grid; gap: 20px; align-items: center; background: rgba(255,255,255,.045); border: 1px solid var(--border); border-radius: 24px; padding: 22px; }
.device-showcase img { border-radius: 18px; }
.security-section, .parental-guidance-section { background: linear-gradient(145deg, rgba(63,167,255,.10), rgba(139,92,246,.08)); border: 1px solid var(--border); border-radius: 24px; padding: 22px; }
.alert-box { border-left: 4px solid var(--primary); background: rgba(63,167,255,.10); border-radius: 14px; padding: 16px; color: var(--muted); }
.trend-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; counter-reset: trend; }
.trend-list li { display: grid; gap: 8px; position: relative; padding-left: 58px; }
.trend-list li::before { counter-increment: trend; content: counter(trend); position: absolute; left: 18px; top: 18px; width: 28px; height: 28px; border-radius: 10px; background: var(--primary); color: #04101f; display: grid; place-items: center; font-weight: 900; }
.page-hero { padding: 48px 0 26px; }
.page-hero .hero-mini { border: 1px solid var(--border); border-radius: 24px; padding: 28px; background: radial-gradient(circle at top right, rgba(63,167,255,.18), transparent 34%), rgba(255,255,255,.045); }
.page-hero h1 { font-size: clamp(34px, 6vw, 58px); max-width: 860px; }
.two-column { display: grid; gap: 20px; }
.timeline { display: grid; gap: 14px; border-left: 1px solid var(--border); padding-left: 18px; }
.timeline article { position: relative; }
.timeline article::before { content: ''; position: absolute; left: -25px; top: 8px; width: 13px; height: 13px; border-radius: 50%; background: var(--primary); }
.faq-list { display: grid; gap: 14px; }
.faq-item h2, .faq-item h3 { color: var(--text); margin: 0 0 8px; }
.cta-section { padding: 50px 0 70px; }
.cta-box { display: grid; gap: 20px; align-items: center; border: 1px solid var(--border); border-radius: 24px; padding: 28px; background: linear-gradient(135deg, rgba(63,167,255,.17), rgba(139,92,246,.12)); }
.site-footer { background: #060c18; border-top: 1px solid var(--border); padding: 38px 16px 26px; }
.footer-grid { max-width: 1220px; margin: 0 auto; display: grid; gap: 18px; }
.footer-grid article { background: rgba(255,255,255,.035); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.footer-logo img { width: 154px; margin-bottom: 12px; }
.footer-links { max-width: 1220px; margin: 24px auto 0; display: flex; gap: 10px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); background: rgba(255,255,255,.04); border: 1px solid var(--border); border-radius: 999px; padding: 8px 12px; font-size: 14px; }
.footer-bottom { max-width: 1220px; margin: 22px auto 0; color: var(--muted); font-size: 13px; }
@media (min-width: 680px) {
  .hero-stats, .category-grid, .responsive-grid, .data-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .device-showcase, .data-chart-panel, .two-column, .cta-box { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .mobile-header, .mobile-panel { display: none; }
  .desktop-header { display: flex; }
  .movie-hero { padding-top: 62px; }
  .hero-shell { padding: 54px; }
  .category-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .responsive-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .card-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .data-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}
@media (max-width: 420px) {
  .top-action-button { padding: 0 14px; min-height: 38px; }
  .hero-shell, .page-hero .hero-mini, .content-section, .cta-box { border-radius: 18px; }
  .movie-hero, .page-hero, .banner-section, .content-section, .cta-section { width: min(100% - 24px, 1220px); }
}