:root {
  --primary: #18c6d9;
  --primary-dark: #0b7f90;
  --primary-soft: rgba(24, 198, 217, 0.14);
  --accent: #f2b35d;
  --bg: #071016;
  --surface: #0e1b24;
  --surface-strong: #142633;
  --text: #f4fbff;
  --muted: #a9bfca;
  --border: rgba(255,255,255,0.1);
  --shadow: rgba(0,0,0,0.28);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: radial-gradient(circle at 20% 0%, rgba(24,198,217,0.16), transparent 32%), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
header, .site-header { position: sticky; top: 0; z-index: 50; background: rgba(7,16,22,0.92); backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); }
.mobile-header { height: 64px; display: grid; grid-template-columns: 48px 1fr auto; align-items: center; gap: 10px; padding: 0 16px; }
.desktop-header { display: none; }
.logo img, .mobile-logo img { height: 34px; width: auto; object-fit: contain; }
.mobile-logo { justify-self: center; }
.menu-button { width: 42px; height: 42px; border: 1px solid var(--border); background: rgba(255,255,255,0.04); border-radius: 14px; display: grid; place-content: center; gap: 5px; cursor: pointer; }
.menu-button span { display: block; width: 19px; height: 2px; background: var(--text); border-radius: 999px; }
nav a, .desktop-nav a, .mobile-nav a { color: var(--muted); font-weight: 700; letter-spacing: .01em; }
.mobile-nav { display: none; padding: 8px 16px 18px; background: var(--surface); border-bottom: 1px solid var(--border); }
.mobile-nav.open { display: grid; gap: 8px; }
.mobile-nav a { padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,0.03); }
.mobile-nav a.active, .mobile-nav a:hover { color: var(--text); background: var(--primary-soft); border: 1px solid rgba(24,198,217,.3); }
.search-icon { width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 50%; color: var(--muted); }
.search-icon svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.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: #041014; font-weight: 900; box-shadow: 0 14px 32px rgba(24,198,217,.18); }
.top-action-button:hover, .main-button:hover { filter: brightness(0.85); }
main { min-height: 60vh; }
.container, .content-section, .banner-section, .movie-hero, .page-hero, .cta-section { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.movie-hero { position: relative; display: grid; gap: 24px; padding: 42px 0 28px; }
.movie-hero .hero-copy { position: relative; z-index: 2; }
.hero-visual { border-radius: 24px; overflow: hidden; min-height: 260px; border: 1px solid var(--border); box-shadow: 0 28px 60px var(--shadow); background: var(--surface-strong); }
.hero-visual img { width: 100%; height: 100%; min-height: 260px; object-fit: cover; }
.kicker, .data-badge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-weight: 900; font-size: .86rem; }
h1 { font-size: clamp(2.15rem, 9vw, 5.2rem); line-height: 1.04; margin: 18px 0; letter-spacing: -.06em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.45rem); line-height: 1.18; margin: 0 0 14px; letter-spacing: -.03em; }
h3 { margin: 0 0 8px; font-size: 1.08rem; }
p { color: var(--muted); margin: 0 0 14px; }
.lead { font-size: 1.08rem; color: #d7e8ee; max-width: 760px; }
.content-section { padding: 38px 0; }
.section-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.responsive-grid, .category-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
.movie-card, .service-card, .info-card, .faq-item, .alert-box, .data-chart-panel, .security-section, .parental-guidance-section { background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.025)); border: 1px solid var(--border); border-radius: 20px; padding: 20px; box-shadow: 0 18px 42px rgba(0,0,0,.16); }
.movie-card:hover, .service-card:hover, .info-card:hover { border-color: rgba(24,198,217,.42); transform: translateY(-2px); transition: .2s ease; }
.movie-card img, .device-showcase img, .data-chart-panel img { border-radius: 18px; border: 1px solid var(--border); margin-bottom: 14px; }
.card-link { color: var(--primary); font-weight: 900; }
.data-chart-panel { display: grid; gap: 18px; background: linear-gradient(135deg, rgba(24,198,217,.12), rgba(242,179,93,.08)); }
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.metric { padding: 16px; border: 1px solid var(--border); border-radius: 18px; background: rgba(7,16,22,.48); }
.metric strong { display: block; font-size: 1.55rem; color: var(--text); }
.trend-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.trend-list li { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 14px 16px; border-radius: 16px; background: rgba(255,255,255,.04); border: 1px solid var(--border); }
.trend-list b { color: var(--primary); }
.device-showcase { display: grid; gap: 22px; align-items: center; }
.security-section { border-left: 4px solid var(--accent); }
.parental-guidance-section { border-left: 4px solid var(--primary); }
.alert-box { background: var(--primary-soft); border-color: rgba(24,198,217,.28); }
.alert-box strong { color: var(--text); }
.page-hero { padding: 48px 0 26px; }
.page-hero h1 { max-width: 900px; }
.page-hero .summary { max-width: 850px; color: #d7e8ee; }
.timeline { display: grid; gap: 14px; counter-reset: step; }
.timeline article { position: relative; padding: 18px 18px 18px 52px; border: 1px solid var(--border); border-radius: 18px; background: rgba(255,255,255,.035); }
.timeline article:before { counter-increment: step; content: counter(step); position: absolute; left: 16px; top: 18px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: #041014; font-weight: 900; }
.faq-item summary { cursor: pointer; font-weight: 900; color: var(--text); }
.faq-item p { margin-top: 12px; }
.cta-section { padding: 44px 24px; margin-top: 28px; margin-bottom: 46px; border-radius: 24px; background: linear-gradient(135deg, rgba(24,198,217,.2), rgba(242,179,93,.12)); border: 1px solid var(--border); text-align: center; }
.site-footer { background: #050b10; border-top: 1px solid var(--border); padding: 42px 16px 24px; }
.footer-grid { width: min(1160px, 100%); margin: 0 auto; display: grid; gap: 22px; }
.footer-grid h2 { font-size: 1.1rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-links a { padding: 9px 12px; border-radius: 999px; background: rgba(255,255,255,.05); color: var(--muted); }
.footer-links a:hover { color: var(--text); background: var(--primary-soft); }
.copyright { width: min(1160px, 100%); margin: 26px auto 0; border-top: 1px solid var(--border); padding-top: 18px; }
.banner-section { padding: 26px 0; }
.split { display: grid; gap: 18px; align-items: start; }
.stat-row { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.small-note { font-size: .92rem; color: var(--muted); }
@media (min-width: 700px) {
  .responsive-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(4, 1fr); }
  .device-showcase, .split, .data-chart-panel { grid-template-columns: 1.05fr .95fr; }
  .stat-row { grid-template-columns: repeat(4,1fr); }
}
@media (min-width: 980px) {
  .mobile-header, .mobile-nav { display: none !important; }
  .desktop-header { width: min(1240px, calc(100% - 40px)); height: 78px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 20px; }
  .desktop-nav { display: flex; justify-content: center; gap: 6px; align-items: center; }
  .desktop-nav a { padding: 12px 10px; border-radius: 999px; font-size: .95rem; white-space: nowrap; }
  .desktop-nav a.active, .desktop-nav a:hover { color: var(--text); background: var(--primary-soft); }
  .movie-hero { grid-template-columns: .92fr 1.08fr; align-items: center; min-height: 620px; padding: 54px 0 42px; }
  .hero-visual { min-height: 490px; order: 2; }
  .hero-visual img { min-height: 490px; }
  .hero-copy { order: 1; }
  .responsive-grid.three, .category-grid.three { grid-template-columns: repeat(3, 1fr); }
  .responsive-grid.four { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-links { grid-column: 1 / -1; }
}