:root {
    --primary: #2dd6ff;
    --primary-dark: #0992bf;
    --primary-soft: rgba(45, 214, 255, 0.14);
    --accent: #b9f2d6;
    --bg: #071018;
    --surface: #101b25;
    --surface-strong: #172735;
    --text: #f4f8fb;
    --muted: #a8b8c7;
    --border: rgba(255,255,255,0.13);
    --shadow: rgba(0, 0, 0, 0.24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
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(45,214,255,0.12), transparent 32rem), 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; }

header, .site-header { position: relative; z-index: 20; background: rgba(7,16,24,0.92); border-bottom: 1px solid var(--border); backdrop-filter: blur(18px); }
.mobile-header { height: 64px; display: grid; grid-template-columns: 48px 1fr auto; align-items: center; gap: 10px; padding: 0 14px; }
.desktop-header { display: none; }
.logo img { width: 116px; 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(255,255,255,0.04); display: grid; place-content: center; gap: 5px; cursor: pointer; }
.menu-button span { width: 19px; height: 2px; border-radius: 10px; background: var(--text); display: block; }
.nav a { color: var(--muted); font-weight: 650; font-size: 15px; }
.nav a.active, .nav a:hover { color: var(--primary); }
.mobile-nav { position: fixed; left: 0; top: 0; bottom: 0; width: min(82vw, 330px); background: #091520; transform: translateX(-105%); transition: transform .24s ease; padding: 84px 22px 24px; display: flex; flex-direction: column; gap: 6px; box-shadow: 24px 0 40px var(--shadow); z-index: 30; }
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a { padding: 12px 14px; border-radius: 14px; border: 1px solid transparent; }
.mobile-nav a.active, .mobile-nav a:hover { background: var(--primary-soft); border-color: rgba(45,214,255,0.24); }
.nav-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.48); opacity: 0; pointer-events: none; transition: opacity .2s ease; z-index: 25; }
.nav-backdrop.open { opacity: 1; pointer-events: auto; }
body.menu-open { overflow: hidden; }
.search-icon { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 50%; color: var(--text); }
.search-icon svg { width: 19px; height: 19px; stroke: currentColor; stroke-width: 2; fill: none; }
.top-action-button, .main-button { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; background: var(--primary); color: #041018; font-weight: 800; border: 0; box-shadow: 0 12px 30px rgba(45,214,255,0.18); }
.top-action-button { padding: 9px 16px; font-size: 14px; white-space: nowrap; }
.main-button { padding: 13px 22px; min-width: 132px; }
.top-action-button:hover, .main-button:hover { filter: brightness(0.85); color: #041018; }

main { width: 100%; }
.movie-hero { position: relative; min-height: 620px; display: grid; align-items: center; padding: 90px 18px; background-image: url('banner.webp'); background-size: cover; background-position: center; overflow: hidden; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,16,24,.95), rgba(7,16,24,.72), rgba(7,16,24,.28)); }
.hero-content { position: relative; max-width: 760px; margin: 0 auto; width: min(1120px, 100%); }
.movie-hero h1, .page-hero h1 { font-size: clamp(34px, 8vw, 72px); line-height: 1.05; margin: 16px 0 18px; letter-spacing: -0.05em; }
.movie-hero p, .page-hero p { max-width: 720px; color: #d6e4ef; font-size: 18px; }
.banner-section { border-bottom: 1px solid var(--border); }
.data-badge { display: inline-flex; align-items: center; width: fit-content; gap: 8px; padding: 6px 11px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); border: 1px solid rgba(45,214,255,.22); font-weight: 800; font-size: 13px; }
.content-section, .page-hero, .cta-section { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.content-section { padding: 58px 0; }
.page-hero { padding: 70px 0 36px; }
.compact-hero { padding-bottom: 18px; }
.section-heading { max-width: 760px; margin-bottom: 26px; }
.section-heading h2, .content-section h2, .cta-section h2 { font-size: clamp(26px, 4vw, 44px); line-height: 1.16; margin: 10px 0 12px; letter-spacing: -0.035em; }
.section-heading p, .content-section p, .cta-section p { color: var(--muted); }
.responsive-grid, .category-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.category-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.info-card, .movie-card, .service-card, .faq-item, .feature-article, .timeline-card { background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02)); border: 1px solid var(--border); border-radius: 20px; padding: 22px; box-shadow: 0 14px 36px var(--shadow); }
.info-card strong { display: block; font-size: 42px; line-height: 1; color: var(--primary); }
.info-card span { display: block; margin-top: 8px; font-weight: 800; }
.movie-card h2, .movie-card h3, .service-card h2, .service-card h3, .feature-article h2 { margin-top: 0; line-height: 1.25; }
.movie-card a, .feature-article a, .text-link { color: var(--primary); font-weight: 800; display: inline-flex; margin-right: 14px; }
.movie-card a::after, .feature-article a::after, .text-link::after { content: '›'; padding-left: 6px; }
.service-card { background: var(--surface); }
.data-chart-panel { background: linear-gradient(135deg, rgba(45,214,255,.08), rgba(185,242,214,.04)); border: 1px solid var(--border); border-radius: 24px; padding: 32px; }
.stats-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.split-section, .device-showcase { display: grid; grid-template-columns: 1fr; gap: 26px; align-items: center; }
.image-panel { margin: 0; border: 1px solid var(--border); border-radius: 24px; overflow: hidden; background: var(--surface); box-shadow: 0 18px 42px var(--shadow); }
.image-panel img { width: 100%; min-height: 260px; object-fit: cover; }
.security-section { position: relative; }
.parental-guidance-section { background: linear-gradient(135deg, rgba(185,242,214,.08), rgba(45,214,255,.05)); border-radius: 24px; }
.parental-guidance-section.content-section { padding: 34px; }
.faq-list { display: grid; gap: 14px; }
.faq-item h2 { font-size: 20px; margin: 0 0 8px; }
.alert-box { border: 1px solid rgba(45,214,255,.34); background: rgba(45,214,255,.09); border-radius: 18px; padding: 20px; color: #dceff8; }
.trend-list { display: grid; gap: 12px; padding-left: 0; list-style: none; counter-reset: item; }
.trend-list li { counter-increment: item; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 16px 18px; color: var(--muted); }
.trend-list li::before { content: counter(item, decimal-leading-zero); color: var(--primary); font-weight: 900; margin-right: 12px; }
.cta-section { margin-top: 18px; margin-bottom: 70px; text-align: center; padding: 54px 24px; border-radius: 28px; background: linear-gradient(135deg, rgba(45,214,255,.14), rgba(185,242,214,.07)); border: 1px solid var(--border); }
.cta-section p { max-width: 680px; margin: 0 auto 22px; }
.support-strip { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.timeline-section { display: grid; gap: 16px; }
.timeline-card span { color: var(--primary); font-weight: 900; }
.check-list { padding-left: 18px; color: var(--muted); }
.mini-panel { width: 100%; }
.bar-list { display: grid; gap: 14px; }
.bar-list span { display: block; position: relative; padding: 10px 12px; border-radius: 12px; background: rgba(255,255,255,.05); overflow: hidden; }
.bar-list span::before { content: ''; position: absolute; inset: 0 auto 0 0; width: var(--w); background: var(--primary-soft); z-index: 0; }
.bar-list span { z-index: 1; }
.line-chart { min-height: 170px; display: flex; align-items: end; gap: 14px; padding: 16px; border: 1px solid var(--border); border-radius: 18px; }
.line-chart span { flex: 1; border-radius: 14px 14px 0 0; background: linear-gradient(180deg, var(--primary), rgba(45,214,255,.15)); min-height: 45px; }
.line-chart span:nth-child(2) { min-height: 86px; }
.line-chart span:nth-child(3) { min-height: 132px; }
.line-chart span:nth-child(4) { min-height: 105px; }
.line-chart span:nth-child(5) { min-height: 148px; }
.article-flow, .guide-grid { display: grid; gap: 18px; }
.spotlight-card { background: linear-gradient(160deg, rgba(45,214,255,.16), rgba(255,255,255,.035)); }

footer, .site-footer { background: #050b11; border-top: 1px solid var(--border); margin-top: 40px; }
.footer-grid { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 52px 0 28px; display: grid; grid-template-columns: 1fr; gap: 26px; }
.footer h2 { font-size: 18px; margin: 0 0 12px; }
.footer p, .footer li { color: var(--muted); font-size: 14px; }
.footer ul { padding: 0; margin: 0; list-style: none; display: grid; gap: 8px; }
.footer-note { color: #d8edf8 !important; }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 16px; text-align: center; }
.footer-logo img { width: 128px; margin-bottom: 12px; }

@media (min-width: 720px) {
    .responsive-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .split-section, .device-showcase { grid-template-columns: minmax(0, 1fr) minmax(300px, .9fr); }
    .timeline-section { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.4fr .8fr 1fr 1fr; }
}

@media (min-width: 1024px) {
    .mobile-header { display: none; }
    .desktop-header { width: min(1180px, calc(100% - 40px)); margin: 0 auto; min-height: 76px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 26px; }
    .desktop-nav { display: flex; align-items: center; justify-content: center; gap: 6px; }
    .desktop-nav a { padding: 10px 12px; border-radius: 999px; }
    .desktop-nav a.active, .desktop-nav a:hover { background: var(--primary-soft); }
    .desktop-tools { display: flex; align-items: center; gap: 12px; }
    .logo img { width: 132px; }
    .movie-hero { padding: 112px 40px; }
    .hero-content { margin-left: max(40px, calc((100vw - 1120px) / 2)); }
    .responsive-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .stats-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .article-flow { grid-template-columns: 1.1fr .9fr .9fr; }
    .guide-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 380px) {
    .top-action-button { padding: 8px 12px; }
    .logo img { width: 104px; }
    .movie-hero { min-height: 560px; }
}