:root {
    --primary: #00c2a8;
    --primary-deep: #008f80;
    --primary-soft: rgba(0, 194, 168, 0.15);
    --bg: #091016;
    --bg-elevated: #0f1924;
    --surface: #132231;
    --surface-soft: #172a3a;
    --text: #f6fbff;
    --muted: #aab8c6;
    --line: rgba(255, 255, 255, 0.12);
    --dark-line: rgba(0, 0, 0, 0.18);
    --shadow: 0 22px 60px rgba(0, 0, 0, 0.28);
    --radius: 18px;
    --radius-sm: 12px;
    --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background: radial-gradient(circle at 15% 0%, rgba(0, 194, 168, 0.18), transparent 32%), linear-gradient(180deg, #091016 0%, #0b121b 46%, #101923 100%);
    color: var(--text);
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header, header {
    position: sticky;
    top: 0;
    z-index: 20;
    width: 100%;
    background: rgba(9, 16, 22, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.mobile-header, .mobile-topbar {
    height: 58px;
    padding: 0 14px;
    display: grid;
    grid-template-columns: 44px 1fr auto;
    align-items: center;
    gap: 10px;
}
.logo img { width: 132px; height: auto; object-fit: contain; }
.mobile-logo { justify-self: center; }
.mobile-logo img { width: 118px; max-height: 38px; }
.menu-button {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.05);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}
.menu-button span {
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--text);
}
.top-action, .main-button, .secondary-link, .mini-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    min-height: 42px;
    padding: 0 18px;
    font-weight: 800;
    letter-spacing: 0.02em;
    transition: transform .2s ease, filter .2s ease, border-color .2s ease;
}
.top-action, .main-button {
    color: #02120f;
    background: var(--primary);
    box-shadow: 0 14px 36px rgba(0, 194, 168, 0.22);
}
.top-action:hover, .main-button:hover { filter: brightness(0.85); transform: translateY(-1px); }
.mobile-drawer {
    max-height: 0;
    overflow: hidden;
    border-top: 1px solid transparent;
    transition: max-height .25s ease;
}
.mobile-drawer.open {
    max-height: 520px;
    border-top-color: var(--line);
}
.mobile-nav {
    padding: 12px 16px 18px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.mobile-nav a {
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255,255,255,.05);
    color: var(--muted);
    font-weight: 700;
}
.mobile-nav a.active { color: var(--primary); border-color: rgba(0,194,168,.48); background: var(--primary-soft); }
.desktop-header { display: none; }
.site-main { min-height: 70vh; }
.section, .movie-hero, .banner-section, .page-hero, .bottom-cta {
    width: min(100% - 28px, var(--max));
    margin: 0 auto;
}
.movie-hero, .banner-section {
    padding: 40px 0 24px;
}
.hero-frame {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(0, 194, 168, .2), rgba(19, 34, 49, .88));
    box-shadow: var(--shadow);
}
.hero-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(9, 16, 22, .12), rgba(9, 16, 22, .92));
    pointer-events: none;
}
.hero-frame img { width: 100%; min-height: 280px; object-fit: cover; opacity: .72; }
.hero-content {
    position: absolute;
    inset: auto 18px 20px 18px;
    z-index: 2;
}
.eyebrow, .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    padding: 6px 12px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(0,194,168,.38);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
}
h1, h2, h3 { line-height: 1.18; margin: 0 0 14px; }
h1 { font-size: clamp(2rem, 8vw, 5rem); letter-spacing: -0.05em; }
h2 { font-size: clamp(1.55rem, 4vw, 2.4rem); letter-spacing: -0.03em; }
h3 { font-size: 1.08rem; }
p { margin: 0 0 14px; color: var(--muted); }
.lead { font-size: 1.06rem; color: #dce8f1; max-width: 780px; }
.section { padding: 36px 0; }
.section-head { display: grid; gap: 8px; margin-bottom: 18px; }
.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.movie-card, .service-card, .data-chart-panel, .info-card, .faq-item, .step-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(19, 34, 49, 0.78);
    box-shadow: 0 16px 42px rgba(0,0,0,.16);
}
.movie-card, .service-card, .info-card, .step-card { padding: 20px; }
.movie-card:hover, .service-card:hover, .info-card:hover {
    border-color: rgba(0,194,168,.45);
    transform: translateY(-2px);
}
.movie-card, .service-card, .info-card { transition: border-color .2s ease, transform .2s ease; }
.card-badge {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(0,194,168,.32);
    font-weight: 900;
    margin-bottom: 14px;
}
.secondary-link, .mini-button {
    min-height: 36px;
    padding: 0 14px;
    color: var(--primary);
    border: 1px solid rgba(0,194,168,.35);
    background: rgba(0,194,168,.08);
    font-size: 14px;
}
.secondary-link:hover, .mini-button:hover { filter: brightness(1.2); border-color: var(--primary); }
.feature-split, .device-showcase, .security-section, .parental-guidance-section, .two-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    align-items: center;
}
.image-panel {
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow);
}
.image-panel img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.service-grid, .info-grid, .steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.service-card strong { color: var(--text); display: block; margin-bottom: 6px; }
.data-chart-panel {
    padding: 18px;
    background: linear-gradient(180deg, rgba(19,34,49,.95), rgba(15,25,36,.88));
}
.data-row {
    display: grid;
    grid-template-columns: 1.3fr .8fr .8fr;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
}
.data-row:last-child { border-bottom: 0; }
.trend-up { color: var(--primary); font-weight: 900; }
.rating-stars { color: var(--primary); letter-spacing: 2px; }
.notice-box, .legal-box {
    padding: 18px;
    border-radius: var(--radius);
    border: 1px solid rgba(0,194,168,.32);
    background: linear-gradient(135deg, rgba(0,194,168,.14), rgba(19,34,49,.74));
}
.notice-box ul, .legal-box ul, .check-list { margin: 10px 0 0; padding-left: 20px; color: var(--muted); }
.faq-list { display: grid; gap: 12px; }
.faq-item { padding: 18px; }
.faq-item h3 { color: var(--text); }
.bottom-cta {
    margin-top: 24px;
    margin-bottom: 42px;
    padding: 28px 20px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(0,194,168,.9), rgba(0,143,128,.75)), var(--primary);
    color: #02120f;
    text-align: center;
    box-shadow: var(--shadow);
}
.bottom-cta p { color: rgba(2,18,15,.78); }
.bottom-cta .main-button { background: #071219; color: var(--text); box-shadow: none; }
.site-footer, footer {
    border-top: 1px solid var(--line);
    background: rgba(6, 12, 18, .96);
    padding: 34px 16px 18px;
}
.footer-grid {
    width: min(100%, var(--max));
    margin: 0 auto;
    display: grid;
    gap: 20px;
}
.footer-grid h2 { font-size: 1rem; }
.footer-grid a { display: block; color: var(--muted); margin: 7px 0; }
.footer-grid a:hover { color: var(--primary); }
.footer-logo img { width: 130px; margin-bottom: 12px; }
.footer-bottom {
    width: min(100%, var(--max));
    margin: 22px auto 0;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--muted);
    font-size: 13px;
}
.page-hero {
    padding: 42px 0 16px;
}
.page-hero .lead { max-width: 860px; }
.content-block {
    width: min(100% - 28px, 920px);
    margin: 0 auto;
    padding: 24px 0 46px;
}
.content-block p { font-size: 1.02rem; }
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(19, 34, 49, .76);
}
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--muted); }
th { color: var(--text); background: rgba(0, 194, 168, .09); }
tr:last-child td { border-bottom: 0; }
@media (min-width: 620px) {
    .category-grid, .service-grid, .info-grid, .steps-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-content { inset: auto 34px 34px 34px; }
}
@media (min-width: 880px) {
    .mobile-header, .mobile-drawer { display: none; }
    .desktop-header {
        width: min(100% - 36px, var(--max));
        margin: 0 auto;
        height: 76px;
        display: grid;
        grid-template-columns: auto 1fr auto auto;
        align-items: center;
        gap: 18px;
    }
    .desktop-logo img { width: 150px; max-height: 46px; }
    .desktop-nav {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: clamp(12px, 1.8vw, 24px);
        white-space: nowrap;
    }
    .desktop-nav a {
        position: relative;
        color: var(--muted);
        font-size: 15px;
        font-weight: 800;
        padding: 26px 0;
    }
    .desktop-nav a::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 18px;
        height: 2px;
        border-radius: 999px;
        background: var(--primary);
        transform: scaleX(0);
        transition: transform .2s ease;
    }
    .desktop-nav a:hover, .desktop-nav a.active { color: var(--text); }
    .desktop-nav a:hover::after, .desktop-nav a.active::after { transform: scaleX(1); }
    .search-icon {
        position: relative;
        width: 36px;
        height: 36px;
        border: 1px solid var(--line);
        border-radius: 50%;
    }
    .search-icon::before {
        content: "";
        position: absolute;
        width: 12px;
        height: 12px;
        border: 2px solid var(--muted);
        border-radius: 50%;
        top: 9px;
        left: 9px;
    }
    .search-icon::after {
        content: "";
        position: absolute;
        width: 9px;
        height: 2px;
        background: var(--muted);
        transform: rotate(45deg);
        top: 22px;
        left: 22px;
        border-radius: 999px;
    }
    .movie-hero, .banner-section { padding-top: 56px; }
    .hero-frame img { min-height: 540px; }
    .hero-content { max-width: 720px; inset: auto auto 54px 54px; }
    .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .feature-split, .device-showcase, .security-section, .parental-guidance-section, .two-col { grid-template-columns: 1.02fr .98fr; gap: 32px; }
    .feature-split.reverse { grid-template-columns: .98fr 1.02fr; }
    .feature-split.reverse .image-panel { order: 2; }
    .info-grid, .steps-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.4fr .8fr .8fr 1fr; }
    .footer-bottom { flex-direction: row; justify-content: space-between; }
}
@media (min-width: 1120px) {
    .desktop-nav { gap: 26px; }
    .category-grid.six { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .category-grid.six .movie-card { padding: 18px; }
}