/* roulang page: index */
:root {
            --ink: #17212b;
            --muted: #6e7b86;
            --soft: #f4f7f8;
            --paper: #ffffff;
            --line: #dfe7e9;
            --teal: #087f82;
            --teal-dark: #075b60;
            --coral: #e76f51;
            --gold: #d99b35;
            --night: #12242c;
            --radius: 16px;
            --shadow: 0 16px 42px rgba(25, 48, 57, .09);
            --container: 1180px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            background: var(--paper);
            color: var(--ink);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            letter-spacing: 0;
        }
        a { color: inherit; text-decoration: none; }
        img { display: block; width: 100%; object-fit: cover; }
        button, input { font: inherit; }
        button { cursor: pointer; border: 0; }
        .container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
        .eyebrow {
            color: var(--teal);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .16em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-head {
            display: flex;
            justify-content: space-between;
            align-items: end;
            gap: 24px;
            margin-bottom: 30px;
        }
        .section-head h2 {
            font-size: clamp(26px, 3vw, 40px);
            line-height: 1.2;
            letter-spacing: 0;
        }
        .section-head p { max-width: 570px; color: var(--muted); font-size: 15px; }
        .text-link { color: var(--teal); font-weight: 700; white-space: nowrap; }
        .text-link:hover { color: var(--coral); }
        header {
            position: sticky;
            top: 0;
            z-index: 20;
            background: rgba(255,255,255,.94);
            border-bottom: 1px solid rgba(223,231,233,.85);
            backdrop-filter: blur(16px);
        }
        .nav-wrap { min-height: 78px; display: flex; align-items: center; gap: 34px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; }
        .brand-mark {
            display: grid;
            place-items: center;
            width: 38px;
            height: 38px;
            border-radius: 11px;
            color: #fff;
            background: var(--teal);
            box-shadow: 0 8px 20px rgba(8,127,130,.22);
            font-weight: 900;
            font-size: 15px;
        }
        .brand-name { font-size: 17px; font-weight: 900; }
        nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
        nav a { color: var(--muted); font-size: 14px; font-weight: 700; position: relative; padding: 27px 0; }
        nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 19px; height: 2px; background: var(--teal); transform: scaleX(0); transition: transform .2s ease; }
        nav a:hover, nav a.active { color: var(--teal); }
        nav a:hover::after, nav a.active::after { transform: scaleX(1); }
        .nav-action { padding: 11px 17px !important; color: #fff !important; background: var(--coral); border-radius: 9px; }
        .nav-action::after { display: none; }
        .menu-toggle { display: none; background: transparent; color: var(--ink); font-size: 24px; }
        .hero {
            background: #edf5f4;
            border-bottom: 1px solid var(--line);
            padding: 68px 0 72px;
            overflow: hidden;
        }
        .hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 70px; align-items: center; }
        .hero h1 { max-width: 650px; font-size: clamp(40px, 5vw, 70px); line-height: 1.12; letter-spacing: -.02em; margin-bottom: 20px; }
        .hero h1 em { color: var(--coral); font-style: normal; }
        .hero-lead { max-width: 680px; font-size: 17px; color: #52636b; margin-bottom: 28px; }
        .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
        .btn { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 46px; padding: 0 21px; border-radius: 9px; font-size: 14px; font-weight: 800; transition: .2s ease; }
        .btn-primary { color: #fff; background: var(--teal); box-shadow: 0 10px 22px rgba(8,127,130,.18); }
        .btn-primary:hover { background: var(--teal-dark); transform: translateY(-2px); }
        .btn-secondary { color: var(--teal-dark); background: #fff; border: 1px solid #c9dedd; }
        .btn-secondary:hover { border-color: var(--teal); background: #f8ffff; }
        .signal-board { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .signal {
            min-height: 128px;
            padding: 18px;
            background: #fff;
            border: 1px solid #dce8e6;
            border-radius: 14px;
            box-shadow: 0 12px 28px rgba(32,73,76,.07);
        }
        .signal:nth-child(2) { margin-top: 26px; }
        .signal:nth-child(3) { margin-top: -18px; }
        .signal-icon { color: var(--coral); font-size: 22px; margin-bottom: 16px; }
        .signal strong { display: block; font-size: 18px; margin-bottom: 3px; }
        .signal span { color: var(--muted); font-size: 12px; }
        section { padding: 88px 0; }
        .kpi-band { padding: 30px 0; background: var(--night); color: #fff; }
        .kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .kpi { padding-right: 20px; border-right: 1px solid rgba(255,255,255,.16); }
        .kpi:last-child { border-right: 0; }
        .kpi strong { display: block; color: #fff; font-size: 30px; line-height: 1; margin-bottom: 7px; }
        .kpi span { color: #b4c5c8; font-size: 13px; }
        .latest { background: #fff; }
        .movie-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .movie-card { min-width: 0; }
        .poster { position: relative; aspect-ratio: 3 / 4; overflow: hidden; border-radius: 13px; background: #dfe8e8; }
        .poster img { height: 100%; transition: transform .35s ease; }
        .movie-card:hover .poster img { transform: scale(1.05); }
        .poster::after { content: ""; position: absolute; inset: 48% 0 0; background: linear-gradient(transparent, rgba(4,20,25,.7)); }
        .badge { position: absolute; z-index: 1; top: 12px; left: 12px; padding: 3px 8px; border-radius: 5px; color: #fff; background: var(--teal); font-size: 11px; font-weight: 800; }
        .badge.coral { background: var(--coral); }
        .poster-score { position: absolute; z-index: 1; right: 12px; bottom: 10px; color: #fff; font-size: 13px; font-weight: 800; }
        .movie-info { padding: 13px 2px 0; }
        .movie-info h3 { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 16px; }
        .movie-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 12px; margin-top: 4px; }
        .popular { background: var(--soft); }
        .popular-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
        .feature-card { display: grid; grid-template-columns: 42% 1fr; min-height: 180px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: .25s ease; }
        .feature-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
        .feature-card img { height: 100%; }
        .feature-copy { padding: 20px; }
        .feature-copy h3 { font-size: 19px; margin: 6px 0 7px; }
        .feature-copy p { color: var(--muted); font-size: 13px; line-height: 1.65; }
        .feature-label { color: var(--coral); font-size: 11px; font-weight: 800; }
        .matrix { background: #fff; }
        .matrix-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
        .matrix-item { min-height: 176px; padding: 22px 18px; background: #f7f9f8; border-top: 3px solid var(--teal); }
        .matrix-item:nth-child(2n) { border-color: var(--coral); }
        .matrix-item h3 { font-size: 18px; margin-bottom: 10px; }
        .matrix-item p { color: var(--muted); font-size: 13px; line-height: 1.7; }
        .comparison { background: #f2f6f5; }
        .compare-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: center; }
        .compare-layout h2 { font-size: clamp(28px, 3.5vw, 44px); line-height: 1.2; margin-bottom: 16px; }
        .compare-layout > div > p { color: var(--muted); font-size: 15px; }
        .compare-list { border-top: 1px solid var(--line); }
        .compare-row { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
        .compare-row strong { color: var(--teal-dark); }
        .compare-row span { color: var(--muted); }
        .timeline { background: #fff; }
        .timeline-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
        .milestone { position: relative; padding: 28px 24px 0 0; border-right: 1px solid var(--line); margin-right: 24px; }
        .milestone:last-child { border-right: 0; margin-right: 0; }
        .milestone::before { content: ""; position: absolute; top: -6px; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 5px #fff, 0 0 0 6px #f2cbc1; }
        .milestone b { display: block; color: var(--teal); font-size: 13px; margin-bottom: 12px; }
        .milestone h3 { font-size: 19px; margin-bottom: 8px; }
        .milestone p { color: var(--muted); font-size: 13px; }
        .ranking { background: var(--night); color: #fff; }
        .ranking .section-head p { color: #acc0c2; }
        .rank-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: 60px; }
        .rank-item { display: grid; grid-template-columns: 42px 1fr auto auto; gap: 14px; align-items: center; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.13); }
        .rank-number { color: var(--coral); font-size: 20px; font-weight: 900; }
        .rank-item h3 { font-size: 15px; }
        .rank-item small { color: #9fb2b4; }
        .rank-score { color: #f4bd64; font-weight: 800; }
        .news { background: #fff; }
        .news-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 22px; }
        .news-item { border-bottom: 1px solid var(--line); padding-bottom: 16px; }
        .news-item:first-child { grid-row: span 2; }
        .news-item img { aspect-ratio: 16 / 9; border-radius: 11px; margin-bottom: 13px; }
        .news-item:first-child img { aspect-ratio: 4 / 3; }
        .news-item h3 { font-size: 16px; line-height: 1.45; }
        .news-item time { display: block; color: var(--muted); font-size: 12px; margin-top: 7px; }
        .assurance { background: #edf5f4; }
        .assurance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
        .assurance-item { padding: 24px 20px; border: 1px solid #d2e3e0; background: rgba(255,255,255,.55); border-radius: 12px; }
        .assurance-item b { display: block; color: var(--teal-dark); font-size: 16px; margin-bottom: 8px; }
        .assurance-item p { color: var(--muted); font-size: 13px; }
        .faq { background: #fff; }
        .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 50px; }
        details { padding: 19px 0; border-bottom: 1px solid var(--line); }
        summary { cursor: pointer; list-style: none; font-size: 16px; font-weight: 800; padding-right: 30px; position: relative; }
        summary::-webkit-details-marker { display: none; }
        summary::after { content: "+"; position: absolute; right: 0; color: var(--teal); font-size: 22px; line-height: 1; }
        details[open] summary::after { content: "−"; }
        details p { color: var(--muted); font-size: 14px; padding-top: 12px; }
        .closing { padding: 58px 0; background: var(--coral); color: #fff; }
        .closing-wrap { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
        .closing h2 { font-size: clamp(25px, 3vw, 38px); line-height: 1.25; }
        .closing p { color: #ffe9e2; margin-top: 7px; }
        .closing .btn { background: #fff; color: var(--teal-dark); }
        footer { padding: 58px 0 22px; background: #102228; color: #fff; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; padding-bottom: 44px; }
        .footer-brand p { max-width: 280px; color: #9fb3b6; font-size: 13px; margin-top: 14px; }
        footer h3 { font-size: 14px; margin-bottom: 15px; }
        footer a { display: block; color: #9fb3b6; font-size: 13px; margin: 9px 0; }
        footer a:hover { color: #fff; }
        .copyright { padding-top: 20px; border-top: 1px solid rgba(255,255,255,.14); color: #7f999d; font-size: 12px; }
        :focus-visible { outline: 3px solid rgba(231,111,81,.45); outline-offset: 3px; }
        @media (max-width: 1024px) {
            .hero-grid { gap: 35px; }
            .movie-grid { grid-template-columns: repeat(3, 1fr); }
            .matrix-grid { grid-template-columns: repeat(3, 1fr); }
            .popular-grid { grid-template-columns: repeat(2, 1fr); }
            .assurance-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 32px)); }
            .nav-wrap { min-height: 68px; }
            .menu-toggle { display: block; margin-left: auto; }
            nav { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 12px 16px 18px; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 14px 26px rgba(20,46,54,.1); }
            nav.open { display: flex; }
            nav a { padding: 11px 4px; }
            nav a::after { display: none; }
            .hero { padding: 52px 0 56px; }
            .hero-grid, .compare-layout { grid-template-columns: 1fr; }
            .signal-board { max-width: 540px; }
            section { padding: 64px 0; }
            .kpis { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
            .kpi:nth-child(2) { border-right: 0; }
            .movie-grid { grid-template-columns: repeat(2, 1fr); gap: 18px 14px; }
            .matrix-grid { grid-template-columns: repeat(2, 1fr); }
            .timeline-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 0; }
            .milestone:nth-child(2) { border-right: 0; }
            .rank-list { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr 1fr; }
            .news-item:first-child { grid-row: span 1; grid-column: span 2; }
            .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
            .footer-brand { grid-column: span 3; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 39px; }
            .hero-lead { font-size: 15px; }
            .section-head { display: block; }
            .section-head p { margin-top: 12px; }
            .section-head .text-link { display: inline-block; margin-top: 15px; }
            .signal-board { gap: 9px; }
            .signal { min-height: 112px; padding: 14px; }
            .signal:nth-child(2) { margin-top: 15px; }
            .signal:nth-child(3) { margin-top: -10px; }
            .matrix-grid, .popular-grid, .faq-grid, .assurance-grid { grid-template-columns: 1fr; }
            .feature-card { grid-template-columns: 38% 1fr; }
            .feature-copy { padding: 15px; }
            .feature-copy h3 { font-size: 17px; }
            .compare-row { grid-template-columns: 1fr 1fr; gap: 6px; }
            .compare-row strong { grid-column: span 2; }
            .timeline-grid { grid-template-columns: 1fr; }
            .milestone { border-right: 0; margin-right: 0; padding-left: 4px; }
            .news-grid { grid-template-columns: 1fr; }
            .news-item:first-child { grid-column: auto; }
            .closing-wrap { display: block; }
            .closing .btn { margin-top: 20px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
            .footer-brand { grid-column: span 2; }
        }