/* roulang page: index */
:root {
      color-scheme: dark;
      --bg: #17151a;
      --bg-soft: #201d23;
      --panel: #262229;
      --panel-light: #302a31;
      --ink: #fff7f1;
      --muted: #c8bec8;
      --quiet: #928894;
      --line: rgba(255,247,241,.12);
      --coral: #ff706d;
      --orange: #ffc36c;
      --berry: #ed8ba2;
      --mint: #a8dfa0;
      --radius: 8px;
      --shadow: 0 12px 30px rgba(0,0,0,.22);
      --content: 1220px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    button { color: inherit; font: inherit; }
    img { display: block; max-width: 100%; }
    button, a { -webkit-tap-highlight-color: transparent; }
    :focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }
    .container { width: min(var(--content), calc(100% - 48px)); margin-inline: auto; }
    .topline { height: 3px; background: linear-gradient(90deg,var(--coral) 0 18%,var(--orange) 18% 28%,transparent 28%); }
    .site-header {
      position: sticky; top: 0; z-index: 20;
      background: rgba(23,21,26,.97);
      border-bottom: 1px solid var(--line);
    }
    .nav-wrap { min-height: 72px; display: flex; align-items: center; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; font-size: 20px; font-weight: 800; }
    .brand-mark {
      width: 38px; height: 38px; display: grid; place-items: center;
      color: #24191b; background: var(--coral); font-size: 13px; font-weight: 900;
      clip-path: polygon(0 0,100% 0,100% 78%,78% 100%,0 100%);
    }
    .brand em { color: var(--coral); font-style: normal; }
    .nav-links { display: flex; align-items: center; gap: 24px; margin-left: auto; }
    .nav-links a { color: var(--muted); font-size: 13px; transition: color .2s; }
    .nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
    .nav-links a[aria-current="page"]::before { content: "•"; color: var(--coral); margin-right: 6px; }
    .nav-cta, .button {
      min-height: 44px; display: inline-flex; align-items: center; justify-content: center;
      padding: 0 18px; border: 1px solid transparent; border-radius: 5px;
      font-size: 13px; font-weight: 750; transition: transform .2s, background .2s, border-color .2s;
    }
    .nav-cta, .button-primary { background: var(--coral); color: #24191b; }
    .nav-cta:hover, .button-primary:hover { background: #ff8580; transform: translateY(-2px); }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--panel); width: 44px; height: 44px; border-radius: 5px; cursor: pointer; }
    .hero {
      position: relative; overflow: hidden; min-height: 500px;
      background:
        linear-gradient(90deg,rgba(23,21,26,.99) 0%,rgba(23,21,26,.9) 46%,rgba(23,21,26,.45) 100%),
        repeating-linear-gradient(135deg, transparent 0 18px, rgba(255,255,255,.025) 18px 19px),
        #30242a;
      border-bottom: 1px solid var(--line);
    }
    .hero::after {
      content: ""; position: absolute; inset: 0 0 0 auto; width: 42%;
      background: radial-gradient(ellipse at 60% 40%,rgba(255,112,109,.18),transparent 58%);
      pointer-events: none;
    }
    .hero-inner { min-height: 500px; display: grid; grid-template-columns: 1fr .9fr; gap: 48px; align-items: center; position: relative; z-index: 1; padding-block: 52px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--orange); font-size: 11px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1 { max-width: 620px; margin: 16px 0 12px; font-size: clamp(36px,5vw,58px); line-height: 1.15; font-weight: 850; }
    h1 span { color: var(--coral); }
    .hero-subtitle { margin: 0 0 16px; color: var(--orange); font-size: 17px; font-weight: 700; }
    .hero-copy { max-width: 610px; margin: 0; color: var(--muted); line-height: 1.9; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 25px; }
    .button-secondary { border-color: rgba(255,247,241,.25); background: rgba(32,29,35,.72); color: var(--ink); }
    .button-secondary:hover { border-color: var(--coral); background: var(--panel); transform: translateY(-2px); }
    .hero-foot { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 22px; color: var(--quiet); font-size: 12px; }
    .hero-foot strong { color: var(--ink); font-variant-numeric: tabular-nums; }
    .portal { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 172px 146px; gap: 12px; transform: rotate(-1deg); }
    .portal-tile { position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; padding: 16px; border: 1px solid rgba(255,247,241,.17); background: var(--panel); box-shadow: var(--shadow); }
    .portal-tile:first-child { grid-row: span 2; }
    .portal-tile::before { content: ""; position: absolute; inset: 0; opacity: .85; background: var(--cover,linear-gradient(135deg,#704550,#22212a 72%)); }
    .portal-tile::after { content: ""; position: absolute; inset: 30% 0 0; background: linear-gradient(0deg,rgba(18,16,20,.95),transparent); }
    .portal-tile > * { position: relative; z-index: 1; }
    .portal-tile strong { font-size: 19px; }
    .portal-tile small { color: #f1dfe0; font-size: 11px; }
    .portal-stamp { align-self: flex-start; margin-bottom: auto; padding: 2px 7px; color: #271b1e; background: var(--orange); font-size: 10px; font-weight: 800; }
    .cover-rose { --cover: linear-gradient(145deg,#9d5661,#563540 45%,#27232b); }
    .cover-amber { --cover: linear-gradient(145deg,#b67847,#644334 48%,#242229); }
    .cover-plum { --cover: linear-gradient(145deg,#75536f,#41364b 50%,#222129); }
    .cover-green { --cover: linear-gradient(145deg,#66806a,#384b46 52%,#222229); }
    .cover-pink { --cover: linear-gradient(145deg,#bb687c,#684454 52%,#25222a); }
    .cover-blue { --cover: linear-gradient(145deg,#61727e,#39414b 52%,#242229); }
    main { overflow: clip; }
    .section { padding: 76px 0; border-bottom: 1px solid var(--line); }
    .section-dark { background: #1b191f; }
    .section-soft { background: #211e24; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-kicker { color: var(--coral); font-size: 11px; font-weight: 800; }
    h2 { margin: 4px 0 0; font-size: clamp(25px,3vw,34px); line-height: 1.3; font-weight: 800; }
    .section-intro { max-width: 660px; margin: 10px 0 0; color: var(--muted); line-height: 1.85; }
    .text-link { color: var(--orange); font-size: 13px; font-weight: 700; white-space: nowrap; }
    .text-link:hover { color: var(--ink); }
    .advantage-band { display: grid; grid-template-columns: 1.1fr 1fr .9fr; border: 1px solid var(--line); background: var(--panel); }
    .advantage { min-height: 155px; padding: 24px; border-right: 1px solid var(--line); position: relative; }
    .advantage:last-child { border: 0; }
    .advantage .index, .index { color: var(--coral); font: 700 11px/1.4 ui-monospace,monospace; }
    .advantage h3 { margin: 10px 0 5px; font-size: 17px; }
    .advantage p { margin: 0; color: var(--muted); font-size: 13px; }
    .advantage::after { content: ""; position: absolute; right: 18px; top: 18px; width: 6px; height: 6px; background: var(--mint); }
    .steps { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); }
    .step { padding: 24px 20px 8px 0; position: relative; }
    .step::before { content: ""; position: absolute; width: 7px; height: 7px; top: -4px; left: 0; background: var(--coral); transform: rotate(45deg); }
    .step-num { color: var(--orange); font: 700 12px ui-monospace,monospace; }
    .step h3 { margin: 10px 0 5px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .movie-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 20px; }
    .movie-card { min-width: 0; }
    .poster { position: relative; aspect-ratio: 16/10; overflow: hidden; background: var(--cover,linear-gradient(135deg,#70505a,#28242b)); border: 1px solid var(--line); transition: border-color .2s,transform .2s; }
    .poster::before { content: ""; position: absolute; inset: 0; background: linear-gradient(145deg,rgba(255,255,255,.07),transparent 40%),linear-gradient(0deg,rgba(20,17,21,.8),transparent 52%); }
    .poster::after { content: attr(data-mark); position: absolute; right: 12px; bottom: 6px; color: rgba(255,247,241,.18); font-size: 42px; font-weight: 900; }
    .movie-card:hover .poster { border-color: var(--coral); transform: translateY(-2px); }
    .badge { position: absolute; z-index: 1; top: 10px; left: 10px; padding: 2px 7px; border-radius: 2px; color: #2b2020; background: var(--coral); font-size: 10px; font-weight: 800; }
    .badge.gold { background: var(--orange); }
    .badge.green { background: var(--mint); }
    .poster-caption { position: absolute; z-index: 1; left: 12px; right: 12px; bottom: 10px; color: rgba(255,247,241,.9); font-size: 11px; }
    .movie-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 10px; }
    .movie-meta h3 { min-width: 0; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
    .rating { flex: 0 0 auto; color: var(--orange); font: 700 13px ui-monospace,monospace; }
    .movie-sub { margin-top: 3px; color: var(--quiet); font-size: 11px; }
    .popular-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 30px; }
    .feature-poster { min-height: 355px; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: end; padding: 25px; border: 1px solid var(--line); background: linear-gradient(145deg,rgba(24,20,24,.05),rgba(20,17,21,.9)),var(--cover,linear-gradient(140deg,#a55367,#30252d)); }
    .feature-poster h3 { margin: 5px 0; font-size: 27px; }
    .feature-poster p { max-width: 390px; margin: 0; color: var(--muted); }
    .feature-poster .badge { position: static; align-self: flex-start; }
    .popular-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; align-content: start; }
    .popular-item { display: flex; gap: 12px; align-items: center; min-height: 82px; border-bottom: 1px solid var(--line); }
    .mini-cover { flex: 0 0 58px; height: 58px; background: var(--cover,linear-gradient(135deg,#704550,#29252d)); }
    .popular-item h3 { margin: 0; font-size: 14px; }
    .popular-item p { margin: 2px 0 0; color: var(--quiet); font-size: 11px; }
    .genre-list { border-top: 1px solid var(--line); }
    .genre-row { display: grid; grid-template-columns: 58px 1fr 2fr 120px 20px; align-items: center; gap: 18px; min-height: 92px; border-bottom: 1px solid var(--line); transition: background .2s; }
    .genre-row:hover { background: rgba(255,255,255,.025); }
    .genre-row .index { font-size: 13px; }
    .genre-row h3 { margin: 0; font-size: 18px; }
    .genre-row p { margin: 0; color: var(--muted); font-size: 13px; }
    .genre-count { color: var(--quiet); font-size: 12px; text-align: right; }
    .genre-arrow { color: var(--coral); font-size: 18px; }
    .rank-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
    .rank-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
    .rank-row { display: grid; grid-template-columns: 34px 1fr auto auto; align-items: center; gap: 14px; min-height: 56px; border-bottom: 1px solid var(--line); }
    .rank-num { color: var(--quiet); font: 700 14px ui-monospace,monospace; }
    .rank-row:nth-child(1) .rank-num { color: var(--coral); }
    .rank-row:nth-child(2) .rank-num { color: var(--orange); }
    .rank-row:nth-child(3) .rank-num { color: var(--mint); }
    .rank-name { font-size: 13px; font-weight: 700; }
    .rank-tag { color: var(--quiet); font-size: 10px; }
    .rank-heat { color: var(--muted); font: 12px ui-monospace,monospace; }
    .special-feature { display: grid; grid-template-columns: 1fr 1.1fr; min-height: 310px; background: var(--panel); border: 1px solid var(--line); }
    .special-art { display: flex; align-items: end; padding: 24px; background: linear-gradient(0deg,rgba(20,17,21,.9),transparent 65%),var(--cover,linear-gradient(135deg,#9e645b,#37303b)); }
    .special-art h3 { margin: 0; font-size: 24px; }
    .special-content { padding: 26px; }
    .special-content > p { margin: 5px 0 16px; color: var(--muted); font-size: 13px; }
    .special-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .special-item { padding: 10px 12px; border-left: 2px solid var(--coral); background: rgba(255,255,255,.035); }
    .special-item strong { display: block; font-size: 13px; }
    .special-item span { color: var(--quiet); font-size: 11px; }
    .metrics { display: grid; grid-template-columns: repeat(4,1fr); border-block: 1px solid var(--line); }
    .metric { padding: 22px 18px; border-right: 1px solid var(--line); }
    .metric:last-child { border: 0; }
    .metric strong { display: block; color: var(--orange); font: 700 30px/1.2 ui-monospace,monospace; }
    .metric span { color: var(--muted); font-size: 12px; }
    .metric-note { margin: 12px 0 0; color: var(--quiet); font-size: 11px; }
    .compare { display: grid; grid-template-columns: 1.1fr repeat(4,1fr); border: 1px solid rgba(30,25,28,.16); background: #eee6df; color: #30272b; }
    .compare > div { padding: 16px; border-right: 1px solid rgba(48,39,43,.12); border-bottom: 1px solid rgba(48,39,43,.12); font-size: 12px; }
    .compare .compare-head { color: #fff7f1; background: #332b30; font-weight: 800; }
    .compare .compare-label { font-weight: 750; }
    .compare .compare-value { color: #5a4e53; }
    .compare .compare-value strong { color: #c65357; }
    .news-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 0 32px; }
    .news-item { display: grid; grid-template-columns: 88px 1fr; gap: 14px; align-items: center; min-height: 92px; border-bottom: 1px solid var(--line); }
    .news-thumb { width: 88px; height: 58px; background: var(--cover,linear-gradient(135deg,#7e525b,#29252d)); }
    .news-item time { color: var(--coral); font: 11px ui-monospace,monospace; }
    .news-item h3 { margin: 3px 0 0; font-size: 13px; line-height: 1.5; }
    .news-item a:hover h3 { color: var(--orange); }
    .faq-list { max-width: 900px; border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { display: flex; justify-content: space-between; gap: 20px; padding: 18px 4px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; color: var(--coral); font-size: 20px; line-height: 1; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item[open] summary { border-left: 3px solid var(--coral); padding-left: 13px; }
    .faq-item p { margin: 0; padding: 0 20px 18px 20px; color: var(--muted); font-size: 13px; }
    .assurance { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--line); background: var(--panel); }
    .assurance-item { padding: 20px; border-right: 1px solid var(--line); }
    .assurance-item:last-child { border: 0; }
    .assurance-item b { display: block; color: var(--mint); font-size: 13px; }
    .assurance-item span { color: var(--muted); font-size: 11px; }
    .closing { padding: 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid rgba(255,112,109,.55); background: linear-gradient(110deg,#292128,#211d23); }
    .closing h2 { font-size: 27px; }
    .closing p { margin: 6px 0 0; color: var(--muted); }
    .closing-actions { display: flex; gap: 10px; flex-wrap: wrap; }
    .site-footer { padding: 48px 0 22px; background: #131216; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 34px; padding-bottom: 32px; }
    .footer-brand p { max-width: 280px; color: var(--quiet); font-size: 12px; }
    .footer-col h3 { margin: 0 0 12px; color: var(--muted); font-size: 12px; }
    .footer-col a { display: block; width: fit-content; margin: 7px 0; color: var(--quiet); font-size: 12px; }
    .footer-col a:hover { color: var(--coral); }
    .copyright { padding-top: 16px; border-top: 1px solid var(--line); color: var(--quiet); font-size: 11px; }
    .mobile-bar { display: none; }
    @media (max-width: 1024px) {
      .nav-wrap { gap: 16px; }
      .nav-links { gap: 14px; }
      .nav-links a { font-size: 12px; }
      .movie-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
      .genre-row { grid-template-columns: 42px 1fr 1.6fr 95px 16px; gap: 12px; }
      .popular-layout { gap: 20px; }
      .footer-grid { gap: 22px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 36px,var(--content)); }
      .nav-wrap { min-height: 64px; }
      .menu-toggle { display: grid; place-items: center; margin-left: auto; }
      .menu-toggle span { width: 18px; height: 2px; background: var(--ink); position: relative; }
      .menu-toggle span::before,.menu-toggle span::after { content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink); }
      .menu-toggle span::before { top: -6px; }
      .menu-toggle span::after { top: 6px; }
      .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; padding: 10px 18px 18px; background: #1b191f; border-bottom: 1px solid var(--line); }
      .nav-links.is-open { display: grid; gap: 0; }
      .nav-links a { min-height: 46px; display: flex; align-items: center; border-bottom: 1px solid var(--line); font-size: 14px; }
      .nav-cta { display: none; }
      .hero-inner { grid-template-columns: 1fr; gap: 28px; padding-block: 42px; }
      .hero { min-height: auto; }
      .hero-inner { min-height: 0; }
      .portal { max-width: 600px; width: 100%; grid-template-rows: 150px 120px; }
      .section { padding: 56px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 12px; margin-bottom: 24px; }
      .advantage-band { grid-template-columns: 1fr; }
      .advantage { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
      .advantage:last-child { border-bottom: 0; }
      .steps { grid-template-columns: 1fr 1fr; row-gap: 24px; }
      .movie-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px 14px; }
      .popular-layout { grid-template-columns: 1fr; }
      .feature-poster { min-height: 280px; }
      .genre-row { grid-template-columns: 34px 1fr 24px; gap: 10px; padding: 13px 0; }
      .genre-row p { grid-column: 2; grid-row: 2; }
      .genre-count { display: none; }
      .genre-arrow { grid-column: 3; grid-row: 1 / span 2; }
      .rank-columns { grid-template-columns: 1fr; gap: 0; }
      .special-feature { grid-template-columns: 1fr; }
      .special-art { min-height: 220px; }
      .metrics { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .compare { grid-template-columns: 1fr 1fr; }
      .compare > div { min-height: 50px; }
      .compare .compare-head:first-child { display: none; }
      .news-grid { grid-template-columns: 1fr; }
      .assurance { grid-template-columns: 1fr 1fr; }
      .assurance-item:nth-child(2) { border-right: 0; }
      .assurance-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .closing { padding: 28px; align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      body { padding-bottom: 64px; }
      .mobile-bar { position: fixed; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; z-index: 30; bottom: 0; left: 0; right: 0; padding: 8px 16px calc(8px + env(safe-area-inset-bottom)); background: rgba(19,18,22,.98); border-top: 1px solid var(--line); }
      .mobile-bar a { min-height: 44px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 4px; font-size: 12px; font-weight: 700; }
      .mobile-bar a:first-child { color: #251a1c; background: var(--coral); border-color: var(--coral); }
    }
    @media (max-width: 520px) {
      .container { width: calc(100% - 32px); }
      .brand { font-size: 18px; }
      .hero-inner { padding-block: 34px; }
      h1 { font-size: 39px; }
      .hero-subtitle { font-size: 15px; }
      .hero-copy { font-size: 13px; }
      .hero-actions { gap: 8px; }
      .hero-actions .button { flex: 1 1 auto; padding-inline: 12px; }
      .portal { grid-template-rows: 138px 108px; gap: 8px; }
      .portal-tile { padding: 11px; }
      .portal-tile strong { font-size: 15px; }
      .movie-grid { gap: 17px 10px; }
      .poster { aspect-ratio: 4/3; }
      .movie-meta { align-items: flex-start; }
      .movie-meta h3 { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
      .popular-list { gap: 0 10px; }
      .popular-item { gap: 8px; }
      .mini-cover { flex-basis: 46px; height: 48px; }
      .popular-item h3 { font-size: 12px; }
      .popular-item p { font-size: 10px; }
      .special-content { padding: 20px 16px; }
      .special-list { grid-template-columns: 1fr; }
      .rank-row { grid-template-columns: 26px 1fr auto; gap: 9px; }
      .rank-tag { display: none; }
      .news-item { grid-template-columns: 72px 1fr; gap: 11px; }
      .news-thumb { width: 72px; height: 52px; }
      .closing { padding: 23px 18px; }
      .closing h2 { font-size: 23px; }
      .closing-actions { width: 100%; }
      .closing-actions .button { flex: 1; padding-inline: 10px; }
      .footer-grid { gap: 22px 14px; }
      .footer-brand { grid-column: 1 / -1; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }