/* roulang page: index */
:root {
      --ink: #241d28;
      --muted: #766d78;
      --paper: #fffaf7;
      --cream: #f6eee8;
      --rose: #e8667d;
      --rose-dark: #b8445c;
      --plum: #42253e;
      --gold: #d9a451;
      --line: #eadedb;
      --white: #ffffff;
      --shadow: 0 18px 50px rgba(67, 35, 51, .12);
      --soft-shadow: 0 8px 24px rgba(67, 35, 51, .08);
      --radius: 22px;
      --radius-sm: 13px;
      --container: 1180px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; width: 100%; object-fit: cover; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    .container { width: min(calc(100% - 48px), var(--container)); margin: 0 auto; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--rose-dark);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .12em;
      text-transform: uppercase;
    }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--gold); }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 32px;
    }
    .section-head h2 {
      margin: 8px 0 0;
      font-family: Georgia, "Songti SC", serif;
      font-size: clamp(27px, 3vw, 42px);
      line-height: 1.2;
      letter-spacing: 0;
    }
    .section-head p {
      max-width: 530px;
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }
    .section { padding: 88px 0; }
    .section.alt { background: var(--cream); }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 0 21px;
      border: 1px solid transparent;
      border-radius: 999px;
      font-weight: 700;
      transition: .25s ease;
    }
    .btn-primary { color: var(--white); background: var(--rose); box-shadow: 0 9px 20px rgba(232,102,125,.24); }
    .btn-primary:hover { background: var(--rose-dark); transform: translateY(-2px); }
    .btn-light { color: var(--plum); background: var(--white); border-color: var(--line); }
    .btn-light:hover { border-color: var(--rose); color: var(--rose-dark); transform: translateY(-2px); }
    .btn:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid rgba(217,164,81,.65); outline-offset: 3px; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,250,247,.92);
      border-bottom: 1px solid rgba(234,222,219,.85);
      backdrop-filter: blur(16px);
    }
    .nav-wrap { display: flex; align-items: center; min-height: 76px; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; font-weight: 900; }
    .brand-mark {
      display: grid;
      width: 38px;
      height: 38px;
      place-items: center;
      color: var(--white);
      background: var(--plum);
      border-radius: 12px 12px 12px 4px;
      font-family: Georgia, serif;
      font-size: 20px;
    }
    .brand-name { font-size: 16px; letter-spacing: .02em; }
    .nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
    .nav-links a { padding: 9px 12px; color: var(--muted); border-radius: 10px; font-size: 14px; font-weight: 700; transition: .2s ease; }
    .nav-links a:hover, .nav-links a.active { color: var(--rose-dark); background: #fbe9e8; }
    .nav-search { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--white); }
    .nav-search input { width: 112px; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 13px; }
    .nav-search button { padding: 0; border: 0; color: var(--rose-dark); background: transparent; font-size: 17px; }
    .menu-toggle { display: none; border: 0; background: none; color: var(--plum); font-size: 25px; }

    .hero { position: relative; overflow: hidden; padding: 100px 0 86px; background: var(--plum); color: var(--white); }
    .hero::after {
      content: "";
      position: absolute;
      right: -10%;
      top: -35%;
      width: 65%;
      height: 150%;
      background: linear-gradient(135deg, rgba(232,102,125,.75), rgba(217,164,81,.32));
      transform: rotate(-13deg);
      opacity: .85;
    }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 70px; }
    .hero-copy { max-width: 660px; }
    .hero h1 { margin: 14px 0 20px; font-family: Georgia, "Songti SC", serif; font-size: clamp(38px, 5.5vw, 72px); line-height: 1.1; letter-spacing: 0; }
    .hero h1 em { color: #ffd48c; font-style: normal; }
    .hero-lead { max-width: 620px; margin: 0 0 28px; color: #eadfe4; font-size: 17px; line-height: 1.9; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero .btn-light { color: var(--white); background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.28); }
    .hero .btn-light:hover { background: var(--white); color: var(--plum); }
    .hero-panel { position: relative; max-width: 430px; justify-self: end; padding: 20px; border: 1px solid rgba(255,255,255,.22); border-radius: 26px; background: rgba(255,255,255,.12); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
    .hero-image { height: 265px; border-radius: 17px; object-position: center 25%; }
    .hero-panel-foot { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 17px 3px 0; }
    .hero-panel-foot strong { display: block; font-size: 18px; }
    .hero-panel-foot span { color: #e8dce1; font-size: 13px; }
    .signal { display: flex; align-items: center; gap: 6px; color: #ffd48c; font-weight: 800; font-size: 13px; }
    .signal::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #70db9b; box-shadow: 0 0 0 5px rgba(112,219,155,.14); }

    .ticker { border-bottom: 1px solid var(--line); background: #fff4f1; }
    .ticker-inner { display: flex; align-items: center; gap: 16px; min-height: 50px; overflow: hidden; }
    .ticker-label { color: var(--rose-dark); font-weight: 900; font-size: 13px; white-space: nowrap; }
    .ticker-text { color: var(--muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

    .card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
    .video-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: var(--soft-shadow); transition: .25s ease; }
    .video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #eab0b4; }
    .thumb { position: relative; overflow: hidden; aspect-ratio: 1.42 / 1; background: #e8d9d5; }
    .thumb img { height: 100%; transition: transform .45s ease; }
    .video-card:hover .thumb img { transform: scale(1.05); }
    .thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(27,16,26,.5)); pointer-events: none; }
    .badge { position: absolute; z-index: 1; top: 12px; left: 12px; padding: 4px 8px; color: var(--white); background: var(--rose-dark); border-radius: 7px; font-size: 11px; font-weight: 800; }
    .duration { position: absolute; z-index: 1; right: 12px; bottom: 10px; color: var(--white); font-size: 12px; font-weight: 700; }
    .play {
      position: absolute; z-index: 1; right: 12px; top: 12px;
      display: grid; width: 34px; height: 34px; place-items: center;
      color: var(--plum); background: rgba(255,255,255,.88); border-radius: 50%; font-size: 13px;
    }
    .card-body { padding: 16px 17px 17px; }
    .card-body h3 { overflow: hidden; margin: 0 0 9px; font-size: 16px; line-height: 1.45; white-space: nowrap; text-overflow: ellipsis; }
    .meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 12px; }
    .rating { color: var(--gold); font-weight: 900; }
    .more-link { display: inline-flex; align-items: center; gap: 5px; color: var(--rose-dark); font-weight: 800; font-size: 13px; white-space: nowrap; }
    .more-link:hover { color: var(--plum); }

    .feature-grid { display: grid; grid-template-columns: 1.3fr .7fr .7fr; gap: 20px; }
    .feature-card { position: relative; min-height: 260px; overflow: hidden; padding: 27px; border-radius: var(--radius); color: var(--white); background: var(--plum); }
    .feature-card:first-child { grid-row: span 2; min-height: 540px; }
    .feature-card img { position: absolute; inset: 0; height: 100%; opacity: .65; }
    .feature-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(37,18,35,.92), rgba(37,18,35,.06)); }
    .feature-content { position: absolute; z-index: 1; right: 27px; bottom: 25px; left: 27px; }
    .feature-content h3 { margin: 8px 0 5px; font-family: Georgia, serif; font-size: 25px; line-height: 1.25; }
    .feature-content p { margin: 0; color: #eadfe4; font-size: 13px; }
    .feature-card:not(:first-child) .feature-content h3 { font-size: 19px; }

    .benefit-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .benefit { padding: 25px 30px; border-right: 1px solid var(--line); }
    .benefit:last-child { border-right: 0; }
    .benefit-icon { color: var(--rose); font-size: 25px; }
    .benefit h3 { margin: 7px 0 4px; font-size: 17px; }
    .benefit p { margin: 0; color: var(--muted); font-size: 13px; }

    .channel-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
    .channel { padding: 23px 20px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(255,255,255,.6); transition: .25s ease; }
    .channel:hover { background: var(--white); border-color: #e7a8ad; transform: translateY(-4px); }
    .channel-number { color: var(--gold); font: 700 13px Georgia, serif; }
    .channel h3 { margin: 8px 0 8px; font-size: 17px; }
    .channel p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

    .rank-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 55px; align-items: start; }
    .rank-intro { padding: 26px; border-radius: var(--radius); background: var(--plum); color: var(--white); }
    .rank-intro h3 { margin: 10px 0; font-family: Georgia, serif; font-size: 28px; }
    .rank-intro p { margin: 0; color: #e8dce1; font-size: 14px; }
    .rank-stat { display: flex; gap: 24px; margin-top: 30px; }
    .rank-stat strong { display: block; font-family: Georgia, serif; font-size: 29px; color: #ffd48c; }
    .rank-stat span { color: #d9c7d0; font-size: 12px; }
    .ranking { border-top: 1px solid var(--line); }
    .rank-item { display: grid; grid-template-columns: 42px 1fr auto auto; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
    .rank-no { color: var(--rose); font: 700 20px Georgia, serif; }
    .rank-title { font-weight: 800; }
    .rank-tag { padding: 4px 8px; color: var(--rose-dark); background: #fbe9e8; border-radius: 6px; font-size: 11px; }
    .rank-hot { color: var(--gold); font-size: 13px; font-weight: 800; }

    .news-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
    .news-list { display: grid; gap: 15px; }
    .news-item { display: grid; grid-template-columns: 118px 1fr; gap: 16px; align-items: center; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
    .news-item img { height: 76px; border-radius: 11px; }
    .news-item h3 { margin: 0 0 5px; font-size: 15px; line-height: 1.45; }
    .news-item time { color: var(--muted); font-size: 12px; }
    .quote-panel { padding: 37px; border-radius: var(--radius); background: #fbe9e8; }
    .quote-panel blockquote { margin: 18px 0 25px; font-family: Georgia, "Songti SC", serif; font-size: 27px; line-height: 1.5; }
    .quote-author { display: flex; align-items: center; gap: 11px; color: var(--muted); font-size: 13px; }
    .avatar { display: grid; width: 34px; height: 34px; place-items: center; color: var(--white); background: var(--rose); border-radius: 50%; font-weight: 800; }

    .faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .faq-item { padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--white); }
    .faq-item summary { cursor: pointer; display: flex; justify-content: space-between; gap: 16px; list-style: none; font-weight: 800; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; color: var(--rose); font-size: 20px; line-height: 1; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { margin: 13px 0 0; color: var(--muted); font-size: 14px; }

    .final-cta { padding: 70px 0; color: var(--white); background: var(--rose-dark); }
    .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
    .cta-inner h2 { margin: 0 0 8px; font-family: Georgia, serif; font-size: clamp(28px, 4vw, 46px); }
    .cta-inner p { max-width: 600px; margin: 0; color: #ffe8e9; }
    .final-cta .btn { color: var(--plum); background: #ffd48c; }
    .final-cta .btn:hover { background: var(--white); }

    .site-footer { padding: 58px 0 25px; color: #d8c7d0; background: #271924; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 45px; padding-bottom: 45px; }
    .footer-brand { color: var(--white); }
    .footer-brand p { max-width: 300px; margin: 16px 0 0; color: #aa97a3; font-size: 13px; }
    .footer-col h3 { margin: 3px 0 13px; color: #ffd48c; font-size: 14px; }
    .footer-col a { display: block; margin: 8px 0; color: #bfaeb7; font-size: 13px; }
    .footer-col a:hover { color: var(--white); }
    .copyright { padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: #93808b; font-size: 12px; }

    @media (max-width: 1024px) {
      .hero-inner { gap: 35px; }
      .card-grid { grid-template-columns: repeat(3, 1fr); }
      .channel-grid { grid-template-columns: repeat(3, 1fr); }
      .feature-grid { grid-template-columns: 1fr 1fr; }
      .feature-card:first-child { grid-column: span 2; grid-row: auto; min-height: 390px; }
    }
    @media (max-width: 768px) {
      .container { width: min(calc(100% - 32px), var(--container)); }
      .nav-wrap { min-height: 68px; }
      .nav-search { display: none; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-links { display: none; position: absolute; top: 68px; right: 16px; left: 16px; flex-direction: column; align-items: stretch; padding: 10px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: var(--shadow); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 12px 14px; }
      .hero { padding: 70px 0 62px; }
      .hero-inner { grid-template-columns: 1fr; }
      .hero-panel { justify-self: stretch; max-width: none; }
      .hero-image { height: 230px; }
      .section { padding: 65px 0; }
      .section-head, .cta-inner { align-items: flex-start; flex-direction: column; }
      .section-head { gap: 13px; margin-bottom: 24px; }
      .card-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
      .feature-grid { gap: 14px; }
      .feature-card { min-height: 220px; padding: 20px; }
      .feature-card:first-child { min-height: 310px; }
      .feature-content { right: 20px; bottom: 19px; left: 20px; }
      .benefit-strip { grid-template-columns: 1fr; }
      .benefit { border-right: 0; border-bottom: 1px solid var(--line); }
      .benefit:last-child { border-bottom: 0; }
      .rank-layout, .news-layout { grid-template-columns: 1fr; gap: 30px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    }
    @media (max-width: 520px) {
      .brand-name { max-width: 175px; overflow: hidden; font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
      .hero h1 { font-size: 39px; }
      .hero-lead { font-size: 15px; }
      .hero-actions .btn { width: 100%; }
      .card-grid { grid-template-columns: 1fr 1fr; }
      .card-body { padding: 12px; }
      .card-body h3 { font-size: 14px; }
      .feature-grid { grid-template-columns: 1fr; }
      .feature-card:first-child { grid-column: auto; min-height: 300px; }
      .channel-grid, .faq-grid { grid-template-columns: 1fr; }
      .rank-item { grid-template-columns: 31px 1fr auto; gap: 8px; }
      .rank-tag { display: none; }
      .news-item { grid-template-columns: 92px 1fr; gap: 11px; }
      .news-item img { height: 66px; }
      .quote-panel { padding: 25px; }
      .quote-panel blockquote { font-size: 22px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
      .footer-brand { grid-column: span 2; }
    }