/* roulang page: index */
:root {
      --ink: #201d19;
      --muted: #77736c;
      --paper: #f7f5f0;
      --white: #fffefa;
      --line: #e8e3d9;
      --accent: #b87438;
      --accent-dark: #8e5427;
      --gold: #d8b779;
      --green: #4f7565;
      --dark: #171511;
      --dark-soft: #242019;
      --radius: 8px;
      --shadow: 0 12px 30px rgba(40, 31, 20, .08);
      --content: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    a:hover { color: var(--accent-dark); }
    a:focus-visible, button:focus-visible, summary:focus-visible {
      outline: 3px solid rgba(184, 116, 56, .5);
      outline-offset: 3px;
    }
    img { display: block; max-width: 100%; }
    button { font: inherit; }
    .container { width: min(var(--content), calc(100% - 48px)); margin-inline: auto; }
    .site-header {
      position: sticky; top: 0; z-index: 20;
      background: rgba(255, 254, 250, .96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; white-space: nowrap; }
    .brand-mark {
      width: 34px; height: 34px; display: grid; place-items: center; border-radius: 7px;
      color: #211a12; background: var(--gold); font-size: 16px; font-weight: 900;
    }
    .nav-links { display: flex; align-items: center; gap: 25px; margin-left: auto; }
    .nav-links a { color: #565148; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--accent-dark); }
    .nav-cta, .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 18px; border: 1px solid transparent; border-radius: 5px;
      background: var(--accent); color: white; font-weight: 700; font-size: 14px;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .nav-cta:hover, .button:hover { color: #fff; background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 7px 16px rgba(142,84,39,.2); }
    .button:active, .nav-cta:active { transform: translateY(0); }
    .button-secondary { background: transparent; border-color: rgba(255,255,255,.42); color: white; }
    .button-secondary:hover { background: rgba(255,255,255,.12); }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 5px;
      color: var(--ink); background: var(--white); cursor: pointer;
    }
    .hero {
      position: relative; min-height: 540px; display: flex; align-items: center; overflow: hidden;
      color: white; background: var(--dark);
    }
    .hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .42; }
    .hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(18,16,13,.92) 0%, rgba(18,16,13,.72) 54%, rgba(18,16,13,.28) 100%); }
    .hero-inner { position: relative; z-index: 1; padding-block: 76px 68px; }
    .hero-copy { max-width: 720px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--gold); font-size: 12px; font-weight: 800; letter-spacing: 1px; }
    .eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--gold); }
    h1 { margin: 16px 0 14px; max-width: 700px; font-size: 48px; line-height: 1.2; font-weight: 800; }
    h1 em { color: var(--gold); font-style: normal; }
    .hero-subtitle { margin: 0 0 12px; color: #e8dfd0; font-size: 19px; font-weight: 600; }
    .hero-description { max-width: 690px; margin: 0; color: #d0c9be; font-size: 15px; line-height: 1.9; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
    .hero-note { margin-top: 20px; color: #c4bbad; font-size: 12px; }
    .hero-note strong { color: var(--gold); }
    main { padding-bottom: 104px; }
    section { padding: 76px 0; border-bottom: 1px solid var(--line); }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 30px; }
    .section-kicker { margin: 0 0 7px; color: var(--accent-dark); font-size: 11px; font-weight: 800; letter-spacing: 1.2px; text-transform: uppercase; }
    h2 { margin: 0; font-size: 30px; line-height: 1.35; font-weight: 800; }
    .section-intro { max-width: 680px; margin: 10px 0 0; color: var(--muted); }
    .text-link { color: var(--accent-dark); font-size: 13px; font-weight: 700; white-space: nowrap; }
    .text-link span { margin-left: 5px; }
    .kpi-band { padding: 27px 0; background: #eae4d8; border: 0; }
    .kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .kpi { padding: 5px 20px; border-left: 1px solid #d4cbbb; }
    .kpi:first-child { border-left: 0; }
    .kpi strong { display: block; color: var(--accent-dark); font-size: 24px; line-height: 1.3; }
    .kpi span { color: #645e54; font-size: 12px; }
    .feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .feature { padding: 20px 20px 19px 0; border-top: 2px solid var(--gold); }
    .feature-icon { color: var(--accent-dark); font-size: 19px; font-weight: 800; }
    .feature h3, .scene h3 { margin: 10px 0 5px; font-size: 17px; }
    .feature p, .scene p { margin: 0; color: var(--muted); font-size: 13px; }
    .scene-band { background: var(--white); }
    .scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .scene { padding: 22px 22px 25px; border-right: 1px solid var(--line); }
    .scene:last-child { border-right: 0; }
    .scene-num { color: var(--accent); font-size: 12px; font-weight: 800; }
    .content-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 22px 16px; }
    .content-card { min-width: 0; }
    .cover-wrap { position: relative; overflow: hidden; aspect-ratio: 3 / 4; background: #ddd5c8; border-radius: 5px; }
    .cover-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
    .content-card:hover .cover-wrap img { transform: scale(1.04); }
    .cover-label { position: absolute; top: 9px; left: 9px; padding: 3px 7px; border-radius: 3px; background: rgba(25,22,18,.82); color: white; font-size: 10px; font-weight: 700; }
    .cover-score { position: absolute; right: 8px; bottom: 8px; padding: 3px 7px; background: var(--gold); color: #211a12; border-radius: 3px; font-size: 11px; font-weight: 800; }
    .content-card h3 { overflow: hidden; margin: 9px 0 2px; font-size: 13px; line-height: 1.5; white-space: nowrap; text-overflow: ellipsis; }
    .content-card p { margin: 0; color: var(--muted); font-size: 11px; }
    .popular-band { background: var(--dark); color: white; }
    .popular-band .section-kicker { color: var(--gold); }
    .popular-band .section-intro { color: #bdb6aa; }
    .popular-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 18px; }
    .popular-item { position: relative; min-height: 255px; overflow: hidden; background: #2a251e; }
    .popular-item:first-child { min-height: 370px; grid-row: span 2; }
    .popular-item img { position: absolute; width: 100%; height: 100%; object-fit: cover; opacity: .7; transition: transform .35s ease; }
    .popular-item:hover img { transform: scale(1.04); }
    .popular-item::after { content: ""; position: absolute; inset: 35% 0 0; background: linear-gradient(transparent, rgba(15,13,11,.9)); }
    .popular-copy { position: absolute; z-index: 1; right: 18px; bottom: 16px; left: 18px; }
    .popular-copy span { color: var(--gold); font-size: 11px; font-weight: 700; }
    .popular-copy h3 { margin: 3px 0; font-size: 18px; }
    .popular-copy p { margin: 0; color: #ddd5c9; font-size: 12px; }
    .category-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 55px; align-items: start; }
    .category-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
    .category-item { padding: 16px 0; border-top: 1px solid var(--line); }
    .category-item h3 { margin: 0 0 4px; font-size: 16px; }
    .category-item p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
    .ranking-band { background: #eee9df; }
    .rank-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
    .rank-row { display: grid; grid-template-columns: 38px minmax(0,1fr) 78px 48px; align-items: center; gap: 10px; min-height: 54px; border-bottom: 1px solid #dcd5c8; }
    .rank-no { color: #8b8376; font-weight: 800; font-size: 13px; }
    .rank-row:nth-child(-n+3) .rank-no { color: var(--accent-dark); font-size: 18px; }
    .rank-title { overflow: hidden; font-weight: 700; white-space: nowrap; text-overflow: ellipsis; font-size: 13px; }
    .rank-tag { color: var(--muted); font-size: 11px; }
    .rank-score { color: var(--accent-dark); font-size: 12px; font-weight: 800; text-align: right; }
    .showcase { display: grid; grid-template-columns: 1fr 1fr; min-height: 350px; background: var(--dark); color: white; }
    .showcase-image { min-height: 350px; width: 100%; height: 100%; object-fit: cover; }
    .showcase-copy { padding: 42px; align-self: center; }
    .showcase-copy h3 { margin: 0 0 12px; font-size: 24px; }
    .showcase-copy p { margin: 0 0 17px; color: #cec6b9; }
    .showcase-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; color: #e7dfd2; font-size: 13px; }
    .showcase-list li::before { content: "•"; margin-right: 9px; color: var(--gold); }
    .feedback-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
    .quote { padding: 18px 0; border-top: 1px solid var(--line); }
    .quote blockquote { margin: 0 0 11px; color: #464138; font-size: 15px; }
    .quote cite { color: var(--muted); font-size: 11px; font-style: normal; }
    .comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); }
    .comparison-col { padding: 24px 28px; }
    .comparison-col + .comparison-col { background: #eee9df; border-left: 1px solid var(--line); }
    .comparison-col h3 { margin: 0 0 13px; font-size: 16px; }
    .comparison-col ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 13px; }
    .comparison-col li + li { margin-top: 7px; }
    .news-band { background: var(--white); }
    .news-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px; }
    .news-item { display: grid; grid-template-columns: 112px 1fr; gap: 15px; padding: 15px 0; border-top: 1px solid var(--line); }
    .news-item img { width: 112px; height: 76px; object-fit: cover; border-radius: 4px; }
    .news-item h3 { margin: 2px 0 5px; font-size: 14px; line-height: 1.5; }
    .news-item time { color: var(--muted); font-size: 11px; }
    .topic-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 14px; }
    .topic { min-height: 165px; padding: 22px; background: #eae4d8; border-left: 3px solid var(--gold); }
    .topic:nth-child(2) { background: #e6ece7; border-color: var(--green); }
    .topic:nth-child(3) { background: #eee5df; border-color: #b96e51; }
    .topic h3 { margin: 0 0 8px; font-size: 17px; }
    .topic p { margin: 0; color: #625d54; font-size: 12px; }
    .topic a { display: inline-block; margin-top: 13px; color: var(--accent-dark); font-size: 12px; font-weight: 800; }
    .faq-band { background: #f0ede6; }
    .faq-list { max-width: 850px; border-top: 1px solid #dcd5c8; }
    .faq-item { border-bottom: 1px solid #dcd5c8; }
    .faq-item summary { position: relative; padding: 17px 36px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; color: var(--accent-dark); font-size: 20px; top: 10px; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { margin: -3px 40px 17px 0; color: var(--muted); font-size: 13px; }
    .notice-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 50px; }
    .notice-list { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 25px; }
    .notice { padding-left: 14px; border-left: 2px solid var(--gold); }
    .notice h3 { margin: 0 0 4px; font-size: 14px; }
    .notice p { margin: 0; color: var(--muted); font-size: 12px; }
    .assurance-band { padding: 28px 0; background: #e7ebe5; border-bottom: 0; }
    .assurance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .assurance { display: flex; align-items: center; gap: 11px; color: #425a4d; font-size: 12px; font-weight: 700; }
    .assurance b { display: grid; place-items: center; flex: 0 0 30px; height: 30px; border-radius: 50%; background: #d0ddd2; font-size: 13px; }
    .closing { padding: 48px 0; background: var(--dark); color: white; border: 0; }
    .closing-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .closing h2 { font-size: 24px; }
    .closing p { margin: 6px 0 0; color: #c6beb1; font-size: 13px; }
    .site-footer { padding: 34px 0 72px; background: #12110f; color: #c5beb2; }
    .footer-main { display: flex; justify-content: space-between; gap: 30px; padding-bottom: 23px; border-bottom: 1px solid #39352e; }
    .footer-brand { color: white; font-weight: 800; font-size: 17px; }
    .footer-copy { max-width: 430px; margin: 8px 0 0; color: #958e83; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 20px; align-content: start; font-size: 12px; }
    .footer-links a:hover { color: var(--gold); }
    .copyright { display: flex; justify-content: space-between; gap: 15px; padding-top: 17px; color: #827b70; font-size: 11px; }
    .floating-cta { position: fixed; right: 22px; bottom: 18px; z-index: 15; display: flex; align-items: center; gap: 18px; padding: 10px 12px 10px 18px; background: #211d18; color: white; border: 1px solid #51483c; border-radius: 6px; box-shadow: var(--shadow); }
    .floating-cta span { font-size: 12px; }
    .floating-cta .button { min-height: 38px; padding-inline: 13px; font-size: 12px; }
    @media (max-width: 1024px) {
      .content-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
      .nav-links { gap: 15px; }
      .category-layout, .notice-layout { gap: 30px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 36px, var(--content)); }
      .nav-wrap { min-height: 64px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-links {
        display: none; position: absolute; top: 64px; left: 0; right: 0; padding: 12px 18px 18px;
        background: var(--white); border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
        flex-direction: column; align-items: stretch; gap: 0;
      }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 12px 6px; border-bottom: 1px solid #f0ede7; }
      .nav-cta { display: none; }
      h1 { font-size: 40px; }
      .hero { min-height: 510px; }
      section { padding: 58px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 12px; }
      .kpi-grid { grid-template-columns: 1fr 1fr; row-gap: 20px; }
      .kpi:nth-child(3) { border-left: 0; }
      .feature-row { gap: 18px; }
      .scene-grid { grid-template-columns: 1fr 1fr; }
      .scene:nth-child(2) { border-right: 0; }
      .scene:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .content-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .popular-grid { grid-template-columns: 1fr 1fr; }
      .popular-item:first-child { min-height: 300px; grid-column: span 2; grid-row: auto; }
      .popular-item { min-height: 220px; }
      .category-layout, .notice-layout { grid-template-columns: 1fr; }
      .rank-list { gap: 0 18px; }
      .showcase { grid-template-columns: 1fr; }
      .showcase-image { min-height: 240px; max-height: 310px; }
      .showcase-copy { padding: 28px; }
      .feedback-grid { grid-template-columns: 1fr; gap: 8px; }
      .news-list { grid-template-columns: 1fr; }
      .topic-grid { grid-template-columns: 1fr 1fr; }
      .topic:first-child { grid-column: span 2; }
      .assurance-grid { grid-template-columns: 1fr 1fr; }
      .closing-inner { align-items: start; flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: calc(100% - 32px); }
      .brand { font-size: 16px; }
      .hero { min-height: 540px; }
      .hero-inner { padding-block: 58px; }
      h1 { font-size: 34px; }
      .hero-subtitle { font-size: 16px; }
      .hero-actions { flex-direction: column; align-items: stretch; max-width: 260px; }
      .button { width: 100%; }
      h2 { font-size: 25px; }
      .feature-row { grid-template-columns: 1fr; gap: 10px; }
      .feature { padding: 14px 0; }
      .scene { padding: 16px 12px; }
      .content-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; }
      .popular-grid { gap: 10px; }
      .popular-item:first-child { min-height: 250px; }
      .popular-item { min-height: 165px; }
      .popular-copy { right: 11px; bottom: 10px; left: 11px; }
      .popular-copy h3 { font-size: 14px; }
      .category-list { grid-template-columns: 1fr; }
      .rank-list { grid-template-columns: 1fr; }
      .rank-row { grid-template-columns: 34px minmax(0,1fr) 64px 42px; }
      .comparison { grid-template-columns: 1fr; }
      .comparison-col + .comparison-col { border-left: 0; border-top: 1px solid var(--line); }
      .news-item { grid-template-columns: 94px 1fr; gap: 12px; }
      .news-item img { width: 94px; height: 68px; }
      .topic-grid { grid-template-columns: 1fr; }
      .topic:first-child { grid-column: auto; }
      .notice-list { grid-template-columns: 1fr; }
      .assurance-grid { grid-template-columns: 1fr 1fr; gap: 14px 8px; }
      .assurance { font-size: 11px; }
      .footer-main, .copyright { flex-direction: column; }
      .floating-cta { right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); left: 12px; justify-content: space-between; }
      main { padding-bottom: 90px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }