/* roulang page: index */
:root {
      --ink: #1b2430;
      --muted: #687482;
      --soft: #f5f7f8;
      --line: #e1e7eb;
      --paper: #ffffff;
      --teal: #087f82;
      --teal-dark: #075d61;
      --coral: #d85d4d;
      --gold: #d59b43;
      --shadow: 0 18px 50px rgba(24, 46, 58, .09);
      --radius: 18px;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, 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; }
    .container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
    .site-header {
      position: sticky; top: 0; z-index: 20;
      background: rgba(255,255,255,.94);
      border-bottom: 1px solid rgba(225,231,235,.85);
      backdrop-filter: blur(16px);
    }
    .nav-wrap { height: 76px; display: flex; align-items: center; gap: 30px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; font-weight: 800; }
    .brand-mark {
      width: 38px; height: 38px; border-radius: 11px;
      display: grid; place-items: center; color: #fff; background: var(--teal);
      box-shadow: 0 7px 18px rgba(8,127,130,.25); font-size: 17px;
    }
    .brand-name { font-size: 16px; letter-spacing: .2px; }
    .nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
    .nav a { padding: 9px 13px; border-radius: 9px; color: var(--muted); font-size: 14px; transition: .2s ease; }
    .nav a:hover, .nav a.active { color: var(--teal-dark); background: #edf7f6; }
    .nav-cta {
      color: #fff !important; background: var(--coral) !important;
      padding: 10px 17px !important; box-shadow: 0 7px 16px rgba(216,93,77,.2);
    }
    .nav-cta:hover { background: #bc493c !important; transform: translateY(-1px); }
    .menu-button { display: none; border: 0; background: transparent; font-size: 24px; color: var(--ink); }
    .hero {
      position: relative; overflow: hidden; min-height: 610px;
      display: flex; align-items: center;
      color: #fff; background: #163b43;
    }
    .hero::before {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(9,43,51,.94) 0%, rgba(9,43,51,.72) 44%, rgba(9,43,51,.25) 100%),
      url("https://images.unsplash.com/photo-1485846234645-a62644f84728?auto=format&fit=crop&w=1800&q=88") center/cover;
    }
    .hero-inner { position: relative; z-index: 1; width: 100%; padding: 92px 0 82px; }
    .hero-copy { max-width: 680px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: #b4e5dd; font-size: 13px; font-weight: 700; letter-spacing: 1px; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--coral); }
    h1 { margin: 18px 0 17px; max-width: 680px; font-size: clamp(38px, 5vw, 66px); line-height: 1.15; letter-spacing: 0; font-weight: 800; }
    .hero h1 em { color: #f4c777; font-style: normal; }
    .hero-lead { max-width: 650px; margin: 0; color: #dbe9e9; font-size: 17px; line-height: 1.9; }
    .hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
    .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 21px; border: 1px solid transparent; border-radius: 10px;
      font-weight: 700; font-size: 14px; transition: .2s ease;
    }
    .button-primary { background: var(--coral); color: #fff; box-shadow: 0 10px 24px rgba(216,93,77,.25); }
    .button-primary:hover { background: #bd4c3f; transform: translateY(-2px); }
    .button-light { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.32); }
    .button-light:hover { background: rgba(255,255,255,.18); }
    .hero-stats { display: flex; gap: 34px; margin-top: 48px; flex-wrap: wrap; }
    .hero-stat strong { display: block; font-size: 25px; color: #fff; }
    .hero-stat span { display: block; color: #b7cecf; font-size: 13px; }
    .section { padding: 88px 0; }
    .section-soft { background: var(--soft); }
    .section-dark { color: #fff; background: #173c43; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 34px; }
    .section-kicker { margin: 0 0 7px; color: var(--teal); font-weight: 800; font-size: 13px; letter-spacing: 1px; }
    h2 { margin: 0; font-size: clamp(26px, 3vw, 38px); line-height: 1.25; }
    .section-desc { max-width: 650px; margin: 12px 0 0; color: var(--muted); font-size: 15px; }
    .section-dark .section-desc { color: #bbcecf; }
    .text-link { color: var(--teal); font-weight: 700; font-size: 14px; white-space: nowrap; }
    .text-link:hover { color: var(--coral); }
    .category-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
    .category {
      min-height: 160px; padding: 23px 20px; border: 1px solid var(--line); border-radius: var(--radius);
      background: #fff; transition: .22s ease;
    }
    .category:hover { border-color: #add7d5; transform: translateY(-4px); box-shadow: var(--shadow); }
    .category-icon { display: grid; place-items: center; width: 39px; height: 39px; margin-bottom: 22px; border-radius: 11px; color: var(--teal); background: #e8f6f4; font-weight: 800; }
    .category h3 { margin: 0 0 8px; font-size: 17px; }
    .category p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
    .content-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .media-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: .22s ease; }
    .media-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
    .media-image { position: relative; aspect-ratio: 1.48 / 1; overflow: hidden; background: #dbe6e6; }
    .media-image img { height: 100%; transition: .35s ease; }
    .media-card:hover .media-image img { transform: scale(1.04); }
    .badge { position: absolute; top: 12px; left: 12px; padding: 3px 8px; border-radius: 6px; color: #fff; background: var(--teal); font-size: 11px; font-weight: 800; }
    .badge.coral { background: var(--coral); }
    .media-body { padding: 17px 17px 18px; }
    .media-body h3 { margin: 0 0 9px; font-size: 16px; line-height: 1.4; }
    .meta { display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 12px; }
    .rating { color: var(--gold); font-weight: 800; }
    .feature-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 46px; align-items: center; }
    .feature-visual { position: relative; min-height: 370px; border-radius: 22px; overflow: hidden; background: #295c60; }
    .feature-visual img { height: 100%; min-height: 370px; }
    .feature-overlay { position: absolute; inset: auto 20px 20px 20px; padding: 19px; border: 1px solid rgba(255,255,255,.3); border-radius: 14px; color: #fff; background: rgba(8,44,50,.78); backdrop-filter: blur(12px); }
    .feature-overlay strong { display: block; margin-bottom: 4px; font-size: 17px; }
    .feature-overlay span { color: #c9dfdf; font-size: 13px; }
    .feature-copy h2 { margin-bottom: 16px; }
    .feature-copy > p { margin: 0 0 24px; color: var(--muted); font-size: 15px; }
    .check-list { display: grid; gap: 15px; margin: 0; padding: 0; list-style: none; }
    .check-list li { display: flex; gap: 12px; color: var(--ink); font-size: 14px; }
    .check-list li::before { content: "✓"; flex: 0 0 22px; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; color: #fff; background: var(--teal); font-size: 12px; font-weight: 800; }
    .rank-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .rank-list { padding: 0; margin: 0; list-style: none; }
    .rank-item { display: grid; grid-template-columns: 38px 1fr auto auto; align-items: center; gap: 14px; padding: 15px 0; border-bottom: 1px solid var(--line); }
    .rank-item:last-child { border-bottom: 0; }
    .rank-no { color: var(--coral); font-size: 20px; font-weight: 800; }
    .rank-title { font-weight: 700; font-size: 14px; }
    .rank-tag { padding: 3px 7px; border-radius: 5px; color: var(--teal-dark); background: #e9f4f3; font-size: 11px; }
    .rank-score { color: var(--gold); font-weight: 800; font-size: 13px; }
    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .news-card { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 14px; border: 1px solid var(--line); border-radius: 14px; background: #fff; transition: .2s ease; }
    .news-card:hover { border-color: #abd6d3; box-shadow: var(--shadow); }
    .news-card img { height: 94px; border-radius: 10px; }
    .news-card h3 { margin: 4px 0 8px; font-size: 14px; line-height: 1.5; }
    .news-date { color: var(--muted); font-size: 12px; }
    .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .quote { padding: 25px; border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); background: rgba(255,255,255,.07); }
    .quote-mark { color: #f4c777; font-size: 34px; line-height: 1; }
    .quote p { margin: 12px 0 18px; color: #d3e2e2; font-size: 14px; line-height: 1.8; }
    .quote cite { color: #fff; font-size: 13px; font-style: normal; font-weight: 700; }
    .notice-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .notice { padding: 22px; border-top: 3px solid var(--teal); background: #fff; box-shadow: 0 8px 24px rgba(30,54,62,.05); }
    .notice strong { display: block; margin-bottom: 7px; font-size: 15px; }
    .notice span { color: var(--muted); font-size: 13px; line-height: 1.65; }
    .faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 10px; }
    details { border-bottom: 1px solid var(--line); }
    summary { padding: 18px 0; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; float: right; color: var(--teal); font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 800px; margin: -5px 0 18px; color: var(--muted); font-size: 14px; }
    .closing { padding: 56px 0; color: #fff; background: var(--coral); }
    .closing-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .closing h2 { max-width: 690px; font-size: clamp(25px, 3vw, 35px); }
    .closing p { margin: 10px 0 0; color: #ffe5df; font-size: 14px; }
    .closing .button-light { border-color: rgba(255,255,255,.55); }
    .site-footer { padding: 54px 0 25px; color: #bac8ca; background: #102c32; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 38px; border-bottom: 1px solid rgba(255,255,255,.12); }
    .footer-brand { color: #fff; }
    .footer-brand p { max-width: 290px; margin: 16px 0 0; color: #9db3b6; font-size: 13px; line-height: 1.8; }
    .footer-title { margin: 0 0 14px; color: #fff; font-size: 14px; }
    .footer-links { display: grid; gap: 8px; }
    .footer-links a { color: #a9bdc0; font-size: 13px; transition: .2s; }
    .footer-links a:hover { color: #fff; }
    .footer-note { padding-top: 21px; color: #8fa8ab; font-size: 12px; }
    :focus-visible { outline: 3px solid rgba(244,199,119,.8); outline-offset: 3px; }
    @media (max-width: 1024px) {
      .category-grid { grid-template-columns: repeat(3, 1fr); }
      .content-grid { grid-template-columns: repeat(3, 1fr); }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .notice-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 34px)); }
      .nav-wrap { height: 68px; }
      .menu-button { display: block; margin-left: auto; }
      .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 12px 17px 18px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 15px 25px rgba(20,50,58,.08); }
      .nav.open { display: grid; }
      .nav a { padding: 12px 10px; }
      .nav-cta { text-align: center; }
      .hero { min-height: 620px; }
      .hero-inner { padding: 74px 0 60px; }
      .hero-lead { font-size: 15px; }
      .feature-layout { grid-template-columns: 1fr; gap: 28px; }
      .rank-layout { grid-template-columns: 1fr; }
      .closing-inner { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 520px) {
      .section { padding: 64px 0; }
      .section-head { display: block; margin-bottom: 25px; }
      .section-head .text-link { display: inline-block; margin-top: 15px; }
      .hero h1 { font-size: 40px; }
      .hero-actions .button { width: 100%; }
      .hero-stats { gap: 18px 25px; margin-top: 34px; }
      .category-grid, .content-grid, .news-grid, .notice-grid, .quote-grid { grid-template-columns: 1fr; }
      .content-grid { gap: 15px; }
      .news-card { grid-template-columns: 100px 1fr; }
      .news-card img { height: 82px; }
      .rank-item { grid-template-columns: 30px 1fr auto; gap: 9px; }
      .rank-tag { display: none; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
      .footer-grid > :first-child { grid-column: 1 / -1; }
    }