/* roulang page: index */
:root {
      --paper: #f4f7fb;
      --white: #fff;
      --ink: #182336;
      --muted: #667487;
      --soft: #8b97a7;
      --line: #e3e9f0;
      --ocean: #1769aa;
      --ocean-dark: #105487;
      --coral: #e76d55;
      --mint: #248c7d;
      --pale-blue: #eaf3fb;
      --shadow: 0 16px 42px rgba(31, 56, 82, .08);
      --shadow-sm: 0 8px 24px rgba(31, 56, 82, .06);
      --radius: 10px;
      --radius-lg: 16px;
      --container: 1180px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 3px solid rgba(23, 105, 170, .3);
      outline-offset: 3px;
    }
    .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
    .site-header {
      position: sticky; top: 0; z-index: 50;
      background: rgba(255,255,255,.94);
      border-bottom: 1px solid rgba(220,228,237,.9);
      backdrop-filter: blur(16px);
    }
    .nav-shell { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 800; white-space: nowrap; letter-spacing: 0; }
    .brand-mark {
      width: 34px; height: 34px; display: grid; place-items: center;
      color: white; background: var(--ocean); border-radius: 9px;
      box-shadow: 0 5px 12px rgba(23,105,170,.23);
    }
    .brand-mark svg { width: 19px; height: 19px; }
    .nav-links { display: flex; align-items: center; gap: 8px; }
    .nav-link {
      display: inline-flex; align-items: center; gap: 7px; padding: 9px 13px;
      color: #536174; border-radius: 7px; font-size: 14px; font-weight: 600;
      transition: color .18s ease, background .18s ease;
    }
    .nav-link:hover, .nav-link[aria-current="page"] { color: var(--ocean); background: #edf5fb; }
    .nav-link svg { width: 15px; height: 15px; }
    .nav-tools { display: flex; align-items: center; gap: 12px; }
    .search-form {
      display: flex; align-items: center; gap: 8px; height: 40px;
      padding: 0 11px; border: 1px solid var(--line); border-radius: 7px; background: #fff;
      transition: border-color .18s ease, box-shadow .18s ease;
    }
    .search-form:focus-within { border-color: #8db9d8; box-shadow: 0 0 0 3px rgba(23,105,170,.1); }
    .search-form svg { width: 16px; height: 16px; flex: none; color: #8290a1; }
    .search-form input { width: 126px; padding: 0; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: 13px; }
    .search-form input::placeholder { color: #9aa5b2; }
    .nav-cta, .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 42px; padding: 0 17px; border: 1px solid transparent;
      border-radius: 7px; font-size: 14px; font-weight: 700;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    }
    .nav-cta, .button-primary { color: #fff; background: var(--ocean); box-shadow: 0 5px 14px rgba(23,105,170,.18); }
    .nav-cta:hover, .button-primary:hover { background: var(--ocean-dark); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(23,105,170,.23); }
    .button-secondary { color: var(--ink); background: #fff; border-color: var(--line); }
    .button-secondary:hover { border-color: #a8c4d9; background: #f8fbfd; transform: translateY(-1px); }
    .button svg, .nav-cta svg { width: 16px; height: 16px; }
    .menu-toggle { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 7px; color: var(--ink); background: white; cursor: pointer; }
    .menu-toggle svg { width: 20px; height: 20px; }
    main { overflow: clip; }
    .hero {
      position: relative; min-height: 580px; display: flex; align-items: center; isolation: isolate;
      color: #fff; background: #26384a;
    }
    .hero::before {
      position: absolute; z-index: -2; inset: 0; content: "";
      background-image: linear-gradient(90deg, rgba(12,26,42,.86) 0%, rgba(12,26,42,.7) 44%, rgba(12,26,42,.24) 100%), url("https://images.unsplash.com/photo-1485846234645-a62644f84728?auto=format&fit=crop&w=2000&q=88");
      background-position: center 48%; background-size: cover;
    }
    .hero::after { position: absolute; z-index: -1; inset: auto 0 0; height: 120px; content: ""; background: linear-gradient(transparent, rgba(14,28,44,.28)); }
    .hero-content { padding-block: 84px 90px; max-width: 780px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px; color: #d6e7f3; font-size: 12px; font-weight: 700; letter-spacing: 0; }
    .eyebrow::before { width: 22px; height: 2px; content: ""; background: #ef9c77; }
    h1 { margin: 0; max-width: 760px; font-size: clamp(38px, 4.5vw, 60px); line-height: 1.18; letter-spacing: 0; font-weight: 800; }
    .hero-copy { max-width: 720px; margin: 22px 0 27px; color: rgba(255,255,255,.84); font-size: 16px; line-height: 1.95; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
    .hero .button-secondary { border-color: rgba(255,255,255,.45); color: #fff; background: rgba(255,255,255,.1); }
    .hero .button-secondary:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.7); }
    .hero-meta { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 32px; color: rgba(255,255,255,.78); font-size: 13px; }
    .hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
    .hero-meta svg { width: 16px; height: 16px; color: #9ed7cc; }
    .quick-topics { position: relative; z-index: 2; margin-top: -35px; }
    .topic-strip { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid rgba(225,232,239,.9); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
    .topic-item { min-height: 94px; display: flex; align-items: center; gap: 13px; padding: 18px 22px; border-right: 1px solid var(--line); transition: background .18s ease; }
    .topic-item:last-child { border-right: 0; }
    .topic-item:hover { background: #f7fbfe; }
    .topic-icon { width: 42px; height: 42px; flex: none; display: grid; place-items: center; border-radius: 9px; color: var(--ocean); background: #eaf3fb; }
    .topic-item:nth-child(2) .topic-icon { color: var(--coral); background: #fff0eb; }
    .topic-item:nth-child(3) .topic-icon { color: var(--mint); background: #eaf7f3; }
    .topic-item:nth-child(4) .topic-icon { color: #8775b7; background: #f2eff9; }
    .topic-icon svg { width: 20px; height: 20px; }
    .topic-item strong { display: block; font-size: 14px; }
    .topic-item small { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }
    .section { padding: 78px 0; }
    .section-tight { padding: 60px 0; }
    .section-white { background: #fff; }
    .section-tint { background: #edf3f8; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 26px; margin-bottom: 30px; }
    .section-kicker { margin-bottom: 8px; color: var(--ocean); font-size: 12px; font-weight: 800; }
    .section-title { margin: 0; font-size: 29px; line-height: 1.35; letter-spacing: 0; font-weight: 800; }
    .section-desc { max-width: 650px; margin: 10px 0 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
    .text-link { display: inline-flex; align-items: center; gap: 7px; flex: none; color: var(--ocean); font-size: 13px; font-weight: 700; }
    .text-link:hover { color: var(--ocean-dark); }
    .text-link svg { width: 15px; height: 15px; transition: transform .18s ease; }
    .text-link:hover svg { transform: translateX(3px); }
    .feature-grid { display: grid; grid-template-columns: 1.22fr .78fr; gap: 20px; }
    .feature-card {
      position: relative; min-height: 330px; overflow: hidden; display: flex; align-items: end;
      border-radius: var(--radius-lg); color: #fff; background: #33465a; box-shadow: var(--shadow-sm);
    }
    .feature-card::before { position: absolute; inset: 0; content: ""; background: linear-gradient(0deg, rgba(13,26,40,.88), rgba(13,26,40,.03) 78%); transition: opacity .25s ease; }
    .feature-card:hover::before { opacity: .86; }
    .feature-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
    .feature-card:hover img { transform: scale(1.035); }
    .feature-card-content { position: relative; z-index: 1; padding: 27px; }
    .feature-card h3 { margin: 11px 0 7px; font-size: 24px; line-height: 1.4; }
    .feature-card p { max-width: 540px; margin: 0; color: rgba(255,255,255,.82); font-size: 13px; line-height: 1.8; }
    .feature-side { display: grid; gap: 20px; }
    .feature-side .feature-card { min-height: 155px; }
    .feature-side .feature-card-content { padding: 20px; }
    .feature-side .feature-card h3 { font-size: 19px; }
    .feature-side .feature-card p { font-size: 12px; }
    .tag { display: inline-flex; align-items: center; min-height: 24px; padding: 2px 9px; border: 1px solid rgba(255,255,255,.38); border-radius: 4px; color: #fff; background: rgba(14,35,54,.22); font-size: 11px; font-weight: 700; }
    .editorial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .editorial-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: white; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
    .editorial-card:hover { transform: translateY(-3px); border-color: #c8d8e5; box-shadow: var(--shadow-sm); }
    .editorial-card img { width: 100%; height: 184px; object-fit: cover; background: #dce5ec; }
    .editorial-body { padding: 19px; }
    .card-meta { display: flex; align-items: center; gap: 9px; color: var(--soft); font-size: 11px; }
    .card-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: #a7b4c1; }
    .editorial-body h3 { margin: 9px 0 8px; font-size: 17px; line-height: 1.5; }
    .editorial-body p { min-height: 50px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
    .editorial-body .text-link { margin-top: 13px; font-size: 12px; }
    .rhythm-band { background: #182c3f; color: white; }
    .rhythm-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 54px; align-items: center; }
    .rhythm-copy .section-kicker { color: #90c9bd; }
    .rhythm-copy .section-title { color: white; }
    .rhythm-copy .section-desc { color: rgba(255,255,255,.7); }
    .rhythm-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .rhythm-card { min-height: 126px; padding: 19px; border: 1px solid rgba(255,255,255,.14); border-radius: 8px; background: rgba(255,255,255,.06); transition: border-color .18s ease, background .18s ease; }
    .rhythm-card:hover { border-color: rgba(144,201,189,.55); background: rgba(255,255,255,.1); }
    .rhythm-card .time { display: inline-block; margin-bottom: 8px; color: #9ed7cc; font-size: 11px; font-weight: 700; }
    .rhythm-card h3 { margin: 0 0 5px; color: #fff; font-size: 15px; }
    .rhythm-card p { margin: 0; color: rgba(255,255,255,.67); font-size: 12px; line-height: 1.7; }
    .matrix { display: grid; grid-template-columns: 1.15fr .85fr .85fr; gap: 16px; }
    .matrix-tile { position: relative; min-height: 210px; overflow: hidden; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: white; transition: transform .2s ease, box-shadow .2s ease; }
    .matrix-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); }
    .matrix-tile.large { grid-row: span 2; min-height: 436px; color: white; border-color: transparent; background: #344557; }
    .matrix-tile.large::after { position: absolute; inset: 0; content: ""; background: linear-gradient(0deg, rgba(16,31,46,.84), rgba(16,31,46,.02) 72%), url("https://images.unsplash.com/photo-1518837695005-2083093ee35b?auto=format&fit=crop&w=1000&q=85") center/cover; }
    .matrix-tile.large > * { position: relative; z-index: 1; }
    .matrix-tile.large .matrix-tile-bottom { position: absolute; right: 22px; bottom: 22px; left: 22px; }
    .matrix-label { display: inline-block; color: var(--ocean); font-size: 11px; font-weight: 800; }
    .matrix-tile.large .matrix-label { color: #b9e4dc; }
    .matrix-tile h3 { margin: 8px 0 7px; font-size: 20px; line-height: 1.45; }
    .matrix-tile p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
    .matrix-tile.large p { max-width: 410px; color: rgba(255,255,255,.78); font-size: 13px; }
    .matrix-foot { margin-top: 18px; color: #8b97a7; font-size: 11px; }
    .quote-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
    .quote-score { display: flex; align-items: baseline; gap: 9px; margin: 22px 0 9px; }
    .quote-score strong { color: var(--ocean); font-size: 46px; line-height: 1; }
    .quote-score span { color: var(--muted); font-size: 13px; }
    .quote-stars { color: #e69b43; font-size: 15px; letter-spacing: 0; }
    .quote-list { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .quote-card { padding: 19px; border: 1px solid var(--line); border-radius: 8px; background: white; }
    .quote-card p { margin: 0 0 15px; color: #4d5c6e; font-size: 13px; line-height: 1.85; }
    .quote-person { display: flex; align-items: center; gap: 10px; color: var(--ink); font-size: 12px; font-weight: 700; }
    .avatar { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 50%; color: var(--ocean); background: #e6f0f7; font-size: 12px; }
    .quote-card:nth-child(2) .avatar { color: #b25d48; background: #fff0eb; }
    .quote-card:nth-child(3) .avatar { color: #237b70; background: #e8f5f1; }
    .quote-card:nth-child(4) .avatar { color: #7360a1; background: #f0edf8; }
    .quote-person small { margin-left: auto; color: #8b97a7; font-size: 11px; font-weight: 500; }
    .timeline { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #d9e3ec; }
    .timeline-item { position: relative; padding: 26px 21px 0 0; }
    .timeline-item::before { position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border: 2px solid white; border-radius: 50%; content: ""; background: var(--ocean); box-shadow: 0 0 0 1px var(--ocean); }
    .timeline-item .year { color: var(--ocean); font-size: 12px; font-weight: 800; }
    .timeline-item h3 { margin: 8px 0 6px; font-size: 15px; }
    .timeline-item p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
    .reading-list { border-top: 1px solid var(--line); }
    .reading-row { display: grid; grid-template-columns: 100px minmax(0,1fr) 110px 18px; align-items: center; gap: 18px; min-height: 76px; border-bottom: 1px solid var(--line); transition: padding .18s ease, background .18s ease; }
    .reading-row:hover { padding-inline: 10px; background: #f8fafc; }
    .reading-category { width: fit-content; padding: 3px 8px; border-radius: 4px; color: var(--ocean); background: #eaf3fb; font-size: 11px; font-weight: 700; }
    .reading-row:nth-child(2) .reading-category { color: #b15a46; background: #fff0eb; }
    .reading-row:nth-child(3) .reading-category { color: #267b70; background: #e8f5f1; }
    .reading-row:nth-child(4) .reading-category { color: #7360a1; background: #f0edf8; }
    .reading-row h3 { margin: 0; font-size: 14px; font-weight: 700; }
    .reading-row time { color: #8b97a7; font-size: 11px; text-align: right; }
    .reading-row svg { width: 16px; height: 16px; color: #9aa6b2; }
    .voices-band { background: #eaf2f7; }
    .voices-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 42px; align-items: center; }
    .voice-quote { padding-left: 22px; border-left: 3px solid var(--coral); }
    .voice-quote p { margin: 0 0 12px; color: #33485b; font-size: 18px; line-height: 1.8; font-weight: 600; }
    .voice-quote span { color: var(--muted); font-size: 12px; }
    .voice-topics { display: flex; flex-wrap: wrap; gap: 9px; }
    .voice-chip { padding: 7px 12px; border: 1px solid #d2dfe8; border-radius: 5px; color: #536477; background: rgba(255,255,255,.7); font-size: 12px; }
    .image-row { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
    .image-story { position: relative; min-height: 286px; overflow: hidden; border-radius: var(--radius); color: white; background: #415568; }
    .image-story img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
    .image-story:hover img { transform: scale(1.035); }
    .image-story::after { position: absolute; inset: 0; content: ""; background: linear-gradient(0deg, rgba(16,29,42,.85), rgba(16,29,42,.03) 82%); }
    .image-story-content { position: absolute; z-index: 1; right: 22px; bottom: 20px; left: 22px; }
    .image-story h3 { margin: 7px 0 4px; font-size: 19px; }
    .image-story p { margin: 0; color: rgba(255,255,255,.76); font-size: 12px; }
    .side-stories { display: grid; gap: 14px; }
    .side-story { display: grid; grid-template-columns: 100px 1fr; min-height: 135px; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: white; }
    .side-story img { width: 100%; height: 100%; object-fit: cover; }
    .side-story div { align-self: center; padding: 14px; }
    .side-story span { color: var(--mint); font-size: 10px; font-weight: 800; }
    .side-story h3 { margin: 5px 0; font-size: 14px; line-height: 1.5; }
    .side-story p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
    .closing { padding: 58px 0; color: white; background: #1d557d; }
    .closing-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
    .closing h2 { margin: 0; font-size: 25px; }
    .closing p { max-width: 680px; margin: 8px 0 0; color: rgba(255,255,255,.75); font-size: 13px; }
    .closing .button { flex: none; color: var(--ink); background: #fff; }
    .closing .button:hover { background: #edf5fb; }
    .site-footer { padding: 54px 0 22px; color: #d5dee7; background: #152536; }
    .footer-top { display: grid; grid-template-columns: 1.4fr .7fr .8fr 1fr; gap: 38px; padding-bottom: 40px; }
    .footer-brand { color: white; }
    .footer-intro { max-width: 310px; margin: 15px 0 0; color: #aab7c4; font-size: 12px; line-height: 1.9; }
    .footer-column h3 { margin: 4px 0 14px; color: #fff; font-size: 13px; }
    .footer-column a { display: block; width: fit-content; margin: 8px 0; color: #aab7c4; font-size: 12px; transition: color .18s ease; }
    .footer-column a:hover { color: white; }
    .footer-note { padding: 15px 0; border-top: 1px solid rgba(255,255,255,.12); color: #93a2b1; font-size: 11px; }
    .footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 15px; border-top: 1px solid rgba(255,255,255,.12); color: #8999a9; font-size: 11px; }
    .footer-bottom a { color: #c5d3df; }
    @media (max-width: 1024px) {
      .container { width: min(var(--container), calc(100% - 40px)); }
      .nav-shell { gap: 14px; }
      .search-form input { width: 95px; }
      .nav-link { padding-inline: 9px; }
      .feature-grid { grid-template-columns: 1.1fr .9fr; }
      .rhythm-layout { gap: 32px; }
      .footer-top { gap: 25px; }
    }
    @media (max-width: 768px) {
      .container { width: calc(100% - 36px); }
      .nav-shell { min-height: 66px; }
      .menu-toggle { display: inline-flex; order: 3; }
      .nav-tools { margin-left: auto; }
      .nav-tools .search-form { display: none; }
      .nav-cta { min-height: 39px; padding-inline: 12px; font-size: 12px; }
      .nav-links {
        position: absolute; top: 65px; right: 0; left: 0; display: none;
        padding: 10px 18px 16px; border-bottom: 1px solid var(--line); background: white;
        box-shadow: 0 12px 20px rgba(31,56,82,.08);
      }
      .nav-links.is-open { display: grid; }
      .nav-link { min-height: 42px; }
      .hero { min-height: 535px; }
      .hero::before { background-position: 58% center; }
      .hero-content { padding-block: 70px 82px; }
      .hero-copy { font-size: 14px; }
      .quick-topics { margin-top: -25px; }
      .topic-strip { grid-template-columns: repeat(2,1fr); }
      .topic-item { min-height: 82px; padding: 14px; }
      .topic-item:nth-child(2) { border-right: 0; }
      .topic-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .section { padding: 60px 0; }
      .section-tight { padding: 48px 0; }
      .section-title { font-size: 25px; }
      .feature-grid { grid-template-columns: 1fr; }
      .feature-card { min-height: 300px; }
      .feature-side { grid-template-columns: 1fr 1fr; }
      .feature-side .feature-card { min-height: 175px; }
      .editorial-grid { grid-template-columns: repeat(2,1fr); }
      .editorial-card:last-child { display: none; }
      .rhythm-layout, .quote-layout, .voices-layout { grid-template-columns: 1fr; gap: 25px; }
      .matrix { grid-template-columns: repeat(2,1fr); }
      .matrix-tile.large { grid-row: auto; grid-column: 1 / -1; min-height: 300px; }
      .timeline { grid-template-columns: repeat(2,1fr); row-gap: 22px; }
      .timeline-item:nth-child(3), .timeline-item:nth-child(4) { border-top: 1px solid #d9e3ec; }
      .timeline-item:nth-child(3)::before, .timeline-item:nth-child(4)::before { top: -5px; }
      .image-row { grid-template-columns: 1fr; }
      .image-story { min-height: 270px; }
      .side-stories { grid-template-columns: 1fr 1fr; }
      .side-story { grid-template-columns: 90px 1fr; }
      .closing-inner { align-items: flex-start; flex-direction: column; }
      .footer-top { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      body { font-size: 14px; }
      .container { width: calc(100% - 30px); }
      .brand { gap: 8px; font-size: 16px; }
      .brand-mark { width: 31px; height: 31px; }
      .nav-tools { display: none; }
      .nav-shell { justify-content: space-between; }
      .hero { min-height: 560px; }
      .hero::before { background-position: 61% center; }
      .hero-content { padding-block: 64px 72px; }
      h1 { font-size: 38px; }
      .hero-copy { margin-block: 17px 21px; font-size: 13px; line-height: 1.85; }
      .hero-meta { gap: 12px 17px; margin-top: 23px; font-size: 11px; }
      .hero-actions .button { min-height: 40px; padding-inline: 12px; font-size: 12px; }
      .topic-item { gap: 9px; padding: 12px 9px; }
      .topic-icon { width: 35px; height: 35px; }
      .topic-item strong { font-size: 12px; }
      .topic-item small { font-size: 10px; }
      .section-head { align-items: flex-start; flex-direction: column; gap: 11px; margin-bottom: 23px; }
      .section-title { font-size: 23px; }
      .section-desc { font-size: 13px; }
      .feature-card { min-height: 270px; }
      .feature-card-content { padding: 20px; }
      .feature-card h3 { font-size: 20px; }
      .feature-side { grid-template-columns: 1fr; }
      .feature-side .feature-card { min-height: 165px; }
      .editorial-grid { grid-template-columns: 1fr; }
      .editorial-card:last-child { display: block; }
      .editorial-card img { height: 190px; }
      .rhythm-list { grid-template-columns: 1fr; }
      .rhythm-card { min-height: auto; }
      .matrix { grid-template-columns: 1fr; }
      .matrix-tile.large { grid-column: auto; min-height: 300px; }
      .matrix-tile { min-height: 170px; }
      .quote-list { grid-template-columns: 1fr; }
      .quote-score strong { font-size: 40px; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline-item { padding-right: 10px; }
      .reading-row { grid-template-columns: 72px minmax(0,1fr) 15px; gap: 9px; min-height: 72px; }
      .reading-row h3 { font-size: 12px; line-height: 1.55; }
      .reading-row time { display: none; }
      .reading-category { padding-inline: 6px; font-size: 10px; }
      .voice-quote p { font-size: 16px; }
      .side-stories { grid-template-columns: 1fr; }
      .side-story { min-height: 112px; }
      .closing { padding: 43px 0; }
      .closing h2 { font-size: 21px; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 26px 18px; }
      .footer-top > :first-child { grid-column: 1 / -1; }
      .footer-bottom { align-items: flex-start; flex-direction: column; gap: 8px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
    }

/* roulang page: category1 */
:root {
      --paper: #f4f7fb;
      --white: #fff;
      --ink: #182336;
      --muted: #667487;
      --soft: #8b97a7;
      --line: #e3e9f0;
      --ocean: #1769aa;
      --ocean-dark: #105487;
      --coral: #e76d55;
      --mint: #248c7d;
      --pale-blue: #eaf3fb;
      --shadow: 0 16px 42px rgba(31, 56, 82, .08);
      --shadow-sm: 0 8px 24px rgba(31, 56, 82, .06);
      --radius: 10px;
      --radius-lg: 16px;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 3px solid rgba(23, 105, 170, .3);
      outline-offset: 3px;
    }
    .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
    .site-header {
      position: sticky; top: 0; z-index: 50;
      background: rgba(255,255,255,.94);
      border-bottom: 1px solid rgba(220,228,237,.9);
      backdrop-filter: blur(16px);
    }
    .nav-shell { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 800; white-space: nowrap; letter-spacing: 0; }
    .brand-mark {
      width: 34px; height: 34px; display: grid; place-items: center;
      color: white; background: var(--ocean); border-radius: 9px;
      box-shadow: 0 5px 12px rgba(23,105,170,.23);
    }
    .brand-mark svg { width: 19px; height: 19px; }
    .nav-links { display: flex; align-items: center; gap: 8px; }
    .nav-link {
      display: inline-flex; align-items: center; gap: 7px; padding: 9px 13px;
      color: #536174; border-radius: 7px; font-size: 14px; font-weight: 600;
      transition: color .18s ease, background .18s ease;
    }
    .nav-link:hover, .nav-link[aria-current="page"] { color: var(--ocean); background: #edf5fb; }
    .nav-link svg { width: 15px; height: 15px; }
    .menu-toggle {
      display: none; width: 42px; height: 42px; align-items: center; justify-content: center;
      border: 1px solid var(--line); border-radius: 7px; color: var(--ink); background: white; cursor: pointer;
    }
    .menu-toggle svg { width: 20px; height: 20px; }
    main { overflow: clip; }
    .section { padding: 78px 0; }
    .section-tight { padding: 58px 0; }
    .section-white { background: #fff; }
    .section-tint { background: #edf3f8; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 9px;
      color: var(--ocean); font-size: 12px; font-weight: 800;
    }
    .eyebrow::before { width: 22px; height: 2px; content: ""; background: var(--coral); }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.3; }
    .page-hero {
      position: relative; isolation: isolate; min-height: 430px;
      display: flex; align-items: center; overflow: hidden;
      color: #fff; background: #1e496b;
    }
    .page-hero::before {
      position: absolute; z-index: -2; inset: 0; content: "";
      background:
        linear-gradient(90deg, rgba(16,42,65,.93) 0%, rgba(20,58,86,.78) 48%, rgba(28,81,111,.38) 100%),
        url("https://images.unsplash.com/photo-1485846234645-a62644f84728?auto=format&fit=crop&w=2000&q=88") center 48% / cover;
    }
    .page-hero::after {
      position: absolute; z-index: -1; content: ""; width: 48%; height: 145%;
      right: -7%; top: -22%; transform: skewX(-17deg);
      background: rgba(23,105,170,.52); border-left: 1px solid rgba(255,255,255,.2);
    }
    .hero-content { width: min(760px, 100%); padding: 72px 0 80px; }
    .page-hero .eyebrow { color: #d7eaf6; }
    .page-hero h1 { max-width: 690px; margin: 14px 0 18px; font-size: clamp(34px, 5vw, 58px); font-weight: 800; }
    .hero-copy { max-width: 700px; margin-bottom: 26px; color: rgba(255,255,255,.84); font-size: 16px; line-height: 1.95; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
    .button {
      display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 9px;
      padding: 0 18px; border: 1px solid transparent; border-radius: 7px;
      font-size: 14px; font-weight: 700;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
    }
    .button-primary { color: #fff; background: var(--ocean); box-shadow: 0 5px 14px rgba(23,105,170,.18); }
    .button-primary:hover { background: var(--ocean-dark); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(23,105,170,.23); }
    .button-secondary { color: var(--ink); background: #fff; border-color: var(--line); }
    .button-secondary:hover { border-color: #a8c4d9; background: #f8fbfd; transform: translateY(-1px); }
    .page-hero .button-secondary { color: #fff; background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.42); }
    .page-hero .button-secondary:hover { background: rgba(255,255,255,.19); border-color: rgba(255,255,255,.7); }
    .button svg { width: 17px; height: 17px; }
    .hero-meta { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; color: rgba(255,255,255,.8); font-size: 13px; }
    .hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
    .hero-meta svg { width: 16px; height: 16px; color: #9ed7cc; }
    .intro-band { background: #fff; border-bottom: 1px solid var(--line); }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 54px; align-items: center; }
    .intro-grid h2 { margin: 10px 0 14px; font-size: 29px; }
    .intro-grid p { margin-bottom: 0; color: var(--muted); }
    .intro-note {
      padding: 24px 26px; border-left: 3px solid var(--coral);
      color: #40516a; background: #f6f9fc; font-size: 15px;
    }
    .section-heading { max-width: 740px; margin-bottom: 34px; }
    .section-heading h2 { margin: 10px 0 11px; font-size: 32px; }
    .section-heading p { margin-bottom: 0; color: var(--muted); }
    .topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; box-shadow: var(--shadow-sm); }
    .topic-item {
      min-height: 110px; display: flex; align-items: center; gap: 14px; padding: 20px;
      border-right: 1px solid var(--line); transition: background .18s ease;
    }
    .topic-item:last-child { border-right: 0; }
    .topic-item:hover { background: #f7fbfe; }
    .topic-icon {
      width: 42px; height: 42px; flex: none; display: grid; place-items: center;
      border-radius: 9px; color: var(--ocean); background: var(--pale-blue);
    }
    .topic-icon svg { width: 21px; height: 21px; }
    .topic-item:nth-child(2) .topic-icon { color: var(--coral); background: #fff0eb; }
    .topic-item:nth-child(3) .topic-icon { color: var(--mint); background: #eaf7f3; }
    .topic-item:nth-child(4) .topic-icon { color: #8775b7; background: #f2eff9; }
    .topic-item strong { display: block; font-size: 14px; }
    .topic-item small { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; }
    .feature-layout { display: grid; grid-template-columns: 1.12fr .88fr; gap: 28px; align-items: stretch; }
    .feature-image {
      position: relative; min-height: 370px; overflow: hidden; border-radius: var(--radius-lg);
      background: #284a63; box-shadow: var(--shadow);
    }
    .feature-image img { width: 100%; height: 100%; min-height: 370px; object-fit: cover; }
    .image-caption {
      position: absolute; inset: auto 0 0; padding: 48px 26px 24px; color: #fff;
      background: linear-gradient(transparent, rgba(13,31,47,.84));
    }
    .image-caption span { color: #d5e7f4; font-size: 12px; font-weight: 700; }
    .image-caption h3 { margin: 6px 0 0; font-size: 23px; }
    .feature-list { display: grid; gap: 12px; }
    .feature-item {
      display: grid; grid-template-columns: 50px 1fr; gap: 15px; align-items: start;
      padding: 20px 21px; border: 1px solid var(--line); border-radius: var(--radius);
      background: #fff; transition: transform .18s ease, box-shadow .18s ease;
    }
    .feature-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
    .feature-number { color: var(--coral); font-size: 14px; font-weight: 800; }
    .feature-item h3 { margin: 0 0 5px; font-size: 16px; }
    .feature-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .matrix-wrap { display: grid; grid-template-columns: .72fr 1.28fr; gap: 52px; align-items: start; }
    .matrix-aside { position: sticky; top: 104px; }
    .matrix-aside h2 { margin: 10px 0 13px; font-size: 30px; }
    .matrix-aside p { color: var(--muted); }
    .matrix-aside .aside-rule { width: 46px; height: 3px; margin: 22px 0; background: var(--coral); }
    .matrix-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
    .matrix-entry { padding: 22px 18px 23px 0; border-bottom: 1px solid var(--line); }
    .matrix-entry:nth-child(odd) { margin-right: 22px; }
    .matrix-entry span { display: block; margin-bottom: 7px; color: var(--ocean); font-size: 12px; font-weight: 800; }
    .matrix-entry h3 { margin: 0 0 7px; font-size: 17px; }
    .matrix-entry p { margin: 0; color: var(--muted); font-size: 13px; }
    .quote-section { color: #fff; background: #203f59; }
    .quote-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: center; }
    .quote-heading .eyebrow { color: #b9d6e9; }
    .quote-heading h2 { margin: 10px 0 0; font-size: 30px; }
    .quote-copy { margin: 0; color: rgba(255,255,255,.88); font-size: 20px; line-height: 1.8; }
    .quote-source { display: block; margin-top: 16px; color: #aad7cf; font-size: 13px; }
    .article-list { border-top: 1px solid var(--line); }
    .article-row {
      display: grid; grid-template-columns: 130px 1fr auto; gap: 24px; align-items: center;
      padding: 23px 4px; border-bottom: 1px solid var(--line);
      transition: padding .18s ease, background .18s ease;
    }
    .article-row:hover { padding-inline: 12px; background: rgba(255,255,255,.72); }
    .article-date { color: var(--soft); font-size: 12px; font-weight: 700; }
    .article-row h3 { margin: 0 0 5px; font-size: 17px; }
    .article-row p { margin: 0; color: var(--muted); font-size: 13px; }
    .article-arrow { color: var(--ocean); font-size: 20px; }
    .trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-block: 1px solid var(--line); }
    .trust-item { padding: 26px 28px 26px 0; }
    .trust-item + .trust-item { padding-left: 28px; border-left: 1px solid var(--line); }
    .trust-item strong { display: block; margin-bottom: 7px; font-size: 16px; }
    .trust-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .closing-band { padding: 42px 0; color: #fff; background: var(--ocean); }
    .closing-inner { display: flex; align-items: center; justify-content: space-between; gap: 26px; }
    .closing-inner h2 { margin: 0 0 5px; font-size: 24px; }
    .closing-inner p { margin: 0; color: rgba(255,255,255,.82); font-size: 14px; }
    .closing-band .button { flex: none; color: var(--ocean-dark); background: #fff; }
    .closing-band .button:hover { background: #edf5fb; transform: translateY(-1px); }
    .site-footer { padding: 54px 0 20px; background: #fff; border-top: 1px solid var(--line); }
    .footer-top { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 38px; padding-bottom: 34px; }
    .footer-brand { margin-bottom: 14px; }
    .footer-intro { max-width: 330px; margin: 0; color: var(--muted); font-size: 13px; }
    .footer-column h3 { margin: 3px 0 13px; font-size: 14px; }
    .footer-column a { display: block; width: fit-content; margin: 8px 0; color: var(--muted); font-size: 13px; transition: color .18s ease; }
    .footer-column a:hover { color: var(--ocean); }
    .footer-note { padding: 17px 0; border-top: 1px solid var(--line); color: var(--soft); font-size: 12px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--soft); font-size: 12px; }
    .footer-bottom a { transition: color .18s ease; }
    .footer-bottom a:hover { color: var(--ocean); }
    @media (max-width: 1024px) {
      .topic-grid { grid-template-columns: repeat(2, 1fr); }
      .topic-item:nth-child(2) { border-right: 0; }
      .topic-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .intro-grid { gap: 30px; }
      .matrix-wrap { gap: 34px; }
      .footer-top { grid-template-columns: 1.4fr 1fr 1fr; }
      .footer-top > :last-child { display: none; }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 36px)); }
      .nav-shell { min-height: 68px; gap: 12px; }
      .menu-toggle { display: inline-flex; }
      .nav-links {
        display: none; position: absolute; top: 68px; left: 0; right: 0;
        padding: 10px 18px 15px; flex-direction: column; align-items: stretch; gap: 3px;
        background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-sm);
      }
      .nav-links.is-open { display: flex; }
      .nav-link { justify-content: space-between; padding: 12px 13px; }
      .page-hero { min-height: 400px; }
      .hero-content { padding-block: 62px; }
      .intro-grid, .feature-layout, .matrix-wrap, .quote-layout { grid-template-columns: 1fr; }
      .intro-grid { gap: 20px; }
      .matrix-aside { position: static; }
      .feature-image, .feature-image img { min-height: 300px; }
      .quote-layout { gap: 20px; }
      .section { padding: 62px 0; }
      .section-tight { padding: 48px 0; }
      .footer-top { grid-template-columns: 1.4fr 1fr; gap: 28px; }
      .footer-top > :last-child { display: block; }
      .trust-grid { grid-template-columns: 1fr; }
      .trust-item, .trust-item + .trust-item { padding: 19px 0; border-left: 0; }
      .trust-item + .trust-item { border-top: 1px solid var(--line); }
    }
    @media (max-width: 520px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .brand { font-size: 16px; gap: 8px; }
      .brand-mark { width: 31px; height: 31px; }
      .page-hero { min-height: 390px; }
      .page-hero h1 { font-size: 36px; }
      .hero-copy { font-size: 14px; }
      .hero-meta { gap: 12px 18px; }
      .section-heading h2, .intro-grid h2, .matrix-aside h2 { font-size: 26px; }
      .topic-grid { grid-template-columns: 1fr; }
      .topic-item { min-height: 88px; border-right: 0; border-bottom: 1px solid var(--line); }
      .topic-item:last-child { border-bottom: 0; }
      .matrix-list { grid-template-columns: 1fr; }
      .matrix-entry:nth-child(odd) { margin-right: 0; }
      .article-row { grid-template-columns: 1fr auto; gap: 6px 14px; padding: 19px 0; }
      .article-date { grid-column: 1 / -1; }
      .article-arrow { grid-column: 2; grid-row: 2 / 4; }
      .feature-item { grid-template-columns: 34px 1fr; padding: 17px; }
      .closing-inner { align-items: flex-start; flex-direction: column; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 25px 18px; }
      .footer-top > :first-child { grid-column: 1 / -1; }
      .footer-bottom { align-items: flex-start; flex-direction: column; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }