/* roulang page: index */
:root {
      color-scheme: dark;
      --ink: #f4f3ed;
      --muted: #b8c1ba;
      --dim: #89968f;
      --base: #111b1a;
      --panel: #192522;
      --panel-2: #202e29;
      --line: rgba(227, 239, 228, .13);
      --mint: #b9f27c;
      --coral: #ff9d7a;
      --gold: #f1d48a;
      --radius: 18px;
      --shadow: 0 18px 48px rgba(0, 0, 0, .24);
      --max: 1160px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--base);
      color: var(--ink);
      font: 16px/1.7 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    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 var(--mint);
      outline-offset: 4px;
    }
    .container { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
    .site-header {
      position: sticky; top: 0; z-index: 20;
      background: rgba(17, 27, 26, .92);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(16px);
    }
    .nav {
      min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
    }
    .brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; font-weight: 750; }
    .brand-mark {
      width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto;
      border-radius: 12px; color: #172117; font-weight: 900;
      background: linear-gradient(135deg, var(--mint), var(--gold));
    }
    .brand-name { font-size: 15px; line-height: 1.25; }
    .nav-links { display: flex; align-items: center; gap: 24px; color: var(--muted); font-size: 14px; }
    .nav-links a { transition: color .2s ease; }
    .nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--mint); }
    .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: 999px;
      background: var(--mint); color: #172117; font-weight: 750; transition: .2s ease;
    }
    .nav-cta:hover, .button:hover { background: #d0ffa4; transform: translateY(-2px); box-shadow: 0 10px 25px rgba(185,242,124,.14); }
    .button.secondary { color: var(--ink); background: transparent; border-color: var(--line); }
    .button.secondary:hover { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.32); }
    .hero {
      position: relative; overflow: hidden; padding: 76px 0 58px;
      background:
        radial-gradient(ellipse at 86% 10%, rgba(185,242,124,.14), transparent 33%),
        radial-gradient(ellipse at 12% 92%, rgba(255,157,122,.1), transparent 35%),
        linear-gradient(115deg, #172421 0%, #111b1a 54%, #222b24 100%);
      border-bottom: 1px solid var(--line);
    }
    .hero-inner { position: relative; z-index: 1; max-width: 880px; }
    .eyebrow, .section-kicker {
      color: var(--mint); text-transform: uppercase; font-size: 12px; font-weight: 800;
      letter-spacing: .12em;
    }
    h1 { max-width: 850px; margin: 16px 0 20px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; }
    h1 span { color: var(--mint); }
    .hero-copy { max-width: 810px; color: #d2d9d1; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
    .hero-metrics {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
      margin-top: 46px; border: 1px solid var(--line); border-radius: var(--radius);
      overflow: hidden; background: var(--line);
    }
    .metric { padding: 18px 20px; background: rgba(17,27,26,.76); }
    .metric strong { display: block; color: var(--gold); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 13px; }
    main section { padding: 68px 0; border-bottom: 1px solid var(--line); }
    main section:nth-of-type(even) { background: rgba(255,255,255,.018); }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 28px; }
    h2 { margin: 8px 0 0; font-size: clamp(26px, 3vw, 38px); line-height: 1.2; }
    .section-intro { max-width: 650px; margin: 0; color: var(--muted); }
    .split { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; }
    .feature-panel {
      padding: 28px; border-radius: var(--radius); border: 1px solid var(--line);
      background: linear-gradient(145deg, rgba(185,242,124,.11), rgba(25,37,34,.92) 56%, rgba(255,157,122,.08));
      box-shadow: var(--shadow);
    }
    .feature-panel h3, .item h3 { margin: 0 0 10px; font-size: 19px; }
    .feature-panel p, .item p { margin: 0; color: var(--muted); }
    .list { display: grid; gap: 12px; padding: 0; margin: 0; list-style: none; }
    .list li { display: flex; gap: 12px; color: var(--muted); }
    .list li::before { content: "✓"; color: var(--mint); font-weight: 900; }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .item {
      min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius);
      background: var(--panel); transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }
    .item:hover { transform: translateY(-4px); border-color: rgba(185,242,124,.42); box-shadow: var(--shadow); }
    .item-number { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 15px; border-radius: 11px; background: rgba(185,242,124,.12); color: var(--mint); font-weight: 800; }
    .badge {
      display: inline-flex; align-items: center; padding: 5px 10px; border: 1px solid rgba(241,212,138,.28);
      border-radius: 999px; color: var(--gold); background: rgba(241,212,138,.08); font-size: 12px; font-weight: 700;
    }
    .calendar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .calendar .item { border-top: 3px solid var(--mint); }
    .calendar time { display: block; margin-bottom: 10px; color: var(--gold); font-size: 13px; font-weight: 750; }
    .editorial { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
    .editorial-main {
      min-height: 270px; display: flex; flex-direction: column; justify-content: end; padding: 30px;
      border-radius: var(--radius); border: 1px solid var(--line);
      background: linear-gradient(145deg, rgba(185,242,124,.16), transparent 58%), var(--panel-2);
    }
    .editorial-main p { max-width: 600px; color: var(--muted); }
    .editorial-side { display: grid; gap: 14px; }
    .quote { border-left: 3px solid var(--coral); padding: 4px 0 4px 18px; color: #e5e8df; }
    .news-row { display: grid; grid-template-columns: 92px 1fr auto; gap: 16px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--line); }
    .news-date { color: var(--gold); font-size: 13px; }
    .news-title { font-weight: 700; }
    .news-tag { color: var(--dim); font-size: 12px; }
    .media-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .media-tile {
      min-height: 160px; display: flex; flex-direction: column; justify-content: space-between; padding: 18px;
      border-radius: var(--radius); border: 1px solid var(--line);
      background: linear-gradient(145deg, rgba(255,157,122,.12), transparent 60%), var(--panel);
    }
    .media-tile:nth-child(even) { background: linear-gradient(145deg, rgba(185,242,124,.12), transparent 60%), var(--panel); }
    .bar-list { display: grid; gap: 18px; }
    .bar-line { display: grid; grid-template-columns: 150px 1fr 48px; gap: 14px; align-items: center; }
    .bar-track { height: 10px; overflow: hidden; border-radius: 99px; background: rgba(255,255,255,.09); }
    .bar-fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--mint), var(--gold)); }
    .bar-line strong { color: var(--gold); text-align: right; }
    .assurance { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .assurance div { padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
    .assurance strong { display: block; margin-bottom: 6px; color: var(--mint); }
    .assurance span { color: var(--muted); font-size: 14px; }
    .subscribe {
      display: flex; align-items: center; justify-content: space-between; gap: 26px; padding: 28px;
      border: 1px solid rgba(185,242,124,.28); border-radius: var(--radius);
      background: linear-gradient(120deg, rgba(185,242,124,.12), rgba(255,157,122,.08));
    }
    .subscribe h2 { font-size: 25px; }
    .subscribe p { margin: 8px 0 0; color: var(--muted); }
    .subscribe-form { display: flex; gap: 10px; min-width: min(100%, 390px); }
    .subscribe-form input {
      width: 100%; min-width: 0; padding: 11px 14px; color: var(--ink);
      background: rgba(17,27,26,.72); border: 1px solid var(--line); border-radius: 999px;
    }
    .faq-list { display: grid; gap: 10px; }
    details { border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
    summary { cursor: pointer; padding: 17px 20px; font-weight: 750; }
    details p { margin: 0; padding: 0 20px 18px; color: var(--muted); }
    .site-footer { padding: 48px 0 22px; background: #0d1514; }
    .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
    .footer-grid h3 { margin: 0 0 14px; font-size: 15px; }
    .footer-grid p, .footer-grid a { color: var(--muted); font-size: 14px; }
    .footer-links { display: grid; gap: 9px; }
    .footer-links a:hover { color: var(--mint); }
    .copyright { margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--dim); font-size: 12px; }
    @media (max-width: 900px) {
      .nav-links { gap: 14px; }
      .nav-cta { display: none; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .calendar, .media-strip, .assurance { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(100% - 32px, var(--max)); }
      .nav { min-height: 68px; align-items: flex-start; flex-direction: column; gap: 8px; padding: 12px 0; }
      .brand-name { font-size: 14px; }
      .nav-links { width: 100%; overflow-x: auto; gap: 20px; padding: 3px 0 5px; white-space: nowrap; scrollbar-width: none; }
      .nav-links::-webkit-scrollbar { display: none; }
      .hero { padding: 54px 0 36px; }
      .hero-copy { font-size: 15px; }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); margin-top: 30px; }
      main section { padding: 48px 0; }
      .section-head { align-items: flex-start; flex-direction: column; gap: 12px; }
      .split, .grid-2, .grid-3, .editorial { grid-template-columns: 1fr; }
      .calendar, .media-strip, .assurance { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .news-row { grid-template-columns: 76px 1fr; gap: 10px; }
      .news-tag { grid-column: 2; }
      .bar-line { grid-template-columns: 105px 1fr 38px; gap: 9px; font-size: 13px; }
      .subscribe { align-items: stretch; flex-direction: column; padding: 22px; }
      .subscribe-form { min-width: 0; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
    }
    @media (max-width: 390px) {
      .calendar, .media-strip, .assurance { grid-template-columns: 1fr; }
      .hero-actions .button { width: 100%; }
      .subscribe-form { flex-direction: column; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }