/* roulang page: index */
:root {
      --bg-0: #050A12;
      --bg-1: #0A1628;
      --bg-2: #10233F;
      --blue-1: #1A4F8C;
      --blue-2: #2E6DB5;
      --glow: #4C9DFF;
      --glow-shadow: rgba(76, 157, 255, .45);
      --gold: #C4A35A;
      --gold-2: #E0C47A;
      --text: #E8EEF7;
      --text-2: #A9B6C8;
      --border: rgba(255, 255, 255, .12);
      --glass: rgba(12, 28, 52, .5);
      --glass-strong: rgba(12, 28, 52, .72);
      --danger: #E07070;
      --ok: #7BC67E;
      --radius-card: 18px;
      --radius-btn: 8px;
      --radius-input: 10px;
      --container: 1240px;
      --gutter: 24px;
      --header-h: 118px;
      --shadow-deep: 0 18px 50px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .08);
      --shadow-glow: 0 8px 28px var(--glow-shadow);
      --serif: "Noto Serif SC", "Source Han Serif SC", serif;
      --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--sans);
      font-size: 17px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg-0);
      min-height: 100%;
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      opacity: .045;
      background-image:
        repeating-linear-gradient(0deg, transparent, transparent 23px, rgba(196, 163, 90, .35) 24px),
        repeating-linear-gradient(90deg, transparent, transparent 23px, rgba(196, 163, 90, .12) 24px);
    }
    img { max-width: 100%; height: auto; display: block; border: 0; }
    a { color: var(--gold-2); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: var(--glow); }
    a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
      outline: 2px solid var(--glow);
      outline-offset: 3px;
    }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; border: 0; background: none; color: inherit; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    h1, h2, h3, h4 { font-family: var(--serif); font-weight: 700; line-height: 1.25; color: var(--text); margin: 0; }
    p { margin: 0 0 1em; color: var(--text-2); }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; position: relative; z-index: 1; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(18px) saturate(140%);
    }
    .topbar {
      background: rgba(5, 10, 18, .72);
      border-bottom: 1px solid var(--border);
      font-size: 13px;
      color: var(--text-2);
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 36px;
      flex-wrap: wrap;
    }
    .topbar a { color: var(--text); }
    .topbar a:hover { color: var(--gold-2); }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .topbar-dot { width: 1px; height: 12px; background: var(--border); display: inline-block; }
    .compliance-chip {
      color: var(--gold-2);
      border: 1px solid rgba(196, 163, 90, .35);
      padding: 2px 8px;
      border-radius: 999px;
      font-size: 12px;
    }
    .nav-row {
      background: rgba(10, 22, 40, .78);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      min-height: 82px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text);
      flex-shrink: 0;
    }
    .logo:hover { color: var(--text); opacity: .92; }
    .logo-mark {
      width: 44px;
      height: 44px;
      flex-shrink: 0;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text small { font-family: var(--serif); color: var(--gold); font-size: 12px; letter-spacing: .08em; }
    .logo-text strong { font-family: var(--serif); font-size: 18px; font-weight: 700; }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .nav-links a {
      color: var(--text-2);
      font-size: 14px;
      padding: 10px 10px;
      border-radius: 8px;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.is-active {
      color: var(--text);
      background: rgba(46, 109, 181, .18);
    }
    .nav-links a.is-active::after {
      content: "";
      position: absolute;
      left: 12px; right: 12px; bottom: 6px;
      height: 1px;
      background: var(--gold);
    }
    .nav-cta { flex-shrink: 0; }
    .burger {
      display: none;
      width: 44px; height: 44px;
      align-items: center; justify-content: center;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: var(--glass);
    }
    .burger span, .burger span::before, .burger span::after {
      display: block; width: 18px; height: 2px; background: var(--text); position: relative; border-radius: 2px;
    }
    .burger span::before, .burger span::after { content: ""; position: absolute; left: 0; }
    .burger span::before { top: -6px; }
    .burger span::after { top: 6px; }
    .drawer-backdrop {
      display: none;
      position: fixed; inset: 0;
      background: rgba(0, 0, 0, .55);
      z-index: 998;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 22px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, filter .2s ease;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--blue-2), #4C9DFF);
      color: #fff;
      box-shadow: var(--shadow-glow);
    }
    .btn-primary:hover {
      filter: brightness(1.08);
      transform: translateY(-1px);
      box-shadow: 0 12px 36px rgba(76, 157, 255, .6);
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: rgba(12, 28, 52, .42);
      border: 1px solid var(--border);
      color: var(--text);
      backdrop-filter: blur(18px) saturate(140%);
    }
    .btn-ghost:hover { border-color: var(--gold); color: var(--gold-2); }
    .btn-text {
      padding: 0;
      min-height: auto;
      color: var(--gold-2);
      border-bottom: 1px solid var(--gold);
      border-radius: 0;
      font-weight: 600;
    }
    .btn-text:hover { color: var(--glow); border-color: var(--glow); }
    .btn-lg { min-height: 50px; padding: 0 26px; }
    main { position: relative; z-index: 1; }
    .section {
      padding: 104px 0;
      position: relative;
    }
    .section-alt { background: linear-gradient(180deg, rgba(16, 35, 63, .35), transparent 40%); }
    .section-head { max-width: 760px; margin-bottom: 40px; }
    .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--gold);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .12em;
      margin-bottom: 12px;
    }
    .kicker::before {
      content: "";
      width: 22px; height: 1px;
      background: var(--gold);
    }
    h2 {
      font-size: clamp(28px, 3vw, 36px);
      margin-bottom: 16px;
    }
    h2 .gold-line {
      display: block;
      width: 48px; height: 1px;
      background: linear-gradient(90deg, var(--gold), transparent);
      margin-top: 14px;
    }
    h3 { font-size: 20px; margin-bottom: 10px; }
    .lead { font-size: 16px; line-height: 1.8; color: var(--text-2); }
    .glass {
      background: var(--glass);
      backdrop-filter: blur(18px) saturate(140%);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-deep);
    }
    .glass:hover {
      background: rgba(12, 28, 52, .62);
      border-color: rgba(196, 163, 90, .55);
    }
    .hero {
      position: relative;
      min-height: min(92vh, 860px);
      overflow: hidden;
    }
    .hero-track { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0;
      opacity: 0;
      visibility: hidden;
      transition: opacity .7s ease, visibility .7s ease;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
    .hero-slide img {
      width: 100%; height: 100%; object-fit: cover;
      filter: saturate(.85) brightness(.55);
    }
    .hero-mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(5, 10, 18, .88) 0%, rgba(5, 10, 18, .55) 48%, rgba(5, 10, 18, .35) 100%),
        linear-gradient(180deg, rgba(5, 10, 18, .2), rgba(5, 10, 18, .7));
    }
    .hero-content {
      position: relative;
      z-index: 2;
      min-height: min(92vh, 860px);
      display: flex;
      align-items: center;
      padding: 48px 0 88px;
    }
    .hero-copy { max-width: 720px; }
    .hero h1 {
      font-size: clamp(32px, 5vw, 54px);
      margin: 8px 0 18px;
    }
    .hero-sub {
      font-size: 18px;
      color: var(--text);
      margin-bottom: 16px;
      font-weight: 500;
    }
    .hero-intro { max-width: 640px; margin-bottom: 28px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
    .trust-strip {
      display: flex; flex-wrap: wrap; gap: 10px;
    }
    .trust-strip span {
      font-size: 13px;
      color: var(--text-2);
      border: 1px solid rgba(196, 163, 90, .28);
      padding: 6px 12px;
      border-radius: 999px;
      background: rgba(12, 28, 52, .4);
    }
    .hero-controls {
      position: absolute;
      z-index: 3;
      left: 0; right: 0; bottom: 28px;
    }
    .hero-controls-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
    }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px; height: 4px; border-radius: 4px;
      background: rgba(255, 255, 255, .28);
    }
    .hero-dots button.is-on { background: var(--gold-2); }
    .hero-arrows { display: flex; gap: 8px; }
    .icon-btn {
      width: 44px; height: 44px;
      display: inline-flex; align-items: center; justify-content: center;
      border-radius: 50%;
      border: 1px solid var(--border);
      background: rgba(12, 28, 52, .5);
      color: var(--text);
    }
    .icon-btn:hover { border-color: var(--glow); color: var(--glow); box-shadow: 0 0 0 4px rgba(76, 157, 255, .15); }
    .play-orb {
      width: 64px; height: 64px;
      border-radius: 50%;
      border: 1px solid var(--gold);
      color: var(--gold-2);
      background: rgba(12, 28, 52, .45);
      box-shadow: 0 0 0 8px rgba(196, 163, 90, .08), 0 10px 30px rgba(0, 0, 0, .35);
    }
    .metrics {
      margin-top: -48px;
      position: relative;
      z-index: 4;
      padding-bottom: 48px;
    }
    .metrics-board {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
      padding: 28px;
      background: rgba(8, 18, 34, .78);
      border: 1px solid var(--border);
      border-radius: 20px;
      backdrop-filter: blur(18px) saturate(140%);
      box-shadow: var(--shadow-deep);
    }
    .metric { padding: 8px 6px; border-right: 1px solid var(--border); }
    .metric:last-child { border-right: 0; }
    .metric-num {
      font-size: 32px;
      font-weight: 700;
      font-variant-numeric: tabular-nums;
      color: var(--text);
      line-height: 1.1;
    }
    .metric-num em { font-style: normal; font-size: 14px; color: var(--gold); margin-left: 4px; font-weight: 600; }
    .metric-label { font-size: 13px; color: var(--text-2); margin-top: 8px; }
    .intro-grid {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 48px;
      align-items: center;
    }
    .intro-photo {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      min-height: 420px;
      border: 1px solid var(--border);
    }
    .intro-photo img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .intro-photo::after {
      content: "";
      position: absolute; inset: 14px;
      border: 1px solid rgba(196, 163, 90, .4);
      pointer-events: none;
    }
    .check-list { margin-top: 18px; display: grid; gap: 10px; }
    .check-list li {
      display: flex; gap: 10px; color: var(--text);
      font-size: 15px;
    }
    .check-list i {
      width: 18px; height: 18px; flex-shrink: 0; margin-top: 4px;
      border-radius: 50%;
      border: 1px solid var(--gold);
      background: radial-gradient(circle at 50% 50%, var(--gold-2), transparent 70%);
    }
    .bento {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .bento-card {
      padding: 28px;
      min-height: 180px;
      position: relative;
      overflow: hidden;
      transition: transform .25s ease, border-color .25s ease, background .25s ease;
    }
    .bento-card:hover { transform: translateY(-3px); }
    .bento-lg { grid-column: span 2; min-height: 280px; }
    .bento-card .cover {
      position: absolute; inset: 0;
      opacity: .22;
    }
    .bento-card .cover img { width: 100%; height: 100%; object-fit: cover; }
    .bento-card .inner { position: relative; z-index: 1; }
    .tag {
      display: inline-block;
      font-size: 12px;
      color: var(--gold-2);
      border: 1px solid rgba(196, 163, 90, .4);
      padding: 2px 8px;
      border-radius: 999px;
      margin-bottom: 12px;
    }
    .bento-card p { font-size: 15px; }
    .method-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .method-card {
      padding: 28px;
      min-height: 220px;
      transition: transform .25s ease, border-color .25s ease;
    }
    .method-card:hover { transform: translateY(-3px); }
    .icon-line {
      width: 36px; height: 36px;
      margin-bottom: 16px;
      color: var(--gold-2);
    }
    .hot-grid {
      display: grid;
      grid-template-columns: 1.35fr 1fr;
      grid-template-rows: auto auto;
      gap: 20px;
    }
    .hot-card {
      position: relative;
      overflow: hidden;
      min-height: 210px;
      display: flex;
      align-items: flex-end;
    }
    .hot-lg { grid-row: span 2; min-height: 440px; }
    .hot-card img {
      position: absolute; inset: 0;
      width: 100%; height: 100%; object-fit: cover;
      filter: brightness(.45) saturate(.9);
    }
    .hot-card .inner {
      position: relative; z-index: 1;
      padding: 28px;
      background: linear-gradient(180deg, transparent, rgba(5, 10, 18, .85));
      width: 100%;
    }
    .compare-wrap { overflow-x: auto; }
    table.compare {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      min-width: 720px;
      background: var(--glass);
      border: 1px solid var(--border);
      border-radius: 18px;
      overflow: hidden;
    }
    table.compare th, table.compare td {
      padding: 16px 18px;
      text-align: left;
      border-bottom: 1px solid var(--border);
      font-size: 15px;
      vertical-align: top;
    }
    table.compare th {
      font-family: var(--serif);
      background: rgba(26, 79, 140, .35);
      color: var(--text);
      font-weight: 600;
    }
    table.compare tr:last-child td { border-bottom: 0; }
    table.compare td:first-child { color: var(--gold-2); width: 18%; }
    .badge {
      display: inline-block;
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 999px;
      margin-left: 6px;
      border: 1px solid var(--border);
      color: var(--text-2);
    }
    .badge-gold { border-color: rgba(196, 163, 90, .5); color: var(--gold-2); }
    .dark-band {
      background:
        linear-gradient(180deg, rgba(5, 10, 18, .78), rgba(5, 10, 18, .88)),
        url("/assets/images/039f7d68ba2f3d91.jpg") center/cover no-repeat;
      padding: 104px 0;
    }
    .dark-split {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 40px;
      align-items: start;
    }
    .idea-quote {
      font-family: var(--serif);
      font-size: 28px;
      line-height: 1.45;
      color: var(--text);
    }
    .case-list { display: grid; gap: 16px; }
    .case-item {
      padding: 20px 22px;
      display: grid;
      grid-template-columns: 120px 1fr auto;
      gap: 16px;
      align-items: center;
    }
    .case-item strong { color: var(--gold-2); font-size: 14px; }
    .timeline {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 12px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      top: 22px; left: 4%; right: 4%;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--gold), transparent);
    }
    .tl-node { text-align: center; position: relative; padding-top: 8px; }
    .tl-dot {
      width: 16px; height: 16px; margin: 0 auto 16px;
      border-radius: 50%;
      background: var(--bg-0);
      border: 2px solid var(--gold);
      box-shadow: 0 0 0 6px rgba(196, 163, 90, .12);
    }
    .tl-node h3 { font-size: 16px; }
    .tl-node p { font-size: 14px; }
    .story-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .story-card { overflow: hidden; }
    .story-card img { height: 160px; width: 100%; object-fit: cover; }
    .story-body { padding: 22px; }
    .quote {
      font-size: 15px;
      color: var(--text);
      border-left: 2px solid var(--gold);
      padding-left: 12px;
      margin: 10px 0 0;
    }
    .statbar {
      background:
        linear-gradient(90deg, rgba(5, 10, 18, .88), rgba(16, 35, 63, .75)),
        url("/assets/images/a114452eb005f5a9.jpg") center/cover no-repeat;
      padding: 56px 0;
    }
    .statbar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .statbar .n {
      font-size: 40px; font-weight: 700; font-variant-numeric: tabular-nums;
    }
    .statbar p { margin: 8px 0 0; }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .review-card { padding: 24px; }
    .stars { color: var(--gold-2); letter-spacing: 2px; margin-bottom: 10px; font-size: 14px; }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .news-card { overflow: hidden; display: flex; flex-direction: column; }
    .news-card img { height: 170px; width: 100%; object-fit: cover; }
    .news-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
    .news-date { font-size: 13px; color: var(--gold); margin-bottom: 8px; }
    .news-body p { flex: 1; font-size: 15px; }
    .more-row { margin-top: 24px; text-align: right; }
    .seal-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }
    .seal {
      padding: 24px 18px;
      text-align: center;
    }
    .seal-ring {
      width: 72px; height: 72px; margin: 0 auto 14px;
      border: 1px solid var(--gold);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      color: var(--gold-2);
      font-family: var(--serif);
      font-size: 18px;
      box-shadow: inset 0 0 0 4px rgba(196, 163, 90, .15);
    }
    .seal p { font-size: 14px; }
    .quick-tags { display: flex; flex-wrap: wrap; gap: 10px; }
    .quick-tags a {
      min-height: 44px;
      display: inline-flex; align-items: center;
      padding: 0 16px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: var(--glass);
      color: var(--text);
      font-size: 14px;
    }
    .quick-tags a:hover { border-color: var(--gold); color: var(--gold-2); }
    .faq-list { display: grid; gap: 12px; max-width: 920px; }
    .faq-item {
      overflow: hidden;
    }
    .faq-item button.faq-q {
      width: 100%;
      text-align: left;
      min-height: 56px;
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
    }
    .faq-item button.faq-q span.plus {
      color: var(--gold-2);
      font-size: 22px;
      line-height: 1;
    }
    .faq-a {
      display: none;
      padding: 0 20px 18px;
      color: var(--text-2);
      font-size: 15px;
    }
    .faq-item.is-open .faq-a { display: block; }
    .faq-item.is-open { border-color: rgba(196, 163, 90, .5); }
    .convert {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 28px;
      align-items: stretch;
    }
    form.assess {
      padding: 32px;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 14px; color: var(--text); }
    input, select, textarea {
      background: rgba(5, 10, 18, .55);
      border: 1px solid var(--border);
      border-radius: var(--radius-input);
      color: var(--text);
      padding: 12px 14px;
      min-height: 44px;
      font-size: 15px;
    }
    textarea { min-height: 120px; resize: vertical; }
    .error { color: var(--danger); font-size: 13px; min-height: 18px; }
    .form-note { font-size: 13px; color: var(--text-2); margin-top: 10px; }
    .form-success {
      display: none;
      padding: 16px;
      border: 1px solid rgba(123, 198, 126, .4);
      color: var(--ok);
      border-radius: 10px;
      margin-bottom: 12px;
    }
    .aside-contact { padding: 32px; }
    .aside-contact h3 { margin-bottom: 16px; }
    .contact-line { margin: 12px 0; color: var(--text); }
    .contact-line a { color: var(--text); }
    .bottom-cta {
      padding: 72px 0;
      background:
        linear-gradient(90deg, rgba(5, 10, 18, .86), rgba(26, 79, 140, .45)),
        url("/assets/images/007e7fb8ea08e213.jpg") center/cover no-repeat;
      border-top: 1px solid var(--border);
    }
    .bottom-cta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 24px;
      flex-wrap: wrap;
    }
    .bottom-cta h2 { margin: 0; }
    .site-footer {
      background: #050A12;
      border-top: 1px solid var(--border);
      padding: 56px 0 24px;
      position: relative;
      z-index: 1;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
      gap: 32px;
      margin-bottom: 36px;
    }
    .foot-grid h3 { font-size: 16px; margin-bottom: 14px; color: var(--gold-2); }
    .foot-grid a, .foot-grid p { color: var(--text-2); font-size: 14px; display: block; margin: 0 0 8px; }
    .foot-grid a:hover { color: var(--text); }
    .foot-bottom {
      border-top: 1px solid var(--border);
      padding-top: 18px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-2);
    }
    .visually-hidden {
      position: absolute !important;
      width: 1px; height: 1px;
      padding: 0; margin: -1px;
      overflow: hidden; clip: rect(0,0,0,0);
      white-space: nowrap; border: 0;
    }
    @media (max-width: 1280px) {
      .metrics-board { grid-template-columns: repeat(3, 1fr); }
      .metric:nth-child(3) { border-right: 0; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .burger { display: inline-flex; }
      .nav-links.is-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0; right: 0; bottom: 0;
        width: min(86vw, 360px);
        background: #0A1628;
        z-index: 999;
        padding: 88px 24px 24px;
        align-items: stretch;
        gap: 4px;
        box-shadow: -20px 0 40px rgba(0,0,0,.4);
      }
      .nav-links.is-open a { min-height: 44px; display: flex; align-items: center; }
      .drawer-backdrop.is-on { display: block; }
      .intro-grid, .dark-split, .convert, .hot-grid { grid-template-columns: 1fr; }
      .hot-lg { grid-row: auto; min-height: 320px; }
      .bento { grid-template-columns: 1fr 1fr; }
      .bento-lg { grid-column: span 2; }
      .method-grid { grid-template-columns: 1fr 1fr; }
      .story-grid { grid-template-columns: 1fr 1fr; }
      .seal-grid { grid-template-columns: 1fr 1fr 1fr; }
      .timeline { grid-template-columns: 1fr 1fr 1fr; }
      .timeline::before { display: none; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .case-item { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      :root { --header-h: 96px; }
      .topbar-right .hide-sm, .topbar-dot.hide-sm { display: none; }
      .section { padding: 64px 0; }
      .dark-band { padding: 64px 0; }
      .metrics-board { grid-template-columns: 1fr 1fr; padding: 18px; }
      .metric { border-right: 0; border-bottom: 1px solid var(--border); }
      .method-grid, .bento, .news-grid, .story-grid, .statbar-grid { grid-template-columns: 1fr; }
      .bento-lg { grid-column: auto; }
      .form-grid { grid-template-columns: 1fr; }
      .seal-grid { grid-template-columns: 1fr 1fr; }
      .hero h1 { font-size: 30px; }
      .hero-sub, .hero-intro { font-size: 16px; }
      .idea-quote { font-size: 22px; }
      .timeline { grid-template-columns: 1fr; }
      .nav-cta .btn { padding: 0 12px; font-size: 13px; }
      .logo-text strong { font-size: 16px; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, var(--container)); }
      .metrics-board { grid-template-columns: 1fr; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .bottom-cta-inner { flex-direction: column; align-items: flex-start; }
      .review-grid { grid-template-columns: 1fr; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important;
        transition: none !important;
      }
    }

/* roulang page: index */
:root {
      --bg-deep: #070B14;
      --bg-navy: #0B1A33;
      --bg-panel: #10233F;
      --primary: #1B4F8A;
      --primary-bright: #2E7ACB;
      --cyan: #3ED0F7;
      --gold: #C4A35A;
      --text: #E8EEF7;
      --text-muted: #9AA8BC;
      --danger: #D25B5B;
      --glass: rgba(16, 35, 63, .52);
      --glass-border: rgba(255, 255, 255, .12);
      --radius-card: 14px;
      --radius-btn: 8px;
      --shadow-1: 0 8px 28px rgba(0, 0, 0, .28);
      --shadow-2: 0 16px 48px rgba(0, 0, 0, .4);
      --space-section: 88px;
      --container: 1240px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; background: var(--bg-deep); color: var(--text); overflow-x: hidden; }
    body {
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      background-image:
        radial-gradient(1200px 500px at 80% -10%, rgba(46, 122, 203, .18), transparent 55%),
        radial-gradient(900px 420px at -10% 20%, rgba(62, 208, 247, .08), transparent 50%);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    h1, h2, h3, .brand-name, .hero-title, .slide-title {
      font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      letter-spacing: .02em;
      line-height: 1.28;
    }
    h2 { font-size: clamp(26px, 2.4vw, 32px); font-weight: 700; margin: 0 0 14px; }
    h3 { font-size: clamp(18px, 1.6vw, 22px); font-weight: 600; margin: 0 0 8px; }
    p { margin: 0 0 1.05em; }
    :focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }
    .container { width: min(100% - 32px, var(--container)); margin: 0 auto; }
    .gold-rule {
      width: 48px; height: 2px; background: linear-gradient(90deg, var(--gold), transparent);
      margin: 0 0 18px;
    }
    .sec {
      padding: var(--space-section) 0;
      position: relative;
    }
    .sec-alt {
      background: linear-gradient(180deg, rgba(11, 26, 51, .55), rgba(7, 11, 20, .2));
    }
    .sec-lead {
      max-width: 46em;
      color: var(--text-muted);
      font-size: 15px;
      margin-bottom: 36px;
    }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--gold); font-size: 13px; font-weight: 500; letter-spacing: .12em;
      margin-bottom: 10px;
    }
    .kicker::before { content: ""; width: 18px; height: 1px; background: var(--gold); }
    .glass {
      background: var(--glass);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06), var(--shadow-1);
      transition: border-color .2s, transform .2s, box-shadow .2s;
    }
    .glass:hover {
      border-color: rgba(62, 208, 247, .38);
      transform: translateY(-3px);
      box-shadow: 0 0 0 1px rgba(196, 163, 90, .18), var(--shadow-2);
    }
    .btn-glow {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 22px;
      background: linear-gradient(180deg, var(--primary-bright), var(--primary));
      color: #fff; border: 1px solid rgba(62, 208, 247, .35);
      border-radius: var(--radius-btn); font-weight: 600; font-size: 15px;
      box-shadow: 0 0 20px rgba(62, 208, 247, .35);
      transition: filter .2s, box-shadow .2s, border-color .2s, transform .15s;
      cursor: pointer;
    }
    .btn-glow:hover {
      filter: brightness(1.12);
      border-color: var(--gold);
      box-shadow: 0 0 26px rgba(62, 208, 247, .5), 0 0 0 1px var(--gold);
      transform: translateY(-1px);
    }
    .btn-glow:active { transform: translateY(0); filter: brightness(.96); }
    .btn-ghost {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 10px 20px;
      background: transparent; color: var(--gold);
      border: 1px solid var(--gold); border-radius: var(--radius-btn);
      font-weight: 600; font-size: 15px;
      transition: background .2s, color .2s, box-shadow .2s;
      cursor: pointer;
    }
    .btn-ghost:hover { background: rgba(196, 163, 90, .12); box-shadow: 0 0 16px rgba(196, 163, 90, .25); }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 4px 10px; border-radius: 999px; font-size: 12px;
      border: 1px solid rgba(196, 163, 90, .45);
      color: var(--gold); background: rgba(196, 163, 90, .08);
      white-space: nowrap;
    }
    .badge-cyan {
      border-color: rgba(62, 208, 247, .4);
      color: var(--cyan); background: rgba(62, 208, 247, .08);
    }
    .text-link {
      color: var(--cyan); font-size: 13px; font-weight: 500;
      border-bottom: 1px solid transparent;
    }
    .text-link:hover { border-bottom-color: var(--cyan); }
    .site-header {
      position: sticky; top: 0; z-index: 80;
      background: rgba(7, 11, 20, .72);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .util-bar {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 38px; padding: 6px 0;
      font-size: 13px; color: var(--text-muted);
      background: rgba(11, 26, 51, .55);
      border-bottom: 1px solid rgba(196, 163, 90, .18);
    }
    .util-bar a { color: var(--text); }
    .util-bar a:hover { color: var(--cyan); }
    .util-left, .util-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .main-nav {
      display: flex; align-items: center; justify-content: space-between; gap: 20px;
      min-height: 68px;
    }
    .brand {
      display: flex; align-items: center; gap: 10px; flex-shrink: 0;
      color: var(--text);
    }
    .brand svg { width: 36px; height: 36px; }
    .brand-name { font-size: 18px; font-weight: 700; white-space: nowrap; }
    .nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; justify-content: center; }
    .nav-links a {
      position: relative; padding: 10px 11px; font-size: 14px; color: var(--text-muted);
      min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav-links a:hover { color: var(--text); }
    .nav-links a.active { color: var(--text); }
    .nav-links a.active::after,
    .nav-links a:hover::after {
      content: ""; position: absolute; left: 11px; right: 11px; bottom: 6px; height: 2px;
      background: linear-gradient(90deg, var(--gold), var(--cyan));
      border-radius: 2px;
    }
    .nav-cta { flex-shrink: 0; }
    .nav-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--glass-border);
      background: rgba(16,35,63,.6); color: var(--text); border-radius: 8px; cursor: pointer;
    }
    .drawer {
      display: none; position: fixed; inset: 0; z-index: 90;
      background: rgba(7, 11, 20, .92); backdrop-filter: blur(18px);
      padding: 24px 20px;
    }
    .drawer.open { display: flex; flex-direction: column; }
    .drawer a {
      min-height: 48px; display: flex; align-items: center;
      border-bottom: 1px solid rgba(255,255,255,.08); font-size: 16px;
    }
    .hero {
      position: relative; min-height: min(88vh, 820px);
      overflow: hidden; background: var(--bg-navy);
    }
    .hero-track { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; transition: opacity .6s ease;
      pointer-events: none;
    }
    .hero-slide.active { opacity: 1; pointer-events: auto; }
    .hero-slide img {
      width: 100%; height: 100%; object-fit: cover; filter: saturate(.85) contrast(1.05);
    }
    .hero-scrim {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(7,11,20,.88) 0%, rgba(7,11,20,.62) 48%, rgba(7,11,20,.35) 100%),
        linear-gradient(180deg, rgba(7,11,20,.25) 0%, rgba(7,11,20,.72) 100%);
    }
    .hero-inner {
      position: relative; z-index: 2;
      min-height: min(88vh, 820px);
      display: flex; flex-direction: column; justify-content: flex-end;
      padding: 40px 0 28px;
    }
    .hero-copy { max-width: 760px; padding-bottom: 28px; }
    .hero h1, .slide-title {
      font-size: clamp(32px, 4.4vw, 50px);
      margin: 0 0 16px; font-weight: 700;
      text-shadow: 0 8px 32px rgba(0,0,0,.45);
    }
    .hero-lead {
      font-size: 16px; color: #d5deea; max-width: 42em; margin-bottom: 22px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
    .play-btn {
      width: 56px; height: 56px; border-radius: 999px;
      border: 1px solid rgba(62,208,247,.5);
      background: rgba(16,35,63,.55);
      box-shadow: 0 0 24px rgba(62,208,247,.35);
      color: #fff; cursor: pointer;
      display: inline-flex; align-items: center; justify-content: center;
    }
    .play-btn:hover { border-color: var(--gold); }
    .micro-bar {
      display: flex; flex-wrap: wrap; gap: 10px 22px;
      padding: 12px 16px; border-radius: 12px;
      background: rgba(16,35,63,.55); border: 1px solid rgba(255,255,255,.12);
      backdrop-filter: blur(16px);
      font-size: 13px; color: var(--text-muted);
    }
    .micro-bar strong { color: var(--cyan); font-weight: 600; margin-right: 6px; }
    .hero-progress {
      position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: rgba(255,255,255,.12); z-index: 3;
    }
    .hero-progress > span {
      display: block; height: 100%; width: 0;
      background: linear-gradient(90deg, var(--gold), var(--cyan));
    }
    .hero-progress > span.run { width: 100%; transition: width 6.2s linear; }
    .hero-nav {
      position: absolute; right: 24px; bottom: 88px; z-index: 4;
      display: flex; gap: 8px;
    }
    .hero-nav button {
      width: 44px; height: 44px; border-radius: 8px;
      border: 1px solid var(--glass-border); background: rgba(7,11,20,.55); color: #fff; cursor: pointer;
    }
    .dots { display: flex; gap: 8px; margin-top: 16px; }
    .dots button {
      width: 28px; height: 4px; border: 0; border-radius: 4px;
      background: rgba(255,255,255,.28); cursor: pointer; padding: 0;
    }
    .dots button.on { background: var(--cyan); box-shadow: 0 0 10px rgba(62,208,247,.6); }
    .board-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    }
    .metric { padding: 20px 18px; }
    .metric .num {
      font-family: "Noto Serif SC", serif; font-size: 34px; color: #fff; line-height: 1.1;
      white-space: nowrap;
    }
    .metric .unit { font-size: 13px; color: var(--cyan); margin-left: 4px; }
    .metric .delta { font-size: 12px; color: var(--gold); margin: 6px 0; }
    .metric p { font-size: 13px; color: var(--text-muted); margin: 0; }
    .split {
      display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
    }
    .cover-frame {
      border-radius: 16px; overflow: hidden; border: 1px solid rgba(196,163,90,.28);
      box-shadow: var(--shadow-2); position: relative;
    }
    .cover-frame img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
    .cover-frame::after {
      content: ""; position: absolute; inset: 12px; border: 1px solid rgba(196,163,90,.25); pointer-events: none;
    }
    .check-list { list-style: none; padding: 0; margin: 18px 0 0; }
    .check-list li {
      position: relative; padding: 8px 0 8px 22px; color: var(--text-muted); font-size: 15px;
    }
    .check-list li::before {
      content: ""; position: absolute; left: 0; top: 16px; width: 8px; height: 8px;
      border: 1px solid var(--gold); transform: rotate(45deg);
    }
    .matrix {
      display: grid; grid-template-columns: repeat(4, 1fr);
      border: 1px solid rgba(196,163,90,.28);
      border-radius: 12px; overflow: hidden;
    }
    .matrix-cell {
      padding: 22px 18px; border-right: 1px solid rgba(255,255,255,.08);
      border-bottom: 1px solid rgba(255,255,255,.08);
      background: rgba(16,35,63,.42);
      min-height: 176px;
      transition: background .2s, border-color .2s;
    }
    .matrix-cell:nth-child(4n) { border-right: 0; }
    .matrix-cell:nth-last-child(-n+4) { border-bottom: 0; }
    .matrix-cell:hover { background: rgba(27,79,138,.28); }
    .matrix-cell h3 { font-size: 18px; }
    .matrix-cell .meta { font-size: 13px; color: var(--cyan); margin-bottom: 8px; }
    .matrix-cell p { font-size: 14px; color: var(--text-muted); margin-bottom: 12px; }
    .six-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .cap-card { padding: 22px 20px; position: relative; min-height: 210px; }
    .cap-card .data-badge {
      position: absolute; top: 14px; right: 14px;
      font-size: 12px; padding: 3px 10px; border-radius: 999px;
      border: 1px solid rgba(62,208,247,.4); color: var(--cyan);
    }
    .hot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .hot-card { overflow: hidden; display: flex; flex-direction: column; }
    .hot-card img { width: 100%; height: 190px; object-fit: cover; }
    .hot-card .body { padding: 18px 18px 20px; }
    .hot-card dl { display: grid; gap: 6px; margin: 10px 0 16px; font-size: 13px; color: var(--text-muted); }
    .hot-card dt { color: var(--gold); display: inline; }
    .compare-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .compare-col { padding: 24px; }
    .compare-col.risk { border-color: rgba(210,91,91,.35); }
    .compare-col.risk h3 { color: var(--danger); }
    .compare-table { width: 100%; border-collapse: collapse; font-size: 14px; }
    .compare-table th, .compare-table td {
      text-align: left; padding: 10px 8px; border-bottom: 1px solid rgba(255,255,255,.08);
      vertical-align: top;
    }
    .bar { height: 8px; background: rgba(255,255,255,.08); border-radius: 999px; overflow: hidden; margin: 8px 0 16px; }
    .bar > i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--primary-bright), var(--cyan)); width: 0; transition: width 1s ease; }
    .case-band {
      position: relative; padding: 92px 0; overflow: hidden;
      background: #070B14;
    }
    .case-band .bg {
      position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
      filter: grayscale(.25) brightness(.35);
    }
    .case-band .veil {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(7,11,20,.92), rgba(11,26,51,.72) 55%, rgba(7,11,20,.55));
    }
    .case-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
    .case-points article { padding: 16px; }
    .timeline {
      display: flex; gap: 0; overflow-x: auto; padding-bottom: 12px;
      scroll-snap-type: x mandatory;
    }
    .timeline::-webkit-scrollbar { height: 6px; }
    .timeline::-webkit-scrollbar-thumb { background: rgba(196,163,90,.4); border-radius: 6px; }
    .tl-item {
      min-width: 220px; flex: 1; padding: 0 16px 8px;
      border-top: 2px solid rgba(196,163,90,.45);
      scroll-snap-align: start;
    }
    .tl-item .year { color: var(--gold); font-family: "Noto Serif SC", serif; font-size: 22px; margin-top: -14px; background: var(--bg-deep); display: inline-block; padding-right: 8px; }
    .scene-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .scene-card { padding: 22px; display: grid; grid-template-columns: 88px 1fr; gap: 16px; align-items: start; }
    .scene-card img { width: 88px; height: 88px; object-fit: cover; border-radius: 10px; }
    .stats-bar {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
      background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.08); border-radius: 14px; overflow: hidden;
    }
    .stats-bar article {
      background: rgba(16,35,63,.7); padding: 28px 18px; text-align: left;
    }
    .stats-bar .n { font-family: "Noto Serif SC", serif; font-size: 36px; color: #fff; white-space: nowrap; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .review { padding: 22px; }
    .stars { color: var(--gold); letter-spacing: 2px; font-size: 14px; }
    .news-list { display: grid; gap: 14px; }
    .news-item {
      display: grid; grid-template-columns: 160px 108px 1fr; gap: 16px; padding: 14px;
      align-items: center;
    }
    .news-item img { width: 160px; height: 96px; object-fit: cover; border-radius: 10px; }
    .news-item time { color: var(--gold); font-size: 13px; white-space: nowrap; }
    .guard-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .guard {
      padding: 18px 14px; text-align: left; min-height: 160px;
      border: 1px solid rgba(196,163,90,.35);
      box-shadow: inset 0 0 0 1px rgba(196,163,90,.12);
    }
    .guard svg { margin-bottom: 10px; }
    .topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .topic { min-height: 180px; padding: 24px; }
    .chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
    .chip {
      min-height: 44px; padding: 8px 14px; border-radius: 999px; cursor: pointer;
      border: 1px solid var(--glass-border); background: rgba(16,35,63,.5); color: var(--text);
      font-size: 14px;
    }
    .chip.on { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 12px rgba(62,208,247,.25); }
    .quick-ans { padding: 20px; min-height: 96px; color: var(--text-muted); font-size: 15px; }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; min-height: 52px; padding: 14px 48px 14px 18px;
      background: rgba(16,35,63,.55); color: var(--text); border: 0; cursor: pointer;
      position: relative; font-size: 16px;
    }
    .faq-item button::after {
      content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
      color: var(--gold); font-size: 20px;
    }
    .faq-item.open button::after { content: "–"; }
    .faq-item .ans {
      max-height: 0; overflow: hidden; transition: max-height .18s ease, padding .18s ease;
      color: var(--text-muted); font-size: 15px; padding: 0 18px;
    }
    .faq-item.open .ans { max-height: 240px; padding: 0 18px 16px; }
    .consult-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; align-items: start; }
    .form-box { padding: 26px; }
    label { display: block; font-size: 13px; color: var(--text-muted); margin: 0 0 6px; }
    .field { margin-bottom: 14px; }
    input, select, textarea {
      width: 100%; min-height: 44px; padding: 10px 12px;
      background: rgba(7,11,20,.65); color: var(--text);
      border: 1px solid rgba(255,255,255,.14); border-radius: 8px;
    }
    textarea { min-height: 110px; resize: vertical; }
    input:focus, select:focus, textarea:focus { border-color: var(--cyan); }
    .err { border-color: var(--danger) !important; }
    .err-msg { color: var(--danger); font-size: 12px; margin-top: 4px; display: none; }
    .check-row { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text-muted); }
    .check-row input { width: 18px; min-height: 18px; margin-top: 3px; }
    .form-ok {
      display: none; padding: 14px; border: 1px solid rgba(62,208,247,.4);
      color: var(--cyan); border-radius: 8px; margin-bottom: 12px;
    }
    .aside-contact { padding: 26px; }
    .aside-contact a { color: var(--cyan); }
    .site-footer {
      background: #05080f; border-top: 1px solid rgba(196,163,90,.2);
      padding: 48px 0 24px; font-size: 14px; color: var(--text-muted);
    }
    .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 28px; }
    .foot-grid a:hover { color: var(--text); }
    .foot-bottom {
      border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px;
      display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px;
    }
    .paper {
      background-image:
        linear-gradient(rgba(196,163,90,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(196,163,90,.045) 1px, transparent 1px);
      background-size: 28px 28px;
    }
    @media (max-width: 1024px) {
      .board-grid, .matrix, .six-grid, .hot-grid, .guard-grid { grid-template-columns: repeat(2, 1fr); }
      .matrix-cell:nth-child(4n) { border-right: 1px solid rgba(255,255,255,.08); }
      .matrix-cell:nth-child(2n) { border-right: 0; }
      .matrix-cell:nth-last-child(-n+4) { border-bottom: 1px solid rgba(255,255,255,.08); }
      .split, .compare-wrap, .consult-grid, .scene-card { grid-template-columns: 1fr; }
      .nav-links { display: none; }
      .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .news-item { grid-template-columns: 120px 1fr; }
      .news-item time { grid-column: 2; }
    }
    @media (max-width: 768px) {
      :root { --space-section: 64px; }
      .util-right { display: none; }
      .brand-name { font-size: 16px; }
      .board-grid, .hot-grid, .six-grid, .review-grid, .topic-grid, .case-points, .stats-bar, .guard-grid, .scene-grid {
        grid-template-columns: 1fr;
      }
      .matrix { grid-template-columns: 1fr; }
      .matrix-cell { border-right: 0; min-height: 0; }
      .hero-nav { right: 12px; bottom: 120px; }
      .micro-bar { flex-direction: column; gap: 6px; }
      .tl-item { min-width: 78%; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 24px, var(--container)); }
      .hero { min-height: 100svh; }
      .hero-inner { min-height: 100svh; padding-top: 24px; }
      h2 { font-size: 24px; }
      .metric .num, .stats-bar .n { font-size: 28px; }
      .news-item { grid-template-columns: 1fr; }
      .news-item img { width: 100%; height: 160px; }
      .foot-grid { grid-template-columns: 1fr; }
      .btn-glow, .btn-ghost { width: 100%; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      .hero-slide, .glass, .bar > i, .faq-item .ans { transition: none; }
    }