/* roulang page: index */
:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --primary-soft: #e8f0ff;
      --secondary: #0f172a;
      --accent: #38bdf8;
      --success: #16a34a;
      --warning: #f59e0b;
      --danger: #ef4444;
      --bg: #f7faff;
      --bg-2: #eef5ff;
      --surface: #ffffff;
      --surface-soft: #f8fbff;
      --text: #111827;
      --muted: #64748b;
      --muted-2: #94a3b8;
      --border: #dbe7f6;
      --border-strong: #bfd3ec;
      --shadow-sm: 0 8px 22px rgba(15, 23, 42, .06);
      --shadow-md: 0 18px 45px rgba(37, 99, 235, .12);
      --shadow-lg: 0 28px 70px rgba(15, 23, 42, .16);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --nav-h: 76px;
      --ease: all .24s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      overflow-x: hidden;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      line-height: 1.75;
      background:
        radial-gradient(circle at top left, rgba(56, 189, 248, .18), transparent 34rem),
        radial-gradient(circle at 85% 8%, rgba(37, 99, 235, .15), transparent 30rem),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 42%, #ffffff 100%);
      padding-bottom: 78px;
      min-width: 320px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ease);
    }

    a:hover {
      color: var(--primary);
    }

    img, svg {
      max-width: 100%;
      display: block;
    }

    button, input, select, textarea {
      font: inherit;
    }

    ::selection {
      background: rgba(37, 99, 235, .16);
      color: var(--secondary);
    }

    :focus-visible {
      outline: 3px solid rgba(37, 99, 235, .24);
      outline-offset: 3px;
      border-radius: 10px;
    }

    .container-page {
      width: min(1180px, calc(100% - 32px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, .82);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(219, 231, 246, .82);
    }

    .navbar-shell {
      min-height: var(--nav-h);
      display: flex;
      align-items: center;
      gap: 24px;
      padding: 12px 0;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 900;
      color: var(--secondary);
      letter-spacing: -.03em;
      white-space: nowrap;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 14px 30px rgba(37, 99, 235, .22);
      font-weight: 950;
    }

    .brand-title {
      font-size: 18px;
      line-height: 1.15;
    }

    .brand-sub {
      display: block;
      font-size: 11px;
      color: var(--muted);
      font-weight: 700;
      letter-spacing: .08em;
      margin-top: 2px;
    }

    .nav-center {
      display: flex;
      align-items: center;
      justify-content: center;
      flex: 1;
    }

    .nav-list {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin: 0;
      padding: 6px;
      list-style: none;
      background: rgba(248, 251, 255, .88);
      border: 1px solid var(--border);
      border-radius: 999px;
      box-shadow: var(--shadow-sm);
    }

    .nav-link-custom {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 8px 18px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 800;
    }

    .nav-link-custom:hover,
    .nav-link-custom.active {
      color: var(--primary);
      background: #fff;
      box-shadow: 0 8px 18px rgba(37, 99, 235, .10);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .command-search {
      width: 236px;
      display: flex;
      align-items: center;
      gap: 8px;
      height: 42px;
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 14px;
      padding: 0 12px;
      color: var(--muted);
      box-shadow: 0 8px 20px rgba(15, 23, 42, .04);
    }

    .command-search input {
      width: 100%;
      border: 0;
      outline: 0;
      color: var(--text);
      background: transparent;
      font-size: 13px;
    }

    .command-search kbd {
      border: 1px solid var(--border);
      background: var(--surface-soft);
      color: var(--muted-2);
      border-radius: 8px;
      font-size: 11px;
      padding: 2px 6px;
      box-shadow: none;
    }

    .nav-shortcut {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 42px;
      padding: 0 14px;
      border: 1px solid var(--border);
      border-radius: 14px;
      background: #fff;
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
      box-shadow: var(--shadow-sm);
    }

    .nav-shortcut:hover {
      transform: translateY(-1px);
      color: var(--primary);
      border-color: rgba(37, 99, 235, .28);
    }

    .btn-brand {
      --bs-btn-padding-x: 20px;
      --bs-btn-padding-y: 10px;
      --bs-btn-border-radius: 999px;
      --bs-btn-font-weight: 900;
      --bs-btn-color: #fff;
      --bs-btn-bg: var(--primary);
      --bs-btn-border-color: var(--primary);
      --bs-btn-hover-color: #fff;
      --bs-btn-hover-bg: var(--primary-dark);
      --bs-btn-hover-border-color: var(--primary-dark);
      --bs-btn-active-bg: #1e40af;
      box-shadow: 0 14px 28px rgba(37, 99, 235, .24);
      transition: var(--ease);
    }

    .btn-brand:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(37, 99, 235, .30);
    }

    .btn-soft {
      --bs-btn-padding-x: 18px;
      --bs-btn-padding-y: 10px;
      --bs-btn-border-radius: 999px;
      --bs-btn-font-weight: 900;
      --bs-btn-color: var(--primary);
      --bs-btn-bg: var(--primary-soft);
      --bs-btn-border-color: rgba(37, 99, 235, .12);
      --bs-btn-hover-color: var(--primary-dark);
      --bs-btn-hover-bg: #dceaff;
      --bs-btn-hover-border-color: rgba(37, 99, 235, .22);
      transition: var(--ease);
    }

    .btn-outline-brand {
      --bs-btn-padding-x: 18px;
      --bs-btn-padding-y: 10px;
      --bs-btn-border-radius: 999px;
      --bs-btn-font-weight: 900;
      --bs-btn-color: var(--secondary);
      --bs-btn-bg: #fff;
      --bs-btn-border-color: var(--border-strong);
      --bs-btn-hover-color: var(--primary);
      --bs-btn-hover-bg: var(--surface-soft);
      --bs-btn-hover-border-color: rgba(37, 99, 235, .35);
      transition: var(--ease);
      box-shadow: var(--shadow-sm);
    }

    .mobile-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      border: 1px solid var(--border);
      background: #fff;
      color: var(--secondary);
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-sm);
    }

    .mobile-menu {
      display: none;
      padding: 0 0 16px;
    }

    .hero-section {
      padding: 72px 0 42px;
    }

    .hero-panel {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(191, 211, 236, .84);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(120deg, rgba(255,255,255,.96) 0%, rgba(247,250,255,.96) 55%, rgba(232,240,255,.92) 100%);
      box-shadow: var(--shadow-lg);
      padding: clamp(28px, 5vw, 58px);
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: auto -90px -140px auto;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(56, 189, 248, .24), transparent 64%);
      pointer-events: none;
    }

    .hero-topline {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      margin-bottom: 22px;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      border: 1px solid rgba(37, 99, 235, .12);
      font-size: 13px;
      font-weight: 900;
      white-space: nowrap;
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 0 5px rgba(22, 163, 74, .13);
    }

    .hero-title {
      max-width: 860px;
      margin: 0 0 18px;
      font-size: clamp(34px, 6vw, 68px);
      line-height: 1.04;
      letter-spacing: -.06em;
      font-weight: 950;
      color: var(--secondary);
    }

    .hero-title span {
      color: var(--primary);
    }

    .hero-desc {
      max-width: 760px;
      margin: 0;
      color: #43536b;
      font-size: clamp(16px, 2vw, 19px);
      line-height: 1.9;
    }

    .hero-action-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      margin-top: 30px;
    }

    .hero-stage {
      margin-top: 34px;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 22px;
      align-items: stretch;
      position: relative;
      z-index: 1;
    }

    .release-card {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .86);
      box-shadow: var(--shadow-md);
      padding: 24px;
    }

    .release-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 18px;
    }

    .release-header strong {
      color: var(--secondary);
      font-size: 18px;
      letter-spacing: -.02em;
    }

    .countdown-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }

    .count-ring {
      position: relative;
      min-height: 132px;
      border-radius: 24px;
      background:
        conic-gradient(from 0deg, var(--primary) var(--p), #e7eef9 0);
      padding: 8px;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.65);
    }

    .count-ring-inner {
      height: 100%;
      border-radius: 19px;
      background: #fff;
      display: grid;
      place-items: center;
      text-align: center;
      padding: 12px 8px;
    }

    .count-ring b {
      display: block;
      font-size: clamp(24px, 3.2vw, 38px);
      line-height: 1;
      color: var(--secondary);
      letter-spacing: -.04em;
    }

    .count-ring small {
      display: block;
      margin-top: 8px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
    }

    .selling-points {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .selling-points li {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 12px;
      align-items: flex-start;
      padding: 15px;
      border: 1px solid var(--border);
      border-radius: 18px;
      background: #fff;
      transition: var(--ease);
    }

    .selling-points li:hover {
      transform: translateY(-2px);
      border-color: rgba(37, 99, 235, .26);
      box-shadow: var(--shadow-sm);
    }

    .point-icon {
      width: 32px;
      height: 32px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: var(--primary-soft);
      font-weight: 950;
    }

    .selling-points h3 {
      margin: 0 0 2px;
      font-size: 15px;
      font-weight: 950;
      color: var(--secondary);
    }

    .selling-points p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }

    .section {
      padding: 56px 0;
    }

    .section-tight {
      padding: 34px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 950;
      letter-spacing: .06em;
    }

    .section-title {
      margin: 0;
      color: var(--secondary);
      font-size: clamp(26px, 3.4vw, 42px);
      font-weight: 950;
      letter-spacing: -.05em;
      line-height: 1.16;
    }

    .section-desc {
      max-width: 680px;
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.9;
    }

    .section-more {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-weight: 950;
      white-space: nowrap;
    }

    .section-more:hover {
      gap: 12px;
      color: var(--primary-dark);
    }

    .tier-ladder {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 22px;
    }

    .ladder-card {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: var(--surface);
      box-shadow: var(--shadow-sm);
      padding: 24px;
      transition: var(--ease);
    }

    .ladder-card:hover,
    .pricing-card:hover,
    .category-card:hover,
    .rank-panel:hover,
    .news-panel:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(37, 99, 235, .28);
    }

    .ladder-feature {
      min-height: 100%;
      background:
        linear-gradient(135deg, rgba(37, 99, 235, .96), rgba(56, 189, 248, .88));
      color: #fff;
      border: 0;
    }

    .ladder-feature .section-kicker,
    .ladder-feature .section-title,
    .ladder-feature .section-desc {
      color: #fff;
    }

    .ladder-feature .section-desc {
      color: rgba(255,255,255,.85);
    }

    .ladder-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .meta-chip {
      padding: 8px 11px;
      border-radius: 999px;
      background: rgba(255,255,255,.16);
      border: 1px solid rgba(255,255,255,.24);
      color: #fff;
      font-size: 13px;
      font-weight: 850;
    }

    .ladder-steps {
      display: grid;
      gap: 14px;
    }

    .step-row {
      display: grid;
      grid-template-columns: 72px 1fr auto;
      align-items: center;
      gap: 16px;
      padding: 17px;
      border: 1px solid var(--border);
      border-radius: 20px;
      background: #fff;
      transition: var(--ease);
    }

    .step-row:hover {
      background: var(--surface-soft);
    }

    .step-row strong {
      color: var(--secondary);
      font-size: 17px;
      font-weight: 950;
    }

    .step-row p {
      margin: 3px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .step-number {
      width: 56px;
      height: 56px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      background: var(--primary-soft);
      color: var(--primary);
      font-size: 21px;
      font-weight: 950;
    }

    .discount {
      color: var(--success);
      font-weight: 950;
      white-space: nowrap;
    }

    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      align-items: stretch;
    }

    .pricing-card {
      position: relative;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: var(--surface);
      box-shadow: var(--shadow-sm);
      padding: 24px;
      transition: var(--ease);
      overflow: hidden;
    }

    .pricing-card.featured {
      border-color: rgba(37, 99, 235, .36);
      box-shadow: var(--shadow-md);
    }

    .pricing-card.featured::before {
      content: "推荐";
      position: absolute;
      top: 18px;
      right: -36px;
      width: 130px;
      text-align: center;
      transform: rotate(35deg);
      background: var(--primary);
      color: #fff;
      font-size: 12px;
      font-weight: 950;
      padding: 5px 0;
    }

    .pricing-name {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      margin-bottom: 12px;
    }

    .pricing-name h3 {
      margin: 0;
      color: var(--secondary);
      font-size: 22px;
      font-weight: 950;
    }

    .pricing-note {
      display: inline-flex;
      padding: 4px 9px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary);
      font-size: 12px;
      font-weight: 900;
    }

    .price {
      margin: 12px 0 10px;
      color: var(--secondary);
      font-size: 36px;
      font-weight: 950;
      letter-spacing: -.05em;
    }

    .price small {
      font-size: 14px;
      color: var(--muted);
      letter-spacing: 0;
      font-weight: 800;
    }

    .pricing-card p {
      color: var(--muted);
      margin-bottom: 16px;
    }

    .check-list {
      display: grid;
      gap: 10px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 9px;
      color: #42526a;
      font-size: 14px;
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 auto;
      width: 22px;
      height: 22px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      background: rgba(22, 163, 74, .10);
      color: var(--success);
      font-size: 13px;
      font-weight: 950;
      margin-top: 2px;
    }

    .assurance-strip {
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      background: #fff;
      box-shadow: var(--shadow-md);
      padding: 18px;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }

    .assurance-item {
      padding: 18px;
      border-radius: 22px;
      background: var(--surface-soft);
      border: 1px solid rgba(219, 231, 246, .82);
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 12px;
      align-items: flex-start;
    }

    .assurance-icon {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: var(--primary-soft);
      font-weight: 950;
      font-size: 18px;
    }

    .assurance-item strong {
      display: block;
      color: var(--secondary);
      font-size: 15px;
      font-weight: 950;
      margin-bottom: 2px;
    }

    .assurance-item span {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
    }

    .category-scroll {
      display: flex;
      gap: 14px;
      overflow-x: auto;
      padding: 4px 2px 16px;
      scrollbar-width: thin;
      scrollbar-color: var(--border-strong) transparent;
    }

    .category-card {
      flex: 0 0 245px;
      min-height: 166px;
      border: 1px solid var(--border);
      border-radius: 24px;
      background: #fff;
      box-shadow: var(--shadow-sm);
      padding: 20px;
      transition: var(--ease);
    }

    .category-card .tag-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 18px;
    }

    .tag {
      display: inline-flex;
      padding: 5px 9px;
      border-radius: 999px;
      background: var(--surface-soft);
      border: 1px solid var(--border);
      color: var(--muted);
      font-size: 12px;
      font-weight: 850;
    }

    .category-card h3 {
      margin: 0 0 8px;
      color: var(--secondary);
      font-size: 18px;
      font-weight: 950;
    }

    .category-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .rank-layout {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 22px;
      align-items: start;
    }

    .rank-panel,
    .news-panel,
    .faq-card {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: #fff;
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }

    .rank-panel {
      overflow: hidden;
    }

    .rank-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      margin: 0;
    }

    .rank-table th,
    .rank-table td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--border);
      vertical-align: middle;
    }

    .rank-table th {
      color: var(--muted);
      font-size: 13px;
      font-weight: 950;
      background: var(--surface-soft);
    }

    .rank-table tr:last-child td {
      border-bottom: 0;
    }

    .rank-index {
      width: 34px;
      height: 34px;
      display: inline-grid;
      place-items: center;
      border-radius: 12px;
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 950;
    }

    .rank-title {
      display: block;
      color: var(--secondary);
      font-weight: 950;
      line-height: 1.35;
    }

    .rank-sub {
      display: block;
      color: var(--muted);
      font-size: 13px;
      margin-top: 3px;
    }

    .trend-up {
      color: var(--success);
      font-weight: 950;
      white-space: nowrap;
    }

    .insight-card {
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg, #0f172a, #1e3a8a 58%, #2563eb);
      color: #fff;
      padding: 26px;
      box-shadow: var(--shadow-lg);
      min-height: 100%;
    }

    .insight-card h3 {
      margin: 0 0 12px;
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .insight-card p {
      margin: 0;
      color: rgba(255,255,255,.80);
    }

    .insight-metrics {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 22px;
    }

    .metric-box {
      padding: 15px;
      border-radius: 18px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.18);
    }

    .metric-box b {
      display: block;
      font-size: 26px;
      line-height: 1;
      font-weight: 950;
    }

    .metric-box span {
      display: block;
      margin-top: 7px;
      color: rgba(255,255,255,.78);
      font-size: 13px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1.28fr .72fr;
      gap: 22px;
      align-items: stretch;
    }

    .news-panel {
      padding: 10px;
    }

    .news-list {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .news-item a {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px;
      border-radius: 18px;
      transition: var(--ease);
    }

    .news-item a:hover {
      background: var(--surface-soft);
      transform: translateX(2px);
    }

    .news-date {
      width: 58px;
      padding: 8px 6px;
      border-radius: 16px;
      background: var(--primary-soft);
      color: var(--primary);
      text-align: center;
      font-size: 12px;
      font-weight: 950;
      line-height: 1.25;
    }

    .news-title {
      display: block;
      color: var(--secondary);
      font-weight: 950;
      line-height: 1.45;
      margin-bottom: 3px;
    }

    .news-summary {
      display: block;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .news-arrow {
      color: var(--muted-2);
      font-weight: 950;
    }

    .recommend-box {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: #fff;
      box-shadow: var(--shadow-sm);
      padding: 24px;
    }

    .recommend-box h3 {
      margin: 0 0 12px;
      font-size: 21px;
      color: var(--secondary);
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .recommend-list {
      display: grid;
      gap: 12px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .recommend-list li {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 0;
      border-bottom: 1px dashed var(--border);
      color: var(--muted);
      font-size: 14px;
    }

    .recommend-list li:last-child {
      border-bottom: 0;
    }

    .recommend-list strong {
      color: var(--secondary);
      font-weight: 950;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
      align-items: start;
    }

    .faq-card {
      padding: 24px;
    }

    .accordion {
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      border: 1px solid var(--border) !important;
      border-radius: 20px !important;
      overflow: hidden;
      background: #fff;
      box-shadow: var(--shadow-sm);
    }

    .accordion-button {
      font-weight: 950;
      color: var(--secondary);
      background: #fff;
      padding: 18px 20px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--primary);
      background: var(--surface-soft);
    }

    .accordion-button::after {
      width: 18px;
      height: 18px;
      background-size: 18px;
    }

    .accordion-body {
      color: var(--muted);
      padding: 0 20px 20px;
      line-height: 1.85;
      font-size: 15px;
    }

    .limited-section {
      padding: 56px 0 86px;
    }

    .limited-panel {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-xl);
      padding: clamp(28px, 5vw, 54px);
      background:
        linear-gradient(135deg, rgba(15, 23, 42, .98), rgba(30, 64, 175, .92)),
        radial-gradient(circle at 80% 10%, rgba(56, 189, 248, .30), transparent 34rem);
      color: #fff;
      box-shadow: var(--shadow-lg);
    }

    .limited-panel::after {
      content: "";
      position: absolute;
      inset: 18px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: calc(var(--radius-xl) - 12px);
      pointer-events: none;
    }

    .limited-content {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
    }

    .limited-panel .section-kicker,
    .limited-panel .section-title {
      color: #fff;
    }

    .limited-panel .section-desc {
      color: rgba(255,255,255,.78);
    }

    .lead-form {
      display: grid;
      grid-template-columns: minmax(220px, 320px) auto;
      gap: 10px;
      padding: 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.18);
      min-width: min(100%, 500px);
    }

    .lead-form input {
      border: 0;
      outline: 0;
      min-height: 48px;
      border-radius: 999px;
      padding: 0 18px;
      color: #fff;
      background: rgba(255,255,255,.12);
    }

    .lead-form input::placeholder {
      color: rgba(255,255,255,.62);
    }

    .lead-form .btn {
      white-space: nowrap;
      box-shadow: none;
    }

    .form-hint {
      margin-top: 12px;
      color: rgba(255,255,255,.64);
      font-size: 13px;
    }

    .site-footer {
      padding: 44px 0 36px;
      background: #0b1220;
      color: rgba(255,255,255,.76);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
      color: #fff;
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .footer-mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
    }

    .footer-text {
      max-width: 520px;
      margin: 0;
      color: rgba(255,255,255,.62);
      font-size: 14px;
      line-height: 1.9;
    }

    .footer-col h3 {
      margin: 0 0 12px;
      color: #fff;
      font-size: 15px;
      font-weight: 950;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      color: rgba(255,255,255,.62);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      transform: translateX(2px);
    }

    .footer-bottom {
      margin-top: 28px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.10);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      color: rgba(255,255,255,.52);
      font-size: 13px;
    }

    .fixed-cta {
      position: fixed;
      left: 50%;
      bottom: 16px;
      transform: translateX(-50%);
      width: min(1040px, calc(100% - 28px));
      z-index: 1050;
      border: 1px solid rgba(191, 211, 236, .88);
      border-radius: 999px;
      background: rgba(255,255,255,.90);
      backdrop-filter: blur(18px);
      box-shadow: 0 18px 50px rgba(15, 23, 42, .18);
      padding: 10px 12px 10px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .fixed-cta-text {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .fixed-cta-badge {
      flex: 0 0 auto;
      padding: 6px 10px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary);
      font-size: 12px;
      font-weight: 950;
    }

    .fixed-cta-text strong {
      display: block;
      color: var(--secondary);
      font-size: 14px;
      line-height: 1.35;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .fixed-cta-text span {
      display: block;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.35;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .age-alert {
      border: 1px solid rgba(245, 158, 11, .22);
      background: rgba(255, 251, 235, .86);
      color: #8a5a08;
      padding: 12px 14px;
      border-radius: 18px;
      font-size: 14px;
      line-height: 1.7;
      margin-top: 24px;
    }

    @media (max-width: 1024px) {
      .command-search {
        display: none;
      }

      .hero-stage,
      .tier-ladder,
      .rank-layout,
      .news-layout,
      .faq-grid,
      .limited-content {
        grid-template-columns: 1fr;
      }

      .assurance-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .lead-form {
        width: 100%;
        max-width: 620px;
      }
    }

    @media (max-width: 768px) {
      body {
        padding-bottom: 96px;
      }

      .navbar-shell {
        justify-content: space-between;
      }

      .nav-center,
      .nav-actions {
        display: none;
      }

      .mobile-toggle {
        display: inline-flex;
      }

      .mobile-menu.open {
        display: block;
      }

      .mobile-menu-inner {
        display: grid;
        gap: 10px;
        padding: 14px;
        border: 1px solid var(--border);
        border-radius: 22px;
        background: #fff;
        box-shadow: var(--shadow-md);
      }

      .mobile-menu-inner .nav-link-custom {
        justify-content: center;
        background: var(--surface-soft);
      }

      .mobile-search {
        display: flex;
        width: 100%;
      }

      .hero-section {
        padding-top: 34px;
      }

      .hero-panel {
        border-radius: 28px;
      }

      .hero-topline {
        gap: 8px;
      }

      .hero-action-row .btn {
        width: 100%;
      }

      .countdown-grid,
      .pricing-grid {
        grid-template-columns: 1fr;
      }

      .step-row {
        grid-template-columns: auto 1fr;
      }

      .step-row .discount {
        grid-column: 2;
      }

      .assurance-strip {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: block;
      }

      .section-more {
        margin-top: 12px;
      }

      .news-item a {
        grid-template-columns: auto 1fr;
      }

      .news-arrow {
        display: none;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .lead-form {
        grid-template-columns: 1fr;
        border-radius: 24px;
      }

      .lead-form input,
      .lead-form .btn {
        width: 100%;
      }

      .fixed-cta {
        border-radius: 24px;
        align-items: stretch;
        flex-direction: column;
        padding: 12px;
      }

      .fixed-cta .btn {
        width: 100%;
      }

      .fixed-cta-text {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .container-page {
        width: min(100% - 22px, 1180px);
      }

      .brand-title {
        font-size: 16px;
      }

      .brand-sub {
        display: none;
      }

      .hero-panel,
      .limited-panel {
        padding: 24px 18px;
      }

      .release-card,
      .ladder-card,
      .pricing-card,
      .recommend-box,
      .faq-card,
      .insight-card {
        padding: 18px;
      }

      .count-ring {
        min-height: 116px;
      }

      .category-card {
        flex-basis: 220px;
      }

      .rank-table th:nth-child(3),
      .rank-table td:nth-child(3) {
        display: none;
      }

      .footer-bottom {
        display: grid;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}