/* roulang page: index */
:root {
      --color-primary: #1d4ed8;
      --color-primary-dark: #173ea8;
      --color-primary-soft: #e8f0ff;
      --color-accent: #0f766e;
      --color-accent-soft: #e7f7f4;
      --color-warning: #f59e0b;
      --color-danger: #dc2626;
      --color-bg: #f7faff;
      --color-surface: #ffffff;
      --color-surface-2: #f1f5fb;
      --color-text: #152033;
      --color-muted: #637083;
      --color-border: #dce5f2;
      --shadow-sm: 0 8px 24px rgba(29, 78, 216, 0.08);
      --shadow-md: 0 18px 48px rgba(15, 35, 75, 0.12);
      --shadow-lg: 0 30px 80px rgba(15, 35, 75, 0.16);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --container: 1180px;
      --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-main);
      color: var(--color-text);
      background:
        radial-gradient(circle at 8% 8%, rgba(29, 78, 216, 0.10), transparent 32%),
        radial-gradient(circle at 88% 12%, rgba(15, 118, 110, 0.10), transparent 26%),
        linear-gradient(180deg, #fbfdff 0%, var(--color-bg) 48%, #ffffff 100%);
      line-height: 1.7;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: none;
    }

    :focus-visible {
      outline: 3px solid rgba(29, 78, 216, 0.25);
      outline-offset: 3px;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(220, 229, 242, 0.85);
      box-shadow: 0 12px 36px rgba(15, 35, 75, 0.05);
    }

    .nav {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      letter-spacing: 0;
      color: var(--color-text);
      min-width: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
      color: #fff;
      display: grid;
      place-items: center;
      font-size: 18px;
      box-shadow: var(--shadow-sm);
      flex: 0 0 auto;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
      min-width: 0;
    }

    .brand-title {
      font-size: 17px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 320px;
    }

    .brand-sub {
      margin-top: 4px;
      font-size: 12px;
      color: var(--color-muted);
      font-weight: 700;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 6px;
      border: 1px solid var(--color-border);
      background: rgba(247, 250, 255, 0.78);
      border-radius: 999px;
    }

    .nav-link {
      padding: 10px 16px;
      border-radius: 999px;
      color: var(--color-muted);
      font-size: 14px;
      font-weight: 800;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--color-primary);
      background: #fff;
      box-shadow: 0 8px 20px rgba(29, 78, 216, 0.08);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid var(--color-border);
      background: #fff;
      color: var(--color-muted);
      border-radius: 999px;
      padding: 9px 13px;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-accent);
      box-shadow: 0 0 0 5px rgba(15, 118, 110, 0.12);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      border: 1px solid var(--color-border);
      background: #fff;
      color: var(--color-text);
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }

    .menu-toggle span {
      width: 18px;
      height: 2px;
      border-radius: 99px;
      background: currentColor;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 900;
      font-size: 14px;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
      white-space: nowrap;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--color-primary), #2563eb);
      box-shadow: 0 16px 34px rgba(29, 78, 216, 0.25);
    }

    .btn-primary:hover {
      box-shadow: 0 22px 44px rgba(29, 78, 216, 0.32);
    }

    .btn-secondary {
      color: var(--color-primary);
      background: #fff;
      border-color: var(--color-border);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      border-color: rgba(29, 78, 216, 0.32);
      box-shadow: var(--shadow-md);
    }

    .btn-ghost {
      color: var(--color-muted);
      background: rgba(255, 255, 255, 0.66);
      border-color: var(--color-border);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      border-radius: 999px;
      padding: 8px 12px;
      font-size: 13px;
      font-weight: 900;
      color: var(--color-primary);
      background: var(--color-primary-soft);
      border: 1px solid rgba(29, 78, 216, 0.14);
    }

    .badge.green {
      color: var(--color-accent);
      background: var(--color-accent-soft);
      border-color: rgba(15, 118, 110, 0.16);
    }

    .badge.warn {
      color: #975a05;
      background: #fff7e6;
      border-color: rgba(245, 158, 11, 0.24);
    }

    .hero {
      padding: 72px 0 50px;
      overflow: hidden;
    }

    .hero-stage {
      position: relative;
      display: grid;
      grid-template-columns: minmax(190px, 1fr) minmax(360px, 1.35fr) minmax(190px, 1fr);
      gap: 24px;
      align-items: center;
    }

    .hero-copy {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .hero h1 {
      margin-top: 18px;
      font-size: clamp(34px, 5vw, 64px);
      line-height: 1.06;
      letter-spacing: 0;
      color: #111827;
      max-width: 820px;
    }

    .hero-desc {
      margin-top: 18px;
      color: var(--color-muted);
      font-size: 17px;
    }

    .hero-actions {
      margin-top: 26px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .value-rail {
      display: grid;
      gap: 14px;
    }

    .value-chip {
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid var(--color-border);
      border-radius: 18px;
      padding: 16px;
      box-shadow: var(--shadow-sm);
    }

    .value-chip strong {
      display: block;
      font-size: 15px;
      color: var(--color-text);
      margin-bottom: 5px;
    }

    .value-chip span {
      display: block;
      color: var(--color-muted);
      font-size: 13px;
      line-height: 1.6;
    }

    .product-frame {
      position: relative;
      min-height: 490px;
      border-radius: 34px;
      padding: 18px;
      background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(241, 245, 251, 0.92)),
        radial-gradient(circle at 20% 20%, rgba(29, 78, 216, 0.20), transparent 34%);
      border: 1px solid rgba(220, 229, 242, 0.98);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }

    .stage-topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      padding: 10px 12px 16px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 800;
    }

    .window-dots {
      display: flex;
      gap: 7px;
    }

    .window-dots i {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: block;
      background: #cbd5e1;
    }

    .window-dots i:nth-child(1) { background: #ef4444; }
    .window-dots i:nth-child(2) { background: #f59e0b; }
    .window-dots i:nth-child(3) { background: #22c55e; }

    .dashboard {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 16px;
    }

    .panel {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: 22px;
      padding: 18px;
      box-shadow: var(--shadow-sm);
    }

    .panel-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
      font-size: 15px;
      font-weight: 900;
    }

    .mini-tabs {
      display: flex;
      gap: 7px;
      flex-wrap: wrap;
    }

    .mini-tab {
      padding: 6px 9px;
      border-radius: 999px;
      background: var(--color-surface-2);
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 800;
    }

    .mini-tab.active {
      color: var(--color-primary);
      background: var(--color-primary-soft);
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
    }

    .metric-card {
      border-radius: 16px;
      padding: 14px;
      background: linear-gradient(180deg, #f8fbff, #fff);
      border: 1px solid var(--color-border);
    }

    .metric-card b {
      display: block;
      font-size: 24px;
      line-height: 1.1;
      color: var(--color-primary);
    }

    .metric-card span {
      display: block;
      margin-top: 5px;
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 800;
    }

    .filter-stack {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .filter-line {
      height: 14px;
      border-radius: 99px;
      background: var(--color-surface-2);
      overflow: hidden;
    }

    .filter-line i {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    }

    .preview-list {
      display: grid;
      gap: 10px;
    }

    .preview-item {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 12px;
      border-radius: 16px;
      background: var(--color-surface-2);
      border: 1px solid var(--color-border);
    }

    .preview-item span {
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 800;
    }

    .preview-item strong {
      font-size: 13px;
    }

    .hero-note {
      position: absolute;
      left: 34px;
      right: 34px;
      bottom: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 14px 16px;
      border-radius: 18px;
      color: #fff;
      background: linear-gradient(135deg, rgba(21, 32, 51, 0.92), rgba(29, 78, 216, 0.88));
      box-shadow: 0 16px 40px rgba(15, 35, 75, 0.22);
    }

    .hero-note p {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.78);
    }

    .hero-note strong {
      display: block;
      font-size: 15px;
      color: #fff;
    }

    .section {
      padding: 58px 0;
    }

    .section.compact {
      padding: 34px 0;
    }

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

    .section-kicker {
      display: inline-flex;
      margin-bottom: 10px;
      font-size: 13px;
      font-weight: 900;
      color: var(--color-accent);
      letter-spacing: 0.08em;
    }

    .section-title {
      font-size: clamp(26px, 3.2vw, 42px);
      line-height: 1.2;
      color: #111827;
      letter-spacing: 0;
    }

    .section-desc {
      max-width: 560px;
      color: var(--color-muted);
      font-size: 16px;
    }

    .series-strip {
      display: grid;
      grid-template-columns: 1.2fr repeat(4, 1fr);
      gap: 14px;
      align-items: stretch;
    }

    .series-card {
      min-height: 128px;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      background: rgba(255, 255, 255, 0.88);
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
    }

    .series-card.featured {
      color: #fff;
      background: linear-gradient(135deg, #173ea8, #0f766e);
      border-color: transparent;
    }

    .series-card.featured .series-text,
    .series-card.featured .series-tag {
      color: rgba(255, 255, 255, 0.78);
    }

    .series-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .series-card h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }

    .series-text {
      color: var(--color-muted);
      font-size: 14px;
    }

    .series-tag {
      display: block;
      margin-top: 18px;
      color: var(--color-primary);
      font-size: 13px;
      font-weight: 900;
    }

    .hot-layout {
      display: grid;
      grid-template-columns: 0.92fr 1.08fr;
      gap: 22px;
      align-items: stretch;
    }

    .hot-feature {
      padding: 28px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(248,251,255,0.96)),
        radial-gradient(circle at 82% 18%, rgba(29, 78, 216, 0.12), transparent 28%);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-md);
    }

    .hot-feature h3 {
      margin: 18px 0 10px;
      font-size: 28px;
      line-height: 1.25;
    }

    .hot-feature p {
      color: var(--color-muted);
      font-size: 15px;
    }

    .hot-actions {
      margin-top: 22px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hot-list {
      display: grid;
      gap: 14px;
    }

    .resource-card {
      display: grid;
      grid-template-columns: 76px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }

    .resource-card:hover {
      transform: translateY(-3px);
      border-color: rgba(29, 78, 216, 0.24);
      box-shadow: var(--shadow-md);
    }

    .resource-icon {
      width: 76px;
      height: 64px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      color: var(--color-primary);
      background: var(--color-primary-soft);
      font-size: 28px;
      font-weight: 900;
    }

    .resource-card h3 {
      font-size: 18px;
      margin-bottom: 4px;
    }

    .resource-card p {
      color: var(--color-muted);
      font-size: 14px;
    }

    .resource-meta {
      display: grid;
      justify-items: end;
      gap: 8px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .filter-box {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }

    .search-field {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 52px;
      padding: 0 16px;
      border-radius: 16px;
      border: 1px solid var(--color-border);
      background: var(--color-surface-2);
      color: var(--color-muted);
    }

    .search-field input {
      width: 100%;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--color-text);
    }

    .search-field input::placeholder {
      color: #8b98aa;
    }

    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .filter-tag {
      padding: 9px 12px;
      border-radius: 999px;
      border: 1px solid var(--color-border);
      background: #fff;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 800;
    }

    .filter-tag:hover,
    .filter-tag.active {
      color: var(--color-primary);
      border-color: rgba(29, 78, 216, 0.28);
      background: var(--color-primary-soft);
    }

    .insight-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 22px;
    }

    .article-list {
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .article-row {
      display: grid;
      grid-template-columns: 126px 1fr;
      gap: 18px;
      padding: 20px;
      border-bottom: 1px solid var(--color-border);
    }

    .article-row:last-child {
      border-bottom: 0;
    }

    .article-date {
      color: var(--color-primary);
      font-weight: 900;
      font-size: 13px;
    }

    .article-row h3 {
      font-size: 18px;
      margin-bottom: 6px;
    }

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

    .article-row p {
      color: var(--color-muted);
      font-size: 14px;
    }

    .recommend-panel {
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, #12213a, #173ea8);
      color: #fff;
      padding: 26px;
      box-shadow: var(--shadow-md);
      position: sticky;
      top: 98px;
      align-self: start;
    }

    .recommend-panel h3 {
      font-size: 24px;
      line-height: 1.28;
      margin: 14px 0 10px;
    }

    .recommend-panel p {
      color: rgba(255, 255, 255, 0.78);
      font-size: 15px;
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin-top: 20px;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: rgba(255, 255, 255, 0.88);
      font-size: 14px;
    }

    .check-list li::before {
      content: "✓";
      width: 22px;
      height: 22px;
      flex: 0 0 22px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      font-weight: 900;
      line-height: 1;
    }

    .member-band {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      align-items: stretch;
    }

    .member-card,
    .timeline-card,
    .faq-card {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 26px;
      box-shadow: var(--shadow-sm);
    }

    .member-card h3,
    .timeline-card h3,
    .faq-card h3 {
      font-size: 24px;
      margin-bottom: 10px;
    }

    .member-card p,
    .timeline-card p,
    .faq-card p {
      color: var(--color-muted);
      font-size: 15px;
    }

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

    .benefit {
      padding: 14px;
      border-radius: 16px;
      border: 1px solid var(--color-border);
      background: var(--color-surface-2);
    }

    .benefit strong {
      display: block;
      margin-bottom: 4px;
      font-size: 15px;
    }

    .benefit span {
      color: var(--color-muted);
      font-size: 13px;
    }

    .people-row {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      overflow-x: auto;
      padding-bottom: 4px;
    }

    .person-card {
      min-width: 220px;
      padding: 20px;
      border-radius: var(--radius-md);
      background: #fff;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }

    .avatar {
      width: 58px;
      height: 58px;
      border-radius: 20px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--color-primary-soft), var(--color-accent-soft));
      color: var(--color-primary);
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .person-card h3 {
      font-size: 17px;
      margin-bottom: 6px;
    }

    .person-card p {
      color: var(--color-muted);
      font-size: 14px;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      margin-top: 24px;
    }

    .time-node {
      position: relative;
      padding: 18px;
      border-radius: 18px;
      border: 1px solid var(--color-border);
      background: var(--color-surface-2);
    }

    .time-node::before {
      content: "";
      position: absolute;
      top: -7px;
      left: 18px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--color-primary);
      box-shadow: 0 0 0 6px rgba(29, 78, 216, 0.12);
    }

    .time-node b {
      display: block;
      color: var(--color-primary);
      margin-bottom: 8px;
      font-size: 14px;
    }

    .time-node span {
      display: block;
      color: var(--color-muted);
      font-size: 13px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: 22px;
      align-items: start;
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      background: #fff;
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }

    .faq-item h3 {
      font-size: 17px;
      margin-bottom: 8px;
    }

    .faq-item p {
      color: var(--color-muted);
      font-size: 14px;
    }

    .cta {
      padding: 70px 0;
    }

    .cta-panel {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 24px;
      align-items: center;
      border-radius: 34px;
      padding: 34px;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(18, 33, 58, 0.96), rgba(29, 78, 216, 0.94)),
        radial-gradient(circle at 85% 20%, rgba(15, 118, 110, 0.38), transparent 34%);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .cta-panel h2 {
      font-size: clamp(28px, 3.6vw, 46px);
      line-height: 1.18;
      margin: 12px 0;
    }

    .cta-panel p {
      color: rgba(255, 255, 255, 0.78);
      max-width: 680px;
    }

    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 24px;
    }

    .cta .btn-secondary {
      color: #fff;
      background: rgba(255, 255, 255, 0.14);
      border-color: rgba(255, 255, 255, 0.22);
    }

    .signup-box {
      padding: 22px;
      border-radius: 24px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.18);
      backdrop-filter: blur(12px);
    }

    .signup-box label {
      display: block;
      color: rgba(255, 255, 255, 0.86);
      font-size: 13px;
      font-weight: 900;
      margin-bottom: 8px;
    }

    .signup-box input {
      width: 100%;
      min-height: 50px;
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: 16px;
      padding: 0 14px;
      color: #fff;
      background: rgba(255, 255, 255, 0.12);
      outline: 0;
    }

    .signup-box input::placeholder {
      color: rgba(255, 255, 255, 0.58);
    }

    .signup-box .btn {
      width: 100%;
      margin-top: 14px;
      background: #fff;
      color: var(--color-primary);
    }

    .site-footer {
      padding: 44px 0 26px;
      background: #0f172a;
      color: #fff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr 0.9fr;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      box-shadow: none;
    }

    .footer-text {
      max-width: 480px;
      color: rgba(255, 255, 255, 0.66);
      font-size: 14px;
    }

    .footer-block h3 {
      font-size: 15px;
      margin-bottom: 12px;
    }

    .footer-links {
      display: grid;
      gap: 9px;
      list-style: none;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.66);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
    }

    .footer-bottom {
      margin-top: 34px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      color: rgba(255, 255, 255, 0.56);
      font-size: 13px;
      flex-wrap: wrap;
    }

    @media (max-width: 1060px) {
      .hero-stage {
        grid-template-columns: 1fr;
      }

      .value-rail {
        grid-template-columns: repeat(3, 1fr);
      }

      .hero-copy {
        text-align: center;
      }

      .hero-copy .badge,
      .hero-actions {
        margin-left: auto;
        margin-right: auto;
        justify-content: center;
      }

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

      .hot-layout,
      .insight-grid,
      .member-band,
      .faq-wrap,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .recommend-panel {
        position: static;
      }

      .timeline {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 820px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav {
        min-height: 68px;
      }

      .brand-title {
        max-width: 220px;
      }

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

      .nav-links,
      .status-pill {
        display: none;
      }

      .nav-actions .btn {
        min-height: 42px;
        padding: 10px 14px;
      }

      .hero {
        padding-top: 44px;
      }

      .value-rail,
      .dashboard,
      .series-strip,
      .benefit-grid,
      .timeline,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .product-frame {
        min-height: auto;
        padding-bottom: 108px;
      }

      .section-head {
        display: block;
      }

      .section-desc {
        margin-top: 10px;
      }

      .filter-box,
      .resource-card,
      .article-row {
        grid-template-columns: 1fr;
      }

      .resource-meta {
        justify-items: start;
      }

      .hero-note {
        left: 18px;
        right: 18px;
        bottom: 18px;
        align-items: flex-start;
        flex-direction: column;
      }
    }

    @media (max-width: 540px) {
      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 12px;
      }

      .brand-title {
        font-size: 14px;
        max-width: 170px;
      }

      .brand-sub {
        display: none;
      }

      .nav-actions .btn {
        display: none;
      }

      .hero h1 {
        font-size: 32px;
      }

      .hero-copy,
      .hot-feature,
      .member-card,
      .timeline-card,
      .faq-card,
      .cta-panel {
        padding: 22px;
        border-radius: 24px;
      }

      .section {
        padding: 42px 0;
      }

      .hero-actions,
      .hot-actions,
      .cta-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .product-frame {
        border-radius: 24px;
      }

      .panel {
        padding: 14px;
      }

      .metric-card b {
        font-size: 21px;
      }

      .footer-bottom {
        display: block;
      }

      .footer-bottom span {
        display: block;
        margin-top: 8px;
      }
    }