:root {
      --bg: #fdf6ef;
      --surface: #ffffff;
      --ink: #1f2937;
      --muted: #6b7280;
      --primary: #b45309;
      --primary-strong: #92400e;
      --secondary: #0f766e;
      --accent: #ef4444;
      --line: #e7d8ca;
      --shadow: 0 18px 40px rgba(24, 24, 24, 0.08);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
      background: var(--bg);
      color: var(--ink);
      line-height: 1.7;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    button {
      font-family: inherit;
    }

    .wrap {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .site-nav {
      position: sticky;
      top: 0;
      z-index: 99;
      background: rgba(253, 246, 239, 0.88);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(231, 216, 202, 0.8);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 14px 0;
    }

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

    .brand-icon {
      width: 40px;
      height: 40px;
      background: #fff;
      border-radius: 12px;
      display: grid;
      place-items: center;
      box-shadow: 0 10px 24px rgba(239, 68, 68, 0.16);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .brand-name {
      font-weight: 700;
      font-size: 18px;
    }

    .brand-tag {
      font-size: 12px;
      color: var(--muted);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .nav-link {
      font-size: 14px;
      padding: 6px 12px;
      border-radius: 999px;
      color: var(--muted);
      transition: all 0.2s ease;
    }

    .nav-link.active {
      background: rgba(180, 83, 9, 0.14);
      color: var(--primary-strong);
      font-weight: 600;
    }

    .nav-cta {
      margin-left: auto;
    }

    .nav-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      border-radius: 10px;
      padding: 6px;
    }

    .btn {
      border: none;
      border-radius: 999px;
      padding: 12px 22px;
      font-weight: 600;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 12px 24px rgba(180, 83, 9, 0.24);
    }

    .btn-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 16px 30px rgba(180, 83, 9, 0.28);
    }

    .btn-secondary {
      background: #fff;
      color: var(--secondary);
      border: 1px solid rgba(15, 118, 110, 0.25);
    }

    .hero {
      padding: 90px 0 70px;
      background: radial-gradient(circle at top, #fff7ed 0%, #fdf6ef 45%, #f8efe6 100%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .hero-eyebrow {
      font-size: 14px;
      color: var(--secondary);
      font-weight: 600;
      letter-spacing: 0.08em;
    }

    .hero-title {
      font-size: 44px;
      margin: 10px 0 18px;
      line-height: 1.2;
    }

    .hero-sub {
      color: var(--muted);
      font-size: 16px;
      margin-bottom: 16px;
    }

    .hero-note {
      font-weight: 600;
      color: var(--primary-strong);
      margin-bottom: 22px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 26px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .stat-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
      padding: 14px;
      box-shadow: var(--shadow);
    }

    .stat-num {
      font-size: 20px;
      font-weight: 700;
      color: var(--secondary);
    }

    .stat-label {
      font-size: 12px;
      color: var(--muted);
    }

    .hero-board {
      background: #fff;
      border-radius: 24px;
      padding: 24px;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .board-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
    }

    .board-pill {
      background: rgba(15, 118, 110, 0.12);
      color: var(--secondary);
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 12px;
    }

    .board-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .board-card {
      border: 1px solid rgba(231, 216, 202, 0.8);
      border-radius: 14px;
      padding: 14px;
      display: flex;
      align-items: center;
      gap: 12px;
      background: #fffaf4;
    }

    .board-title {
      font-weight: 600;
    }

    .board-desc {
      font-size: 12px;
      color: var(--muted);
    }

    .sec {
      padding: 80px 0;
    }

    .sec.alt {
      background: #fff;
    }

    .sec-head {
      margin-bottom: 32px;
    }

    .sec-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.12em;
      color: var(--primary-strong);
    }

    .sec-title {
      font-size: 32px;
      margin: 10px 0 12px;
    }

    .sec-sub {
      color: var(--muted);
      max-width: 820px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .feature-card {
      background: #fff;
      border-radius: 20px;
      padding: 22px;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: rgba(180, 83, 9, 0.1);
      color: var(--primary-strong);
    }

    .feature-title {
      font-size: 18px;
      font-weight: 700;
    }

    .feature-desc {
      color: var(--muted);
      font-size: 14px;
    }

    .story-grid {
      display: grid;
      gap: 24px;
      margin-top: 28px;
    }

    .story-row {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 28px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 22px;
      padding: 24px;
      box-shadow: var(--shadow);
      align-items: center;
    }

    .story-row.reverse {
      grid-template-columns: 0.9fr 1.1fr;
    }

    .story-row.reverse .story-text {
      order: 2;
    }

    .story-row.reverse .story-visual {
      order: 1;
    }

    .story-title {
      font-size: 22px;
      margin-bottom: 10px;
    }

    .story-list {
      padding-left: 18px;
      margin: 12px 0 0;
      color: var(--muted);
    }

    .story-visual {
      background: #fff7ed;
      border-radius: 18px;
      padding: 20px;
      border: 1px dashed rgba(180, 83, 9, 0.3);
    }

    .platform-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }

    .platform-card {
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--line);
      padding: 22px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      box-shadow: var(--shadow);
    }

    .platform-icon {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: rgba(15, 118, 110, 0.1);
      color: var(--secondary);
      display: grid;
      place-items: center;
    }

    .platform-meta {
      font-size: 13px;
      color: var(--muted);
    }

    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: #fff;
      border-radius: 20px;
      padding: 22px;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .review-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .review-name {
      font-weight: 600;
    }

    .review-stars {
      display: flex;
      gap: 4px;
      color: #f59e0b;
    }

    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 32px;
    }

    .security-card {
      background: #fff;
      border-radius: 18px;
      padding: 18px;
      border: 1px solid var(--line);
      display: flex;
      gap: 14px;
      align-items: flex-start;
      box-shadow: var(--shadow);
    }

    .security-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(239, 68, 68, 0.12);
      color: var(--accent);
      display: grid;
      place-items: center;
      flex-shrink: 0;
    }

    .table-wrap {
      overflow-x: auto;
      background: #fff;
      border-radius: 20px;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 14px;
    }

    th, td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--line);
      text-align: left;
    }

    th {
      background: #fff7ed;
      color: var(--primary-strong);
    }

    .yes {
      color: var(--secondary);
      font-weight: 600;
    }

    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .price-card {
      background: #fff;
      border-radius: 22px;
      padding: 26px;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .price-tag {
      display: inline-flex;
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 12px;
      background: rgba(15, 118, 110, 0.12);
      color: var(--secondary);
      font-weight: 600;
    }

    .price-title {
      font-size: 20px;
      font-weight: 700;
    }

    .price-value {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary-strong);
    }

    .price-list {
      padding-left: 18px;
      color: var(--muted);
      margin: 0;
    }

    .faq-list {
      display: grid;
      gap: 16px;
    }

    .faq-item {
      background: #fff;
      border-radius: 18px;
      border: 1px solid var(--line);
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    .faq-q {
      width: 100%;
      background: transparent;
      border: none;
      text-align: left;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 600;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
    }

    .faq-q svg {
      transition: transform 0.2s ease;
    }

    .faq-item.open .faq-q svg {
      transform: rotate(180deg);
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease;
      padding: 0 20px;
      color: var(--muted);
    }

    .faq-item.open .faq-a {
      max-height: 240px;
      padding-bottom: 18px;
    }

    .site-footer {
      padding: 30px 0 40px;
      text-align: center;
      color: var(--muted);
      font-size: 14px;
    }

    .svg-icon {
      width: 22px;
      height: 22px;
    }

    @keyframes spin {
      from { transform: rotate(0deg); }
      to { transform: rotate(360deg); }
    }

    @media (max-width: 1080px) {
      .hero-grid,
      .story-row,
      .story-row.reverse {
        grid-template-columns: 1fr;
      }

      .feature-grid,
      .platform-grid,
      .review-grid,
      .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
      }

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

      .nav-cta {
        display: none;
      }
    }

    @media (max-width: 820px) {
      .nav-toggle {
        display: inline-flex;
      }

      .nav-links {
        position: absolute;
        top: 64px;
        right: 20px;
        background: #fff;
        border-radius: 16px;
        border: 1px solid var(--line);
        padding: 14px;
        flex-direction: column;
        display: none;
        min-width: 200px;
        box-shadow: var(--shadow);
      }

      .nav-links.show {
        display: flex;
      }

      .feature-grid,
      .platform-grid,
      .review-grid,
      .pricing-grid,
      .security-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 600px) {
      .hero-title {
        font-size: 32px;
      }

      .hero-actions {
        flex-direction: column;
        align-items: flex-start;
      }
    }