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

    :root {
      --primary: #d6336c;
      --primary-dark: #b02a5a;
      --primary-light: #f8e6ed;
      --primary-soft: #fdf0f4;
      --accent: #ff7a9e;
      --text-main: #1e1e2a;
      --text-secondary: #4a4a5a;
      --text-light: #7a7a8a;
      --bg-white: #ffffff;
      --bg-soft: #fdf7f9;
      --bg-cream: #fff9fb;
      --border: #f0d8e2;
      --shadow-sm: 0 2px 8px rgba(214, 51, 108, 0.06);
      --shadow-md: 0 8px 24px rgba(214, 51, 108, 0.1);
      --shadow-lg: 0 16px 40px rgba(214, 51, 108, 0.14);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans SC', sans-serif;
      --container-max: 1200px;
      --container-pad: 24px;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      background-color: var(--bg-cream);
      background-image: radial-gradient(circle at 10% 20%, rgba(214, 51, 108, 0.03) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(255, 122, 158, 0.04) 0%, transparent 40%);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding-left: var(--container-pad);
      padding-right: var(--container-pad);
      width: 100%;
    }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      transition: box-shadow 0.25s ease;
    }

    .site-header.scrolled {
      box-shadow: var(--shadow-md);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 68px;
      gap: 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      text-decoration: none;
      color: var(--text-main);
    }

    .brand img {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
      white-space: nowrap;
    }

    .brand-name span {
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-secondary);
      text-decoration: none;
      border-radius: var(--radius-sm);
      transition: color 0.2s ease, background 0.2s ease;
      white-space: nowrap;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: var(--primary-soft);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 20px;
      font-size: 0.9rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 100px;
      text-decoration: none;
      white-space: nowrap;
      box-shadow: 0 4px 12px rgba(214, 51, 108, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-cta:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(214, 51, 108, 0.4);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 8px;
      cursor: pointer;
      color: var(--text-main);
      line-height: 1;
      font-size: 1.5rem;
    }

    .mobile-toggle:hover {
      background: var(--primary-soft);
    }

    /* ===== Hero 首屏 ===== */
    .hero {
      padding: 64px 0 80px;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -120px;
      right: -120px;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(214, 51, 108, 0.07) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero::after {
      content: '';
      position: absolute;
      bottom: -80px;
      left: -80px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(255, 122, 158, 0.05) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 1;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: var(--primary-soft);
      border: 1px solid var(--border);
      border-radius: 100px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
      animation: fadeInUp 0.6s ease both;
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      display: inline-block;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.85); }
    }

    .hero h1 {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -0.03em;
      color: var(--text-main);
      max-width: 820px;
      margin-bottom: 20px;
      animation: fadeInUp 0.6s ease 0.1s both;
    }

    .hero h1 em {
      font-style: normal;
      color: var(--primary);
      position: relative;
    }

    .hero p {
      font-size: 1.1rem;
      color: var(--text-secondary);
      max-width: 720px;
      margin-bottom: 32px;
      animation: fadeInUp 0.6s ease 0.2s both;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
      animation: fadeInUp 0.6s ease 0.3s both;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: 100px;
      text-decoration: none;
      cursor: pointer;
      border: none;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      line-height: 1.4;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 6px 20px rgba(214, 51, 108, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(214, 51, 108, 0.45);
    }

    .btn-outline {
      color: var(--primary);
      background: transparent;
      border: 2px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary-soft);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 10px 24px;
      font-size: 0.9rem;
    }

    /* 数据指标 */
    .metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 56px;
      width: 100%;
      max-width: 900px;
      animation: fadeInUp 0.6s ease 0.4s both;
    }

    .metric-item {
      padding: 24px 16px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      text-align: center;
    }

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

    .metric-value {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.2;
    }

    .metric-label {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-top: 4px;
      font-weight: 500;
    }

    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(24px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ===== 通用区块 ===== */
    .section {
      padding: 72px 0;
      position: relative;
    }

    .section-alt {
      background: var(--bg-white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--primary);
      background: var(--primary-soft);
      padding: 4px 14px;
      border-radius: 100px;
      margin-bottom: 12px;
    }

    .section-header h2 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      margin-bottom: 12px;
    }

    .section-header p {
      font-size: 1rem;
      color: var(--text-secondary);
    }

    /* 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .about-content h2 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .about-content p {
      color: var(--text-secondary);
      margin-bottom: 16px;
      font-size: 1rem;
      line-height: 1.75;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .highlight-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 16px;
      background: var(--bg-soft);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      transition: transform 0.2s ease;
    }

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

    .highlight-icon {
      width: 36px;
      height: 36px;
      min-width: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
    }

    .highlight-item h3 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .highlight-item p {
      font-size: 0.85rem;
      color: var(--text-light);
      margin: 0;
      line-height: 1.5;
    }

    .about-visual {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .about-image-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      background: var(--bg-white);
    }

    .about-image-wrap img {
      display: block;
      width: 100%;
      height: auto;
      aspect-ratio: 16 / 10;
      object-fit: cover;
    }

    .about-image-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .about-image-row .about-image-wrap img {
      aspect-ratio: 4 / 3;
    }

    /* 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      padding: 28px 24px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    .service-card .icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: var(--primary-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 16px;
    }

    .service-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-light);
      line-height: 1.65;
    }

    /* 流程步骤 */
    .steps-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: step;
    }

    .step-item {
      position: relative;
      padding: 28px 20px 24px;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease;
      counter-increment: step;
    }

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

    .step-item::before {
      content: counter(step);
      display: flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }

    .step-item h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .step-item p {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.6;
    }

    /* 对比评测 */
    .review-card {
      background: var(--bg-white);
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }

    .review-card::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 200px;
      height: 200px;
      background: radial-gradient(circle, rgba(214, 51, 108, 0.06) 0%, transparent 70%);
      border-radius: 50%;
    }

    .review-header {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 24px;
      margin-bottom: 32px;
      position: relative;
      z-index: 1;
    }

    .review-score {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 16px 32px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-md);
      color: #fff;
      min-width: 140px;
    }

    .review-score .score {
      font-size: 2.6rem;
      font-weight: 900;
      line-height: 1;
    }

    .review-score .out-of {
      font-size: 0.9rem;
      opacity: 0.9;
      margin-top: 4px;
    }

    .review-stars {
      font-size: 1.6rem;
      color: #ffb800;
      letter-spacing: 4px;
    }

    .review-title h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 4px;
    }

    .review-title p {
      font-size: 0.9rem;
      color: var(--text-light);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.95rem;
    }

    .compare-table thead th {
      text-align: left;
      padding: 14px 16px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 700;
      border-bottom: 2px solid var(--border);
    }

    .compare-table tbody td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border);
      color: var(--text-secondary);
    }

    .compare-table tbody tr:last-child td {
      border-bottom: none;
    }

    .compare-table tbody td:first-child {
      font-weight: 600;
      color: var(--text-main);
    }

    .compare-table .highlight {
      color: var(--primary);
      font-weight: 700;
    }

    .table-wrap {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

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

    .case-img {
      background: var(--bg-soft);
      overflow: hidden;
    }

    .case-img img {
      display: block;
      width: 100%;
      height: auto;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      transition: transform 0.35s ease;
    }

    .case-card:hover .case-img img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 20px;
    }

    .case-body h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .case-body p {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .case-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-soft);
      padding: 3px 10px;
      border-radius: 100px;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-item {
      padding: 28px 24px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }

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

    .review-stars-small {
      color: #ffb800;
      font-size: 1rem;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.7;
      flex: 1;
      margin-bottom: 16px;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }

    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 0.95rem;
      flex-shrink: 0;
    }

    .review-author-info h4 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .review-author-info p {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: box-shadow 0.2s ease;
    }

    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      background: none;
      border: none;
      cursor: pointer;
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--text-main);
      text-align: left;
      font-family: inherit;
      transition: background 0.2s ease;
    }

    .faq-question:hover {
      background: var(--bg-soft);
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      font-weight: 700;
      transition: transform 0.3s ease;
      flex-shrink: 0;
      line-height: 1;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
    }

    .faq-answer-inner {
      padding: 0 20px 18px;
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 表单 */
    .form-card {
      max-width: 720px;
      margin: 0 auto;
      padding: 40px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full {
      grid-column: 1 / -1;
    }

    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-group label .required {
      color: var(--primary);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      font-family: inherit;
      color: var(--text-main);
      background: var(--bg-soft);
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(214, 51, 108, 0.12);
      background: var(--bg-white);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 110px;
    }

    .form-submit {
      margin-top: 8px;
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-family: inherit;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      box-shadow: 0 4px 14px rgba(214, 51, 108, 0.3);
    }

    .form-submit:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(214, 51, 108, 0.4);
    }

    /* 文章列表 & 友情链接 */
    .info-section {
      display: grid;
      grid-template-columns: 1.6fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .article-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 18px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      text-decoration: none;
      color: var(--text-main);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }

    .article-item:hover {
      transform: translateX(4px);
      border-color: var(--accent);
      box-shadow: var(--shadow-sm);
    }

    .article-num {
      width: 30px;
      height: 30px;
      min-width: 30px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.8rem;
    }

    .article-item span:last-child {
      font-size: 0.92rem;
      font-weight: 500;
    }

    .friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friendly-links a {
      display: inline-block;
      padding: 8px 16px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: 100px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-secondary);
      text-decoration: none;
      transition: all 0.2s ease;
    }

    .friendly-links a:hover {
      color: var(--primary);
      border-color: var(--primary);
      background: var(--primary-soft);
      transform: translateY(-2px);
    }

    /* 联系方式 */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .contact-card {
      padding: 28px 24px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      text-align: center;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

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

    .contact-card .icon-lg {
      font-size: 2rem;
      margin-bottom: 12px;
    }

    .contact-card h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .contact-card p {
      font-size: 0.88rem;
      color: var(--text-light);
      word-break: break-all;
      line-height: 1.5;
    }

    .contact-card img {
      max-width: 140px;
      width: 100%;
      height: auto;
      margin: 8px auto 0;
      display: block;
      border-radius: var(--radius-sm);
    }

    /* Footer */
    .site-footer {
      background: #1e1e2a;
      color: #d0d0dc;
      padding: 48px 0 24px;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 32px;
      margin-bottom: 32px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      text-decoration: none;
      color: #fff;
    }

    .footer-brand img {
      height: 36px;
      width: auto;
    }

    .footer-brand span {
      font-size: 1.1rem;
      font-weight: 800;
    }

    .footer-col p {
      font-size: 0.85rem;
      line-height: 1.7;
      color: #a0a0b0;
    }

    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col ul li a {
      font-size: 0.85rem;
      color: #a0a0b0;
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .footer-col ul li a:hover {
      color: var(--accent);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.82rem;
      color: #8080a0;
    }

    .footer-bottom a {
      color: #a0a0b0;
      text-decoration: none;
    }

    .footer-bottom a:hover {
      color: var(--accent);
    }

    /* 浮动客服 */
    .floating-contact {
      position: fixed;
      right: 20px;
      bottom: 100px;
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 4px 16px rgba(214, 51, 108, 0.4);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      text-decoration: none;
    }

    .float-btn:hover {
      transform: scale(1.08);
      box-shadow: 0 6px 22px rgba(214, 51, 108, 0.5);
    }

    .back-top {
      position: fixed;
      right: 20px;
      bottom: 36px;
      z-index: 90;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--primary);
      background: var(--bg-white);
      border: 2px solid var(--border);
      box-shadow: var(--shadow-md);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      opacity: 0;
      visibility: hidden;
    }

    .back-top.visible {
      opacity: 1;
      visibility: visible;
    }

    .back-top:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }

    /* 滚动渐入 */
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }

    /* 移动端导航 */
    @media (max-width: 1024px) {
      .hero h1 {
        font-size: 2.2rem;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .info-section {
        grid-template-columns: 1fr;
      }
      .metrics {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 12px 16px;
        box-shadow: var(--shadow-md);
        gap: 4px;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li a {
        padding: 12px 14px;
        border-radius: var(--radius-sm);
      }
      .mobile-toggle {
        display: block;
      }
      .header-inner {
        position: relative;
      }
      .hero h1 {
        font-size: 1.8rem;
      }
      .hero p {
        font-size: 1rem;
      }
      .section {
        padding: 48px 0;
      }
      .section-header h2 {
        font-size: 1.5rem;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .steps-list {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .metrics {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .review-header {
        flex-direction: column;
        align-items: flex-start;
      }
      .about-highlights {
        grid-template-columns: 1fr;
      }
      .about-image-row {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .form-card {
        padding: 24px;
      }
      .review-card {
        padding: 24px;
      }
      .floating-contact {
        right: 12px;
        bottom: 80px;
      }
      .back-top {
        right: 12px;
        bottom: 24px;
      }
    }

    @media (max-width: 480px) {
      .hero h1 {
        font-size: 1.5rem;
      }
      .hero-badge {
        font-size: 0.78rem;
      }
      .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
      }
      .metrics {
        grid-template-columns: 1fr;
      }
      .brand-name {
        font-size: 1rem;
      }
      .brand img {
        height: 32px;
      }
    }