:root {
      --primary: #4f46e5;
      --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
      --secondary-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #6366f1 100%);
      --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #ef4444 50%, #ec4899 100%);
      --surface-gradient: linear-gradient(180deg, #faf5ff 0%, #f0fdf4 50%, #eff6ff 100%);
      --bg-light: #f8fafc;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(99, 102, 241, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.1), 0 8px 10px -6px rgba(99, 102, 241, 0.05);
      --shadow-lg: 0 20px 35px -10px rgba(124, 58, 237, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
      --transition: all 0.28s ease;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(236, 72, 153, 0.08) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(245, 158, 11, 0.06) 0px, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

    ul, ol {
      list-style: none;
    }

    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

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

    .logo-box img {
      max-height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.08);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    }

    .btn-primary:hover {
      opacity: 0.95;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
      color: #ffffff;
    }

    .btn-outline {
      border-color: #cbd5e1;
      background: #ffffff;
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #faf5ff;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 区域通用结构 */
    .section-padding {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      border-radius: 999px;
      margin-bottom: 12px;
      background: rgba(99, 102, 241, 0.1);
      color: var(--primary);
      border: 1px solid rgba(99, 102, 241, 0.2);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO 区域 - 坚决不使用任何图片 */
    .hero-section {
      padding: 90px 0 70px 0;
      position: relative;
    }

    .hero-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .hero-tag-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 18px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 999px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-tag-dot {
      width: 10px;
      height: 10px;
      background: #10b981;
      border-radius: 50%;
      animation: pulse 2s infinite;
    }

    .hero-tag-text {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 900;
      letter-spacing: -1px;
      line-height: 1.25;
      margin-bottom: 20px;
      max-width: 900px;
      color: var(--text-main);
    }

    .hero-h1 .gradient-text {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 820px;
      margin-bottom: 36px;
      line-height: 1.7;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-hero-main {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 12px;
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
    }

    .btn-hero-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px rgba(99, 102, 241, 0.5);
      color: #ffffff;
    }

    .btn-hero-sub {
      padding: 14px 30px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 12px;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #cbd5e1;
      box-shadow: var(--shadow-sm);
    }

    .btn-hero-sub:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #fdf4ff;
    }

    /* 纯 CSS 科技数据面板 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      max-width: 1060px;
      margin-top: 10px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid rgba(226, 232, 240, 0.9);
      padding: 24px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      text-align: left;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .stat-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--primary-gradient);
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .stat-number span {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--primary);
    }

    .stat-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stat-desc {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 模型跑马灯矩阵 */
    .model-matrix-bar {
      padding: 30px 0 50px 0;
    }

    .matrix-title {
      text-align: center;
      font-size: 0.9rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--text-light);
      margin-bottom: 20px;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 8px 16px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      box-shadow: 0 1px 3px rgba(0,0,0,0.02);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-tag:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    .model-tag-highlight {
      background: #f5f3ff;
      border-color: #ddd6fe;
      color: #6d28d9;
    }

    /* 通用网格与卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #c7d2fe;
    }

    .card-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--surface-gradient);
      border: 1px solid #e0e7ff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .card-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .card-list {
      margin-top: 10px;
      padding-top: 14px;
      border-top: 1px dashed var(--border-color);
    }

    .card-list li {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .card-list li::before {
      content: '✓';
      color: #10b981;
      font-weight: bold;
    }

    /* 斑斓场景卡片组 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .scene-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #c084fc;
    }

    .scene-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 6px;
      background: #ede9fe;
      color: #6b21a8;
      margin-bottom: 12px;
    }

    .scene-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .scene-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 案例图片区 */
    .gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

    .gallery-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .img-box {
      width: 100%;
      background: #f1f5f9;
      overflow: hidden;
      position: relative;
    }

    .img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.5s ease;
    }

    .gallery-item:hover .img-box img {
      transform: scale(1.03);
    }

    .gallery-info {
      padding: 20px;
      background: #ffffff;
    }

    .gallery-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .gallery-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 流程步骤 */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .process-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 36px;
      height: 36px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 12px auto;
      font-size: 0.95rem;
    }

    .step-name {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .step-desc {
      font-size: 0.8rem;
      color: var(--text-light);
      line-height: 1.4;
    }

    /* 对比评测板块 */
    .compare-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      padding: 36px;
    }

    .rating-banner {
      background: var(--surface-gradient);
      border: 1px solid #e0e7ff;
      border-radius: var(--radius-md);
      padding: 24px 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 30px;
    }

    .rating-info {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-badge {
      font-size: 3rem;
      font-weight: 900;
      color: #4f46e5;
      line-height: 1;
    }

    .score-detail h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stars {
      color: #f59e0b;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }

    .compare-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background: #fbfbfe;
    }

    .table-highlight {
      background: #f5f3ff !important;
      font-weight: 700;
      color: var(--primary);
    }

    /* Token 比价卡片 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .price-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }

    .price-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.02);
    }

    .popular-tag {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--accent-gradient);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 999px;
    }

    .price-name {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .price-value {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.2;
    }

    .price-value span {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    .price-features {
      margin: 20px 0 30px 0;
      flex-grow: 1;
    }

    .price-features li {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .price-features li::before {
      content: '✓';
      color: #10b981;
      font-weight: bold;
    }

    /* 客户评价网格 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .testimonial-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #c7d2fe;
    }

    .testimonial-body {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

    .testimonial-body::before {
      content: '“';
      font-size: 2.5rem;
      font-family: Georgia, serif;
      color: #cbd5e1;
      line-height: 0.8;
      display: block;
      margin-bottom: 4px;
    }

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

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--surface-gradient);
      border: 2px solid #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
    }

    .user-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 需求匹配与表单 */
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

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

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.92rem;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

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

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: #cbd5e1;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #fafafa;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px 22px 24px;
      border-top: 1px solid var(--border-color);
    }

    /* 资讯与百科 */
    .article-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

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

    .article-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      background: #f8fafc;
      border: 1px solid #f1f5f9;
      transition: var(--transition);
    }

    .article-item:hover {
      background: #f5f3ff;
      border-color: #ddd6fe;
    }

    .article-item a {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
    }

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

    /* 底部页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 60px 0 30px 0;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h3 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .qr-card {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #f8fafc;
      padding: 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .qr-card img {
      width: 80px;
      height: 80px;
      object-fit: cover;
      border-radius: 4px;
    }

    .qr-info {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .friend-links-wrap {
      border-top: 1px solid var(--border-color);
      padding: 24px 0;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links a {
      font-size: 0.85rem;
      color: var(--text-light);
    }

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

    .footer-bottom {
      text-align: center;
      font-size: 0.82rem;
      color: var(--text-light);
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
    }

    /* 浮动工具 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      cursor: pointer;
      font-size: 1.1rem;
      transition: var(--transition);
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-h1 { font-size: 2.3rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3, .scene-grid, .pricing-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
      .process-grid { grid-template-columns: repeat(3, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active { display: flex; }
      .nav-links li { width: 100%; }
      .nav-links li a { width: 100%; padding: 10px 14px; }
      .nav-actions { display: none; }
      
      .hero-h1 { font-size: 1.85rem; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .grid-3, .grid-4, .grid-2, .scene-grid, .pricing-grid, .testimonial-grid { grid-template-columns: 1fr; }
      .gallery-grid { grid-template-columns: 1fr; }
      .process-grid { grid-template-columns: repeat(2, 1fr); }
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full-width { grid-column: span 1; }
      .footer-grid { grid-template-columns: 1fr; }
      .rating-banner { flex-direction: column; align-items: flex-start; }
      .compare-wrapper { padding: 20px; }
    }

    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.15); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }