:root {
      --primary: #4f46e5;
      --primary-rgb: 79, 70, 229;
      --secondary: #06b6d4;
      --accent-pink: #ec4899;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --accent-purple: #8b5cf6;
      --rainbow-grad: linear-gradient(135deg, #4f46e5 0%, #06b6d4 25%, #10b981 50%, #f59e0b 75%, #ec4899 100%);
      --rainbow-soft: linear-gradient(135deg, rgba(79,70,229,0.06), rgba(6,182,212,0.06), rgba(16,185,129,0.06), rgba(245,158,11,0.06), rgba(236,72,153,0.06));
      --bg-base: #f8fafc;
      --bg-white: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-highlight: rgba(79, 70, 229, 0.2);
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
      --container-max: 1200px;
      --radius: 12px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: var(--bg-base);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(79, 70, 229, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 85% 30%, rgba(236, 72, 153, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 70%, rgba(6, 182, 212, 0.04) 0%, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

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

    a {
      color: var(--primary);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--accent-pink);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

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

    .brand-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: 6px;
      display: inline-block;
      transition: all 0.2s ease;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.06);
    }

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

    .btn-nav-primary {
      background: var(--rainbow-grad);
      color: #ffffff !important;
      padding: 8px 18px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: all 0.3s ease;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(255,255,255,0.8) 0%, rgba(248,250,252,0.95) 100%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-badge-wrap {
      text-align: center;
      margin-bottom: 20px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: var(--rainbow-soft);
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-emerald);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 800;
      text-align: center;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-highlight {
      background: var(--rainbow-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 17px;
      line-height: 1.7;
      color: var(--text-muted);
      text-align: center;
      max-width: 820px;
      margin: 0 auto 36px;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      background: var(--rainbow-grad);
      color: #ffffff !important;
      font-size: 16px;
      font-weight: 600;
      border-radius: 10px;
      box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
      transition: all 0.25s ease;
    }

    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(79, 70, 229, 0.4);
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      background: #ffffff;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 600;
      border-radius: 10px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

    .btn-hero-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1060px;
      margin: 0 auto;
    }

    .hero-stat-card {
      background: #ffffff;
      padding: 22px 18px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .hero-stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .hero-stat-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--rainbow-grad);
    }

    .hero-stat-value {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .hero-stat-label {
      font-size: 13px;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 通用区块样式 */
    .section-padding {
      padding: 72px 0;
    }

    .section-alt {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      background: var(--rainbow-soft);
      border: 1px solid rgba(79, 70, 229, 0.15);
      border-radius: 9999px;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.3px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 平台支持模型流光标签 */
    .models-stream {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--rainbow-soft);
      transform: translateY(-2px);
    }

    /* 卡片网格 */
    .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;
      align-items: center;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-xl);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--rainbow-soft);
      border: 1px solid rgba(79, 70, 229, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      color: var(--primary);
    }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-tag-badge {
      display: inline-block;
      margin-top: 14px;
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 6px;
      background: #f1f5f9;
      color: var(--primary);
      font-weight: 600;
      align-self: flex-start;
    }

    /* 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
      text-align: center;
      transition: all 0.3s ease;
    }

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

    .step-num {
      width: 40px;
      height: 40px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-weight: 800;
      font-size: 16px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格与卡片 */
    .review-score-hero {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 36px;
      background-image: var(--rainbow-soft);
    }

    .review-score-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-badge {
      width: 80px;
      height: 80px;
      background: var(--rainbow-grad);
      color: #ffffff;
      border-radius: 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
    }

    .score-badge .num {
      font-size: 26px;
      line-height: 1;
    }

    .score-badge .unit {
      font-size: 10px;
      opacity: 0.9;
    }

    .review-text-title {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .review-stars {
      color: #f59e0b;
      font-size: 18px;
      letter-spacing: 2px;
    }

    .review-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow-x: auto;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

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

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

    .comparison-table tr:hover td {
      background: rgba(79, 70, 229, 0.02);
    }

    .tag-better {
      color: #10b981;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .tag-normal {
      color: #64748b;
    }

    /* 案例展示 */
    .case-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

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

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16/9;
      overflow: hidden;
      background: #e2e8f0;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-content {
      padding: 20px;
    }

    .case-cat {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .case-heading {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .pricing-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      transition: all 0.3s ease;
    }

    .pricing-card.featured {
      border-color: var(--primary);
      box-shadow: var(--shadow-xl);
      transform: scale(1.02);
      background: linear-gradient(180deg, #ffffff 0%, rgba(79, 70, 229, 0.03) 100%);
    }

    .pricing-card:hover {
      transform: translateY(-4px) scale(1.02);
    }

    .pricing-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--rainbow-grad);
      color: #ffffff;
      padding: 3px 14px;
      border-radius: 9999px;
      font-size: 12px;
      font-weight: 700;
    }

    .pricing-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .pricing-price {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin: 16px 0;
    }

    .pricing-price span {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 400;
    }

    .pricing-features {
      list-style: none;
      text-align: left;
      margin: 20px 0 26px;
    }

    .pricing-features li {
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 用户评论卡片 */
    .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);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }

    .testimonial-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .testimonial-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      position: relative;
    }

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

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-soft);
      border: 1px solid rgba(79, 70, 229, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-answer {
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 表单与联系区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      padding: 40px;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 14px;
      color: var(--text-main);
      background: #f8fafc;
      transition: all 0.2s ease;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

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

    .btn-submit {
      width: 100%;
      padding: 13px;
      background: var(--rainbow-grad);
      color: #ffffff;
      border: none;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
      transition: all 0.2s ease;
    }

    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background: var(--rainbow-soft);
      border-radius: var(--radius);
      padding: 28px;
      border: 1px solid rgba(79, 70, 229, 0.15);
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .contact-item-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      box-shadow: var(--shadow-sm);
      color: var(--primary);
    }

    .qr-box {
      background: #ffffff;
      padding: 16px;
      border-radius: 10px;
      text-align: center;
      border: 1px solid var(--border-color);
      margin-top: 16px;
    }

    .qr-box img {
      max-width: 130px;
      height: auto;
      display: block;
      margin: 0 auto 8px;
    }

    /* 资讯文章列表 */
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 20px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 14px 16px;
      box-shadow: var(--shadow-sm);
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s ease;
    }

    .article-item-card:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateX(3px);
    }

    /* 友情链接与页脚 */
    .footer-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 24px;
      margin-top: auto;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-brand p {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 12px;
      line-height: 1.6;
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 8px;
    }

    .footer-col ul li a {
      font-size: 13px;
      color: var(--text-muted);
    }

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

    .friend-links-box {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      margin-bottom: 24px;
    }

    .friend-links-box h5 {
      font-size: 12px;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 10px;
    }

    .friend-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-flex a {
      font-size: 12px;
      color: var(--text-muted);
    }

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

    .copyright-box {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-light);
    }

    /* 浮动组件 */
    .floating-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--primary);
      cursor: pointer;
      transition: all 0.2s ease;
      text-decoration: none;
    }

    .float-btn:hover {
      background: var(--rainbow-grad);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title { font-size: 32px; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .steps-container { grid-template-columns: repeat(2, 1fr); }
      .pricing-grid { grid-template-columns: 1fr; }
      .testimonial-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .contact-wrapper { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-menu-toggle { display: block; }
      .hero-title { font-size: 26px; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr; }
      .grid-4 { grid-template-columns: 1fr; }
      .grid-2 { grid-template-columns: 1fr; }
      .steps-container { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .review-score-hero { flex-direction: column; text-align: center; gap: 16px; }
      .review-score-left { flex-direction: column; }
    }