:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --secondary: #06b6d4;
      --accent-coral: #f43f5e;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-focus: #c7d2fe;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 20px -2px rgba(99,102,241,0.08);
      --shadow-lg: 0 10px 25px -3px rgba(99,102,241,0.12);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-full: 9999px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(244, 63, 94, 0.02) 0%, transparent 50%);
      background-attachment: fixed;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    header.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-color);
      transition: background 0.3s;
    }

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

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

    .brand-box img.ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
      border-radius: var(--radius-sm);
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -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: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

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

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

    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff !important;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
      border: none;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: transparent;
      color: var(--primary);
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: var(--radius-full);
      border: 1.5px solid var(--primary);
      cursor: pointer;
      transition: all 0.2s;
    }

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

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      padding: 8px;
      cursor: pointer;
    }

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

    /* 首屏 Hero (不含图片) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
    }

    .hero-container {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: linear-gradient(90deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .hero-badge .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-emerald);
      border-radius: 50%;
      box-shadow: 0 0 0 rgba(16, 185, 129, 0.4);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: var(--text-main);
      margin-bottom: 20px;
    }

    .hero-title .gradient-text {
      background: linear-gradient(135deg, #4f46e5 20%, #06b6d4 60%, #f43f5e 90%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s;
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
    }

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

    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 区域通用样式 */
    .section-padding {
      padding: 72px 0;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

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

    /* 平台介绍 */
    .platform-intro-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .intro-text h3 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
    }

    .intro-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1rem;
      line-height: 1.8;
    }

    .intro-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .hl-item {
      padding: 14px;
      background: var(--bg-main);
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary);
    }

    .hl-item strong {
      display: block;
      color: var(--text-main);
      font-size: 0.95rem;
      margin-bottom: 4px;
    }

    .hl-item span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .models-badge-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      background: #fafafa;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-color);
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: 0 1px 2px rgba(0,0,0,0.03);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-chip::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-coral);
    }

    /* 场景与能力服务卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      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-lg);
      border-color: var(--border-focus);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-weight: 700;
      font-size: 1.25rem;
    }

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

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

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .service-tags span {
      background: var(--bg-main);
      color: var(--text-muted);
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 500;
    }

    /* 对比评测表格与卡片 */
    .eval-overview-card {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .eval-score-box {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-circle {
      width: 88px;
      height: 88px;
      background: linear-gradient(135deg, #f59e0b, #f43f5e);
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      box-shadow: 0 4px 15px rgba(244, 63, 94, 0.4);
    }

    .score-circle .big-num {
      font-size: 2.2rem;
      line-height: 1;
    }

    .score-circle .total-num {
      font-size: 0.75rem;
      opacity: 0.9;
    }

    .eval-intro h3 {
      font-size: 1.45rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .eval-stars {
      color: #fbbf24;
      font-size: 1.1rem;
      letter-spacing: 3px;
      margin-bottom: 6px;
    }

    .eval-table-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

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

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

    .eval-table th {
      background: #f1f5f9;
      color: var(--text-main);
      font-weight: 700;
    }

    .eval-table tr:hover td {
      background: #fafafa;
    }

    .eval-table .highlight-col {
      background: rgba(99, 102, 241, 0.04);
      font-weight: 600;
      color: var(--primary);
    }

    /* 案例展示区（带图片） */
    .showcase-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }

    .showcase-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

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

    .showcase-img-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }

    .showcase-card:hover .showcase-img-box img {
      transform: scale(1.02);
    }

    .showcase-content {
      padding: 24px;
    }

    .showcase-content h4 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .showcase-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .showcase-sub-column {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

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

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 36px;
      height: 36px;
      line-height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      margin: 0 auto 16px;
      font-size: 0.95rem;
    }

    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Token 比价与方案 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .price-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

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

    .price-card.featured::after {
      content: "热选方案";
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 2px 14px;
      border-radius: var(--radius-full);
    }

    .price-card h4 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .price-value {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin: 16px 0;
    }

    .price-value span {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 400;
    }

    .price-features {
      text-align: left;
      margin: 20px 0 28px;
      flex-grow: 1;
    }

    .price-features li {
      font-size: 0.9rem;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .price-features li::before {
      content: "✓";
      color: var(--accent-emerald);
      font-weight: bold;
    }

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

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    .reviewer-meta h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-meta p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-item:hover {
      border-color: var(--border-focus);
    }

    .faq-header {
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.25rem;
      transition: transform 0.25s ease;
      color: var(--primary);
    }

    .faq-content {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fafafa;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-content {
      padding: 16px 24px 20px;
      max-height: 300px;
      border-top: 1px solid var(--border-color);
    }

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

    /* 需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-side h3 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .contact-info-side p {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 0.95rem;
    }

    .contact-details {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 30px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .contact-item strong {
      min-width: 80px;
      color: var(--text-muted);
    }

    .qr-box {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px;
      background: var(--bg-main);
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-color);
    }

    .qr-box img {
      width: 90px;
      height: 90px;
      object-fit: contain;
      border-radius: 4px;
      background: #fff;
    }

    .qr-desc h5 {
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .qr-desc p {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    .form-side form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

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

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

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 文章推荐 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .article-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      font-size: 0.88rem;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .article-card a {
      font-weight: 600;
      color: var(--text-main);
      display: block;
      margin-bottom: 8px;
      line-height: 1.4;
    }

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

    .article-card .art-meta {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 底部收尾 */
    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 24px;
      color: var(--text-main);
      margin-top: 60px;
    }

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

    .footer-about p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-top: 12px;
      line-height: 1.7;
    }

    .footer-col h5 {
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col ul li a {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

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

    .footer-friendlinks {
      border-top: 1px solid var(--border-color);
      padding: 18px 0;
      font-size: 0.82rem;
      color: var(--text-muted);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
    }

    .footer-friendlinks a {
      color: var(--text-muted);
    }

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

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--text-muted);
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 浮动组件 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-size: 1.1rem;
      transition: all 0.2s;
    }

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

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.3rem; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .showcase-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .pricing-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .articles-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .platform-intro-card { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

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

      .mobile-menu-toggle {
        display: block;
      }

      .hero-title { font-size: 1.85rem; }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .eval-overview-card { flex-direction: column; text-align: center; }
      .eval-score-box { flex-direction: column; }
    }