:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --neon-cyan: #00e5ff;
      --neon-purple: #7928ca;
      --neon-pink: #ff007f;
      --neon-blue: #0070f3;
      --neon-green: #10b981;
      --border-color: #e2e8f0;
      --border-glow: rgba(0, 229, 255, 0.4);
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-neon: 0 8px 30px rgba(0, 229, 255, 0.12);
      --shadow-purple: 0 8px 30px rgba(121, 40, 202, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(0, 229, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 0, 127, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(121, 40, 202, 0.03) 0%, transparent 60%);
      background-attachment: fixed;
    }

    .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, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, #0f172a, var(--neon-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      text-decoration: none;
      border-radius: 6px;
      transition: var(--transition);
    }

    .nav-links li a:hover {
      color: var(--neon-blue);
      background: rgba(0, 112, 243, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.92rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      text-decoration: none;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-glow-primary {
      background: linear-gradient(135deg, #0070f3, #7928ca);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(121, 40, 202, 0.35);
    }

    .btn-glow-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(0, 112, 243, 0.45);
      color: #ffffff;
    }

    .btn-neon-outline {
      background: #ffffff;
      color: #0f172a;
      border: 1.5px solid var(--neon-cyan);
      box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
    }

    .btn-neon-outline:hover {
      background: rgba(0, 229, 255, 0.08);
      border-color: var(--neon-blue);
      transform: translateY(-2px);
    }

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

    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2.5px;
      background: var(--text-main);
      margin: 5px 0;
      border-radius: 2px;
      transition: var(--transition);
    }

    /* 区域通配样式 */
    section {
      padding: 70px 0;
      position: relative;
    }

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

    .badge-neon {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      color: #0070f3;
      background: rgba(0, 229, 255, 0.12);
      border: 1px solid rgba(0, 229, 255, 0.4);
      border-radius: 30px;
      margin-bottom: 14px;
      box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 85px 0 70px 0;
      background: linear-gradient(180deg, rgba(255,255,255,0.7) 0%, rgba(248,250,252,0.9) 100%);
      position: relative;
    }

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

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 50px;
      background: #ffffff;
      border: 1px solid #dbeafe;
      box-shadow: 0 4px 15px rgba(0, 112, 243, 0.1);
      font-size: 0.88rem;
      font-weight: 700;
      color: #0070f3;
      margin-bottom: 24px;
    }

    .hero-tag .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--neon-pink);
      box-shadow: 0 0 8px var(--neon-pink);
    }

    .hero-title {
      font-size: 2.9rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      color: #0f172a;
      max-width: 960px;
    }

    .hero-title .highlight {
      background: linear-gradient(120deg, #0070f3 0%, #7928ca 50%, #ff007f 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      position: relative;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 780px;
      line-height: 1.8;
      margin-bottom: 34px;
    }

    .hero-cta-group {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-hero-main {
      font-size: 1.05rem;
      padding: 14px 34px;
      border-radius: 12px;
      background: linear-gradient(135deg, #00e5ff 0%, #0070f3 50%, #7928ca 100%);
      color: #ffffff;
      font-weight: 800;
      box-shadow: 0 10px 30px rgba(0, 112, 243, 0.35);
      border: none;
    }

    .btn-hero-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 15px 40px rgba(0, 229, 255, 0.5);
      color: #ffffff;
    }

    .btn-hero-secondary {
      font-size: 1.05rem;
      padding: 14px 30px;
      border-radius: 12px;
      background: #ffffff;
      color: var(--text-main);
      border: 1.5px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .btn-hero-secondary:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 6px 20px rgba(0, 229, 255, 0.2);
    }

    /* 指标卡片 (首屏纯CSS数据板) */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      margin-top: 10px;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

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

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
      border-color: rgba(0, 229, 255, 0.5);
    }

    .metric-card:hover::before {
      opacity: 1;
    }

    .metric-num {
      font-size: 2.1rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.1;
      margin-bottom: 6px;
      background: linear-gradient(135deg, #0f172a, #0070f3);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    /* 模型矩阵胶囊群 */
    .models-bar {
      margin-top: 40px;
      padding: 20px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px dashed #cbd5e1;
      width: 100%;
    }

    .models-bar-title {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-light);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-chip {
      background: #f1f5f9;
      color: #334155;
      font-size: 0.82rem;
      font-weight: 600;
      padding: 5px 12px;
      border-radius: 6px;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-chip:hover {
      background: #ffffff;
      color: var(--neon-blue);
      border-color: var(--neon-cyan);
      box-shadow: 0 0 10px rgba(0, 229, 255, 0.25);
    }

    /* 网格通用 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

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

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

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

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 35px rgba(0, 112, 243, 0.12);
      border-color: rgba(0, 229, 255, 0.6);
    }

    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(121, 40, 202, 0.15));
      border: 1px solid rgba(0, 229, 255, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--neon-blue);
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
      margin-bottom: 16px;
    }

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

    .mini-badge {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: #f8fafc;
      color: #64748b;
      border: 1px solid #e2e8f0;
    }

    /* 平台介绍 & 混合展示 */
    .about-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .feature-item-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.15);
      color: var(--neon-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: 900;
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* 图文混排与案例 */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
      border-color: rgba(0, 229, 255, 0.5);
    }

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

    .media-thumb-box img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }

    .media-card:hover .media-thumb-box img {
      transform: scale(1.03);
    }

    .media-content {
      padding: 22px;
    }

    .media-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .media-content p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
      color: #ffffff;
      font-size: 1.2rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      box-shadow: 0 4px 15px rgba(0, 112, 243, 0.3);
    }

    .step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .review-score-banner {
      background: linear-gradient(135deg, #0f172a, #1e1b4b);
      border-radius: var(--radius-lg);
      padding: 34px 40px;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      border: 1px solid rgba(0, 229, 255, 0.3);
      box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
    }

    .score-left h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 6px;
      color: #ffffff;
    }

    .score-stars {
      color: #facc15;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .big-score {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      background: linear-gradient(135deg, var(--neon-cyan), #ffffff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .score-max {
      font-size: 1.1rem;
      color: #94a3b8;
    }

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

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .comparison-table th, 
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
    }

    .comparison-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #334155;
    }

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

    .highlight-col {
      background: rgba(0, 229, 255, 0.04);
      font-weight: 600;
      color: var(--neon-blue);
    }

    /* 用户评论 */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
      border-color: rgba(0, 229, 255, 0.5);
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
    }

    .user-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-info p {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    .review-stars {
      color: #eab308;
      font-size: 0.85rem;
      margin-bottom: 10px;
    }

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

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

    .form-control {
      padding: 12px 16px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--neon-blue);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.15);
    }

    textarea.form-control {
      min-height: 120px;
      resize: vertical;
    }

    /* 折叠面板 FAQ */
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--neon-cyan);
      box-shadow: 0 4px 15px rgba(0, 229, 255, 0.1);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--neon-blue);
      transition: var(--transition);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-answer-inner {
      padding: 0 24px 20px 24px;
    }

    /* 资讯与百科 */
    .article-link-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      text-decoration: none;
      color: var(--text-main);
      transition: var(--transition);
    }

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

    .article-tag {
      font-size: 0.78rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 112, 243, 0.08);
      color: var(--neon-blue);
    }

    /* 悬浮工具与二维码弹层 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      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: 0 4px 15px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      text-decoration: none;
      transition: var(--transition);
      position: relative;
    }

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

    .qr-popup {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      display: none;
      width: 150px;
      text-align: center;
    }

    .qr-popup img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      display: block;
      margin-bottom: 6px;
    }

    .qr-popup p {
      font-size: 0.78rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .float-btn:hover .qr-popup {
      display: block;
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.9rem;
      transition: var(--transition);
    }

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

    .footer-links.horizontal {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-links.horizontal a {
      background: #1e293b;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid #334155;
    }

    .footer-links.horizontal a:hover {
      border-color: var(--neon-cyan);
      color: #ffffff;
    }

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid #1e293b;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-bottom a {
      color: #94a3b8;
      text-decoration: none;
    }

    .footer-bottom a:hover {
      color: #ffffff;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .grid-4, .hero-metrics, .steps-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 16px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .grid-3, .grid-2, .grid-4, .hero-metrics, .steps-container, .feature-list, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .review-score-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }