:root {
      --bg-main: #f8faff;
      --bg-card: #ffffff;
      --bg-alt: #f1f5fd;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-muted: #64748b;
      --neon-cyan: #00d2ff;
      --neon-pink: #ff007a;
      --neon-purple: #7928ca;
      --neon-blue: #0070f3;
      --border-color: #e2e8f0;
      --border-glow: rgba(0, 210, 255, 0.3);
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-neon: 0 10px 25px -5px rgba(0, 210, 255, 0.15), 0 8px 10px -6px rgba(121, 40, 202, 0.1);
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-sm: 6px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(0, 210, 255, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 85% 35%, rgba(255, 0, 122, 0.05) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(121, 40, 202, 0.05) 0%, transparent 50%);
      background-attachment: fixed;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      width: 100%;
      padding: 0 20px;
    }

    /* 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 var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a,
    .nav-links .ai-page-home-link {
      display: block;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-sub);
      text-decoration: none;
      transition: color 0.2s, background-color 0.2s;
      border-radius: var(--radius-sm);
    }

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

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

    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      color: #ffffff !important;
      text-decoration: none;
      border-radius: 30px;
      background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 4px 15px rgba(0, 112, 243, 0.3);
      transition: transform 0.2s, box-shadow 0.2s;
      cursor: pointer;
      white-space: nowrap;
    }

    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(121, 40, 202, 0.4);
    }

    .btn-neon-pink {
      background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
      box-shadow: 0 4px 15px rgba(255, 0, 122, 0.3);
    }

    .btn-neon-pink:hover {
      box-shadow: 0 8px 25px rgba(255, 0, 122, 0.45);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      text-decoration: none;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      transition: all 0.2s;
    }

    .btn-outline:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-blue);
      box-shadow: var(--shadow-sm);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 首屏 Hero 区域 (禁止出现任何图片) */
    .hero-section {
      padding: 70px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: #0070f3;
      margin-bottom: 24px;
    }

    .hero-badge .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--neon-pink);
      box-shadow: 0 0 10px var(--neon-pink);
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-sub);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .hero-cta-group .btn-main {
      padding: 14px 36px;
      font-size: 16px;
    }

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

    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
      opacity: 0;
      transition: opacity 0.3s;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 210, 255, 0.4);
      box-shadow: var(--shadow-neon);
    }

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

    .metric-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用Section布局 */
    .section-wrap {
      padding: 70px 0;
      border-top: 1px solid rgba(226, 232, 240, 0.6);
    }

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

    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--neon-purple);
      background: rgba(121, 40, 202, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .about-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .about-card h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-card p {
      font-size: 15px;
      color: var(--text-sub);
      margin-bottom: 16px;
      line-height: 1.8;
    }

    .about-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }

    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .about-feature-item svg {
      color: var(--neon-blue);
      flex-shrink: 0;
    }

    /* 聚合模型矩阵 (AIGC服务) */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-bottom: 40px;
    }

    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
    }

    .model-pill:hover {
      border-color: var(--neon-cyan);
      background: rgba(0, 210, 255, 0.05);
      transform: translateY(-2px);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      border-color: var(--neon-cyan);
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(121, 40, 202, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-purple);
      margin-bottom: 20px;
    }

    .service-card h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 一站式创作场景 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .scenario-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s;
    }

    .scenario-box:hover {
      border-color: var(--neon-pink);
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(255, 0, 122, 0.1);
    }

    .scenario-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .scenario-badge {
      font-size: 11px;
      font-weight: 600;
      color: var(--neon-blue);
      background: rgba(0, 112, 243, 0.08);
      padding: 2px 8px;
      border-radius: 12px;
    }

    .scenario-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 行业方案与流程 */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .industry-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .industry-card h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .industry-card ul {
      list-style: none;
      font-size: 14px;
      color: var(--text-sub);
    }

    .industry-card ul li {
      margin-bottom: 8px;
      position: relative;
      padding-left: 18px;
    }

    .industry-card ul li::before {
      content: "•";
      position: absolute;
      left: 0;
      color: var(--neon-blue);
      font-size: 18px;
      line-height: 1;
    }

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

    .process-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .step-num {
      width: 44px;
      height: 44px;
      line-height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
      color: #ffffff;
      font-weight: 800;
      font-size: 18px;
      margin: 0 auto 16px;
      box-shadow: 0 4px 10px rgba(0, 112, 243, 0.3);
    }

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

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 对比评测 */
    .rating-banner {
      background: linear-gradient(135deg, #ffffff, var(--bg-alt));
      border: 2px solid rgba(0, 210, 255, 0.4);
      border-radius: var(--radius-lg);
      padding: 24px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-neon);
    }

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

    .rating-score {
      font-size: 42px;
      font-weight: 900;
      color: var(--neon-pink);
      line-height: 1;
    }

    .rating-text h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .rating-stars {
      color: #ffb800;
      font-size: 16px;
      letter-spacing: 2px;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

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

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

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

    .highlight-col {
      background: rgba(0, 112, 243, 0.03);
      font-weight: 600;
      color: var(--neon-blue);
    }

    /* 案例展示区 (含素材图与宣传图) */
    .cases-gallery {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s;
    }

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

    .case-img-wrap {
      width: 100%;
      overflow: hidden;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-body {
      padding: 20px;
    }

    .case-body h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .case-body p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .banner-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .banner-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    /* Token 比价 */
    .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 24px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
    }

    .price-card.featured {
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-neon);
    }

    .price-card.featured::before {
      content: "推荐热选";
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
      color: #ffffff;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 14px;
      border-radius: 20px;
    }

    .price-val {
      font-size: 36px;
      font-weight: 800;
      color: var(--text-main);
      margin: 16px 0;
    }

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

    .price-features {
      list-style: none;
      margin: 20px 0 28px;
      text-align: left;
      font-size: 14px;
      color: var(--text-sub);
    }

    .price-features li {
      margin-bottom: 10px;
      padding-left: 20px;
      position: relative;
    }

    .price-features li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: #10b981;
      font-weight: bold;
    }

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

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

    .review-text {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

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

    .user-avatar-badge {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.2), rgba(121, 40, 202, 0.2));
      color: var(--neon-purple);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .user-meta h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 需求匹配与表单 */
    .form-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      max-width: 760px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
    }

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

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

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 14px;
      color: var(--text-main);
      background: var(--bg-main);
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
      font-family: inherit;
    }

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

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

    /* FAQ 折叠面板 */
    .faq-list {
      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-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.2s;
    }

    .faq-item.active {
      border-color: var(--neon-cyan);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      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: 20px;
      transition: transform 0.3s;
      color: var(--neon-blue);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: var(--bg-alt);
    }

    .faq-answer-inner {
      padding: 16px 24px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 文章与百科 */
    .articles-container {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 28px;
    }

    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }

    .article-links-list li a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      background: var(--bg-main);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      text-decoration: none;
      transition: background 0.2s, color 0.2s;
    }

    .article-links-list li a:hover {
      background: rgba(0, 112, 243, 0.08);
      color: var(--neon-blue);
    }

    /* 联系与客服 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
    }

    .contact-item:last-child {
      margin-bottom: 0;
    }

    .contact-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(0, 210, 255, 0.1);
      color: var(--neon-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      flex-shrink: 0;
    }

    .contact-detail h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .contact-detail p {
      font-size: 14px;
      color: var(--text-sub);
    }

    .qr-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .qr-card img {
      max-width: 170px;
      height: auto;
      border-radius: var(--radius-md);
      margin: 16px auto;
      display: block;
      border: 1px solid var(--border-color);
    }

    /* 友情链接与底部 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      color: var(--text-sub);
      font-size: 14px;
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 30px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 24px;
      padding: 14px 20px;
      background: var(--bg-alt);
      border-radius: var(--radius-md);
    }

    .footer-friend-links span {
      font-weight: 700;
      color: var(--text-main);
      font-size: 13px;
    }

    .footer-friend-links a {
      color: var(--text-sub);
      text-decoration: none;
      font-size: 13px;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 悬浮客服与返回顶部 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      transition: all 0.2s;
      text-decoration: none;
    }

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

    .float-btn-primary {
      background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
      color: #ffffff;
      border: none;
      box-shadow: 0 6px 20px rgba(0, 112, 243, 0.4);
    }

    .float-btn-primary:hover {
      color: #ffffff;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid,
      .industry-grid,
      .pricing-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-gallery {
        grid-template-columns: 1fr;
      }
      .banner-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .contact-grid,
      .articles-container {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li,
      .nav-links .ai-page-home-link {
        width: 100%;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .services-grid,
      .scenarios-grid,
      .industry-grid,
      .process-timeline,
      .pricing-grid,
      .reviews-grid,
      .hero-metrics,
      .form-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
      }
      .rating-info {
        flex-direction: column;
      }
    }