:root {
      --primary-color: #3b82f6;
      --primary-gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
      --accent-gradient: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
      --warm-gradient: linear-gradient(135deg, #f97316 0%, #facc15 100%);
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #93c5fd;
      --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
      --card-hover-shadow: 0 16px 32px -4px rgba(37, 99, 235, 0.12), 0 6px 12px -2px rgba(15, 23, 42, 0.04);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 9999px;
      --transition: all 0.28s ease;
      --container-width: 1200px;
    }

    * {
      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-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

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

    ul, ol {
      list-style: none;
    }

    /* 顶部导航 */
    .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 rgba(226, 232, 240, 0.8);
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
    }

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

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

    .brand-logo-wrap {
      height: 40px;
      display: flex;
      align-items: center;
    }

    .ai-page-logo {
      height: 36px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0f172a;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.93rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: rgba(37, 99, 235, 0.06);
    }

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

    .btn-nav-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 9px 20px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
      color: #ffffff;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
      color: var(--text-main);
    }

    /* 首屏无图 Hero */
    .hero-section {
      padding: 80px 0 60px 0;
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #eff6ff;
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-pill);
      font-size: 0.85rem;
      font-weight: 600;
      color: #1d4ed8;
      margin-bottom: 24px;
    }

    .hero-badge span.dot {
      width: 8px;
      height: 8px;
      background-color: #22c55e;
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    }

    .hero-title {
      font-size: clamp(2rem, 4.5vw, 3.25rem);
      font-weight: 800;
      line-height: 1.25;
      color: #0f172a;
      letter-spacing: -1px;
      margin-bottom: 24px;
    }

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

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

    .btn-hero-main {
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(37, 99, 235, 0.4);
      color: #ffffff;
    }

    .btn-hero-secondary {
      background: #ffffff;
      color: var(--text-main);
      padding: 14px 28px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      border: 1px solid var(--border-color);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-secondary:hover {
      background: #f8fafc;
      border-color: #cbd5e1;
      color: var(--primary-color);
      transform: translateY(-2px);
    }

    /* 抽象科技仪表盘卡片（首屏替代图片） */
    .hero-dashboard-preview {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px -15px rgba(30, 41, 59, 0.08);
      position: relative;
    }

    .dashboard-topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid #f1f5f9;
      padding-bottom: 16px;
      margin-bottom: 20px;
    }

    .topbar-indicators {
      display: flex;
      gap: 8px;
    }

    .indicator-circle {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #e2e8f0;
    }

    .indicator-circle.red { background: #fda4af; }
    .indicator-circle.yellow { background: #fde047; }
    .indicator-circle.green { background: #86efac; }

    .topbar-title {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      background: #f8fafc;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
    }

    .hero-stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .stat-metric-card {
      background: #f8fafc;
      border: 1px solid #edf2f7;
      padding: 16px;
      border-radius: var(--radius-md);
      text-align: left;
    }

    .metric-name {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 4px;
    }

    .metric-value {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .metric-tag {
      font-size: 0.75rem;
      color: #16a34a;
      display: inline-block;
      margin-top: 4px;
      font-weight: 600;
    }

    /* 模块通用标题 */
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 50px auto;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-color);
      margin-bottom: 10px;
      background: rgba(37, 99, 235, 0.08);
      padding: 4px 14px;
      border-radius: var(--radius-pill);
    }

    .section-heading {
      font-size: 2rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.35;
      margin-bottom: 14px;
    }

    .section-subheading {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台介绍 / 关于我们 */
    .about-card-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }

    .about-text-panel h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: #0f172a;
    }

    .about-text-panel p {
      font-size: 0.98rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .feature-check-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 24px;
    }

    .check-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-main);
    }

    .check-icon {
      width: 18px;
      height: 18px;
      background: #dbeafe;
      color: #2563eb;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: bold;
    }

    .about-visual-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--card-shadow);
      position: relative;
    }

    .visual-inner-item {
      padding: 16px;
      background: #f8fafc;
      border: 1px solid #edf2f7;
      border-radius: var(--radius-md);
      margin-bottom: 16px;
    }

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

    .visual-inner-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 4px;
    }

    .visual-inner-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* AIGC 服务与场景网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .service-box-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .service-icon-wrap {
      width: 44px;
      height: 44px;
      background: rgba(37, 99, 235, 0.08);
      color: #2563eb;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }

    .service-box-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #0f172a;
    }

    .service-box-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    .service-tag {
      font-size: 0.75rem;
      background: #f1f5f9;
      color: #475569;
      padding: 3px 10px;
      border-radius: var(--radius-sm);
    }

    /* 模型矩阵胶囊标签 */
    .models-stream {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius-lg);
    }

    .model-badge {
      font-size: 0.85rem;
      font-weight: 600;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      color: #334155;
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      transition: var(--transition);
    }

    .model-badge:hover {
      background: #eff6ff;
      border-color: #93c5fd;
      color: #1d4ed8;
      transform: translateY(-2px);
    }

    /* 制作场景与工作流 */
    .workflow-timeline {
      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: 24px;
      position: relative;
      box-shadow: var(--card-shadow);
    }

    .step-number {
      font-size: 2rem;
      font-weight: 800;
      color: #dbeafe;
      line-height: 1;
      margin-bottom: 12px;
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #0f172a;
    }

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

    /* 案例中心图文展示 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .case-img-holder {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background: #f1f5f9;
      position: relative;
    }

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

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

    .case-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-tag {
      font-size: 0.75rem;
      font-weight: 600;
      color: #2563eb;
      margin-bottom: 6px;
    }

    .case-heading {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .case-detail {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格板块 */
    .compare-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      padding: 32px;
      overflow-x: auto;
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #eff6ff 0%, #faf5ff 100%);
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-md);
      padding: 20px 24px;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-item-group {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-badge {
      font-size: 2.2rem;
      font-weight: 900;
      color: #1e40af;
      line-height: 1;
    }

    .score-info h4 {
      font-size: 1.1rem;
      color: #0f172a;
      font-weight: 700;
    }

    .score-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

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

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #edf2f7;
      font-size: 0.92rem;
    }

    .compare-table th {
      background: #f8fafc;
      color: #1e293b;
      font-weight: 700;
    }

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

    .highlight-col {
      background: rgba(37, 99, 235, 0.03);
      font-weight: 600;
      color: #1d4ed8;
    }

    /* Token 比价卡片组 */
    .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(--card-shadow);
      text-align: center;
      transition: var(--transition);
      position: relative;
    }

    .price-card.featured {
      border: 2px solid #3b82f6;
      box-shadow: 0 12px 30px rgba(59, 130, 246, 0.15);
    }

    .featured-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: var(--radius-pill);
      text-transform: uppercase;
    }

    .price-tier-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }

    .price-value-box {
      margin-bottom: 20px;
    }

    .price-unit {
      font-size: 1.1rem;
      color: #475569;
    }

    .price-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: #0f172a;
    }

    .price-feature-list {
      text-align: left;
      margin-bottom: 28px;
    }

    .price-feature-list li {
      font-size: 0.9rem;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed #f1f5f9;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 用户评论网格 */
    .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-md);
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .reviewer-avatar-placeholder {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
      color: #3730a3;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: #0f172a;
    }

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

    /* 需求匹配与在线表单 */
    .form-box-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--card-shadow);
      max-width: 800px;
      margin: 0 auto;
    }

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

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: #334155;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #f8fafc;
      color: #0f172a;
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: #3b82f6;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

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

    .btn-form-submit {
      width: 100%;
      background: var(--primary-gradient);
      color: #ffffff;
      border: none;
      padding: 14px 24px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
      transition: var(--transition);
    }

    .btn-form-submit:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
    }

    /* FAQ 手风琴折叠面板 */
    .faq-container-list {
      max-width: 880px;
      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);
      box-shadow: var(--card-shadow);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-question-btn {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1.02rem;
      font-weight: 700;
      color: #0f172a;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-question-btn:hover {
      color: var(--primary-color);
    }

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

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

    .faq-answer-panel {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
    }

    .faq-answer-panel p {
      padding: 0 24px 20px 24px;
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 行业资讯与短代码占位板块 */
    .articles-block-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

    .article-links-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 20px;
    }

    .article-item-link {
      padding: 14px 18px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px solid #edf2f7;
      font-size: 0.92rem;
      color: #1e293b;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .article-item-link:hover {
      background: #eff6ff;
      border-color: #bfdbfe;
      color: #2563eb;
    }

    /* 联系我们与客服二维码 */
    .contact-layout-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

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

    .contact-item-label {
      font-weight: 700;
      font-size: 0.95rem;
      color: #0f172a;
      width: 110px;
    }

    .contact-item-val {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .contact-qr-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    .qr-container {
      width: 180px;
      height: 180px;
      padding: 10px;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .qr-container img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

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

    .footer-content-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.6;
      margin-bottom: 16px;
    }

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

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

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

    .friend-links-area {
      border-top: 1px solid #1e293b;
      padding: 24px 0;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: #e2e8f0;
      margin-bottom: 12px;
    }

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

    .friend-links-wrap a {
      color: #94a3b8;
      font-size: 0.88rem;
    }

    .friend-links-wrap a:hover {
      color: #38bdf8;
    }

    .footer-bottom-bar {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服挂件 */
    .floating-support-bubble {
      position: fixed;
      right: 24px;
      bottom: 28px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      color: #0f172a;
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.1rem;
      transition: var(--transition);
    }

    .float-btn.main-btn {
      background: var(--primary-gradient);
      color: #ffffff;
      border: none;
    }

    .float-btn:hover {
      transform: translateY(-3px);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .services-grid, .reviews-grid, .pricing-grid, .case-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-timeline, .hero-stat-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .about-card-container, .contact-layout-grid, .custom-form, .services-grid, .reviews-grid, .pricing-grid, .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .hero-stat-grid, .workflow-timeline, .article-links-row {
        grid-template-columns: 1fr;
      }
      .footer-content-grid {
        grid-template-columns: 1fr;
      }
      .section-heading {
        font-size: 1.6rem;
      }
    }