:root {
      --primary: #1e40af;
      --primary-bright: #2563eb;
      --primary-light: #eff6ff;
      --primary-hover: #1d4ed8;
      --accent: #0284c7;
      --accent-cyan: #06b6d4;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --border-color: #e2e8f0;
      --border-focus: #93c5fd;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(30, 64, 175, 0.1), 0 4px 6px -4px rgba(30, 64, 175, 0.05);
      --shadow-xl: 0 20px 25px -5px rgba(30, 64, 175, 0.12), 0 8px 10px -6px rgba(30, 64, 175, 0.08);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-max: 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-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: var(--primary-bright);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary-hover);
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }

    .brand-title-group {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
      line-height: 1.2;
    }

    .brand-slogan {
      font-size: 0.75rem;
      color: var(--text-muted);
      font-weight: 500;
    }

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

    .nav-links li a {
      color: var(--text-main);
      font-size: 0.9375rem;
      font-weight: 600;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-bright);
      background-color: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-bright) 0%, var(--primary) 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary) 0%, #172554 100%);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
    }

    .btn-outline {
      background-color: #ffffff;
      border-color: var(--border-color);
      color: var(--text-main) !important;
    }
    .btn-outline:hover {
      border-color: var(--primary-bright);
      color: var(--primary-bright) !important;
      background-color: var(--primary-light);
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.875rem;
      border-radius: var(--radius-sm);
    }

    .btn-lg {
      padding: 14px 28px;
      font-size: 1.0625rem;
      border-radius: var(--radius-lg);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 首屏 Hero (严禁出现图片) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                  radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                  linear-gradient(180deg, #ffffff 0%, var(--bg-page) 100%);
      padding: 80px 0 60px;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary-light);
      border: 1px solid #bfdbfe;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 20px;
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--primary-bright);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    }

    .badge-text {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-title .highlight {
      color: var(--primary-bright);
      position: relative;
    }

    .hero-desc {
      font-size: 1.125rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
    }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-features-list {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      list-style: none;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }

    .hero-features-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .hero-features-list li svg {
      color: var(--primary-bright);
      flex-shrink: 0;
    }

    /* Hero 右侧纯 CSS 科技卡片区 */
    .hero-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-xl);
      position: relative;
      overflow: hidden;
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-bright), var(--accent-cyan));
    }

    .panel-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-color);
    }

    .panel-status {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8125rem;
      color: #16a34a;
      font-weight: 600;
    }

    .status-indicator {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: #16a34a;
    }

    .panel-engine-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-bottom: 20px;
    }

    .engine-card {
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 14px;
      transition: var(--transition);
    }
    .engine-card:hover {
      border-color: var(--primary-bright);
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .engine-title {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .engine-desc {
      font-size: 0.75rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    .panel-metric-bar {
      background: var(--bg-alt);
      border-radius: var(--radius-md);
      padding: 14px;
      display: flex;
      justify-content: space-around;
      text-align: center;
    }

    .metric-item-val {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-bright);
    }

    .metric-item-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 全局公用 Section 标题与排版 */
    section {
      padding: 80px 0;
      position: relative;
    }

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

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

    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-bright);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      border: 1px solid #bfdbfe;
    }

    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

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

    /* 平台核心能力介绍 */
    .platform-intro-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
    }

    .intro-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 24px;
    }

    .intro-feature {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .intro-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary-bright);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-weight: 800;
      font-size: 1.25rem;
    }

    .intro-feature-body h3 {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .intro-feature-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 支持大模型标签云 */
    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.8125rem;
      font-weight: 600;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }

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

    /* 一站式制作场景卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
    }

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

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

    .service-icon-box {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, var(--primary-light), #dbeafe);
      color: var(--primary-bright);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.125rem;
      font-weight: 700;
      flex-shrink: 0;
    }

    .service-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .service-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

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

    .service-subtag {
      font-size: 0.75rem;
      background: var(--bg-page);
      color: var(--text-light);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    /* 行业方案与流程 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 24px;
      position: relative;
    }

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

    .step-num {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-bright);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.125rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
    }

    .step-title {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 案例中心图文展示 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

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

    .showcase-card:hover {
      box-shadow: var(--shadow-xl);
      border-color: var(--primary-bright);
      transform: translateY(-4px);
    }

    .showcase-img-wrap {
      width: 100%;
      height: 200px;
      background: #e2e8f0;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .showcase-card:hover .ai-page-image {
      transform: scale(1.04);
    }

    .showcase-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .showcase-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .showcase-text {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    /* 对比评测板块 */
    .review-score-panel {
      background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 32px;
      box-shadow: var(--shadow-lg);
    }

    .score-summary h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 6px;
      color: #ffffff;
    }

    .score-summary p {
      color: #bfdbfe;
      font-size: 0.9375rem;
    }

    .score-badge-box {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.12);
      padding: 12px 24px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .score-num {
      font-size: 2.25rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .score-stars {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .stars-icon {
      color: #facc15;
      font-size: 1.125rem;
      letter-spacing: 2px;
    }

    .score-total-txt {
      font-size: 0.8125rem;
      color: #e0f2fe;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.875rem;
    }

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

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

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

    .eval-table .highlight-col {
      background-color: var(--primary-light);
      font-weight: 700;
      color: var(--primary);
    }

    /* Token 比价板块 */
    .token-price-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 24px;
    }

    .price-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }

    .price-card.featured {
      border: 2px solid var(--primary-bright);
      box-shadow: var(--shadow-lg);
    }

    .featured-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--primary-bright);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 10px;
      border-radius: var(--radius-full);
    }

    .price-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .price-amount {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 16px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .price-amount span {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    .price-list {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .price-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    /* 客户评论卡片 (6条) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

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

    .testimonial-card:hover {
      border-color: var(--primary-bright);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .user-info-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 800;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid #bfdbfe;
    }

    .user-meta-name {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-meta-role {
      font-size: 0.75rem;
      color: var(--text-light);
    }

    .testimonial-comment {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .comment-rating {
      margin-top: 14px;
      color: #f59e0b;
      font-size: 0.875rem;
      letter-spacing: 1px;
    }

    /* FAQ 折叠面板 (10条以上) */
    .faq-container {
      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;
      transition: var(--transition);
    }

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

    .faq-question {
      width: 100%;
      padding: 18px 24px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      gap: 16px;
    }

    .faq-icon-arrow {
      font-size: 1.125rem;
      color: var(--text-light);
      transition: transform 0.25s ease;
      flex-shrink: 0;
    }

    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--primary-bright);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      display: block;
      border-top-color: var(--bg-page);
    }

    /* 行业资讯 / 最新文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .article-item-card:hover {
      border-color: var(--primary-bright);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .article-tag {
      font-size: 0.75rem;
      color: var(--primary-bright);
      font-weight: 700;
      margin-bottom: 8px;
    }

    .article-link-title {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .article-link-title:hover {
      color: var(--primary-bright);
    }

    /* 表单与联系模块 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: start;
    }

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

    .contact-info-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .contact-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .contact-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .qr-container {
      text-align: center;
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
    }

    .qr-container img {
      width: 140px;
      height: 140px;
      object-fit: contain;
      margin: 0 auto 8px;
      display: block;
      border-radius: var(--radius-sm);
    }

    .form-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

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

    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 10px 14px;
      font-size: 0.9375rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background-color: var(--bg-page);
      color: var(--text-main);
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-bright);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

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

    /* 友情链接与页脚 */
    .links-section {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 30px 0;
    }

    .links-wrapper {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }

    .links-label {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .links-wrapper a {
      font-size: 0.8125rem;
      color: var(--text-muted);
      background: var(--bg-page);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .links-wrapper a:hover {
      color: var(--primary-bright);
      border-color: var(--primary-bright);
      background: var(--primary-light);
    }

    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 40px 0 24px;
      border-top: 1px solid #1e293b;
    }

    .footer-inner {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid #1e293b;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .footer-brand-name {
      font-size: 1.125rem;
      font-weight: 800;
      color: #ffffff;
    }

    .footer-brand-desc {
      font-size: 0.8125rem;
      color: #64748b;
    }

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

    .footer-links-group a {
      color: #94a3b8;
      font-size: 0.875rem;
    }

    .footer-links-group a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      text-align: center;
      font-size: 0.8125rem;
      color: #64748b;
      padding-top: 20px;
    }

    /* 浮动客服挂件 */
    .float-service-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: var(--primary-bright);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-lg);
      cursor: pointer;
      transition: var(--transition);
      border: none;
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary);
      transform: scale(1.08);
    }

    .float-qr-popover {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-xl);
      border: 1px solid var(--border-color);
      width: 160px;
      text-align: center;
      color: var(--text-main);
    }

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

    .float-qr-popover img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-sm);
      margin-bottom: 6px;
    }

    .float-qr-popover span {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .contact-form-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .navbar {
        height: 64px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        width: 100%;
        padding: 10px 14px;
      }
      .nav-toggle {
        display: block;
      }
      .header-actions .btn {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.625rem;
      }
      section {
        padding: 50px 0;
      }
      .review-score-panel {
        flex-direction: column;
        align-items: flex-start;
      }
    }