:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --primary-light: #eef2ff;
      --secondary: #06b6d4;
      --accent-pink: #ec4899;
      --accent-orange: #f97316;
      --accent-green: #10b981;
      --gradient-main: linear-gradient(135deg, #4f46e5 0%, #06b6d4 50%, #ec4899 100%);
      --gradient-subtle: linear-gradient(135deg, #f0fdfa 0%, #eef2ff 50%, #fdf2f8 100%);
      --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.95) 100%);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-focus: #818cf8;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
      --shadow-xl: 0 20px 25px -5px rgba(79, 70, 229, 0.12), 0 8px 10px -6px rgba(6, 182, 212, 0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --radius-full: 9999px;
      --transition-base: all 0.3s 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, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* 统一居中容器 */
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
      box-sizing: border-box;
    }

    /* 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);
      transition: var(--transition-base);
    }

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

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

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

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .brand-title .badge {
      font-size: 0.7rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 严格要求设置为 0 */
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      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 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition-base);
      white-space: nowrap;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, #4f46e5 100%);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
      transform: translateY(-2px);
    }

    .btn-gradient {
      background: var(--gradient-main);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
    }

    .btn-gradient:hover {
      opacity: 0.95;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.35);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border-color: var(--border-color);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 1.05rem;
    }

    .mobile-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      transition: var(--transition-base);
    }

    /* 首屏 Hero（严禁出现任何图片资源） */
    .hero-section {
      position: relative;
      padding: 90px 0 70px;
      background: radial-gradient(100% 100% at 50% 0%, #f0fdfa 0%, #f8fafc 100%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-decor-1, .hero-decor-2 {
      position: absolute;
      border-radius: 50%;
      filter: blur(80px);
      z-index: 0;
      pointer-events: none;
      opacity: 0.6;
    }

    .hero-decor-1 {
      width: 400px;
      height: 400px;
      top: -100px;
      left: 10%;
      background: rgba(99, 102, 241, 0.2);
    }

    .hero-decor-2 {
      width: 350px;
      height: 350px;
      top: 50px;
      right: 10%;
      background: rgba(6, 182, 212, 0.2);
    }

    .hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid #c7d2fe;
      border-radius: var(--radius-full);
      color: var(--primary);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-tag .dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }

    h1.hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }

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

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

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

    /* 首屏纯 CSS 数据指标卡片 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .stat-card {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--border-color);
      padding: 20px 16px;
      border-radius: var(--radius-lg);
      backdrop-filter: blur(8px);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
      text-align: center;
    }

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

    .stat-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      letter-spacing: -0.5px;
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Section 通用规范 */
    section {
      padding: 80px 0;
      position: relative;
    }

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

    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.01em;
    }

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

    /* 支持模型标签云 */
    .model-strip {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 30px 0;
    }

    .model-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      font-size: 0.85rem;
      padding: 6px 14px;
      background: var(--bg-main);
      color: var(--text-muted);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-full);
      font-weight: 500;
      transition: var(--transition-base);
    }

    .model-tag:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: #c7d2fe;
      transform: translateY(-2px);
    }

    /* 关于我们 & 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 1.65rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1rem;
      line-height: 1.7;
    }

    .feature-check-list {
      list-style: none;
      margin-bottom: 28px;
    }

    .feature-check-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 10px;
      font-weight: 500;
    }

    .feature-check-list .check-icon {
      width: 20px;
      height: 20px;
      background: #dcfce7;
      color: #16a34a;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: bold;
    }

    .media-card-group {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .media-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      background: #ffffff;
      transition: var(--transition-base);
    }

    .media-box:hover {
      box-shadow: var(--shadow-xl);
      transform: translateY(-3px);
    }

    .media-box img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    .media-caption {
      padding: 12px 16px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-muted);
      background: #ffffff;
      border-top: 1px solid var(--border-color);
    }

    /* AIGC 服务与场景卡片 */
    .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: 28px;
      transition: var(--transition-base);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--gradient-main);
      opacity: 0;
      transition: var(--transition-base);
    }

    .service-card:hover {
      border-color: #c7d2fe;
      box-shadow: var(--shadow-xl);
      transform: translateY(-5px);
    }

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

    .card-icon {
      width: 50px;
      height: 50px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    .service-tags span {
      font-size: 0.75rem;
      padding: 3px 8px;
      background: var(--bg-main);
      color: var(--text-light);
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }

    /* 一站式制作全景体验 */
    .workflow-features {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .workflow-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
      transition: var(--transition-base);
    }

    .workflow-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .wf-icon-box {
      width: 48px;
      height: 48px;
      flex-shrink: 0;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.2rem;
    }

    .wf-info h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

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

    /* 行业方案与标准流程 */
    .steps-grid {
      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-lg);
      padding: 24px 20px;
      text-align: center;
      position: relative;
      transition: var(--transition-base);
    }

    .step-card:hover {
      border-color: var(--secondary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .step-number {
      width: 36px;
      height: 36px;
      background: var(--gradient-main);
      color: #ffffff;
      font-weight: 800;
      font-size: 1rem;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 案例中心展示 */
    .cases-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(--shadow-sm);
      transition: var(--transition-base);
    }

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

    .case-image {
      aspect-ratio: 16 / 9;
      background-color: #f1f5f9;
      overflow: hidden;
    }

    .case-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-base);
    }

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

    .case-body {
      padding: 20px;
    }

    .case-category {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 6px;
      display: block;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .case-stats {
      display: flex;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 12px;
      font-size: 0.82rem;
      color: var(--text-light);
    }

    .case-stats strong {
      color: var(--accent-green);
    }

    /* 对比评测板块 */
    .compare-section {
      background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    }

    .score-banner {
      background: #ffffff;
      border: 2px solid #e0e7ff;
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .score-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-circle {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    }

    .score-circle .val {
      font-size: 1.8rem;
      line-height: 1;
    }

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

    .score-meta h3 {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      display: flex;
      gap: 4px;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

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

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .highlight-col {
      background: #f0fdf4;
      font-weight: 600;
      color: var(--text-main);
    }

    .tag-badge {
      display: inline-block;
      padding: 2px 8px;
      font-size: 0.75rem;
      border-radius: 4px;
      font-weight: 600;
    }

    .tag-green {
      background: #dcfce7;
      color: #166534;
    }

    .tag-gray {
      background: #f1f5f9;
      color: #64748b;
    }

    /* 用户评论卡片 */
    .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;
      transition: var(--transition-base);
    }

    .review-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: #c7d2fe;
      transform: translateY(-3px);
    }

    .review-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

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

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

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

    .user-meta span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition-base);
    }

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

    .faq-header {
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      background: #ffffff;
    }

    .faq-header h4 {
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .faq-toggle-icon {
      font-size: 1.25rem;
      font-weight: 300;
      color: var(--primary);
      transition: var(--transition-base);
    }

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

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      background: #f8fafc;
    }

    .faq-body-inner {
      padding: 18px 22px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid var(--border-color);
    }

    /* 文章与百科 */
    .article-section {
      background: #ffffff;
    }

    .articles-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

    .article-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .article-row {
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition-base);
    }

    .article-row:hover {
      border-color: var(--primary);
      background: var(--primary-light);
      transform: translateX(4px);
    }

    .article-row h4 {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .article-row span {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    .wiki-sidebar {
      background: var(--bg-main);
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
    }

    .wiki-sidebar h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .wiki-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .wiki-list li a {
      font-size: 0.9rem;
      color: var(--text-muted);
      display: block;
    }

    .wiki-list li a:hover {
      color: var(--primary);
    }

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

    .contact-info-col h3 {
      font-size: 1.75rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .contact-info-col p {
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }

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

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .qr-card {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      padding: 16px;
      background: var(--bg-main);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      width: fit-content;
    }

    .qr-card img {
      width: 140px;
      height: 140px;
      border-radius: var(--radius-sm);
      margin-bottom: 8px;
    }

    .qr-card span {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    .form-col form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

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

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #ffffff;
      color: var(--text-main);
      transition: var(--transition-base);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }

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

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 10px;
    }

    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
      cursor: pointer;
      font-weight: 700;
      transition: var(--transition-base);
    }

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

    .float-qr-popup {
      display: none;
      background: #ffffff;
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-xl);
      border: 1px solid var(--border-color);
      text-align: center;
      width: 160px;
    }

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

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

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

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

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

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      color: #94a3b8;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

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

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      color: #64748b;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .friend-links a {
      color: #94a3b8;
    }

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

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        height: 64px;
      }
      .mobile-toggle {
        display: flex;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        width: 100%;
        padding: 12px 16px;
      }
      .header-actions .btn-primary {
        display: none;
      }
      h1.hero-title {
        font-size: 2rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .workflow-features {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .cases-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }