:root {
      --primary-color: #2563eb;
      --primary-hover: #1d4ed8;
      --rainbow-grad: linear-gradient(135deg, #ff5e62 0%, #ff9966 20%, #f9d423 40%, #00b09b 60%, #96c93d 80%, #00c6ff 100%);
      --rainbow-soft: linear-gradient(120deg, rgba(255, 94, 98, 0.08) 0%, rgba(249, 212, 35, 0.08) 30%, rgba(0, 198, 255, 0.08) 70%, rgba(150, 201, 61, 0.08) 100%);
      --rainbow-border: linear-gradient(90deg, #ff7675, #fab1a0, #ffeaa7, #55efc4, #81ecec, #74b9ff, #a29bfe);
      --bg-main: #fcfdfe;
      --bg-card: #ffffff;
      --bg-alt: #f8fafc;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(37, 99, 235, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background-color: var(--bg-main);
      background-image: 
        radial-gradient(at 0% 0%, rgba(255, 118, 117, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(116, 185, 255, 0.08) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(85, 239, 196, 0.05) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(255, 234, 167, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(162, 155, 254, 0.07) 0px, transparent 50%);
      background-attachment: fixed;
      overflow-x: hidden;
    }

    /* 统一全局容器 */
    .ai-container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部彩虹光效顶条 */
    .rainbow-top-bar {
      height: 4px;
      width: 100%;
      background: var(--rainbow-grad);
      position: sticky;
      top: 0;
      z-index: 1001;
    }

    /* 顶部导航 */
    .header-nav {
      position: sticky;
      top: 4px;
      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);
      z-index: 1000;
      transition: all 0.3s ease;
    }

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

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

    .brand-logo-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

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

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.5px;
      line-height: 1.2;
    }

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

    .nav-menu {
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      color: #334155;
      text-decoration: none;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }

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

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

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 50px;
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(255, 94, 98, 0.25);
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0, 198, 255, 0.35);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: #334155;
      padding: 6px;
    }

    /* 区块通用样式 */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-color);
      background: rgba(37, 99, 235, 0.08);
      border: 1px solid rgba(37, 99, 235, 0.18);
      border-radius: 50px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.3;
      margin-bottom: 14px;
    }

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

    /* 样式组件：彩虹边框卡片 */
    .rainbow-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
    }

    .rainbow-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--rainbow-border);
      opacity: 0.8;
      transition: opacity 0.3s ease;
    }

    .rainbow-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(37, 99, 235, 0.25);
    }

    /* 首屏 HERO (严格无图片，纯CSS动效与几何排版) */
    .hero-section {
      padding: 60px 0 80px 0;
      position: relative;
      overflow: hidden;
    }

    .hero-content-box {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 50px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-pill-badge {
      padding: 2px 8px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--rainbow-grad);
    }

    .hero-pill-text {
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
    }

    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }

    .hero-sub {
      font-size: 1.2rem;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 34px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 50px;
      text-decoration: none;
      box-shadow: 0 8px 25px rgba(255, 94, 98, 0.3);
      transition: all 0.3s ease;
      border: none;
    }

    .btn-hero-primary:hover {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 12px 30px rgba(0, 198, 255, 0.4);
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 30px;
      background: #ffffff;
      color: #1e293b;
      font-size: 1.02rem;
      font-weight: 600;
      border-radius: 50px;
      text-decoration: none;
      border: 1px solid #cbd5e1;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

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

    /* 首屏数据卡片阵列 (纯CSS) */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .stat-card {
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-4px);
    }

    .stat-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 4px;
    }

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

    /* 多模型生态徽标展区 */
    .model-chips-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.82rem;
      font-weight: 600;
      color: #334155;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      border-color: #6366f1;
      color: #4338ca;
      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: 1.6rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: #0f172a;
    }

    .about-feature-list {
      list-style: none;
      margin: 20px 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.96rem;
      color: #334155;
    }

    .about-feature-item svg {
      flex-shrink: 0;
      width: 20px;
      height: 20px;
      color: #10b981;
      margin-top: 3px;
    }

    .about-card-stack {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    /* 服务与创作场景 Grid */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--rainbow-soft);
      border: 1px solid rgba(0, 198, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--primary-color);
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #0f172a;
    }

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

    /* 行业解决方案与流程 */
    .solutions-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .timeline-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }

    .step-badge {
      display: inline-block;
      width: 32px;
      height: 32px;
      line-height: 32px;
      text-align: center;
      border-radius: 50%;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }

    .timeline-step-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #0f172a;
    }

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

    /* 案例展示板块 (包含真实素材图) */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .case-media-wrap {
      width: 100%;
      overflow: hidden;
      background: #f1f5f9;
      aspect-ratio: 16/10;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-media-wrap.square-wrap {
      aspect-ratio: 1/1;
    }

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

    .case-card:hover .case-media-wrap img {
      transform: scale(1.04);
    }

    .case-content {
      padding: 20px;
    }

    .case-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary-color);
      background: rgba(37, 99, 235, 0.08);
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 8px;
      display: inline-block;
    }

    .case-content h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: #0f172a;
    }

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

    /* 对比评测板块 */
    .review-score-hero {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 32px;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      margin-bottom: 30px;
    }

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

    .big-score-box {
      background: var(--rainbow-grad);
      color: #ffffff;
      padding: 16px 24px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .score-val {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-total {
      font-size: 0.9rem;
      opacity: 0.9;
    }

    .score-desc h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 4px;
    }

    .stars-row {
      color: #f59e0b;
      font-size: 1.25rem;
      margin-bottom: 4px;
    }

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

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

    .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: #0f172a;
    }

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

    .compare-table .highlight-col {
      background: rgba(37, 99, 235, 0.03);
      font-weight: 600;
      color: var(--primary-color);
    }

    /* 需求匹配与表单 */
    .form-section-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-info h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
    }

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

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: #1e293b;
      background: #f8fafc;
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: var(--rainbow-grad);
      color: #ffffff;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(255, 94, 98, 0.3);
      transition: all 0.3s ease;
    }

    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 198, 255, 0.4);
    }

    /* 用户评论板块 (6条评论) */
    .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-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .review-text {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

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

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-grad);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .reviewer-info h4 {
      font-size: 0.92rem;
      font-weight: 700;
      color: #0f172a;
    }

    .reviewer-info p {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* FAQ 手风琴 */
    .faq-accordion {
      max-width: 900px;
      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: all 0.2s ease;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 1.02rem;
      font-weight: 700;
      color: #0f172a;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary-color);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 18px 24px;
    }

    /* 行业资讯与文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
    }

    .article-card:hover {
      border-color: var(--primary-color);
      transform: translateY(-3px);
    }

    .article-card a {
      text-decoration: none;
      color: #0f172a;
      font-size: 1.05rem;
      font-weight: 700;
      display: block;
      margin-bottom: 8px;
    }

    .article-card a:hover {
      color: var(--primary-color);
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .poster-articles-box {
      background: #f8fafc;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-top: 20px;
    }

    /* 联系我们与客服二维码 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
    }

    .contact-qr-wrap {
      display: flex;
      align-items: center;
      gap: 24px;
      margin-top: 20px;
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
    }

    .contact-qr-img {
      width: 120px;
      height: 120px;
      background: #ffffff;
      padding: 6px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    /* 友情链接 */
    .friend-links-wrap {
      padding: 24px 0;
      border-top: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.9rem;
    }

    .friend-links-title {
      font-weight: 700;
      color: #334155;
    }

    .friend-links-wrap a {
      color: #64748b;
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .friend-links-wrap a:hover {
      color: var(--primary-color);
    }

    /* 页脚 Footer */
    footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 40px 0 24px 0;
      color: #64748b;
      font-size: 0.88rem;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 30px;
    }

    .footer-col h4 {
      color: #0f172a;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links a {
      color: #64748b;
      text-decoration: none;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
    }

    /* 悬浮工具组件 */
    .floating-tools {
      position: fixed;
      right: 24px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #334155;
      text-decoration: none;
      cursor: pointer;
      transition: all 0.2s ease;
    }

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

    /* 宣传图画廊组件 */
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }

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

    .banner-gallery-item .ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .services-grid,
      .cases-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solutions-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .form-section-wrap,
      .contact-grid,
      .footer-top {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        display: none;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.open {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 10px 0;
        width: 100%;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .solutions-timeline,
      .articles-grid,
      .banner-gallery-grid {
        grid-template-columns: 1fr;
      }
      .review-score-hero {
        flex-direction: column;
        align-items: flex-start;
      }
    }