:root {
      --primary-grad: linear-gradient(135deg, #FF5E62 0%, #FF9966 25%, #FFD166 50%, #06D6A0 75%, #118AB2 100%);
      --rainbow-accent: linear-gradient(90deg, #ff4e50, #f9d423, #1dd1a1, #10ac84, #54a0ff, #5f27cd);
      --rainbow-soft: linear-gradient(120deg, rgba(255, 107, 107, 0.08), rgba(254, 202, 87, 0.08), rgba(72, 219, 251, 0.08), rgba(29, 209, 161, 0.08));
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #1e293b;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-rainbow: linear-gradient(90deg, #ff7675, #ffeaa7, #55efc4, #74b9ff, #a29bfe);
      --brand-blue: #0284c7;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.07), 0 8px 10px -6px rgba(0,0,0,0.04);
      --shadow-lg: 0 20px 30px -10px rgba(0,0,0,0.1);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      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);
      background-image: 
        radial-gradient(at 0% 0%, rgba(255, 154, 162, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(181, 234, 215, 0.15) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(226, 240, 203, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(199, 206, 234, 0.15) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(255, 218, 193, 0.15) 0px, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      line-height: 1.65;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    /* 顶部彩虹色条 */
    .top-rainbow-line {
      height: 4px;
      background: var(--rainbow-accent);
      width: 100%;
      position: sticky;
      top: 0;
      z-index: 1001;
    }

    /* 导航栏 */
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 4px;
      z-index: 1000;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

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

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

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

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 11px;
      background: linear-gradient(135deg, #e0f2fe, #f0fdf4);
      color: #0284c7;
      padding: 2px 8px;
      border-radius: 12px;
      border: 1px solid #bae6fd;
      font-weight: 600;
    }

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

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

    .nav-item {
      display: inline-block;
    }

    .nav-link {
      display: block;
      padding: 10px 14px;
      color: var(--text-main);
      text-decoration: none;
      font-size: 15px;
      font-weight: 600;
      transition: color 0.2s ease;
      position: relative;
    }

    .nav-link:hover {
      color: #0284c7;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 14px;
      right: 14px;
      height: 2px;
      background: var(--rainbow-accent);
      transform: scaleX(0);
      transition: transform 0.25s ease;
      transform-origin: center;
    }

    .nav-link:hover::after {
      transform: scaleX(1);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      text-decoration: none;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      line-height: 1.2;
    }

    .btn-rainbow {
      background: linear-gradient(135deg, #ff6b6b 0%, #ff9f43 30%, #10ac84 70%, #2e86de 100%);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(255, 107, 107, 0.25);
    }

    .btn-rainbow:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(46, 134, 222, 0.3);
      color: #ffffff;
    }

    .btn-secondary {
      background: #f1f5f9;
      color: #334155;
      border-color: #cbd5e1;
    }

    .btn-secondary:hover {
      background: #e2e8f0;
      color: #0f172a;
    }

    .btn-large {
      padding: 14px 32px;
      font-size: 16px;
      border-radius: 10px;
      font-weight: 700;
    }

    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
      padding: 4px;
    }

    /* 首屏 Hero (无图片规则严格执行) */
    .hero-section {
      padding: 60px 0 50px 0;
      position: relative;
      text-align: center;
      overflow: hidden;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #fed7aa;
      border-radius: 50px;
      box-shadow: 0 2px 10px rgba(251, 146, 60, 0.1);
      margin-bottom: 24px;
    }

    .rainbow-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--rainbow-accent);
      display: inline-block;
      animation: pulse 2s infinite;
    }

    .hero-badge-text {
      font-size: 13px;
      font-weight: 700;
      color: #c2410c;
      letter-spacing: 0.5px;
    }

    .hero-title {
      font-size: 38px;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .text-gradient {
      background: linear-gradient(120deg, #d946ef 0%, #ec4899 20%, #f97316 40%, #10b981 75%, #0284c7 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 840px;
      margin: 0 auto 32px auto;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .hero-highlight-pill {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
      padding: 16px 24px;
      background: #ffffff;
      border: 1px dashed #cbd5e1;
      border-radius: 12px;
      max-width: 900px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
    }

    .pill-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: #334155;
    }

    .pill-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #0284c7;
    }

    /* 数据指标网格 */
    .metrics-section {
      padding: 20px 0 40px 0;
    }

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

    .metric-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 24px;
      text-align: center;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

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

    .metric-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--rainbow-accent);
    }

    .metric-number {
      font-size: 34px;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
    }

    .metric-sub {
      font-size: 12px;
      color: var(--text-light);
      margin-top: 4px;
    }

    /* 模块通用样式 */
    .section-block {
      padding: 50px 0;
      border-bottom: 1px solid #f1f5f9;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 36px auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 20px;
      background: linear-gradient(135deg, #fef3c7, #fed7aa);
      color: #b45309;
      margin-bottom: 12px;
      border: 1px solid #fde68a;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 支持模型滚动/标签云 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .model-badge {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      color: #1e293b;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-badge:hover {
      border-color: #38bdf8;
      background: #f0f9ff;
      transform: translateY(-2px);
    }

    .badge-icon {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
    }

    /* 场景卡片网格 */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .feature-card {
      background: #ffffff;
      border-radius: 12px;
      padding: 24px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .feature-top {
      margin-bottom: 16px;
    }

    .feature-category {
      font-size: 12px;
      font-weight: 700;
      color: #0284c7;
      background: #e0f2fe;
      display: inline-block;
      padding: 3px 10px;
      border-radius: 6px;
      margin-bottom: 12px;
    }

    .feature-title {
      font-size: 18px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .feature-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .feature-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid #f1f5f9;
      padding-top: 12px;
      margin-top: 12px;
    }

    .feature-tag {
      font-size: 12px;
      color: #64748b;
    }

    .feature-link {
      font-size: 13px;
      font-weight: 600;
      color: #0284c7;
      text-decoration: none;
    }

    /* 平台核心能力介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: #ffffff;
      padding: 28px;
      border-radius: 14px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .intro-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .intro-icon {
      width: 12px;
      height: 12px;
      border-radius: 3px;
      background: var(--rainbow-accent);
      display: inline-block;
    }

    .intro-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      padding: 24px;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, #0284c7, #38bdf8);
      color: #ffffff;
      font-weight: 800;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格与评分卡片 */
    .evaluation-wrap {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .score-summary-bar {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      color: #ffffff;
      padding: 28px 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-left h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 6px;
      color: #ffffff;
    }

    .score-left p {
      font-size: 14px;
      color: #cbd5e1;
    }

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

    .star-rating {
      color: #facc15;
      font-size: 22px;
      letter-spacing: 2px;
    }

    .score-number-box {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 8px 18px;
      border-radius: 10px;
      text-align: center;
    }

    .score-big {
      font-size: 28px;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .score-total {
      font-size: 13px;
      color: #94a3b8;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #334155;
    }

    .highlight-col {
      background: rgba(2, 132, 199, 0.03);
      font-weight: 600;
      color: #0369a1;
    }

    .check-yes {
      color: #10b981;
      font-weight: bold;
    }

    .check-no {
      color: #94a3b8;
    }

    /* 案例展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .case-img-box {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f1f5f9;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .case-body {
      padding: 20px;
    }

    .case-cat {
      font-size: 12px;
      font-weight: 700;
      color: #f97316;
      background: #fff7ed;
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 8px;
    }

    .case-title {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

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

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border-radius: 12px;
      padding: 22px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #f59e0b;
      font-size: 14px;
      margin-bottom: 10px;
    }

    .review-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: normal;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 10px;
      border-top: 1px solid #f8fafc;
      padding-top: 12px;
    }

    .author-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, #a78bfa, #38bdf8);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }

    .author-info h4 {
      font-size: 14px;
      color: #0f172a;
      font-weight: 700;
    }

    .author-info p {
      font-size: 12px;
      color: #64748b;
    }

    /* 加盟代理板块 */
    .agent-card {
      background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
      border: 1px solid #bbf7d0;
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .agent-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .agent-feature-box {
      background: #ffffff;
      padding: 20px;
      border-radius: 10px;
      border: 1px solid #dcfce7;
    }

    .agent-feature-box h4 {
      font-size: 16px;
      font-weight: 700;
      color: #166534;
      margin-bottom: 8px;
    }

    .agent-feature-box p {
      font-size: 13px;
      color: #475569;
      line-height: 1.5;
    }

    /* 行业资讯与最新文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }

    .article-main-list {
      background: #ffffff;
      border-radius: 12px;
      padding: 24px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .article-item {
      padding: 16px 0;
      border-bottom: 1px dashed #e2e8f0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .article-item:last-child {
      border-bottom: none;
    }

    .article-link {
      font-size: 15px;
      font-weight: 600;
      color: #1e293b;
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .article-link:hover {
      color: #0284c7;
    }

    .article-date {
      font-size: 12px;
      color: #94a3b8;
      white-space: nowrap;
    }

    .article-side-card {
      background: #ffffff;
      border-radius: 12px;
      padding: 24px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .side-links-list {
      list-style: none;
      padding: 0;
      margin: 12px 0 0 0;
    }

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

    .side-links-list a {
      font-size: 13px;
      color: #475569;
      text-decoration: none;
      display: block;
      padding: 6px 10px;
      border-radius: 6px;
      background: #f8fafc;
      transition: all 0.2s ease;
    }

    .side-links-list a:hover {
      background: #e0f2fe;
      color: #0369a1;
    }

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

    .faq-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.2s ease;
    }

    .faq-item:hover {
      border-color: #cbd5e1;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      background: transparent;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.2s ease;
    }

    .faq-question:hover {
      background: #f8fafc;
    }

    .faq-icon {
      font-size: 18px;
      font-weight: 400;
      color: #64748b;
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: #0284c7;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px solid #f1f5f9;
      margin-top: 4px;
      padding-top: 12px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 需求匹配与联系我们（表单区） */
    .contact-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .contact-info-side {
      background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
      padding: 36px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-list {
      list-style: none;
      margin: 24px 0;
    }

    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 14px;
      color: #334155;
    }

    .contact-qr-box {
      background: #ffffff;
      padding: 16px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      gap: 16px;
      border: 1px solid #e2e8f0;
      max-width: 320px;
    }

    .contact-qr-img {
      width: 80px;
      height: 80px;
      object-fit: contain;
    }

    .contact-form-side {
      padding: 36px;
    }

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

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: #1e293b;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 14px;
      color: #0f172a;
      background: #ffffff;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-control:focus {
      outline: none;
      border-color: #0284c7;
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }

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

    /* 友情链接与媒体展示区 */
    .banner-media-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin-bottom: 30px;
    }

    .banner-media-item {
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid #e2e8f0;
      background: #ffffff;
      aspect-ratio: 16 / 9;
    }

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

    .friend-links-box {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      padding: 20px 24px;
      margin-bottom: 20px;
    }

    .friend-links-title {
      font-size: 14px;
      font-weight: 700;
      color: #475569;
      margin-bottom: 12px;
    }

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

    .friend-links-flex a {
      font-size: 13px;
      color: #64748b;
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .friend-links-flex a:hover {
      color: #0284c7;
      text-decoration: underline;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 30px 0;
      font-size: 13px;
      color: #64748b;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-left {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .ai-page-home-link {
      color: #0284c7;
      text-decoration: none;
      font-weight: 600;
    }

    .ai-page-home-link:hover {
      text-decoration: underline;
    }

    /* 浮动操作栏 */
    .floating-bar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #334155;
      text-decoration: none;
      cursor: pointer;
      transition: all 0.25s ease;
      font-size: 14px;
      font-weight: 700;
    }

    .float-btn:hover {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      transform: translateY(-2px);
    }

    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.15); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .feature-grid, .case-grid, .reviews-grid, .agent-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid, .metrics-grid, .banner-media-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        position: relative;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-container {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid #e2e8f0;
        padding: 16px;
        box-shadow: var(--shadow-lg);
      }
      .nav-container.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-link {
        padding: 10px 0;
        width: 100%;
      }
      .header-cta-group {
        display: none;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .feature-grid, .case-grid, .reviews-grid, .agent-grid, .intro-grid, .contact-wrap {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr 1fr;
      }
      .step-grid {
        grid-template-columns: 1fr;
      }
      .score-summary-bar {
        flex-direction: column;
        align-items: flex-start;
      }
    }