:root {
      --primary-color: #0F172A;
      --brand-blue: #1E40AF;
      --accent-orange: #FF4D2E;
      --accent-cyan: #06B6D4;
      --accent-purple: #7C3AED;
      --accent-yellow: #F59E0B;
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-alt: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --border-contrast: #CBD5E1;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 20px 30px -10px rgba(15, 23, 42, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid var(--border-color);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .ai-page-logo {
      height: 44px;
      width: auto;
      display: block;
    }

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

    .brand-tag {
      background: var(--accent-orange);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      margin-left: 6px;
    }

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

    .nav-item {
      display: block;
      padding: 10px 14px;
      font-size: 0.938rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-item:hover, .nav-item.active {
      color: var(--brand-blue);
      background-color: var(--bg-alt);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      font-weight: 700;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 2px solid transparent;
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .btn-primary {
      background-color: var(--accent-orange);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(255, 77, 46, 0.3);
    }

    .btn-primary:hover {
      background-color: #E03E20;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 77, 46, 0.4);
    }

    .btn-secondary {
      background-color: var(--brand-blue);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
    }

    .btn-secondary:hover {
      background-color: #172554;
      transform: translateY(-2px);
    }

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

    .btn-outline:hover {
      background-color: var(--primary-color);
      color: #ffffff;
    }

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

    /* 首屏 Hero（无图片，明艳撞色，科技纯CSS排版） */
    .hero-section {
      background: linear-gradient(135deg, #FFFFFF 0%, #EFF6FF 50%, #FFF7ED 100%);
      padding: 80px 0 70px;
      border-bottom: 2px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 2px solid var(--accent-orange);
      padding: 6px 16px;
      border-radius: 50px;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .badge-dot {
      width: 10px;
      height: 10px;
      background: var(--accent-orange);
      border-radius: 50%;
      animation: pulseDot 1.8s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.4); opacity: 0.6; }
    }

    .badge-text {
      font-size: 0.875rem;
      font-weight: 800;
      color: var(--accent-orange);
      letter-spacing: 0.5px;
    }

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

    .hero-title span.highlight-blue {
      color: var(--brand-blue);
      text-decoration: underline wavy var(--accent-orange);
      text-underline-offset: 8px;
    }

    .hero-subtitle {
      font-size: 1.125rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }

    .hero-highlight-btn {
      font-size: 1.1rem;
      padding: 14px 32px;
      background: var(--accent-orange);
      color: #FFFFFF;
      font-weight: 800;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 20px rgba(255, 77, 46, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .hero-highlight-btn:hover {
      background: #DE3414;
      transform: translateY(-3px);
      box-shadow: 0 12px 25px rgba(255, 77, 46, 0.5);
    }

    .hero-features-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      border-top: 1px dashed var(--border-contrast);
      padding-top: 24px;
    }

    .feature-item-pill {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary-color);
    }

    .feature-icon-check {
      width: 20px;
      height: 20px;
      background: #DCFCE7;
      color: #16A34A;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-size: 0.75rem;
      font-weight: 900;
    }

    .hero-visual-card {
      background: #FFFFFF;
      border: 3px solid var(--primary-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 12px 12px 0px var(--primary-color);
      position: relative;
    }

    .card-top-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 2px dashed var(--border-color);
    }

    .sys-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #FEF3C7;
      color: #B45309;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.813rem;
      font-weight: 800;
    }

    .metric-grid-2x2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .metric-box {
      background: var(--bg-alt);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px;
      transition: all 0.25s ease;
    }

    .metric-box:hover {
      border-color: var(--brand-blue);
      background: #FFFFFF;
      transform: translateY(-2px);
    }

    .metric-box.active-coral {
      background: #FFF1EE;
      border-color: var(--accent-orange);
    }

    .metric-val {
      font-size: 1.75rem;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .metric-box.active-coral .metric-val {
      color: var(--accent-orange);
    }

    .metric-lbl {
      font-size: 0.813rem;
      font-weight: 700;
      color: var(--text-muted);
    }

    /* Section 通用样式 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

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

    .section-tag {
      display: inline-block;
      background: var(--bg-alt);
      color: var(--brand-blue);
      font-size: 0.813rem;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 50px;
      margin-bottom: 12px;
      border: 1px solid var(--border-contrast);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .section-tag.tag-orange {
      background: #FFF1EE;
      color: var(--accent-orange);
      border-color: #FED7AA;
    }

    .section-tag.tag-purple {
      background: #F3E8FF;
      color: var(--accent-purple);
      border-color: #E9D5FF;
    }

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

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

    /* 平台介绍 & 核心能力 */
    .about-feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .intro-card:hover {
      border-color: var(--accent-orange);
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .intro-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: #EFF6FF;
      color: var(--brand-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      font-weight: 900;
    }

    .intro-card:nth-child(2) .intro-icon {
      background: #FFF1EE;
      color: var(--accent-orange);
    }

    .intro-card:nth-child(3) .intro-icon {
      background: #ECFEFF;
      color: var(--accent-cyan);
    }

    .intro-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--primary-color);
    }

    .intro-card p {
      color: var(--text-muted);
      font-size: 0.938rem;
      line-height: 1.65;
    }

    /* 服务能力卡片组 */
    .service-grid-3x3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      border-color: var(--brand-blue);
      box-shadow: 6px 6px 0px var(--brand-blue);
      transform: translateY(-4px);
    }

    .service-tag-mini {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 800;
      color: #FFFFFF;
      background: var(--primary-color);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--primary-color);
    }

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

    .service-points {
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .point-badge {
      background: var(--bg-alt);
      font-size: 0.75rem;
      color: var(--text-main);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 大模型聚合矩阵 */
    .model-tags-wrapper {
      background: #FFFFFF;
      border: 3px solid var(--primary-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 8px 8px 0px var(--accent-orange);
    }

    .model-tags-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }

    .model-pill {
      background: var(--bg-alt);
      border: 1px solid var(--border-contrast);
      padding: 8px 16px;
      border-radius: 50px;
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary-color);
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-pill:hover {
      background: var(--primary-color);
      color: #FFFFFF;
      transform: scale(1.05);
      border-color: var(--primary-color);
    }

    /* 对比评测版块 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #1E3A8A 0%, #0F172A 100%);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px;
      margin-bottom: 36px;
      display: grid;
      grid-template-columns: 1fr 1.5fr;
      gap: 32px;
      align-items: center;
    }

    .score-badge-large {
      text-align: center;
      background: rgba(255, 255, 255, 0.1);
      border: 2px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-md);
      padding: 30px;
      backdrop-filter: blur(8px);
    }

    .score-num {
      font-size: 4rem;
      font-weight: 900;
      color: #FBBF24;
      line-height: 1;
      margin-bottom: 6px;
    }

    .score-total {
      font-size: 1.125rem;
      color: #E2E8F0;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .stars-render {
      color: #F59E0B;
      font-size: 1.5rem;
      letter-spacing: 4px;
    }

    .eval-meta h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: #FFFFFF;
    }

    .eval-meta p {
      font-size: 0.95rem;
      color: #CBD5E1;
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .eval-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .eval-tag-item {
      background: var(--accent-orange);
      color: #FFFFFF;
      font-size: 0.813rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
    }

    .comparison-table-wrap {
      overflow-x: auto;
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .comp-table th, .comp-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.938rem;
    }

    .comp-table th {
      background: var(--bg-alt);
      font-weight: 800;
      color: var(--primary-color);
    }

    .comp-table td.col-brand {
      background: #FEF3C7;
      font-weight: 800;
      color: var(--primary-color);
    }

    .check-yes {
      color: #16A34A;
      font-weight: 800;
    }

    .cross-no {
      color: #DC2626;
      font-weight: 800;
    }

    /* 行业方案与流程 */
    .step-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      transition: all 0.25s ease;
    }

    .step-card:hover {
      border-color: var(--accent-orange);
      transform: translateY(-4px);
    }

    .step-num-badge {
      width: 38px;
      height: 38px;
      background: var(--primary-color);
      color: #FFFFFF;
      font-size: 1.125rem;
      font-weight: 900;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      margin-bottom: 16px;
    }

    .step-card:nth-child(2) .step-num-badge {
      background: var(--brand-blue);
    }

    .step-card:nth-child(3) .step-num-badge {
      background: var(--accent-orange);
    }

    .step-card:nth-child(4) .step-num-badge {
      background: var(--accent-purple);
    }

    .step-card h3 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--primary-color);
    }

    .step-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例展示区域与媒体资源展示 */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .media-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

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

    .media-thumb-box {
      width: 100%;
      background: #F1F5F9;
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-thumb-box.square-box {
      aspect-ratio: 1 / 1;
    }

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

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

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

    .media-content h3 {
      font-size: 1.05rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--primary-color);
    }

    .media-content p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

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

    .banner-img-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 2px solid var(--border-color);
      background: #FFFFFF;
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 加盟代理与被动收益 */
    .agent-box-wrap {
      background: linear-gradient(135deg, #FFF7ED 0%, #FEF2F2 100%);
      border: 3px solid var(--accent-orange);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
      box-shadow: 8px 8px 0px var(--primary-color);
    }

    .agent-info h3 {
      font-size: 1.75rem;
      font-weight: 900;
      color: var(--primary-color);
      margin-bottom: 14px;
    }

    .agent-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .agent-benefits {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-bottom: 24px;
    }

    .benefit-item {
      background: #FFFFFF;
      border: 1px solid #FED7AA;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .agent-cta-card {
      background: #FFFFFF;
      border: 2px solid var(--primary-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }

    .agent-cta-card h4 {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 8px;
    }

    .agent-cta-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 18px;
    }

    /* 用户评论 */
    .reviews-grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }

    .review-card:hover {
      border-color: var(--brand-blue);
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }

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

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      background: var(--bg-alt);
      border: 2px solid var(--border-contrast);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--brand-blue);
      font-size: 1rem;
    }

    .reviewer-meta h4 {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--primary-color);
    }

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

    .review-text {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 14px;
      flex-grow: 1;
    }

    .review-rating {
      color: #F59E0B;
      font-size: 0.875rem;
    }

    /* 最新文章与资讯 */
    .article-section-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
    }

    .article-dynamic-container {
      background: var(--bg-alt);
      border-radius: var(--radius-md);
      padding: 20px;
      margin-bottom: 24px;
      border: 1px dashed var(--border-contrast);
    }

    .article-links-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .art-link-item {
      display: flex;
      align-items: center;
      gap: 10px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary-color);
      transition: all 0.2s ease;
    }

    .art-link-item:hover {
      border-color: var(--brand-blue);
      color: var(--brand-blue);
      background: #EFF6FF;
      transform: translateX(4px);
    }

    /* 表单与联系模块 */
    .contact-form-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      background: #FFFFFF;
      border: 3px solid var(--primary-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 10px 10px 0px var(--accent-orange);
    }

    .form-wrapper {
      padding: 40px;
    }

    .form-wrapper h3 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 8px;
    }

    .form-wrapper p {
      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: 700;
      color: var(--primary-color);
      margin-bottom: 6px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.938rem;
      color: var(--primary-color);
      background: var(--bg-main);
      transition: border-color 0.2s ease;
      outline: none;
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--brand-blue);
      background: #FFFFFF;
    }

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

    .contact-info-panel {
      background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
      color: #FFFFFF;
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-panel h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: #FFFFFF;
    }

    .contact-details-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 24px;
    }

    .contact-detail-row {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.9rem;
      color: #E2E8F0;
    }

    .contact-detail-row strong {
      color: #93C5FD;
      min-width: 70px;
    }

    .qr-box-wrap {
      background: #FFFFFF;
      padding: 16px;
      border-radius: var(--radius-md);
      text-align: center;
      width: fit-content;
      margin-top: auto;
    }

    .qr-box-wrap img {
      width: 120px;
      height: 120px;
      display: block;
      margin: 0 auto 8px;
    }

    .qr-box-wrap span {
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--primary-color);
      display: block;
    }

    /* FAQ 手风琴 */
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-item:hover {
      border-color: var(--brand-blue);
    }

    .faq-question {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--primary-color);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-family: inherit;
    }

    .faq-icon {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--brand-blue);
      transition: transform 0.3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      color: var(--accent-orange);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.938rem;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

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

    /* 页脚 */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 60px 0 30px;
      border-top: 4px solid var(--accent-orange);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 0.875rem;
      line-height: 1.65;
      margin-bottom: 16px;
      color: #94A3B8;
    }

    .footer-links-col h5 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .footer-links-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-col a {
      color: #94A3B8;
      font-size: 0.875rem;
    }

    .footer-links-col a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }

    .friend-links-wrap {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-wrap h5 {
      color: #CBD5E1;
      font-size: 0.875rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

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

    .friend-links-flex a {
      color: #94A3B8;
      font-size: 0.813rem;
      background: #1E293B;
      padding: 4px 10px;
      border-radius: 4px;
      transition: all 0.2s ease;
    }

    .friend-links-flex a:hover {
      background: var(--brand-blue);
      color: #FFFFFF;
    }

    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.813rem;
      color: #64748B;
    }

    .ai-page-home-link {
      color: #93C5FD;
      font-weight: 700;
    }

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

    /* 浮动操作条 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFFFFF;
      border: 2px solid var(--primary-color);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      cursor: pointer;
      box-shadow: var(--shadow-md);
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      background: var(--accent-orange);
      color: #FFFFFF;
      border-color: var(--accent-orange);
      transform: scale(1.1);
    }

    .float-btn.back-top {
      display: none;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .service-grid-3x3, .about-feature-grid, .reviews-grid-3x2, .media-showcase-grid, .banner-tri-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .eval-highlight-box, .agent-box-wrap, .contact-form-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid var(--border-color);
        box-shadow: var(--shadow-lg);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .service-grid-3x3, .about-feature-grid, .reviews-grid-3x2, .step-grid-4, .media-showcase-grid, .banner-tri-grid, .article-links-list {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .form-wrapper, .contact-info-panel {
        padding: 24px;
      }
    }