:root {
      --primary: #4f46e5;
      --primary-accent: #6366f1;
      --vibrant-pink: #ec4899;
      --vibrant-cyan: #06b6d4;
      --vibrant-amber: #f59e0b;
      --vibrant-purple: #8b5cf6;
      --vibrant-gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f59e0b 100%);
      --gradient-subtle: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 25px -5px rgba(79, 70, 229, 0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
      --shadow-lg: 0 20px 30px -10px rgba(99, 102, 241, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-max: 1200px;
    }

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

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

    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .brand-logo-area img.ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }
    .brand-title-wrap {
      display: flex;
      flex-direction: column;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: linear-gradient(120deg, #4f46e5, #ec4899);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-subtitle {
      font-size: 0.72rem;
      color: var(--text-muted);
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: all 0.2s ease;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.92rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--vibrant-gradient);
      border-radius: 999px;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      border: none;
      cursor: pointer;
    }
    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.45);
      color: #ffffff;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 8px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 视觉共用组件 */
    .section-spacing {
      padding: 80px 0;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      color: #ffffff;
      background: linear-gradient(90deg, #ec4899, #8b5cf6);
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 12px;
      box-shadow: 0 2px 8px rgba(236, 72, 153, 0.25);
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 首屏 Hero - 无图片约束 */
    .hero-section {
      background: linear-gradient(180deg, #ffffff 0%, #f3f4f6 100%);
      padding: 80px 0 90px 0;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-container {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #eef2ff;
      border: 1px solid #c7d2fe;
      color: #4338ca;
      font-size: 0.9rem;
      font-weight: 700;
      padding: 6px 18px;
      border-radius: 999px;
      margin-bottom: 24px;
    }
    .hero-badge span.pulse-dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
    }
    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      letter-spacing: -1px;
      margin-bottom: 20px;
    }
    .hero-h1 .gradient-text {
      background: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f59e0b 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .btn-main-hero {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 16px 36px;
      font-size: 1.1rem;
      font-weight: 800;
      color: #ffffff;
      background: var(--vibrant-gradient);
      border-radius: 999px;
      box-shadow: 0 8px 25px rgba(236, 72, 153, 0.35);
      transition: all 0.25s ease;
      border: none;
    }
    .btn-main-hero:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 30px rgba(236, 72, 153, 0.5);
      color: #ffffff;
    }
    .btn-sub-hero {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 16px 32px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #1e293b;
      background: #ffffff;
      border: 2px solid #cbd5e1;
      border-radius: 999px;
      transition: all 0.2s ease;
    }
    .btn-sub-hero:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f8fafc;
      transform: translateY(-2px);
    }
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--vibrant-gradient);
    }
    .metric-value {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 模型矩阵徽章展示 */
    .model-strip {
      background: #ffffff;
      padding: 30px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .model-strip-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .model-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-tag {
      background: #f1f5f9;
      color: #334155;
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 999px;
      border: 1px solid #e2e8f0;
      transition: all 0.2s ease;
    }
    .model-tag:hover {
      background: #e0e7ff;
      color: #4338ca;
      border-color: #c7d2fe;
      transform: translateY(-1px);
    }

    /* 平台介绍板块 */
    .platform-intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .intro-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .intro-content p {
      color: var(--text-muted);
      font-size: 1.02rem;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .intro-feature-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 28px;
    }
    .feature-item-pill {
      display: flex;
      align-items: center;
      gap: 10px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      color: #1e293b;
      box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    }
    .feature-item-pill svg {
      width: 20px;
      height: 20px;
      color: var(--vibrant-pink);
      flex-shrink: 0;
    }
    .intro-visual-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 14px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .media-card-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #e2e8f0;
      aspect-ratio: 16/9;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-card-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    /* 场景卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .service-badge-pill {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 6px;
      margin-bottom: 16px;
      background: #eef2ff;
      color: var(--primary);
    }
    .service-card h4 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .service-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .service-card-footer {
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
    }

    /* 横幅展示区 (图文宣传) */
    .banner-media-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .media-gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .gallery-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      background: #f1f5f9;
      aspect-ratio: 16/10;
    }
    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }
    .gallery-item:hover img {
      transform: scale(1.05);
    }

    /* 流程步骤 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 14px;
      background: var(--vibrant-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .step-card h4 {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 对比评测 - 突出要求 */
    .review-score-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 15px 35px rgba(49, 46, 129, 0.3);
    }
    .review-summary-left {
      max-width: 600px;
    }
    .review-summary-left h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: #ffffff;
    }
    .review-summary-left p {
      font-size: 1rem;
      color: #c7d2fe;
      line-height: 1.6;
    }
    .review-badge-group {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-top: 14px;
    }
    .star-rating-box {
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 6px 14px;
      border-radius: 999px;
      font-weight: 800;
      font-size: 0.92rem;
      color: #fbbf24;
    }
    .score-circle-area {
      text-align: center;
      background: #ffffff;
      color: #0f172a;
      padding: 20px 32px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    }
    .score-big {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1;
      color: #ec4899;
    }
    .score-total {
      font-size: 0.95rem;
      font-weight: 700;
      color: #64748b;
      margin-top: 4px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 700px;
    }
    .comparison-table th, .comparison-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.96rem;
    }
    .comparison-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--text-main);
    }
    .comparison-table tr:last-child td {
      border-bottom: none;
    }
    .table-col-highlight {
      background: #faf5ff;
      font-weight: 700;
      color: #6b21a8;
    }
    .check-icon {
      color: #10b981;
      font-weight: 800;
      margin-right: 6px;
    }
    .cross-icon {
      color: #ef4444;
      font-weight: 800;
      margin-right: 6px;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-content {
      font-size: 0.96rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .review-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }
    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--vibrant-gradient);
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .review-author h5 {
      font-size: 0.98rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .review-author span {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* FAQ 手风琴 */
    .faq-container-box {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
      transition: background 0.2s ease;
    }
    .faq-question:hover {
      background: #f8fafc;
      color: var(--primary);
    }
    .faq-icon {
      font-size: 1.3rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #ffffff;
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.75;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px 24px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--vibrant-pink);
    }

    /* 需求匹配与表单板块 */
    .form-section-wrap {
      background: linear-gradient(135deg, #f0fdf4 0%, #eff6ff 100%);
      border: 1px solid #dbeafe;
      border-radius: var(--radius-lg);
      padding: 50px;
      box-shadow: var(--shadow-md);
    }
    .form-grid-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .form-text-side h3 {
      font-size: 2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .form-text-side p {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
      font-size: 0.96rem;
      font-weight: 600;
      color: #334155;
    }
    .custom-form-card {
      background: #ffffff;
      padding: 36px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #f8fafc;
      color: var(--text-main);
      transition: all 0.2s ease;
      font-family: inherit;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    select.form-control {
      cursor: pointer;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }
    .btn-submit-form {
      width: 100%;
      padding: 14px;
      font-size: 1.05rem;
      font-weight: 800;
      color: #ffffff;
      background: var(--vibrant-gradient);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
      transition: all 0.2s ease;
    }
    .btn-submit-form:hover {
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.45);
      transform: translateY(-2px);
    }

    /* 行业资讯与文章动态 */
    .article-section-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 40px;
    }
    .article-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 16px;
    }
    .article-link-tag {
      background: #f1f5f9;
      color: #2563eb;
      font-size: 0.9rem;
      font-weight: 600;
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }
    .article-link-tag:hover {
      background: #dbeafe;
      color: #1d4ed8;
      text-decoration: underline;
    }

    /* 页脚与系统区 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
      margin-top: auto;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 0.9rem;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list li a {
      color: #94a3b8;
      font-size: 0.9rem;
      transition: color 0.2s ease;
    }
    .footer-links-list li a:hover {
      color: #38bdf8;
    }
    .qrcode-box {
      display: inline-block;
      background: #ffffff;
      padding: 8px;
      border-radius: var(--radius-sm);
      margin-top: 10px;
    }
    .qrcode-box img {
      width: 90px;
      height: 90px;
      display: block;
    }
    .friend-links-bar {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 20px;
      font-size: 0.88rem;
      color: #94a3b8;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }
    .friend-links-bar a {
      color: #cbd5e1;
      text-decoration: none;
    }
    .friend-links-bar a:hover {
      color: #38bdf8;
    }
    .copyright-bar {
      border-top: 1px solid #1e293b;
      margin-top: 24px;
      padding-top: 20px;
      text-align: center;
      font-size: 0.84rem;
      color: #64748b;
    }

    /* 悬浮客服面板 */
    .floating-kefu-dock {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .kefu-btn-circle {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--vibrant-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.4);
      cursor: pointer;
      border: none;
      position: relative;
    }
    .kefu-hover-card {
      position: absolute;
      right: 64px;
      bottom: 0;
      background: #ffffff;
      color: #0f172a;
      padding: 16px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      border: 1px solid var(--border-color);
      display: none;
      width: 180px;
      text-align: center;
    }
    .kefu-btn-circle:hover .kefu-hover-card {
      display: block;
    }
    .kefu-hover-card img {
      width: 140px;
      height: 140px;
      display: block;
      margin: 0 auto 8px auto;
    }
    .kefu-hover-card p {
      font-size: 0.85rem;
      font-weight: 700;
      color: #334155;
    }
    .scroll-top-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: #475569;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-sm);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .scroll-top-btn:hover {
      background: #f1f5f9;
      color: var(--primary);
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .services-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2.1rem;
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .platform-intro-grid, .form-grid-inner {
        grid-template-columns: 1fr;
      }
      .services-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .media-gallery-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .review-score-banner {
        flex-direction: column;
        gap: 24px;
        text-align: center;
        padding: 28px 20px;
      }
      .review-badge-group {
        justify-content: center;
      }
      .form-section-wrap {
        padding: 24px;
      }
      .custom-form-card {
        padding: 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }