:root {
      --primary-start: #2563eb;
      --primary-end: #7c3aed;
      --accent-coral: #f97316;
      --accent-cyan: #06b6d4;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #93c5fd;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(37, 99, 235, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(124, 58, 237, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.03) 0%, transparent 60%);
      background-attachment: fixed;
    }

    a {
      color: var(--primary-start);
      text-decoration: none;
      transition: var(--transition);
    }

    a:hover {
      color: var(--primary-end);
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }

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

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

    .brand-logo-wrap {
      display: flex;
      align-items: center;
      max-height: 42px;
      overflow: hidden;
    }

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, #1e40af, #7c3aed);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.925rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
      color: #ffffff !important;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(37, 99, 235, 0.38);
    }

    .btn-outline {
      background: #ffffff;
      border-color: #cbd5e1;
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--primary-start);
      color: var(--primary-start);
      background: rgba(37, 99, 235, 0.04);
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.85rem;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero 区（无图片纯 CSS 渐变几何设计） */
    .hero-section {
      position: relative;
      padding: 70px 0 50px 0;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(239, 246, 255, 0.6) 0%, rgba(248, 250, 252, 0) 100%);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }

    .hero-container {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: linear-gradient(90deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
      border: 1px solid rgba(124, 58, 237, 0.2);
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      font-weight: 600;
      color: #4338ca;
      margin-bottom: 24px;
    }

    .hero-badge-pulse {
      width: 8px;
      height: 8px;
      background-color: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
      letter-spacing: -0.8px;
    }

    .hero-title .highlight {
      background: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #f97316 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 820px;
      margin: 0 auto 36px auto;
    }

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

    .btn-hero-primary {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: var(--radius-full);
      background: linear-gradient(135deg, #2563eb 0%, #6366f1 50%, #ec4899 100%);
      color: #ffffff !important;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(99, 102, 241, 0.35);
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 30px rgba(99, 102, 241, 0.45);
    }

    .btn-hero-sub {
      padding: 14px 30px;
      font-size: 1.05rem;
      border-radius: var(--radius-full);
      background: #ffffff;
      color: #1e293b;
      border: 1px solid #cbd5e1;
      box-shadow: var(--shadow-sm);
    }

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

    /* 核心指标卡片 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 10px;
    }

    .stat-card {
      background: #ffffff;
      padding: 22px 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }

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

    .stat-number {
      font-size: 1.85rem;
      font-weight: 800;
      color: #1e40af;
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 2px;
    }

    .stat-number span {
      font-size: 1.1rem;
      color: #ec4899;
    }

    .stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用Section结构 */
    .section {
      padding: 70px 0;
      position: relative;
    }

    .section-alt {
      background-color: #ffffff;
      border-top: 1px solid #f1f5f9;
      border-bottom: 1px solid #f1f5f9;
    }

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

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(37, 99, 235, 0.08);
      color: #2563eb;
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

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

    /* 卡片网格体系 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .feature-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #bfdbfe;
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(124, 58, 237, 0.12));
      color: var(--primary-start);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 18px;
    }

    .feature-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .feature-card-footer {
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px dashed var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: var(--primary-start);
      font-weight: 600;
    }

    /* 多模型生态展示条 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }

    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-pill::before {
      content: "";
      display: inline-block;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #3b82f6;
    }

    .model-pill:hover {
      border-color: var(--primary-start);
      color: var(--primary-start);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    /* 流程步骤体系 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-timeline::before {
      content: "";
      position: absolute;
      top: 36px;
      left: 10%;
      right: 10%;
      height: 2px;
      background: linear-gradient(90deg, #2563eb, #7c3aed, #06b6d4, #10b981);
      z-index: 1;
    }

    .process-step {
      position: relative;
      z-index: 2;
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .step-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测板块 */
    .review-score-panel {
      background: linear-gradient(135deg, #1e293b, #0f172a);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

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

    .big-score-num {
      font-size: 3.8rem;
      font-weight: 900;
      line-height: 1;
      color: #38bdf8;
      font-family: Arial, sans-serif;
    }

    .score-detail-text h3 {
      font-size: 1.35rem;
      margin-bottom: 6px;
      color: #f8fafc;
    }

    .score-stars {
      color: #fbbf24;
      font-size: 1.25rem;
      letter-spacing: 2px;
      margin-bottom: 4px;
    }

    .score-tags-area {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      max-width: 500px;
    }

    .score-tag-item {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      color: #e2e8f0;
    }

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

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

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

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

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

    .col-highlight {
      background: rgba(37, 99, 235, 0.03);
      font-weight: 700;
      color: #1e40af;
    }

    .badge-check {
      display: inline-block;
      color: #16a34a;
      font-weight: 800;
      margin-right: 4px;
    }

    .badge-cross {
      display: inline-block;
      color: #dc2626;
      font-weight: 800;
      margin-right: 4px;
    }

    /* 案例图片展示区 */
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

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

    .media-card-img-wrap.square {
      aspect-ratio: 1 / 1;
      max-height: 280px;
    }

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

    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.03);
    }

    .media-card-body {
      padding: 20px;
      flex-grow: 1;
    }

    .media-card-tag {
      font-size: 0.8rem;
      color: var(--primary-start);
      font-weight: 700;
      margin-bottom: 6px;
    }

    .media-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .media-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      box-shadow: var(--shadow-md);
      border-color: #bfdbfe;
    }

    .review-text {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: italic;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #3b82f6, #8b5cf6);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .reviewer-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-list {
      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: var(--transition);
    }

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

    .faq-question {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary-start);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, padding 0.3s ease;
      background: #f8fafc;
      border-top: 1px solid transparent;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px 20px 24px;
      border-top-color: #f1f5f9;
    }

    .faq-answer p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 表单与联系模块 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-heading {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .contact-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .contact-meta-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

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

    .contact-meta-label {
      font-weight: 700;
      color: #334155;
      min-width: 80px;
    }

    .qr-container {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #f8fafc;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
    }

    .qr-img-box {
      width: 80px;
      height: 80px;
      flex-shrink: 0;
      background: #ffffff;
      padding: 4px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
    }

    .qr-img-box img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .qr-text h5 {
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .qr-text p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 表单组件 */
    .form-panel {
      background: #f8fafc;
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
    }

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

    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
      background: #ffffff;
      font-size: 0.95rem;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary-start);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

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

    .form-submit-btn {
      width: 100%;
      padding: 13px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
      color: #ffffff;
      border: none;
      cursor: pointer;
      transition: var(--transition);
    }

    .form-submit-btn:hover {
      opacity: 0.95;
      transform: translateY(-2px);
    }

    /* 行业资讯 / 最新文章 */
    .article-wrap-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
    }

    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 16px;
    }

    .article-link-item {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 12px 16px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-main);
      transition: var(--transition);
    }

    .article-link-item:hover {
      background: #eff6ff;
      border-color: #bfdbfe;
      color: var(--primary-start);
      transform: translateX(4px);
    }

    /* Banner 宣传图展示栏 */
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 30px;
    }

    .banner-gallery-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      aspect-ratio: 16 / 10;
      background: #f1f5f9;
    }

    .banner-gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .banner-gallery-item:hover img {
      transform: scale(1.04);
    }

    /* 统一规范的页脚系统 */
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 50px 0 24px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-main-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 0.875rem;
      line-height: 1.7;
      color: #94a3b8;
    }

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

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.875rem;
    }

    .footer-links-list a:hover {
      color: #ffffff;
    }

    .friend-links-box {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.875rem;
      font-weight: 700;
      color: #cbd5e1;
      margin-bottom: 12px;
    }

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

    .friend-links-flex a {
      color: #94a3b8;
      font-size: 0.85rem;
      transition: var(--transition);
    }

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

    .footer-bottom-bar {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.8rem;
    }

    /* 悬浮客服挂件 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: #1e293b;
      box-shadow: var(--shadow-lg);
      border: 1px solid #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      position: relative;
    }

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

    .float-btn-kefu:hover .kefu-popover {
      display: block;
    }

    .kefu-popover {
      display: none;
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-xl);
      border: 1px solid #cbd5e1;
      width: 170px;
      text-align: center;
      color: var(--text-main);
    }

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

    .kefu-popover span {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 响应式断点适配 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline::before {
        display: none;
      }
      .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .banner-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .site-header {
        padding: 0;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        box-shadow: var(--shadow-lg);
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 16px;
        border-bottom: 1px solid #f1f5f9;
      }
      .header-actions {
        display: none;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .grid-3, .grid-4, .grid-2, .media-card-grid, .review-grid, .article-links-grid, .banner-gallery-grid {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .review-score-panel {
        flex-direction: column;
        text-align: center;
      }
      .score-badge-area {
        flex-direction: column;
      }
      .footer-bottom-bar {
        flex-direction: column;
        text-align: center;
      }
    }