:root {
      --primary: #0284c7;
      --primary-hover: #0369a1;
      --primary-light: #e0f2fe;
      --accent: #f59e0b;
      --accent-glow: #38bdf8;
      --vibrant-gradient: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #4f46e5 100%);
      --vibrant-subtle: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-main: #f8fafc;
      --bg-white: #ffffff;
      --card-border: #e2e8f0;
      --card-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --card-shadow-hover: 0 20px 30px -10px rgba(2, 132, 199, 0.16), 0 10px 15px -5px rgba(0, 0, 0, 0.06);
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

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

    body {
      background-color: var(--bg-main);
      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, transform 0.2s ease;
    }

    /* 统一主容器规范 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 导航栏 */
    .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(--card-border);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

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

    .brand-group {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .logo-box {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--vibrant-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .btn-accent {
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
      color: #ffffff;
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 13px;
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 17px;
      border-radius: var(--radius-md);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* 严禁首屏出现图片，纯CSS与高质感渐变打造极致鲜亮科技感首屏 */
    .hero-section {
      background: linear-gradient(180deg, #e0f2fe 0%, #f0fdfa 40%, #f8fafc 100%);
      padding: 60px 0 80px;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--card-border);
    }

    .hero-bg-shapes {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 1;
      overflow: hidden;
    }

    .shape-orb-1 {
      position: absolute;
      top: -10%;
      right: 5%;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, rgba(255, 255, 255, 0) 70%);
      border-radius: 50%;
    }

    .shape-orb-2 {
      position: absolute;
      bottom: 0%;
      left: -5%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
      border-radius: 50%;
    }

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

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(2, 132, 199, 0.2);
      border-radius: 999px;
      box-shadow: 0 4px 12px rgba(2, 132, 199, 0.08);
      margin-bottom: 24px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 19px;
      line-height: 1.6;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
    }

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

    .hero-features-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      text-align: left;
    }

    .hero-feat-card {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--card-border);
      padding: 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
    }

    .hero-feat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(2, 132, 199, 0.3);
    }

    .feat-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 12px;
    }

    .feat-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .feat-sub {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.5;
    }

    /* 区域通用样式 */
    .section {
      padding: 70px 0;
      position: relative;
    }

    .section-alt {
      background-color: #ffffff;
      border-top: 1px solid var(--card-border);
      border-bottom: 1px solid var(--card-border);
    }

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

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      border-radius: 999px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

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

    /* 模型标签云 */
    .models-cloud-wrap {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--card-shadow);
      margin-bottom: 40px;
    }

    .models-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-chip {
      padding: 8px 16px;
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-chip:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

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

    .service-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(2, 132, 199, 0.4);
    }

    .service-header-row {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 16px;
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
      border: 1px solid rgba(2, 132, 199, 0.2);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      flex-shrink: 0;
    }

    .service-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .service-tag-mini {
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      background: #f0fdf4;
      color: #16a34a;
      border: 1px solid #bbf7d0;
      font-weight: 600;
      display: inline-block;
    }

    .service-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .service-features-list {
      list-style: none;
      margin-bottom: 20px;
      border-top: 1px dashed var(--card-border);
      padding-top: 14px;
    }

    .service-features-list li {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-features-list li::before {
      content: "•";
      color: var(--primary);
      font-size: 18px;
      line-height: 1;
    }

    /* 行业解决方案 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .solution-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
      display: flex;
      gap: 24px;
    }

    .solution-icon-large {
      width: 64px;
      height: 64px;
      border-radius: 16px;
      background: var(--vibrant-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      flex-shrink: 0;
    }

    .solution-info h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .solution-info p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .solution-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .solution-tags span {
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 6px;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 600;
    }

    /* 对比评测模块 */
    .review-score-banner {
      background: var(--vibrant-gradient);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 14px 30px rgba(2, 132, 199, 0.25);
      margin-bottom: 36px;
    }

    .score-main-info {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-number {
      font-size: 54px;
      font-weight: 900;
      line-height: 1;
      color: #fef08a;
    }

    .score-meta h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 6px;
      color: #ffffff;
    }

    .stars-box {
      color: #facc15;
      font-size: 18px;
      letter-spacing: 2px;
    }

    .score-sub-text {
      max-width: 450px;
      font-size: 14px;
      line-height: 1.6;
      color: #e0f2fe;
    }

    .table-container {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--card-shadow);
    }

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

    .comparison-table th,
    .comparison-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--card-border);
      font-size: 14px;
    }

    .comparison-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
      font-size: 15px;
    }

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

    .comparison-table .highlight-col {
      background: #f0f9ff;
      color: var(--primary);
      font-weight: 700;
    }

    .tag-check {
      color: #16a34a;
      font-weight: bold;
    }

    .tag-cross {
      color: #dc2626;
    }

    /* 案例中心 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

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

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

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #e2e8f0;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    .case-item:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-desc-box {
      padding: 20px;
    }

    .case-tag {
      font-size: 12px;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 6px;
    }

    .case-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-sub {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 标准流程 4 步 */
    .process-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .process-step-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--card-shadow);
      position: relative;
    }

    .step-badge {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin: 0 auto 16px;
      box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    /* 加盟代理与被动收益 */
    .partner-banner {
      background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 44px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
    }

    .partner-content h3 {
      font-size: 26px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 14px;
    }

    .partner-content p {
      font-size: 15px;
      color: #94a3b8;
      line-height: 1.6;
      margin-bottom: 24px;
    }

    .partner-perks {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-bottom: 24px;
    }

    .partner-perk-item {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 12px 16px;
      border-radius: 8px;
      font-size: 13px;
      color: #f8fafc;
    }

    .partner-card-box {
      background: #ffffff;
      color: var(--text-main);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.2);
      text-align: center;
    }

    .partner-card-box h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #0f172a;
    }

    /* 客户口碑 6 条评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      position: relative;
    }

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

    .author-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .author-meta h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-meta p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 (>=10个) */
    .faq-container {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      transition: all 0.2s ease;
    }

    .faq-item:hover {
      border-color: rgba(2, 132, 199, 0.4);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 20px;
      border-top: 1px solid var(--card-border);
    }

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

    /* 需求表单与联系 */
    .contact-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--card-shadow);
    }

    .contact-info-col h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .contact-info-col p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 24px;
    }

    .contact-meta-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 24px;
    }

    .contact-meta-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-main);
    }

    .contact-icon-badge {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

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

    .qr-box {
      width: 90px;
      height: 90px;
      border-radius: 8px;
      overflow: hidden;
      background: #ffffff;
      padding: 4px;
      border: 1px solid var(--card-border);
    }

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

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

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }

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

    /* 行业资讯与文章 */
    .article-section-wrap {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
    }

    .article-dynamic-holder {
      background: #f8fafc;
      border: 1px dashed var(--primary);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      margin-bottom: 24px;
      font-size: 14px;
      color: var(--text-muted);
    }

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

    .article-link-item {
      padding: 12px 18px;
      background: #f8fafc;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s ease;
    }

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

    /* 页脚设计 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      border-top: 1px solid #1e293b;
      padding: 60px 0 24px;
      margin-top: auto;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }

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

    .footer-links-list li a {
      color: #94a3b8;
      font-size: 14px;
    }

    .footer-links-list li a:hover {
      color: #38bdf8;
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links-box a {
      display: inline-block;
      padding: 4px 10px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 4px;
      font-size: 12px;
      color: #cbd5e1;
    }

    .friend-links-box a:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: #64748b;
    }

    .footer-bottom a {
      color: #94a3b8;
    }

    /* 浮动客服与返回顶部 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--card-border);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      transition: all 0.25s ease;
      position: relative;
    }

    .float-btn:hover {
      transform: translateY(-3px);
      background: var(--primary);
      color: #ffffff;
    }

    .qr-popup {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 14px;
      box-shadow: var(--card-shadow-hover);
      width: 160px;
      text-align: center;
      display: none;
    }

    .qr-popup img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      margin-bottom: 6px;
    }

    .qr-popup span {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }

    .float-kefu:hover .qr-popup {
      display: block;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-features-grid,
      .services-grid,
      .case-gallery-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-banner {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--card-border);
        padding: 16px 20px;
        gap: 0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active li {
        width: 100%;
      }
      .nav-links.active li a {
        display: block;
        padding: 10px 14px;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-features-grid,
      .services-grid,
      .solution-grid,
      .process-steps-grid,
      .case-gallery-grid,
      .reviews-grid,
      .contact-form-grid,
      .article-links-list {
        grid-template-columns: 1fr;
      }
      .review-score-banner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }
      .score-main-info {
        flex-direction: column;
        gap: 10px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }