:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --accent-coral: #ff5757;
      --accent-cyan: #06b6d4;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --accent-violet: #8b5cf6;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #c7d2fe;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(79, 70, 229, 0.12), 0 10px 10px -5px rgba(79, 70, 229, 0.04);
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-pill: 9999px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    *, *::before, *::after {
      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-base);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      position: relative;
    }

    /* 斑斓彩调全局底色氛围 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: 
        radial-gradient(circle at 10% 15%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 30%, rgba(6, 182, 212, 0.05) 0%, transparent 35%),
        radial-gradient(circle at 50% 80%, rgba(245, 158, 11, 0.04) 0%, transparent 45%),
        radial-gradient(circle at 80% 90%, rgba(255, 87, 87, 0.04) 0%, transparent 40%);
      pointer-events: none;
      z-index: -1;
    }

    /* 统一容器标准规范 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

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

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.2;
    }

    .brand-tag {
      font-size: 0.72rem;
      color: var(--primary);
      font-weight: 600;
      letter-spacing: 0.5px;
    }

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

    .nav-item a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
    }

    .nav-item a:hover {
      color: var(--primary);
      background-color: rgba(79, 70, 229, 0.06);
    }

    .nav-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-pill);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
      color: #ffffff;
    }

    .btn-outline {
      background-color: #ffffff;
      color: var(--primary);
      border-color: #c7d2fe;
    }

    .btn-outline:hover {
      background-color: #f5f3ff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

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

    /* 区域通用样式 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

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

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(6, 182, 212, 0.08));
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: var(--radius-pill);
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Hero 首屏 - 纯 CSS 科技美学，无图片 */
    .hero-section {
      padding: 90px 0 70px 0;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.85) 0%, rgba(248, 250, 252, 0.95) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-container {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge-wrap {
      margin-bottom: 24px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 20px;
      background: #ffffff;
      border: 1px solid #e0e7ff;
      border-radius: var(--radius-pill);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--accent-emerald);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 24px;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .btn-hero-portal {
      font-size: 1.05rem;
      padding: 14px 34px;
      background: linear-gradient(135deg, #ff5757 0%, #f59e0b 100%);
      color: #ffffff;
      box-shadow: 0 6px 18px rgba(255, 87, 87, 0.28);
    }

    .btn-hero-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(255, 87, 87, 0.38);
      color: #ffffff;
    }

    .btn-hero-primary {
      font-size: 1.05rem;
      padding: 14px 34px;
    }

    .hero-indicators {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      padding-top: 36px;
      border-top: 1px dashed var(--border-color);
    }

    .indicator-box {
      background: #ffffff;
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .indicator-box:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }

    .indicator-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .indicator-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 矩阵支持标签云 */
    .models-marquee-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px 30px;
      box-shadow: var(--shadow-sm);
      margin-top: 36px;
      text-align: center;
    }

    .models-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-light);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 16px;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-tag {
      padding: 6px 14px;
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--text-main);
      background-color: #f1f5f9;
      border-radius: var(--radius-pill);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-tag:hover {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
      color: var(--primary);
      border-color: var(--border-focus);
      transform: translateY(-2px);
    }

    /* 关于我们 & 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-text-col p {
      font-size: 1.02rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.75;
    }

    .feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .check-icon {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #e0e7ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: bold;
      flex-shrink: 0;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 12px;
      box-shadow: var(--shadow-md);
      transition: var(--transition);
      overflow: hidden;
    }

    .media-card:hover {
      box-shadow: var(--shadow-hover);
    }

    .media-card img {
      border-radius: var(--radius-md);
      width: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .media-card:hover img {
      transform: scale(1.02);
    }

    /* 服务能力卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--accent-color, var(--primary)), transparent);
    }

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

    .service-icon-wrap {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-md);
      background-color: var(--icon-bg, #eef2ff);
      color: var(--accent-color, var(--primary));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
      margin-bottom: 18px;
    }

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

    /* 行业解决方案 */
    .solution-tabs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .solution-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border-left: 4px solid var(--primary);
    }

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

    .solution-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .solution-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 一站式标准流程 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .flow-step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .flow-step-item:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .flow-step-num {
      width: 36px;
      height: 36px;
      margin: 0 auto 14px auto;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
    }

    .flow-step-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .flow-step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测卡片与表格 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #ffffff 0%, #f5f3ff 100%);
      border: 1px solid #c7d2fe;
      border-radius: var(--radius-lg);
      padding: 32px;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-md);
      flex-wrap: wrap;
      gap: 24px;
    }

    .eval-info-left {
      max-width: 600px;
    }

    .eval-badge {
      display: inline-block;
      padding: 4px 12px;
      background: #e0e7ff;
      color: var(--primary);
      font-weight: 700;
      border-radius: var(--radius-pill);
      font-size: 0.8rem;
      margin-bottom: 10px;
    }

    .eval-title {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .eval-score-card {
      display: flex;
      align-items: center;
      gap: 20px;
      background: #ffffff;
      padding: 18px 28px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .eval-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--accent-coral);
      line-height: 1;
    }

    .eval-stars {
      display: flex;
      flex-direction: column;
    }

    .star-row {
      color: #f59e0b;
      font-size: 1.25rem;
      letter-spacing: 2px;
      line-height: 1;
      margin-bottom: 4px;
    }

    .eval-ratio {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
    }

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

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

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

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

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

    .custom-table tr:hover td {
      background-color: #fbfcfe;
    }

    .col-highlight {
      background-color: rgba(79, 70, 229, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* 案例中心双列图文展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

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

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

    .case-img-box {
      width: 100%;
      max-height: 280px;
      overflow: hidden;
      background-color: #e2e8f0;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .case-card:hover .case-img-box img {
      transform: scale(1.03);
    }

    .case-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent-cyan);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .case-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .case-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    /* 用户评论卡片 6 条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 0.95rem;
    }

    .review-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #e0e7ff, #ede9fe);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
    }

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠手风琴 */
    .faq-list {
      max-width: 860px;
      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;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--border-focus);
      box-shadow: var(--shadow-md);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 300;
      transition: var(--transition);
      color: var(--primary);
    }

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

    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed #f1f5f9;
      padding-top: 14px;
    }

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

    /* 需求表单与联系我们 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: flex-start;
    }

    .contact-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background-color: #f8fafc;
      transition: var(--transition);
      outline: none;
      font-family: inherit;
    }

    .form-control:focus {
      background-color: #ffffff;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }

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

    .contact-side-info {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .info-tile {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: flex-start;
      gap: 20px;
      box-shadow: var(--shadow-sm);
    }

    .info-tile-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background-color: #eef2ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      flex-shrink: 0;
    }

    .info-tile-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .info-tile-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      word-break: break-all;
    }

    .qr-box {
      text-align: center;
      padding: 20px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .qr-box img {
      max-width: 140px;
      margin: 0 auto 12px auto;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
    }

    .qr-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 资讯文章与外链列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-item-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .article-badge {
      font-size: 0.72rem;
      color: var(--accent-coral);
      font-weight: 700;
      margin-bottom: 6px;
    }

    .article-link-title {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 12px;
    }

    .article-link-more {
      font-size: 0.82rem;
      color: var(--primary);
      font-weight: 600;
    }

    /* 友情链接专用区块 */
    .friendly-links-wrap {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 24px 0;
    }

    .friendly-inner {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .friendly-label {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-light);
      white-space: nowrap;
    }

    .friendly-items {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .friendly-items a {
      font-size: 0.85rem;
      color: var(--text-muted);
      background: #f8fafc;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
    }

    .friendly-items a:hover {
      color: var(--primary);
      border-color: var(--border-focus);
    }

    /* 页脚标准规范 */
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .footer-brand-desc {
      font-size: 0.92rem;
      line-height: 1.7;
      color: #94a3b8;
      max-width: 320px;
    }

    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: #f8fafc;
      margin-bottom: 18px;
    }

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

    .footer-list a {
      font-size: 0.9rem;
      color: #94a3b8;
    }

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

    .footer-contact-item {
      font-size: 0.88rem;
      line-height: 1.6;
      margin-bottom: 8px;
      color: #cbd5e1;
    }

    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
      color: #64748b;
    }

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

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

    /* 浮动客服入口 & 回到顶部 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      font-size: 1.1rem;
      transition: var(--transition);
      position: relative;
    }

    .floating-btn:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      color: var(--accent-coral);
    }

    .floating-qr-pop {
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: none;
      width: 140px;
      text-align: center;
    }

    .floating-qr-pop img {
      width: 100%;
      border-radius: 4px;
    }

    .floating-btn-qr:hover .floating-qr-pop {
      display: block;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .services-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-tabs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .articles-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background-color: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

      .nav-links.active {
        display: flex;
      }

      .nav-actions .btn {
        padding: 8px 14px;
        font-size: 0.85rem;
      }

      .nav-toggle {
        display: block;
      }

      .hero-title {
        font-size: 2rem;
      }

      .hero-indicators {
        grid-template-columns: repeat(2, 1fr);
      }

      .about-grid,
      .contact-layout,
      .cases-grid {
        grid-template-columns: 1fr;
      }

      .services-grid,
      .reviews-grid,
      .solution-tabs-grid,
      .articles-grid {
        grid-template-columns: 1fr;
      }

      .flow-steps {
        grid-template-columns: 1fr;
      }

      .eval-highlight-box {
        flex-direction: column;
        align-items: flex-start;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }