:root {
      --primary: #0052ff;
      --primary-hover: #0041cc;
      --secondary: #00b4d8;
      --accent: #ff6b00;
      --accent-light: #fff5eb;
      --bg-main: #f8fafc;
      --bg-surface: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #94a3b8;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(0, 82, 255, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      background-color: var(--bg-main);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background: linear-gradient(180deg, #f8fafc 0%, #edf2f7 100%);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .section-padding {
      padding: 80px 0;
    }

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

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(0, 82, 255, 0.08);
      color: var(--primary);
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      gap: 8px;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, #0052ff 0%, #0099ff 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #0041cc 0%, #0080e6 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 82, 255, 0.45);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background: rgba(0, 82, 255, 0.04);
      transform: translateY(-2px);
    }

    .btn-accent {
      background: linear-gradient(135deg, #ff6b00 0%, #ff8833 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 107, 0, 0.3);
    }

    .btn-accent:hover {
      background: linear-gradient(135deg, #e65c00 0%, #ff771a 100%);
      transform: translateY(-2px);
    }

    /* 顶部导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-wrap .logo-img-box {
      width: 140px;
      height: 40px;
      display: flex;
      align-items: center;
    }

    .brand-name-hidden {
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--primary);
      display: none;
    }

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

    .nav-links li a {
      font-size: 0.92rem;
      color: var(--text-muted);
      font-weight: 500;
      padding: 8px 10px;
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(0, 82, 255, 0.05);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
      padding: 4px;
    }

    /* 首屏 Hero (无图，纯CSS几何与排版) */
    .hero-section {
      padding: 70px 0 60px 0;
      background: radial-gradient(circle at 50% 10%, rgba(0, 180, 216, 0.12) 0%, rgba(0, 82, 255, 0.04) 40%, rgba(248, 250, 252, 0) 75%);
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-wrap {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(0, 82, 255, 0.2);
      border-radius: var(--radius-full);
      box-shadow: 0 4px 12px rgba(0, 82, 255, 0.08);
      margin-bottom: 24px;
      font-size: 0.9rem;
      color: var(--primary);
      font-weight: 600;
    }

    .hero-badge span.pulse-dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 780px;
      margin: 0 auto 34px auto;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .hero-stat-card {
      background: #ffffff;
      padding: 20px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-align: center;
    }

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

    .stat-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 支持平台模型滚动/标签矩阵 */
    .models-bar-section {
      background: #ffffff;
      padding: 24px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .models-bar-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 14px;
    }

    .models-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-light);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-tag {
      font-size: 0.8rem;
      padding: 5px 12px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      color: var(--text-muted);
      font-weight: 600;
      border: 1px solid transparent;
      transition: var(--transition);
    }

    .model-tag:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
    }

    /* 平台核心能力介绍 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 82, 255, 0.3);
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 82, 255, 0.1), rgba(0, 180, 216, 0.15));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      font-weight: bold;
    }

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

    .feature-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .feature-list {
      list-style: none;
      padding-top: 14px;
      border-top: 1px dashed var(--border-color);
    }

    .feature-list li {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .feature-list li::before {
      content: "•";
      color: var(--primary);
      font-weight: bold;
      font-size: 1.2rem;
    }

    /* 场景矩阵卡片（一站式制作） */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 22px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

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

    .scenario-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--primary);
      opacity: 0;
      transition: var(--transition);
    }

    .scenario-card:hover::before {
      opacity: 1;
    }

    .scenario-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .scenario-tag-sub {
      font-size: 0.72rem;
      padding: 2px 6px;
      background: var(--bg-alt);
      color: var(--primary);
      border-radius: 4px;
      font-weight: normal;
    }

    .scenario-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 案例中心 (图文区) */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      background: var(--bg-alt);
      overflow: hidden;
      position: relative;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 20px;
    }

    .case-category {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
    }

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

    .case-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 评测与对比板块 */
    .review-score-banner {
      background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%);
      border: 2px solid rgba(0, 82, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      box-shadow: var(--shadow-md);
    }

    .score-summary-left {
      flex: 1;
    }

    .score-stars {
      color: #ff9900;
      font-size: 1.4rem;
      margin-bottom: 8px;
      letter-spacing: 2px;
    }

    .score-title {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .score-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .score-box-right {
      text-align: center;
      background: #ffffff;
      padding: 20px 30px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .score-big {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-max {
      font-size: 1rem;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: var(--bg-alt);
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.95rem;
    }

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

    .compare-table .highlight-col {
      background: rgba(0, 82, 255, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    .badge-win {
      display: inline-block;
      padding: 3px 8px;
      background: rgba(16, 185, 129, 0.12);
      color: #059669;
      font-size: 0.75rem;
      border-radius: 4px;
      font-weight: bold;
    }

    /* 标准流程时间线 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(0, 82, 255, 0.15);
      line-height: 1;
      margin-bottom: 12px;
    }

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

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .testimonial-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;
    }

    .testi-content {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: normal;
    }

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

    .testi-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--bg-alt);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1rem;
      border: 1px solid rgba(0, 82, 255, 0.2);
    }

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

    .testi-role {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* 需求匹配与表单 */
    .contact-section-wrap {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }

    .contact-info-side {
      background: linear-gradient(135deg, #0052ff 0%, #0033aa 100%);
      color: #ffffff;
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-title {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .contact-info-desc {
      font-size: 0.95rem;
      color: rgba(255, 255, 255, 0.85);
      margin-bottom: 30px;
      line-height: 1.6;
    }

    .contact-direct-items {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 30px;
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: rgba(255, 255, 255, 0.9);
    }

    .qr-side-box {
      background: rgba(255, 255, 255, 0.1);
      padding: 16px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .qr-img-wrapper {
      width: 84px;
      height: 84px;
      background: #ffffff;
      padding: 4px;
      border-radius: 8px;
    }

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

    .form-side {
      padding: 44px;
      background: #ffffff;
    }

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

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      background: #fafafa;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 880px;
      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(--primary);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.02rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 20px;
      transition: max-height 0.3s ease-in-out;
    }

    /* 行业资讯 & 友情链接 */
    .articles-block-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .article-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .article-chip {
      padding: 8px 16px;
      background: var(--bg-alt);
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      color: var(--text-muted);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .article-chip:hover {
      color: var(--primary);
      border-color: var(--primary);
      background: #ffffff;
    }

    .friendly-links-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding-top: 16px;
    }

    .friendly-links-container a {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .friendly-links-container a:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

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

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

    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .footer-text {
      font-size: 0.88rem;
      color: #94a3b8;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-heading {
      font-size: 0.95rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-menu {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-menu li a {
      font-size: 0.85rem;
      color: #94a3b8;
    }

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

    .footer-bottom-bar {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 浮动工具栏 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn-circle {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(0, 82, 255, 0.35);
      cursor: pointer;
      position: relative;
      transition: var(--transition);
      font-size: 1.2rem;
    }

    .kefu-btn-circle:hover {
      transform: scale(1.08);
      background: var(--primary-hover);
    }

    .kefu-popover {
      position: absolute;
      right: 64px;
      bottom: 0;
      background: #ffffff;
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      width: 170px;
      display: none;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .kefu-btn-circle:hover .kefu-popover {
      display: flex;
    }

    .kefu-popover img {
      width: 130px;
      height: 130px;
      border-radius: 6px;
      margin-bottom: 8px;
    }

    .kefu-pop-text {
      font-size: 0.78rem;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.2rem; }
      .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-top-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title { font-size: 1.8rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid { grid-template-columns: 1fr; }
      .scenarios-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .testimonials-grid { grid-template-columns: 1fr; }
      .contact-grid { grid-template-columns: 1fr; }
      .review-score-banner { flex-direction: column; text-align: center; }
      .footer-top-grid { grid-template-columns: 1fr; }
    }