/* CSS 初始化与极致鲜亮风定义 */
    :root {
      --primary: #0052d9;
      --primary-bright: #00c2ff;
      --secondary: #7c4dff;
      --text-dark: #1d2129;
      --text-muted: #86909c;
      --bg-light: #f4f7fc;
      --bg-white: #ffffff;
      --accent: #ff5722;
      --accent-light: #fff3e0;
      --gradient: linear-gradient(135deg, #0052d9 0%, #7c4dff 100%);
      --gradient-bright: linear-gradient(135deg, #00c2ff 0%, #0052d9 100%);
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 8px 24px rgba(0, 82, 217, 0.08);
      --shadow-lg: 0 16px 48px rgba(0, 82, 217, 0.15);
      --radius: 12px;
      --container-width: 1200px;
    }

    * {
      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;
      color: var(--text-dark);
      background-color: var(--bg-light);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.3s ease;
    }

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

    ul {
      list-style: none;
    }

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

    /* 容器基准 */
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 头部导航 */
    header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      box-shadow: var(--shadow-sm);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid rgba(0, 82, 217, 0.08);
    }

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

    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

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

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      background: var(--gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-link {
      font-weight: 500;
      color: var(--text-dark);
      padding: 8px 12px;
      border-radius: 6px;
      transition: all 0.3s;
      font-size: 14px;
    }

    .nav-link:hover {
      color: var(--primary);
      background: rgba(0, 82, 217, 0.04);
    }

    .nav-btn {
      background: var(--gradient);
      color: #fff;
      padding: 10px 20px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 14px;
      box-shadow: 0 4px 12px rgba(124, 77, 255, 0.2);
    }

    .nav-btn:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(124, 77, 255, 0.3);
    }

    /* 汉堡菜单按钮 (移动端) */
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 6px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-dark);
      transition: 0.3s;
    }

    /* 首屏 (Hero) 无图设计 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(0, 194, 255, 0.12) 0%, rgba(124, 77, 255, 0.08) 50%, rgba(244, 247, 25c, 0) 100%), var(--bg-white);
      padding: 120px 0 80px;
      text-align: center;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(0, 82, 217, 0.05);
    }

    .hero-section::before {
      content: '';
      position: absolute;
      width: 300px;
      height: 300px;
      background: var(--gradient);
      filter: blur(150px);
      opacity: 0.15;
      top: -100px;
      left: -100px;
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-block;
      background: rgba(0, 82, 217, 0.06);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 24px;
      letter-spacing: 1px;
    }

    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-dark);
      margin-bottom: 24px;
    }

    .hero-title span {
      background: var(--gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 40px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 60px;
    }

    .btn-main {
      background: var(--gradient);
      color: #fff;
      padding: 16px 36px;
      border-radius: 30px;
      font-size: 16px;
      font-weight: 600;
      box-shadow: 0 8px 24px rgba(0, 82, 217, 0.25);
      transition: all 0.3s;
    }

    .btn-main:hover {
      color: #fff;
      transform: translateY(-3px);
      box-shadow: 0 12px 32px rgba(0, 82, 217, 0.35);
    }

    .btn-sub {
      background: var(--bg-white);
      color: var(--primary);
      border: 2px solid var(--primary);
      padding: 14px 34px;
      border-radius: 30px;
      font-size: 16px;
      font-weight: 600;
      transition: all 0.3s;
    }

    .btn-sub:hover {
      background: rgba(0, 82, 217, 0.05);
      transform: translateY(-3px);
    }

    /* 数据指标卡片 (Hero区下方) */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .metric-card {
      background: var(--bg-white);
      padding: 24px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(0, 82, 217, 0.05);
      transition: transform 0.3s;
    }

    .metric-card:hover {
      transform: translateY(-5px);
    }

    .metric-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用Section结构 */
    section {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      font-size: 14px;
      font-weight: 700;
      color: var(--secondary);
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 12px;
      display: block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-dark);
      position: relative;
      display: inline-block;
      padding-bottom: 12px;
    }

    .section-title::after {
      content: '';
      position: absolute;
      width: 50px;
      height: 4px;
      background: var(--gradient);
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      border-radius: 2px;
    }

    /* 关于我们 & 平台介绍 */
    .about-section {
      background: var(--bg-white);
    }

    .about-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 24px;
      margin-bottom: 20px;
      color: var(--primary);
    }

    .about-text p {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.8;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .highlight-box {
      background: var(--bg-light);
      padding: 20px;
      border-radius: var(--radius);
      border-left: 4px solid var(--primary-bright);
    }

    .highlight-box h4 {
      margin-bottom: 8px;
      color: var(--text-dark);
    }

    .highlight-box p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }

    /* AIGC服务能力 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-white);
      padding: 30px 24px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
      border: 1px solid transparent;
      text-align: center;
    }

    .service-card:hover {
      transform: translateY(-8px);
      border-color: rgba(0, 82, 217, 0.15);
      box-shadow: var(--shadow-md);
    }

    .service-icon {
      width: 60px;
      height: 60px;
      background: rgba(0, 82, 217, 0.08);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      color: var(--primary);
      font-size: 24px;
    }

    .service-card h3 {
      margin-bottom: 12px;
      font-size: 18px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 一站式制作场景 */
    .production-section {
      background: var(--bg-white);
    }

    .prod-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .prod-card {
      background: var(--bg-light);
      border-radius: var(--radius);
      overflow: hidden;
      transition: all 0.3s;
    }

    .prod-card:hover {
      transform: scale(1.02);
      box-shadow: var(--shadow-sm);
    }

    .prod-body {
      padding: 24px;
    }

    .prod-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-dark);
    }

    .prod-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

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

    .prod-tag {
      background: rgba(124, 77, 255, 0.08);
      color: var(--secondary);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 600;
    }

    /* 行业解决方案 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .solution-item {
      background: var(--bg-white);
      padding: 32px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      display: flex;
      gap: 20px;
    }

    .sol-icon {
      font-size: 32px;
      color: var(--primary-bright);
    }

    .sol-content h4 {
      font-size: 20px;
      margin-bottom: 10px;
    }

    .sol-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 全国服务网络与标签云 */
    .network-section {
      background: var(--bg-white);
    }

    .network-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .cloud-tag {
      background: var(--bg-light);
      padding: 10px 20px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
      border: 1px solid rgba(0, 0, 0, 0.05);
      transition: all 0.3s;
    }

    .cloud-tag:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    /* 标准化流程 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .process-step {
      background: var(--bg-white);
      padding: 30px 20px;
      border-radius: var(--radius);
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-number {
      width: 40px;
      height: 40px;
      background: var(--gradient);
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
    }

    .process-step h4 {
      margin-bottom: 10px;
    }

    .process-step p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 客户案例中心 (包含真实图片) */
    .cases-section {
      background: var(--bg-white);
    }

    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--bg-light);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-img-container {
      position: relative;
      aspect-ratio: 16 / 9;
      background: #eaeaea;
      overflow: hidden;
    }

    .case-img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-info {
      padding: 24px;
    }

    .case-info h4 {
      font-size: 18px;
      margin-bottom: 8px;
    }

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

    /* 对比评测 (严格要求的数据呈现) */
    .evaluation-section {
      background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
    }

    .evaluation-wrapper {
      display: grid;
      grid-template-columns: 1fr 2fr;
      gap: 40px;
      align-items: center;
    }

    .score-card {
      background: var(--gradient);
      color: #fff;
      padding: 40px 30px;
      border-radius: var(--radius);
      text-align: center;
      box-shadow: var(--shadow-lg);
    }

    .score-title {
      font-size: 20px;
      opacity: 0.9;
      margin-bottom: 10px;
    }

    .score-num {
      font-size: 64px;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 8px;
    }

    .score-stars {
      color: #ffca28;
      font-size: 24px;
      margin-bottom: 20px;
    }

    .score-desc {
      font-size: 14px;
      opacity: 0.8;
    }

    .eval-table-container {
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--bg-white);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .eval-table th {
      background: rgba(0, 82, 217, 0.05);
      color: var(--text-dark);
      font-weight: 700;
    }

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

    .eval-table .highlight-row {
      background: rgba(0, 194, 255, 0.04);
      font-weight: 600;
    }

    /* Token比价与智能匹配 */
    .token-section {
      background: var(--bg-white);
    }

    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      border: 2px solid var(--bg-light);
      border-radius: var(--radius);
      padding: 30px 24px;
      background: var(--bg-white);
      transition: all 0.3s;
    }

    .token-card.best-value {
      border-color: var(--primary-bright);
      position: relative;
    }

    .token-card.best-value::after {
      content: '全网最低价';
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--accent);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 10px;
      border-radius: 10px;
    }

    .token-model {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .token-price {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .token-price span {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 400;
    }

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

    .token-features li::before {
      content: '✓';
      color: var(--primary-bright);
      font-weight: bold;
    }

    /* 培训板块 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .training-card {
      background: var(--bg-white);
      border-radius: var(--radius);
      padding: 40px 30px;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(0, 82, 217, 0.05);
    }

    .training-card h3 {
      font-size: 22px;
      margin-bottom: 16px;
      color: var(--primary);
    }

    .training-list li {
      margin-bottom: 12px;
      font-size: 14px;
      display: flex;
      justify-content: space-between;
      border-bottom: 1px dashed rgba(0, 0, 0, 0.05);
      padding-bottom: 8px;
    }

    /* AI术语百科 & 帮助中心 */
    .glossary-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 40px;
    }

    .glossary-card {
      background: var(--bg-white);
      padding: 20px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }

    .glossary-card h4 {
      color: var(--primary);
      margin-bottom: 8px;
      font-size: 16px;
    }

    .glossary-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-white);
      border-radius: 8px;
      margin-bottom: 12px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.3s;
    }

    .faq-question:hover {
      background: rgba(0, 82, 217, 0.02);
    }

    .faq-question::after {
      content: '+';
      font-size: 20px;
      color: var(--primary);
      transition: transform 0.3s;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafbfe;
    }

    .faq-answer-content {
      padding: 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 客户评论卡片 */
    .comments-section {
      background: var(--bg-white);
    }

    .comments-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .comment-card {
      background: var(--bg-light);
      padding: 24px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .comment-text {
      font-size: 14px;
      color: var(--text-dark);
      margin-bottom: 20px;
      font-style: italic;
    }

    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-info h5 {
      font-size: 14px;
      margin-bottom: 2px;
    }

    .user-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 行业资讯 & 知识库 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: var(--bg-white);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s;
    }

    .article-card:hover {
      transform: translateY(-4px);
    }

    .article-body {
      padding: 24px;
    }

    .article-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .article-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 加盟代理模块 */
    .agent-section {
      background: var(--gradient);
      color: #fff;
      text-align: center;
    }

    .agent-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }

    .agent-wrapper h3 {
      font-size: 32px;
      margin-bottom: 16px;
    }

    .agent-wrapper p {
      font-size: 16px;
      opacity: 0.9;
      margin-bottom: 30px;
    }

    /* 联系我们 & 需求匹配表单 */
    .contact-section {
      background: var(--bg-white);
    }

    .contact-wrapper {
      display: grid;
      grid-template-columns: 3fr 2fr;
      gap: 50px;
    }

    .form-container {
      background: var(--bg-light);
      padding: 40px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }

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

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid rgba(0, 0, 0, 0.1);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.3s;
    }

    .form-control:focus {
      border-color: var(--primary);
    }

    .btn-submit {
      width: 100%;
      background: var(--gradient);
      color: #fff;
      border: none;
      padding: 14px;
      font-size: 16px;
      font-weight: 600;
      border-radius: 6px;
      cursor: pointer;
      transition: opacity 0.3s;
    }

    .btn-submit:hover {
      opacity: 0.9;
    }

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

    .info-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 24px;
    }

    .info-icon {
      font-size: 20px;
      color: var(--primary);
    }

    .qr-box {
      margin-top: 20px;
      padding: 20px;
      background: var(--bg-light);
      border-radius: var(--radius);
      text-align: center;
      border: 1px solid rgba(0, 82, 217, 0.1);
    }

    .qr-box img {
      width: 150px;
      height: 150px;
      margin: 0 auto 12px;
      border-radius: 4px;
    }

    /* 页脚与友情链接 */
    footer {
      background: #111927;
      color: #a3b1cc;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: 2px solid var(--primary-bright);
    }

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

    .footer-col h4 {
      color: #fff;
      margin-bottom: 20px;
      font-size: 16px;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: #a3b1cc;
    }

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

    .friend-links-area {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 24px 0;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 14px;
      color: #fff;
      margin-bottom: 12px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-list a {
      color: #8f9cae;
      font-size: 13px;
    }

    .friend-links-list a:hover {
      color: var(--primary-bright);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 浮动菜单 */
    .floating-widgets {
      position: fixed;
      right: 24px;
      bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: var(--bg-white);
      border-radius: 50%;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s;
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    .float-btn .tooltip {
      position: absolute;
      right: 60px;
      background: #333;
      color: #fff;
      padding: 6px 12px;
      border-radius: 4px;
      font-size: 12px;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s;
    }

    .float-btn:hover .tooltip {
      opacity: 1;
    }

    /* 移动端响应式样式 */
    @media (max-width: 992px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid rgba(0, 0, 0, 0.05);
      }

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

      .menu-toggle {
        display: flex;
      }

      .hero-title {
        font-size: 32px;
      }

      .metrics-grid, .services-grid, .prod-grid, .cases-grid, .comments-grid, .articles-grid, .glossary-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .about-content, .solutions-grid, .network-container, .evaluation-wrapper, .training-grid, .contact-wrapper, .footer-grid {
        grid-template-columns: 1fr;
      }

      .process-timeline {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 576px) {
      .metrics-grid, .services-grid, .prod-grid, .cases-grid, .comments-grid, .articles-grid, .glossary-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-actions {
        flex-direction: column;
        align-items: center;
      }
      .btn-main, .btn-sub {
        width: 100%;
        text-align: center;
      }
    }