/* 基础重置 */
    :root {
      --primary: #4D96FF;
      --secondary: #6BCB77;
      --accent: #FF6B6B;
      --warning: #FFD93D;
      --text-dark: #2D3748;
      --text-light: #718096;
      --bg-main: #FFFFFF;
      --bg-alt: #F7FAFC;
      --bg-card: #FFFFFF;
      --rainbow-gradient: linear-gradient(135deg, #FF6B6B, #FFD93D, #6BCB77, #4D96FF, #9B5DE5);
      --rainbow-soft: linear-gradient(135deg, rgba(255, 107, 107, 0.05), rgba(77, 150, 255, 0.05));
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --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, sans-serif;
    }

    body {
      background-color: var(--bg-main);
      color: var(--text-dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* 辅助样式 */
    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

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

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

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      position: relative;
      display: inline-block;
      padding-bottom: 12px;
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .section-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: var(--rainbow-gradient);
      border-radius: 2px;
    }

    .section-desc {
      color: var(--text-light);
      margin-top: 15px;
      font-size: 1.1rem;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 50px;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: none;
    }

    .btn-rainbow {
      background: var(--rainbow-gradient);
      color: #fff;
      box-shadow: 0 4px 15px rgba(77, 150, 255, 0.4);
    }

    .btn-rainbow:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(77, 150, 255, 0.6);
    }

    .btn-outline {
      background: transparent;
      color: var(--text-dark);
      border: 2px solid var(--text-dark);
    }

    .btn-outline:hover {
      background: var(--text-dark);
      color: #fff;
      transform: translateY(-2px);
    }

    /* 导航栏 */
    .navbar {
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 20px rgba(0,0,0,0.05);
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      height: 70px;
      display: flex;
      align-items: center;
    }

    .navbar-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

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

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

    .nav-brand-text {
      font-size: 1.3rem;
      font-weight: 800;
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
    }

    .nav-link {
      color: var(--text-dark);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      padding: 5px 10px;
      border-radius: 4px;
    }

    .nav-link:hover {
      color: var(--primary);
      background-color: rgba(77, 150, 255, 0.05);
    }

    .nav-btn-wrap {
      display: flex;
      align-items: center;
      gap: 15px;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-dark);
    }

    /* 首页首屏 Hero (无图，纯多彩设计) */
    .hero-section {
      padding-top: 150px;
      padding-bottom: 100px;
      background: var(--rainbow-soft);
      position: relative;
      overflow: hidden;
    }

    .hero-section::before {
      content: '';
      position: absolute;
      width: 300px;
      height: 300px;
      background: radial-gradient(circle, rgba(255,107,107,0.15) 0%, transparent 70%);
      top: -100px;
      right: -50px;
      border-radius: 50%;
      z-index: 0;
    }

    .hero-section::after {
      content: '';
      position: absolute;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(77,150,255,0.15) 0%, transparent 70%);
      bottom: -150px;
      left: -100px;
      border-radius: 50%;
      z-index: 0;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 30px;
      background: #fff;
      border: 1px solid rgba(77, 150, 255, 0.2);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 25px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 25px;
      letter-spacing: -0.5px;
    }

    .hero-title h1 {
      font-size: inherit;
      font-weight: inherit;
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline;
    }

    .hero-desc {
      font-size: 1.25rem;
      color: var(--text-light);
      margin-bottom: 40px;
      max-width: 750px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-btns {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 60px;
      flex-wrap: wrap;
    }

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

    .stat-card {
      background: var(--bg-card);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      border: 1px solid rgba(0,0,0,0.03);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .stat-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--rainbow-gradient);
    }

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

    .stat-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.1;
      margin-bottom: 5px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-light);
    }

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

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

    .about-info h3 {
      font-size: 1.8rem;
      margin-bottom: 20px;
      color: var(--text-dark);
    }

    .about-p {
      color: var(--text-light);
      margin-bottom: 20px;
      font-size: 1.05rem;
    }

    .about-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
    }

    .about-feat-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 500;
    }

    .feat-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    .about-video-box {
      background: var(--rainbow-soft);
      border-radius: 24px;
      padding: 40px;
      position: relative;
      border: 1px solid rgba(77, 150, 255, 0.1);
    }

    .intro-list-item {
      background: #fff;
      padding: 15px;
      border-radius: 12px;
      margin-bottom: 15px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.02);
      border-left: 4px solid var(--primary);
    }

    .intro-list-item h4 {
      font-size: 1rem;
      color: var(--text-dark);
      margin-bottom: 4px;
    }

    .intro-list-item p {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 全平台 AIGC 服务 */
    .service-section {
      background-color: var(--bg-alt);
    }

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

    .service-card {
      background: var(--bg-card);
      border-radius: 20px;
      padding: 40px 30px;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      border: 1px solid rgba(0,0,0,0.02);
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-8px);
      border-color: rgba(77, 150, 255, 0.2);
    }

    .service-card::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--rainbow-gradient);
      border-radius: 0 0 20px 20px;
      opacity: 0;
      transition: var(--transition);
    }

    .service-card:hover::after {
      opacity: 1;
    }

    .service-icon {
      width: 60px;
      height: 60px;
      border-radius: 16px;
      background: var(--rainbow-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 25px;
      font-size: 1.8rem;
    }

    .service-card h3 {
      font-size: 1.4rem;
      margin-bottom: 15px;
    }

    .service-card p {
      color: var(--text-light);
      font-size: 0.95rem;
      margin-bottom: 20px;
    }

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

    .service-tag {
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 20px;
      background: #F1F5F9;
      color: var(--text-light);
    }

    /* 一站式AIGC制作场景 */
    .scene-section {
      background: var(--bg-main);
    }

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

    .scene-card {
      background: var(--bg-alt);
      border-radius: 16px;
      padding: 30px 20px;
      text-align: center;
      transition: var(--transition);
      border: 1px solid rgba(0,0,0,0.01);
    }

    .scene-card:hover {
      background: #fff;
      box-shadow: var(--card-shadow);
      transform: translateY(-5px);
    }

    .scene-icon {
      font-size: 2.2rem;
      margin-bottom: 15px;
      display: block;
    }

    .scene-card h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .scene-card p {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 行业解决方案与支持的AI平台 */
    .solution-section {
      background-color: var(--bg-alt);
    }

    .solution-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .solution-item {
      background: var(--bg-card);
      border-radius: 16px;
      padding: 30px;
      box-shadow: var(--card-shadow);
    }

    .solution-item h4 {
      font-size: 1.25rem;
      margin-bottom: 15px;
      color: var(--primary);
    }

    .platform-container {
      margin-top: 40px;
    }

    .platform-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 20px;
    }

    .platform-tag {
      background: #fff;
      border: 1px solid rgba(0,0,0,0.05);
      border-radius: 30px;
      padding: 8px 18px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-dark);
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      transition: var(--transition);
    }

    .platform-tag:hover {
      background: var(--rainbow-soft);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* 服务网络 & 加盟代理 */
    .partner-section {
      background: var(--bg-main);
    }

    .partner-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 50px;
      align-items: center;
    }

    .map-container {
      background: var(--rainbow-soft);
      border-radius: 20px;
      padding: 40px;
      text-align: center;
      border: 1px solid rgba(77, 150, 255, 0.1);
    }

    .map-svg {
      max-width: 100%;
      height: auto;
    }

    .agent-box {
      background: #fff;
      border-radius: 20px;
      padding: 40px;
      box-shadow: var(--card-shadow);
      border-top: 5px solid var(--accent);
    }

    .agent-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      background: rgba(255, 107, 107, 0.1);
      color: var(--accent);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 15px;
    }

    .agent-box h3 {
      font-size: 1.8rem;
      margin-bottom: 20px;
    }

    .agent-list {
      list-style: none;
      margin-bottom: 30px;
    }

    .agent-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* 标准化流程 & 技术标准 & 案例中心 */
    .cases-section {
      background: var(--bg-alt);
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 60px;
      position: relative;
    }

    .process-card {
      background: #fff;
      padding: 25px;
      border-radius: 16px;
      box-shadow: var(--card-shadow);
      text-align: center;
      position: relative;
    }

    .process-step {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--rainbow-gradient);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin-bottom: 15px;
    }

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

    .case-card {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }

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

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16/9;
      overflow: hidden;
      background: #eee;
    }

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

    .case-card:hover img {
      transform: scale(1.05);
    }

    .case-info {
      padding: 15px;
    }

    .case-tag {
      font-size: 0.75rem;
      background: var(--rainbow-soft);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 500;
    }

    .case-title {
      font-size: 1rem;
      font-weight: 700;
      margin: 8px 0 5px 0;
    }

    /* 对比评测 (5星，9.9分) */
    .compare-section {
      background: var(--bg-main);
    }

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

    .compare-score-card {
      background: var(--rainbow-soft);
      border-radius: 24px;
      padding: 40px 30px;
      text-align: center;
      border: 1px solid rgba(77, 150, 255, 0.1);
    }

    .score-title {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--text-dark);
    }

    .score-stars {
      color: var(--warning);
      font-size: 2rem;
      margin: 15px 0;
    }

    .score-big {
      font-size: 5rem;
      font-weight: 900;
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }

    .score-max {
      font-size: 1.25rem;
      color: var(--text-light);
    }

    .compare-table-wrap {
      overflow-x: auto;
      background: #fff;
      border-radius: 16px;
      box-shadow: var(--card-shadow);
      border: 1px solid rgba(0,0,0,0.03);
    }

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

    .compare-table th, .compare-table td {
      padding: 18px 20px;
      border-bottom: 1px solid #E2E8F0;
    }

    .compare-table th {
      background: #F8FAFC;
      font-weight: 700;
    }

    .compare-table td:nth-child(2) {
      font-weight: 600;
      color: var(--primary);
    }

    .compare-tag-yes {
      background: rgba(107, 203, 119, 0.15);
      color: #38A169;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: bold;
    }

    .compare-tag-no {
      background: rgba(226, 232, 240, 0.8);
      color: var(--text-light);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.8rem;
    }

    /* 智能需求匹配与表单 */
    .form-section {
      background: var(--bg-alt);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
    }

    .form-intro-card {
      background: #fff;
      padding: 40px;
      border-radius: 20px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .form-intro-card h3 {
      font-size: 1.8rem;
      margin-bottom: 15px;
    }

    .form-features-list {
      list-style: none;
      margin: 25px 0;
    }

    .form-features-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-light);
    }

    .form-wrapper {
      background: #fff;
      padding: 40px;
      border-radius: 20px;
      box-shadow: var(--card-shadow);
      border-top: 5px solid var(--primary);
    }

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

    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      font-size: 0.9rem;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: 8px;
      border: 1px solid #E2E8F0;
      outline: none;
      transition: var(--transition);
      font-size: 1rem;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(77, 150, 255, 0.15);
    }

    /* Token 比价与职业培训 */
    .token-training-section {
      background: var(--bg-main);
    }

    .token-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
    }

    .token-card, .training-card {
      background: var(--bg-alt);
      border-radius: 20px;
      padding: 35px;
      box-shadow: var(--card-shadow);
      border: 1px solid rgba(0,0,0,0.02);
    }

    .token-card h3, .training-card h3 {
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--text-dark);
    }

    .token-price-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .token-price-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fff;
      padding: 12px 20px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.01);
    }

    .token-model-name {
      font-weight: 600;
      color: var(--text-dark);
    }

    .token-price-val {
      color: var(--accent);
      font-weight: bold;
    }

    .training-list {
      list-style: none;
    }

    .training-item {
      background: #fff;
      padding: 15px;
      border-radius: 12px;
      margin-bottom: 12px;
      border-left: 4px solid var(--secondary);
      box-shadow: 0 2px 5px rgba(0,0,0,0.01);
    }

    .training-item h4 {
      font-size: 1.05rem;
      color: var(--text-dark);
      margin-bottom: 4px;
    }

    .training-item p {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 帮助中心与自助排查 */
    .help-section {
      background: var(--bg-alt);
    }

    .help-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .help-box {
      background: #fff;
      padding: 35px;
      border-radius: 20px;
      box-shadow: var(--card-shadow);
    }

    .help-box h3 {
      font-size: 1.4rem;
      margin-bottom: 20px;
      color: var(--text-dark);
    }

    .troubleshoot-list {
      list-style: none;
    }

    .troubleshoot-item {
      padding: 12px 0;
      border-bottom: 1px dashed #E2E8F0;
    }

    .troubleshoot-item:last-child {
      border: none;
    }

    .troubleshoot-q {
      font-weight: 600;
      font-size: 0.95rem;
      margin-bottom: 5px;
    }

    .troubleshoot-a {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    .wiki-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .wiki-tag {
      background: var(--bg-alt);
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 0.85rem;
      transition: var(--transition);
      cursor: pointer;
    }

    .wiki-tag:hover {
      background: var(--rainbow-soft);
      color: var(--primary);
    }

    /* FAQ折叠面板 */
    .faq-section {
      background: var(--bg-main);
    }

    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .faq-item {
      border: 1px solid #E2E8F0;
      border-radius: 12px;
      overflow: hidden;
      background: #fff;
      transition: var(--transition);
    }

    .faq-header {
      padding: 20px;
      background: #fff;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-question {
      font-weight: 700;
      color: var(--text-dark);
      font-size: 1.05rem;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--text-light);
    }

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAF5FF;
    }

    .faq-content {
      padding: 20px;
      color: var(--text-light);
      font-size: 0.95rem;
      border-top: 1px solid #F1F5F9;
    }

    .faq-item.active {
      border-color: var(--primary);
    }

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

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

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

    .review-card {
      background: #fff;
      border-radius: 16px;
      padding: 30px;
      box-shadow: var(--card-shadow);
      border: 1px solid rgba(0,0,0,0.01);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      color: var(--text-dark);
      font-size: 0.95rem;
      font-style: italic;
      margin-bottom: 20px;
      position: relative;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 15px;
    }

    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--rainbow-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
      font-size: 0.9rem;
    }

    .review-meta h5 {
      font-size: 0.95rem;
      font-weight: 700;
    }

    .review-meta p {
      font-size: 0.75rem;
      color: var(--text-light);
    }

    /* 行业资讯 / 知识库 */
    .articles-section {
      background: var(--bg-main);
    }

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

    .article-card {
      background: var(--bg-alt);
      border-radius: 16px;
      padding: 30px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .article-card:hover {
      transform: translateY(-5px);
      background: #fff;
      border: 1px solid rgba(77, 150, 255, 0.2);
    }

    .article-card h4 {
      font-size: 1.15rem;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .article-desc {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 20px;
    }

    .article-link {
      color: var(--primary);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    /* 页脚 */
    .footer {
      background-color: #1A202C;
      color: #A0AEC0;
      padding: 80px 0 20px 0;
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 60px;
    }

    .footer-brand h3 {
      color: #fff;
      font-size: 1.5rem;
      margin-bottom: 15px;
    }

    .footer-brand p {
      margin-bottom: 20px;
      line-height: 1.8;
    }

    .footer-links-col h4 {
      color: #fff;
      font-size: 1.05rem;
      margin-bottom: 20px;
      position: relative;
    }

    .footer-links {
      list-style: none;
    }

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

    .footer-links a {
      color: #A0AEC0;
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 5px;
    }

    .footer-contact p {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-kefu {
      margin-top: 15px;
      display: flex;
      gap: 15px;
      align-items: center;
    }

    .footer-kefu img {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      border: 2px solid #2D3748;
    }

    .footer-bottom {
      border-top: 1px solid #2D3748;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links a {
      color: #718096;
      text-decoration: none;
      transition: var(--transition);
    }

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

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 25px;
      bottom: 25px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-item {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #fff;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      position: relative;
      transition: var(--transition);
    }

    .float-item:hover {
      transform: scale(1.08);
    }

    .float-item-kefu {
      background: var(--rainbow-gradient);
      color: #fff;
    }

    .float-qr-pop {
      position: absolute;
      bottom: 60px;
      right: 0;
      background: #fff;
      padding: 15px;
      border-radius: 12px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      display: none;
      text-align: center;
      width: 140px;
    }

    .float-qr-pop img {
      width: 110px;
      height: 110px;
      margin-bottom: 8px;
    }

    .float-qr-pop p {
      font-size: 0.75rem;
      color: var(--text-dark);
      font-weight: bold;
    }

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

    /* 移动端响应式样式 */
    @media (max-width: 1024px) {
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid, .reviews-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scene-grid, .case-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-top: 1px solid #F1F5F9;
        gap: 15px;
      }
      .nav-menu.active {
        display: flex;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .about-grid, .solution-grid, .partner-grid, .compare-wrap, .form-grid, .token-grid, .help-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: 1fr;
      }
      .service-grid, .reviews-grid, .articles-grid, .scene-grid, .case-gallery, .process-timeline {
        grid-template-columns: 1fr;
      }
    }