/* 全局变量与高饱和艳彩风配色定义 */
    :root {
      --primary-color: #4F46E5;
      --primary-hover: #4338CA;
      --accent-pink: #EC4899;
      --accent-cyan: #06B6D4;
      --accent-amber: #F59E0B;
      --accent-lime: #10B981;
      --text-main: #1E293B;
      --text-muted: #475569;
      --text-light: #64748B;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --border-color: #E2E8F0;
      --border-bright: #CBD5E1;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 12px -1px rgba(79, 70, 229, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 12px 24px -4px rgba(79, 70, 229, 0.12), 0 6px 12px -2px rgba(0, 0, 0, 0.05);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --container-max: 1200px;
    }

    /* 基础重置 */
    *, *::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-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    /* 顶部导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    }

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

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-box img {
      max-height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .brand-badge {
      background: linear-gradient(135deg, #EC4899, #8B5CF6);
      color: #FFF;
      font-size: 0.65rem;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
    }

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

    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-weight: 600;
      font-size: 0.92rem;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: #EEF2FF;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.92rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      text-decoration: none;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .btn-primary {
      background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
      color: #FFFFFF !important;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
    }

    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary-color);
      border-color: #C7D2FE;
    }

    .btn-secondary:hover {
      background: #EEF2FF;
      border-color: var(--primary-color);
    }

    .btn-accent {
      background: linear-gradient(135deg, #EC4899, #F43F5E);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.35);
    }

    .btn-accent:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.45);
    }

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

    /* 首屏 Hero 区域 - 纯CSS设计，无图片 */
    .hero-section {
      position: relative;
      padding: 70px 0 60px;
      background: radial-gradient(circle at 85% 15%, rgba(236, 72, 153, 0.12) 0%, transparent 45%),
                  radial-gradient(circle at 10% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 45%),
                  linear-gradient(180deg, #F0F4FF 0%, #FFFFFF 100%);
      border-bottom: 1px solid var(--border-color);
      text-align: center;
      overflow: hidden;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #FFFFFF;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-full);
      color: #4F46E5;
      font-weight: 700;
      font-size: 0.85rem;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-tag .dot {
      width: 8px;
      height: 8px;
      background: #10B981;
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
    }

    .hero-title {
      font-size: clamp(2rem, 4.5vw, 3.2rem);
      font-weight: 900;
      letter-spacing: -0.8px;
      line-height: 1.25;
      color: #0F172A;
      margin-bottom: 20px;
    }

    .hero-title-gradient {
      background: linear-gradient(135deg, #4F46E5 0%, #EC4899 50%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .hero-actions .btn {
      padding: 14px 32px;
      font-size: 1.05rem;
    }

    /* 纯CSS首屏亮点数据面板 */
    .hero-stats-panel {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #FFFFFF;
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-md);
      max-width: 1040px;
      margin: 0 auto;
    }

    .stat-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      border-right: 1px dashed var(--border-color);
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-value {
      font-size: 1.9rem;
      font-weight: 900;
      color: #1E293B;
      line-height: 1.2;
    }

    .stat-value span {
      font-size: 1.1rem;
      color: var(--accent-pink);
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-top: 4px;
      font-weight: 600;
    }

    /* 通用章节容器 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

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

    .section-subtitle {
      text-transform: uppercase;
      font-size: 0.82rem;
      font-weight: 800;
      letter-spacing: 1.5px;
      color: var(--primary-color);
      display: block;
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #0F172A;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-lead {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 平台介绍模块 */
    .about-platform-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-content h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: #0F172A;
    }

    .about-content p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1rem;
      line-height: 1.7;
    }

    .platform-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }

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

    .platform-feature-list li::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #D1FAE5;
      color: #059669;
      font-weight: 800;
      font-size: 0.8rem;
    }

    .platform-visual-card {
      background: linear-gradient(135deg, #EEF2FF 0%, #FDF2F8 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .models-marquee-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 16px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

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

    .tag-badge {
      background: #FFFFFF;
      border: 1px solid var(--border-bright);
      color: #1E293B;
      padding: 5px 12px;
      border-radius: var(--radius-full);
      font-size: 0.82rem;
      font-weight: 600;
      transition: all 0.2s;
    }

    .tag-badge:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateY(-2px);
    }

    .tag-badge.hot {
      background: #FEF2F2;
      border-color: #FECACA;
      color: #EF4444;
    }

    /* AIGC一站式制作与服务卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #C7D2FE;
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 16px;
      background: #EEF2FF;
      color: var(--primary-color);
    }

    .service-card:nth-child(2n) .service-icon { background: #FCE7F3; color: #DB2777; }
    .service-card:nth-child(3n) .service-icon { background: #CFFAFE; color: #0891B2; }
    .service-card:nth-child(4n) .service-icon { background: #FEF3C7; color: #D97706; }

    .service-card h4 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: #0F172A;
    }

    .service-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-badge {
      align-self: flex-start;
      margin-top: 14px;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      background: #F1F5F9;
      color: #475569;
    }

    /* 行业解决方案与素材图文展示 */
    .solution-case-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
      margin-bottom: 40px;
    }

    .solution-case-wrap.reversed {
      direction: rtl;
    }

    .solution-case-wrap.reversed > * {
      direction: ltr;
    }

    .solution-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      aspect-ratio: 16 / 9;
      background: #E2E8F0;
      position: relative;
    }

    .solution-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

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

    .solution-detail-box h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: #0F172A;
      margin-bottom: 14px;
    }

    .solution-detail-box p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    /* 对比评测：高饱和亮眼对比区 */
    .review-highlight-banner {
      background: linear-gradient(135deg, #4F46E5 0%, #EC4899 100%);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 36px;
      box-shadow: 0 10px 30px rgba(79, 70, 229, 0.25);
    }

    .review-score-area {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-big {
      font-size: 3.8rem;
      font-weight: 900;
      line-height: 1;
      color: #FFDE00;
      text-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }

    .score-meta h4 {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 4px;
    }

    .stars-box {
      color: #FFDE00;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

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

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

    .comparison-table th, 
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }

    .comparison-table th {
      background: #F8FAFC;
      font-weight: 800;
      color: #1E293B;
    }

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

    .comparison-table tr:hover td {
      background: #F8FAFC;
    }

    .col-highlight {
      background: #F0FDF4;
      font-weight: 700;
      color: #15803D;
    }

    .comparison-table tr:hover .col-highlight {
      background: #DCFCE7;
    }

    /* Token 比价专区 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .pricing-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      position: relative;
      transition: all 0.3s ease;
    }

    .pricing-card.featured {
      border-color: var(--accent-pink);
      box-shadow: 0 10px 30px rgba(236, 72, 153, 0.15);
      transform: scale(1.02);
    }

    .pricing-tag-float {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(90deg, #EC4899, #F43F5E);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 3px 12px;
      border-radius: 20px;
    }

    .pricing-title {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .pricing-price {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary-color);
      margin: 16px 0;
    }

    .pricing-price span {
      font-size: 0.85rem;
      color: var(--text-light);
      font-weight: 500;
    }

    .pricing-features {
      list-style: none;
      margin: 24px 0;
      text-align: left;
    }

    .pricing-features li {
      padding: 8px 0;
      font-size: 0.9rem;
      color: var(--text-muted);
      border-bottom: 1px dashed var(--border-color);
    }

    /* 流程步骤模块 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .step-number {
      width: 36px;
      height: 36px;
      background: var(--primary-color);
      color: #FFF;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }

    .step-box h4 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .step-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 用户评论卡片 6条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 24px;
    }

    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #F59E0B;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    .author-avatar-badge {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, #C7D2FE, #E0E7FF);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }

    .author-meta h5 {
      font-size: 0.92rem;
      font-weight: 800;
      color: #0F172A;
    }

    .author-meta span {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 12条 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 24px;
      font-size: 1rem;
      font-weight: 700;
      color: #0F172A;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: background-color 0.2s;
    }

    .faq-question:hover {
      background-color: #F8FAFC;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      color: var(--primary-color);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #FAFAFA;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
    }

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

    /* 需求匹配与联系我们表单 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #FFFFFF;
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-panel h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .contact-info-panel p {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 0.95rem;
    }

    .contact-channel-item {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
      font-size: 0.95rem;
    }

    .channel-icon {
      width: 36px;
      height: 36px;
      background: #EEF2FF;
      color: var(--primary-color);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .qr-showcase {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-top: 24px;
      padding-top: 24px;
      border-top: 1px dashed var(--border-color);
    }

    .qr-showcase img {
      width: 100px;
      height: 100px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.92rem;
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-sm);
      background: #F8FAFC;
      transition: border-color 0.2s, background-color 0.2s;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

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

    /* 资讯动态与文章列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
    }

    .article-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .article-item:hover {
      border-color: var(--primary-color);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .article-category {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-pink);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .article-item h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #0F172A;
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-item span.link-text {
      margin-top: auto;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      gap: 4px;
    }

    /* 友情链接专区 */
    .footer-friendlinks {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      padding: 24px 0;
    }

    .friendlinks-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      font-size: 0.88rem;
    }

    .friendlinks-title {
      font-weight: 800;
      color: var(--text-main);
      margin-right: 8px;
    }

    .friendlinks-content a {
      color: var(--text-muted);
      text-decoration: none;
      padding: 4px 10px;
      background: #F1F5F9;
      border-radius: 4px;
      transition: all 0.2s;
    }

    .friendlinks-content a:hover {
      color: var(--primary-color);
      background: #EEF2FF;
    }

    /* 页脚 */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 50px 0 30px;
      font-size: 0.9rem;
    }

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

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links a {
      color: #94A3B8;
      text-decoration: none;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: #64748B;
    }

    .footer-bottom a {
      color: #94A3B8;
      text-decoration: none;
    }

    /* 悬浮工具栏 */
    .float-toolbar {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFFFFF;
      color: var(--primary-color);
      border: 1px solid var(--border-bright);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      text-decoration: none;
      cursor: pointer;
      transition: all 0.2s;
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary-color);
      color: #FFFFFF;
      transform: scale(1.08);
    }

    .float-tooltip {
      position: absolute;
      right: 58px;
      background: #1E293B;
      color: #FFF;
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.78rem;
      white-space: nowrap;
      display: none;
    }

    .float-btn:hover .float-tooltip {
      display: block;
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-stats-panel {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-platform-grid, 
      .solution-case-wrap,
      .contact-form-layout {
        grid-template-columns: 1fr;
      }
      .footer-inner-grid {
        grid-template-columns: 1fr 1fr;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .nav-cta {
        display: none;
      }
    }

    @media (max-width: 640px) {
      .hero-stats-panel {
        grid-template-columns: 1fr;
      }
      .stat-item {
        border-right: none;
        border-bottom: 1px dashed var(--border-color);
        padding-bottom: 12px;
      }
      .stat-item:last-child {
        border-bottom: none;
      }
      .timeline-steps {
        grid-template-columns: 1fr;
      }
      .footer-inner-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }