:root {
      --primary-color: #059669;
      --primary-light: #10b981;
      --primary-dark: #047857;
      --primary-accent: #34d399;
      --primary-soft: #ecfdf5;
      --primary-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%);
      --bg-body: #f8fafc;
      --bg-surface: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #a7f3d0;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
      --shadow-green: 0 10px 25px -5px rgba(16, 185, 129, 0.25);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-full: 9999px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(16, 185, 129, 0.15);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .brand-box .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 13px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-dark);
      background-color: var(--primary-soft);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      white-space: nowrap;
      box-shadow: var(--shadow-sm);
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: var(--shadow-green);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #047857 0%, #059669 100%);
      box-shadow: 0 12px 24px -6px rgba(16, 185, 129, 0.4);
      transform: translateY(-1px);
    }

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

    .btn-outline:hover {
      background-color: var(--primary-soft);
      border-color: var(--primary-dark);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* 纯色科技感首屏 Hero (严禁出现图片) */
    .hero-section {
      background: radial-gradient(circle at 50% 0%, #d1fae5 0%, #ecfdf5 45%, #f8fafc 80%);
      padding: 80px 0 60px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-inner {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #a7f3d0;
      color: var(--primary-dark);
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(16, 185, 129, 0.12);
    }

    .hero-badge::before {
      content: "";
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--primary-light);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
    }

    .hero-title {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

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

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-cta-group .btn-lg {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
    }

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

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-top: 3px solid var(--primary-light);
      padding: 24px 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

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

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.1;
      margin-bottom: 6px;
    }

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

    /* 通用Section布局 */
    .section {
      padding: 85px 0;
      position: relative;
    }

    .section-alt {
      background-color: #f1f5f9;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 55px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-dark);
      background-color: var(--primary-soft);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      border: 1px solid rgba(16, 185, 129, 0.25);
    }

    .section-title {
      font-size: clamp(1.65rem, 3vw, 2.25rem);
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

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

    .about-content h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
    }

    .about-content p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 0.98rem;
    }

    .feature-points {
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .feature-point-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .check-icon {
      width: 20px;
      height: 20px;
      flex-shrink: 0;
      background-color: var(--primary-soft);
      color: var(--primary-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 0.75rem;
      margin-top: 3px;
    }

    .about-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .about-card-box::before {
      content: "";
      position: absolute;
      top: -2px;
      left: 30px;
      right: 30px;
      height: 3px;
      background: var(--primary-gradient);
      border-radius: 3px 3px 0 0;
    }

    /* 服务与能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

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

    .service-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--primary-dark);
      background-color: var(--primary-soft);
      padding: 2px 10px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }

    .service-card h3 {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

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

    .service-card-meta {
      font-size: 0.82rem;
      color: var(--primary-dark);
      font-weight: 600;
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    /* 支持大模型标签矩阵 */
    .model-pills-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      margin-top: 40px;
      text-align: center;
    }

    .model-pills-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 20px;
    }

    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-pill {
      font-size: 0.85rem;
      font-weight: 500;
      padding: 6px 14px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      border: 1px solid rgba(16, 185, 129, 0.2);
      border-radius: var(--radius-full);
      transition: all 0.2s ease;
    }

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

    /* 行业解决方案与一站式制作 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

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

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: var(--shadow-sm);
    }

    .step-card h3 {
      font-size: 1.08rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测板块（核心强化：推荐程度五星，评分9.9，满分10） */
    .benchmark-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 35px;
      box-shadow: var(--shadow-md);
    }

    .benchmark-header {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 28px;
    }

    .benchmark-score-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-badge-huge {
      background: var(--primary-soft);
      border: 2px solid var(--primary-light);
      padding: 10px 20px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .score-badge-huge .score-val {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary-dark);
      line-height: 1;
    }

    .score-badge-huge .score-max {
      font-size: 0.82rem;
      color: var(--text-light);
      font-weight: 600;
    }

    .benchmark-stars-info h4 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stars-render {
      color: #f59e0b;
      font-size: 1.3rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.94rem;
    }

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

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

    .compare-table tr:hover td {
      background-color: #f8fafc;
    }

    .compare-table td.highlight-col {
      background-color: rgba(236, 253, 245, 0.45);
      font-weight: 600;
      color: var(--primary-dark);
      border-left: 1px solid #d1fae5;
      border-right: 1px solid #d1fae5;
    }

    .compare-table th.highlight-col {
      background-color: var(--primary-soft);
      color: var(--primary-dark);
      border-left: 1px solid #a7f3d0;
      border-right: 1px solid #a7f3d0;
    }

    /* 案例中心 & 素材图排版 */
    .media-gallery-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 20px;
    }

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

    .media-card-large {
      grid-column: span 6;
    }

    .media-card-square {
      grid-column: span 6;
    }

    .media-card-banner {
      grid-column: span 4;
    }

    .media-img-container {
      width: 100%;
      overflow: hidden;
      background-color: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-img-container img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
      object-fit: cover;
    }

    .media-card:hover .media-img-container img {
      transform: scale(1.03);
    }

    .media-info {
      padding: 16px;
    }

    .media-info h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

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

    /* Token 比价与算力收益 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .token-card.featured {
      border: 2px solid var(--primary-light);
      box-shadow: var(--shadow-green);
    }

    .token-tag-top {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 14px;
      border-radius: var(--radius-full);
    }

    .token-price-big {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin: 16px 0 8px;
    }

    .token-price-big span {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-light);
    }

    .token-features-list {
      text-align: left;
      margin: 20px 0 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .token-features-list li {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 客户评价 6条用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
      gap: 24px;
    }

    .testimonial-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;
    }

    .testimonial-content {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      font-style: italic;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .avatar-mock {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      border: 1px solid #a7f3d0;
    }

    .author-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* 帮助中心 & AI百科 */
    .wiki-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .wiki-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
    }

    .wiki-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

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

    /* 行业资讯 & 最新文章 */
    .article-section-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
    }

    .article-link-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 20px;
    }

    .article-item-card {
      padding: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background-color: #f8fafc;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s ease;
    }

    .article-item-card:hover {
      background-color: var(--primary-soft);
      border-color: var(--primary-light);
      color: var(--primary-dark);
      transform: translateX(3px);
    }

    /* FAQ折叠组件 */
    .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);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-family: inherit;
      transition: background-color 0.2s ease;
    }

    .faq-question:hover {
      background-color: #f8fafc;
      color: var(--primary-dark);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
      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 cubic-bezier(0, 1, 0, 1);
      background-color: #ffffff;
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed #f1f5f9;
      margin-top: 4px;
      padding-top: 14px;
    }

    /* 需求匹配与联系我们表单 */
    .contact-container-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 35px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-panel h3 {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 20px;
    }

    .contact-meta-item {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 18px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .contact-icon-bubble {
      width: 38px;
      height: 38px;
      border-radius: var(--radius-sm);
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }

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

    .qr-showcase img {
      width: 110px;
      height: 110px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      display: block;
    }

    .qr-desc h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .qr-desc p {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.5;
    }

    .contact-form-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 35px;
      box-shadow: var(--shadow-md);
      position: relative;
    }

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

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-family: inherit;
      color: var(--text-main);
      background-color: #f8fafc;
      transition: all 0.2s ease;
    }

    .form-control:focus {
      outline: none;
      background-color: #ffffff;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 友情链接与页脚统一宽度容器 */
    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 45px 0 30px;
      margin-top: auto;
    }

    .footer-links-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.88rem;
    }

    .footer-links-row .links-title {
      font-weight: 700;
      color: var(--text-main);
      margin-right: 8px;
    }

    .footer-links-row a {
      color: var(--text-muted);
      padding: 4px 10px;
      background-color: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .footer-links-row a:hover {
      color: var(--primary-dark);
      background-color: var(--primary-soft);
      border-color: var(--primary-light);
    }

    .footer-bottom-flex {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 0.86rem;
      color: var(--text-light);
    }

    /* 悬浮客服与返回顶部小组件 */
    .floating-tools {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.15rem;
      transition: all 0.25s ease;
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary-gradient);
      color: #ffffff;
      transform: translateY(-3px);
    }

    .float-qr-popover {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      width: 170px;
      text-align: center;
    }

    .float-btn:hover .float-qr-popover {
      display: block;
    }

    .float-qr-popover img {
      width: 140px;
      height: 140px;
      display: block;
      margin: 0 auto 8px;
      border-radius: var(--radius-sm);
    }

    .float-qr-popover p {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .token-grid {
        grid-template-columns: 1fr;
      }
      .wiki-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 0;
      }

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

      .nav-links li a {
        padding: 12px 16px;
        border-bottom: 1px solid #f8fafc;
      }

      .mobile-menu-toggle {
        display: block;
      }

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

      .media-card-large,
      .media-card-square,
      .media-card-banner {
        grid-column: span 12;
      }

      .hero-stats-grid,
      .workflow-steps {
        grid-template-columns: 1fr;
      }

      .benchmark-header {
        flex-direction: column;
        align-items: flex-start;
      }

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