/* CSS Reset & Variables (浅色底 + 霓虹亮彩点缀) */
    :root {
      --primary: #00d2ff;
      --primary-dark: #0072ff;
      --secondary: #ff007f;
      --accent: #7928ca;
      --cyan-glow: rgba(0, 210, 255, 0.4);
      --pink-glow: rgba(255, 0, 127, 0.35);
      --purple-glow: rgba(121, 40, 202, 0.25);
      
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 9999px;
      
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 30px rgba(0, 114, 255, 0.08);
      --shadow-neon: 0 0 25px rgba(0, 210, 255, 0.3), 0 0 50px rgba(255, 0, 127, 0.15);
      
      --container-max: 1200px;
      --container-pad: 24px;
    }

    * {
      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-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      position: relative;
    }

    /* 贯穿全页的霓虹亮彩环境光 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 100vw;
      max-width: 1400px;
      height: 100vh;
      background: radial-gradient(circle at 15% 10%, var(--cyan-glow), transparent 45%),
                  radial-gradient(circle at 85% 30%, var(--pink-glow), transparent 50%),
                  radial-gradient(circle at 50% 85%, var(--purple-glow), transparent 50%);
      pointer-events: none;
      z-index: 0;
      opacity: 0.65;
    }

    /* 统一主容器 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: var(--container-pad);
      padding-right: var(--container-pad);
      position: relative;
      z-index: 1;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: all 0.3s ease;
    }
    .header-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-logo-wrap {
      max-height: 40px;
      display: flex;
      align-items: center;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, #0f172a, var(--primary-dark));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--primary-dark);
      background: rgba(0, 210, 255, 0.08);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      text-decoration: none;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-neon {
      background: linear-gradient(135deg, #00d2ff 0%, #0072ff 50%, #ff007f 100%);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(0, 114, 255, 0.35);
    }
    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(255, 0, 127, 0.4);
      color: #ffffff;
    }
    .btn-outline {
      background: #ffffff;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary-dark);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn-sm {
      padding: 6px 16px;
      font-size: 0.85rem;
    }

    /* 汉堡菜单按钮 (移动端) */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 通用章节样式 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 16px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      border-radius: var(--radius-pill);
      background: linear-gradient(90deg, rgba(0, 210, 255, 0.15), rgba(255, 0, 127, 0.15));
      color: var(--primary-dark);
      border: 1px solid rgba(0, 210, 255, 0.3);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 纯代码与动效首屏 (Hero - 严禁出现图片) */
    .hero-section {
      padding: 90px 0 70px;
      text-align: center;
      position: relative;
    }
    .hero-content {
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(0, 210, 255, 0.4);
      border-radius: var(--radius-pill);
      box-shadow: 0 4px 15px rgba(0,0,0,0.03);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary-dark);
      margin-bottom: 24px;
    }
    .hero-tag-dot {
      width: 8px;
      height: 8px;
      background: #00e676;
      border-radius: 50%;
      box-shadow: 0 0 10px #00e676;
    }
    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      color: var(--text-main);
      letter-spacing: -1px;
    }
    .hero-title .neon-text {
      background: linear-gradient(135deg, #0072ff, #ff007f);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }
    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 740px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-hero-primary {
      padding: 14px 36px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
      background: linear-gradient(135deg, #00d2ff, #0072ff 45%, #ff007f 100%);
      color: #fff;
      text-decoration: none;
      box-shadow: 0 8px 30px rgba(0, 114, 255, 0.4), 0 0 20px rgba(255, 0, 127, 0.3);
      transition: all 0.3s ease;
    }
    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 40px rgba(255, 0, 127, 0.5);
      color: #fff;
    }

    /* 首屏数据指标卡 (CSS 纯样式构建) */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .stat-card {
      background: #ffffff;
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, border-color 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 210, 255, 0.4);
      box-shadow: var(--shadow-md);
    }
    .stat-card:hover::before {
      opacity: 1;
    }
    .stat-value {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 模型支持标签云 */
    .models-marquee-wrap {
      margin-top: 40px;
      padding: 20px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .models-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-light);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 14px;
    }
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-tag {
      padding: 6px 14px;
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      transition: all 0.2s ease;
    }
    .model-tag:hover {
      background: #ffffff;
      border-color: var(--primary);
      color: var(--primary-dark);
      transform: scale(1.05);
      box-shadow: 0 2px 10px rgba(0, 210, 255, 0.2);
    }

    /* 通用卡片与网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      border-color: rgba(0, 210, 255, 0.4);
      box-shadow: 0 15px 35px rgba(0, 114, 255, 0.1);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(255, 0, 127, 0.15));
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 平台介绍大区 */
    .intro-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
    }
    .intro-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .intro-text h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .intro-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1rem;
    }
    .intro-features-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .intro-features-list li {
      font-size: 0.9rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
    }
    .intro-features-list li::before {
      content: "✓";
      color: #00c853;
      font-weight: bold;
    }
    .media-card-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .media-card-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-card-wrap:hover img {
      transform: scale(1.03);
    }

    /* 标准制作流程 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-num {
      font-size: 2rem;
      font-weight: 900;
      color: rgba(0, 210, 255, 0.25);
      margin-bottom: 10px;
      line-height: 1;
    }
    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测板块 */
    .comparison-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.08), rgba(255, 0, 127, 0.08));
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: var(--radius-md);
      padding: 24px 32px;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-badge {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--secondary);
      line-height: 1;
    }
    .score-detail h4 {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .score-detail p {
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .stars {
      color: #ffb300;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .eval-table th {
      background: var(--bg-alt);
      color: var(--text-main);
      font-weight: 700;
    }
    .eval-table tr:hover td {
      background: rgba(0, 210, 255, 0.03);
    }
    .highlight-cell {
      font-weight: 700;
      color: var(--primary-dark);
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 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-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .review-user-name {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-user-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .review-body {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 文章与百科推荐 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .article-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .article-box h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .article-list {
      list-style: none;
    }
    .article-list li {
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-color);
    }
    .article-list li:last-child {
      border-bottom: none;
    }
    .article-list a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.92rem;
      transition: color 0.2s;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .article-list a:hover {
      color: var(--primary-dark);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-question:hover {
      background: rgba(0, 210, 255, 0.03);
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary-dark);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      background: #fafbfc;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px 20px;
    }

    /* 需求匹配与联系我们表单 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 30px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .contact-info-col h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .contact-info-col p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .contact-item-row {
      margin-bottom: 16px;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .contact-item-row strong {
      color: var(--text-light);
      display: inline-block;
      width: 80px;
    }
    .qr-wrapper {
      margin-top: 24px;
      padding: 16px;
      background: var(--bg-alt);
      border-radius: var(--radius-md);
      display: inline-block;
      text-align: center;
    }
    .qr-wrapper img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 8px;
    }
    .qr-wrapper span {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #fff;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary-dark);
      box-shadow: 0 0 0 3px rgba(0, 114, 255, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }
    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
      color: #fff;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(0, 114, 255, 0.3);
      transition: all 0.25s;
    }
    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 0, 127, 0.35);
    }

    /* 案例展示横幅区 */
    .banner-gallery {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }
    .banner-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .banner-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      position: relative;
      z-index: 10;
    }
    .footer-content-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .footer-links-col h5 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .footer-friend-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.88rem;
      background: var(--bg-alt);
      padding: 4px 10px;
      border-radius: 4px;
      transition: all 0.2s ease;
    }
    .footer-friend-links a:hover {
      color: var(--primary-dark);
      background: rgba(0, 210, 255, 0.1);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 浮动操作按钮 */
    .float-panel {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      text-decoration: none;
      font-size: 1.2rem;
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .float-btn:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-3px);
      box-shadow: 0 4px 15px rgba(0, 114, 255, 0.4);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.2rem; }
      .grid-3, .grid-4, .timeline-steps, .hero-stats-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid, .contact-card-grid, .footer-content-grid, .banner-gallery {
        grid-template-columns: 1fr;
      }
      .nav-links { display: none; }
      .menu-toggle { display: block; }
      .nav-links.mobile-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.mobile-active li { width: 100%; }
      .nav-links.mobile-active li a { display: block; width: 100%; padding: 10px 14px; }
    }

    @media (max-width: 640px) {
      .hero-title { font-size: 1.8rem; }
      .grid-3, .grid-4, .timeline-steps, .hero-stats-grid, .reviews-grid, .articles-grid, .grid-2 {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        text-align: center;
      }
      .score-left {
        flex-direction: column;
      }
    }