:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --rainbow-1: #ff5e62;
      --rainbow-2: #ff9966;
      --rainbow-3: #f9d423;
      --rainbow-4: #00c9ff;
      --rainbow-5: #92fe9d;
      --rainbow-6: #8e2de2;
      --rainbow-grad: linear-gradient(135deg, #ff5e62 0%, #ff9966 20%, #f9d423 40%, #00c9ff 60%, #8e2de2 100%);
      --rainbow-subtle: linear-gradient(135deg, rgba(255,94,98,0.06), rgba(249,212,35,0.06), rgba(0,201,255,0.06), rgba(142,45,226,0.06));
      --text-main: #1e293b;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.06), 0 8px 10px -6px rgba(0,0,0,0.04);
      --shadow-hover: 0 20px 30px -10px rgba(79,70,229,0.15);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 94, 98, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 40%, rgba(0, 201, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(142, 45, 226, 0.04) 0%, transparent 50%);
      background-attachment: fixed;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    /* 顶部彩虹条 */
    .top-rainbow-bar {
      height: 4px;
      background: var(--rainbow-grad);
      width: 100%;
      position: fixed;
      top: 0;
      left: 0;
      z-index: 1001;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      z-index: 1000;
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-box img.ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
      border-radius: var(--radius-sm);
    }

    .brand-text-wrap {
      display: flex;
      flex-direction: column;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.2;
    }

    .brand-sub {
      font-size: 0.75rem;
      color: var(--text-light);
    }

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

    .nav-links a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      position: relative;
    }

    .nav-links a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.05);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 9px 20px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--rainbow-grad);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 94, 98, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(142, 45, 226, 0.4);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .btn-outline:hover {
      background: rgba(79, 70, 229, 0.06);
      border-color: var(--primary);
      color: var(--primary);
    }

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

    /* 通用版块样式 */
    section {
      padding: 70px 0;
      position: relative;
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 999px;
      background: var(--rainbow-subtle);
      border: 1px solid rgba(79, 70, 229, 0.15);
      color: var(--primary);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Hero 首屏 (严格无图片) */
    .hero-section {
      padding: 85px 0 60px 0;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.7) 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid rgba(249, 212, 35, 0.5);
      padding: 6px 18px;
      border-radius: 999px;
      font-size: 0.88rem;
      color: var(--text-main);
      box-shadow: 0 4px 15px rgba(249, 212, 35, 0.15);
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      display: inline-block;
      animation: pulseDot 1.8s infinite;
    }

    @keyframes pulseDot {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    .hero-title {
      font-size: 2.7rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      max-width: 900px;
    }

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

    .hero-subtitle {
      font-size: 1.18rem;
      color: var(--text-muted);
      max-width: 800px;
      margin-bottom: 34px;
      line-height: 1.7;
    }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
      margin-bottom: 45px;
    }

    .btn-hero-primary {
      padding: 14px 34px;
      font-size: 1.05rem;
    }

    .btn-hero-outline {
      padding: 14px 30px;
      font-size: 1.05rem;
    }

    /* 纯 CSS 科技数据面板 (Hero 底部无图卡片) */
    .hero-tech-card {
      width: 100%;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 30px;
      margin-top: 15px;
      position: relative;
    }

    .tech-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid #f1f5f9;
      padding-bottom: 16px;
      margin-bottom: 24px;
    }

    .tech-dots {
      display: flex;
      gap: 6px;
    }

    .tech-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .tech-dot-r { background: #ff5f56; }
    .tech-dot-y { background: #ffbd2e; }
    .tech-dot-g { background: #27c93f; }

    .tech-status {
      font-size: 0.85rem;
      color: #10b981;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
    }

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

    .stat-item {
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid #edf2f7;
      transition: transform 0.25s ease;
    }

    .stat-item:hover {
      transform: translateY(-3px);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 6px;
    }

    .stat-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
    }

    .stat-desc {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 平台支持大模型标签栏 */
    .model-tags-bar {
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px dashed #e2e8f0;
      text-align: center;
    }

    .model-tags-title {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 14px;
      font-weight: 600;
    }

    .model-tags-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-pill {
      font-size: 0.8rem;
      padding: 4px 12px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 6px;
      color: var(--text-muted);
      font-weight: 500;
    }

    .model-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 通用卡片网格 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .cards-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    /* 创意卡片 */
    .feature-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--rainbow-subtle);
      border: 1px solid rgba(79, 70, 229, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      color: var(--primary);
      font-weight: 800;
      font-size: 1.2rem;
    }

    .feature-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 流程时间线 */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--rainbow-grad);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 16px;
      font-size: 0.95rem;
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    /* 对比评测表格板块 */
    .review-score-panel {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 36px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .score-summary-left {
      max-width: 500px;
    }

    .score-summary-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .score-summary-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .score-badge-right {
      display: flex;
      align-items: center;
      gap: 20px;
      background: var(--rainbow-subtle);
      padding: 16px 28px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(79, 70, 229, 0.2);
    }

    .score-big {
      font-size: 3rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-meta {
      display: flex;
      flex-direction: column;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .score-rank {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.92rem;
    }

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

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

    .table-highlight {
      background: rgba(79, 70, 229, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* 案例展示区 (含图) */
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease;
    }

    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .case-img-wrap {
      width: 100%;
      overflow: hidden;
      background: #f1f5f9;
    }

    .case-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-body {
      padding: 20px;
    }

    .case-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 宣传图画廊 */
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 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);
      background: #ffffff;
    }

    .banner-item img.ai-page-image {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .testimonial-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      font-style: normal;
    }

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

    .user-avatar-badge {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
    }

    .user-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

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

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary);
    }

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

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px 24px;
    }

    /* 表单板块 */
    .form-layout-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1fr;
      overflow: hidden;
    }

    .form-info-panel {
      padding: 45px;
      background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
      color: #ffffff;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .form-info-panel h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: #ffffff;
    }

    .form-info-panel p {
      font-size: 0.95rem;
      color: #cbd5e1;
      line-height: 1.65;
      margin-bottom: 24px;
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      font-size: 0.92rem;
      color: #e2e8f0;
    }

    .qr-container {
      margin-top: 20px;
      padding: 16px;
      background: rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      display: inline-flex;
      align-items: center;
      gap: 16px;
    }

    .qr-container img {
      width: 80px;
      height: 80px;
      border-radius: 6px;
      background: #ffffff;
    }

    .form-content-panel {
      padding: 45px;
    }

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

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.92rem;
      color: var(--text-main);
      background: #f8fafc;
      transition: all 0.25s ease;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }

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

    /* 行业资讯 & 最新文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }

    .article-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      margin-top: 14px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .article-link:hover {
      text-decoration: underline;
    }

    /* 底部友情链接与版权区 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 25px 0;
      border-top: 4px solid #4f46e5;
    }

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

    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-links-list li {
      margin-bottom: 10px;
      font-size: 0.88rem;
    }

    .footer-links-list a {
      color: #94a3b8;
    }

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

    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .footer-friend-links a {
      font-size: 0.85rem;
      color: #94a3b8;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
    }

    .footer-friend-links a:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.1);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 25px;
      text-align: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 浮动客服挂件 */
    .float-service-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-weight: bold;
      border: 1px solid var(--border-color);
      transition: transform 0.2s ease;
      position: relative;
    }

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

    .float-btn-primary {
      background: var(--rainbow-grad);
      color: #ffffff;
      border: none;
    }

    .qr-hover-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      display: none;
      width: 150px;
      text-align: center;
    }

    .qr-hover-pop img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 4px;
    }

    .qr-hover-pop p {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 6px;
    }

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

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.2rem; }
      .cards-grid-4 { grid-template-columns: repeat(2, 1fr); }
      .cards-grid-3 { grid-template-columns: repeat(2, 1fr); }
      .process-steps { grid-template-columns: repeat(2, 1fr); }
      .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
      .articles-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-top-grid { grid-template-columns: 1fr 1fr; }
      .banner-gallery-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .header-inner { height: 60px; }
      .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show { display: flex; }
      .nav-links a { width: 100%; text-align: center; padding: 10px 0; }
      .mobile-menu-toggle { display: block; }
      .hero-title { font-size: 1.8rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .cards-grid-3, .cards-grid-4, .cards-grid-2, .process-steps, .testimonials-grid, .articles-grid, .banner-gallery-grid {
        grid-template-columns: 1fr;
      }
      .form-layout-box { grid-template-columns: 1fr; }
      .form-info-panel, .form-content-panel { padding: 24px; }
      .review-score-panel { flex-direction: column; text-align: center; }
      .footer-top-grid { grid-template-columns: 1fr; }
    }