:root {
      --primary-laser-1: #6366f1;
      --primary-laser-2: #ec4899;
      --primary-laser-3: #06b6d4;
      --laser-gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #06b6d4 100%);
      --laser-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.08) 50%, rgba(6, 182, 212, 0.08) 100%);
      --laser-border: linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(236, 72, 153, 0.4), rgba(6, 182, 212, 0.4));
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.03);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.1), 0 8px 10px -6px rgba(236, 72, 153, 0.06);
      --shadow-laser: 0 12px 30px rgba(99, 102, 241, 0.18);
      --container-width: 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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.03) 0%, transparent 60%);
      background-attachment: fixed;
    }

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

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

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

    .brand-logo-wrap {
      max-height: 42px;
      display: flex;
      align-items: center;
    }

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--laser-gradient);
      -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-item {
      position: relative;
    }

    .nav-link {
      display: block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-sub);
      border-radius: var(--radius-sm);
      transition: all 0.2s;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary-laser-1);
      background: rgba(99, 102, 241, 0.06);
    }

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

    .btn-laser-sm {
      padding: 8px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #fff !important;
      background: var(--laser-gradient);
      border-radius: 30px;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
      border: none;
      cursor: pointer;
    }

    .btn-laser-sm:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(236, 72, 153, 0.35);
    }

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

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
      position: absolute;
      top: 72px;
      left: 0;
      width: 100%;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 20px;
      box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    }

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

    .mobile-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .mobile-nav-link {
      display: block;
      padding: 10px 12px;
      font-weight: 600;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      border-left: 3px solid transparent;
    }

    .mobile-nav-link:hover {
      border-left-color: var(--primary-laser-1);
      background: #f1f5f9;
      color: var(--primary-laser-1);
    }

    /* 通用组件 */
    section {
      padding: 80px 0;
      position: relative;
    }

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

    .section-badge {
      display: inline-block;
      padding: 5px 16px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary-laser-1);
      background: rgba(99, 102, 241, 0.1);
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: 20px;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .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-sub);
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 100px 0 80px;
      background: radial-gradient(100% 100% at 50% 0%, rgba(99, 102, 241, 0.12) 0%, rgba(236, 72, 153, 0.05) 50%, rgba(248, 250, 252, 0) 100%);
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-sub);
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 8px #10b981;
    }

    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      color: #0f172a;
      letter-spacing: -0.5px;
    }

    .hero-h1 span {
      background: var(--laser-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .btn-laser-main {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff !important;
      background: var(--laser-gradient);
      border-radius: 30px;
      box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 2px solid transparent;
    }

    .btn-laser-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(236, 72, 153, 0.45);
    }

    .btn-outline {
      padding: 14px 30px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 30px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }

    .btn-outline:hover {
      background: #f8fafc;
      border-color: #cbd5e1;
      transform: translateY(-2px);
    }

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

    .stat-laser-card {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(226, 232, 240, 0.8);
      padding: 24px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .stat-laser-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--laser-gradient);
    }

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      background: var(--laser-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台介绍板块 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .intro-info h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 18px;
      color: var(--text-main);
    }

    .intro-info p {
      color: var(--text-sub);
      margin-bottom: 16px;
      font-size: 1rem;
      line-height: 1.7;
    }

    .intro-features-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
      list-style: none;
    }

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

    .check-icon {
      width: 20px;
      height: 20px;
      background: rgba(99, 102, 241, 0.12);
      color: var(--primary-laser-1);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      flex-shrink: 0;
    }

    .intro-visual-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .tag-cloud-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .model-tag {
      padding: 6px 14px;
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-sub);
      transition: all 0.2s;
    }

    .model-tag:hover {
      background: rgba(99, 102, 241, 0.1);
      border-color: rgba(99, 102, 241, 0.3);
      color: var(--primary-laser-1);
      transform: translateY(-2px);
    }

    /* 核心场景网格 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-laser);
      border-color: rgba(99, 102, 241, 0.3);
    }

    .card-icon {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: var(--laser-soft);
      border: 1px solid rgba(99, 102, 241, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 18px;
      color: var(--primary-laser-1);
    }

    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

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

    .card-tag {
      font-size: 0.8rem;
      padding: 3px 10px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 4px;
      color: var(--text-muted);
      align-self: flex-start;
    }

    /* 流程步骤 */
    .timeline-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 36px;
      height: 36px;
      background: var(--laser-gradient);
      color: #fff;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 16px;
    }

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

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 对比评测表格 */
    .eval-highlight-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 24px;
      background-image: var(--laser-soft);
    }

    .eval-score-item {
      text-align: center;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.6rem;
      margin-bottom: 6px;
    }

    .eval-big-score {
      font-size: 2.6rem;
      font-weight: 900;
      background: var(--laser-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }

    .eval-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-sub);
      margin-top: 6px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

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

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.95rem;
    }

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

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

    .custom-table .col-highlight {
      background: rgba(99, 102, 241, 0.03);
      font-weight: 600;
      color: var(--primary-laser-1);
    }

    .custom-table .col-peer {
      color: var(--text-muted);
    }

    /* 案例展示区 */
    .case-media-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
      margin-bottom: 30px;
    }

    .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;
    }

    .img-wrapper {
      position: relative;
      width: 100%;
      overflow: hidden;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    .img-wrapper:hover img {
      transform: scale(1.02);
    }

    .media-card-body {
      padding: 20px;
    }

    .media-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .media-card-desc {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 客户评价 */
    .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-text {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

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

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--laser-soft);
      border: 1px solid rgba(99, 102, 241, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-laser-1);
    }

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

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

    /* FAQ折叠 */
    .faq-wrapper {
      max-width: 860px;
      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;
      transition: all 0.25s;
    }

    .faq-item.active {
      border-color: rgba(99, 102, 241, 0.4);
      box-shadow: var(--shadow-sm);
    }

    .faq-header {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary-laser-1);
      transition: transform 0.25s;
    }

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

    .faq-body {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-sub);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-body {
      padding: 0 22px 20px;
      max-height: 300px;
    }

    /* 文章与资讯 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
      margin-top: 24px;
    }

    .article-item-link {
      display: block;
      background: #ffffff;
      padding: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-sub);
      transition: all 0.2s;
    }

    .article-item-link:hover {
      color: var(--primary-laser-1);
      border-color: var(--primary-laser-1);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    /* 表单与联系区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-side h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }

    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-sub);
    }

    .qr-container {
      margin-top: 24px;
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      padding: 14px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
    }

    .qr-container img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      border-radius: 4px;
    }

    .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: #f8fafc;
      color: var(--text-main);
      transition: border-color 0.2s;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-laser-1);
      background: #ffffff;
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      background: var(--laser-gradient);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
      transition: all 0.25s;
    }

    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    /* 加盟代理模块 */
    .agency-banner {
      background: var(--laser-gradient);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      color: #ffffff;
      text-align: center;
      box-shadow: var(--shadow-laser);
    }

    .agency-banner h3 {
      font-size: 2rem;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .agency-banner p {
      font-size: 1.1rem;
      opacity: 0.95;
      max-width: 700px;
      margin: 0 auto 28px;
      line-height: 1.6;
    }

    /* 友情链接与页脚 */
    .friend-links-box {
      border-top: 1px solid var(--border-color);
      padding: 30px 0;
      margin-top: 40px;
    }

    .friend-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .friend-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-list a {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    .friend-list a:hover {
      color: var(--primary-laser-1);
    }

    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 0.9rem;
    }

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

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

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

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动工具栏 */
    .floating-bar {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(0,0,0,0.1);
      cursor: pointer;
      color: var(--text-main);
      font-size: 1.2rem;
      transition: all 0.25s;
    }

    .floating-btn:hover {
      background: var(--laser-gradient);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-h1 { font-size: 2.3rem; }
      .scenario-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline-flow { grid-template-columns: repeat(2, 1fr); }
      .case-media-grid { grid-template-columns: 1fr; }
      .intro-grid { grid-template-columns: 1fr; }
      .contact-wrapper { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .nav-links, .header-actions .btn-laser-sm { display: none; }
      .menu-toggle { display: block; }
    }

    @media (max-width: 640px) {
      .hero-h1 { font-size: 1.85rem; }
      .scenario-grid { grid-template-columns: 1fr; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .timeline-flow { grid-template-columns: 1fr; }
      .intro-features-list { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .eval-highlight-box { flex-direction: column; }
    }