/* 基础重置与彩虹多彩主题变量 */
    :root {
      --primary-blue: #2563eb;
      --primary-purple: #7c3aed;
      --primary-pink: #db2777;
      --primary-orange: #ea580c;
      --primary-green: #059669;
      --rainbow-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 30%, #db2777 65%, #ea580c 100%);
      --rainbow-soft: linear-gradient(135deg, rgba(37,99,235,0.06) 0%, rgba(124,58,237,0.06) 35%, rgba(219,39,119,0.06) 70%, rgba(234,88,12,0.06) 100%);
      --rainbow-border: linear-gradient(135deg, rgba(37,99,235,0.3) 0%, rgba(124,58,237,0.3) 33%, rgba(219,39,119,0.3) 66%, rgba(234,88,12,0.3) 100%);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #fbfcfe;
      --bg-card: #ffffff;
      --bg-card-alt: #f8faff;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.07), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-rainbow: 0 12px 30px -8px rgba(124, 58, 237, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(37, 99, 235, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 40%, rgba(219, 39, 119, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 30% 80%, rgba(124, 58, 237, 0.03) 0%, transparent 50%);
      background-attachment: fixed;
      overflow-x: hidden;
    }

    /* 统一居中容器 */
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 导航栏 */
    .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);
      transition: all 0.3s ease;
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }

    .brand-title-badge {
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.95rem;
      color: var(--text-muted);
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s ease;
    }

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

    .nav-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-full);
      text-decoration: none;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      line-height: 1.2;
    }

    .btn-rainbow {
      background: var(--rainbow-gradient);
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(124, 58, 237, 0.25);
    }

    .btn-rainbow:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(124, 58, 237, 0.35);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border-color: var(--border-color);
    }

    .btn-outline:hover {
      border-color: var(--primary-purple);
      color: var(--primary-purple);
      background: rgba(124, 58, 237, 0.04);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 首屏 Hero - 严格无图，纯CSS与色彩几何科技感 */
    .hero-section {
      padding: 70px 0 60px;
      background: var(--rainbow-soft);
      position: relative;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      top: -100px;
      left: 10%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
      filter: blur(50px);
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      bottom: -100px;
      right: 10%;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(219,39,119,0.12) 0%, transparent 70%);
      filter: blur(50px);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .rainbow-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #f0e6fc;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary-purple);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .pill-dot {
      width: 8px;
      height: 8px;
      background: var(--rainbow-gradient);
      border-radius: 50%;
      display: inline-block;
    }

    .hero-h1 {
      font-size: clamp(2rem, 4vw, 2.75rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

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

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

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

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

    .hero-stat-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .stat-item {
      text-align: center;
      position: relative;
    }

    .stat-item:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background-color: var(--border-color);
    }

    .stat-val {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      display: block;
      margin-bottom: 4px;
    }

    .stat-val.c-blue { color: var(--primary-blue); }
    .stat-val.c-purple { color: var(--primary-purple); }
    .stat-val.c-pink { color: var(--primary-pink); }
    .stat-val.c-green { color: var(--primary-green); }

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

    /* 通用Section布局 */
    .page-section {
      padding: 80px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
      position: relative;
    }

    .section-alt {
      background-color: var(--bg-card-alt);
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(124, 58, 237, 0.08);
      color: var(--primary-purple);
      border-radius: var(--radius-full);
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }

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

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .about-text-card {
      background: #ffffff;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .about-text-card h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

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

    .about-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 24px;
    }

    .about-feature-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .check-icon {
      width: 18px;
      height: 18px;
      background: rgba(5, 150, 105, 0.12);
      color: var(--primary-green);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
    }

    .media-card-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-md);
    }

    .media-card-wrap img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      display: block;
    }

    /* 模型矩阵与支持生态 */
    .models-tags-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      padding: 8px 16px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 600;
      border: 1px solid var(--border-color);
      background: var(--bg-card-alt);
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: var(--rainbow-gradient);
      color: #ffffff;
      border-color: transparent;
      transform: translateY(-2px);
    }

    /* 核心服务能力卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--rainbow-gradient);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-rainbow);
      border-color: rgba(124, 58, 237, 0.3);
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: var(--rainbow-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
    }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 一站式制作场景特色展区 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease;
    }

    .scenario-item:hover {
      transform: translateY(-3px);
      border-color: var(--primary-purple);
    }

    .scenario-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .scenario-badge {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: rgba(37, 99, 235, 0.08);
      color: var(--primary-blue);
      border-radius: 4px;
    }

    .scenario-detail {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 标准制作流程 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .step-number {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--rainbow-gradient);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 4px 10px rgba(124, 58, 237, 0.2);
    }

    .step-title {
      font-size: 1.15rem;
      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-banner {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      box-shadow: var(--shadow-sm);
    }

    .score-left h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .stars-render {
      color: #f59e0b;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

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

    .score-max {
      font-size: 1.2rem;
      color: var(--text-light);
      font-weight: 600;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

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

    .compare-table th {
      background: var(--bg-card-alt);
      font-weight: 700;
      color: var(--text-main);
    }

    .highlight-col {
      background: rgba(124, 58, 237, 0.03);
      font-weight: 600;
      color: var(--primary-purple);
    }

    /* 案例中心展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      background: var(--bg-card-alt);
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

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

    .case-body {
      padding: 20px;
    }

    .case-body h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

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

    /* 客户评价板块 */
    .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-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: italic;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar-initial {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-soft);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-purple);
      font-size: 1.1rem;
    }

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

    .reviewer-meta span {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

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

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

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

    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
      color: var(--primary-purple);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 表单与联系模块 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-panel h3 {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .contact-row {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
      font-size: 0.96rem;
      color: var(--text-muted);
    }

    .contact-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--rainbow-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-purple);
      font-weight: 700;
    }

    .qr-container {
      margin-top: 24px;
      padding: 16px;
      background: var(--bg-card-alt);
      border-radius: var(--radius-md);
      text-align: center;
      display: inline-block;
      border: 1px solid var(--border-color);
    }

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

    .qr-container p {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease;
      background-color: #ffffff;
    }

    .form-control:focus {
      border-color: var(--primary-purple);
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
    }

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

    /* 行业资讯与文章动态 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 24px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: all 0.2s ease;
    }

    .article-item-card:hover {
      border-color: var(--primary-blue);
      transform: translateY(-2px);
    }

    .article-item-card a {
      text-decoration: none;
      color: var(--text-main);
      font-size: 1rem;
      font-weight: 700;
      line-height: 1.4;
      display: block;
      margin-bottom: 8px;
    }

    .article-item-card a:hover {
      color: var(--primary-purple);
    }

    .article-tag {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* 友情链接与页脚 */
    .links-section {
      background: #ffffff;
      padding: 30px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .links-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .links-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-right: 8px;
    }

    .links-wrapper a {
      font-size: 0.88rem;
      color: var(--text-muted);
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .links-wrapper a:hover {
      color: var(--primary-purple);
    }

    .site-footer {
      background: #ffffff;
      color: var(--text-muted);
      padding: 40px 0 30px;
      border-top: 1px solid var(--border-color);
    }

    .footer-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 0.9rem;
    }

    .footer-links {
      display: flex;
      gap: 20px;
    }

    .footer-links a {
      color: var(--text-muted);
      text-decoration: none;
    }

    .footer-links a:hover {
      color: var(--primary-purple);
    }

    /* 浮动客服挂件 */
    .floating-kefu {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .float-btn:hover {
      background: var(--rainbow-gradient);
      color: #ffffff;
      border-color: transparent;
      transform: scale(1.08);
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .services-grid, .case-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenarios-grid, .workflow-steps, .hero-stat-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-item:not(:last-child)::after {
        display: none;
      }
      .about-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .services-grid, .case-grid, .reviews-grid, .articles-grid {
        grid-template-columns: 1fr;
      }
      .scenarios-grid, .workflow-steps, .hero-stat-bar {
        grid-template-columns: 1fr;
      }
      .footer-content {
        flex-direction: column;
        text-align: center;
      }
    }