:root {
      --primary-color: #7c3aed;
      --primary-hover: #6d28d9;
      --primary-gradient: linear-gradient(135deg, #7c3aed 0%, #9333ea 50%, #c026d3 100%);
      --accent-glow: rgba(124, 58, 237, 0.12);
      --bg-page: #faf8ff;
      --bg-card: #ffffff;
      --text-main: #1e1b4b;
      --text-muted: #4b5563;
      --border-subtle: #ede9fe;
      --border-focus: #c4b5fd;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 12px rgba(124, 58, 237, 0.05);
      --shadow-hover: 0 12px 30px rgba(124, 58, 237, 0.14);
      --transition: all 0.28s ease-in-out;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .section-wrap {
      padding: 72px 0;
      position: relative;
    }

    .section-title-box {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 30px;
      background: rgba(124, 58, 237, 0.08);
      color: var(--primary-color);
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 12px;
      border: 1px solid var(--border-subtle);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 2px 10px rgba(124, 58, 237, 0.04);
    }

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

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

    .brand-logo-box {
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      border-radius: 8px;
    }

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

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

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

    /* 必须显式将 gap 设置为 0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: #374151;
      border-radius: 6px;
    }

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

    .header-action {
      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-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.5);
      transform: translateY(-2px);
    }

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

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

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

    /* Hero 首屏 - 严禁出现图片，使用纯CSS与几何卡片科技感 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(192, 38, 211, 0.12) 0%, rgba(124, 58, 237, 0.08) 35%, rgba(250, 248, 255, 1) 70%), #faf8ff;
      padding: 80px 0 60px;
      position: relative;
      border-bottom: 1px solid var(--border-subtle);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-text-content {
      position: relative;
      z-index: 2;
    }

    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-focus);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 2.6rem;
      font-weight: 800;
      line-height: 1.25;
      color: #1e1b4b;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

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

    .hero-desc {
      font-size: 1.1rem;
      color: #4b5563;
      margin-bottom: 28px;
      line-height: 1.65;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 36px;
    }

    .hero-meta-points {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 0.9rem;
      color: #4b5563;
    }

    .hero-point-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-weight: 500;
    }

    .hero-point-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary-color);
    }

    /* Hero 无图交互科技卡片区 */
    .hero-visual-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: 0 16px 36px rgba(124, 58, 237, 0.08);
      position: relative;
    }

    .visual-top-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border-subtle);
    }

    .status-light-group {
      display: flex;
      gap: 6px;
    }

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

    .light-red { background: #f87171; }
    .light-yellow { background: #fbbf24; }
    .light-green { background: #34d399; }

    .engine-status-badge {
      font-size: 0.75rem;
      color: #059669;
      background: #ecfdf5;
      padding: 4px 10px;
      border-radius: 12px;
      font-weight: 600;
    }

    .visual-metrics-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 20px;
    }

    .metric-card {
      background: #fcfaff;
      border: 1px solid var(--border-subtle);
      padding: 16px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }

    .metric-card:hover {
      border-color: var(--border-focus);
      background: #f7f2ff;
    }

    .metric-value {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary-color);
      margin-bottom: 4px;
    }

    .metric-title {
      font-size: 0.825rem;
      color: #6b7280;
    }

    .visual-pipeline-box {
      background: #fdfcff;
      border: 1px dashed var(--border-focus);
      border-radius: var(--radius-md);
      padding: 16px;
    }

    .pipeline-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid #f3f0ff;
    }

    .pipeline-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .pipeline-tag {
      font-weight: 600;
      color: var(--primary-color);
    }

    /* 聚合模型阵列 */
    .models-marquee-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-subtle);
      padding: 28px 0;
    }

    .marquee-label {
      text-align: center;
      font-size: 0.85rem;
      font-weight: 600;
      color: #6b7280;
      text-transform: uppercase;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }

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

    .model-chip {
      background: #f8f6fc;
      border: 1px solid var(--border-subtle);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.825rem;
      font-weight: 600;
      color: #374151;
      transition: var(--transition);
    }

    .model-chip:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
      transform: translateY(-2px);
    }

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

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

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

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

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

    .service-icon-box {
      width: 50px;
      height: 50px;
      border-radius: 12px;
      background: var(--accent-glow);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

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

    .service-card-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-card-tag {
      margin-top: 14px;
      font-size: 0.775rem;
      font-weight: 600;
      color: var(--primary-color);
      background: #fbf9ff;
      padding: 4px 10px;
      border-radius: 6px;
      align-self: flex-start;
      border: 1px solid var(--border-subtle);
    }

    /* 平台介绍图文展示 */
    .about-feature-box {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 28px;
    }

    .about-item-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .about-item-cell {
      display: flex;
      gap: 14px;
    }

    .about-item-num {
      width: 32px;
      height: 32px;
      background: var(--accent-glow);
      color: var(--primary-color);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }

    /* 标准服务流程步骤 */
    .process-step-box {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      padding: 20px 16px;
      border-radius: var(--radius-md);
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .process-step-num {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 8px;
    }

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

    .process-desc {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.45;
    }

    /* 对比评测 Matrix */
    .rating-highlight-banner {
      background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 100%);
      color: #ffffff;
      padding: 28px;
      border-radius: var(--radius-lg);
      margin-bottom: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-banner-left h3 {
      font-size: 1.4rem;
      margin-bottom: 6px;
    }

    .rating-stars {
      color: #facc15;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .rating-banner-score {
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 12px 24px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .rating-score-num {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1;
      color: #ffffff;
    }

    .rating-score-max {
      font-size: 0.85rem;
      color: #e9d5ff;
    }

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

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.925rem;
    }

    .eval-table th {
      background: #fbf9ff;
      padding: 16px 20px;
      font-weight: 700;
      color: var(--text-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f3f0ff;
      color: #374151;
    }

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

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

    /* 真实素材图展示区 */
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

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

    .media-img-container {
      width: 100%;
      background: #f8f6fc;
      overflow: hidden;
    }

    .media-img-container img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .media-info-box {
      padding: 18px;
      flex-grow: 1;
    }

    .media-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .media-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 宣传横幅集合展示 */
    .banner-display-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .banner-img-cell {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }

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

    /* 客户评价板块 */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .review-avatar-text {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .user-name-box h4 {
      font-size: 1rem;
      color: var(--text-main);
    }

    .user-name-box span {
      font-size: 0.8rem;
      color: #6b7280;
    }

    .review-quote {
      font-size: 0.9rem;
      color: #374151;
      line-height: 1.6;
      flex-grow: 1;
    }

    .review-rating-stars {
      color: #f59e0b;
      font-size: 0.85rem;
      margin-top: 12px;
    }

    /* 需求表单模块 */
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-focus);
      border-radius: var(--radius-lg);
      padding: 40px;
      max-width: 860px;
      margin: 0 auto;
      box-shadow: var(--shadow-hover);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group-full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      background: #faf8ff;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--primary-color);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
    }

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

    /* FAQ 手风琴 */
    .faq-grid {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-accordion-item {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }

    .faq-question:hover {
      color: var(--primary-color);
      background: #faf7ff;
    }

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

    .faq-accordion-item.active .faq-icon-arrow {
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fdfcff;
      border-top: 1px solid transparent;
    }

    .faq-accordion-item.active .faq-answer {
      max-height: 300px;
      border-top: 1px solid #f3f0ff;
    }

    .faq-answer-inner {
      padding: 16px 24px 20px;
      font-size: 0.925rem;
      color: #4b5563;
      line-height: 1.65;
    }

    /* 文章与资讯 */
    .articles-container {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 18px;
    }

    .article-link-item {
      padding: 12px 16px;
      background: #fbf9ff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-subtle);
      font-size: 0.925rem;
      color: #374151;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .article-link-item:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background: #f4eeff;
    }

    /* 联络信息与客服 */
    .contact-box-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 18px 22px;
      display: flex;
      align-items: center;
      gap: 16px;
      box-shadow: var(--shadow-sm);
    }

    .contact-card-icon {
      width: 44px;
      height: 44px;
      background: var(--accent-glow);
      color: var(--primary-color);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }

    .contact-card-title {
      font-size: 0.825rem;
      color: #6b7280;
    }

    .contact-card-value {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .contact-qr-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-focus);
      border-radius: var(--radius-lg);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-hover);
    }

    .qr-img-box {
      width: 170px;
      height: 170px;
      margin: 0 auto 12px;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #f9f9f9;
    }

    .qr-img-box img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .qr-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--primary-color);
    }

    /* 友情链接与页脚 */
    .footer-section {
      background: #110d24;
      color: #d1d5db;
      padding: 56px 0 28px;
      border-top: 1px solid #231c44;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.4fr 1.6fr;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid #231c44;
      margin-bottom: 28px;
    }

    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .footer-brand-desc {
      font-size: 0.9rem;
      color: #9ca3af;
      line-height: 1.6;
      max-width: 440px;
    }

    .footer-links-group h4 {
      font-size: 1rem;
      color: #ffffff;
      margin-bottom: 14px;
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-box a {
      background: #1d173b;
      color: #e5e7eb;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.85rem;
      border: 1px solid #2b2354;
    }

    .friend-links-box a:hover {
      color: #ffffff;
      background: var(--primary-color);
      border-color: var(--primary-color);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.85rem;
      color: #9ca3af;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-bottom a {
      color: #9ca3af;
    }

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

    /* 浮动组件 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary-color);
      border: 1px solid var(--border-focus);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      cursor: pointer;
      transition: var(--transition);
      font-size: 1rem;
      font-weight: 700;
    }

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

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-step-box {
        grid-template-columns: repeat(3, 1fr);
      }
      .media-card-grid,
      .banner-display-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        height: 64px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-center {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
      }
      .nav-center.open {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 20px;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 10px 0;
        width: 100%;
      }
      .hero-title {
        font-size: 1.95rem;
      }
      .grid-3, .grid-4, .grid-2 {
        grid-template-columns: 1fr;
      }
      .about-item-list {
        grid-template-columns: 1fr;
      }
      .process-step-box {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-card-grid,
      .banner-display-grid {
        grid-template-columns: 1fr;
      }
      .contact-box-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .form-wrapper {
        padding: 24px;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .article-links-list {
        grid-template-columns: 1fr;
      }
    }