:root {
      --primary-color: #6b21a8;
      --primary-light: #9333ea;
      --primary-glow: #c084fc;
      --accent-magenta: #d946ef;
      --accent-cyan: #06b6d4;
      --bg-light: #fbf9ff;
      --bg-card: #ffffff;
      --bg-alt: #f5f0fb;
      --text-dark: #1e1b4b;
      --text-muted: #4b5563;
      --text-light: #6b7280;
      --border-color: #e9d5ff;
      --container-max: 1200px;
      --shadow-sm: 0 2px 8px rgba(107, 33, 168, 0.05);
      --shadow-md: 0 8px 24px rgba(107, 33, 168, 0.08);
      --shadow-lg: 0 16px 36px rgba(107, 33, 168, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      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-light);
      color: var(--text-dark);
      line-height: 1.65;
      background-image: radial-gradient(circle at 10% 20%, rgba(147, 51, 234, 0.04) 0%, transparent 40%), radial-gradient(circle at 90% 80%, rgba(217, 70, 239, 0.04) 0%, transparent 40%);
      background-attachment: fixed;
    }

    a {
      color: var(--primary-color);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--accent-magenta);
    }

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

    /* 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-color);
      transition: all 0.3s ease;
    }

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

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

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

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

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-dark);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-color), var(--accent-magenta));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(107, 33, 168, 0.25);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
      color: #ffffff;
      box-shadow: 0 6px 18px rgba(107, 33, 168, 0.35);
      transform: translateY(-1px);
    }

    .btn-outline {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background-color: transparent;
    }

    .btn-outline:hover {
      background-color: var(--bg-alt);
      color: var(--primary-light);
    }

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

    /* 首屏 Hero 区域 (无图片) */
    .hero-section {
      padding: 70px 0 60px;
      background: linear-gradient(180deg, rgba(233, 213, 255, 0.45) 0%, rgba(251, 249, 255, 1) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 880px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      background-color: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary-color);
      margin-bottom: 20px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge span {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-magenta);
      margin-right: 8px;
      animation: pulseDot 1.8s infinite;
    }

    @keyframes pulseDot {
      0% { transform: scale(0.9); opacity: 0.7; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.9); opacity: 0.7; }
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

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

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease;
    }

    .hero-stat-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .stat-number {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-color);
      display: block;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 模块通用样式 */
    .section-padding {
      padding: 75px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 45px;
    }

    .section-subhead {
      font-size: 0.88rem;
      text-transform: uppercase;
      font-weight: 700;
      color: var(--primary-light);
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: block;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-summary {
      font-size: 0.98rem;
      color: var(--text-muted);
    }

    /* 网格与卡片通用 */
    .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: 28px;
    }

    .feature-card {
      background: var(--bg-card);
      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;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-glow);
    }

    .card-icon-tag {
      width: 44px;
      height: 44px;
      background: var(--bg-alt);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      color: var(--primary-color);
      margin-bottom: 16px;
      font-weight: bold;
    }

    .card-title {
      font-size: 1.18rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }

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

    /* 平台支持标签云 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 25px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-dark);
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
      transform: scale(1.03);
    }

    /* 图文混排专区 */
    .media-card-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

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

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

    .media-card-wrap:hover .img-container img {
      transform: scale(1.02);
    }

    .media-body {
      padding: 24px;
    }

    /* 对比表格 */
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-md);
      overflow-x: auto;
    }

    .compare-badge-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      padding-bottom: 18px;
      border-bottom: 1px dashed var(--border-color);
      flex-wrap: wrap;
      gap: 16px;
    }

    .score-highlight {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-color);
      background: var(--bg-alt);
      padding: 8px 20px;
      border-radius: 30px;
    }

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

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

    .compare-table th {
      background: var(--bg-alt);
      color: var(--text-dark);
      font-size: 0.98rem;
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background: rgba(245, 240, 251, 0.4);
    }

    .col-highlight {
      background: rgba(147, 51, 234, 0.04);
      font-weight: 600;
      color: var(--primary-color);
    }

    /* 步骤流程 */
    .steps-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }

    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary-color);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }

    /* 评论板块 */
    .testimonial-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;
    }

    .testimonial-text {
      font-size: 0.94rem;
      color: var(--text-dark);
      margin-bottom: 18px;
      font-style: italic;
    }

    .user-profile {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-alt);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
      border: 1px solid var(--border-color);
    }

    .user-info h4 {
      font-size: 0.95rem;
      color: var(--text-dark);
      font-weight: 700;
    }

    .user-info p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

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

    .faq-question {
      width: 100%;
      padding: 18px 24px;
      background: none;
      border: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      text-align: left;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary-color);
      transition: transform 0.3s ease;
      font-weight: bold;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      background-color: var(--bg-light);
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.7;
    }

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

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 22px;
      border-top: 1px solid var(--border-color);
    }

    /* 需求表单与联系区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-panel h3 {
      font-size: 1.45rem;
      color: var(--text-dark);
      margin-bottom: 16px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 18px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .contact-item strong {
      color: var(--text-dark);
      min-width: 80px;
    }

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

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

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-dark);
      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-dark);
      background-color: #faf8fd;
      outline: none;
      transition: all 0.25s ease;
      font-family: inherit;
    }

    .form-control:focus {
      background-color: #ffffff;
      border-color: var(--primary-light);
      box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.15);
    }

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

    /* 资讯与友情链接 */
    .article-link-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 20px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-dark);
      display: block;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .article-item-card:hover {
      background: var(--bg-alt);
      color: var(--primary-color);
      border-color: var(--primary-light);
      transform: translateX(3px);
    }

    .friend-links-box {
      margin-top: 30px;
      padding: 24px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }

    .friend-links-title {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-dark);
    }

    .friend-links-box a {
      font-size: 0.9rem;
      color: var(--text-muted);
      background: var(--bg-alt);
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid var(--border-color);
    }

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

    /* 页脚 */
    .site-footer {
      background-color: #170d28;
      color: #cbd5e1;
      padding: 50px 0 30px;
      border-top: 1px solid rgba(233, 213, 255, 0.2);
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 20px;
    }

    .footer-brand {
      color: #ffffff;
      font-size: 1.35rem;
      font-weight: 700;
    }

    .footer-links-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }

    .footer-links-row a {
      color: #cbd5e1;
      font-size: 0.92rem;
    }

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

    .footer-meta {
      font-size: 0.86rem;
      color: #94a3b8;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 20px;
      width: 100%;
    }

    /* 浮动操作按钮 */
    .float-dock {
      position: fixed;
      right: 24px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--primary-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      transform: scale(1.1);
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.1rem;
      }
      .grid-4, .hero-stats-grid, .steps-flow {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: left;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .header-cta-group .btn-outline {
        display: none;
      }
      .hero-title {
        font-size: 1.75rem;
      }
      .grid-2, .grid-3, .grid-4, .hero-stats-grid, .steps-flow {
        grid-template-columns: 1fr;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .contact-wrapper {
        padding: 24px;
      }
    }