/* 全局样式与变量 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --primary: #ff4d6d;
      --primary-dark: #c9183c;
      --bg-dark: #0b0e14;
      --bg-card: #151a22;
      --bg-card-hover: #1e2530;
      --text-light: #eaeef2;
      --text-muted: #9aa4b2;
      --border-subtle: #2a323f;
      --shadow-glow: 0 8px 30px rgba(255, 77, 109, 0.25);
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --transition: 0.25s ease;
    }

    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background: var(--bg-dark);
      color: var(--text-light);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
      padding: 0 16px 40px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    /* 主容器限制最大宽度并居中 */
    .container {
      max-width: 1200px;
      width: 100%;
      margin: 0 auto;
    }

    /* 导航栏 */
    .navbar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      padding: 18px 8px;
      border-bottom: 1px solid var(--border-subtle);
      margin-bottom: 24px;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      letter-spacing: 1px;
      background: linear-gradient(135deg, #ffffff 0%, #ffb3c1 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: inline-block;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      font-weight: 500;
      flex-wrap: wrap;
    }

    .nav-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 1rem;
      transition: color var(--transition);
      position: relative;
    }

    .nav-links a:hover {
      color: white;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--primary);
      transition: width var(--transition);
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    /* 主图模块 (Hero) */
    .hero {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 32px;
      background: linear-gradient(135deg, #1a1f2b 0%, #0f131a 100%);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      margin: 20px 0 40px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-glow);
    }

    .hero-content {
      flex: 1 1 300px;
    }

    .hero-content h1 {
      font-size: clamp(2rem, 7vw, 3.2rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 16px;
      background: linear-gradient(to right, #ffffff, #ffb8c9);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-content p {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 28px;
      max-width: 500px;
    }

    .hero-visual {
      flex: 1 1 280px;
      display: flex;
      justify-content: center;
      align-items: center;
      background: radial-gradient(circle at center, rgba(255,77,109,0.2) 0%, transparent 70%);
      border-radius: var(--radius-md);
      padding: 20px;
    }

    .hero-icon {
      width: 100%;
      max-width: 220px;
      aspect-ratio: 1/1;
      background: linear-gradient(145deg, #2a2f3a, #1b2029);
      border-radius: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 20px 35px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.08);
      font-size: 4.5rem;
      filter: drop-shadow(0 0 12px #ff4d6d88);
    }

    /* 下载按钮 */
    .btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin: 12px 0 8px;
    }

    .btn {

      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--primary);
      color: white;
      font-weight: 700;
      font-size: 1.15rem;
      padding: 14px 32px;
      border-radius: 60px;
      text-decoration: none;
      letter-spacing: 0.5px;
      transition: background var(--transition), transform 0.2s, box-shadow var(--transition);
      box-shadow: 0 10px 25px rgba(255, 77, 109, 0.45);
      border: none;
      cursor: pointer;
      white-space: nowrap;
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      box-shadow: none;
      font-weight: 600;
    }

    .btn:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 15px 30px rgba(255, 77, 109, 0.6);
    }

    .btn-outline:hover {
      background: rgba(255, 77, 109, 0.1);
      color: white;
    }

    /* 卡片模块 */
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin: 50px 0 24px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 24px;
      margin: 20px 0 30px;
    }

    .card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      border: 1px solid var(--border-subtle);
      transition: background var(--transition), transform 0.2s, border-color var(--transition);
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .card:hover {
      background: var(--bg-card-hover);
      border-color: #3f4a5a;
      transform: translateY(-5px);
    }

    .card-icon {
      font-size: 2.4rem;
      background: rgba(255, 77, 109, 0.15);
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 18px;
    }

    .card h3 {
      font-size: 1.4rem;
      font-weight: 650;
    }

    .card p {
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    /* 功能介绍列表 */
    .feature-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
      margin: 20px 0 30px;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-subtle);
    }

    .feature-item {
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: 1.05rem;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 14px;
    }

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

    .check-icon {
      color: var(--primary);
      font-weight: bold;
      font-size: 1.4rem;
      width: 28px;
      text-align: center;
    }

    /* 部署教程 & 常见问题 */
    .tutorial, .faq {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      margin: 20px 0;
      border: 1px solid var(--border-subtle);
    }

    .step {
      margin-bottom: 18px;
      padding-left: 12px;
      border-left: 3px solid var(--primary);
    }

    .step strong {
      display: block;
      font-size: 1.1rem;
      margin-bottom: 6px;
    }

    .faq-item {
      margin-bottom: 20px;
    }

    .faq-item h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: #ffb3c1;
    }

    hr {
      border-color: var(--border-subtle);
      margin: 32px 0 20px;
      opacity: 0.5;
    }

    /* 底部参数模块 */
    .footer-meta {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      color: var(--text-muted);
      font-size: 0.9rem;
      padding: 24px 8px 10px;
      border-top: 1px solid var(--border-subtle);
      margin-top: 50px;
    }

    .footer-meta span {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 响应式微调 */
    @media (max-width: 640px) {
      .navbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
      }
      .nav-links {
        gap: 18px;
      }
      .hero {
        flex-direction: column;
        padding: 28px 20px;
        text-align: center;
      }
      .hero-content p {
        max-width: 100%;
      }
      .btn-group {
        justify-content: center;
      }
    }