:root {
        --primary: #4a6cf7;
        --secondary: #00f7ff;
        --accent: #ff6b9e;
        --dark: #0a0a1a;
        --light: #f0f5ff;
        --card-bg: rgba(255, 255, 255, 0.08);
        --card-border: rgba(255, 255, 255, 0.15);
        --transition: all 0.3s ease;
        --shadow: 0 10px 30px rgba(0, 247, 255, 0.1);
      }

      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        -webkit-tap-highlight-color: transparent;
      }

      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          Helvetica, Arial, sans-serif;
        background: var(--dark);
        color: var(--light);
        line-height: 1.5;
        overflow-x: hidden;
        background: radial-gradient(
          circle at top,
          #1a1a3e 0%,
          var(--dark) 100%
        );
      }

      .container {
        width: 95%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 15px;
      }

      /* 导航栏优化 */
      .navbar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        padding: 15px 0;
        background: rgba(10, 10, 26, 0.98);
        z-index: 1000;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        transition: var(--transition);
      }

      .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
      }

      .brand {
        display: flex;
        align-items: center;
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--light);
        text-decoration: none;
        transition: var(--transition);
      }

      .brand:hover .brand-icon {
        transform: rotate(10deg) scale(1.05);
      }

      .brand-icon {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 12px;
        color: white;
        font-size: 1.2rem;
        box-shadow: 0 0 15px rgba(74, 108, 247, 0.5);
        transition: var(--transition);
      }

      /* 英雄区域优化 */
      .hero {
        padding: 120px 0 80px;
        text-align: center;
      }

      .hero h1 {
        font-size: 2.5rem;
        font-weight: 800;
        margin-bottom: 20px;
        background: linear-gradient(to right, var(--light), var(--secondary));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        text-shadow: 0 0 10px rgba(0, 247, 255, 0.3);
      }

      .hero p {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 30px;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
      }

      .btn {
        display: inline-block;
        padding: 14px 30px;
        border-radius: 50px;
        font-weight: 600;
        text-decoration: none;
        transition: var(--transition);
        margin: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        box-shadow: var(--shadow);
      }

      .btn-primary {
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: white;
      }

      .btn-secondary {
        background: transparent;
        color: white;
        border: 1px solid rgba(255, 255, 255, 0.3);
      }

      .btn-primary:hover {
        transform: translateY(-3px);
        box-shadow: 0 15px 35px rgba(74, 108, 247, 0.4);
      }

      .btn-secondary:hover {
        border-color: var(--secondary);
        color: var(--secondary);
      }

      .stats {
        display: flex;
        justify-content: space-around;
        margin: 40px 0;
        flex-wrap: wrap;
        gap: 20px;
      }

      .stat-item {
        text-align: center;
        padding: 20px;
        background: var(--card-bg);
        border-radius: 12px;
        min-width: 120px;
        transition: var(--transition);
      }

      .stat-item:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow);
      }

      .stat-number {
        font-size: 1.8rem;
        font-weight: 800;
        color: var(--secondary);
        margin-bottom: 8px;
        display: block;
      }

      .stat-label {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.7);
      }

      /* 特性区域优化 */
      .features {
        padding: 80px 0;
      }

      .section-title {
        text-align: center;
        margin-bottom: 50px;
      }

      .section-title h2 {
        font-size: 2rem;
        font-weight: 700;
        margin-bottom: 15px;
        color: white;
        position: relative;
        display: inline-block;
      }

      .section-title h2::after {
        content: "";
        position: absolute;
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 3px;
        background: linear-gradient(to right, var(--primary), var(--accent));
        border-radius: 3px;
      }

      .section-title p {
        font-size: 1rem;
        color: rgba(255, 255, 255, 0.7);
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
      }

      .feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
      }

      .feature-card {
        background: var(--card-bg);
        border-radius: 18px;
        padding: 30px;
        margin-bottom: 15px;
        border: 1px solid var(--card-border);
        transition: var(--transition);
        position: relative;
        overflow: hidden;
      }

      .feature-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 5px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
      }

      .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow);
      }

      .feature-icon {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
        background: linear-gradient(
          135deg,
          rgba(74, 108, 247, 0.2),
          rgba(0, 247, 255, 0.2)
        );
        color: var(--secondary);
        font-size: 1.4rem;
        box-shadow: 0 0 15px rgba(0, 247, 255, 0.1);
        transition: var(--transition);
      }

      .feature-card:hover .feature-icon {
        transform: rotate(15deg) scale(1.1);
      }

      .feature-card h3 {
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 12px;
        color: white;
      }

      .feature-card p {
        font-size: 0.95rem;
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 18px;
      }

      .feature-link {
        color: var(--secondary);
        text-decoration: none;
        font-size: 0.95rem;
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 5px;
      }

      .feature-link i {
        transition: var(--transition);
      }

      .feature-card:hover .feature-link i {
        transform: translateX(5px);
      }

      /* 底部区域优化 */
      footer {
        background: linear-gradient(
          180deg,
          rgba(0, 0, 0, 0.3) 0%,
          var(--dark) 100%
        );
        padding: 60px 0 30px;
        text-align: center;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
      }

      .footer-top {
        margin-bottom: 40px;
      }

      .footer-logo {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
      }

      .footer-logo .brand-icon {
        margin-right: 10px;
      }

      .footer-desc {
        max-width: 400px;
        margin: 0 auto 30px;
        color: rgba(255, 255, 255, 0.7);
        font-size: 0.95rem;
      }

      .footer-links {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 30px;
        gap: 20px;
      }

      .footer-link {
        color: rgba(255, 255, 255, 0.7);
        text-decoration: none;
        font-size: 0.9rem;
        transition: var(--transition);
      }

      .footer-link:hover {
        color: var(--secondary);
      }

      .social-icons {
        margin-bottom: 30px;
      }

      .social-icon {
        color: white;
        margin: 0 15px;
        font-size: 1.4rem;
        transition: var(--transition);
      }

      .social-icon:hover {
        color: var(--secondary);
        transform: translateY(-3px);
      }

      .copyright {
        color: rgba(255, 255, 255, 0.5);
        font-size: 0.85rem;
        margin-top: 20px;
      }