/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --deep-blue: #0A0E27;
      --cyan: #00F0FF;
      --orange: #FF6B35;
      --glass-bg: rgba(255, 255, 255, 0.03);
      --glass-border: rgba(0, 240, 255, 0.15);
      --glass-border-hover: rgba(0, 240, 255, 0.4);
      --text-primary: #E0E6F0;
      --text-secondary: #8899AA;
      --text-muted: #556677;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.5), 0 0 60px rgba(0, 240, 255, 0.2);
      --shadow-glow-hover: 0 0 40px rgba(0, 240, 255, 0.8), 0 0 80px rgba(0, 240, 255, 0.4);
      --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-mono: 'DIN Alternate', 'Roboto Mono', monospace;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      background-color: var(--deep-blue);
      color: var(--text-primary);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    /* 背景纹理 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800" opacity="0.04"><path d="M0 400 L1200 400" stroke="white" stroke-width="1" fill="none"/><circle cx="600" cy="400" r="300" stroke="white" stroke-width="1" fill="none"/><path d="M300 200 L900 600" stroke="white" stroke-width="1" fill="none"/><path d="M900 200 L300 600" stroke="white" stroke-width="1" fill="none"/></svg>');
      background-size: cover;
      pointer-events: none;
      z-index: 0;
    }

    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
      position: relative;
      z-index: 1;
    }

    /* 导航 */
    .glass-nav {
      background: rgba(10, 14, 39, 0.6);
      backdrop-filter: blur(30px);
      -webkit-backdrop-filter: blur(30px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.2);
      transition: all 0.3s ease;
    }
    .glass-nav.scrolled {
      background: rgba(10, 14, 39, 0.95);
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      border-bottom: 1px solid rgba(0, 240, 255, 0.25);
    }
    .nav-link {
      color: #B0C4DE;
      transition: color 0.2s;
      font-weight: 500;
    }
    .nav-link:hover {
      color: var(--cyan);
    }
    .nav-link.active {
      color: var(--cyan);
      border-bottom: 2px solid var(--cyan);
      padding-bottom: 4px;
    }
    .logo-text {
      background: linear-gradient(135deg, var(--cyan) 0%, #4af0ff 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 700;
      letter-spacing: 1px;
    }

    /* 发光按钮 */
    .btn-glow {
      background: var(--cyan);
      color: var(--deep-blue);
      font-weight: 600;
      border-radius: 40px;
      padding: 14px 32px;
      box-shadow: var(--shadow-glow);
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      letter-spacing: 0.5px;
    }
    .btn-glow:hover {
      box-shadow: var(--shadow-glow-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--cyan);
      color: var(--cyan);
      border-radius: 40px;
      padding: 14px 32px;
      font-weight: 600;
      transition: all 0.3s ease;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      background: rgba(0, 240, 255, 0.1);
      border-color: var(--cyan);
      color: var(--cyan);
      box-shadow: 0 0 15px rgba(0,240,255,0.3);
    }

    /* 玻璃卡片 */
    .glass-card {
      background: rgba(255, 255, 255, 0.03);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: 0 0 25px rgba(0, 240, 255, 0.2);
      transform: translateY(-4px);
    }
    .glass-card-sm {
      background: rgba(255,255,255,0.04);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(0,240,255,0.2);
      border-radius: var(--radius-md);
    }

    /* 数字字体 */
    .font-mono {
      font-family: var(--font-mono);
      font-weight: 700;
    }

    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(0,240,255,0.15);
    }
    .faq-question {
      cursor: pointer;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 500;
      color: #E0E6F0;
      transition: color 0.2s;
    }
    .faq-question:hover {
      color: var(--cyan);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: #8899AA;
      background: rgba(255,255,255,0.02);
      border-radius: 8px;
      padding: 0 16px;
      margin-bottom: 8px;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding: 16px;
    }
    .faq-icon {
      color: var(--cyan);
      transition: transform 0.3s;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }

    /* 横向滚动卡片 */
    .scroll-container {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 20px;
      scrollbar-width: thin;
      scrollbar-color: var(--cyan) rgba(0,0,0,0.2);
    }
    .scroll-container::-webkit-scrollbar {
      height: 6px;
    }
    .scroll-container::-webkit-scrollbar-thumb {
      background: var(--cyan);
      border-radius: 10px;
    }

    /* 动态粒子背景 */
    #particles-canvas {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 0;
    }

    @media (max-width: 768px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      h1 {
        font-size: 36px !important;
        line-height: 1.3 !important;
      }
      h2 {
        font-size: 28px !important;
      }
      .glass-card {
        padding: 24px !important;
      }
    }