/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --deep-space: #0F172A;
      --star-orange: #FF6B35;
      --aurora-cyan: #00F0FF;
      --bg-dark: #0B0410;
      --card-bg: rgba(20, 10, 40, 0.7);
      --text-body: #E2E8F0;
      --text-weak: #94A3B8;
      --border-glow: rgba(0, 240, 255, 0.15);
      --shadow-cyan: 0 8px 32px rgba(0, 240, 255, 0.1);
      --radius-card: 16px;
      --radius-btn: 9999px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-body);
      line-height: 1.75;
      margin: 0;
      overflow-x: hidden;
    }

    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 星空背景效果 */
    .starfield-bg {
      background: radial-gradient(ellipse at 30% 20%, #1A0A2E 0%, #0B0410 70%);
      position: relative;
    }
    .starfield-bg::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: radial-gradient(2px 2px at 15px 50px, rgba(255,255,255,0.4), transparent),
                        radial-gradient(2px 2px at 75px 120px, rgba(255,255,255,0.3), transparent),
                        radial-gradient(2px 2px at 200px 30px, rgba(0,240,255,0.2), transparent),
                        radial-gradient(2px 2px at 350px 200px, rgba(255,107,53,0.25), transparent),
                        radial-gradient(2px 2px at 500px 80px, #ffffff30, transparent),
                        radial-gradient(2px 2px at 40px 300px, #ffffff40, transparent),
                        radial-gradient(2px 2px at 600px 400px, rgba(0,240,255,0.3), transparent);
      background-size: 800px 600px;
      pointer-events: none;
    }

    /* 导航滚动实色 */
    .nav-solid {
      background: rgba(15, 23, 42, 0.9);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-transparent {
      background: transparent;
      border-bottom: 1px solid transparent;
      transition: all 0.3s ease;
    }

    /* 卡片悬浮 */
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.3s ease, border-color 0.3s;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 30px -12px rgba(0, 240, 255, 0.15);
      border-color: rgba(0, 240, 255, 0.35);
    }

    /* 按钮系统 */
    .btn-primary {
      background-color: var(--star-orange);
      color: white;
      font-weight: 600;
      padding: 0.75rem 1.75rem;
      border-radius: var(--radius-btn);
      box-shadow: 0 10px 20px -8px rgba(255, 107, 53, 0.35);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background-color: #ff7f4d;
      box-shadow: 0 15px 25px -10px rgba(255, 107, 53, 0.5);
      transform: translateY(-1px);
    }

    .btn-secondary {
      border: 1px solid rgba(0, 240, 255, 0.5);
      color: #00F0FF;
      background: transparent;
      font-weight: 500;
      padding: 0.75rem 1.75rem;
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      backdrop-filter: blur(4px);
    }
    .btn-secondary:hover {
      background: rgba(0, 240, 255, 0.12);
      border-color: #00F0FF;
      color: white;
    }

    /* 表单样式 */
    .input-field {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      padding: 0.75rem 1rem;
      color: white;
      outline: none;
      width: 100%;
      transition: border 0.2s, box-shadow 0.2s;
    }
    .input-field:focus {
      border-color: #00F0FF;
      box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
    }

    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .faq-trigger {
      cursor: pointer;
      padding: 1.25rem 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      color: white;
      transition: color 0.2s;
    }
    .faq-trigger:hover {
      color: #00F0FF;
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: #94A3B8;
      padding-bottom: 0;
    }
    .faq-item.active .faq-content {
      max-height: 200px;
      padding-bottom: 1.25rem;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: #FF6B35;
    }
    .faq-icon {
      font-size: 1.5rem;
      transition: transform 0.3s, color 0.3s;
      color: #00F0FF;
    }

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
    }
    @media (max-width: 767px) {
      .mobile-menu.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 0;
        background: rgba(10, 5, 20, 0.97);
        backdrop-filter: blur(20px);
        z-index: 999;
        padding: 2rem;
        justify-content: center;
        align-items: center;
      }
      .mobile-menu a {
        font-size: 1.5rem;
        margin: 1rem 0;
      }
    }

    /* 计数动画预留 */
    .counter-digit {
      font-variant-numeric: tabular-nums;
    }