/* roulang page: index */
:root {
      --bg-dark: #0a0d14;
      --bg-card: #121622;
      --bg-card-alt: #161b2a;
      --neon-cyan: #00DFD8;
      --neon-purple: #7928CA;
      --neon-green: #00F5A0;
      --text-main: #f0f4fc;
      --text-sub: #94a3b8;
      --border-glow: rgba(0, 223, 216, 0.18);
      --grad-primary: linear-gradient(135deg, #7928CA 0%, #00DFD8 100%);
      --grad-badge: linear-gradient(90deg, rgba(121,40,202,0.2) 0%, rgba(0,223,216,0.2) 100%);
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    a:hover { color: var(--neon-cyan); }
    img { max-width: 100%; height: auto; display: block; }
    .top-trust-bar {
      background: #06080d;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      font-size: 13px;
      color: var(--text-sub);
      padding: 6px 0;
    }
    .neon-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(10, 13, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-glow);
    }
    .header-nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
    .logo-brand { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; background: var(--grad-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
    .nav-links { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; font-size: 15px; font-weight: 500; }
    .nav-links a { color: #cbd5e1; position: relative; padding: 6px 0; }
    .nav-links a:hover, .nav-links a.active { color: #fff; }
    .nav-links a.active::after {
      content: ''; position: absolute; bottom: -2px; left: 0; width: 100%; height: 2px;
      background: var(--neon-cyan); box-shadow: 0 0 8px var(--neon-cyan);
    }
    .btn-neon {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 10px 24px; border-radius: 999px; font-weight: 600; font-size: 15px;
      background: var(--grad-primary); color: #fff !important;
      border: 1px solid transparent; box-shadow: 0 0 16px rgba(0,223,216,0.3);
      cursor: pointer; transition: all 0.3s;
    }
    .btn-neon:hover { transform: translateY(-2px); box-shadow: 0 0 24px rgba(0,223,216,0.6); }
    .btn-outline {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 10px 24px; border-radius: 999px; font-weight: 600; font-size: 15px;
      background: rgba(255,255,255,0.05); color: #fff;
      border: 1px solid var(--border-glow); cursor: pointer; transition: all 0.3s;
    }
    .btn-outline:hover { background: rgba(0,223,216,0.1); border-color: var(--neon-cyan); }
    .site-section { padding: 80px 0; position: relative; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .section-alt { background: #0d111b; }
    .section-title { font-size: 32px; font-weight: 700; margin-bottom: 12px; color: #fff; }
    .section-desc { color: var(--text-sub); font-size: 16px; margin-bottom: 40px; max-width: 780px; }
    .badge-pill {
      display: inline-block; padding: 4px 14px; border-radius: 999px;
      font-size: 13px; font-weight: 600; color: var(--neon-cyan);
      background: var(--grad-badge); border: 1px solid var(--border-glow); margin-bottom: 14px;
    }
    .glow-card {
      background: var(--bg-card); border-radius: 20px;
      border: 1px solid var(--border-glow); padding: 32px 28px;
      transition: all 0.35s cubic-bezier(0.165, 0.84, 0.44, 1);
      position: relative; overflow: hidden; height: 100%;
    }
    .glow-card:hover { transform: translateY(-6px); border-color: var(--neon-cyan); box-shadow: 0 10px 30px rgba(0,223,216,0.2); }
    .metric-badge {
      display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px;
      border-radius: 6px; font-size: 12px; font-weight: 600;
      background: rgba(0,245,160,0.12); color: var(--neon-green); border: 1px solid rgba(0,245,160,0.3);
    }
    .hero-banner {
      min-height: 580px; padding: 70px 0;
      background: radial-gradient(circle at 80% 20%, rgba(121,40,202,0.22) 0%, transparent 50%),
                  radial-gradient(circle at 20% 80%, rgba(0,223,216,0.18) 0%, transparent 45%),
                  url('/assets/images/7bde1bc1a94eff95.webp') center/cover no-repeat;
      display: flex; align-items: center; position: relative;
    }
    .hero-banner::before {
      content:''; position: absolute; inset: 0; background: rgba(10, 13, 20, 0.88); z-index: 1;
    }
    .hero-content { position: relative; z-index: 2; }
    .hero-title { font-size: 44px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; }
    .hero-p { font-size: 17px; color: #cbd5e1; margin-bottom: 30px; line-height: 1.8; }
    .step-box { position: relative; text-align: left; }
    .step-num { font-size: 32px; font-weight: 900; color: var(--neon-cyan); margin-bottom: 8px; opacity: 0.9; }
    .faq-panel { background: var(--bg-card); border: 1px solid var(--border-glow); border-radius: 12px; margin-bottom: 14px; overflow: hidden; }
    .faq-q { padding: 18px 24px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
    .faq-a { padding: 0 24px 20px 24px; color: var(--text-sub); font-size: 15px; border-top: 1px solid rgba(255,255,255,0.05); }
    .footer-site { background: #05070a; padding: 60px 0 30px 0; border-top: 1px solid rgba(255,255,255,0.08); font-size: 14px; color: var(--text-sub); }
    @media(max-width: 768px) {
      .header-nav { height: auto; padding: 14px 0; flex-direction: column; gap: 12px; }
      .nav-links { flex-wrap: wrap; justify-content: center; gap: 14px; }
      .hero-title { font-size: 30px; }
      .site-section { padding: 50px 0; }
    }