/* roulang page: index */
:root {
      --deep-bg: #1A0A2E;
      --card-bg: #2D1B4E;
      --gold: #D4AF37;
      --rose: #FF2D55;
      --text-soft: rgba(255,255,255,0.85);
      --text-dim: rgba(255,255,255,0.6);
      --border-gold-dim: rgba(212,175,55,0.2);
      --radius-card: 16px;
      --radius-btn: 50px;
      --shadow-gold: 0 20px 40px rgba(212,175,55,0.15);
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
      background-color: var(--deep-bg);
      color: #ffffff;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航 PC */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(26, 10, 46, 0.8);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(212,175,55,0.15);
      z-index: 50;
      transition: background 0.3s;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      background: linear-gradient(135deg, #D4AF37 0%, #FFD966 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: 2px;
      text-shadow: 0 0 12px rgba(212,175,55,0.4);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo i {
      background: none;
      -webkit-text-fill-color: #D4AF37;
      font-size: 2rem;
      text-shadow: 0 0 20px #D4AF37;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      color: rgba(255,255,255,0.8);
      text-decoration: none;
      font-weight: 500;
      transition: color 0.3s, text-shadow 0.3s;
      font-size: 1rem;
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: #D4AF37;
      text-shadow: 0 0 8px rgba(212,175,55,0.6);
    }
    .btn-gold {
      background: linear-gradient(135deg, #D4AF37 0%, #FF2D55 100%);
      border: none;
      color: white;
      padding: 10px 28px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      cursor: pointer;
      transition: all 0.25s;
      box-shadow: 0 4px 15px rgba(212,175,55,0.3);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      letter-spacing: 0.5px;
    }
    .btn-gold:hover {
      transform: scale(1.05);
      box-shadow: 0 0 25px rgba(255,45,85,0.5), 0 0 15px rgba(212,175,55,0.5);
    }
    .btn-outline-gold {
      background: transparent;
      border: 1.5px solid #D4AF37;
      color: #D4AF37;
      padding: 10px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      cursor: pointer;
      transition: all 0.25s;
      display: inline-flex;
      align-items: center;
    }
    .btn-outline-gold:hover {
      background: rgba(212,175,55,0.1);
      border-color: #FFD966;
      color: #FFD966;
    }
    /* 移动端底部导航 */
    .mobile-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(20, 8, 36, 0.95);
      backdrop-filter: blur(25px);
      border-top: 1px solid rgba(212,175,55,0.25);
      padding: 8px 0;
      z-index: 60;
      justify-content: space-around;
      align-items: center;
    }
    .mobile-nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      color: rgba(255,255,255,0.7);
      font-size: 0.7rem;
      gap: 4px;
      transition: 0.2s;
      text-decoration: none;
    }
    .mobile-nav-item i {
      font-size: 1.4rem;
    }
    .mobile-nav-item.active {
      color: #D4AF37;
    }
    .mobile-cta {
      background: #FF2D55;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 1.5rem;
      box-shadow: 0 0 25px #FF2D55;
      margin-top: -18px;
      border: 2px solid #D4AF37;
    }
    /* Hero 背景粒子效果仅装饰 */
    .hero-glow {
      background: radial-gradient(circle at 30% 40%, rgba(212,175,55,0.2) 0%, transparent 50%),
                  radial-gradient(circle at 80% 60%, rgba(255,45,85,0.25) 0%, transparent 55%);
    }
    .count-number {
      font-weight: 800;
      background: linear-gradient(180deg, #D4AF37 0%, #FFD966 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      font-size: 2.8rem;
    }
    .card-hover {
      background: #2D1B4E;
      border-radius: var(--radius-card);
      border: 1px solid var(--border-gold-dim);
      transition: all 0.3s ease;
    }
    .card-hover:hover {
      border-color: #D4AF37;
      transform: translateY(-4px);
      box-shadow: var(--shadow-gold);
    }
    .star-gold {
      color: #D4AF37;
    }
    .faq-item {
      border-bottom: 1px solid rgba(212,175,55,0.2);
      cursor: pointer;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
    }
    .footer-link {
      color: rgba(255,255,255,0.6);
      transition: 0.2s;
    }
    .footer-link:hover {
      color: #D4AF37;
    }
    @media (max-width: 768px) {
      .desktop-nav {
        display: none;
      }
      .mobile-nav {
        display: flex;
      }
      .navbar {
        display: none;
      }
      .container {
        padding: 0 20px;
      }
      h1 {
        font-size: 2.2rem !important;
      }
      .count-number {
        font-size: 2rem;
      }
    }
    @media (min-width: 769px) {
      .mobile-nav {
        display: none;
      }
    }