/* roulang page: index */
:root {
      --deep-sea:#0A1628;
      --deep-sea-light:#132744;
      --gold:#C9A96E;
      --gold-light:#E0C78A;
      --gold-glow:rgba(201,169,110,0.65);
      --card-bg:rgba(20,35,60,0.55);
      --card-border:rgba(201,169,110,0.2);
      --text-primary:#E0E2E8;
      --text-secondary:#B0B8C5;
      --text-muted:#8B95A5;
      --radius-card:16px;
      --radius-btn:50px;
      --shadow-card:0 12px 32px rgba(0,0,0,0.5);
      --transition-smooth:0.35s ease;
      --font-stack:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",sans-serif;
    }
    *{box-sizing:border-box;margin:0;padding:0;}
    body{
      font-family:var(--font-stack);
      background:radial-gradient(ellipse at 50% 0%, #132744 0%, #0A1628 75%);
      color:var(--text-primary);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    .container{max-width:1200px;margin:0 auto;padding:0 24px;}
    /* 导航 */
    .main-header{
      position:fixed;top:0;left:0;width:100%;z-index:100;
      background:rgba(10,22,40,0.88);
      backdrop-filter:blur(14px);
      border-bottom:1px solid rgba(201,169,110,0.18);
      height:72px;display:flex;align-items:center;
    }
    .nav-container{
      display:flex;justify-content:space-between;align-items:center;
      max-width:1280px;margin:0 auto;padding:0 32px;width:100%;
    }
    .logo{
      font-size:1.7rem;font-weight:700;color:var(--gold);
      letter-spacing:1px;white-space:nowrap;
      text-shadow:0 0 8px rgba(201,169,110,0.5);
    }
    .nav-links{display:flex;align-items:center;gap:32px;}
    .nav-links a{
      color:var(--text-secondary);font-weight:500;font-size:0.95rem;
      text-decoration:none;position:relative;transition:color 0.3s;
    }
    .nav-links a:hover,.nav-links a.active{color:var(--gold);}
    .nav-links a::after{
      content:'';position:absolute;bottom:-6px;left:0;width:0;height:2px;
      background:var(--gold);box-shadow:0 0 10px var(--gold-glow);
      transition:width 0.3s;
    }
    .nav-links a:hover::after,.nav-links a.active::after{width:100%;}
    .nav-cta{
      background:linear-gradient(135deg, #C9A96E 0%, #E0C78A 100%);
      color:#0A1628 !important;font-weight:700;padding:10px 26px;
      border-radius:var(--radius-btn);box-shadow:0 4px 20px var(--gold-glow);
      transition:all 0.3s;white-space:nowrap;
    }
    .nav-cta:hover{
      box-shadow:0 0 28px rgba(201,169,110,0.8);
      transform:scale(1.04);color:#0A1628 !important;
    }
    .hamburger{display:none;font-size:1.8rem;color:var(--gold);cursor:pointer;}
    @media(max-width:1024px){
      .nav-links{display:none;flex-direction:column;position:absolute;top:72px;left:0;
      width:100%;background:rgba(10,22,40,0.96);backdrop-filter:blur(20px);
      padding:24px;gap:20px;border-bottom:1px solid rgba(201,169,110,0.3);}
      .nav-links.show{display:flex;}
      .hamburger{display:block;}
    }
    /* Hero */
    .hero{
      min-height:90vh;display:flex;align-items:center;justify-content:center;
      background:linear-gradient(180deg, rgba(10,22,40,0.7) 0%, rgba(10,22,40,0.4) 100%),
      url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-blend-mode:overlay;
      text-align:center;padding:120px 24px 80px;
    }
    .hero-content{max-width:820px;}
    .hero h1{
      font-size:3.2rem;font-weight:700;color:var(--gold);
      letter-spacing:0.02em;text-shadow:0 0 18px rgba(201,169,110,0.5);
      margin-bottom:24px;line-height:1.3;
    }
    .hero-sub{
      font-size:1.25rem;color:var(--text-secondary);max-width:600px;
      margin:0 auto 36px;line-height:1.7;
    }
    .btn-gold{
      background:linear-gradient(135deg, #C9A96E 0%, #E0C78A 100%);
      color:#0A1628;font-weight:700;padding:16px 42px;border-radius:var(--radius-btn);
      font-size:1.1rem;text-decoration:none;display:inline-block;
      box-shadow:0 6px 24px var(--gold-glow);transition:all 0.35s;
      border:none;cursor:pointer;
    }
    .btn-gold:hover{box-shadow:0 0 32px rgba(201,169,110,0.8);transform:scale(1.05);color:#0A1628;}
    .scroll-hint{margin-top:28px;color:var(--text-muted);font-size:0.9rem;}
    /* 板块通用 */
    section{padding:100px 0;}
    .section-title{font-size:2.2rem;font-weight:600;color:#fff;margin-bottom:48px;text-align:center;}
    .grid-x.gap-24{gap:24px;}
    /* 玻璃卡片 */
    .glass-card{
      background:var(--card-bg);backdrop-filter:blur(20px);
      border:1px solid var(--card-border);border-radius:var(--radius-card);
      padding:32px;box-shadow:var(--shadow-card);transition:all var(--transition-smooth);
    }
    .glass-card:hover{border-color:rgba(201,169,110,0.5);transform:translateY(-6px);}
    .icon-circle{
      width:64px;height:64px;border-radius:50%;border:2px solid var(--gold);
      display:flex;align-items:center;justify-content:center;
      color:var(--gold);font-size:1.8rem;margin-bottom:20px;
    }
    /* 数据 */
    .stat-number{
      font-size:3.5rem;font-weight:700;color:var(--gold);
      text-shadow:0 0 16px var(--gold-glow);line-height:1.2;
    }
    /* FAQ */
    .faq-item{border-bottom:1px solid rgba(255,255,255,0.06);padding:20px 0;cursor:pointer;}
    .faq-question{font-size:1.4rem;font-weight:600;color:var(--text-primary);}
    .faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease;color:var(--text-secondary);}
    .faq-item.active .faq-answer{max-height:200px;padding-top:12px;}
    /* 页脚 */
    .footer{border-top:1px solid rgba(201,169,110,0.3);padding:48px 0 24px;}
    .footer a{color:var(--text-secondary);text-decoration:none;}
    .footer a:hover{color:var(--gold);}
    @media(max-width:768px){
      .hero h1{font-size:2.2rem;}
      .section-title{font-size:1.8rem;}
      .glass-card{padding:24px;}
      section{padding:60px 0;}
    }