/* roulang page: index */
:root {
      --bs-primary: #6C3CE1;
      --bs-body-bg: #0D0B1E;
      --bs-body-color: #E8E6F0;
      --bs-dark: #1A1040;
      --bs-border-color: rgba(255,255,255,0.08);
      --ballbet-deep: #1A1040;
      --ballbet-purple: #6C3CE1;
      --ballbet-gold: #F0B90B;
      --ballbet-gold-dark: #D4990A;
      --ballbet-bg: #0D0B1E;
      --ballbet-text: #E8E6F0;
      --ballbet-muted: #8B87A3;
      --ballbet-card-bg: rgba(255,255,255,0.04);
      --ballbet-card-border: rgba(255,255,255,0.08);
      --ballbet-radius-btn: 50px;
      --ballbet-radius-card: 16px;
      --ballbet-radius-img: 12px;
      --ballbet-shadow-card: 0 8px 32px rgba(0,0,0,0.4);
      --ballbet-shadow-btn: 0 4px 15px rgba(108,60,225,0.3);
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
      --font-inter: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-inter);
      background-color: var(--ballbet-bg);
      color: var(--ballbet-text);
      line-height: 1.7;
      letter-spacing: 0.01em;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-family: var(--font-inter);
      letter-spacing: -0.02em;
      color: #FFFFFF;
    }
    a {
      color: #E8E6F0;
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    a:hover {
      color: var(--ballbet-purple);
    }
    img {
      max-width: 100%;
      height: auto;
    }
    .container {
      max-width: 1200px;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* 按钮覆盖 */
    .btn {
      font-weight: 600;
      border-radius: var(--ballbet-radius-btn);
      padding: 14px 36px;
      transition: var(--transition-smooth);
      text-transform: none;
      letter-spacing: 0.01em;
      font-size: 16px;
      border: none;
      position: relative;
      z-index: 1;
    }
    .btn-primary {
      background: linear-gradient(135deg, #1A1040 0%, #6C3CE1 100%);
      color: white;
      box-shadow: 0 0 20px rgba(108,60,225,0.5);
      border: none;
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #2B1A5E 0%, #7D4DE8 100%);
      box-shadow: 0 0 35px rgba(240,185,11,0.6);
      color: white;
      transform: translateY(-2px);
    }
    .btn-outline-light {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.25);
      color: white;
    }
    .btn-outline-light:hover {
      background: rgba(108,60,225,0.1);
      border-color: var(--ballbet-purple);
      color: white;
    }
    .btn-gold {
      background: linear-gradient(180deg, #F0B90B 0%, #D4990A 100%);
      color: #1A1040;
      font-weight: 700;
      box-shadow: 0 0 25px rgba(240,185,11,0.5);
    }
    .btn-gold:hover {
      box-shadow: 0 0 40px rgba(240,185,11,0.8);
      transform: scale(1.03);
      color: #1A1040;
    }
    /* 导航 */
    .navbar {
      background: rgba(13,11,30,0.85);
      backdrop-filter: blur(15px);
      -webkit-backdrop-filter: blur(15px);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      padding: 12px 0;
      transition: var(--transition-smooth);
    }
    .navbar-brand {
      font-weight: 800;
      font-size: 28px;
      letter-spacing: -0.03em;
      background: linear-gradient(180deg, #FFFFFF 0%, #F0B90B 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .navbar-brand small {
      font-size: 14px;
      font-weight: 400;
      background: none;
      -webkit-text-fill-color: #8B87A3;
      margin-left: 8px;
    }
    .nav-link {
      color: #E8E6F0 !important;
      font-weight: 500;
      margin: 0 8px;
      transition: var(--transition-smooth);
    }
    .nav-link:hover, .nav-link.active {
      color: #F0B90B !important;
    }
    .badge-status {
      background: #F0B90B;
      color: #1A1040;
      border-radius: 20px;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 600;
    }
    .navbar-toggler {
      border-color: rgba(255,255,255,0.2);
    }
    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    /* 区块间距 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
    }
    /* Hero */
    .hero-section {
      background: radial-gradient(circle at 30% 40%, rgba(108,60,225,0.25) 0%, transparent 60%), 
                  linear-gradient(135deg, #1A1040 0%, #0D0B1E 100%);
      min-height: 85vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-particles {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.15;
      pointer-events: none;
    }
    .hero-title {
      font-size: clamp(36px, 5vw, 56px);
      font-weight: 800;
      line-height: 1.2;
    }
    .hero-subtitle {
      font-size: 18px;
      color: #8B87A3;
      max-width: 600px;
    }
    .trust-badge {
      display: flex;
      align-items: center;
      gap: 20px;
      color: #8B87A3;
      font-size: 14px;
      margin-top: 20px;
    }
    /* 玻璃卡片 */
    .glass-card {
      background: rgba(255,255,255,0.04);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--ballbet-radius-card);
      box-shadow: var(--ballbet-shadow-card);
      transition: var(--transition-smooth);
    }
    .glass-card:hover {
      border-color: rgba(108,60,225,0.4);
      box-shadow: 0 8px 40px rgba(108,60,225,0.2), 0 0 60px rgba(108,60,225,0.08);
      transform: translateY(-4px);
    }
    .feature-card {
      padding: 32px;
    }
    /* 价值主张交错 */
    .value-stack .col:nth-child(2) .glass-card {
      transform: scale(1.03);
      background: rgba(255,255,255,0.06);
    }
    /* 数字 */
    .stat-number {
      font-size: clamp(40px, 6vw, 64px);
      font-weight: 800;
      color: #F0B90B;
      line-height: 1.2;
    }
    /* 价格卡片 */
    .pricing-card {
      background: rgba(255,255,255,0.04);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 24px;
      padding: 40px 24px;
      transition: var(--transition-smooth);
    }
    .pricing-card.recommended {
      border: 2px solid #F0B90B;
      transform: scale(1.05);
      background: rgba(240,185,11,0.03);
    }
    .pricing-card h3 {
      font-size: 24px;
    }
    .price {
      font-size: 48px;
      font-weight: 800;
      color: white;
    }
    /* FAQ */
    .accordion-button {
      background: rgba(255,255,255,0.03);
      color: white;
      font-weight: 600;
      border-radius: 8px !important;
      padding: 18px 24px;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(108,60,225,0.08);
      color: white;
    }
    .accordion-item {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.06);
      margin-bottom: 12px;
      border-radius: 8px;
    }
    /* CTA 区块 */
    .cta-block {
      background: #1A1040;
      background-image: radial-gradient(circle at 20% 30%, rgba(108,60,225,0.3) 0%, transparent 50%);
    }
    footer {
      background: #0D0B1E;
      color: #8B87A3;
      font-size: 14px;
    }
    @media (max-width: 576px) {
      .btn {
        padding: 12px 24px;
      }
      .pricing-card.recommended {
        transform: none;
      }
    }