/* roulang page: index */
:root {
      --bg-base: #0B0D13;
      --bg-alt: #121622;
      --bg-card: #181D2A;
      --brand-purple: #8B5CF6;
      --brand-cyan: #06B6D4;
      --brand-pink: #F43F5E;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --border-subtle: #273144;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      overflow-x: hidden;
    }
    .text-gradient {
      background: linear-gradient(135deg, #F8FAFC 20%, #A78BFA 60%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-purple-cyan {
      background: linear-gradient(90deg, #8B5CF6 0%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .flow-glow-card {
      background: #181D2A;
      border: 1px solid rgba(255, 255, 255, 0.07);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .flow-glow-card:hover {
      border-color: rgba(139, 92, 246, 0.4);
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -6px rgba(139, 92, 246, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    .glow-btn {
      background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
      box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
      transition: all 0.25s ease;
    }
    .glow-btn:hover {
      box-shadow: 0 0 30px rgba(139, 92, 246, 0.65);
      filter: brightness(1.1);
    }
    .status-pulse {
      box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
      animation: pulseGlow 2s infinite;
    }
    @keyframes pulseGlow {
      0% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7); }
      70% { box-shadow: 0 0 0 10px rgba(6, 182, 212, 0); }
      100% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
    }
    .drawer-mask {
      background: rgba(7, 9, 14, 0.85);
      backdrop-filter: blur(10px);
      transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    .drawer-content {
      transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .faq-answer {
      transition: max-height 0.35s ease-out, opacity 0.3s ease;
    }

/* roulang page: category1 */
:root {
        --bg-base: #0B0D13;
        --bg-alt: #121622;
        --bg-card: #181D2A;
        --brand-purple: #8B5CF6;
        --brand-cyan: #06B6D4;
        --brand-pink: #F43F5E;
        --text-main: #F8FAFC;
        --text-muted: #94A3B8;
        --text-dim: #64748B;
        --border-subtle: #273144;
      }
      body {
        background-color: var(--bg-base);
        color: var(--text-main);
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        overflow-x: hidden;
      }
      .text-gradient {
        background: linear-gradient(135deg, #F8FAFC 20%, #A78BFA 60%, #06B6D4 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
      }
      .text-purple-cyan {
        background: linear-gradient(90deg, #8B5CF6 0%, #06B6D4 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
      }
      .flow-glow-card {
        background: #181D2A;
        border: 1px solid rgba(255, 255, 255, 0.07);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      }
      .flow-glow-card:hover {
        border-color: rgba(139, 92, 246, 0.4);
        transform: translateY(-4px);
        box-shadow: 0 12px 28px -6px rgba(139, 92, 246, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.1);
      }
      .glow-btn {
        background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
        box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
        transition: all 0.25s ease;
      }
      .glow-btn:hover {
        box-shadow: 0 0 30px rgba(139, 92, 246, 0.65);
        filter: brightness(1.1);
      }
      .drawer-mask {
        background: rgba(7, 9, 14, 0.85);
        backdrop-filter: blur(10px);
        transition: opacity 0.3s ease, visibility 0.3s ease;
      }
      .drawer-content {
        transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
      }
      .coupon-cut-left, .coupon-cut-right {
        position: relative;
      }
      .coupon-cut-left::before {
        content: '';
        position: absolute;
        left: -12px;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background-color: var(--bg-alt);
      }
      .coupon-cut-right::after {
        content: '';
        position: absolute;
        right: -12px;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background-color: var(--bg-alt);
      }

/* roulang page: category2 */
:root {
      --bg-base: #0B0D13;
      --bg-alt: #121622;
      --bg-card: #181D2A;
      --brand-purple: #8B5CF6;
      --brand-cyan: #06B6D4;
      --brand-pink: #F43F5E;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --border-subtle: #273144;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      overflow-x: hidden;
    }
    .text-gradient {
      background: linear-gradient(135deg, #F8FAFC 20%, #A78BFA 60%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-purple-cyan {
      background: linear-gradient(90deg, #8B5CF6 0%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .flow-glow-card {
      background: #181D2A;
      border: 1px solid rgba(255, 255, 255, 0.07);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .flow-glow-card:hover {
      border-color: rgba(139, 92, 246, 0.4);
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -6px rgba(139, 92, 246, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    .glow-btn {
      background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
      box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
      transition: all 0.25s ease;
    }
    .glow-btn:hover {
      box-shadow: 0 0 30px rgba(139, 92, 246, 0.65);
      filter: brightness(1.1);
    }
    .drawer-mask {
      background: rgba(7, 9, 14, 0.85);
      backdrop-filter: blur(10px);
      transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    .drawer-content {
      transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .faq-answer {
      transition: max-height 0.35s ease-out, opacity 0.3s ease;
    }
    .tab-btn.active {
      background: #8B5CF6;
      color: #FFFFFF;
      box-shadow: 0 0 16px rgba(139, 92, 246, 0.45);
    }