/* roulang page: index */
:root {
            --bg-primary: #0c0e14;
            --bg-secondary: #131722;
            --bg-card: #1a1f2e;
            --text-main: #f8fafc;
            --text-sub: #cbd5e1;
            --text-dim: #64748b;
            --accent-rose: #e11d48;
            --accent-purple: #9333ea;
            --accent-indigo: #6366f1;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(225, 29, 72, 0.4);
        }
        body {
            background-color: var(--bg-primary);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .text-gradient {
            background: linear-gradient(135deg, #f43f5e 0%, #a855f7 50%, #6366f1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .card-glow {
            border: 1px solid var(--border-subtle);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-glow:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 20px 30px -10px rgba(225, 29, 72, 0.2);
        }
        .glass-header {
            background: linear-gradient(90deg, rgba(12, 14, 20, 0.92) 0%, rgba(24, 18, 38, 0.92) 50%, rgba(12, 14, 20, 0.92) 100%);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, opacity 0.3s ease-out;
            opacity: 0;
        }
        .faq-content.active {
            max-height: 240px;
            opacity: 1;
        }
        .faq-icon.active {
            transform: rotate(180deg);
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0c0e14;
            --bg-secondary: #131722;
            --bg-card: #1a1f2e;
            --text-main: #f8fafc;
            --text-sub: #cbd5e1;
            --text-dim: #64748b;
            --accent-rose: #e11d48;
            --accent-purple: #9333ea;
            --accent-indigo: #6366f1;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(225, 29, 72, 0.4);
        }
        body {
            background-color: var(--bg-primary);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .text-gradient {
            background: linear-gradient(135deg, #f43f5e 0%, #a855f7 50%, #6366f1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .card-glow {
            border: 1px solid var(--border-subtle);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-glow:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 20px 30px -10px rgba(225, 29, 72, 0.2);
        }
        .glass-header {
            background: linear-gradient(90deg, rgba(12, 14, 20, 0.92) 0%, rgba(24, 18, 38, 0.92) 50%, rgba(12, 14, 20, 0.92) 100%);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .skew-hero {
            position: relative;
            background: linear-gradient(135deg, #131722 0%, #1e1333 60%, #0c0e14 100%);
            clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
        }
        @media (min-width: 768px) {
            .skew-hero {
                clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
            }
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, opacity 0.3s ease-out;
            opacity: 0;
        }
        .faq-content.active {
            max-height: 240px;
            opacity: 1;
        }
        .faq-icon.active {
            transform: rotate(180deg);
        }
        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }
        .scrollbar-none {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

/* roulang page: category1 */
:root {
      --bg-primary: #0c0e14;
      --bg-secondary: #131722;
      --bg-card: #1a1f2e;
      --text-main: #f8fafc;
      --text-sub: #cbd5e1;
      --text-dim: #64748b;
      --accent-rose: #e11d48;
      --accent-purple: #9333ea;
      --accent-indigo: #6366f1;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(225, 29, 72, 0.4);
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .text-gradient {
      background: linear-gradient(135deg, #f43f5e 0%, #a855f7 50%, #6366f1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .card-glow {
      border: 1px solid var(--border-subtle);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-glow:hover {
      border-color: var(--border-hover);
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(225, 29, 72, 0.25);
    }
    .glass-header {
      background: linear-gradient(90deg, rgba(12, 14, 20, 0.92) 0%, rgba(24, 18, 38, 0.92) 50%, rgba(12, 14, 20, 0.92) 100%);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, opacity 0.3s ease-out;
      opacity: 0;
    }
    .faq-content.active {
      max-height: 240px;
      opacity: 1;
    }
    .faq-icon.active {
      transform: rotate(180deg);
    }
    .filter-pill.active {
      background: linear-gradient(135deg, #e11d48, #9333ea);
      color: #ffffff;
      border-color: transparent;
      box-shadow: 0 4px 14px rgba(225, 29, 72, 0.35);
    }

/* roulang page: category3 */
:root {
      --bg-primary: #0c0e14;
      --bg-secondary: #131722;
      --bg-card: #1a1f2e;
      --text-main: #f8fafc;
      --text-sub: #cbd5e1;
      --text-dim: #64748b;
      --accent-rose: #e11d48;
      --accent-purple: #9333ea;
      --accent-indigo: #6366f1;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(225, 29, 72, 0.4);
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .text-gradient {
      background: linear-gradient(135deg, #f43f5e 0%, #a855f7 50%, #6366f1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .card-glow {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-glow:hover {
      border-color: var(--border-hover);
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(225, 29, 72, 0.25);
    }
    .glass-header {
      background: linear-gradient(90deg, rgba(12, 14, 20, 0.92) 0%, rgba(24, 18, 38, 0.92) 50%, rgba(12, 14, 20, 0.92) 100%);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, opacity 0.3s ease-out;
      opacity: 0;
    }
    .faq-content.active {
      max-height: 320px;
      opacity: 1;
    }
    .faq-icon.active {
      transform: rotate(180deg);
    }