/* roulang page: index */
:root {
            --bg-main: #0A0D14;
            --bg-card: #121624;
            --bg-elevated: #181E32;
            --primary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #D946EF 100%);
            --glow-border: rgba(255, 255, 255, 0.08);
            --glow-border-hover: rgba(139, 92, 246, 0.4);
            --text-title: #FFFFFF;
            --text-body: #94A3B8;
            --text-muted: #64748B;
        }
        body {
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .aurora-gradient-text {
            background: linear-gradient(135deg, #FFFFFF 20%, #C7D2FE 60%, #F472B6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .brand-gradient-bg {
            background: var(--primary-gradient);
        }
        .glow-card {
            background-color: var(--bg-card);
            border: 1px solid var(--glow-border);
            box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .glow-card:hover {
            border-color: var(--glow-border-hover);
            transform: translateY(-4px);
            background-color: var(--bg-elevated);
        }
        .code-screen {
            background: #06080F;
            border: 1px solid rgba(255, 255, 255, 0.06);
            font-family: "JetBrains Mono", Consolas, "Courier New", monospace;
        }
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

/* roulang page: category2 */
:root {
      --bg-main: #0A0D14;
      --bg-card: #121624;
      --bg-elevated: #181E32;
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #D946EF 100%);
      --glow-border: rgba(255, 255, 255, 0.08);
      --glow-border-hover: rgba(139, 92, 246, 0.4);
      --text-title: #FFFFFF;
      --text-body: #94A3B8;
      --text-muted: #64748B;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #FFFFFF 20%, #C7D2FE 60%, #F472B6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-gradient-bg {
      background: var(--primary-gradient);
    }
    .glow-card {
      background-color: var(--bg-card);
      border: 1px solid var(--glow-border);
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glow-card:hover {
      border-color: var(--glow-border-hover);
      transform: translateY(-4px);
      background-color: var(--bg-elevated);
    }
    .data-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .code-syntax {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }

/* roulang page: category1 */
:root {
      --bg-main: #0A0D14;
      --bg-card: #121624;
      --bg-elevated: #181E32;
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #D946EF 100%);
      --glow-border: rgba(255, 255, 255, 0.08);
      --glow-border-hover: rgba(139, 92, 246, 0.4);
      --text-title: #FFFFFF;
      --text-body: #94A3B8;
      --text-muted: #64748B;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #FFFFFF 20%, #C7D2FE 60%, #F472B6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-gradient-bg {
      background: var(--primary-gradient);
    }
    .glow-card {
      background-color: var(--bg-card);
      border: 1px solid var(--glow-border);
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glow-card:hover {
      border-color: var(--glow-border-hover);
      transform: translateY(-4px);
      background-color: var(--bg-elevated);
    }
    .data-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

/* roulang page: category3 */
:root {
      --bg-main: #0A0D14;
      --bg-card: #121624;
      --bg-elevated: #181E32;
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #D946EF 100%);
      --glow-border: rgba(255, 255, 255, 0.08);
      --glow-border-hover: rgba(139, 92, 246, 0.4);
      --text-title: #FFFFFF;
      --text-body: #94A3B8;
      --text-muted: #64748B;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #FFFFFF 20%, #C7D2FE 60%, #F472B6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-gradient-bg {
      background: var(--primary-gradient);
    }
    .glow-card {
      background-color: var(--bg-card);
      border: 1px solid var(--glow-border);
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glow-card:hover {
      border-color: var(--glow-border-hover);
      transform: translateY(-4px);
      background-color: var(--bg-elevated);
    }
    .data-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .code-editor-header {
      background: #0d111c;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .dot-node {
      box-shadow: 0 0 10px #10B981;
    }

/* roulang page: category4 */
:root {
      --bg-main: #0A0D14;
      --bg-card: #121624;
      --bg-elevated: #181E32;
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #D946EF 100%);
      --glow-border: rgba(255, 255, 255, 0.08);
      --glow-border-hover: rgba(139, 92, 246, 0.4);
      --text-title: #FFFFFF;
      --text-body: #94A3B8;
      --text-muted: #64748B;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .aurora-gradient-text {
      background: linear-gradient(135deg, #FFFFFF 20%, #C7D2FE 60%, #F472B6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-gradient-bg {
      background: var(--primary-gradient);
    }
    .glow-card {
      background-color: var(--bg-card);
      border: 1px solid var(--glow-border);
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glow-card:hover {
      border-color: var(--glow-border-hover);
      transform: translateY(-4px);
      background-color: var(--bg-elevated);
    }
    .data-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    details summary::-webkit-details-marker {
      display: none;
    }