/* roulang page: index */
:root {
            --bg-base: #0A0A0C;
            --bg-surface: #121216;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-bright: rgba(255, 42, 95, 0.35);
            --color-crimson: #FF2A5F;
            --text-main: #F8FAFC;
            --text-sub: #94A3B8;
        }
        * {
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-border {
            border: 1px solid var(--border-dim);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glow-border:hover {
            border-color: var(--border-bright);
            box-shadow: 0 0 25px rgba(255, 42, 95, 0.18);
        }
        .crimson-glow {
            box-shadow: 0 8px 30px rgba(255, 42, 95, 0.32);
        }
        .mask-gradient {
            mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
            -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] .faq-icon {
            transform: rotate(180deg);
        }

/* roulang page: category1 */
:root {
      --bg-base: #0A0A0C;
      --bg-surface: #121216;
      --border-dim: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(255, 42, 95, 0.35);
      --color-crimson: #FF2A5F;
      --text-main: #F8FAFC;
      --text-sub: #94A3B8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glow-border {
      border: 1px solid var(--border-dim);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-border:hover {
      border-color: var(--border-bright);
      box-shadow: 0 0 25px rgba(255, 42, 95, 0.18);
    }
    .watermark-num {
      -webkit-text-stroke: 1px rgba(255, 255, 255, 0.15);
      color: transparent;
    }
    details[open] .faq-icon {
      transform: rotate(180deg);
    }

/* roulang page: category2 */
:root {
        --bg-base: #0A0A0C;
        --bg-surface: #121216;
        --border-dim: rgba(255, 255, 255, 0.08);
        --border-bright: rgba(255, 42, 95, 0.35);
        --color-crimson: #FF2A5F;
        --text-main: #F8FAFC;
        --text-sub: #94A3B8;
      }
      body {
        background-color: var(--bg-base);
        color: var(--text-main);
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        overflow-x: hidden;
      }
      .glow-border {
        border: 1px solid var(--border-dim);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      }
      .glow-border:hover {
        border-color: var(--border-bright);
        box-shadow: 0 0 25px rgba(255, 42, 95, 0.18);
      }
      .glass-card {
        background: rgba(18, 18, 22, 0.7);
        backdrop-filter: blur(12px);
        border: 1px solid rgba(255, 255, 255, 0.06);
      }
      .custom-scrollbar::-webkit-scrollbar {
        height: 4px;
      }
      .custom-scrollbar::-webkit-scrollbar-thumb {
        background: rgba(255, 42, 95, 0.3);
        border-radius: 4px;
      }

/* roulang page: category3 */
:root {
      --bg-base: #0A0A0C;
      --bg-surface: #121216;
      --border-dim: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(255, 42, 95, 0.35);
      --color-crimson: #FF2A5F;
      --text-main: #F8FAFC;
      --text-sub: #94A3B8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    .glow-border {
      border: 1px solid var(--border-dim);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-border:hover {
      border-color: var(--border-bright);
      box-shadow: 0 0 25px rgba(255, 42, 95, 0.18);
    }
    .text-glow {
      text-shadow: 0 0 16px rgba(255, 42, 95, 0.4);
    }