/* roulang page: index */
:root {
            --bg-base: #0B0F19;
            --bg-panel: #111827;
            --border-color: #1F2937;
            --border-highlight: #374151;
            --primary-cyan: #06B6D4;
            --status-green: #10B981;
            --text-main: #F9FAFB;
            --text-sub: #9CA3AF;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }

        .metric-mono {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            letter-spacing: -0.02em;
        }

        .hairline-border {
            border: 1px solid var(--border-color);
        }

        .hairline-b {
            border-bottom: 1px solid var(--border-color);
        }

        .hairline-t {
            border-top: 1px solid var(--border-color);
        }

        .glow-cyan-hover:hover {
            border-color: var(--primary-cyan);
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.12);
        }

        /* 脉冲指示灯动画 */
        @keyframes pulseDot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }

        .animate-pulse-fast {
            animation: pulseDot 1.6s infinite ease-in-out;
        }

        /* 自定义折叠面板过渡 */
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .accordion-content.open {
            max-height: 240px;
        }

        .accordion-icon {
            transition: transform 0.25s ease;
        }

        .accordion-item.active .accordion-icon {
            transform: rotate(180deg);
        }

        .accordion-item.active {
            border-color: var(--primary-cyan);
        }

/* roulang page: category1 */
:root {
      --bg-base: #0B0F19;
      --bg-panel: #111827;
      --border-color: #1F2937;
      --border-highlight: #374151;
      --primary-cyan: #06B6D4;
      --status-green: #10B981;
      --text-main: #F9FAFB;
      --text-sub: #9CA3AF;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .hairline-border {
      border: 1px solid var(--border-color);
    }
    .hairline-b {
      border-bottom: 1px solid var(--border-color);
    }
    .hairline-t {
      border-top: 1px solid var(--border-color);
    }
    .filter-tag.active {
      background-color: rgba(6, 182, 212, 0.15);
      border-color: var(--primary-cyan);
      color: #38BDF8;
    }
    .accordion-card.active .faq-chevron {
      transform: rotate(180deg);
      color: var(--primary-cyan);
    }
    .accordion-card.active {
      border-color: var(--primary-cyan);
      box-shadow: 0 0 15px rgba(6, 182, 212, 0.08);
    }