/* roulang page: index */
:root {
            --color-primary: #0B132B;
            --color-secondary: #1C2541;
            --color-accent-green: #0E7060;
            --color-accent-gold: #C59B27;
            --color-bg-light: #F4F6F9;
            --color-border: #E2E8F0;
            --border-radius-card: 12px;
            --border-radius-btn: 6px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: #FFFFFF;
            color: #0F172A;
            line-height: 1.75;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

        .num-tabular {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }

        .heading-tight {
            letter-spacing: -0.02em;
        }

        .glass-header {
            background: rgba(11, 19, 43, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .card-subtle {
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }

        .card-subtle:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px -8px rgba(11, 19, 43, 0.08);
            border-color: rgba(14, 112, 96, 0.3);
        }

        .dark-card-subtle {
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .dark-card-subtle:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.4);
            border-color: rgba(197, 155, 39, 0.4);
        }

        .tab-active {
            border-color: var(--color-accent-green);
            color: var(--color-accent-green);
            background-color: #F0FDF4;
        }

        /* 隐藏原生滚动条并提供极简条纹 */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #F1F5F9;
        }
        ::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #94A3B8;
        }