/* roulang page: index */
:root {
            --slate-base: #0F172A;
            --slate-deep: #020617;
            --teal-accent: #0D9488;
            --indigo-accent: #6366F1;
            --surface-card: #FFFFFF;
            --surface-bg: #F8FAFC;
            --border-line: #E2E8F0;
        }
        html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
        body { background-color: var(--surface-bg); color: #334155; line-height: 1.75; }
        .bento-hero-bg {
            background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(2,6,23,0.96) 100%), url('/assets/images/17ee5d0b6ef49f99.png') center/cover no-repeat;
        }
        .tech-pattern-bg {
            background-color: #020617;
            background-image: radial-gradient(rgba(99, 102, 241, 0.15) 1px, transparent 0);
            background-size: 24px 24px;
        }
        .card-subtle-glow {
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-subtle-glow:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.08);
            border-color: #CBD5E1;
        }
        .tabular-nums { font-variant-numeric: tabular-nums; }
        details summary::-webkit-details-marker { display:none; }