/* roulang page: index */
:root {
            --brand-primary: #0F766E;
            --brand-primary-hover: #115E59;
            --brand-primary-light: #CCFBF1;
            --dark-obsidian: #0B1120;
            --dark-card: #151E32;
            --signal-amber: #D97706;
            --bg-canvas: #F8FAFC;
            --text-heading: #0F172A;
            --text-content: #334155;
            --text-sub: #64748B;
            --border-line: #E2E8F0;
        }

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

        .tabular-nums {
            font-variant-numeric: tabular-nums;
        }

        .glass-header {
            background-color: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .hero-pattern-bg {
            background: linear-gradient(135deg, rgba(11, 17, 32, 0.88) 0%, rgba(15, 118, 110, 0.82) 100%),
                        url('/assets/images/f1e29c769b87eafe.jpg') center/cover no-repeat;
        }

        .topology-bg {
            background: linear-gradient(180deg, #0B1120 0%, #111A2E 100%),
                        url('/assets/images/6cc5ba3439636cbb.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
        }

        .custom-card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
        }

        .custom-card-shadow:hover {
            box-shadow: 0 16px 32px -4px rgba(15, 118, 110, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.06);
        }

        .glow-border {
            box-shadow: inset 0 0 0 1px rgba(20, 184, 166, 0.25);
        }

        .glow-border:hover {
            box-shadow: inset 0 0 0 1px rgba(20, 184, 166, 0.65), 0 0 20px rgba(13, 148, 136, 0.15);
        }

        /* 移动端无横向溢出保护 */
        html, body {
            max-width: 100%;
        }