:root{--bg: #f6f7fb;--surface: #ffffff;--surface-soft: #f1f3f9;--border: #e3e7f0;--text: #16203a;--text-soft: #5b6478;--muted: #8a93a8;--accent: #3b5bdb;--accent-soft: #e8edfd;--danger: #c0362c;--radius: 14px;--shadow: 0 1px 2px rgba(22, 32, 58, .05), 0 8px 24px rgba(22, 32, 58, .06)}@media(prefers-color-scheme:dark){:root{--bg: #10131c;--surface: #171b26;--surface-soft: #1e2432;--border: #262d3d;--text: #e8ebf4;--text-soft: #a8b0c4;--muted: #7b849b;--accent: #7e9bff;--accent-soft: #1e2740;--danger: #ff8577;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 28px rgba(0, 0, 0, .28)}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,PingFang SC,Microsoft 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