:root{--bg:#f3f5f8;--surface:#fff;--border:#d9dee6;--border-light:#e8ebf0;--text:#2b3440;--text-muted:#6b7684;--heading:#1c2530;--primary:#33567f;--primary-hover:#27436a;--primary-soft:#e6edf5;--danger:#a03c3c;--danger-soft:#f7e9e9;--nav-bg:#22303f;--nav-text:#b9c4d0;--nav-text-active:#fff;--nav-active-bg:#33567f;--ok:#2e7d4f;--ok-soft:#e3f1e9;--sans:system-ui, "Segoe UI", Roboto, Arial, sans-serif;--mono:ui-monospace, Consolas, "Courier New", monospace}*{box-sizing:border-box}html,body,#root{height:100%}body{font:14px/1.45 var(--sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0}h1{color:var(--heading);margin:0;font-size:20px;font-weight:600}h2{color:var(--heading);margin:0;font-size:16px;font-weight:600}h3{color:var(--heading);margin:0 0 10px;font-size:14px;font-weight:600}h4{color:var(--heading);margin:0 0 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var(--border);border-radius:8px;padding:14px 16px}