:root{--bg:#f7f8fb;--surface:#fff;--surface-muted:#eef2f6;--ink:#17263b;--ink-soft:#526176;--ink-faint:#8a95a5;--line:#dce3ec;--accent:#0b8a5f;--accent-soft:#e7f6ef;--navy:#14243b;--danger:#b42318;--warning:#a15c07;--success:#027a48;--info:#175cd3;--shadow:0 18px 45px #14243b14}*{box-sizing:border-box}html{background:var(--bg);min-width:320px}body{color:var(--ink);background:var(--bg);letter-spacing:0;margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}textarea{resize:vertical}.app-shell{grid-template-columns:260px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{color:#f8fafc;background:var(--navy);height:100vh;padding:22px 18px;position:sticky;top:0}.brand{align-items:center;gap:10px;padding:8px 8px 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