:root{--bg:#0f1420;--bg-card:#17203363;--card:#172033;--border:#263350;--text:#e8ecf5;--muted:#93a1bf;--accent:#4f8ef7;--accent-soft:#4f8ef722;--ok:#3ecf8e;--warn:#f5a524;--err:#f2555a;--radius:12px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Vazirmatn,Tahoma,Segoe UI,sans-serif;font-size:14px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1{font-size:20px;margin:0 0 16px}h2{font-size:16px;margin:0 0 12px}.shell{display:flex;min-height:100vh}.sidebar{width:230px;flex-shrink:0;background:#121a2b;border-left:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;gap:4px;position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar .brand{font-weight:700;font-size:16px;padding:4px 10px 16px;border-bottom:1px solid var(--border);margin-bottom:10px}.sidebar .brand small{display:block;color:var(--muted);font-weight:400;font-size:11px;margin-top:2px}.sidebar 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