:root{font-family:Inter,Segoe UI,sans-serif;color:#132138;background:#f4f7fb}*{box-sizing:border-box}body{margin:0;min-height:100vh}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr}.sidebar{background:#fff;border-right:1px solid #e4e8f0;padding:20px 16px}.sidebar nav{display:flex;flex-direction:column;gap:8px;margin-top:20px}.sidebar a{padding:10px 12px;border-radius:10px;font-weight:600;color:#4b5a78}.sidebar a.active{background:#172b4d;color:#fff}.main{padding:24px}.card{background:#fff;border:1px solid #e6eaf3;border-radius:14px;padding:16px}.stack{display:grid;gap:16px}.row{display:flex;gap:12px;align-items:center}.input,textarea,select,button{font:inherit}.input,textarea,select{width:100%;border:1px solid #cfd7e6;border-radius:10px;padding:10px 12px}button{border:0;border-radius:10px;background:#172b4d;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600}button.secondary{background:#fff;color:#172b4d;border:1px solid #cfd7e6}.muted{color:#6b7a99}@media (max-width: 920px){.app-shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid #e4e8f0}}