:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:#102031;background:#f4f8fb}*{box-sizing:border-box}body{margin:0}.app-shell{max-width:1100px;margin:0 auto;padding:24px}.top-nav{display:flex;gap:12px;margin-bottom:24px}.top-nav a{text-decoration:none;color:#1e4970;padding:8px 12px;border-radius:8px;background:#dce9f4}.card{background:#fff;border-radius:12px;padding:16px;margin-bottom:16px;box-shadow:0 4px 12px #10203114}.row{display:flex;gap:8px;flex-wrap:wrap}input,select,button{padding:8px;border-radius:8px;border:1px solid #b9cad9}button{cursor:pointer;background:#1e4970;color:#fff}