:root{color:#12202f;background:#f2f5f8;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh}a{color:#00579f;text-decoration:none}button{cursor:pointer}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#0d253f;color:#ecf2f9;padding:20px}.sidebar a{color:#ecf2f9;display:block;margin:10px 0}.main{padding:20px}.card{background:#fff;border:1px solid #d6dde5;border-radius:8px;padding:16px;margin-bottom:12px}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}input,select,textarea{border:1px solid #b7c3d0;border-radius:6px;padding:8px}.error{color:#ac1b2a}.ok{color:#0a7b34}.list{display:grid;gap:8px}@media(max-width:900px){.layout{grid-template-columns:1fr}}