:root{--blue:#21409a;--blue2:#4472c4;--light:#eef3fb;--red:#d91d65;--text:#1f2937}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#f5f7fb}header{background:#fff;border-bottom:1px solid #dbe2ec;display:flex;justify-content:space-between;align-items:center;padding:14px 28px;position:sticky;top:0;z-index:5}.brand{font-weight:700;color:var(--blue);font-size:20px}nav{display:flex;gap:16px;align-items:center}nav a{color:var(--blue);text-decoration:none}.container{max-width:1180px;margin:28px auto;padding:0 18px}.card{background:white;border:1px solid #dce3ed;border-radius:10px;padding:22px;margin-bottom:20px;box-shadow:0 2px 10px rgba(0,0,0,.03)}h1,h2{color:var(--blue);margin-top:0}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}label{font-weight:600;display:block;margin-bottom:6px}input[type=text],input[type=password],input[type=number],input[type=file],select{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:6px;background:#fff}.check{display:flex;gap:9px;align-items:flex-start;border:1px solid #dbe3ef;border-radius:8px;padding:12px;background:#f8fafc}.check input{margin-top:3px}.muted{color:#64748b;font-size:13px}.btn{display:inline-block;border:0;border-radius:6px;padding:11px 17px;background:var(--blue2);color:#fff;text-decoration:none;cursor:pointer;font-weight:700}.btn.secondary{background:#64748b}.btn.danger{background:#b91c1c}.btn.small{padding:7px 10px;font-size:12px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.alert{padding:12px 14px;border-radius:6px;margin-bottom:16px}.success{background:#dcfce7;color:#166534}.error{background:#fee2e2;color:#991b1b}table{width:100%;border-collapse:collapse;background:#fff}th{background:var(--blue2);color:#fff;text-align:left}th,td{padding:10px;border:1px solid #d8e0ea;vertical-align:top}tr:nth-child(even) td{background:#eef3fb}.badge{display:inline-block;padding:3px 8px;border-radius:999px;background:#e0e7ff;color:#3730a3;font-size:12px}.login{max-width:430px;margin:8vh auto}.sheet-title{font-weight:700;color:var(--blue)}footer{text-align:center;color:#64748b;padding:25px;font-size:12px}@media(max-width:760px){.grid,.grid3{grid-template-columns:1fr}header{align-items:flex-start;gap:12px;flex-direction:column}nav{flex-wrap:wrap}}