*{box-sizing:border-box}body{margin:0;background:#f4f7fb;color:#172033;font:15px Arial}header{background:#143d70;color:white;padding:18px max(18px,calc((100% - 1100px)/2));display:flex;justify-content:space-between}main{max-width:1150px;margin:24px auto;padding:0 14px}.card{background:#fff;border:1px solid #e1e8f0;border-radius:12px;padding:17px;margin:14px 0}.nav{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.btn,button{background:#1557a0;color:#fff;padding:10px 14px;border:0;border-radius:7px;text-decoration:none;display:inline-block;cursor:pointer}label{display:block;font-weight:bold;margin:12px 0 5px}input,select,textarea{width:100%;padding:11px;border:1px solid #cbd5e1;border-radius:7px;font:inherit}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:10px;border-bottom:1px solid #e5eaf1}th{background:#edf3fa}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.stat{font-size:27px;font-weight:bold;color:#174e8c}.muted{color:#64748b}.ok{color:#087443}.err{color:#b42318}.phone{font-weight:bold;white-space:nowrap}@media(max-width:700px){table{font-size:12px}th,td{padding:6px}}

.class-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:7px;margin:8px 0 16px}.check{display:flex;align-items:center;gap:6px;font-weight:normal;margin:3px 0}.check input{width:auto}