:root{font-family:Inter,system-ui,Arial,sans-serif;color:#17202a;background:#f5f7f9}*{box-sizing:border-box}body{margin:0}header{height:72px;background:white;border-bottom:1px solid #dde3e8;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100% - 1040px)/2))}header div{display:flex;gap:14px;align-items:baseline}header b{font-size:24px}header span{color:#66737f}.link{background:none;border:0;color:#345c73;cursor:pointer}main{max-width:880px;margin:56px auto;padding:0 22px}.card{background:#fff;border:1px solid #dfe5e9;border-radius:14px;padding:32px;box-shadow:0 5px 20px #0000000b}h1{font-size:30px;margin:0 0 10px}h2{margin-top:0}.muted{color:#65717b}.field{margin:22px 0}label{display:block;font-weight:650;margin-bottom:7px}input,select{width:100%;padding:13px 14px;border:1px solid #bac5cc;border-radius:9px;font-size:16px}button.primary{background:#164c63;color:white;border:0;border-radius:9px;padding:13px 20px;font-weight:700;cursor:pointer}button.secondary{background:#edf2f4;border:0;border-radius:9px;padding:13px 20px;font-weight:650;cursor:pointer}.row{display:flex;gap:12px;flex-wrap:wrap}.notice{padding:14px 16px;background:#eef5f7;border-radius:9px;margin:18px 0}.error{background:#fff0f0;color:#8c2525}.courses{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:24px 0}.course{border:2px solid #dce5e9;border-radius:12px;padding:18px;cursor:pointer;background:white}.course.selected{border-color:#164c63;background:#f1f7f8}.success{font-size:54px}.admin{border-top:5px solid #164c63}table{width:100%;border-collapse:collapse;font-size:14px}td,th{padding:9px;border-bottom:1px solid #e5e9ec;text-align:left}@media(max-width:600px){main{margin-top:28px}.card{padding:22px}header span{display:none}}