:root{font-family:Arial,sans-serif;color:#17324e;background:#f5f8fc}*{box-sizing:border-box}body{margin:0}a{color:#1166a6;text-decoration:none}header{background:#fff;border-bottom:1px solid #dfe8f0;padding:18px max(20px,calc((100vw - 1160px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.brand{font-weight:800;font-size:23px;color:#0e4b85}.brand span{color:#17324e}nav{display:flex;flex-wrap:wrap;gap:20px;align-items:center}main{max-width:1160px;margin:auto;min-height:78vh;padding:32px 20px 90px}footer{text-align:center;padding:25px;background:#123a60;color:#e1eef7}.hero{background:linear-gradient(115deg,#0a345c,#146fa9);color:#fff;border-radius:20px;padding:clamp(28px,5vw,60px);margin:18px 0 38px}.hero p{letter-spacing:.13em;font-size:12px;font-weight:800}.hero h1{font-size:clamp(32px,4vw,52px);margin:12px 0}.hero span{line-height:1.6}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}.card,.box{display:block;background:#fff;border:1px solid #dfe8f0;border-radius:16px;padding:26px;margin-bottom:20px}.card h3{color:#123f68}.card p{color:#5c7185;line-height:1.5}.card strong,.button,button{display:inline-block;background:#1269a9;color:#fff;border:0;border-radius:10px;padding:12px 18px;font-weight:700;cursor:pointer}.card strong{margin-top:12px}.box h2{margin-top:0}.auth{max-width:500px;margin:40px auto}.alert{background:#e9f4fa;color:#11547e;padding:14px;border-radius:10px;margin-bottom:20px}label{display:block;font-weight:600;margin:14px 0}input,textarea{display:block;width:100%;padding:12px;border:1px solid #bccfdf;border-radius:9px;margin-top:6px;font:inherit}textarea{min-height:100px}button:hover,.button:hover{background:#085184}.lesson{border-top:1px solid #e0e9f0;padding:20px 0}.content{line-height:1.7;white-space:normal;overflow-wrap:anywhere;margin:15px 0}@media(max-width:650px){header{align-items:flex-start}nav{gap:12px}main{padding:20px 15px 70px}}
.brand{display:inline-flex;align-items:center;gap:8px}.brand img{height:46px;width:46px;object-fit:contain}