:root{font:16px/1.55 system-ui,sans-serif;color:#182b46;background:#f2f5fa}*{box-sizing:border-box}body{margin:0}main{max-width:1040px;margin:40px auto;padding:0 20px}header{padding:22px 0}header span{font-size:12px;font-weight:750;letter-spacing:2px;color:#4068bc}h1{font-size:48px;line-height:1;margin:16px 0}h2{font-size:21px;margin-top:0}p{color:#52647c}section{background:white;border:1px solid #dde5f1;border-radius:16px;padding:26px;margin:22px 0;box-shadow:0 8px 30px #20334f06}.badge{display:inline-block;background:#e0ecff;padding:9px 15px;border-radius:12px;color:#254b8c}nav,.actions{display:flex;gap:12px;flex-wrap:wrap}nav form{margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}label{display:block;font-weight:600}input{display:block;width:100%;font:inherit;border:1px solid #b6c5d9;padding:11px;border-radius:8px;margin:7px 0 14px}button{font:600 14px system-ui;background:#245bd6;color:white;border:0;border-radius:8px;padding:12px 17px;cursor:pointer}button:hover{background:#1b49b1}.check{font-weight:400;max-width:650px;margin:15px 0}.check input{display:inline;width:auto;margin:0 7px 0 0}.error{background:#fff0ed;color:#9d301e;padding:16px;border-radius:8px}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f3f6fa;padding:18px;border-radius:9px;max-height:500px;overflow:auto}article{border-top:1px solid #dde5f1;padding:18px 0}.actions form{flex:1;min-width:180px;border:1px solid #e2e8f2;border-radius:8px;padding:14px}.actions input[type=number]{max-width:90px}footer{font-size:13px;margin:24px 0 50px;color:#60718a}@media(max-width:650px){main{margin-top:12px}.grid{grid-template-columns:1fr}section{padding:18px}h1{font-size:38px}nav form{flex:1}nav button{width:100%}}