:root {color-scheme:light; font:16px/1.6 system-ui,sans-serif;color:#182337;background:#f3f5f8}body{margin:0}main{max-width:820px;margin:24px auto;padding:24px;background:white;border-radius:16px}header{display:flex;align-items:center;justify-content:space-between;gap:20px}h1{font-size:28px}h2{font-size:21px}a{color:#234fc4}button{min-height:44px;padding:10px 16px;margin:8px 8px 8px 0;border:0;border-radius:8px;background:#234fc4;color:white;cursor:pointer;font:inherit}button:disabled{background:#637187;cursor:not-allowed}input{width:22px;height:22px;vertical-align:middle}label{display:block;padding:16px;background:#f3f5f8;border-radius:8px}video,img{display:block;width:100%;max-width:600px;margin-top:16px;border-radius:8px}img[hidden]{display:none}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px}article{border-top:1px solid #dce1e9;padding:20px 0}:focus-visible{outline:3px solid #d27813;outline-offset:3px}@media(max-width:600px){main{margin:0;border-radius:0;padding:18px}header{display:block}}