:root{color-scheme:dark}body{margin:0;background:#0d1117;color:#e6edf3;font:16px/1.8 system-ui,sans-serif}header,main{max-width:1100px;margin:auto;padding:20px}header{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}nav{display:flex;gap:10px;flex-wrap:wrap}a{color:#80e2ed}button{background:#17232f;color:#fff;border:1px solid #748499;border-radius:6px;min-height:44px;padding:10px;font:inherit;cursor:pointer}button[aria-pressed=true]{border:2px solid #80e2ed}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #ffcc66;outline-offset:3px}h1{font-size:clamp(24px,5vw,36px)}h2{margin-top:36px;font-size:22px}details{border:1px solid #526478;border-radius:8px;margin:12px 0;padding:10px 16px}summary{cursor:pointer;min-height:44px;display:list-item;align-content:center}li,p,td{overflow-wrap:anywhere}li{margin:14px 0}a{display:inline-block;min-height:24px}article[hidden]{display:none}main{padding-bottom:70px}.learn-table th:first-child{min-width:145px}.learn-table td{min-width:240px}*[id]{scroll-margin-top:20px}