:root{color-scheme:light;--paper:#E9ECF0;--card:#fff;--ink:#171B21;--muted:#5C6774;--line:#C4CBD4;--red:#C93A2B;--blue:#2B5EA7;--ochre:#D9A62E;--disp:Arial,sans-serif;--body:Arial,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);line-height:1.6}a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}.wrap{width:min(900px,calc(100% - 32px));margin:0 auto;padding:34px 0 42px}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.brand{display:flex;align-items:center;gap:12px;font-weight:900;color:var(--ink);text-decoration:none}.mark{width:38px;height:38px;background:var(--ink);display:grid;place-items:center;color:var(--ochre);box-shadow:4px 4px 0 var(--red)}.langs{display:flex;gap:8px}.langs button{border:2px solid var(--line);background:#fff;padding:7px 11px;font-weight:800;cursor:pointer}.langs button.on{background:var(--ink);color:#fff;border-color:var(--ink)}main{background:var(--card);border:1px solid var(--line);padding:30px;box-shadow:7px 7px 0 rgba(23,27,33,.12)}h1{margin:0 0 8px;font-size:clamp(28px,4vw,42px);line-height:1.08}h2{margin:24px 0 8px;font-size:1.12rem}.lead{margin:0 0 22px;color:var(--muted)}ul{padding-left:20px}.note{margin-top:20px;padding:14px 16px;border-left:4px solid var(--red);background:#fff7f6}.lang-panel{display:none}.lang-panel.active{display:block}.foot{margin-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.84rem}.foot nav{display:flex;gap:12px;flex-wrap:wrap}@media(max-width:620px){.top{align-items:flex-start;flex-direction:column}main{padding:22px}}