:root{color-scheme:light dark;--accent:#8a4a00;--bg:#faf9f7;--fg:#202020;--muted:#565656;--line:#ddd}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}main,header,footer{max-width:760px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px;flex-wrap:wrap}a{color:var(--accent);text-underline-offset:4px}nav{display:flex;gap:20px}h1{font-size:clamp(32px,7vw,48px);line-height:1.1;letter-spacing:-1.2px;margin:40px 0 24px}h2{font-size:23px;line-height:1.3;margin-top:36px}p{margin:16px 0}.lead{font-size:21px;color:var(--muted)}footer{border-top:1px solid var(--line);font-size:14px;color:var(--muted)}details{border-top:1px solid var(--line);padding:18px 0}summary{font-weight:600;cursor:pointer}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}@media(prefers-color-scheme:dark){:root{--accent:#ffc071;--bg:#121212;--fg:#f2f2f2;--muted:#b8b8b8;--line:#383838}}