:root{--bg:#f6f3ec;--card:#fffdf8;--ink:#1d2b27;--muted:#5b6b66;--accent:#0f5a4d;--accent-ink:#ffffff;--line:#d9d4c7}
@media (prefers-color-scheme:dark){:root{--bg:#0e1714;--card:#15221e;--ink:#e8efeb;--muted:#9bb0a8;--accent:#7fd1bd;--accent-ink:#06201a;--line:#27382f}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent)}a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
header,main,footer{max-width:42rem;margin:0 auto;padding:0 20px}
header{padding-top:28px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem;color:var(--ink);text-decoration:none}
.brand img{width:34px;height:34px;border-radius:8px}
nav a{margin-right:16px;text-decoration:none;font-size:.95rem}
h1{font-size:2rem;line-height:1.2;margin:1.6rem 0 .4rem}h2{font-size:1.25rem;margin:2rem 0 .4rem}h3{font-size:1.05rem;margin:1.4rem 0 .3rem}
p,li{max-width:38rem}.lead{font-size:1.15rem;color:var(--muted)}.muted{color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:18px 0}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:10px 18px;border-radius:12px;text-decoration:none;font-weight:600}
.btn.off{opacity:.55;cursor:default}
.lang{display:flex;gap:12px;margin:.6rem 0 0}
hr{border:0;border-top:1px solid var(--line);margin:2.2rem 0}
footer{padding:28px 20px 48px;color:var(--muted);font-size:.9rem}