:root{color-scheme:light dark;--bg:#f5f6f2;--card:#fff;--text:#17201d;--muted:#64706b;--brand:#17755a;--line:#dce3de}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.62 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{width:min(780px,calc(100% - 32px));margin:0 auto;padding:56px 0 80px}.brand{color:var(--brand);font-weight:800;letter-spacing:.08em;text-transform:uppercase}h1{font-size:clamp(2.2rem,7vw,4rem);line-height:1.02;margin:.25em 0}h2{margin-top:2em;line-height:1.2}h3{margin-top:1.5em}.lead{font-size:1.15rem;color:var(--muted)}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;margin:24px 0}a{color:var(--brand);font-weight:650}.nav{display:flex;gap:18px;flex-wrap:wrap;margin:28px 0}.muted,footer{color:var(--muted);font-size:.9rem}ul{padding-left:1.25rem}@media(prefers-color-scheme:dark){:root{--bg:#111613;--card:#19201c;--text:#edf3ef;--muted:#a8b4ad;--brand:#70d4ad;--line:#34413a}}