:root { --bg:#f9fafb; --card:#fff; --text:#111827; --muted:#4b5563; --border:#e5e7eb; --primary:#0f2939; --accent:#c8952f; }
@media (prefers-color-scheme: dark) { :root { --bg:#0e1922; --card:#16242f; --text:#e8eef3; --muted:#a9bac6; --border:#27394a; --primary:#6eb2cf; --accent:#e5bd72; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--text); font-family:'Nunito',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; line-height:1.6; }
main { max-width:760px; margin:0 auto; padding:1.5rem 1rem 3rem; }
header { display:flex; align-items:center; gap:.75rem; margin-bottom:1.25rem; }
header img { width:44px; height:44px; }
header a { color:var(--text); text-decoration:none; font-weight:700; font-size:1.2rem; }
.card { background:var(--card); border:1px solid var(--border); border-radius:12px; padding:1.25rem 1.25rem 1.5rem; }
h1 { font-size:1.6rem; line-height:1.25; margin:.2rem 0 .3rem; }
h2 { font-size:1.1rem; margin:1.6rem 0 .4rem; }
p, li { color:var(--muted); }
strong { color:var(--text); }
ul, ol { padding-left:1.25rem; }
a { color:var(--primary); }
.date { font-size:.9rem; color:var(--muted); margin:0 0 1rem; }
.steps li { margin-bottom:.4rem; }
.box { background:var(--bg); border:1px solid var(--border); border-radius:10px; padding:.85rem 1rem; margin:1rem 0; }
footer { margin-top:1.5rem; font-size:.9rem; color:var(--muted); text-align:center; }