:root { color-scheme: dark; --bg:#12131A; --surface:#1B1D29; --text:#F4F5FA; --muted:#9AA0B8; --accent:#4DA3FF; }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--text); font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
header { display:flex; align-items:center; gap:16px; margin-bottom: 24px; }
header img { width:64px; height:64px; border-radius:16px; }
h1 { margin:0; font-size: 28px; letter-spacing: 2px; }
h2 { margin-top: 32px; font-size: 20px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
nav a { margin-right: 16px; }
.hero { text-align:center; padding: 24px 0 8px; }
.hero img { width: 160px; height:160px; border-radius: 36px; box-shadow: 0 20px 60px rgba(77,163,255,.25); }
.hero h1 { font-size: 40px; margin-top: 16px; }
.grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 14px; margin-top: 24px; }
.card { background: var(--surface); border-radius: 18px; padding: 16px; }
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin:0; color: var(--muted); font-size: 14px; }
footer { margin-top: 40px; color: var(--muted); font-size: 13px; }

.cta { display:inline-block; background:var(--accent); color:#08121f; text-decoration:none;
       font-weight:900; letter-spacing:2px; padding:14px 26px; border-radius:16px; }
.cta:hover { filter:brightness(1.08); }
pre { white-space:pre-wrap; }