:root{--bg:#0f0f15;--fg:#f2f2f5;--muted:#a3a3b0;--accent:#ff3b30;--card:#1a1a22}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
main{max-width:760px;margin:0 auto;padding:48px 16px 80px}
a{color:#ff8a80}
header{display:flex;align-items:center;gap:12px;margin-bottom:32px}
.logo{background:var(--accent);color:#fff;font-weight:900;padding:6px 14px;border-radius:999px;letter-spacing:.5px;text-decoration:none}
nav{margin-left:auto;display:flex;gap:16px;font-size:15px}
nav a{color:var(--muted);text-decoration:none}
h1{font-size:2.2rem;line-height:1.15;margin:0 0 12px}
h2{margin-top:36px;font-size:1.25rem}
.muted{color:var(--muted)}
.card{background:var(--card);border-radius:16px;padding:20px 24px;margin:24px 0}
code,.code{font-family:ui-monospace,Menlo,monospace;background:#000;padding:12px 14px;border-radius:10px;display:block;word-break:break-all}
button{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:10px 18px;font-weight:700;font-size:16px;cursor:pointer;margin-top:12px}
footer{margin-top:56px;font-size:14px;color:var(--muted)}