:root { color-scheme: dark; --ink: #f4f7f2; --muted: #b7c2b4; --neon: #39ff14; --bg: #0b0f0c; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 40px 20px 64px; }
h1 { font-size: 34px; line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
h2 { font-size: 20px; margin: 28px 0 8px; }
p, li { color: var(--muted); }
a { color: var(--neon); }
code, .code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; word-break: break-all; }
.code { display: block; background: #111a13; border: 1px solid #24402a; border-radius: 12px; padding: 12px; color: var(--ink); margin: 12px 0; }
button { font: inherit; background: var(--neon); color: #0b1a07; border: 0; border-radius: 999px; padding: 12px 18px; font-weight: 650; cursor: pointer; }
footer { margin-top: 40px; font-size: 13px; }