:root {
  --bg: #ffffff; --fg: #1d2330; --muted: #5b6475; --line: #e3e7ee; --soft: #f4f7fb;
  --accent: #0f9d58; --accent-fg: #ffffff; --code: #eef2f7;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11151c; --fg: #e8ecf2; --muted: #a2abba; --line: #2a313d; --soft: #181e27; --accent: #34c27a; --accent-fg: #0b1a12; --code: #1f2631; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main, header, footer { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 20px; padding-bottom: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
.brand img { width: 32px; height: 32px; }
nav a { color: var(--muted); margin: 0 0 0 16px; text-decoration: none; font-size: 15px; }
nav a:hover, a { color: var(--accent); }
h1 { font-size: clamp(28px, 6vw, 44px); line-height: 1.15; margin: 32px 0 12px; }
h2 { font-size: 24px; margin: 48px 0 12px; }
h3 { font-size: 18px; margin: 24px 0 6px; }
.lead { font-size: 20px; color: var(--muted); max-width: 640px; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-fg); padding: 12px 22px; border-radius: 8px; font-weight: 600; text-decoration: none; margin: 16px 12px 0 0; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
code, pre { background: var(--code); border-radius: 6px; font: 14px/1.5 ui-monospace, Consolas, monospace; }
code { padding: 2px 6px; }
pre { padding: 14px 16px; overflow-x: auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { min-width: 0; border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; background: var(--soft); }
.card h3 { margin-top: 0; }
.price { font-size: 30px; font-weight: 700; }
.muted { color: var(--muted); font-size: 15px; }
footer { border-top: 1px solid var(--line); margin-top: 64px; padding-top: 20px; padding-bottom: 40px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 16px; }