:root { --bg: #fbf8f4; --ink: #1d1d1f; --sub: #5c5c63; --accent: #b4632b; --card: #ffffff; --line: #ebe5dd; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #17171a; --ink: #f2f2f4; --sub: #a5a5ad; --accent: #e8955a; --card: #222226; --line: #333338; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Helvetica Neue", sans-serif; }
a { color: var(--accent); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 24px; }
header .logo { font-weight: 700; text-decoration: none; color: var(--ink); font-size: 19px; }
nav a { margin-left: 18px; text-decoration: none; color: var(--sub); font-size: 15px; }
nav a:hover { color: var(--accent); }
.hero { text-align: center; padding: 56px 0 24px; }
.hero h1 { font-size: 40px; line-height: 1.25; margin: 0 0 12px; }
.hero p { color: var(--sub); margin: 0 auto 28px; max-width: 560px; }
.hero img { width: 260px; max-width: 70%; margin-top: 28px; }
.button { display: inline-block; background: var(--ink); color: var(--bg); padding: 12px 26px; border-radius: 999px;
  text-decoration: none; font-weight: 600; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin: 40px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--sub); font-size: 15px; }
article h1 { font-size: 32px; margin: 40px 0 4px; }
article .updated { color: var(--sub); font-size: 14px; margin-bottom: 28px; }
article h2 { font-size: 21px; margin: 36px 0 8px; }
article code { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; font-size: 14px; }
article pre { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; overflow-x: auto; }
footer { color: var(--sub); font-size: 14px; padding-top: 48px; padding-bottom: 40px; }
footer a { color: var(--sub); }