:root {
  --ink: #1c2128;
  --muted: #57606a;
  --bg: #ffffff;
  --soft: #f6f8fa;
  --line: #d8dee4;
  --accent: #2f6f4f;
  --accent-ink: #1a4731;
  --code: #24292f;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, kbd { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
code { background: var(--soft); padding: 0.12em 0.35em; border-radius: 4px; font-size: 0.9em; }
pre {
  background: var(--soft); border: 1px solid var(--line); border-radius: 8px;
  padding: 0.9rem 1rem; overflow-x: auto; font-size: 0.86rem; line-height: 1.5;
}
pre code { background: none; padding: 0; }

header.site {
  border-bottom: 1px solid var(--line); background: #fff;
  position: sticky; top: 0; z-index: 10;
}
header.site .bar {
  max-width: 60rem; margin: 0 auto; padding: 0.8rem 1.25rem;
  display: flex; align-items: center; gap: 1.25rem;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; color: var(--accent); }
header.site nav { margin-left: auto; display: flex; gap: 1.1rem; flex-wrap: wrap; }
header.site nav a { color: var(--muted); font-size: 0.92rem; }
header.site nav a:hover { color: var(--accent); text-decoration: none; }

main { max-width: 50rem; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.wide { max-width: 60rem; }
h1 { font-size: 1.9rem; line-height: 1.15; letter-spacing: -0.02em; margin: 0.5rem 0 0.6rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 0.5rem; padding-top: 0.4rem; }
h3 { font-size: 1.05rem; margin: 1.4rem 0 0.3rem; }
.lede { font-size: 1.2rem; color: var(--muted); margin: 0 0 1.4rem; }

.hero { padding: 2.5rem 0 1rem; }
.hero h1 { font-size: 2.4rem; }
.tag { display:inline-block; background: var(--soft); border:1px solid var(--line); color: var(--muted);
  border-radius: 999px; padding: 0.15rem 0.7rem; font-size: 0.8rem; margin-bottom: 1rem; }
.cta { display:flex; gap:0.6rem; flex-wrap:wrap; margin: 1.2rem 0; }
.btn { background: var(--accent); color:#fff; padding: 0.5rem 1rem; border-radius: 7px; font-weight:600; font-size:0.95rem; }
.btn:hover { background: var(--accent-ink); text-decoration:none; }
.btn.ghost { background:#fff; color: var(--accent); border:1px solid var(--line); }

.features { display:grid; grid-template-columns: repeat(auto-fit,minmax(15rem,1fr)); gap:1.1rem; margin:1.6rem 0; }
.card { border:1px solid var(--line); border-radius:10px; padding:1.1rem 1.2rem; background:#fff; }
.card h3 { margin-top:0; }
.card p { margin:0.3rem 0 0; color: var(--muted); font-size:0.95rem; }

table { border-collapse: collapse; width:100%; margin:1rem 0; font-size:0.93rem; }
th, td { border:1px solid var(--line); padding:0.5rem 0.7rem; text-align:left; vertical-align:top; }
th { background: var(--soft); }

.note { border-left:3px solid var(--accent); background: var(--soft); padding:0.7rem 1rem; border-radius:0 6px 6px 0; margin:1rem 0; }
ul, ol { padding-left:1.3rem; }
li { margin:0.25rem 0; }
hr { border:0; border-top:1px solid var(--line); margin:2rem 0; }

.changelog h3 { border-bottom:1px solid var(--line); padding-bottom:0.3rem; }
.changelog .date { color: var(--muted); font-weight:400; font-size:0.85rem; margin-left:0.5rem; }

footer { border-top:1px solid var(--line); color: var(--muted); font-size:0.85rem; }
footer .bar { max-width:60rem; margin:0 auto; padding:1.5rem 1.25rem 3rem; display:flex; gap:1rem; flex-wrap:wrap; }
footer a { color: var(--muted); }