:root {
  --bg: #f6faf7; --surface: #ffffff; --text: #112118; --muted: #4c5f54;
  --primary: #17a150; --primary-ink: #ffffff; --border: #d9e6dd;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #112118; --surface: #17291f; --text: #eef6f0; --muted: #9db4a5; --border: #264034; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--primary); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header.site { padding: 20px 0; }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
nav a { margin-left: 16px; color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--text); }
.hero { text-align: center; padding: 56px 0 40px; }
.hero img.logo { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 8px 24px rgba(23, 161, 80, .25); }
h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.15; margin: 24px 0 12px; }
.lead { color: var(--muted); font-size: 18px; max-width: 520px; margin: 0 auto 28px; }
.btn { display: inline-block; background: var(--primary); color: var(--primary-ink); padding: 14px 28px; border-radius: 12px; font-weight: 600; text-decoration: none; border: 0; font-size: 16px; cursor: pointer; }
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.badge { display: inline-block; padding: 6px 14px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 14px; margin-top: 16px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin: 24px 0 56px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
main.doc { padding: 24px 0 64px; }
main.doc h1 { font-size: 32px; margin-top: 8px; }
main.doc h2 { font-size: 20px; margin-top: 32px; }
.notice { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--primary); border-radius: 8px; padding: 12px 16px; color: var(--muted); font-size: 15px; }
footer.site { border-top: 1px solid var(--border); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
footer.site a { color: var(--muted); margin-right: 16px; }
.center { text-align: center; padding: 72px 0; }
mark { background: rgba(23, 161, 80, .18); color: inherit; padding: 0 4px; border-radius: 4px; }
main.doc h3 { font-size: 17px; margin-top: 20px; }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 4px 0; }
.meta { color: var(--muted); font-size: 14px; }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }
table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 12px 0; }
th, td { text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); padding: 8px 6px; }