:root {
  --bg: #0e1116;
  --panel: #161b22;
  --border: #2b333d;
  --fg: #e6edf3;
  --muted: #9aa7b4;
  --accent: #4dd4ac;
  --accent-dim: #2f8f74;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", "Noto Sans SC", "PingFang SC", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 860px; margin: 0 auto; padding: 40px 20px 80px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 44px; height: 44px; display: block; }
header.top { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
h1 { font-size: 2rem; margin: 0 0 .2em; letter-spacing: .5px; }
.tagline { color: var(--muted); margin: 0 0 8px; }
.accent-line { color: var(--accent); font-weight: 600; letter-spacing: .3px; margin: 10px 0 0; }
.lang { font-size: .9rem; color: var(--muted); }
.lang a { color: var(--muted); }
.lang strong { color: var(--accent); }
section { margin: 34px 0 0; }
h2 { font-size: 1.12rem; margin: 0 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
pre {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; overflow-x: auto; font-family: var(--mono); font-size: .86rem; margin: 10px 0;
}
code { font-family: var(--mono); font-size: .88em; background: #1d232b; padding: 1px 5px; border-radius: 4px; }
pre code { background: none; padding: 0; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 10px 0; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
ul { padding-left: 20px; margin: 8px 0; }
li { margin: 4px 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.note { color: var(--muted); font-size: .88rem; }
footer { margin-top: 46px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: .86rem; }
.badge { display: inline-block; font-size: .76rem; border: 1px solid var(--accent-dim); color: var(--accent); border-radius: 999px; padding: 2px 9px; margin-left: 8px; vertical-align: middle; }