:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --fg: #1f2328;
  --fg-muted: #59636e;
  --border: #d1d9e0;
  --accent: #0969da;
  --accent-soft: #ddf4ff;
  --term-bg: #161b22;
  --term-fg: #e6edf3;
  --term-accent: #7ee787;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --bg-soft: #151b23;
    --fg: #e6edf3;
    --fg-muted: #9198a1;
    --border: #30363d;
    --accent: #4493f8;
    --accent-soft: #121d2f;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
code, pre { font-family: var(--mono); font-size: 0.875em; }
.wrap { max-width: 940px; margin: 0 auto; padding: 0 20px; }

nav {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
}
nav .wrap {
  display: flex; align-items: center; gap: 18px;
  height: 56px; flex-wrap: wrap;
}
nav .brand { font-family: var(--mono); font-weight: 600; margin-right: auto; }
nav a.plain { color: var(--fg-muted); text-decoration: none; font-size: 14px; }
nav a.plain:hover { color: var(--accent); }
nav a.lang { border-left: 1px solid var(--border); padding-left: 16px; }

header.hero { padding: 56px 0 40px; }
header.hero h1 {
  font-family: var(--mono);
  font-size: clamp(30px, 5vw, 46px);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
header.hero p.lead {
  font-size: 18px; color: var(--fg-muted); margin: 0 0 24px; max-width: 42em;
}
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.badges img { display: block; height: 20px; }
.btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 10px 18px; border-radius: 8px;
  text-decoration: none; font-weight: 600; font-size: 15px;
  border: 1px solid var(--border);
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }
.btn.ghost { color: var(--fg); background: var(--bg-soft); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

figure.term {
  margin: 36px 0 0; padding: 14px;
  background: var(--term-bg); border-radius: var(--radius);
  box-shadow: 0 8px 28px rgba(0,0,0,.22);
}
figure.term::before {
  content: ""; display: block; height: 10px; margin-bottom: 10px;
  background:
    radial-gradient(circle at 6px 5px, #ff5f57 5px, transparent 5.5px),
    radial-gradient(circle at 24px 5px, #febc2e 5px, transparent 5.5px),
    radial-gradient(circle at 42px 5px, #28c840 5px, transparent 5.5px);
}
figure.term img { display: block; width: 100%; height: auto; border-radius: 6px; }
figure.term figcaption {
  color: #9198a1; font-size: 13px; font-family: var(--mono);
  padding: 10px 4px 0; text-align: center;
}

section { padding: 44px 0; border-top: 1px solid var(--border); }
section h2 { font-size: 22px; margin: 0 0 22px; }
section h2 .hash { color: var(--fg-muted); font-family: var(--mono); font-weight: 400; }

ul.features { list-style: none; padding: 0; margin: 0;
  display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
ul.features li {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px;
}
ul.features strong { display: block; margin-bottom: 6px; font-size: 15px; }
ul.features span { color: var(--fg-muted); font-size: 14px; }

pre {
  background: var(--term-bg); color: var(--term-fg);
  padding: 16px 18px; border-radius: var(--radius);
  overflow-x: auto; line-height: 1.6; margin: 0 0 14px;
}
pre .c { color: var(--term-accent); }
pre .p { color: #79c0ff; }
p code, li code, td code, h3 code {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 5px; padding: 1px 5px;
}
h3 { font-size: 16px; margin: 26px 0 10px; }
h3:first-of-type { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--fg-muted); font-weight: 600; white-space: nowrap; }
td:first-child { white-space: nowrap; }
.tbl-wrap { overflow-x: auto; }

.note {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 12px 16px; border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14.5px; color: var(--fg);
}

footer {
  border-top: 1px solid var(--border); padding: 28px 0 44px;
  color: var(--fg-muted); font-size: 14px;
}
footer p { margin: 0 0 8px; }