:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --border: #d1d9e0;
  --surface: #f6f8fa;
  --accent: #3b5bdb;
  --accent-fg: #ffffff;
  --max: 920px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --fg: #e6edf3;
    --muted: #9198a1;
    --border: #30363d;
    --surface: #1d2229;
    --accent: #6d8cff;
    --accent-fg: #0d1117;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }
img, svg { max-width: 100%; }
code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 0.9em; background: var(--surface); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

header.site {
  border-bottom: 1px solid var(--border);
}
header.site .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 12px;
  padding-bottom: 12px;
}
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
.logo svg { width: 36px; height: 36px; }
nav.site { display: flex; gap: 16px; flex-wrap: wrap; margin-left: auto; }
nav.site a { color: var(--fg); text-decoration: none; }
nav.site a:hover { color: var(--accent); }

.hero { padding: 56px 0 32px; }
.hero h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.15; margin: 0 0 16px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 680px; margin: 0 0 24px; }

.buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.button.primary { background: var(--accent); color: var(--accent-fg); }

section { padding: 24px 0; }
h2 { font-size: 26px; margin: 0 0 12px; }
h3 { font-size: 19px; margin: 20px 0 6px; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; background: var(--surface); }
.card h3 { margin-top: 0; }
.card p { margin: 0; color: var(--muted); }

.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; vertical-align: top; }
th { background: var(--surface); }

details { border-bottom: 1px solid var(--border); padding: 10px 0; }
summary { cursor: pointer; font-weight: 600; }

ol li, ul li { margin: 4px 0; }
.note { color: var(--muted); font-size: 15px; }

footer.site { border-top: 1px solid var(--border); margin-top: 32px; padding: 20px 0 32px; color: var(--muted); font-size: 15px; }
footer.site .wrap { display: flex; gap: 16px; flex-wrap: wrap; }