:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --text: #1c1917;
  --muted: #57534e;
  --border: #e7e5e4;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --surface: #1c1917;
    --text: #f5f5f4;
    --muted: #a8a29e;
    --border: #292524;
    --accent: #5eead4;
    --accent-soft: #134e4a;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--accent); }

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header.site .inner,
main,
footer.site .inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

header.site .inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

nav a {
  margin-left: 18px;
  text-decoration: none;
  font-size: 0.95rem;
}
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { font-weight: 600; text-decoration: underline; }

main { padding-top: 32px; padding-bottom: 48px; }

h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.3rem; margin: 36px 0 8px; }
h3 { font-size: 1.05rem; margin: 24px 0 4px; }

.lead { font-size: 1.15rem; color: var(--muted); margin-top: 0; }
.meta { color: var(--muted); font-size: 0.9rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  margin: 20px 0;
}

.note {
  background: var(--accent-soft);
  border-radius: 10px;
  padding: 12px 16px;
}

ol.steps { padding-left: 1.3em; }
ol.steps li { margin-bottom: 8px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 12px 0;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

footer.site {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}
footer.site .inner { padding-top: 20px; padding-bottom: 28px; }
footer.site a { margin-right: 16px; }