:root {
  --blue: #003399;
  --bg: #ffffff;
  --fg: #1f1f1f;
  --muted: #5f6368;
  --line: #e3e6eb;
  --soft: #eef2fb;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --fg: #e8e8ea;
    --muted: #9b9a9f;
    --line: #2e2f33;
    --soft: #15254d;
    color-scheme: dark;
  }
  a { color: #9db4f0; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 "Google Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header {
  border-bottom: 1px solid var(--line);
  padding-block: 14px;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
header a { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 600; font-size: 20px; }
header svg { width: 30px; height: 30px; }
main {
  max-width: 760px;
  margin: 0 auto;
  padding-block: 24px 64px;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 4px; text-wrap: balance; }
h2 { font-size: 20px; margin: 32px 0 8px; text-wrap: balance; }
h3 { font-size: 17px; margin: 20px 0 6px; }
p, li { max-width: 68ch; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.lang { font-size: 14px; color: var(--muted); }
a { color: var(--blue); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { font-weight: 600; }
.table { overflow-x: auto; }
.card { background: var(--soft); border-radius: 16px; padding: 16px 20px; margin: 16px 0; }
.steps li { margin-bottom: 6px; }
nav.list a { display: block; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 18px; text-decoration: none; }
nav.list span { display: block; color: var(--muted); font-size: 14px; }
details { border-bottom: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; }
footer { color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 48px; padding-top: 16px; }