:root {
  --ink: #1c2430;
  --muted: #5b6572;
  --line: #d9dee6;
  --accent: #0b5cad;
  --bg: #ffffff;
  --panel: #f5f7fa;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  display: flex; flex-direction: column; min-height: 100vh;
  margin: 0; color: var(--ink); background: var(--bg);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.8; overflow-wrap: anywhere;
}
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.skip-link {
  position: absolute; top: 8px; left: 16px; z-index: 1;
  transform: translateY(calc(-100% - 16px));
  background: var(--bg); border: 2px solid var(--accent); padding: 8px 12px;
}
.skip-link:focus { transform: translateY(0); }
img, video { max-width: 100%; height: auto; }
pre { max-width: 100%; overflow-x: auto; }
header.site {
  border-bottom: 3px solid var(--ink);
  padding: 20px 16px 12px;
}
header.site .brand, nav.main { max-width: 848px; margin-inline: auto; }
header.site .brand { font-size: 28px; font-weight: 800; letter-spacing: .02em; }
header.site .brand small { display: block; font-size: 13px; font-weight: 400; color: var(--muted); }
nav.main { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 8px; font-size: 14px; }
nav.main a { display: inline-flex; align-items: center; min-height: 44px; max-width: 100%; text-decoration: none; }
nav.main a[aria-current="page"], footer.site a[aria-current="page"] { font-weight: 700; text-decoration: underline; }
nav.main a:hover, footer.site a:hover, .card a:hover { text-decoration: underline; }
main { flex: 1; width: 100%; max-width: 880px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 26px; line-height: 1.4; }
h2 { font-size: 20px; border-left: 4px solid var(--accent); padding-left: 10px; margin-top: 36px; }
table.record { border-collapse: collapse; table-layout: fixed; width: 100%; margin: 12px 0; font-size: 14px; }
table.record th, table.record td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
table.record th { background: var(--panel); width: 28%; }
.pr-label {
  display: inline-block; border: 1px solid var(--ink); padding: 0 8px;
  font-size: 12px; font-weight: 700; margin-bottom: 8px;
}
.coi, .note {
  background: var(--panel); border: 1px solid var(--line);
  padding: 12px 14px; font-size: 13px; color: var(--muted); margin: 20px 0;
}
.meta { color: var(--muted); font-size: 13px; }
footer.site {
  border-top: 1px solid var(--line); padding: 16px;
  font-size: 13px; color: var(--muted); text-align: center;
}
footer.site a { display: inline-block; max-width: 100%; padding: 10px 8px; text-decoration: none; }
.card { border: 1px solid var(--line); padding: 14px 16px; margin: 12px 0; }
.card a { color: var(--accent); text-decoration: none; font-weight: 700; }
@media (max-width: 480px) {
  header.site .brand { font-size: 24px; }
  h1 { font-size: 23px; }
  h2 { font-size: 19px; }
  table.record th, table.record td { padding: 8px; }
  table.record th { width: 32%; }
  ul, ol { padding-left: 1.5em; }
}