:root {
  --navy: #003f87;
  --navy-dark: #002a5c;
  --gold: #f2a900;
  --ink: #1c1e21;
  --muted: #5b6169;
  --line: #e3e6ea;
  --bg: #f7f8fa;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

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

.wrap { max-width: 900px; margin: 0 auto; padding: 0 20px; }

.site-header {
  background: var(--navy);
  color: #fff;
  border-bottom: 4px solid var(--gold);
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  color: #fff;
  font-weight: 700;
  font-size: 19px;
  text-decoration: none;
  margin-right: auto;
}
.site-header nav { display: flex; flex-wrap: wrap; gap: 4px; }
.site-header nav a {
  color: #dbe6f5;
  text-decoration: none;
  padding: 6px 11px;
  border-radius: 8px;
  font-size: 14px;
}
.site-header nav a:hover { background: rgba(255, 255, 255, .14); color: #fff; }

main.wrap { padding-top: 30px; padding-bottom: 50px; }
main h1 { color: var(--navy-dark); margin-top: 0; }
main h2 { color: var(--navy-dark); margin-top: 1.6em; border-bottom: 1px solid var(--line); padding-bottom: .2em; }
main h3 { margin-top: 1.3em; }

main table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  margin: 1em 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .07);
}
main th, main td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); }
main th { background: #eef1f5; font-size: 13px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }

blockquote {
  margin: 1em 0;
  padding: 10px 16px;
  border-left: 4px solid var(--gold);
  background: #fffdf5;
  color: var(--muted);
}

code { background: #eef1f5; padding: 1px 5px; border-radius: 4px; font-size: .92em; }
pre { background: #0f1b2d; color: #e6edf7; padding: 14px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; color: inherit; padding: 0; }

.btn {
  display: inline-block;
  background: var(--gold);
  color: #1c1e21;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  margin: 6px 8px 6px 0;
}
.btn:hover { filter: brightness(.95); }

.notice {
  background: #fff4d6;
  border: 1px solid #f0d999;
  border-radius: 8px;
  padding: 12px 16px;
  margin: 1em 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  padding: 22px 0;
  background: #fff;
}

/* Responsive media */
img { max-width: 100%; height: auto; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1em 0; }
.table-wrap table { margin: 0; min-width: 480px; }

@media (max-width: 640px) {
  body { font-size: 15px; }
  .site-header .wrap { padding-top: 10px; padding-bottom: 10px; gap: 6px 10px; }
  .brand { font-size: 17px; }
  .site-header nav { gap: 2px; }
  .site-header nav a { padding: 5px 8px; font-size: 13px; }
  main.wrap { padding-top: 20px; padding-bottom: 34px; }
  main h1 { font-size: 24px; }
  main h2 { font-size: 19px; }
  main th, main td { padding: 7px 9px; font-size: 14px; }
  .btn { display: block; text-align: center; margin: 8px 0; }
  pre { font-size: 13px; }
}