:root {
  --text: #222;
  --muted: #555;
  --accent: #2e7d4f;
  --accent-bg: #eef6f0;
  --alert: #b3261e;
  --alert-bg: #fdf1f0;
  --line: #d9ddd9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", Meiryo, sans-serif;
  line-height: 1.9;
}
.site-header {
  border-bottom: 4px solid var(--accent);
  padding: 14px 20px;
  font-weight: bold;
  color: var(--accent);
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
h1 {
  font-size: 1.6rem;
  line-height: 1.5;
  margin: 0 0 24px;
  padding: 12px 16px;
  background: var(--alert-bg);
  border-left: 6px solid var(--alert);
}
h2 {
  font-size: 1.2rem;
  margin: 40px 0 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--accent);
}
h3 { font-size: 1.05rem; margin: 24px 0 4px; }
p { margin: 0 0 1em; }
.contact {
  background: var(--accent-bg);
  padding: 16px 20px;
  border-radius: 6px;
}
.contact dl { margin: 0 0 12px; display: grid; grid-template-columns: 4em 1fr; row-gap: 4px; }
.contact dt { font-weight: bold; }
.contact dd { margin: 0; overflow-wrap: anywhere; }
.contact p { margin: 0; color: var(--muted); font-size: .95rem; }
a { color: #0b57d0; }
a:focus-visible { outline: 3px solid #f2a900; outline-offset: 2px; }
ul.dl { list-style: none; margin: 0; padding: 0; }
ul.dl > li { padding: 10px 0; border-bottom: 1px dotted var(--line); }
ul.dl ul { list-style: none; margin: 6px 0 0 1.2em; padding: 0; }
ul.dl ul li { padding: 4px 0; }
body { overflow-wrap: anywhere; }
.fmt {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 16px;            /* PDFとExcelの間隔（誤タップ防止） */
  margin-left: 16px;
  vertical-align: middle;
}
.fmt a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  min-height: 44px;     /* 指で押しやすい高さ */
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  text-decoration: none;
  white-space: nowrap;
}
.fmt a:hover { background: var(--accent-bg); border-color: var(--accent); }
@media (max-width: 560px) {
  main { padding: 24px 16px 48px; }
  h1 { font-size: 1.3rem; }
  h2 { font-size: 1.1rem; }
  .fmt { display: flex; margin: 8px 0 0; }
  .fmt a { flex: 1 1 auto; }
  ul.dl ul { margin-left: .6em; }
  ul.dl ul li { padding: 10px 0; border-top: 1px dotted var(--line); }
  ul.dl ul li:first-child { border-top: 0; }
}
.note { display: block; font-size: .9rem; color: var(--muted); margin-top: 2px; }
footer {
  border-top: 1px solid var(--line);
  padding: 16px 20px;
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
}