:root {
  --ink: #2b2b2b;
  --sub: #666;
  --accent: #4a8f8c;
  --bg: #fdfcf9;
  --line: #e5e0d8;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  font-size: 16px;
}
header {
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.header-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
}
.site-title { font-size: 17px; font-weight: 700; }
.site-title a { color: var(--ink); text-decoration: none; }
nav { font-size: 13px; }
nav a { color: var(--sub); text-decoration: none; margin-right: 14px; }
nav a:hover { color: var(--accent); }
main { max-width: 760px; margin: 0 auto; padding: 40px 20px 60px; }
h1 { font-size: 24px; margin-bottom: 24px; line-height: 1.5; }
h2 {
  font-size: 19px;
  margin: 40px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
  line-height: 1.5;
}
h3 { font-size: 16px; margin: 24px 0 10px; }
p { margin-bottom: 14px; }
ul, ol { margin: 0 0 14px 1.4em; }
li { margin-bottom: 6px; }
table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 20px;
  background: #fff;
  font-size: 15px;
}
th, td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th { background: #f4f1ea; white-space: nowrap; }
.note { font-size: 13.5px; color: var(--sub); }
.price { font-weight: 700; color: var(--accent); }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 700;
  margin: 8px 0 16px;
}
footer {
  border-top: 1px solid var(--line);
  padding: 24px 20px 40px;
  text-align: center;
  font-size: 13px;
  color: var(--sub);
  background: #fff;
}
footer a { color: var(--sub); margin: 0 8px; }
@media (max-width: 480px) {
  body { font-size: 15px; }
  h1 { font-size: 21px; }
  th { white-space: normal; }
}