:root {
  --paper: #f8f1e3;
  --card: #fef9ea;
  --ink: #21404f;
  --ink-soft: #5b6b70;
  --coral: #ad332b;
  --line: #d4c4a8;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

header.site img { height: 30px; width: auto; display: block; }

header.site nav { display: flex; gap: 16px; font-size: 14px; }
header.site nav a { color: var(--ink); text-decoration: none; white-space: nowrap; }
header.site nav a:hover { color: var(--coral); }

main { padding: 32px 0 56px; }

h1 {
  font-size: 26px;
  line-height: 1.5;
  margin: 0 0 8px;
}

.updated { color: var(--ink-soft); font-size: 14px; margin: 0 0 28px; }

h2 {
  font-size: 19px;
  margin: 36px 0 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

h3 { font-size: 16px; margin: 20px 0 4px; }

p, li { margin: 0 0 10px; }

ol, ul { padding-left: 1.5em; margin: 0 0 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 16px 0;
}

.mail {
  font-size: 20px;
  font-weight: 600;
  word-break: break-all;
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
  font-size: 14px;
  color: var(--ink-soft);
}

footer.site .links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 10px; }
footer.site a { color: var(--ink-soft); }

/* トップページ */
.hero { text-align: center; padding: 40px 0 8px; }
.hero img { width: min(320px, 80%); height: auto; }
.hero .tagline { font-size: 18px; margin: 12px 0 28px; }
.poem {
  writing-mode: vertical-rl;
  margin: 0 auto 28px;
  font-size: 22px;
  line-height: 2.2;
  height: 11em;
}
.soon {
  display: inline-block;
  border: 1px solid var(--coral);
  color: var(--coral);
  border-radius: 999px;
  padding: 6px 20px;
  font-size: 15px;
}

@media (max-width: 480px) {
  header.site nav { gap: 12px; font-size: 13px; }
  header.site img { height: 22px; }
  h1 { font-size: 22px; }
}

@media (max-width: 340px) {
  header.site nav a:first-child { display: none; }
}