* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: #e9e5dc;
  color: #2d2a26;
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}
header, main, footer {
  width: min(720px, calc(100% - 40px));
  margin-inline: auto;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #cfc6b6;
}
.brand {
  color: #2d2a26;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}
.back {
  font-size: 14px;
  white-space: nowrap;
}
main {
  padding: 36px 0 48px;
}
h1, h2 {
  line-height: 1.55;
  font-weight: 700;
}
h1 {
  margin: 0 0 20px;
  font-size: clamp(24px, 4vw, 28px);
}
h2 {
  margin: 36px 0 12px;
  font-size: 20px;
}
p {
  margin: 0 0 16px;
}
.lead {
  color: #746c61;
  font-size: 17px;
  margin-bottom: 24px;
}
a {
  color: #5c4931;
  text-underline-offset: 3px;
}
a:hover {
  text-decoration-thickness: 2px;
}
a:focus-visible {
  outline: 3px solid #315d9a;
  outline-offset: 4px;
}
ul, ol {
  padding-left: 24px;
  margin: 12px 0 20px;
}
li {
  margin: 8px 0;
}
dt {
  font-weight: 700;
  margin-top: 20px;
}
dd {
  margin: 4px 0 16px;
}
.note {
  padding-left: 16px;
  border-left: 3px solid #a48a5b;
}
footer {
  padding: 24px 0 32px;
  border-top: 1px solid #cfc6b6;
  color: #746c61;
  font-size: 14px;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}
footer small {
  display: block;
  margin-top: 20px;
  font-size: 12px;
}
@media (max-width: 480px) {
  header, main, footer {
    width: calc(100% - 32px);
  }
  main {
    padding-top: 28px;
  }
}

.encyclopedia-entry{display:grid;grid-template-columns:54px minmax(0,1fr);gap:16px;padding:20px 0;border-bottom:1px solid #cfc6b6;scroll-margin-top:20px}.encyclopedia-entry h3{font-size:17px;margin:0 0 6px}.encyclopedia-entry p{margin:0 0 8px}.catalog-timing,.catalog-planned{font-size:14px;color:#746c61}.guide-figure{margin:24px 0}.guide-board{display:grid;grid-template-columns:repeat(5,44px);gap:2px;width:max-content;margin:auto}.guide-cell{display:grid;place-items:center;width:44px;height:44px;font:700 28px monospace;color:#315d9a}.guide-closed{background:#b9b09e;border:3px outset #d5cbb6}.guide-open{background:#ded7c7;border:1px solid #a89f8e}.guide-reference{box-shadow:inset 0 0 0 3px #315d9a}.guide-mine{box-shadow:inset 0 0 0 3px #b1493d}.guide-safe{box-shadow:inset 0 0 0 3px #4e886c}figcaption{margin-top:14px;font-size:14px;color:#746c61;text-align:center}