/* アプリと同じ地。和紙の色と明朝の見出し。 */
:root {
  --paper: #f0eae0;
  --ink: #57574d;
  --ink-2: #87877d;
  --ink-3: #a8a89a;
  --sage: #7d7d63;
  --line: rgba(184, 179, 166, 0.35);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.9;
  font-size: 15px;
}
.wrap { max-width: 42rem; margin: 0 auto; padding: 3.5rem 1.5rem 5rem; }
h1 {
  font-family: "Hiragino Mincho ProN", "Noto Serif JP", serif;
  font-weight: 600; font-size: 1.9rem; line-height: 1.5; margin: 0 0 .5rem;
}
h2 {
  font-family: "Hiragino Mincho ProN", "Noto Serif JP", serif;
  font-size: 1.15rem; font-weight: 600; margin: 2.5rem 0 .75rem;
  padding-bottom: .4rem; border-bottom: 1px solid var(--line);
}
h3 { font-size: 1rem; margin: 1.75rem 0 .5rem; }
p, li { color: var(--ink); }
.lead { color: var(--ink-2); font-size: 1.05rem; }
.meta { color: var(--ink-3); font-size: .85rem; }
a { color: var(--sage); text-underline-offset: 3px; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: .92rem; }
th, td { text-align: left; padding: .6rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-2); font-weight: 600; white-space: nowrap; }
.note {
  background: rgba(255,255,255,.55); border-radius: 12px;
  padding: 1rem 1.15rem; margin: 1.25rem 0; font-size: .92rem;
}
nav { margin-bottom: 2.5rem; font-size: .9rem; }
nav a { margin-right: 1.25rem; }
footer { margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
         color: var(--ink-3); font-size: .85rem; }
.todo { background: #fff3cd; border-radius: 6px; padding: 0 .35rem; }