:root {
  --paper: #EEF1EA;
  --paper-line: #D8DED2;
  --ink: #1C2B2E;
  --ink-soft: #4A5A56;
  --red-ink: #B5503A;
  --green-ink: #3E6153;
  --card-bg: #F7F8F3;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Sans", sans-serif;
  line-height: 1.9;
  font-size: 16px;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 37px,
    var(--paper-line) 38px
  );
}

a { color: var(--green-ink); }
a:hover { color: var(--red-ink); }

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  padding: 56px 0 28px;
  border-bottom: 2px solid var(--ink);
}

header.site .wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.brand {
  font-family: "Noto Serif JP", serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
}

.brand small {
  display: block;
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 4px;
  letter-spacing: 0.08em;
}

nav.site a {
  margin-left: 20px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 14px;
}

/* ---- Home / index ---- */

.hero {
  padding: 48px 0 32px;
}

.hero h1 {
  font-family: "Noto Serif JP", serif;
  font-size: 30px;
  line-height: 1.6;
  margin: 0 0 16px;
}

.hero p {
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 52ch;
}

.ledger {
  list-style: none;
  margin: 0 0 64px;
  padding: 0;
  border-top: 1px solid var(--ink);
}

.ledger li {
  border-bottom: 1px solid var(--paper-line);
}

.ledger a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 22px 4px;
  text-decoration: none;
  color: var(--ink);
}

.ledger a:hover .entry-title { color: var(--red-ink); }

.entry-no {
  font-family: "Noto Serif JP", serif;
  color: var(--ink-soft);
  font-size: 13px;
  min-width: 2.4em;
}

.entry-title {
  flex: 1;
  font-family: "Noto Serif JP", serif;
  font-size: 17px;
}

.entry-tag {
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---- Article ---- */

article.post {
  padding: 40px 0 80px;
}

article.post .kicker {
  font-size: 13px;
  color: var(--green-ink);
  margin-bottom: 10px;
}

article.post h1 {
  font-family: "Noto Serif JP", serif;
  font-size: 27px;
  line-height: 1.6;
  margin: 0 0 28px;
}

article.post h2 {
  font-family: "Noto Serif JP", serif;
  font-size: 19px;
  margin: 40px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--paper-line);
}

article.post p { margin: 0 0 20px; }

.figure-box {
  background: var(--card-bg);
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--green-ink);
  padding: 20px 22px;
  margin: 24px 0;
}

.figure-box .amount {
  font-family: "Noto Serif JP", serif;
  font-size: 24px;
  color: var(--ink);
}

.figure-box .label {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
}

.source-note {
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px dashed var(--paper-line);
  margin-top: 40px;
  padding-top: 16px;
}

.disclaimer {
  background: var(--card-bg);
  border: 1px solid var(--paper-line);
  padding: 16px 20px;
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 32px;
}

footer.site {
  border-top: 2px solid var(--ink);
  padding: 24px 0 48px;
  font-size: 13px;
  color: var(--ink-soft);
}