@charset "UTF-8";
/* Stories の記事の体裁（2026-10-22）＝独り地理院（introduction.html）の生成りの紙・明朝に合わせ、長い記事のための見出し・表・棒グラフを足した物。
   頁は apps/www/stories.json のカードから www のナビの下の iframe で開く */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --paper: #ece1c9;
  --paper2: #e4d7b8;
  --ink: #2c241a;
  --ink-soft:#463b2b;
  --ink-dim: #8a7856;
  --rule: #c3b18a;
  --indigo: #3f4a68;
  --bar: #a8956c;
  --mincho: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", "Times New Roman", serif;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mincho);
  line-height: 2;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(120% 80% at 50% 0%, rgba(255, 250, 238, 0.55), rgba(120, 100, 60, 0.1) 100%);
}

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

.story-nav {
  max-width: 700px;
  margin: 0 auto;
  padding: 18px 24px 0;
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.story-nav a {
  color: var(--ink-dim);
  text-decoration: none;
}

.story-nav a:hover {
  color: var(--ink);
}

.masthead {
  max-width: 700px;
  margin: 0 auto;
  padding: 36px 24px 0;
  text-align: center;
}

.masthead h1 {
  border-top: 3px double var(--ink-soft);
  border-bottom: 3px double var(--ink-soft);
  padding: 20px 0 22px;
  font-size: clamp(1.5rem, 4.6vw, 2.2rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.masthead .byline {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--ink-dim);
  letter-spacing: 0.05em;
}

.reading {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.essay h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin: 2.2em 0 0.8em;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--rule);
}

.essay p, .essay li {
  color: var(--ink-soft);
  font-size: 1.04rem;
  line-height: 2.1;
  text-align: justify;
  text-justify: inter-character;
}

.essay p {
  margin: 0 0 1.3em;
}

.essay ul, .essay ol {
  margin: 0 0 1.4em 1.4em;
}

.essay li {
  margin-bottom: 0.5em;
}

.essay strong {
  color: var(--ink);
}

.essay .note-small, .essay .chart-cap {
  font-size: 0.85rem;
  color: var(--ink-dim);
  line-height: 1.8;
}

.essay .chart-cap {
  margin: 1.4em 0 0.4em;
  color: var(--ink);
  font-weight: 600;
}

.sig {
  margin: 40px 0 8px;
  text-align: right;
  font-size: 1.1rem;
  color: var(--ink);
  letter-spacing: 0.05em;
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1.5em;
}

.table-wrap.wide {
  width: min(1080px, 100vw - 32px);
  margin-left: 50%;
  transform: translateX(-50%);
}

.table-wrap.wide table {
  font-size: 0.82rem;
}

.table-wrap.wide td:first-child {
  white-space: normal;
  min-width: 5em;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

th, td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--rule);
  text-align: start;
  vertical-align: top;
}

th {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 2px solid var(--ink-dim);
  white-space: nowrap;
}

td:first-child {
  white-space: nowrap;
}

.chart {
  margin: 0 0 1.6em;
  padding: 16px 18px;
  background: var(--paper2);
  border: 1px solid var(--rule);
}

.chart-group + .chart-group {
  margin-top: 14px;
}

.chart-sub {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.bar-row {
  display: grid;
  grid-template-columns: 11em 1fr;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.bar-label {
  text-align: end;
}

.bar-track {
  display: flex;
  align-items: center;
  gap: 6px;
}

.bar {
  display: block;
  height: 12px;
  background: var(--bar);
}

.bar-row.cull .bar {
  background: var(--indigo);
}

.bar-row.ref .bar {
  opacity: 0.45;
}

.bar-row.ref .bar-label {
  color: var(--ink-dim);
}

.bar-val {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 640px) {
  .essay p, .essay li {
    font-size: 1rem;
    line-height: 2;
    text-align: left;
  }
  .bar-row {
    grid-template-columns: 8.5em 1fr;
    font-size: 0.76rem;
  }
  td:first-child {
    white-space: normal;
  }
}
/* 2.0 公開の記事（release-2-0）が使う部品：副題・コード・注記の枠・製図係の署名 */
.masthead .subtitle {
  margin-top: 12px;
  font-size: 1rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.essay code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: rgba(120, 100, 60, 0.1);
  padding: 1px 4px;
  border-radius: 3px;
}

.essay pre {
  margin: 0 0 1.4em;
  padding: 12px 16px;
  background: var(--paper2);
  border: 1px solid var(--rule);
  overflow-x: auto;
  line-height: 1.6;
}

.essay pre code {
  background: none;
  padding: 0;
}

.callout {
  margin: 0 0 1.6em;
  padding: 16px 20px;
  background: var(--paper2);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--indigo);
}

.callout-head {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.callout p {
  margin: 0;
  font-size: 0.98rem;
}

.essay .sig-note {
  margin-top: 36px;
  text-align: right;
  color: var(--indigo);
  font-size: 0.95rem;
}

.essay li {
  text-align: start;
} /* 箇条書きは両端揃えにしない（コード片の前後で字間が開く） */