:root {
  --ground: #edf0ee;
  --paper: #f8faf8;
  --ink: #1d2a2b;
  --ink-soft: #55686a;
  --ink-faint: #8b9b9c;
  --primary: #2f6b63;
  --primary-soft: #a9c7c1;
  --accent: #b5622f;
  --line: #d5ddd9;
  --wash: rgba(47, 107, 99, 0.05);
  --wash-accent: rgba(181, 98, 47, 0.07);
  --shadow: 0 1px 2px rgba(29, 42, 43, 0.04), 0 10px 30px rgba(29, 42, 43, 0.06);
  --r-card: 14px;
  --r-pill: 999px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #101615;
    --paper: #18201f;
    --ink: #e2eae7;
    --ink-soft: #9fb2ae;
    --ink-faint: #728481;
    --primary: #6fbdb0;
    --primary-soft: #33514c;
    --accent: #d98a55;
    --line: #26312f;
    --wash: rgba(111, 189, 176, 0.07);
    --wash-accent: rgba(217, 138, 85, 0.09);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

h1, h2, h3, .ttl, .card .t, .scale text, .axis-name {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 600;
  line-height: 1.6;
}

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

a { color: var(--primary); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 2px; }

/* ---------- header ---------- */
.top { border-bottom: 1px solid var(--line); }
.top .wrap {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; padding-top: 18px; padding-bottom: 18px; flex-wrap: wrap;
}
.sitemark {
  font-size: 11px; letter-spacing: .2em; color: var(--ink-faint);
  text-decoration: none; text-transform: uppercase;
}
.sitemark:hover { color: var(--primary); }
.back { font-size: 13px; text-decoration: none; color: var(--ink-soft); }
.back:hover { color: var(--primary); }

/* ---------- hero ---------- */
.hero { padding: 64px 0 40px; }
.eyebrow {
  font-size: 11px; letter-spacing: .22em; color: var(--accent);
  text-transform: uppercase; margin: 0 0 18px;
}
.hero h1 { font-size: 30px; margin: 0 0 26px; }
.hero h1 .em { color: var(--primary); }
.lede { color: var(--ink-soft); margin: 0 0 18px; }

/* ---------- 自力・他力スケール ---------- */
.scale { width: 100%; height: auto; display: block; margin: 8px 0 4px; }
.scale .rail { stroke: var(--line); stroke-width: 2; }
.scale .tick { stroke: var(--primary-soft); stroke-width: 1.5; }
.scale .dot { fill: var(--primary); }
.scale .dot-hi { fill: var(--accent); }
.scale text { font-size: 12px; fill: var(--ink-soft); }
.scale .end { font-size: 12px; fill: var(--ink-faint); letter-spacing: .08em; }
.scale .hi { fill: var(--accent); font-weight: 600; }
figure.fig { margin: 28px 0; }
figure.fig figcaption {
  font-size: 13px; color: var(--ink-faint); line-height: 1.8; margin-top: 10px;
}

/* ---------- sections ---------- */
.ch { padding: 34px 0; border-top: 1px solid var(--line); }
.ch h2 { font-size: 21px; margin: 0 0 16px; }
.ch h3 { font-size: 17px; margin: 30px 0 10px; color: var(--primary); }
.ch p { margin: 0 0 18px; }
.ch ul, .ch ol { margin: 0 0 18px; padding-left: 1.3em; }
.ch li { margin-bottom: 8px; }

/* ---------- 答えカード(シグネチャ) ---------- */
.answer {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 22px 24px; margin: 26px 0;
  box-shadow: var(--shadow);
}
.answer .who {
  font-family: "Noto Serif JP", serif; font-weight: 600;
  font-size: 17px; margin: 0 0 4px;
}
.answer .who-sub { font-size: 12px; color: var(--ink-faint); margin: 0 0 16px; letter-spacing: .04em; }
.answer dl { margin: 0; display: grid; grid-template-columns: 7.5em 1fr; gap: 10px 16px; }
.answer dt {
  font-size: 12px; color: var(--accent); letter-spacing: .06em;
  border-right: 1px solid var(--line); padding-right: 14px; line-height: 1.9;
}
.answer dd { margin: 0; font-size: 15px; line-height: 1.85; }
@media (max-width: 560px) {
  .answer dl { grid-template-columns: 1fr; gap: 2px 0; }
  .answer dt { border-right: 0; padding-right: 0; margin-top: 12px; }
  .answer dd { padding-bottom: 6px; border-bottom: 1px solid var(--line); }
}

/* ---------- 引用・補足 ---------- */
.note {
  background: var(--wash); border-left: 3px solid var(--primary-soft);
  padding: 16px 20px; margin: 24px 0; border-radius: 0 8px 8px 0;
}
.note p { margin: 0 0 10px; font-size: 15px; }
.note p:last-child { margin-bottom: 0; }
.note .k {
  font-size: 11px; letter-spacing: .16em; color: var(--primary);
  margin: 0 0 8px; text-transform: uppercase;
}
.mine {
  background: var(--wash-accent); border-left: 3px solid var(--accent);
  padding: 16px 20px; margin: 24px 0; border-radius: 0 8px 8px 0;
}
.mine .k {
  font-size: 11px; letter-spacing: .16em; color: var(--accent); margin: 0 0 8px;
}
.mine p { margin: 0 0 10px; font-size: 15px; }
.mine p:last-child { margin-bottom: 0; }

/* ---------- 一覧カード ---------- */
.cards { display: grid; gap: 12px; margin: 22px 0; }
.card {
  display: block; text-decoration: none; color: inherit;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 18px 20px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--primary); transform: translateY(-1px); }
.card .k {
  display: block; font-size: 11px; letter-spacing: .18em;
  color: var(--ink-faint); margin-bottom: 6px;
}
.card .t { display: block; font-size: 17px; margin-bottom: 6px; }
.card .d { display: block; font-size: 14px; color: var(--ink-soft); line-height: 1.8; }

/* ---------- 比較表 ---------- */
.tablewrap { overflow-x: auto; margin: 24px 0; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 14px; }
th, td {
  border-bottom: 1px solid var(--line); padding: 12px 14px;
  text-align: left; vertical-align: top; line-height: 1.8;
}
th {
  font-family: "Noto Serif JP", serif; font-weight: 600;
  color: var(--primary); font-size: 13px; white-space: nowrap;
}
tbody th { color: var(--ink); }

/* ---------- pager ---------- */
.pager {
  display: flex; justify-content: space-between; gap: 16px;
  border-top: 1px solid var(--line); padding: 26px 0 8px; flex-wrap: wrap;
}
.pager a { text-decoration: none; font-size: 14px; max-width: 46%; }
.pager .k { display: block; font-size: 11px; color: var(--ink-faint); letter-spacing: .12em; }

/* ---------- sitemap / footer ---------- */
.sitemap { border-top: 1px solid var(--line); padding: 32px 0 8px; }
.sitemap .k {
  font-size: 11px; letter-spacing: .18em; color: var(--ink-faint); margin: 0 0 10px;
}
.sitemap ul { list-style: none; margin: 0 0 22px; padding: 0; }
.sitemap li { margin-bottom: 7px; }
.sitemap a { font-size: 14px; text-decoration: none; }
.sitemap a:hover { text-decoration: underline; }

.foot { border-top: 1px solid var(--line); margin-top: 20px; }
.foot .wrap { padding-top: 26px; padding-bottom: 40px; }
.foot p { font-size: 13px; color: var(--ink-faint); margin: 0 0 10px; line-height: 1.85; }
.foot a { color: var(--ink-soft); text-decoration: none; }
.foot a:hover { color: var(--primary); }

@media (max-width: 560px) {
  .hero { padding: 44px 0 30px; }
  .hero h1 { font-size: 24px; }
  .ch h2 { font-size: 19px; }
}

/* ---------- 図解 ---------- */
.diagram { width: 100%; height: auto; display: block; margin: 8px 0 4px; }
.diagram .box { fill: var(--paper); stroke: var(--line); stroke-width: 1; }
.diagram .ring { fill: var(--wash); stroke: var(--primary-soft); stroke-width: 1.5; }
.diagram .core { fill: var(--primary); }
.diagram .flow { stroke: var(--primary-soft); stroke-width: 1.5; fill: none; }
.diagram .head { fill: var(--primary-soft); }
.diagram text { font-size: 12px; fill: var(--ink-soft); }
.diagram .lbl {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 600; font-size: 14px; fill: var(--ink);
}
.diagram .big {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 600; font-size: 26px; fill: var(--primary);
}
.diagram .k { font-size: 10px; fill: var(--ink-faint); letter-spacing: .14em; }
.diagram .on-core { fill: var(--paper); }

/* ---------- 本文中の原文引用 ---------- */
.sutra {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 18px 20px; margin: 24px 0;
}
.sutra p { margin: 0 0 8px; }
.sutra p:last-child { margin-bottom: 0; }
.sutra .gen {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 17px; line-height: 1.9; letter-spacing: .04em;
}
.sutra .yomi { font-size: 13px; color: var(--ink-faint); }
.sutra .yaku { font-size: 15px; color: var(--ink-soft); }

@media (max-width: 560px) {
  .diagram .sub { display: none; }
  .diagram text { font-size: 15px; }
  .diagram .lbl { font-size: 16px; }
  .diagram .big { font-size: 30px; }
  .diagram .k { font-size: 13px; }
  .sutra .gen { font-size: 16px; }
}

/* ---------- 用語集 ---------- */
.jump { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0 4px; }
.jump a {
  font-size: 13px; text-decoration: none; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: var(--r-pill);
  padding: 4px 14px; background: var(--paper);
  transition: border-color .15s ease, color .15s ease;
}
.jump a:hover { border-color: var(--primary); color: var(--primary); }

.gloss { margin: 8px 0 0; }
.gloss dt {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 600; font-size: 16px; color: var(--ink);
  margin-top: 22px; padding: 4px 10px; margin-left: -10px;
  border-radius: 6px 6px 0 0; scroll-margin-top: 20px;
}
.gloss dt .yomi {
  font-family: "Noto Sans JP", sans-serif; font-weight: 400;
  font-size: 12px; color: var(--ink-faint); letter-spacing: .06em; margin-left: 10px;
}
.gloss dd {
  margin: 0; font-size: 15px; color: var(--ink-soft); line-height: 1.85;
  padding: 0 10px 2px; margin-left: -10px; border-radius: 0 0 6px 6px;
}
.gloss dt:target { color: var(--accent); background: var(--wash-accent); }
.gloss dt:target + dd { background: var(--wash-accent); padding-bottom: 10px; }

/* ---------- 本文中の用語リンク ---------- */
a.gl {
  color: inherit;
  text-decoration: underline dotted var(--primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}
a.gl:hover {
  color: var(--primary);
  text-decoration: underline solid var(--primary);
  text-underline-offset: 5px;
}
strong a.gl, a.gl strong { color: inherit; }