:root {
  color-scheme: light;
  --canvas: #f6f3ea;
  --surface: #fffefa;
  --soft: #e8f0e8;
  --ink: #1f2a23;
  --muted: #536157;
  --brand: #27633e;
  --brand-strong: #17482c;
  --accent: #d99b2b;
  --focus: #17482c;
  --border: #788e7d;
  --reading: 45rem;
  --wide: 72rem;
  --radius-sm: .5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --shadow: 0 .8rem 2rem rgba(31, 42, 35, .08);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.75;
  overflow-wrap: anywhere;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--brand-strong); text-decoration-thickness: .09em; text-underline-offset: .22em; }
a:hover { text-decoration-thickness: .15em; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
[id] { scroll-margin-top: 1.5rem; }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: .75rem;
  left: .75rem;
  padding: .7rem 1rem;
  min-height: 44px;
  background: var(--brand-strong);
  color: #fff;
  border-radius: var(--radius-sm);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.site-header__inner {
  width: min(calc(100% - 2rem), var(--wide));
  margin-inline: auto;
  padding-block: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.site-brand {
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: center;
  gap: .75rem;
  color: var(--ink);
  text-decoration: none;
  min-height: 48px;
}
.site-brand img { width: 3rem; height: 3rem; }
.site-brand__name { display: block; font-size: 1.25rem; font-weight: 800; line-height: 1.2; letter-spacing: .02em; }
.site-brand__tagline { display: block; margin-top: .2rem; color: var(--muted); font-size: .78rem; line-height: 1.45; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: .3rem; margin: 0; padding: 0; list-style: none; }
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .55rem .75rem;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: .92rem;
  font-weight: 700;
  text-decoration: none;
}
.site-nav a:hover { background: var(--soft); }
.site-nav a[aria-current="page"] { background: var(--brand); color: #fff; }

.page-main { width: min(calc(100% - 2rem), var(--reading)); margin-inline: auto; padding-block: 2.5rem 5rem; }
.page-main--home { width: min(calc(100% - 2rem), var(--wide)); }
.page-main--article { width: min(calc(100% - 2rem), var(--reading)); }
.page-main--fixed { min-height: 55vh; }
h1, h2, h3 { line-height: 1.35; letter-spacing: .01em; text-wrap: pretty; }
h1 { margin: 0 0 1rem; font-size: clamp(2rem, 4.8vw, 3.4rem); }
h2 { margin: 2.6rem 0 1rem; font-size: clamp(1.55rem, 3vw, 2.1rem); }
h3 { margin: 1.5rem 0 .6rem; font-size: 1.22rem; }
p, ul, ol, dl { margin-block: 0 1.2rem; }

.eyebrow { margin-bottom: .6rem; color: var(--brand); font-size: .86rem; font-weight: 800; letter-spacing: .08em; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .7rem 1.15rem;
  border: 2px solid var(--brand-strong);
  border-radius: var(--radius-sm);
  background: var(--brand-strong);
  color: #fff;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}
.button:hover { background: var(--brand); }
.text-link { display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(17rem, .92fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  padding-block: clamp(1.5rem, 5vw, 4rem);
}
.hero h1 { max-width: 12em; }
.hero__lead { max-width: 37rem; color: var(--muted); font-size: 1.15rem; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.1rem; }
.hero__visual { max-width: 32rem; margin-inline: auto; }
.hero__visual img { width: 100%; height: auto; aspect-ratio: 640 / 520; }

.section-heading { max-width: 42rem; }
.section-heading p { color: var(--muted); }
.principle-grid, .source-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.principle-card, .latest-card, .source-card, .trust-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.principle-card { padding: 1.35rem; }
.principle-card__number {
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border-radius: 50%;
  background: var(--soft);
  color: var(--brand-strong);
  font-weight: 900;
}
.principle-card h3 { margin-top: .9rem; }
.principle-card p { color: var(--muted); }

.latest-section { margin-top: 4.5rem; }
.latest-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 1.5rem; padding: clamp(1.4rem, 4vw, 2.2rem); border-top: .4rem solid var(--brand); }
.latest-card h2 { margin: .45rem 0 .75rem; font-size: clamp(1.5rem, 3vw, 2rem); }
.latest-card__meta { color: var(--muted); font-size: .92rem; }
.trust-panel { margin-top: 4rem; padding: clamp(1.4rem, 4vw, 2.3rem); background: var(--soft); box-shadow: none; }
.trust-panel h2 { margin-top: 0; }
.trust-links { display: flex; flex-wrap: wrap; gap: .7rem 1.5rem; }

.breadcrumb { margin-bottom: 1.5rem; color: var(--muted); font-size: .9rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.breadcrumb li + li::before { content: "/"; margin-right: .35rem; color: var(--border); }
.fixed-page { padding: clamp(1.3rem, 4vw, 2.2rem); border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.fixed-page h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); }
.fixed-page__lead { color: var(--muted); font-size: 1.12rem; }
.fixed-page li + li { margin-top: .7rem; }

.article { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(1.25rem, 5vw, 3.25rem); box-shadow: var(--shadow); }
.article-header { margin-block: 1.5rem 2.2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.article-header h1 { font-size: clamp(2rem, 4.6vw, 3rem); }
.article-lede { color: var(--muted); font-size: 1.12rem; }
.article-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem 1.5rem; margin-top: 1.5rem; }
.article-meta div { display: grid; grid-template-columns: 6rem 1fr; gap: .5rem; }
.article-meta dt { color: var(--muted); font-size: .88rem; font-weight: 700; }
.article-meta dd { margin: 0; font-size: .92rem; }
.notice, .answer-box, .toc { margin-block: 1.5rem; padding: 1.15rem 1.25rem; border-radius: var(--radius-md); }
.notice { border: 1px solid var(--border); background: var(--canvas); }
.notice--ad { border-left: .4rem solid var(--accent); font-size: .94rem; }
.notice--caution { border-left: .4rem solid var(--accent); }
.answer-box { border: 2px solid var(--brand); background: var(--soft); }
.answer-box__label, .status { display: inline-block; color: var(--brand-strong); font-size: .82rem; font-weight: 900; letter-spacing: .05em; }
.answer-box h2 { margin: .45rem 0 .75rem; font-size: 1.45rem; }
.answer-box p:last-child, .notice p:last-child { margin-bottom: 0; }
.toc { border: 1px solid var(--border); background: var(--surface); }
.toc__title { display: block; margin-bottom: .45rem; font-weight: 900; }
.toc ol { margin-bottom: 0; padding-left: 1.4rem; }
.toc li + li { margin-top: .35rem; }
.article-section { margin-top: 3.2rem; }
.article-section > h2 { padding-bottom: .55rem; border-bottom: .22rem solid var(--soft); }

.table-hint { margin-bottom: .45rem; color: var(--muted); font-size: .86rem; }
.table-wrap { overflow-x: auto; margin-block: .5rem 1.6rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
table { width: 100%; min-width: 44rem; border-collapse: collapse; font-size: .94rem; }
caption { padding: .9rem 1rem; background: var(--soft); font-weight: 800; text-align: left; }
th, td { padding: .8rem .9rem; border: 1px solid var(--border); vertical-align: top; text-align: left; }
thead th { background: var(--brand-strong); color: #fff; }
tbody th { background: var(--soft); }

.source-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1.5rem; }
.source-card { padding: 1.25rem; box-shadow: none; }
.source-card h3 { margin-top: 0; }
.fact-list div { padding-block: .55rem; border-top: 1px solid var(--border); }
.fact-list dt { color: var(--muted); font-size: .83rem; font-weight: 800; }
.fact-list dd { margin: .1rem 0 0; }
.source-card__link { display: inline-flex; align-items: center; min-height: 44px; font-weight: 800; }
.source-card__meta { margin-bottom: 0; }
.status--unknown { padding: .25rem .55rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); }
.correction-note { padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--canvas); }
.correction-note h2 { margin-top: 0; }

.site-footer { border-top: 1px solid var(--border); background: var(--brand-strong); color: #fff; }
.site-footer__inner { width: min(calc(100% - 2rem), var(--wide)); margin-inline: auto; padding-block: 2rem; }
.site-footer__brand { font-weight: 900; }
.site-footer nav ul { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; padding: 0; list-style: none; }
.site-footer a { color: #fff; }
.site-footer small { color: #e8f0e8; }

@media (max-width: 860px) {
  .site-header__inner { align-items: flex-start; flex-direction: column; gap: .7rem; }
  .site-nav { width: 100%; }
  .site-nav ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-nav a { border: 1px solid var(--border); }
  .hero { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 23rem; }
  .principle-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  body { font-size: 1rem; }
  .site-brand__tagline { display: none; }
  .page-main { width: min(calc(100% - 1rem), var(--reading)); padding-block: 1.5rem 3.5rem; }
  .hero { padding-top: .5rem; }
  .hero__actions, .latest-card { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .article { padding: 1rem; border-radius: var(--radius-md); }
  .article-meta { grid-template-columns: 1fr; }
  .article-meta div { grid-template-columns: 5.4rem 1fr; }
  .source-grid { grid-template-columns: 1fr; }
  .site-footer nav ul { display: grid; grid-template-columns: 1fr 1fr; }
}

@media print {
  body { background: #fff; }
  .skip-link, .site-nav, .hero__actions, .site-footer { display: none; }
  .article, .principle-card, .latest-card { box-shadow: none; }
}