:root {
  color-scheme: light;
  --ink: #25342f;
  --muted: #596961;
  --green: #28594e;
  --line: #dedfd7;
  --paper: #fff;
  --soft: #f3f3ec;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; line-break: strict; word-break: normal; overflow-wrap: normal; }
body { margin: 0; background: #f6f5f0; color: var(--ink); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--green); outline-offset: 5px; }
a:hover { color: var(--green); }
.skip { position: fixed; top: 8px; left: 12px; transform: translateY(-180%); background: #fff; padding: 12px; z-index: 10; }
.skip:focus { transform: none; }
.header { background: var(--paper); border-top: 4px solid var(--green); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1160px; margin: auto; min-height: 114px; padding: 22px 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: 40px; line-height: 1.2; font-weight: 700; letter-spacing: .1em; }
.brand img { width: 29px; height: 29px; border-radius: 8px; }
.header nav { display: flex; gap: 30px; font-size: 13px; font-weight: 600; color: var(--ink); }
.header nav a[aria-current=page] { color: var(--green); }
.page-frame { max-width: 1160px; margin: auto; padding: 44px 32px 80px; display: grid; grid-template-columns: minmax(0, 1fr) 280px; align-items: start; gap: 48px; }
.content-main { min-width: 0; background: var(--paper); border: 0; border-radius: 0; }
.page { padding: 34px; }
.feed-heading { margin-bottom: 29px; }
.feed-heading h1 { margin: 0 0 12px; font-size: 25px; font-weight: 700; letter-spacing: .06em; }
.feed-heading p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.tabs { display: flex; align-items: stretch; gap: 26px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.tab { position: relative; padding: 0 0 15px; border: 0; background: transparent; color: var(--muted); font-size: 12px; font-weight: 600; cursor: pointer; }
.tab[aria-pressed=true] { color: var(--green); }
.tab[aria-pressed=true]:after { content: ""; position: absolute; bottom: -1px; left: 0; right: 0; height: 3px; border-radius: 2px; background: var(--green); }
.feed { display: grid; gap: 0; scroll-margin-top: 24px; }
.card { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 25px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.card:first-child { padding-top: 0; }
.card:last-child { padding-bottom: 0; border-bottom: 0; }
.card[hidden] { display: none; }
.card-content { min-width: 0; }
.card-cover { display: block; align-self: start; aspect-ratio: 1.4; border-radius: 3px; overflow: hidden; background: var(--soft); }
.card-cover img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .2s; }
.card-cover:hover img { transform: scale(1.025); }
.card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 0 0 10px; font-size: 11px; color: var(--muted); }
.category { color: var(--green); font-weight: 600; }
.card h2 { margin: 0 0 13px; font-size: 21px; line-height: 1.7; letter-spacing: .015em; overflow-wrap: normal; text-wrap: wrap; }
.card-excerpt { margin: 0 0 19px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.byline { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; }
.byline img { display: none; }
.byline .date { margin-left: auto; font-variant-numeric: tabular-nums; }
.article { padding: 34px 36px 42px; }
.back { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 29px; font-size: 12px; color: var(--muted); }
.article-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 13px; font-size: 12px; }
.article h1 { margin: 0 0 23px; font-size: 32px; line-height: 1.65; font-weight: 700; letter-spacing: .02em; overflow-wrap: normal; text-wrap: wrap; }
.article .byline { margin-bottom: 24px; padding-bottom: 0; border: 0; font-size: 13px; }
.article .byline img { width: 28px; height: 28px; }
.article-cover { display: block; width: 100%; height: auto; aspect-ratio: 3/1; object-fit: cover; margin-bottom: 32px; border-radius: 3px; }
.article-body { font-size: 16px; line-height: 2.1; letter-spacing: .02em; overflow-wrap: normal; }
.article-body p { margin: 0 0 1.6em; }
.article-body h2 { margin: 2.35em 0 1.1em; font-size: 21px; font-weight: 700; line-height: 1.8; letter-spacing: .015em; }
.article-body ul { margin: 0 0 1.6em; padding-left: 1.35em; }
.article-body li { padding-left: .2em; margin-bottom: .85em; }
.article-body a, .sources a { color: var(--green); text-decoration: underline; text-decoration-color: #b5cfc4; text-underline-offset: 4px; }
.sources { margin-top: 44px; padding: 24px; border-top: 2px solid #7b9287; background: #f5f5ee; font-size: 13px; line-height: 1.9; color: var(--muted); overflow-wrap: normal; scroll-margin-top: 24px; }
.sources h2 { margin: 0 0 13px; color: var(--ink); font-size: 14px; }
.sources p { margin: 4px 0; }
.related { margin-top: 34px; padding: 22px 0 0; border-top: 1px solid var(--line); background: transparent; border-radius: 0; }
.related-label { display: block; margin-bottom: 9px; color: var(--muted); font-size: 11px; }
.related a { font-size: 15px; font-weight: 600; line-height: 1.8; }
.related a:after { content: " →"; color: var(--green); }
.sidebar { display: grid; gap: 34px; min-width: 0; }
.sidebar-about { padding: 25px; border: 0; border-top: 3px solid var(--green); border-radius: 0; background: #eaf0e7; }
.sidebar-brand { display: inline-block; font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: 29px; line-height: 1.4; font-weight: 700; letter-spacing: .08em; }
.sidebar-brand img { border-radius: 8px; }
.sidebar-about p { margin: 17px 0 22px; font-size: 14px; line-height: 1.95; color: #3c574b; }
.sidebar-about-link { display: flex; justify-content: space-between; gap: 15px; padding-top: 16px; border-top: 1px solid #c9d8ca; color: #245447; font-size: 13px; font-weight: 600; }
.sidebar-section { min-width: 0; background: transparent; border: 0; border-radius: 0; }
.sidebar-section h2 { margin: 0; padding: 0 0 15px; border-bottom: 2px solid #7b9287; font-size: 14px; font-weight: 700; letter-spacing: .04em; }
.sidebar-articles { padding: 0; }
.sidebar-article { display: grid; grid-template-columns: 72px minmax(0, 1fr); align-items: start; gap: 13px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.sidebar-article:last-child { border-bottom: 0; }
.sidebar-article img { display: block; width: 72px; height: 54px; border-radius: 4px; object-fit: cover; background: var(--soft); }
.sidebar-category { display: block; margin-bottom: 7px; color: var(--green); font-size: 11px; }
.sidebar-article-title { display: block; font-size: 14px; font-weight: 600; line-height: 1.8; overflow-wrap: normal; }
.sidebar-article time { display: block; margin-top: 9px; color: var(--muted); font-size: 11px; }
.sidebar-categories { padding: 0; }
.sidebar-categories a { display: flex; justify-content: space-between; align-items: center; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.sidebar-categories a:last-child { border-bottom: 0; }
.sidebar-categories a[aria-current] { color: var(--green); font-weight: 700; }
.sidebar-categories a span:last-child { color: var(--green); }
.about { padding: 36px; }
.about h1 { margin: 0 0 30px; font-size: 30px; letter-spacing: .04em; }
.about h2 { margin: 36px 0 14px; font-size: 19px; }
.about p { margin: 0 0 1.6em; font-size: 15px; line-height: 2.1; }
.about .back { margin-top: 20px; margin-bottom: 0; }
main.about:not(.content-main) { max-width: 700px; margin: 50px auto; }
.footer { border-top: 1px solid var(--line); background: var(--paper); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 26px; max-width: 1160px; margin: auto; padding: 30px 32px; color: var(--muted); font-size: 12px; }
.footer a { font-weight: 600; }
.footer-links { font-size: 12px; line-height: 1.8; display: flex; flex-wrap: wrap; gap: 12px 20px; margin-left: auto; }
.footer-inner { flex-wrap: wrap; }
.footer-inner > span { flex-basis: 100%; }
.legal-page h1 { overflow-wrap: anywhere; }
.legal-page a { color: var(--green); text-decoration: underline; text-underline-offset: .2em; overflow-wrap: anywhere; }
.contact-details { margin-top: 38px; padding-top: 1px; border-top: 1px solid var(--line); }
.contact-details p { margin-bottom: .8em; }
.legal-page .policy-date { color: var(--muted); font-size: 12px; margin-top: 32px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (min-width: 960px) and (max-width: 1100px) {
  .page-frame { gap: 28px; grid-template-columns: minmax(0, 1fr) 264px; }
  .page, .article, .about { padding: 28px; }
  .card { grid-template-columns: 168px minmax(0, 1fr); gap: 20px; }
  .card h2 { font-size: 18px; }
  .article h1 { font-size: 29px; }
}
@media (max-width: 959px) {
  .page-frame { max-width: 800px; grid-template-columns: minmax(0, 1fr); gap: 32px; padding-top: 32px; }
  .sidebar { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .sidebar-about { grid-column: 1/-1; }
}
@media (max-width: 600px) {
  body { background: var(--paper); }
  .header-inner { min-height: 68px; padding: 0 21px; gap: 12px; }
  .brand { font-size: 20px; gap: 8px; }
  .brand img { width: 26px; height: 26px; border-radius: 8px; }
  .header nav { gap: 17px; font-size: 11px; }
  .page-frame { display: grid; gap: 38px; padding: 28px 22px 48px; }
  .content-main { border: 0; border-radius: 0; }
  .page, .article, .about { padding: 0; }
  .feed-heading { margin-bottom: 25px; }
  .feed-heading h1 { margin-bottom: 10px; font-size: 25px; }
  .feed-heading p { font-size: 12px; }
  .tabs { gap: 23px; margin-bottom: 26px; }
  .tab { font-size: 11px; padding-bottom: 14px; }
  .card { grid-template-columns: minmax(0, 1fr); gap: 17px; padding: 27px 0; }
  .card-cover { aspect-ratio: 960/504; }
  .card h2 { font-size: 21px; }
  .card-excerpt { font-size: 13px; }
  .back { margin-bottom: 25px; }
  .article h1 { font-size: 26px; }
  .article .byline { margin-bottom: 23px; padding-bottom: 18px; }
  .article-cover { margin-bottom: 27px; }
  .article-body { font-size: 16px; letter-spacing: .015em; }
  .article-body h2 { font-size: 20px; }
  .sidebar { grid-template-columns: minmax(0, 1fr); gap: 22px; border-top: 1px solid var(--line); padding-top: 34px; }
  .sidebar-about { grid-column: auto; }
  .related { padding: 20px; }
  .about h1 { font-size: 25px; }
  .footer-inner { padding: 25px 22px; font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card-cover img { transition: none; }
}

.masthead { min-width: 0; }
.brand-description { margin: 8px 0 0 42px; font-size: 11px; line-height: 1.6; color: var(--muted); letter-spacing: .09em; }
.author-link { color: var(--green); font-weight: 600; text-decoration: underline; text-decoration-color: #b3c5b6; text-underline-offset: 4px; }
.sidebar-about .sidebar-overline { margin: 0 0 14px; color: #486253; font-size: 11px; line-height: 1.6; letter-spacing: .06em; }
.about .about-overline { margin: 0 0 13px; color: var(--green); font-size: 12px; letter-spacing: .06em; }
.about .about-preview { margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.footer-about { margin-left: auto; }
.footer-brand { font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: 21px; color: var(--ink); letter-spacing: .08em; }
@media (max-width: 600px) {
  .header-inner { display: block; min-height: 0; padding: 22px 22px 0; }
  .brand { font-size: 31px; gap: 10px; }
  .brand img { width: 25px; height: 25px; }
  .brand-description { margin: 7px 0 0 36px; font-size: 10px; }
  .header nav { gap: 27px; margin-top: 20px; padding: 13px 0; border-top: 1px solid var(--line); font-size: 12px; }
  .page-frame { padding-top: 29px; }
  .feed-heading p { font-size: 13px; }
  .card { gap: 18px; }
  .card-cover { aspect-ratio: 2/1; }
  .card h2 { font-size: 22px; }
  .card-excerpt { font-size: 14px; }
  .article h1 { font-size: 27px; }
  .article .byline { margin-bottom: 24px; padding-bottom: 0; }
  .article-cover { aspect-ratio: 2.5/1; margin-bottom: 28px; }
  .sources { padding: 20px; }
  .sidebar { gap: 30px; }
  .footer-inner { flex-wrap: wrap; gap: 18px 24px; }
  .footer-inner > span { flex-basis: 100%; }
}

.byline time, .sidebar-article time { white-space: nowrap; }
.author-comment { margin: 34px 0 0; padding: 24px; border-left: 3px solid #7b9287; background: #f3f5ee; }
.author-comment-heading { display: flex; align-items: center; gap: 12px; }
.author-comment-heading img { flex: none; border-radius: 9px; }
.author-comment-heading h2 { margin: 0 0 4px; color: var(--ink); font-size: 14px; line-height: 1.7; }
.author-comment-heading a { color: var(--muted); font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
.author-comment p { margin: 18px 0 0; font-size: 15px; line-height: 2; }
.related .related-label { font-size: 13px; color: var(--ink); font-weight: 600; margin-bottom: 18px; }
.related .related-article { display: grid; grid-template-columns: 112px minmax(0, 1fr); align-items: start; gap: 20px; }
.related .related-article:after { content: none; }
.related-article > img { display: block; width: 112px; height: 78px; object-fit: cover; border-radius: 3px; }
.related-category { display: block; margin-bottom: 8px; font-size: 11px; font-weight: 400; color: var(--green); }
.related-title { display: block; font-size: 16px; line-height: 1.8; }
.related-action { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 600px) {
  .author-comment { padding: 21px; }
  .related .related-article { grid-template-columns: 88px minmax(0, 1fr); gap: 16px; }
  .related-article > img { width: 88px; height: 66px; }
  .related-title { font-size: 15px; }
}


/* 記事画像 */
.article-figure { margin: 0 0 30px; }
.article-figure .article-cover { margin-bottom: 0; }

.article-disclosure { margin: 0 0 24px; font-size: 13px; line-height: 1.8; color: #486253; }
.article-disclosure-ad { padding: 14px 16px; border-left: 3px solid var(--green); background: #f2f5ee; color: var(--ink); }

.legal-page .contact-button { display: inline-block; padding: 12px 18px; border: 1px solid var(--green); background: var(--green); color: #fff; font-size: 14px; font-weight: 600; line-height: 1.6; text-decoration: none; }
.contact-button:hover { opacity: .85; }
.contact-form-note { display: block; margin-top: 12px; font-size: 12px; color: var(--muted); }