:root {
  --ink: #1d252c;
  --navy: #243b4a;
  --navy-dark: #172832;
  --muted: #687177;
  --line: #d8d8d3;
  --soft-line: #e8e7e1;
  --warm: #f3f0e8;
  --paper: #fbfaf7;
  --white: #fff;
  --accent: #9c3f32;
  --serif: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.9; }
body.menu-is-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.wrap { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.wrap--narrow { width: min(800px, calc(100% - 48px)); }
.section { padding: 96px 0; }
.section--compact { padding-top: 76px; padding-bottom: 88px; }
.screen-reader-text, .skip-link { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link:focus { width: auto; height: auto; clip: auto; padding: 10px 16px; z-index: 9999; background: var(--white); }
.kicker { margin: 0 0 14px; color: var(--accent); font-size: .78rem; font-weight: 700; letter-spacing: .08em; }
.plain-link { display: inline-block; padding-bottom: 3px; border-bottom: 1px solid currentColor; color: var(--navy); font-weight: 700; }

.site-header { position: relative; z-index: 50; background: var(--paper); border-top: 4px solid var(--navy-dark); border-bottom: 1px solid var(--line); }
.site-header__main { width: min(1380px, calc(100% - 48px)); min-height: 104px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.site-brand { display: inline-flex; flex: 0 0 auto; min-width: 390px; flex-direction: column; line-height: 1.2; }
.site-brand__name { color: var(--navy-dark); font-family: var(--serif); font-size: clamp(1.25rem, 2.1vw, 1.6rem); font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.site-brand__description { margin-top: 8px; color: var(--muted); font-size: .67rem; font-weight: 600; letter-spacing: .1em; }
.primary-nav ul { display: flex; align-items: center; justify-content: flex-end; gap: clamp(16px, 1.7vw, 26px); margin: 0; padding: 0; list-style: none; }
.primary-nav a { padding: 8px 0; border-bottom: 1px solid transparent; font-size: .86rem; font-weight: 700; white-space: nowrap; }
.primary-nav a:hover { border-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: none; padding: 10px; }
.menu-toggle > span:not(.screen-reader-text) { display: block; height: 1px; margin: 6px 0; background: var(--navy-dark); }
.breadcrumbs { border-bottom: 1px solid var(--soft-line); color: var(--muted); font-size: .75rem; }
.breadcrumbs .wrap { min-height: 42px; display: flex; gap: 9px; align-items: center; overflow: hidden; white-space: nowrap; }

.home-intro { padding: 106px 0 92px; border-bottom: 1px solid var(--line); }
.home-intro__grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(340px, .65fr); gap: 90px; align-items: end; }
.home-intro h1 { max-width: 800px; margin: 0; color: var(--navy-dark); font-family: var(--serif); font-size: clamp(2.5rem, 5.2vw, 4.7rem); font-weight: 600; line-height: 1.42; letter-spacing: -.045em; }
.home-intro__lead { max-width: 750px; margin: 34px 0 0; color: #4f595f; font-size: 1rem; line-height: 2.05; }
.home-intro__search { padding-top: 26px; border-top: 3px solid var(--navy); }
.home-intro__search > p { margin: 0 0 13px; color: var(--navy-dark); font-family: var(--serif); font-size: 1.12rem; font-weight: 700; }
.site-search { display: flex; border: 1px solid #abb1b4; background: var(--white); }
.site-search input { min-width: 0; flex: 1; min-height: 54px; padding: 0 16px; border: 0; outline: 0; background: transparent; }
.site-search input:focus { box-shadow: inset 0 0 0 2px var(--navy); }
.site-search button { width: 72px; border: 0; background: var(--navy); color: var(--white); font-weight: 700; cursor: pointer; }
.search-suggestions { display: flex; flex-wrap: wrap; gap: 7px 13px; margin-top: 15px; font-size: .72rem; }
.search-suggestions span { width: 100%; color: var(--muted); }
.search-suggestions a { color: var(--navy); text-decoration: underline; text-underline-offset: 4px; }

.section-title { display: flex; justify-content: space-between; align-items: baseline; gap: 40px; margin-bottom: 34px; }
.section-title h2, .first-aid h2 { margin: 0; color: var(--navy-dark); font-family: var(--serif); font-size: clamp(1.9rem, 3.5vw, 2.7rem); font-weight: 600; line-height: 1.55; }
.section-title p { margin: 0; color: var(--muted); font-size: .9rem; }
.section-title a { color: var(--navy); font-size: .8rem; font-weight: 700; }
.section-title--line { padding-bottom: 20px; border-bottom: 2px solid var(--navy-dark); }
.topic-index { background: var(--white); }
.topic-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.topic-list a { min-height: 122px; display: grid; grid-template-columns: 130px 1fr 28px; align-items: center; gap: 24px; padding: 24px 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .15s; }
.topic-list a:hover { background: var(--warm); }
.topic-list__label { color: var(--accent); font-family: var(--serif); font-size: 1.12rem; font-weight: 700; }
.topic-list strong { color: #4a5358; font-size: .84rem; font-weight: 500; }
.topic-list__arrow { color: var(--navy); font-size: 1.2rem; }

.latest { border-top: 1px solid var(--soft-line); }
.coming-list { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; padding: 42px 0 0; }
.coming-list__lead > span { display: inline-block; margin-bottom: 16px; padding: 2px 8px; border: 1px solid var(--muted); color: var(--muted); font-size: .68rem; }
.coming-list__lead h3 { margin: 0 0 18px; font-family: var(--serif); font-size: 1.6rem; line-height: 1.65; }
.coming-list__lead p { margin: 0; color: var(--muted); font-size: .9rem; }
.coming-list__items { border-top: 1px solid var(--line); }
.coming-list__items p { display: grid; grid-template-columns: 76px 1fr; gap: 18px; margin: 0; padding: 20px 0; border-bottom: 1px solid var(--line); font-family: var(--serif); font-weight: 700; }
.coming-list__items span { color: var(--muted); font-family: var(--sans); font-size: .67rem; font-weight: 500; }

.first-aid { background: var(--warm); border-block: 1px solid var(--line); }
.first-aid__grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; }
.first-aid__list { margin: 0; padding: 0; border-top: 1px solid #c8c4bb; list-style: none; }
.first-aid__list li { display: grid; grid-template-columns: 44px 1fr; gap: 24px; padding: 25px 0; border-bottom: 1px solid #c8c4bb; }
.first-aid__list li > span { color: var(--accent); font-family: var(--serif); font-size: 1.25rem; }
.first-aid__list h3 { margin: 0 0 6px; color: var(--navy-dark); font-family: var(--serif); font-size: 1.16rem; }
.first-aid__list p { margin: 0; color: var(--muted); font-size: .88rem; }

.expert-note { background: var(--navy-dark); color: #e8ecee; }
.expert-note__inner { display: grid; grid-template-columns: 310px 1fr; gap: 90px; }
.expert-note__heading { padding-right: 55px; border-right: 1px solid rgba(255,255,255,.25); }
.expert-note__heading > span { display: block; margin-bottom: 32px; color: #bbc5ca; font-size: .74rem; letter-spacing: .18em; }
.expert-note__heading h2 { margin: 0; font-family: var(--serif); font-size: 2rem; font-weight: 600; letter-spacing: .08em; }
.expert-note__heading p { margin: 10px 0 0; color: #aeb9bf; font-size: .78rem; }
.expert-note__body h3 { margin: 0 0 20px; font-family: var(--serif); font-size: clamp(1.45rem, 3vw, 2rem); font-weight: 600; line-height: 1.65; }
.expert-note__body > p { max-width: 710px; color: #c3ccd0; font-size: .9rem; }
.expert-note__body ul { display: flex; flex-wrap: wrap; gap: 0; margin: 27px 0 30px; padding: 0; list-style: none; color: #d7dddf; font-size: .75rem; }
.expert-note__body li { padding: 0 16px; border-left: 1px solid rgba(255,255,255,.3); }
.expert-note__body li:first-child { padding-left: 0; border-left: 0; }
.expert-note .plain-link { color: var(--white); font-size: .82rem; }

.editorial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; }
.article-card { display: grid; grid-template-columns: 180px 1fr; min-height: 172px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.article-card:nth-child(-n+2) { border-top: 1px solid var(--line); }
.article-card__media { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: #e7e4dc; }
.article-card__media img { width: 100%; height: 100%; object-fit: cover; }
.article-card__placeholder { width: 100%; height: 100%; display: grid; place-items: center; color: var(--muted); font-family: var(--serif); font-size: .8rem; }
.article-card__body { padding-left: 20px; }
.article-card__category { display: inline-block; margin-bottom: 7px; color: var(--accent); font-size: .68rem; font-weight: 700; }
.article-card__title { margin: 0 0 7px; font-family: var(--serif); font-size: 1.05rem; line-height: 1.65; }
.article-card__body p { display: none; }
.article-card__body time { color: var(--muted); font-size: .67rem; }

.footer-guide { padding: 52px 0; background: var(--white); border-top: 1px solid var(--line); }
.footer-guide__inner { display: flex; justify-content: space-between; align-items: center; gap: 55px; }
.footer-guide h2 { margin: 0 0 7px; font-family: var(--serif); font-size: 1.5rem; }
.footer-guide p { max-width: 750px; margin: 0; color: var(--muted); font-size: .85rem; }
.footer-guide a { flex: 0 0 auto; padding-bottom: 4px; border-bottom: 1px solid var(--navy); color: var(--navy); font-size: .82rem; font-weight: 700; }
.site-footer { padding: 64px 0 24px; background: #101c23; color: #ccd3d6; }
.site-footer__top { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; padding-bottom: 46px; }
.site-brand--footer .site-brand__name { color: var(--white); }
.site-brand--footer .site-brand__description { color: #9ba9af; }
.site-footer__note { max-width: 520px; color: #9ba9af; font-size: .8rem; }
.footer-nav ul { columns: 2; margin: 0; padding: 0; list-style: none; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { font-size: .8rem; }
.site-footer__bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.16); color: #84959d; font-size: .68rem; }
.site-footer__bottom p { margin: 0; }

.archive-header { max-width: 800px; margin-bottom: 50px; padding-bottom: 26px; border-bottom: 2px solid var(--navy-dark); }
.archive-header h1, .article-header h1, .empty-state h1 { margin: 0; color: var(--navy-dark); font-family: var(--serif); font-size: clamp(2rem, 5vw, 3.3rem); font-weight: 600; line-height: 1.45; }
.archive-description { margin-top: 18px; color: var(--muted); }
.pagination { margin-top: 50px; }
.pagination .nav-links { display: flex; justify-content: center; gap: 8px; }
.pagination .page-numbers { min-width: 42px; min-height: 42px; display: grid; place-items: center; border: 1px solid var(--line); }
.pagination .current { background: var(--navy); color: var(--white); }
.empty-state { padding: 60px; text-align: center; background: var(--warm); }
.empty-state h2 { font-family: var(--serif); }

.content-layout { display: grid; grid-template-columns: minmax(0, 750px) 280px; gap: 75px; align-items: start; }
.article-header { margin-bottom: 32px; }
.article-header h1 { margin-top: 12px; }
.article-meta { display: flex; gap: 20px; margin-top: 20px; color: var(--muted); font-size: .72rem; }
.article-eyecatch { margin: 0 0 30px; }
.article-supervision { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-bottom: 38px; padding: 16px 0; border-block: 1px solid var(--line); }
.article-supervision span { color: var(--accent); font-size: .7rem; font-weight: 700; }
.article-supervision small { color: var(--muted); }
.entry-content { font-size: 1rem; }
.entry-content h2 { margin: 64px 0 22px; padding-bottom: 13px; border-bottom: 2px solid var(--navy); color: var(--navy-dark); font-family: var(--serif); font-size: 1.75rem; line-height: 1.55; }
.entry-content h3 { margin: 44px 0 16px; color: var(--navy); font-family: var(--serif); font-size: 1.3rem; }
.entry-content p { margin: 0 0 1.8em; }
.entry-content a { color: var(--navy); text-decoration: underline; text-underline-offset: 3px; }
.entry-content blockquote { margin: 36px 0; padding: 24px 28px; border-left: 3px solid var(--accent); background: var(--warm); }
.entry-content ul, .entry-content ol { margin-bottom: 1.8em; }
.entry-content table { width: 100%; border-collapse: collapse; margin: 32px 0; font-size: .9rem; }
.entry-content th, .entry-content td { padding: 12px; border: 1px solid var(--line); text-align: left; }
.entry-content th { background: var(--warm); }
.article-sidebar { position: sticky; top: 24px; }
.side-expert, .side-widget { margin-bottom: 24px; padding: 24px; border: 1px solid var(--line); }
.side-expert { border-top: 3px solid var(--navy); background: var(--white); }
.side-expert__label { color: var(--accent); font-size: .68rem; font-weight: 700; }
.side-expert h2 { margin: 8px 0; font-family: var(--serif); }
.side-expert p { color: var(--muted); font-size: .82rem; }
.side-expert a { color: var(--navy); font-size: .78rem; font-weight: 700; }
.side-widget__title { margin-top: 0; font-size: 1rem; }
.article-tags { margin-top: 45px; padding-top: 20px; border-top: 1px solid var(--line); font-size: .8rem; }
.article-tags span { margin-right: 12px; font-weight: 700; }
.article-tags a { margin-right: 10px; color: var(--navy); }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--line); font-size: .82rem; }
.post-nav a:last-child { text-align: right; }

@media (max-width: 1240px) {
  .site-header__main { min-height: 84px; }
  .menu-toggle { display: block; }
  .primary-nav { position: fixed; inset: 88px 0 0; display: none; padding: 30px; background: var(--paper); }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { display: block; }
  .primary-nav li { border-bottom: 1px solid var(--line); }
  .primary-nav a { display: block; padding: 16px 0; }
  .home-intro__grid { grid-template-columns: 1fr; gap: 55px; }
  .home-intro__search { max-width: 620px; }
  .topic-list { grid-template-columns: 1fr; }
  .coming-list { gap: 45px; }
  .first-aid__grid { grid-template-columns: 1fr; gap: 45px; }
  .expert-note__inner { grid-template-columns: 240px 1fr; gap: 55px; }
  .editorial-grid { grid-template-columns: 1fr; }
  .article-card:nth-child(2) { border-top: 0; }
  .content-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
}

@media (max-width: 680px) {
  .wrap, .wrap--narrow { width: min(100% - 30px, 1120px); }
  .section { padding: 64px 0; }
  .site-header { border-top-width: 3px; }
  .site-brand__description { display: none; }
  .home-intro { padding: 68px 0 60px; }
  .home-intro h1 { font-size: clamp(2.1rem, 11vw, 3.1rem); line-height: 1.5; }
  .home-intro__lead { margin-top: 24px; font-size: .9rem; }
  .home-intro__grid { gap: 40px; }
  .section-title { display: block; }
  .section-title p, .section-title a { display: block; margin-top: 10px; }
  .topic-list a { min-height: 112px; grid-template-columns: 1fr 24px; gap: 7px 14px; padding: 20px; }
  .topic-list__label { grid-column: 1; }
  .topic-list strong { grid-column: 1; }
  .topic-list__arrow { grid-column: 2; grid-row: 1 / 3; }
  .coming-list { grid-template-columns: 1fr; gap: 35px; padding-top: 20px; }
  .first-aid__list li { grid-template-columns: 32px 1fr; gap: 15px; }
  .expert-note__inner { grid-template-columns: 1fr; gap: 38px; }
  .expert-note__heading { padding: 0 0 30px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.25); }
  .expert-note__heading > span { margin-bottom: 18px; }
  .expert-note__body ul { display: block; }
  .expert-note__body li { padding: 5px 0; border-left: 0; }
  .article-card { grid-template-columns: 112px 1fr; min-height: 132px; }
  .article-card__body { padding-left: 14px; }
  .article-card__title { font-size: .94rem; }
  .footer-guide__inner { display: block; }
  .footer-guide a { display: inline-block; margin-top: 22px; }
  .site-footer__top { grid-template-columns: 1fr; gap: 35px; }
  .site-footer__bottom { display: block; }
  .site-footer__bottom p + p { margin-top: 8px; }
  .empty-state { padding: 42px 18px; }
  .article-meta { display: block; }
  .article-meta time { display: block; }
  .entry-content h2 { font-size: 1.5rem; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav a:last-child { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}