:root {
  --paper: #f8f2e6;
  --paper-deep: #efe3cb;
  --card: #fffdf8;
  --ink: #2b2119;
  --ink-soft: #5c4d3d;
  --wine: #5c2333;
  --wine-deep: #3c1622;
  --gold: #b07a2e;
  --gold-light: #e7c98c;
  --line: #ddccab;
  --muted: #8a7358;
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6.5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.95;
  letter-spacing: 0.02em;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--wine); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--gold); }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  background: var(--card);
  padding: 0.6rem 1.1rem;
  z-index: 999;
  border: 1px solid var(--line);
}
.skip-link:focus { top: 1rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 242, 230, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand-row {
  max-width: 1180px;
  min-height: 76px;
  margin: auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  color: var(--wine-deep);
  line-height: 1.25;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: linear-gradient(160deg, #fffdf8, var(--gold-light));
  font-size: 1.2rem;
  color: var(--wine-deep);
}
.brand strong {
  font-family: var(--serif);
  font-size: 1.12rem;
  letter-spacing: 0.06em;
}
.brand small {
  display: block;
  color: var(--muted, #8a7358);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  margin-top: 4px;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 40px;
  padding: 9px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 4px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--wine-deep);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.menu-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.is-active span:nth-child(2) { opacity: 0; }
.menu-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.global-nav { border-top: 1px solid var(--line); }
.global-nav ul {
  max-width: 1180px;
  margin: auto;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  list-style: none;
}
.global-nav a {
  display: block;
  padding: 11px 12px;
  color: var(--ink);
  font-size: 0.76rem;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}
.global-nav a:hover,
.global-nav a[aria-current="page"] {
  border-color: var(--gold);
  color: var(--wine);
}

/* ---------- Hero ---------- */
.hero-block {
  position: relative;
  max-width: 1440px;
  margin: auto;
  background: var(--wine-deep);
  min-height: 480px;
  display: grid;
  align-items: end;
  overflow: hidden;
}
.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-block::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30, 12, 18, 0.15) 0%, rgba(30, 12, 18, 0.55) 62%, rgba(30, 12, 18, 0.88) 100%);
}
.hero-copy {
  position: relative;
  z-index: 1;
  color: #fff8ec;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 80px 0 58px;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--gold-light);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.65);
}
.hero-copy h1 {
  font-family: var(--serif);
  font-size: clamp(2.05rem, 4.4vw, 3.8rem);
  line-height: 1.45;
  letter-spacing: 0.05em;
  margin: 0 0 20px;
  max-width: 900px;
  color: #fffaf0;
  text-shadow: 0 3px 20px rgba(0, 0, 0, 0.65), 0 1px 3px rgba(0, 0, 0, 0.9);
}
.hero-copy > p:last-child {
  max-width: 720px;
  font-size: 1.06rem;
  margin: 0;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

/* ---------- Layout ---------- */
.container { width: min(1120px, calc(100% - 48px)); margin: auto; }
.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 288px;
  gap: 60px;
  align-items: start;
  padding-top: 70px;
  padding-bottom: 92px;
}
.article { min-width: 0; }
.article > section { margin: 0 0 64px; }
.article h2 {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);
  line-height: 1.6;
  letter-spacing: 0.04em;
  margin: 0 0 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gold-light);
  position: relative;
}
.article h2::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 64px;
  height: 2px;
  background: var(--wine);
}
.article h3 { font-family: var(--serif); line-height: 1.6; color: var(--wine-deep); }
.article p { margin: 0 0 1.3em; }
.article ul, .article ol { margin: 0 0 1.3em; padding-left: 1.35rem; }
.article li { margin-bottom: 0.5em; }

/* ---------- Sidebar ---------- */
.sidebar { position: sticky; top: 148px; display: grid; gap: 22px; }
.sidebar nav, .ad-slot {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  box-shadow: 0 10px 26px -20px rgba(60, 22, 34, 0.55);
}
.sidebar h2 {
  font-family: var(--serif);
  font-size: 0.98rem;
  margin: 0 0 14px;
  color: var(--wine-deep);
}
.sidebar ol { margin: 0; padding-left: 1.2rem; }
.sidebar li + li { margin-top: 9px; }
.sidebar a { font-size: 0.83rem; }
.ad-slot span {
  display: block;
  color: var(--muted, #8a7358);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
  padding-bottom: 10px;
}
.ad-slot strong { display: block; font-family: var(--serif); line-height: 1.55; margin-bottom: 6px; }
.ad-slot p { font-size: 0.8rem; line-height: 1.7; }
.ad-slot > a {
  display: inline-block;
  background: var(--wine);
  color: #fff8ec;
  padding: 9px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.82rem;
}
.ad-slot > a:hover { background: var(--wine-deep); color: #fff8ec; }
.related-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.related-links a { font-size: 0.83rem; }

/* ---------- Related / cards ---------- */
.related { border-top: 1px solid var(--line); padding-top: 54px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.related-grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
}
.related-grid h3 { font-size: 1rem; margin: 0 0 10px; }
.related-grid p { font-size: 0.82rem; line-height: 1.7; margin: 0; }

.related-sites { background: var(--paper-deep); padding: 30px; margin-top: 50px; border-radius: 14px; }
.related-sites ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.related-sites a { display: flex; align-items: baseline; gap: 18px; text-decoration: none; }
.related-sites strong { min-width: 118px; color: var(--wine-deep); }
.related-sites span { font-size: 0.8rem; color: var(--ink-soft); }

.index-main { padding-top: 72px; padding-bottom: 40px; }
.overview { padding: 4px 0 56px; }
.overview p { max-width: 760px; }

.page-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 30px; }
.page-grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px;
  position: relative;
}
.page-grid .num {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--wine-deep);
  font-family: var(--serif);
  font-size: 0.95rem;
  margin-bottom: 12px;
}
.page-grid h3 { margin: 4px 0 10px; font-size: 1.05rem; }
.page-grid p { font-size: 0.84rem; line-height: 1.7; margin: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--wine-deep); color: #ecdcd9; padding: 56px 24px 22px; }
.footer-grid {
  max-width: 1120px;
  margin: auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
}
.footer-grid h2 { font-family: var(--serif); font-size: 1rem; color: #fff8ec; margin: 0 0 14px; }
.footer-grid p { font-size: 0.78rem; max-width: 380px; color: #d9c3bf; }
.footer-grid nav { display: flex; flex-direction: column; align-items: flex-start; }
.footer-grid a { color: #ecdcd9; font-size: 0.8rem; margin-bottom: 8px; text-decoration: none; }
.footer-grid a:hover { color: var(--gold-light); }
.footer-links {
  max-width: 1120px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid #6a3040;
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}
.footer-links a { color: #ecdcd9; font-size: 0.78rem; text-decoration: none; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.copyright { max-width: 1120px; margin: 18px auto 0; padding-top: 0; font-size: 0.65rem; color: #b98f92; }

/* ---------- Mobile ---------- */
@media (max-width: 800px) {
  html { scroll-padding-top: 4.5rem; }
  .brand-row { min-height: 64px; padding: 10px 18px; }
  .brand strong { font-size: 0.94rem; }
  .brand small { font-size: 0.48rem; }
  .menu-toggle { display: block; }
  .global-nav {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    top: 64px;
    height: calc(100vh - 64px);
    background: var(--paper);
    overflow: auto;
  }
  .global-nav.is-open { display: block; }
  .global-nav ul { display: block; padding: 16px 24px; }
  .global-nav a { font-size: 0.92rem; padding: 14px 8px; border-bottom: 1px solid var(--line); }
  .hero-block { min-height: 420px; }
  .hero-copy { width: calc(100% - 36px); padding: 62px 0 40px; }
  .hero-copy h1 { font-size: clamp(1.7rem, 8.5vw, 2.3rem); overflow-wrap: anywhere; }
  .hero-copy > p:last-child { font-size: 0.92rem; }
  .container { width: calc(100% - 36px); }
  .content-layout { grid-template-columns: 1fr; gap: 40px; padding-top: 48px; padding-bottom: 64px; }
  .index-main { padding-top: 48px; padding-bottom: 24px; }
  .article > section { margin-bottom: 50px; }
  .article h2 { font-size: 1.38rem; }
  .sidebar { position: static; grid-row: 1; }
  .related-grid, .page-grid { grid-template-columns: 1fr; }
  .related-sites { padding: 22px; }
  .related-sites a { display: block; }
  .related-sites strong, .related-sites span { display: block; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-grid p { margin-bottom: 0; }
}

@media (max-width: 420px) {
  body { font-size: 15px; }
  .brand-mark { display: none; }
  .hero-block { min-height: 380px; }
  .sidebar nav, .ad-slot { padding: 18px; }
  .article h2 { padding-bottom: 10px; }
  .page-grid article, .related-grid article { padding: 20px; }
}

/* LATEST-COMMENTARY:START */
.latest-commentary {
  padding: 3rem 0;
}
/* .container を持たないサイトでも端に張り付かないための保険。
   :where() は詳細度0なので、サイト側の .container 定義が常に優先される。 */
:where(.latest-commentary .container) {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1rem;
}
.latest-commentary h2 {
  margin-bottom: 1.25rem;
}
.latest-commentary-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.latest-commentary-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line, #e5e5e5);
}
.latest-commentary-list time {
  flex: 0 0 auto;
  color: var(--muted, #666);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}
.latest-commentary-list a {
  flex: 1 1 16rem;
  min-width: 0;
  color: var(--ink, #222);
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.latest-commentary-list a:hover {
  color: #0b5;
  text-decoration: underline;
}
.latest-commentary-more {
  margin-top: 1.25rem;
}
.latest-commentary-more a {
  color: #0b5;
  text-decoration: none;
  font-weight: 600;
}
.latest-commentary-more a:hover {
  text-decoration: underline;
}
@media (max-width: 600px) {
  .latest-commentary-list li {
    flex-direction: column;
    gap: 0.2rem;
  }
  /* 縦積み時に flex-basis(16rem) が高さに効かないよう auto に戻す */
  .latest-commentary-list a,
  .latest-commentary-list time {
    flex: 0 0 auto;
  }
}
/* LATEST-COMMENTARY:END */

/* HEADING-WRAP:START 見出し最終行孤立文字対策 (AGENTS.md NoGo) */
h1,h2,h3,h4,.hero-title,.page-title,.card-title{text-wrap:balance;word-break:auto-phrase;line-break:strict;overflow-wrap:break-word}
/* HEADING-WRAP:END */