/* ===== CSS Variables ===== */
:root {
  --color-bg:             #FAF7F2;
  --color-surface:        #FFFFFF;
  --color-bg-muted:       #F2EDE4;
  --color-bg-tint:        #FBF3E0;

  --color-text:           #2A2622;
  --color-text-muted:     #6B6259;

  --color-primary:        #2D5F3F;
  --color-primary-dark:   #1A3D27;
  --color-primary-soft:   #EDF4EE;

  --color-accent:         #C97B5A;
  --color-accent-hover:   #A8624B;
  --color-accent-soft:    #F5E4D9;

  --color-link:           #2D5F3F;
  --color-link-visited:   #5A4A6B;

  --color-border:         #E8DFD3;
  --color-border-strong:  #D4C7B0;

  --color-info-bg:        #EDF4EE;
  --color-info-bd:        #2D5F3F;
  --color-warn-bg:        #FBF1E0;
  --color-warn-bd:        #C97B5A;
  --color-quote-bg:       #FBF3E0;

  --font-serif: "Zen Old Mincho", "Noto Serif JP", "游明朝", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --font-sans:  "Noto Sans JP", "游ゴシック体", "Yu Gothic", "Hiragino Sans", "ヒラギノ角ゴ ProN", "メイリオ", Meiryo, sans-serif;
  --font-mono:  ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --fs-body: 17px;
  --w-max: 1180px;
  --w-article: 760px;
  --w-sidebar: 280px;
  --gutter: 56px;

  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 36px; --sp-7: 56px; --sp-8: 80px;

  --r-sm: 2px; --r-md: 4px; --r-lg: 8px; --r-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(42, 38, 34, 0.05);
  --shadow-md: 0 6px 18px rgba(42, 38, 34, 0.07);
  --shadow-lg: 0 14px 36px rgba(42, 38, 34, 0.10);

  --h-header: 72px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, dl, dt, dd, figure, blockquote, pre { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
a { color: var(--color-link); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--color-accent); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }

/* ===== Body / HTML base ===== */
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.95;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
:is(h1, h2, h3, h4) { font-family: var(--font-serif); font-weight: 700; line-height: 1.4; }
time, .num { font-variant-numeric: tabular-nums; }

/* ===== Skip Link ===== */
.skip-link {
  position: fixed; top: 8px; left: 8px;
  background: var(--color-primary-dark); color: #F2EDE4;
  padding: 8px 14px; border-radius: 2px;
  text-decoration: none; font-size: 13px;
  z-index: 200;
  transform: translateY(-150%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); color: #F2EDE4; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  min-height: var(--h-header);
  display: flex; align-items: center;
}
.site-header__inner {
  width: 100%;
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 12px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}
.site-logo {
  display: inline-flex; flex-direction: column; gap: 2px;
  text-decoration: none; color: inherit;
  line-height: 1.2;
}
.site-logo__main {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--color-primary-dark);
  letter-spacing: 0.02em;
}
.site-logo__tag {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  display: none;
}
@media (min-width: 1024px) { .site-logo__tag { display: inline; } }
/* ロゴマーク付きの場合のみ横並びにする（他ページのテキストロゴは従来どおり） */
.site-logo:has(.site-logo__mark) { flex-direction: row; align-items: center; gap: 10px; }
.site-logo__mark { width: 40px; height: 40px; flex-shrink: 0; display: block; }
@media (min-width: 1024px) { .site-logo__mark { width: 44px; height: 44px; } }
.site-logo__text { display: inline-flex; flex-direction: column; gap: 2px; line-height: 1.2; }

/* ===== Site Nav ===== */
.site-nav { display: none; }
@media (min-width: 1024px) {
  .site-nav { display: block; justify-self: center; }
  .site-nav ul { display: flex; gap: 28px; }
  .site-nav a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 6px 2px;
    border-bottom: 2px solid transparent;
    transition: color .15s ease, border-color .15s ease;
  }
  .site-nav a:hover { color: var(--color-primary); border-bottom-color: var(--color-border-strong); }
  .site-nav a[aria-current="page"] { color: var(--color-primary-dark); border-bottom-color: var(--color-accent); }
}

/* ===== Hamburger ===== */
.hamburger {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background: var(--color-surface);
}
.hamburger span { display: block; height: 1.5px; width: 100%; background: var(--color-primary-dark); }
@media (min-width: 1024px) { .hamburger { display: none; } }

/* ===== Mobile Nav ===== */
.mobile-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 24px 16px;
}
.mobile-nav ul { display: flex; flex-direction: column; }
.mobile-nav li { border-bottom: 1px solid var(--color-border); }
.mobile-nav li:last-child { border-bottom: 0; }
.mobile-nav a { display: block; padding: 12px 4px; color: var(--color-text); text-decoration: none; font-size: 15px; }

/* ===== Container ===== */
.container { max-width: var(--w-max); margin: 0 auto; padding: 0 24px; }
@media (max-width: 480px) { .container { padding: 0 16px; } }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 2px;
  transition: background .15s ease, color .15s ease;
  letter-spacing: 0.04em;
}
.btn-outline { background: transparent; color: var(--color-accent); border: 1px solid var(--color-accent); }
.btn-outline:hover { background: var(--color-accent); color: #fff; }
.btn-outline--dark { color: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-outline--dark:hover { background: var(--color-primary-dark); color: var(--color-bg); }
.btn-block { display: block; text-align: center; width: 100%; }

/* ===== Breadcrumb ===== */
.breadcrumb { padding: 28px 0 8px; font-size: 13px; color: var(--color-text-muted); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "\203A"; color: var(--color-border-strong); }
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb [aria-current="page"] { color: var(--color-text); }

/* ===== Section Head (shared across home + category) ===== */
.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 48px;
  align-items: end;
}
@media (min-width: 768px) {
  .section-head { grid-template-columns: auto 1fr auto; gap: 32px; }
}
.section-head__kicker {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--color-accent);
}
.section-head__title {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--color-primary-dark);
  line-height: 1.4;
}
@media (min-width: 768px) { .section-head__title { font-size: 32px; } }
.section-head__meta { font-size: 13px; color: var(--color-text-muted); }
.section-head__meta a { color: var(--color-primary); text-decoration: none; border-bottom: 1px solid var(--color-border-strong); padding-bottom: 1px; }
.section-head__meta a:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.section-head__rule { grid-column: 1 / -1; height: 1px; background: var(--color-border-strong); margin-top: 8px; }

/* ===== Widget / Sidebar ===== */
.widget { padding: 0 0 28px; margin-bottom: 28px; border-bottom: 1px solid var(--color-border); }
.widget:last-child { border-bottom: 0; margin-bottom: 0; padding-bottom: 0; }
.widget h3 { font-family: var(--font-serif); color: var(--color-primary); font-size: 14px; letter-spacing: 0.12em; margin-bottom: 16px; }
.widget ul, .widget ol { display: flex; flex-direction: column; gap: 10px; }
.widget li { position: relative; padding-left: 18px; font-size: 14px; line-height: 1.7; }
.widget li::before { content: "\2014"; position: absolute; left: 0; top: 0; color: var(--color-accent); }
.widget a { color: var(--color-text); text-decoration: none; }
.widget a:hover { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.widget-newsletter p { font-size: 13px; color: var(--color-text-muted); margin-bottom: 12px; line-height: 1.7; }
.widget-newsletter small { display: block; margin-top: 10px; font-size: 11px; color: var(--color-text-muted); text-align: center; letter-spacing: 0.04em; }
.widget-rank ol { counter-reset: rank; }
.widget-rank li { counter-increment: rank; }
.widget-rank li::before { content: counter(rank, decimal-leading-zero); font-family: var(--font-serif); font-style: italic; font-size: 13px; color: var(--color-text-muted); }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-primary-dark);
  color: #F2EDE4;
  padding: 56px 0 0;
  margin-top: 0;
}
.site-footer__top {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}
@media (min-width: 768px) {
  .site-footer__top { grid-template-columns: 2fr 1fr 1fr; gap: 56px; }
}
.site-footer .site-logo__main { color: #F2EDE4; }
.footer-about p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 237, 228, 0.78);
  max-width: 36em;
}
.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: #F2EDE4;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.site-footer a { color: #F2EDE4; text-decoration: none; font-size: 14px; }
.site-footer a:hover { color: var(--color-accent-soft); }
.site-footer__bottom {
  border-top: 1px solid rgba(242, 237, 228, 0.15);
  padding: 18px 24px;
  text-align: center;
  font-size: 12px;
  color: rgba(242, 237, 228, 0.6);
  letter-spacing: 0.06em;
}