@charset "utf-8";

/* All current reports, columns and guides share these design tokens and controls.
   Load after the page-family stylesheet; keep article-specific layouts there. */
:root {
  --site-ground: #eeece6;
  --site-sheet: #fffefb;
  --site-ink: #26332f;
  --site-muted: #4f5953;
  --site-subtle: #656b63;
  --site-rule: #d8d2c6;
  --site-tint: #f7f4ed;
  --site-accent: #315c4e;
  --site-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --site-sans: -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", "Yu Gothic Medium", "Yu Gothic", Meiryo, "Noto Sans JP", sans-serif;
  --site-page-width: 1008px;
  font-size: 18px;
  color-scheme: light;
}

body.site-theme {
  margin: 0;
  background: var(--site-ground);
  color: var(--site-ink);
  font-family: var(--site-sans);
  font-size: 1rem;
  line-height: 1.95;
  word-break: normal;
  overflow-wrap: anywhere;
  line-break: strict;
}

.site-theme :is(h1, h2, h3) { font-family: var(--site-serif); }
.site-theme :is(a, button, summary, input, textarea, select, [tabindex="0"]):focus-visible {
  outline: 3px solid var(--site-accent);
  outline-offset: 4px;
}
.site-theme ::selection { color: var(--site-ink); background: #e9dfc2; }
.site-theme .site-masthead,
.site-theme .site-masthead * { box-sizing: border-box; }

.site-theme .site-masthead {
  position: relative;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: min(calc(100% - 2rem), calc(var(--site-page-width) - 2rem));
  margin: 0 auto;
  padding: 1.15rem 0;
  color: var(--site-ink);
  text-align: left;
  font-family: var(--site-sans);
  line-height: 1.6;
}

.site-theme .site-brand {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
  color: var(--site-ink);
  font-weight: 400;
  text-decoration: none;
}
.site-theme .site-brand__name { font: 700 1.35rem / 1.3 Georgia, serif; white-space: nowrap; letter-spacing: 0.04em; }
.site-theme .site-brand__name span { font-weight: 400; font-family: inherit; }
.site-theme .site-brand__note { color: var(--site-subtle); font: 400 0.7rem / 1.5 var(--site-sans); }

.site-theme .site-navigation {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  max-height: none;
  overflow: visible;
  flex-shrink: 0;
  font: 600 0.8rem / 1.5 var(--site-sans);
}
.site-theme .site-navigation > a,
.site-theme .site-directory > summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  margin: 0;
  padding: 0.3rem 0;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--site-muted);
  background: transparent;
  font: inherit;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}
.site-theme .site-navigation > a[aria-current],
.site-theme .site-directory[open] > summary { color: var(--site-accent); border-bottom-color: var(--site-accent); }
.site-theme .site-navigation a:hover { color: var(--site-accent); }
.site-theme .site-masthead a::after { content: none; }
.site-theme .site-directory { position: static; margin: 0; padding: 0; border: 0; background: none; }
.site-theme .site-directory > summary { list-style: none; }
.site-theme .site-directory > summary::-webkit-details-marker { display: none; }
.site-theme .site-directory > summary::after { content: "+"; font: 400 1.1rem / 1 var(--site-sans); }
.site-theme .site-directory[open] > summary::after { content: "−"; }
.site-theme .site-directory__nav {
  position: absolute;
  top: calc(100% - 0.6rem);
  right: 0;
  z-index: 201;
  width: min(27rem, 100%);
  max-height: min(70vh, calc(100dvh - 8rem));
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--site-accent) var(--site-tint);
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--site-rule);
  border-top: 3px solid var(--site-accent);
  background: var(--site-sheet);
  box-shadow: 0 12px 24px rgb(38 51 47 / 12%);
  font-family: var(--site-sans);
}
.site-theme .site-directory__nav .site-directory__heading {
  margin: 0.9rem 0 0.4rem;
  padding: 0;
  color: var(--site-subtle);
  font: 700 0.73rem / 1.5 var(--site-sans);
  border: 0;
  background: none;
}
.site-theme .site-directory__nav .site-directory__heading:first-child { margin-top: 0; }
.site-theme .site-directory__nav ul { margin: 0; padding: 0; list-style: none; }
.site-theme .site-directory__nav li { margin: 0; padding: 0; border-bottom: 1px solid var(--site-rule); }
.site-theme .site-directory__nav li::before { content: none; }
.site-theme .site-directory__nav a {
  display: block;
  padding: 0.7rem 0.35rem;
  min-height: 44px;
  color: var(--site-ink);
  font: 500 0.8rem / 1.6 var(--site-sans);
  text-decoration: none;
}
.site-theme .site-directory__nav a[aria-current="page"] { background: var(--site-tint); border-left: 3px solid var(--site-accent); font-weight: 700; }
.site-theme .site-directory__nav a:hover { background: var(--site-tint); }
.site-theme .site-directory__nav::-webkit-scrollbar { display: block; width: 7px; }

.site-theme .site-backtop {
  position: fixed;
  bottom: max(1rem, env(safe-area-inset-bottom));
  right: max(1rem, env(safe-area-inset-right));
  z-index: 300;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--site-sheet);
  border-radius: 2px;
  background: var(--site-ink);
  color: var(--site-sheet);
  font: 400 1.4rem / 1 var(--site-sans);
  cursor: pointer;
}
.site-theme .site-backtop[hidden],
.site-theme .site-tooltip[hidden] { display: none; }
.site-theme .site-backtop:hover { background: var(--site-accent); }
.site-theme .site-tooltip {
  position: fixed;
  z-index: 11000;
  width: max-content;
  max-width: min(20rem, calc(100vw - 1rem));
  padding: 0.45rem 0.7rem;
  border-radius: 2px;
  background: var(--site-ink);
  color: var(--site-sheet);
  font: 500 0.75rem / 1.6 var(--site-sans);
  text-align: left;
  box-shadow: 0 3px 12px rgb(0 0 0 / 12%);
}

.site-theme .site-image-button {
  display: block;
  position: relative;
  width: 100%;
  padding: 0;
  margin: 0;
  border: 1px solid var(--site-rule);
  border-radius: 0;
  color: var(--site-ink);
  background: var(--site-sheet);
  cursor: zoom-in;
  text-align: inherit;
}
.site-theme .site-image-button::after {
  content: "拡大 ＋";
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  padding: 0.3rem 0.55rem;
  background: var(--site-sheet);
  color: var(--site-ink);
  border: 1px solid var(--site-rule);
  font: 600 0.75rem / 1.5 var(--site-sans);
}
.site-theme .site-image-button img { display: block; width: 100%; height: auto; margin: 0; }
.site-theme .site-inline-image {
  display: inline;
  border: 0;
  padding: 0;
  margin: 0;
  border-radius: 0;
  color: #3b587a;
  background: none;
  font: inherit;
  font-weight: 600;
  text-align: inherit;
  text-decoration: underline dotted;
  text-underline-offset: 0.2em;
  cursor: zoom-in;
}
.site-theme .site-image-dialog {
  position: fixed;
  inset: 0;
  width: min(1100px, calc(100% - 2rem));
  height: fit-content;
  max-height: calc(100dvh - 2rem);
  margin: auto;
  padding: 3.5rem 1rem 1rem;
  overflow: auto;
  border: 1px solid var(--site-rule);
  border-radius: 2px;
  color: var(--site-ink);
  background: var(--site-sheet);
}
.site-theme .site-image-dialog::backdrop { background: rgb(20 31 27 / 75%); }
.site-theme .site-image-dialog img { display: block; width: auto; max-width: 100%; max-height: calc(100dvh - 10rem); margin: 0 auto; object-fit: contain; }
.site-theme .site-image-dialog__title { margin: 0.7rem 0 0; font: 500 0.85rem / 1.7 var(--site-sans); text-align: center; }
.site-theme .site-image-dialog__close {
  position: absolute;
  top: 0.6rem;
  right: 0.7rem;
  min-height: 44px;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--site-rule);
  border-radius: 2px;
  color: var(--site-ink);
  background: var(--site-sheet);
  font: 600 0.85rem / 1.5 var(--site-sans);
  cursor: pointer;
}
body.site-dialog-open { overflow: hidden; }

@media (max-width: 600px) {
  .site-theme .site-masthead { flex-direction: column; align-items: flex-start; gap: 0.4rem; width: 100%; padding: 0.8rem 1.2rem 0.55rem; }
  .site-theme .site-brand__name { font-size: 1.2rem; }
  .site-theme .site-brand__note { font-size: 0.65rem; }
  .site-theme .site-navigation { width: 100%; justify-content: space-between; gap: 0.8rem; }
  .site-theme .site-directory__nav { right: 1rem; width: calc(100% - 2rem); max-height: calc(100dvh - 10rem); }
  .site-theme .site-image-dialog { padding: 3.7rem 0.65rem 0.65rem; width: calc(100% - 1rem); }
}
@media (max-width: 480px) { :root { font-size: 17px; } }
@media (prefers-reduced-motion: reduce) {
  html, html.scroll-smooth { scroll-behavior: auto !important; }
  .site-theme *, .site-theme *::before, .site-theme *::after { animation: none !important; transition: none !important; }
}
@media print {
  .site-masthead, .site-backtop, .site-tooltip, .site-image-dialog, .site-image-button::after { display: none !important; }
  body.site-theme { background: white; }
}