@charset "UTF-8";
/* ORECTIC 全ページ共通（2026リニューアル：大正モダン×渾天儀）。決まりはテーマ直下の DESIGN.md / MOTION.md。
   旧デザインの css/main.css・critical.css は読み込まない（ファイルは残置）。
   動きは js/site.js。JSが動いたとき（html.has-motion）だけ「描かれる前」の状態に隠す */

:root {
  --o-bg: #140709;
  --o-bg-deep: #0d0507;
  --o-surface: #1d080c;
  --o-text: #efe6d3;
  --o-muted: #b9ab8c;
  --o-brass: #c8a050;
  --o-brass-soft: rgba(200, 160, 80, 0.32);
  --o-paper: #e6d9bd;
  --o-ink: #2a1a12;
  --o-ink-muted: #6b4a2e;
  --o-ease: cubic-bezier(0.65, 0, 0.35, 1);
  --o-spine: clamp(16px, 4vw, 64px); /* 真鍮の線の位置（左からの距離） */
  --o-indent: clamp(40px, 9vw, 150px); /* 本文の左端 */
  --o-gutter: clamp(16px, 4vw, 64px);
  --o-display: "Poiret One", "Zen Kaku Gothic New", sans-serif;
  --o-body: "Zen Kaku Gothic New", sans-serif;
  --o-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- 土台 ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  color: var(--o-text);
  font: 400 clamp(1rem, 0.96rem + 0.2vw, 1.0625rem) / 2 var(--o-body);
  background-color: var(--o-bg);
  background-image: var(--o-noise);
  -webkit-font-smoothing: antialiased;
}
img,
svg,
video {
  max-width: 100%;
}
img {
  height: auto;
}
a {
  color: inherit;
  text-decoration: none; /* 下線は記事の本文のリンクだけ（css/pages.css の .entry a） */
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--o-brass);
  outline-offset: 4px;
}
::selection {
  color: var(--o-bg);
  background: var(--o-brass);
}
.screen-reader-text {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---- ヘッダー（トップ以外。トップはファーストビューの中にナビがある） ---- */
.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: clamp(1.25rem, 2.5vw, 2rem) var(--o-gutter) clamp(1.25rem, 2.5vw, 2rem) var(--o-indent);
  border-bottom: 1px solid var(--o-brass-soft);
}
.site-header__logo {
  position: relative;
  z-index: 6;
  color: var(--o-text);
  font: 400 clamp(1.375rem, 1.1rem + 1vw, 1.875rem) / 1 var(--o-display);
  letter-spacing: 0.28em;
  text-decoration: none;
}
.site-header__menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem clamp(1rem, 2vw, 2rem);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-header__menu a {
  color: var(--o-text);
  font: 400 1.0625rem / 1.6 var(--o-display);
  letter-spacing: 0.08em;
  text-decoration: none;
}
.site-header__menu a:hover,
.site-header__menu a[aria-current="page"],
.site-header__menu a.is-external {
  color: var(--o-brass);
}
.site-header__menu a.is-external:hover {
  color: var(--o-text);
}
.site-header__toggle {
  display: none;
}
@media (max-width: 1100px) {
  .site-header__toggle {
    position: relative;
    z-index: 6;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: none;
    border: 0;
    cursor: pointer;
  }
  .site-header__toggle span {
    position: absolute;
    left: 10px;
    right: 10px;
    height: 1px;
    background: var(--o-text);
    transition: transform 0.3s var(--o-ease);
  }
  .site-header__toggle span:first-child {
    transform: translateY(-4px);
  }
  .site-header__toggle span:last-child {
    transform: translateY(4px);
  }
  .is-menu-open .site-header__toggle span:first-child {
    transform: rotate(45deg);
  }
  .is-menu-open .site-header__toggle span:last-child {
    transform: rotate(-45deg);
  }
  .site-header__menu {
    position: fixed;
    inset: 0;
    z-index: 5;
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 1.25rem;
    padding: 0 clamp(1.5rem, 8vw, 3rem);
    background: var(--o-bg-deep);
  }
  .is-menu-open .site-header__menu {
    display: flex;
  }
  .site-header__menu a {
    font-size: 1.75rem;
    letter-spacing: 0.12em;
  }
  .site-header__menu a.is-external {
    font-size: 1.375rem;
  }
  .site-header__menu li:nth-child(5) {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--o-brass-soft);
  }
  .site-header__menu a span {
    display: inline-block;
  }
  .has-motion .site-header__menu a span {
    clip-path: inset(0 100% 0 0);
  }
  .has-motion .is-menu-open .site-header__menu a span {
    clip-path: inset(0 0 0 0);
    transition: clip-path 0.45s var(--o-ease) calc(var(--i) * 0.06s + 0.05s);
  }
}

/* ---- ページを貫く真鍮の線（トップのFVの引き出し線の続き）。節目に点と短い枝 ---- */
.o-flow {
  position: relative;
}
.o-spine {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.o-spine path {
  fill: none;
  stroke: var(--o-brass);
  stroke-width: 1;
}
.o-spine .o-spine__node {
  fill: var(--o-bg);
  stroke: var(--o-brass);
  stroke-width: 1;
  transition: fill 0.4s linear;
}
.o-spine .o-spine__node.is-lit {
  fill: var(--o-brass);
}
.o-spine .o-spine__branch {
  stroke-dasharray: 1 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 0.6s var(--o-ease);
}
.o-spine .o-spine__branch.is-lit {
  stroke-dashoffset: 0;
}

.o-section {
  position: relative;
  max-width: 1280px;
  margin: 0 auto 0 0;
  padding: clamp(6rem, 4rem + 8vw, 11rem) var(--o-gutter) 0 var(--o-indent);
}
.o-section:last-child {
  padding-bottom: clamp(6rem, 4rem + 8vw, 11rem);
}
.o-section p {
  margin: 0 0 1.25em;
}

/* ---- 見出し：下を真鍮の線が走り、通った跡から文字が現れる ---- */
.o-heading {
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
}
.o-heading__title {
  margin: 0;
  color: var(--o-text);
  font: 400 clamp(2.75rem, 1.6rem + 5vw, 5.5rem) / 1.05 var(--o-display);
  letter-spacing: 0.04em;
}
.o-heading__sub {
  margin: 0.75rem 0 0;
  color: var(--o-muted);
  font: 500 1rem / 1.6 var(--o-body);
  letter-spacing: 0.16em;
}
[data-sweep] > span {
  position: relative;
  display: inline-block;
}
.has-motion [data-sweep] > span {
  clip-path: inset(0 100% 0 0);
}
.has-motion [data-sweep] > span::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.08em;
  height: 1px;
  background: var(--o-brass);
  transform: scaleX(0);
  transform-origin: left;
}
.has-motion [data-sweep].is-swept > span {
  clip-path: inset(0 0 0 0);
  transition: clip-path 0.7s var(--o-ease) var(--d, 0s);
}
.has-motion [data-sweep].is-swept > span::after {
  animation: o-sweep 1.4s linear var(--d, 0s) forwards;
}
/* 前半で文字と同じ速さで伸び、後半で左から縮んで消える */
@keyframes o-sweep {
  0% {
    transform: scaleX(0);
    transform-origin: left;
    animation-timing-function: cubic-bezier(0.65, 0, 0.35, 1);
  }
  50% {
    transform: scaleX(1);
    transform-origin: left;
  }
  50.01% {
    transform: scaleX(1);
    transform-origin: right;
    animation-timing-function: cubic-bezier(0.65, 0, 0.35, 1);
  }
  100% {
    transform: scaleX(0);
    transform-origin: right;
  }
}

.o-link {
  display: inline-block;
  margin-top: 1.5rem;
  padding-bottom: 0.2em;
  color: var(--o-brass);
  border-bottom: 1px solid var(--o-brass-soft);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: border-color 0.3s linear;
}
.o-link:hover {
  border-color: var(--o-brass);
}

/* ---- 真鍮の銘板。枠が左上から描き出されてできあがり、マウスを乗せると光が走る ---- */
.plaque-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: clamp(1rem, 0.6rem + 1.4vw, 1.75rem);
  margin: 0;
  padding: 0;
  list-style: none;
}
.plaque__link {
  position: relative;
  display: grid;
  align-content: center;
  gap: 0.4rem;
  min-height: 220px;
  padding: 2.25rem 2rem;
  overflow: hidden;
  color: var(--o-text);
  background: var(--o-surface);
  text-decoration: none;
}
.plaque__link::before {
  content: "";
  position: absolute;
  inset: -20% auto -20% 0;
  width: 40%;
  background: linear-gradient(105deg, transparent, rgba(255, 222, 160, 0.14), transparent);
  transform: translateX(-160%) skewX(-12deg);
  pointer-events: none;
}
.plaque__link:hover::before,
.plaque__link:focus-visible::before {
  transform: translateX(360%) skewX(-12deg);
  transition: transform 0.9s var(--o-ease);
}
.plaque__frame {
  position: absolute;
  inset: 0;
  border: 1px solid var(--o-brass);
  pointer-events: none;
}
.plaque__frame::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid var(--o-brass-soft);
}
.has-motion .plaque__frame {
  clip-path: inset(0 100% 100% 0);
}
.has-motion .plaque.is-drawn .plaque__frame {
  clip-path: inset(0 0 0 0);
  transition: clip-path 1.1s var(--o-ease) calc(var(--i, 0) * 0.12s);
}
.plaque__kind {
  color: var(--o-brass);
  font-size: 1rem;
  letter-spacing: 0.14em;
}
.plaque__name {
  color: var(--o-text);
  font: 400 clamp(1.625rem, 1.3rem + 1vw, 2rem) / 1.3 var(--o-display);
  letter-spacing: 0.06em;
}
.plaque__note {
  color: var(--o-muted);
  font-size: 1rem;
  line-height: 1.8;
}
.has-motion .plaque__kind,
.has-motion .plaque__name,
.has-motion .plaque__note {
  clip-path: inset(0 100% 0 0);
}
.has-motion .plaque.is-drawn .plaque__kind,
.has-motion .plaque.is-drawn .plaque__name,
.has-motion .plaque.is-drawn .plaque__note {
  clip-path: inset(0 0 0 0);
  transition: clip-path 0.7s var(--o-ease) calc(var(--i, 0) * 0.12s + 0.6s);
}

/* ---- 台帳。タイプライターで1文字ずつ打たれる ---- */
.ledger {
  max-width: 920px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--o-brass-soft);
}
.ledger__row {
  display: grid;
  grid-template-columns: minmax(8.5rem, 13rem) minmax(0, 1fr);
  gap: 1rem 2rem;
  padding: 1.25rem 0;
  border-bottom: 1px dashed var(--o-brass-soft);
}
.ledger__when {
  color: var(--o-brass);
  font-size: 1.125rem;
  letter-spacing: 0.08em;
}
.ledger__what {
  font-size: 1.125rem;
}
.ledger__what a {
  color: var(--o-text);
  text-decoration: none;
}
.ledger__what a:hover {
  color: var(--o-brass);
}
.has-motion [data-type] .ch {
  visibility: hidden;
}
.has-motion [data-type] .ch.is-on {
  visibility: visible;
}
[data-type].is-typing::after {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 1px;
  margin-left: 0.05em;
  vertical-align: -0.1em;
  background: var(--o-brass);
}

/* ---- 図書館の目録カード（記事のカード） ---- */
.catalog-card__link {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.75rem;
  height: 100%;
  padding: 1.75rem 1.25rem 1.5rem;
  color: var(--o-ink);
  text-decoration: none;
  background-color: var(--o-paper);
  background-image: repeating-linear-gradient(to bottom, transparent 0 31px, rgba(110, 70, 40, 0.18) 31px 32px);
  background-position: 0 60%;
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.4);
  transition: transform 0.35s var(--o-ease), box-shadow 0.35s var(--o-ease);
}
.catalog-card__link:hover,
.catalog-card__link:focus-visible {
  color: var(--o-ink);
  transform: translateY(-6px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.45);
}
.catalog-card__holder {
  position: absolute;
  top: 0.6rem;
  left: 50%;
  width: 3.25rem;
  height: 0.7rem;
  border: 1px solid var(--o-brass);
  border-top: 0;
  border-radius: 0 0 3px 3px;
  transform: translateX(-50%);
}
.catalog-card__image {
  width: 100%;
  aspect-ratio: 1200 / 630;
  object-fit: cover;
  filter: sepia(0.35) saturate(0.85);
  border-radius: 2px;
}
.catalog-card__noimage {
  display: grid;
  place-items: center;
  aspect-ratio: 1200 / 630;
  color: var(--o-ink-muted);
  font: 400 1.25rem var(--o-display);
  letter-spacing: 0.2em;
  border: 1px dashed rgba(110, 70, 40, 0.4);
  border-radius: 2px;
}
.catalog-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  color: var(--o-ink-muted);
  font-size: 1rem;
  letter-spacing: 0.06em;
}
.catalog-card__title {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.7;
}
/* ほかのサイトの記事：出所を真鍮の小さな札で */
.catalog-card__source {
  justify-self: start;
  padding: 0.1rem 0.75rem;
  color: #8a6526;
  font: 400 1rem / 1.6 var(--o-display);
  letter-spacing: 0.06em;
  border: 1px solid #8a6526;
  border-radius: 2px;
}
.catalog-card--more .catalog-card__link {
  place-content: center;
  min-height: 100%;
  text-align: center;
}

/* ---- 真鍮の枠のボタン。枠が描き出され、マウスを乗せると光が走る ---- */
.brass-button {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: min(300px, 100%);
  min-height: 72px;
  padding: 0 1.5rem;
  overflow: hidden;
  color: var(--o-text);
  font: 700 1.125rem / 1.4 var(--o-body);
  letter-spacing: 0.24em;
  text-decoration: none;
  background: none;
  border: 0;
  cursor: pointer;
}
.brass-button:hover {
  color: var(--o-brass);
}
.brass-button__frame {
  position: absolute;
  inset: 0;
  border: 1px solid var(--o-brass);
  pointer-events: none;
}
.has-motion .brass-button__frame {
  clip-path: inset(0 100% 100% 0);
}
.has-motion .brass-button.is-drawn .brass-button__frame {
  clip-path: inset(0 0 0 0);
  transition: clip-path 1.1s var(--o-ease);
}
.brass-button::before {
  content: "";
  position: absolute;
  inset: -20% auto -20% 0;
  width: 35%;
  background: linear-gradient(105deg, transparent, rgba(255, 222, 160, 0.2), transparent);
  transform: translateX(-160%) skewX(-12deg);
  pointer-events: none;
}
.brass-button:hover::before,
.brass-button:focus-visible::before {
  transform: translateX(420%) skewX(-12deg);
  transition: transform 0.9s var(--o-ease);
}
.has-motion .brass-button__label {
  clip-path: inset(0 100% 0 0);
}
.has-motion .brass-button.is-drawn .brass-button__label {
  clip-path: inset(0 0 0 0);
  transition: clip-path 0.6s var(--o-ease) 0.9s;
}

.o-contact__lead {
  margin: 0 0 2.5rem;
  font-size: 1.125rem;
}

/* ---- フッター ---- */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1rem 2rem;
  padding: 2.5rem var(--o-gutter) 3rem var(--o-indent);
  color: var(--o-text);
  font-family: var(--o-display);
  background: var(--o-bg-deep);
  border-top: 1px solid var(--o-brass-soft);
}
.site-footer a {
  color: var(--o-text);
  text-decoration: none;
}
.site-footer a:hover,
.site-footer a.is-external {
  color: var(--o-brass);
}
.site-footer a.is-external:hover {
  color: var(--o-text);
}
.site-footer__logo {
  font-size: 1.5rem;
  letter-spacing: 0.28em;
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0;
  padding: 0;
  font-size: 1.0625rem;
  letter-spacing: 0.08em;
  list-style: none;
}
.site-footer__copy {
  margin-left: auto;
  color: var(--o-muted);
  font-size: 1rem;
}

@media (max-width: 768px) {
  .ledger__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.25rem;
  }
  .site-footer__copy {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .has-motion [data-sweep] > span,
  .has-motion .plaque__kind,
  .has-motion .plaque__name,
  .has-motion .plaque__note,
  .has-motion .brass-button__label,
  .has-motion .site-header__menu a span {
    clip-path: none !important;
  }
  .has-motion [data-sweep] > span::after {
    content: none;
  }
  .has-motion .plaque__frame,
  .has-motion .brass-button__frame {
    clip-path: none !important;
  }
  .has-motion [data-type] .ch {
    visibility: visible;
  }
  .plaque__link::before,
  .brass-button::before {
    display: none;
  }
}