/* ==========================================================================
   euclidean.jp — A案（幾何学・構造）
   design/Main.dc.html ほかのインラインスタイルをトークン化したもの
   ========================================================================== */

:root {
  --paper: oklch(0.985 0.004 95);
  --paper-tint: oklch(0.955 0.008 195);
  --ink: oklch(0.24 0.012 250);
  --ink-2: oklch(0.34 0.012 250);
  --muted: oklch(0.45 0.012 250);
  --muted-2: oklch(0.55 0.012 250);
  --rule: oklch(0.88 0.008 250);
  --rule-soft: oklch(0.9 0.008 250);
  --accent: oklch(0.55 0.09 195);
  --accent-deep: oklch(0.4 0.1 195);
  --accent-line: oklch(0.74 0.045 195);
  --accent-border: oklch(0.72 0.03 195);

  --gothic: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;

  --gutter: 72px;
  --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--gothic);
  font-weight: 400;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: oklch(0.38 0.08 195); }

img { max-width: 100%; height: auto; }

h1, h2, h3 { font-family: var(--mincho); font-weight: 600; margin: 0; }

.mincho { font-family: var(--mincho); }

.wrap { max-width: var(--max); margin: 0 auto; }

/* --- ヘッダ／フッタ ------------------------------------------------------ */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px var(--gutter);
  border-bottom: 1px solid var(--rule);
}
.site-header__logo { height: 30px; width: auto; display: block; }
.site-nav { display: flex; gap: 40px; font-size: 13px; letter-spacing: 0.14em; }
.site-nav a { color: var(--muted); }
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--accent); }

.site-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 44px var(--gutter);
  border-top: 1px solid var(--rule);
}
.site-footer__logo { height: 28px; width: auto; display: block; }
.site-footer__meta { display: flex; flex-direction: column; gap: 7px; align-items: flex-end; text-align: right; }
.site-footer__links { display: flex; gap: 22px; font-size: 13px; }
.site-footer__name { font-size: 13px; font-weight: 500; }
.site-footer__copy { font-size: 11px; color: var(--muted-2); letter-spacing: 0.04em; }

/* --- セクション ---------------------------------------------------------- */

.section { padding: 88px var(--gutter); border-bottom: 1px solid var(--rule); }
.section--tint { background: var(--paper-tint); }
.section--flush { border-bottom: none; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 44px;
}
.section-head__num { font-size: 12px; letter-spacing: 0.2em; color: var(--accent); }
.section-head__title { font-size: 25px; letter-spacing: 0.05em; }
.section-head__count { font-size: 12px; color: var(--muted-2); }
.section-head__rule { flex-grow: 1; height: 1px; background: var(--rule); }

.eyebrow { display: flex; align-items: center; gap: 16px; }
.eyebrow__line { width: 40px; height: 1px; background: var(--accent); }
.eyebrow__text { font-size: 11px; letter-spacing: 0.24em; color: var(--accent); }

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: var(--muted-2);
  margin-bottom: 26px;
}

.page-head { padding: 64px var(--gutter) 0; }
.page-head__title { font-size: 40px; letter-spacing: 0.08em; }

/* --- ヒーロー ------------------------------------------------------------ */

.hero {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 40px;
  padding: 96px var(--gutter) 104px;
  border-bottom: 1px solid var(--rule);
}
.hero__body { grid-column: span 8; display: flex; flex-direction: column; gap: 34px; }
.hero__title { font-size: 42px; line-height: 1.62; letter-spacing: 0.01em; text-wrap: pretty; }
.hero__lead { margin: 0; max-width: 30em; font-size: 15px; line-height: 2.1; color: var(--muted); }
.hero__figure {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.hero__caption { font-size: 11px; letter-spacing: 0.14em; color: var(--muted-2); text-align: center; }

/* --- プロフィール -------------------------------------------------------- */

.profile-lead {
  margin: 0 0 46px;
  font-size: 17px;
  font-weight: 500;
  line-height: 2.05;
  max-width: 44em;
  text-wrap: pretty;
}
.profile { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 44px; }
.profile__photo { grid-column: span 4; }
.profile__photo img { width: 100%; display: block; }
.profile__body { grid-column: span 8; display: flex; flex-direction: column; gap: 22px; }
.profile__name { font-size: 22px; letter-spacing: 0.03em; }
.profile__titles {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 13px; color: var(--muted); line-height: 1.85;
}
.profile__summary {
  margin: 0; font-size: 14px; font-weight: 500; line-height: 2.05;
  border-left: 2px solid var(--accent); padding-left: 18px;
}
.profile__history { display: flex; flex-direction: column; gap: 12px; }
.profile__history-label { font-size: 12px; letter-spacing: 0.14em; color: var(--accent); }
.profile__history-list {
  display: flex; flex-direction: column; gap: 11px;
  font-size: 13px; line-height: 1.95; color: var(--ink-2);
}

/* --- CTA / SNS ----------------------------------------------------------- */

.cta { display: flex; flex-direction: column; gap: 18px; }
.cta__title { font-size: 20px; line-height: 1.8; letter-spacing: 0.02em; text-wrap: pretty; }
.cta__text { margin: 0; font-size: 14px; line-height: 2; color: var(--muted); max-width: 46em; }

.sns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.sns a {
  padding: 9px 22px;
  border: 1px solid var(--accent-border);
  font-size: 13px;
  letter-spacing: 0.06em;
}

/* --- ニュース一覧 -------------------------------------------------------- */

.news-list { display: flex; flex-direction: column; }
.news-row {
  display: grid;
  grid-template-columns: 116px 96px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: start;
  padding: 20px 0;
  border-top: 1px solid var(--rule-soft);
}
.news-list .news-row:last-child { border-bottom: 1px solid var(--rule-soft); }
.news-row__date { font-size: 13px; color: var(--muted-2); letter-spacing: 0.04em; }
.news-row__title { font-size: 14px; line-height: 1.8; }
.news-row__link { font-size: 12px; letter-spacing: 0.06em; white-space: nowrap; }
.news-row__link--none { color: oklch(0.72 0.008 250); }
.news-row__body {
  grid-column: 3 / -1;
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.95;
  color: var(--muted);
  /* 本文に生のURLが含まれる件があるため、折り返せない語も必ず折る */
  overflow-wrap: anywhere;
}

.tag {
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 2px 0;
  text-align: center;
  border: 1px solid var(--rule);
  color: var(--muted);
}
.tag--works { color: var(--accent); border-color: oklch(0.78 0.04 195); }

.more { margin-top: 28px; font-size: 13px; letter-spacing: 0.06em; }

/* ニュースのタグ絞り込み */
.filter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 26px;
}
.filter__tabs { display: flex; gap: 10px; }
.filter__tab {
  padding: 8px 20px;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: transparent;
  border: 1px solid oklch(0.84 0.01 250);
  cursor: pointer;
}
.filter__tab[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: oklch(0.99 0.004 95);
}
.filter__count { font-size: 12px; color: var(--muted-2); letter-spacing: 0.06em; }

/* --- Works の棚 ---------------------------------------------------------- */

.shelf { display: flex; flex-direction: column; gap: 20px; }
.shelf + .shelf { margin-top: 52px; }
.shelf__head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 14px; }
.shelf__num { font-size: 11px; letter-spacing: 0.18em; color: oklch(0.62 0.05 195); }
.shelf__title { font-size: 18px; letter-spacing: 0.03em; }
.shelf__count { font-size: 12px; color: var(--muted-2); }

.tiles { display: grid; gap: 26px 22px; }
.tiles--1 { grid-template-columns: minmax(0, 1fr); }
.tiles--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tiles--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tiles--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.tile { display: flex; flex-direction: column; gap: 11px; color: inherit; }
.tile__thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: block;
  border: 1px solid var(--rule-soft);
  background: oklch(1 0 0);
}
.tile__thumb--cover { object-fit: cover; }
.tile__thumb--contain { object-fit: contain; padding: 14px; }
.tile__thumb--empty {
  border: 1px dashed oklch(0.82 0.01 250);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: oklch(0.66 0.01 250);
}
.tile__date { font-size: 12px; color: var(--muted-2); letter-spacing: 0.04em; }
.tile__title { font-size: 12px; font-family: var(--gothic); font-weight: 500; line-height: 1.8; color: var(--ink-2); }
.tile__desc { margin: 0; font-size: 12px; line-height: 1.9; color: var(--muted); }

.shelf-split { display: grid; grid-template-columns: 2fr 1fr; gap: 44px; }
.shelf-split .shelf + .shelf { margin-top: 0; }

/* --- カテゴリカード（/works/） ------------------------------------------- */

.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.cat-card {
  background: var(--paper);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: inherit;
}
.cat-card:hover { background: var(--paper-tint); }
.cat-card__num { font-size: 11px; letter-spacing: 0.18em; color: oklch(0.62 0.05 195); }
.cat-card__title { font-size: 22px; letter-spacing: 0.03em; }
.cat-card__text { margin: 0; font-size: 13px; line-height: 1.95; color: var(--muted); }
.cat-card__more { font-size: 12px; color: var(--accent); margin-top: 4px; }

/* --- 会社概要 / アクセス ------------------------------------------------- */

.deflist { display: flex; flex-direction: column; max-width: 860px; }
.deflist__row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--rule-soft);
}
.deflist__row:last-child { border-bottom: 1px solid var(--rule-soft); }
.deflist__key { font-size: 13px; color: var(--muted-2); }
.deflist__val { font-size: 14px; line-height: 1.8; }

.access { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px; margin-bottom: 40px; }
.access__block { display: flex; flex-direction: column; gap: 10px; }
.access__label { font-size: 14px; font-weight: 500; }
.access__text { font-size: 14px; line-height: 1.9; }
.access__route { font-size: 13px; line-height: 1.9; color: var(--ink-2); }
.access__note { font-size: 12px; line-height: 1.9; color: var(--muted-2); }
.access__photos { display: grid; grid-template-columns: 4fr 3fr 5fr; gap: 12px; }
.access__photos img { width: 100%; height: 220px; object-fit: cover; display: block; }

/* --- お問い合わせ -------------------------------------------------------- */

.contact { display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.contact__note { margin: 0; font-size: 13px; color: var(--muted); }
.contact__mail {
  font-family: var(--mincho);
  font-size: 24px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--accent-border);
  padding-bottom: 5px;
  margin-top: 6px;
}

/* --- 本文（ニュース詳細・規程類） ---------------------------------------- */

.prose { max-width: 46em; font-size: 14px; line-height: 2.05; overflow-wrap: anywhere; }
/* 幅の広い表は本文をはみ出さず、その中だけ横スクロールさせる */
.prose > table { display: block; overflow-x: auto; }
.prose h1, .prose h2, .prose h3 { margin: 2em 0 0.8em; letter-spacing: 0.03em; }
.prose h2 { font-size: 20px; }
.prose h3 { font-size: 17px; }
.prose p { margin: 0 0 1.4em; }
.prose ul, .prose ol { margin: 0 0 1.4em; padding-left: 1.4em; }
.prose li { margin-bottom: 0.4em; }
.prose img { display: block; margin: 1.6em 0; border: 1px solid var(--rule-soft); }
.prose hr { border: none; border-top: 1px solid var(--rule); margin: 2.4em 0; }
.prose table { border-collapse: collapse; width: 100%; margin: 0 0 1.6em; }
.prose th, .prose td {
  border: 1px solid var(--rule); padding: 10px 14px;
  font-size: 13px; text-align: left; vertical-align: top;
}
.prose .cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.prose .cols img { margin: 0; }

.article-head { display: flex; flex-direction: column; gap: 14px; margin-bottom: 40px; }
.article-head__meta { display: flex; align-items: center; gap: 14px; }
.article-head__date { font-size: 13px; color: var(--muted-2); letter-spacing: 0.04em; }
.article-head__title { font-size: 28px; line-height: 1.65; letter-spacing: 0.02em; text-wrap: pretty; }

/* --- ピックアップ（/works/media/ 先頭） ---------------------------------- */

.pickup {
  padding: 26px;
  border: 1px solid oklch(0.78 0.04 195);
  background: var(--paper-tint);
  margin-bottom: 40px;
}
.pickup__inner { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 30px; align-items: start; }
.pickup__thumb { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; border: 1px solid oklch(0.88 0.02 195); }
.pickup__body { display: flex; flex-direction: column; gap: 12px; }
.pickup__badge {
  font-size: 10px; letter-spacing: 0.12em; color: var(--accent-deep);
  border: 1px solid oklch(0.7 0.05 195); padding: 2px 9px;
}
.pickup__title { font-size: 21px; line-height: 1.7; }
.pickup__desc { margin: 0; font-size: 13px; line-height: 2; color: var(--ink-2); white-space: pre-line; }

/* --- 404 ----------------------------------------------------------------- */

.notfound {
  padding: 140px var(--gutter);
  display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center;
}
.notfound__code { font-family: var(--mincho); font-size: 64px; letter-spacing: 0.08em; color: var(--accent); }

/* --- ブリッジ ------------------------------------------------------------ */

.bridge { padding: 120px var(--gutter); text-align: center; font-size: 14px; line-height: 2; }

/* --- レスポンシブ -------------------------------------------------------- */

@media (max-width: 1000px) {
  :root { --gutter: 40px; }
  .hero { padding: 64px var(--gutter) 72px; }
  .hero__body, .hero__figure { grid-column: span 12; }
  .hero__figure { align-items: flex-start; }
  .hero__title { font-size: 32px; }
  .profile__photo { grid-column: span 5; }
  .profile__body { grid-column: span 7; }
  .tiles--4 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .shelf-split { grid-template-columns: 1fr; gap: 52px; }
  .shelf-split .shelf + .shelf { margin-top: 0; }
  .access { grid-template-columns: 1fr; gap: 32px; }
  .cat-grid { grid-template-columns: 1fr; }
  .pickup__inner { grid-template-columns: 200px minmax(0, 1fr); gap: 22px; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; }

  body { line-height: 1.85; }

  .site-header { padding: 18px var(--gutter); }
  .site-header__logo { height: 24px; }
  .site-nav { gap: 18px; font-size: 11px; letter-spacing: 0.1em; }

  .section { padding: 52px var(--gutter); }
  .page-head { padding: 36px var(--gutter) 0; }
  .page-head__title { font-size: 28px; }

  .hero { padding: 48px var(--gutter) 56px; gap: 32px; }
  .hero__title { font-size: 25px; line-height: 1.7; }
  .hero__body { gap: 24px; }
  .hero__figure { align-items: center; }

  .section-head { flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
  .section-head__title { font-size: 20px; }
  .section-head__rule { display: none; }

  .profile { gap: 26px; }
  .profile__photo, .profile__body { grid-column: span 12; }
  .profile__photo img { max-width: 260px; }
  .profile-lead { font-size: 15px; margin-bottom: 28px; }
  .profile__name { font-size: 19px; }

  .cta__title { font-size: 17px; }

  /* ニュース行は日付・タグを1段目、本文を2段目に */
  .news-row {
    grid-template-columns: auto auto 1fr;
    gap: 10px 12px;
    padding: 16px 0;
  }
  .news-row__date { grid-column: 1; font-size: 12px; }
  .news-row__tag { grid-column: 2; padding: 1px 8px; }
  .news-row__link { grid-column: 3; justify-self: end; }
  .news-row__title { grid-column: 1 / -1; font-size: 14px; }
  .news-row__body { grid-column: 1 / -1; }

  .tiles--3, .tiles--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tiles { gap: 22px 14px; }
  .shelf + .shelf { margin-top: 40px; }

  .cat-card { padding: 28px 22px; }
  .cat-card__title { font-size: 18px; }

  .deflist__row { grid-template-columns: 1fr; gap: 4px; padding: 14px 0; }
  .deflist__key { font-size: 12px; color: var(--accent); }

  .access__photos { grid-template-columns: 1fr; gap: 10px; }
  .access__photos img { height: 200px; }

  .contact__mail { font-size: 18px; word-break: break-all; }

  .prose .cols { grid-template-columns: 1fr; }
  .article-head__title { font-size: 21px; }

  .pickup { padding: 18px; }
  .pickup__inner { grid-template-columns: 1fr; }
  .pickup__title { font-size: 18px; }

  .notfound { padding: 80px var(--gutter); }
  .notfound__code { font-size: 44px; }

  .filter { gap: 12px; }
  .filter__tab { padding: 7px 14px; font-size: 12px; }
}