/* ==========================================================
   産官学イノベーション共創センター
   Design tokens
   ink      #1A2530  基調の墨色
   paper    #F6F8F7  地色
   deep     #0F5C6E  センターカラー（深い青緑）
   sec-ai   #2563C4  教育AI・データサイエンス（青）
   sec-sci  #2E8F63  科学・次世代教育（緑）
   sec-fac  #D9822B  産官学共創ファシリテーション（橙）
   ========================================================== */

:root {
  --ink: #1a2530;
  --ink-soft: #4a5a68;
  --paper: #f6f8f7;
  --white: #ffffff;
  --line: #dde4e6;
  --deep: #0f5c6e;
  --deep-dark: #0a4352;
  --sec-ai: #2563c4;
  --sec-sci: #2e8f63;
  --sec-fac: #d9822b;
  --font-display: "Zen Old Mincho", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-latin: "Outfit", sans-serif;
  --radius: 10px;
  --max: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.85;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--deep); }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--sec-fac);
  outline-offset: 2px;
  border-radius: 3px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 18px; z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  min-height: 66px; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark { flex: none; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 16px; line-height: 1.3; }
.brand-name small { display: block; font-family: var(--font-latin); font-weight: 500; font-size: 9.5px; letter-spacing: .14em; color: var(--ink-soft); text-transform: uppercase; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: 8px;
  width: 44px; height: 44px; cursor: pointer; color: var(--ink);
}
.global-nav ul { display: flex; gap: 4px; list-style: none; align-items: center; }
.global-nav a {
  display: block; padding: 8px 12px; text-decoration: none; color: var(--ink);
  font-size: 13.5px; font-weight: 500; border-radius: 6px;
}
.global-nav a:hover { background: var(--paper); color: var(--deep); }
.global-nav a[aria-current="page"] { color: var(--deep); font-weight: 700; }
.nav-lang a {
  border: 1px solid var(--line); font-family: var(--font-latin); letter-spacing: .08em;
  font-size: 12px; padding: 6px 12px;
}

@media (max-width: 900px) {
  .nav-toggle { display: grid; place-items: center; }
  .global-nav { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 16px 16px; }
  .global-nav.open { display: block; }
  .global-nav ul { flex-direction: column; align-items: stretch; }
  .global-nav a { padding: 12px 10px; font-size: 15px; }
}

/* ---------- hero (top) ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #0b3d4a 0%, var(--deep) 60%, #14707f 100%);
  color: #fff;
}
.hero-inner {
  max-width: var(--max); margin: 0 auto; padding: 52px 24px 44px;
  position: relative; z-index: 1;
}
.hero-eyebrow {
  font-family: var(--font-latin); letter-spacing: .3em; font-size: 11px;
  text-transform: uppercase; color: #9fd4de; margin-bottom: 14px;
}
.hero h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(26px, 4.2vw, 44px); line-height: 1.35; letter-spacing: .04em;
}
.hero-lead { margin-top: 16px; max-width: 620px; font-size: 15px; color: #d8ecef; }
.hero-strands { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .5; }
.hero-tags { display: flex; gap: 10px; margin-top: 22px; flex-wrap: wrap; }
.hero-tags span {
  font-size: 12.5px; padding: 5px 14px; border-radius: 999px; font-weight: 500;
  border: 1px solid rgba(255,255,255,.35);
}
.hero-tags .t-ai  { border-color: #7fb2ff; color: #cfe0ff; }
.hero-tags .t-sci { border-color: #86d9b3; color: #d3f3e4; }
.hero-tags .t-fac { border-color: #ffc987; color: #ffe6c6; }

/* tri-color rule = 産官学 signature divider */
.tri-rule { display: flex; height: 6px; }
.tri-rule span { flex: 1; }
.tri-rule .r1 { background: var(--sec-ai); }
.tri-rule .r2 { background: var(--sec-sci); }
.tri-rule .r3 { background: var(--sec-fac); }

/* ---------- sections ---------- */
.section { padding: 64px 0; }
.section.alt { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { margin-bottom: 34px; }
.sec-eyebrow {
  font-family: var(--font-latin); font-size: 11px; letter-spacing: .28em;
  text-transform: uppercase; color: var(--deep); font-weight: 600;
}
.sec-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(22px, 3vw, 30px); letter-spacing: .05em; margin-top: 6px;
}
.sec-title::after {
  content: ""; display: block; width: 52px; height: 3px; margin-top: 12px;
  background: linear-gradient(90deg, var(--sec-ai), var(--sec-sci), var(--sec-fac));
}

/* ---------- departments ---------- */
.dept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .dept-grid { grid-template-columns: 1fr; } }
.dept-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px 22px; text-decoration: none; color: var(--ink);
  display: flex; flex-direction: column; gap: 10px; position: relative;
  border-top: 4px solid var(--dc, var(--deep));
  transition: transform .25s ease, box-shadow .25s ease;
}
.dept-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(15,92,110,.14); }
.dept-card.c-ai  { --dc: var(--sec-ai); }
.dept-card.c-sci { --dc: var(--sec-sci); }
.dept-card.c-fac { --dc: var(--sec-fac); }
.dept-kanji {
  font-family: var(--font-display); font-size: 13px; color: var(--dc);
  letter-spacing: .3em; font-weight: 700;
}
.dept-card h3 { font-size: 18px; font-weight: 700; line-height: 1.5; }
.dept-card p { font-size: 13.5px; color: var(--ink-soft); flex: 1; }
.dept-more { font-size: 13px; font-weight: 700; color: var(--dc); font-family: var(--font-latin); letter-spacing: .06em; }

/* ---------- overview ---------- */
.overview-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 900px) { .overview-grid { grid-template-columns: 1fr; } }
.overview-text p + p { margin-top: 14px; }
.org-box { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.org-box h3 {
  font-family: var(--font-latin); font-size: 12px; letter-spacing: .24em;
  text-transform: uppercase; color: var(--deep); margin-bottom: 14px;
}
.org-box dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; font-size: 14px; }
.org-box dt { color: var(--ink-soft); font-weight: 500; white-space: nowrap; }
.org-box dd { font-weight: 700; }
.org-box dd small { display: block; font-weight: 400; color: var(--ink-soft); font-size: 12px; }

/* ---------- projects / cards ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 800px) { .proj-grid { grid-template-columns: 1fr; } }
.proj-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; text-decoration: none; color: var(--ink); display: block;
  transition: transform .25s ease, box-shadow .25s ease;
}
.proj-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(15,92,110,.14); }
.proj-label {
  display: inline-block; font-family: var(--font-latin); font-size: 11px; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; color: #fff; background: var(--deep);
  padding: 3px 10px; border-radius: 4px; margin-bottom: 12px;
}
.proj-card h3 { font-size: 17px; line-height: 1.55; }
.proj-card p { font-size: 13.5px; color: var(--ink-soft); margin-top: 8px; }

/* ---------- news ---------- */
.news-list { list-style: none; border-top: 1px solid var(--line); }
.news-list li { border-bottom: 1px solid var(--line); }
.news-list a, .news-list .news-row {
  display: grid; grid-template-columns: 110px auto 1fr; gap: 16px; align-items: baseline;
  padding: 16px 6px; text-decoration: none; color: var(--ink);
}
.news-list a:hover { background: #eef4f4; }
@media (max-width: 700px) {
  .news-list a, .news-list .news-row { grid-template-columns: 1fr; gap: 4px; }
}
.news-date { font-family: var(--font-latin); font-size: 13px; color: var(--ink-soft); }
.news-cat {
  font-size: 11px; font-weight: 700; color: var(--deep);
  border: 1px solid var(--deep); border-radius: 999px; padding: 1px 10px; justify-self: start;
}
.news-title { font-size: 14.5px; }

/* ---------- links / others ---------- */
.link-list {
  display: grid;
  gap: 8px;
}

.link-text {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  column-gap: 24px;
  align-items: baseline;
  padding: 8px 0;
  color: var(--ink);
  font-size: 14.5px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.link-text:first-child {
  border-top: 1px solid var(--line);
}

.link-text:hover {
  color: var(--deep);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.link-text small {
  display: block;
  margin-left: 0;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 400;
}

.ext::after {
  content: none;
}

@media (max-width: 700px) {
  .link-text {
    grid-template-columns: 1fr;
    row-gap: 4px;
  }

  .link-text small {
    margin-left: 0;
  }
}

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-box { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; font-size: 14.5px; }
.contact-box h3 { font-size: 15px; margin-bottom: 10px; color: var(--deep); }

/* ---------- page hero (sub pages) ---------- */
.page-hero { color: #fff; background: var(--deep); position: relative; overflow: hidden; }
.page-hero.h-ai  { background: linear-gradient(150deg, #163a72, var(--sec-ai)); }
.page-hero.h-sci { background: linear-gradient(150deg, #175339, var(--sec-sci)); }
.page-hero.h-fac { background: linear-gradient(150deg, #8a4d12, var(--sec-fac)); }
.page-hero.h-deep { background: linear-gradient(150deg, #0b3d4a, #14707f); }
.page-hero-inner { max-width: var(--max); margin: 0 auto; padding: 43px 24px; position: relative; z-index: 1; }
.page-hero .hero-eyebrow { color: rgba(255,255,255,.75); }
.page-hero h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(24px, 3.6vw, 38px); letter-spacing: .04em; line-height: 1.4; }
.page-hero p { margin-top: 12px; max-width: 640px; color: rgba(255,255,255,.88); font-size: 14.5px; }
.breadcrumb { font-size: 12.5px; margin-bottom: 18px; color: rgba(255,255,255,.75); }
.breadcrumb a { color: rgba(255,255,255,.9); }

/* ---------- dept page ---------- */
.index-nav { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.index-nav a {
  font-size: 13px; font-weight: 600; text-decoration: none; color: #fff;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.5); border-radius: 999px; padding: 6px 16px;
}
.index-nav a:hover { background: rgba(255,255,255,.28); }
.duty-list { list-style: none; display: grid; gap: 12px; }
.duty-list li {
  background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--ac, var(--deep));
  border-radius: 8px; padding: 16px 20px; font-size: 14.5px;
}
.page-ai  { --ac: var(--sec-ai); }
.page-sci { --ac: var(--sec-sci); }
.page-fac { --ac: var(--sec-fac); }
.page-ai  .sec-eyebrow { color: var(--sec-ai); }
.page-sci .sec-eyebrow { color: var(--sec-sci); }
.page-fac .sec-eyebrow { color: var(--sec-fac); }

/* ---------- staff list ---------- */
.staff-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 32px;
  row-gap: 14px;
}

.staff-list p {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 12px;
  row-gap: 2px;
  align-items: baseline;
  margin: 0;
  padding: 8px 0;
  border: none;
}

.staff-position {
  color: var(--ac, var(--deep));
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
}

.staff-name {
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.staff-affiliation {
  grid-column: 2;
  color: var(--ink-soft);
  font-size: 13px;
}

@media (max-width: 900px) {
  .staff-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .staff-list {
    grid-template-columns: 1fr;
    row-gap: 10px;
  }
}

/* ---------- results table ---------- */
.results-table { width: 100%; border-collapse: collapse; background: var(--white); font-size: 14px; }
.results-table th, .results-table td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
.results-table th { background: #eef4f4; font-size: 13px; white-space: nowrap; }
.table-scroll { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); }

/* ---------- sitemap ---------- */
.sitemap-tree { list-style: none; font-size: 15px; }
.sitemap-tree > li { margin-bottom: 18px; }
.sitemap-tree ul { list-style: none; margin: 8px 0 0 4px; padding-left: 20px; border-left: 2px solid var(--line); display: grid; gap: 8px; }
.sitemap-tree a { text-decoration: none; font-weight: 500; }
.sitemap-tree a:hover { text-decoration: underline; }

/* ---------- footer ---------- */
.site-footer { background: linear-gradient(160deg, #0b3d4a 0%, var(--deep) 60%, #14707f 100%); }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 48px 24px 32px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 36px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand { font-family: var(--font-display); color: #fff; font-size: 17px; font-weight: 700; }
.footer-brand small { display: block; font-family: var(--font-latin); font-size: 10px; letter-spacing: .16em; color: #8fa3ad; margin-top: 4px; }
.footer-note { font-size: 12.5px; margin-top: 14px; color: #9db0b9; }
.site-footer h3 { font-family: var(--font-latin); font-size: 11px; letter-spacing: .24em; text-transform: uppercase; color: #8fa3ad; margin-bottom: 12px; }
.site-footer ul { list-style: none; display: grid; gap: 8px; font-size: 13.5px; }
.site-footer a { color: #cfd8dd; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-bottom { border-top: 1px solid #33424d; margin-top: 36px; padding-top: 20px; font-size: 12px; color: #8fa3ad; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

.site-footer .footer-inner {
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

@media (max-width: 700px) {
  .site-footer .footer-inner {
    gap: 0.5rem;
  }
}

.site-footer .brand img {
  display: block;
  height: 54px;
  width: auto;
}

.site-footer .footer-grid {
  display: block;
  flex: 1;
}

.site-footer .footer-grid p {
  margin: 0;
  line-height: 1.45;
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; background: var(--deep); color: #fff; text-decoration: none;
  padding: 11px 26px; border-radius: 999px; font-weight: 700; font-size: 14px;
}
.btn:hover { background: var(--deep-dark); }
.btn.ghost { background: transparent; border: 1px solid var(--deep); color: var(--deep); }
.btn.ghost:hover { background: var(--deep); color: #fff; }