:root {
  --ink: #183138;
  --muted: #5d7277;
  --primary: #087b7d;
  --primary-dark: #075f63;
  --primary-soft: #eaf6f5;
  --line: #d9e4e5;
  --paper: #ffffff;
  --background: #f5f8f8;
  --content: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.8;
}

a { color: inherit; text-decoration: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: relative;
  z-index: 20;
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 4px 18px rgba(18, 61, 65, .05);
}

.header-main {
  max-width: var(--content);
  min-height: 94px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-brand { display: flex; align-items: center; gap: 15px; }
.brand-copy { display: flex; flex-direction: column; }
.brand-copy strong { font-size: 1.22rem; letter-spacing: .09em; }
.brand-copy small { color: var(--muted); font-size: .6rem; letter-spacing: .12em; }

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  position: relative;
}

.brand-mark i {
  position: absolute;
  width: 17px;
  height: 34px;
  border: 2px solid var(--primary);
  border-radius: 80% 20% 80% 20%;
  transform-origin: 50% 75%;
}
.brand-mark i:nth-child(1) { transform: rotate(0deg) translateY(-3px); }
.brand-mark i:nth-child(2) { transform: rotate(120deg) translateY(-3px); }
.brand-mark i:nth-child(3) { transform: rotate(240deg) translateY(-3px); }

.global-nav {
  min-height: 58px;
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  border-top: 1px solid #edf2f2;
}

.global-nav > a {
  padding: 16px 27px 14px;
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .04em;
  border-bottom: 3px solid transparent;
  transition: color .2s, border-color .2s;
}
.global-nav > a:hover { color: var(--primary); border-color: var(--primary); }
.global-nav > a.is-current { color: var(--primary); border-color: var(--primary); }

.site-search { display: flex; align-items: center; padding: 9px 0 9px 22px; }
.site-search input {
  width: 160px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid #bfd0d1;
  border-radius: 4px 0 0 4px;
  font: inherit;
  font-size: .82rem;
}
.site-search button {
  height: 38px;
  padding: 0 14px;
  color: #fff;
  background: var(--primary);
  border: 0;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
}
.menu-button { display: none; }

.hero {
  position: relative;
  min-height: 570px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(242, 250, 249, .98) 0%, rgba(242, 250, 249, .93) 45%, rgba(242, 250, 249, .12) 78%),
    radial-gradient(circle at 82% 42%, #b8dcda 0 2%, transparent 2.2%),
    linear-gradient(145deg, #dcefee 0%, #f6fbfb 48%, #8bbfbd 100%);
}

.hero-pattern {
  position: absolute;
  right: -80px;
  top: -170px;
  width: 650px;
  height: 650px;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(255,255,255,.12), 0 0 0 180px rgba(255,255,255,.08);
}
.hero-pattern::before,
.hero-pattern::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(7,123,125,.22);
  border-radius: 50%;
}
.hero-pattern::before { inset: 105px; }
.hero-pattern::after { inset: 215px; background: rgba(255,255,255,.2); }

.hero-inner { position: relative; z-index: 2; width: min(var(--content), calc(100% - 48px)); margin: 0 auto; }
.hero-label { margin: 0 0 16px; color: var(--primary); font-size: .72rem; font-weight: 700; letter-spacing: .2em; }
.hero h1 { margin: 0 0 24px; font-size: clamp(2.25rem, 5vw, 4rem); line-height: 1.38; letter-spacing: .06em; font-weight: 600; }
.hero-lead { margin: 0 0 36px; color: #405a60; font-size: 1rem; }

.primary-button,
.secondary-button,
.light-button {
  display: inline-flex;
  min-width: 210px;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: .05em;
  transition: transform .2s, background .2s;
}
.primary-button { color: #fff; background: var(--primary); }
.primary-button:hover { background: var(--primary-dark); transform: translateY(-2px); }
.secondary-button { color: var(--primary); border: 1px solid var(--primary); }
.secondary-button:hover { color: #fff; background: var(--primary); }

.section { max-width: var(--content); margin: 0 auto; padding: 104px 24px; }
.section-tint { max-width: none; padding-left: max(24px, calc((100% - var(--content)) / 2 + 24px)); padding-right: max(24px, calc((100% - var(--content)) / 2 + 24px)); background: var(--background); }
.section-heading span { color: var(--primary); font-size: .72rem; font-weight: 700; letter-spacing: .22em; }
.section-heading h2 { margin: 8px 0 12px; font-size: clamp(1.7rem, 3vw, 2.35rem); line-height: 1.45; letter-spacing: .06em; }
.section-heading p { margin: 0; color: var(--muted); }
.section-heading-center { text-align: center; }

.intro-grid { margin-top: 50px; display: grid; grid-template-columns: 1.35fr .75fr; gap: 70px; align-items: start; }
.intro-copy p { margin: 0 0 20px; color: #455e64; }
.text-link { color: var(--primary); font-weight: 700; border-bottom: 1px solid rgba(8,123,125,.35); }
.principle-card { padding: 40px; color: #fff; background: var(--primary-dark); box-shadow: 18px 18px 0 var(--primary-soft); }
.principle-card p { margin: 0; }
.principle-card .principle-en { margin-bottom: 18px; font-size: .7rem; letter-spacing: .2em; opacity: .7; }
.principle-card .principle-main { margin-bottom: 20px; font-size: 2rem; line-height: 1.5; letter-spacing: .1em; }

.card-grid { margin-top: 50px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.research-card { min-height: 280px; padding: 40px 32px; background: #fff; border-top: 4px solid var(--primary); box-shadow: 0 12px 30px rgba(18,61,65,.07); }
.research-card .card-icon { display: block; margin-bottom: 24px; color: var(--primary); font-size: 2rem; }
.research-card h3 { margin: 0 0 15px; font-size: 1.18rem; }
.research-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.section-action { margin-top: 44px; text-align: center; }

.news-header { display: flex; align-items: end; justify-content: space-between; margin-bottom: 38px; }
.news-list { border-top: 1px solid var(--line); }
.news-list a { display: grid; grid-template-columns: 130px 120px 1fr; gap: 20px; align-items: center; padding: 24px 12px; border-bottom: 1px solid var(--line); }
.news-list a:hover strong { color: var(--primary); }
.news-list time { color: var(--muted); font-size: .88rem; }
.news-category { padding: 3px 10px; color: var(--primary-dark); background: var(--primary-soft); text-align: center; font-size: .72rem; }
.news-list strong { font-size: .94rem; transition: color .2s; }

.contact-band { max-width: var(--content); margin: 0 auto 100px; padding: 48px 56px; display: flex; align-items: center; justify-content: space-between; gap: 40px; color: #fff; background: linear-gradient(120deg, var(--primary-dark), var(--primary)); }
.contact-band p { margin: 0 0 5px; font-size: .7rem; letter-spacing: .2em; opacity: .75; }
.contact-band h2 { margin: 0 0 5px; font-size: 1.55rem; }
.contact-band span { font-size: .88rem; opacity: .85; }
.light-button { flex: 0 0 auto; color: var(--primary-dark); background: #fff; }
.light-button:hover { transform: translateY(-2px); }

.staff-link-wrap { padding: 20px 24px 42px; text-align: center; }
.staff-link { color: #839194; font-size: .72rem; text-decoration: underline; text-underline-offset: 4px; }

.site-footer { color: #d6e2e3; background: #102b30; }
.footer-inner { max-width: var(--content); min-height: 150px; margin: 0 auto; padding: 35px 24px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 22px 40px; }
.footer-brand { display: flex; flex-direction: column; }
.footer-brand strong { color: #fff; letter-spacing: .08em; }
.footer-brand small { font-size: .56rem; letter-spacing: .13em; opacity: .65; }
.fiction-note { grid-column: 1; margin: 0; font-size: .7rem; }
.page-number { grid-column: 2; grid-row: 1 / span 2; margin: 0; font-family: Georgia, serif; font-size: .92rem; letter-spacing: .08em; }

.page-hero {
  min-height: 250px;
  display: grid;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(239,248,247,.98), rgba(239,248,247,.8)),
    repeating-linear-gradient(135deg, transparent 0 28px, rgba(8,123,125,.08) 28px 29px);
  border-bottom: 1px solid var(--line);
}
.page-hero-inner { width: min(var(--content), calc(100% - 48px)); margin: 0 auto; }
.page-hero p { margin: 0 0 7px; color: var(--primary); font-size: .72rem; font-weight: 700; letter-spacing: .22em; }
.page-hero h1 { margin: 0; font-size: clamp(2rem, 4vw, 3rem); font-weight: 600; letter-spacing: .1em; }

.breadcrumb { max-width: var(--content); margin: 0 auto; padding: 17px 24px; display: flex; gap: 12px; color: var(--muted); font-size: .74rem; border-bottom: 1px solid #edf2f2; }
.breadcrumb a:hover { color: var(--primary); }

.message-page { padding-top: 82px; }
.message-heading { margin-bottom: 54px; text-align: center; }
.message-heading > p { margin: 0 0 10px; color: var(--primary); font-size: .7rem; font-weight: 700; letter-spacing: .22em; }
.message-heading h2 { margin: 0; font-size: clamp(1.75rem, 3.5vw, 2.65rem); line-height: 1.6; letter-spacing: .07em; font-weight: 500; }
.message-layout { display: grid; grid-template-columns: 300px 1fr; gap: 74px; align-items: start; }

.director-panel { position: sticky; top: 30px; border: 1px solid var(--line); background: var(--background); }
.director-visual { height: 345px; overflow: hidden; background: #dce9e8; }
.director-visual img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center 22%; }
.director-caption { padding: 24px 27px 26px; display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 3px 15px; background: #fff; }
.director-caption small { color: var(--muted); font-size: .72rem; }
.director-caption strong { font-size: 1.3rem; letter-spacing: .13em; }
.director-caption span { grid-column: 2; color: var(--muted); font-size: .58rem; letter-spacing: .14em; }

.message-copy { color: #405a60; }
.message-copy > p { margin: 0 0 27px; }
.message-signature {
  margin-top: 50px;
  padding-top: 25px;
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  gap: 5px;
  border-top: 1px solid var(--line);
  text-align: right;
}
.message-signature span { color: var(--muted); font-size: .8rem; line-height: 1.5; letter-spacing: .04em; }
.message-signature strong { color: var(--ink); font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 1.65rem; line-height: 1.45; letter-spacing: .16em; }

.message-policy { padding: 80px 24px; text-align: center; background: var(--primary-soft); border-top: 1px solid #d9e9e8; }
.message-policy-inner { max-width: 760px; margin: 0 auto; }
.message-policy span { color: var(--primary); font-size: .7rem; font-weight: 700; letter-spacing: .22em; }
.message-policy h2 { margin: 10px 0 16px; font-size: clamp(1.55rem, 3vw, 2.15rem); letter-spacing: .07em; }
.message-policy p { margin: 0; color: var(--muted); }

.history-intro { padding-bottom: 88px; }
.history-intro-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.history-intro-copy { padding-top: 6px; color: #405a60; }
.history-intro-copy p { margin: 0 0 22px; }
.anniversary-panel { margin-top: 64px; min-height: 170px; padding: 30px 55px; display: flex; align-items: center; justify-content: center; gap: 54px; color: #fff; background: linear-gradient(115deg, var(--primary-dark), var(--primary)); overflow: hidden; position: relative; }
.anniversary-panel::after { content: ""; position: absolute; right: -80px; width: 260px; height: 260px; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; }
.anniversary-number { font-family: Georgia, serif; font-size: 5rem; line-height: 1; letter-spacing: -.05em; }
.anniversary-number small { margin-left: 6px; font-size: 1rem; letter-spacing: 0; }
.anniversary-panel strong { font-size: .72rem; letter-spacing: .25em; opacity: .7; }
.anniversary-panel p { margin: 5px 0 0; font-size: 1.25rem; letter-spacing: .08em; }

.timeline-section { padding-top: 94px; padding-bottom: 100px; }
.history-timeline { max-width: 850px; margin: 58px auto 0; padding: 0; list-style: none; position: relative; }
.history-timeline::before { content: ""; position: absolute; left: 125px; top: 13px; bottom: 13px; width: 1px; background: #b9d3d3; }
.history-timeline li { min-height: 116px; display: grid; grid-template-columns: 100px 1fr; gap: 54px; position: relative; }
.history-timeline li::before { content: ""; position: absolute; left: 118px; top: 10px; width: 11px; height: 11px; border: 2px solid var(--primary); border-radius: 50%; background: var(--background); }
.history-timeline time { color: var(--primary); font-family: Georgia, serif; font-size: 1.55rem; line-height: 1.3; text-align: right; }
.history-timeline h3 { margin: 0 0 8px; font-size: 1.03rem; letter-spacing: .04em; }
.history-timeline p { margin: 0; color: var(--muted); font-size: .9rem; }
.history-timeline .timeline-current::before { background: var(--primary); box-shadow: 0 0 0 6px rgba(8,123,125,.12); }
.history-timeline .timeline-current h3 { color: var(--primary-dark); }

.history-future { padding-top: 80px; padding-bottom: 100px; }
.history-future-card { padding: 66px 72px; text-align: center; border: 1px solid var(--line); position: relative; }
.history-future-card::before { content: ""; position: absolute; top: -1px; left: 50%; width: 90px; height: 4px; transform: translateX(-50%); background: var(--primary); }
.history-future-card > span { color: var(--primary); font-size: .68rem; font-weight: 700; letter-spacing: .23em; }
.history-future-card h2 { margin: 10px 0 20px; font-size: clamp(1.55rem, 3vw, 2.15rem); letter-spacing: .06em; }
.history-future-card p { margin: 0 0 31px; color: var(--muted); }

.research-intro { padding-bottom: 95px; }
.research-fields { margin-top: 66px; border-top: 1px solid var(--line); }
.research-field { min-height: 315px; padding: 50px 10px; display: grid; grid-template-columns: 150px 1fr; gap: 35px; border-bottom: 1px solid var(--line); }
.field-number { width: 92px; height: 92px; display: grid; place-items: center; color: var(--primary); background: var(--primary-soft); border: 1px solid #c9e0df; border-radius: 50%; font-family: Georgia, serif; font-size: 2rem; }
.field-body > span { color: var(--primary); font-size: .65rem; font-weight: 700; letter-spacing: .19em; }
.field-body h3 { margin: 5px 0 17px; font-size: 1.5rem; letter-spacing: .07em; }
.field-body > p { margin: 0 0 23px; color: #405a60; }
.field-body ul { margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.field-body li { padding: 5px 12px; color: var(--primary-dark); background: #f0f7f6; border: 1px solid #d9e8e7; font-size: .76rem; }

.research-process { padding-top: 94px; padding-bottom: 90px; }
.process-grid { margin-top: 45px; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: #fff; }
.process-grid article { min-height: 210px; padding: 32px 25px; position: relative; border-right: 1px solid var(--line); }
.process-grid article:last-child { border-right: 0; }
.process-grid article:not(:last-child)::after { content: "›"; position: absolute; z-index: 2; right: -12px; top: 50%; width: 23px; height: 23px; display: grid; place-items: center; transform: translateY(-50%); color: #fff; background: var(--primary); border-radius: 50%; line-height: 1; }
.process-grid span { color: var(--primary); font-family: Georgia, serif; font-size: .68rem; letter-spacing: .16em; }
.process-grid h3 { margin: 10px 0 12px; font-size: 1.03rem; }
.process-grid p { margin: 0; color: var(--muted); font-size: .82rem; }
.research-update-note { margin: 34px 0 0; padding: 17px 20px; color: #7c4545; background: #fff7f7; border-left: 3px solid #b34f4f; text-align: center; font-size: .86rem; }
.clue-letter, .clue-number { color: #b00020; font-weight: 800; }

.research-cooperation { padding-top: 82px; padding-bottom: 100px; }
.cooperation-card { padding: 52px 58px; display: flex; align-items: center; justify-content: space-between; gap: 50px; border: 1px solid var(--line); box-shadow: 0 12px 35px rgba(18,61,65,.06); }
.cooperation-card span { color: var(--primary); font-size: .68rem; font-weight: 700; letter-spacing: .2em; }
.cooperation-card h2 { margin: 6px 0 14px; font-size: 1.7rem; letter-spacing: .06em; }
.cooperation-card p { margin: 0; color: var(--muted); font-size: .9rem; }
.cooperation-card .primary-button { flex: 0 0 auto; }

.news-page { padding-top: 84px; padding-bottom: 110px; }
.important-notice { margin: 45px 0 60px; display: grid; grid-template-columns: 170px 1fr; border: 1px solid #e2cccc; background: #fffafa; }
.important-label { padding: 30px 24px; display: flex; align-items: center; justify-content: center; color: #fff; background: #944343; font-size: .83rem; font-weight: 700; letter-spacing: .06em; text-align: center; }
.important-content { padding: 31px 38px 34px; }
.important-content time { color: #8a6262; font-family: Georgia, serif; font-size: .8rem; letter-spacing: .06em; }
.important-content h3 { margin: 6px 0 12px; font-size: 1.18rem; letter-spacing: .04em; }
.important-content > p { margin: 0; color: #5f5555; font-size: .88rem; }
.important-content .news-clue-line { margin-top: 20px; padding: 13px 16px; color: #a10019; background: #fff; border-left: 3px solid #b00020; font-weight: 600; }

.news-filter { margin-bottom: 22px; display: flex; gap: 8px; }
.news-filter button { min-width: 110px; padding: 9px 16px; color: var(--muted); background: #fff; border: 1px solid var(--line); font: inherit; font-size: .78rem; cursor: default; }
.news-filter button.is-active { color: #fff; background: var(--primary); border-color: var(--primary); }
.news-archive { border-top: 1px solid var(--line); }
.news-archive article { padding: 27px 12px 28px; display: grid; grid-template-columns: 185px 1fr; gap: 4px 25px; border-bottom: 1px solid var(--line); }
.news-meta { grid-row: 1 / span 2; display: flex; align-items: flex-start; flex-direction: column; gap: 8px; }
.news-meta time { color: var(--muted); font-family: Georgia, serif; font-size: .87rem; }
.news-meta span { min-width: 86px; padding: 3px 9px; color: var(--primary-dark); background: var(--primary-soft); text-align: center; font-size: .68rem; }
.news-archive h3 { margin: 0; font-size: 1rem; letter-spacing: .03em; }
.news-archive p { margin: 5px 0 0; color: var(--muted); font-size: .83rem; }

.contact-page { max-width: 980px; padding-top: 84px; padding-bottom: 110px; }
.contact-guide { margin: 48px 0 34px; padding: 26px 32px; background: var(--background); border-left: 4px solid var(--primary); }
.contact-guide h3 { margin: 0 0 10px; font-size: .96rem; }
.contact-guide ul { margin: 0; padding-left: 1.3em; color: var(--muted); font-size: .8rem; }

.contact-form { border-top: 1px solid var(--line); }
.form-row { min-height: 104px; display: grid; grid-template-columns: 245px 1fr; border-bottom: 1px solid var(--line); }
.form-row-message { min-height: 230px; }
.form-label { padding: 31px 25px; display: flex; align-items: flex-start; gap: 11px; background: #f6f9f9; }
.form-label label { font-size: .9rem; font-weight: 700; }
.required, .optional { margin-top: 1px; padding: 1px 7px; color: #fff; font-size: .62rem; line-height: 1.7; border-radius: 2px; }
.required { background: #a84444; }
.optional { color: var(--muted); background: #dce5e5; }
.form-control { padding: 24px 30px; }
.form-control input,
.form-control select,
.form-control textarea { width: 100%; padding: 12px 14px; color: var(--ink); background: #fff; border: 1px solid #bdcdce; border-radius: 3px; font: inherit; font-size: .9rem; }
.form-control select { min-height: 49px; }
.form-control textarea { resize: vertical; line-height: 1.7; }
.form-control input:focus,
.form-control select:focus,
.form-control textarea:focus { outline: 2px solid rgba(8,123,125,.2); border-color: var(--primary); }
.privacy-check { margin: 34px auto 0; display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--muted); font-size: .83rem; cursor: pointer; }
.privacy-check input { width: 18px; height: 18px; accent-color: var(--primary); }
.form-error { margin: 18px 0 0; color: #a10019; text-align: center; font-size: .83rem; }
.form-submit { margin-top: 32px; text-align: center; }
.form-submit button { border: 0; font: inherit; cursor: pointer; }

.contact-complete { margin-top: 55px; padding: 74px 30px 70px; text-align: center; background: #fbfdfd; border: 1px solid var(--line); outline: none; }
.complete-mark { width: 66px; height: 66px; margin: 0 auto 22px; display: grid; place-items: center; color: #fff; background: var(--primary); border-radius: 50%; font-size: 1.7rem; }
.complete-en { margin: 0 0 8px; color: var(--primary); font-size: .68rem; font-weight: 700; letter-spacing: .23em; }
.contact-complete h2 { margin: 0; font-size: 1.75rem; letter-spacing: .06em; }
.complete-message { margin: 26px 0 34px; color: var(--muted); }
.contact-clue-number { display: inline-block; margin-top: 10px; color: #b00020; font-size: 1.55rem; font-weight: 800; line-height: 1; }

.archive-hero { background: linear-gradient(90deg, #edf5f4, #dcebea); }
.profile-page { max-width: 980px; padding-top: 68px; padding-bottom: 105px; }
.archive-status { margin-bottom: 26px; padding: 13px 18px; display: flex; align-items: center; justify-content: space-between; gap: 25px; color: #5f6d70; background: #f1f4f4; border: 1px solid #d9e0e1; }
.archive-status span { font-family: Georgia, serif; font-size: .67rem; letter-spacing: .18em; }
.archive-status p { margin: 0; font-size: .73rem; }

.profile-header { padding: 45px 48px; display: grid; grid-template-columns: 120px 1fr; gap: 25px 35px; color: #fff; background: linear-gradient(125deg, #173c42, #0a6668); position: relative; overflow: hidden; }
.profile-header::after { content: ""; position: absolute; right: -80px; top: -100px; width: 300px; height: 300px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 55px rgba(255,255,255,.035); }
.profile-monogram { width: 112px; height: 112px; display: grid; place-items: center; color: rgba(255,255,255,.9); border: 1px solid rgba(255,255,255,.55); border-radius: 50%; font-family: Georgia, serif; font-size: 1.6rem; letter-spacing: .08em; }
.profile-identity { position: relative; z-index: 1; }
.profile-identity p { margin: 4px 0 4px; font-size: .8rem; opacity: .75; }
.profile-identity h1 { margin: 0; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 2.2rem; font-weight: 500; letter-spacing: .16em; }
.profile-identity > span { font-family: Georgia, serif; font-size: .62rem; letter-spacing: .18em; opacity: .65; }
.profile-summary { grid-column: 1 / -1; margin: 8px 0 0; padding-top: 25px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.25); position: relative; z-index: 1; }
.profile-summary div { padding: 0 25px; border-right: 1px solid rgba(255,255,255,.18); }
.profile-summary div:first-child { padding-left: 0; }
.profile-summary div:last-child { border-right: 0; }
.profile-summary dt { font-size: .66rem; opacity: .6; }
.profile-summary dd { margin: 3px 0 0; font-size: .88rem; }

.profile-section { margin-top: 58px; display: grid; grid-template-columns: 180px 1fr; gap: 45px; }
.profile-section-title span { color: var(--primary); font-size: .63rem; font-weight: 700; letter-spacing: .18em; }
.profile-section-title h2 { margin: 4px 0 0; font-size: 1.35rem; letter-spacing: .08em; }
.career-table { border-top: 1px solid var(--line); }
.career-table > div { min-height: 66px; display: grid; grid-template-columns: 115px 1fr; align-items: center; border-bottom: 1px solid var(--line); }
.career-table time { color: var(--primary-dark); font-family: Georgia, serif; font-size: .9rem; }
.career-table p { margin: 0; color: #405a60; font-size: .9rem; }
.archive-redaction { padding: 0 5px; color: #0e1719; background: #0e1719; letter-spacing: .08em; user-select: none; }

.primary-research-card { padding: 31px 36px 33px; background: var(--background); border-left: 4px solid var(--primary); }
.primary-research-card > span { color: var(--primary); font-family: Georgia, serif; font-size: .64rem; letter-spacing: .17em; }
.primary-research-card h3 { margin: 8px 0 13px; font-size: 1.28rem; letter-spacing: .05em; }
.primary-research-card p { margin: 0; color: var(--muted); font-size: .86rem; }
.archive-note { margin: 60px 0 0 225px; padding: 22px 27px; color: #5c6668; background: #f7f8f8; border: 1px solid #dfe4e4; }
.archive-note strong { font-size: .78rem; }
.archive-note p { margin: 5px 0 0; font-size: .76rem; }

.restricted-public-page { background: #eef2f2; }
.restricted-hero { color: #e9f0f0; background: linear-gradient(105deg, #172c31, #294b50); border-bottom-color: #38575b; }
.restricted-hero p { color: #80b9b8; }
.restoration-page { max-width: 990px; padding-top: 62px; padding-bottom: 105px; }
.research-document-header { padding: 42px 48px 46px; color: #e8efef; background: #17282c; border-top: 5px solid #8e343b; position: relative; }
.document-classification { margin-bottom: 33px; display: flex; justify-content: space-between; gap: 25px; color: #a7b7b9; font-size: .65rem; letter-spacing: .13em; }
.document-classification strong { padding: 3px 9px; color: #f3d8da; background: #762e34; font-weight: 600; letter-spacing: .05em; }
.document-code { margin: 0 0 4px; color: #6fa6a5; font-family: Georgia, serif; font-size: .68rem; letter-spacing: .19em; }
.research-document-header h1 { margin: 0; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(1.7rem, 4vw, 2.5rem); font-weight: 500; letter-spacing: .08em; }
.document-subtitle { margin: 15px 0 0; color: #a8b7b9; font-size: .8rem; }
.document-warning { padding: 18px 25px; display: grid; grid-template-columns: 125px 1fr; gap: 20px; color: #715252; background: #f5e9e9; border: 1px solid #dcc6c6; border-top: 0; }
.document-warning strong { font-size: .8rem; }
.document-warning p { margin: 0; font-size: .75rem; }

.document-section { padding: 45px 46px; display: grid; grid-template-columns: 180px 1fr; gap: 42px; background: #fff; border: 1px solid #d8dede; border-top: 0; }
.document-section-heading span { color: #5b8585; font-family: Georgia, serif; font-size: .62rem; letter-spacing: .16em; }
.document-section-heading h2 { margin: 4px 0 0; font-size: 1.18rem; letter-spacing: .08em; }
.document-section-body { color: #3f5357; }
.document-section-body > p { margin: 0 0 18px; font-size: .86rem; }
.document-section-body > p:last-child { margin-bottom: 0; }
.document-list { margin: 0; padding: 0; list-style: none; }
.document-list li { padding: 9px 0 9px 20px; position: relative; border-bottom: 1px dotted #cbd4d5; font-size: .84rem; }
.document-list li::before { content: "—"; position: absolute; left: 0; color: var(--primary); }
.document-redaction { color: #17282c; background: #17282c; letter-spacing: .05em; user-select: none; }

.restoration-phases { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid #d2dada; }
.restoration-phases article { min-height: 175px; padding: 23px 20px; border-right: 1px solid #d2dada; }
.restoration-phases article:last-child { border-right: 0; }
.restoration-phases span { color: #598181; font-family: Georgia, serif; font-size: .59rem; letter-spacing: .13em; }
.restoration-phases h3 { margin: 8px 0 11px; font-size: .93rem; }
.restoration-phases p { margin: 0; color: var(--muted); font-size: .75rem; }
.restoration-phases .phase-restricted { color: #bec5c6; background: repeating-linear-gradient(135deg, #30393b 0 8px, #343e40 8px 16px); }
.restoration-phases .phase-restricted span,
.restoration-phases .phase-restricted p { color: #9fa9aa; }
.sealed-record { margin-top: 25px; padding: 24px; color: #aab5b6; background: #273235; text-align: center; }
.sealed-record span { font-family: Georgia, serif; font-size: .62rem; letter-spacing: .18em; }
.sealed-record p { margin: 5px 0 0; font-size: .75rem; }
.restoration-clue-line { margin: 0; padding: 18px 25px; color: #ad001b; background: #fff5f5; border: 1px solid #ddc2c2; border-top: 0; text-align: center; font-size: .84rem; font-weight: 600; }
.document-footer { padding: 16px 22px; display: flex; justify-content: space-between; color: #9ca9aa; background: #283538; font-size: .64rem; letter-spacing: .05em; }

@media (max-width: 900px) {
  .header-main { min-height: 76px; }
  .menu-button { width: 44px; height: 44px; display: grid; align-content: center; gap: 5px; padding: 9px; background: transparent; border: 0; }
  .menu-button span:not(.sr-only) { display: block; height: 2px; background: var(--ink); }
  .global-nav { display: none; padding: 6px 24px 22px; align-items: stretch; flex-direction: column; }
  .global-nav.is-open { display: flex; }
  .global-nav > a { padding: 13px 4px; border-bottom: 1px solid var(--line); }
  .site-search { padding: 18px 0 0; }
  .site-search input { width: 100%; }
  .hero { min-height: 520px; }
  .intro-grid { grid-template-columns: 1fr; gap: 45px; }
  .card-grid { grid-template-columns: 1fr; }
  .research-card { min-height: auto; }
  .message-layout { grid-template-columns: 250px 1fr; gap: 42px; }
  .history-intro-grid { gap: 44px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid article:nth-child(2) { border-right: 0; }
  .process-grid article:nth-child(2)::after { display: none; }
  .process-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 640px) {
  .brand-copy strong { font-size: 1rem; }
  .brand-copy small { display: none; }
  .brand-mark { width: 38px; height: 38px; transform: scale(.82); }
  .hero { min-height: 500px; }
  .hero-inner { width: calc(100% - 40px); }
  .hero h1 { font-size: 2rem; }
  .hero-lead br { display: none; }
  .section { padding: 76px 20px; }
  .section-tint { padding-left: 20px; padding-right: 20px; }
  .intro-grid { margin-top: 36px; }
  .principle-card { padding: 32px 28px; }
  .news-header { align-items: start; flex-direction: column; gap: 16px; }
  .news-list a { grid-template-columns: 1fr auto; gap: 8px 12px; padding: 20px 4px; }
  .news-list strong { grid-column: 1 / -1; }
  .contact-band { margin: 0 20px 70px; padding: 38px 28px; align-items: start; flex-direction: column; }
  .contact-band h2 { font-size: 1.25rem; }
  .light-button { width: 100%; min-width: 0; }
  .footer-inner { grid-template-columns: 1fr auto; padding: 30px 20px; }
  .fiction-note { grid-column: 1 / -1; }
  .page-number { grid-column: 2; grid-row: 1; }
  .page-hero { min-height: 190px; }
  .page-hero-inner { width: calc(100% - 40px); }
  .breadcrumb { padding-left: 20px; padding-right: 20px; }
  .message-page { padding-top: 62px; }
  .message-heading { margin-bottom: 38px; text-align: left; }
  .message-heading h2 br { display: none; }
  .message-layout { grid-template-columns: 1fr; gap: 40px; }
  .director-panel { position: static; max-width: 320px; }
  .director-visual { height: 280px; }
  .message-copy br { display: none; }
  .message-signature { gap: 4px; }
  .message-policy { padding: 62px 20px; }
  .message-policy p br { display: none; }
  .history-intro-grid { grid-template-columns: 1fr; gap: 28px; }
  .history-intro-copy br { display: none; }
  .anniversary-panel { padding: 30px 25px; justify-content: flex-start; gap: 25px; }
  .anniversary-number { font-size: 3.9rem; }
  .anniversary-panel p { font-size: 1rem; }
  .history-timeline { margin-top: 45px; }
  .history-timeline::before { left: 12px; }
  .history-timeline li { min-height: 145px; grid-template-columns: 1fr; gap: 8px; padding-left: 43px; }
  .history-timeline li::before { left: 5px; }
  .history-timeline time { text-align: left; }
  .history-future-card { padding: 52px 24px; }
  .history-future-card p br { display: none; }
  .research-intro .section-heading br { display: none; }
  .research-field { padding: 38px 0; grid-template-columns: 60px 1fr; gap: 18px; }
  .field-number { width: 54px; height: 54px; font-size: 1.3rem; }
  .field-body h3 { font-size: 1.25rem; }
  .field-body ul { align-items: flex-start; flex-direction: column; }
  .process-grid { grid-template-columns: 1fr; }
  .process-grid article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-grid article:nth-child(2) { border-bottom: 1px solid var(--line); }
  .process-grid article:last-child { border-bottom: 0; }
  .process-grid article:not(:last-child)::after { display: none; }
  .research-update-note { text-align: left; }
  .cooperation-card { padding: 38px 27px; align-items: flex-start; flex-direction: column; }
  .cooperation-card p br { display: none; }
  .cooperation-card .primary-button { width: 100%; }
  .news-page { padding-top: 62px; }
  .important-notice { grid-template-columns: 1fr; margin-top: 34px; }
  .important-label { padding: 10px 18px; justify-content: flex-start; }
  .important-content { padding: 26px 21px 28px; }
  .important-content br { display: none; }
  .news-filter { overflow-x: auto; padding-bottom: 5px; }
  .news-filter button { min-width: 98px; flex: 0 0 auto; }
  .news-archive article { padding: 23px 3px; grid-template-columns: 1fr; gap: 9px; }
  .news-meta { grid-row: auto; align-items: center; flex-direction: row; }
  .news-archive p { margin-top: 0; }
  .contact-page { padding-top: 62px; }
  .contact-page .section-heading p br { display: none; }
  .contact-guide { margin-top: 35px; padding: 23px 21px; }
  .form-row { grid-template-columns: 1fr; }
  .form-label { padding: 20px 16px 8px; background: transparent; }
  .form-control { padding: 7px 0 24px; }
  .form-row-message { min-height: 0; }
  .privacy-check { align-items: flex-start; justify-content: flex-start; }
  .privacy-check input { flex: 0 0 auto; margin-top: 4px; }
  .contact-complete { padding: 55px 20px 50px; }
  .contact-complete h2 { font-size: 1.4rem; }
  .profile-page { padding-top: 50px; }
  .archive-status { align-items: flex-start; flex-direction: column; gap: 3px; }
  .profile-header { padding: 34px 25px; grid-template-columns: 78px 1fr; gap: 22px; }
  .profile-monogram { width: 76px; height: 76px; font-size: 1.15rem; }
  .profile-identity h1 { font-size: 1.65rem; }
  .profile-summary { grid-template-columns: 1fr; gap: 13px; }
  .profile-summary div { padding: 0 0 12px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .profile-summary div:last-child { padding-bottom: 0; border-bottom: 0; }
  .profile-section { margin-top: 46px; grid-template-columns: 1fr; gap: 20px; }
  .career-table > div { grid-template-columns: 90px 1fr; }
  .primary-research-card { padding: 26px 23px; }
  .archive-note { margin: 45px 0 0; }
  .archive-note br { display: none; }
  .restoration-page { padding-top: 45px; }
  .research-document-header { padding: 30px 23px 34px; }
  .document-classification { align-items: flex-start; flex-direction: column; gap: 10px; }
  .document-warning { grid-template-columns: 1fr; gap: 3px; }
  .document-section { padding: 33px 23px; grid-template-columns: 1fr; gap: 20px; }
  .restoration-phases { grid-template-columns: 1fr; }
  .restoration-phases article { min-height: auto; border-right: 0; border-bottom: 1px solid #d2dada; }
  .restoration-phases article:last-child { border-bottom: 0; }
  .restoration-clue-line { text-align: left; }
  .document-footer { align-items: flex-start; flex-direction: column; gap: 4px; }
}