/* Adopted design A — shared by Home and the six interior pages. */
:root {
  --ink:#25342e; --muted:#657069; --accent:#385d4d; --line:#dde2dc;
  --soft:#f4f5f1; --page:44px; --max:1240px;
  --serif:Georgia,'Times New Roman','Yu Mincho','Hiragino Mincho ProN',serif;
  --sans:-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,'Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;
}
*,*::before,*::after {box-sizing:border-box}
html {scroll-behavior:auto}
body {margin:0;background:#fff;color:var(--ink);font:15px/1.85 var(--sans);-webkit-font-smoothing:antialiased}
a {color:inherit;text-decoration:none}
button {font:inherit;cursor:pointer}
img {display:block;width:100%;height:auto}
figure,p,h1,h2,h3 {margin:0}
button,a {-webkit-tap-highlight-color:transparent}
a:hover {text-decoration:underline;text-underline-offset:5px}
a:focus-visible,button:focus-visible {outline:2px solid var(--accent);outline-offset:5px}
::selection {background:#dce6db}
.site-container {width:min(var(--max),calc(100% - var(--page)*2));margin-inline:auto}
.skip-link {position:absolute;left:16px;top:-100px;background:var(--ink);color:#fff;padding:10px 20px;z-index:50}
.skip-link:focus {top:10px}
.site-header {position:relative;background:white;border-bottom:1px solid var(--line);z-index:5}
.header-inner {min-height:116px;display:flex;align-items:center;gap:32px}
.brand {display:flex;align-items:center;gap:15px;flex-shrink:0}
.brand:hover {text-decoration:none}
.brand-mark {width:31px;height:38px;flex:none;color:var(--accent)}
.brand-name {display:block;font:24px/1.2 var(--serif);letter-spacing:-.035em}
.brand-affiliation {display:block;font-size:9px;letter-spacing:.16em;line-height:1.5;margin-top:7px;color:var(--muted)}
.primary-nav {display:flex;align-items:center;gap:25px;margin-left:auto}
.nav-link {font-size:12px;white-space:nowrap;padding:12px 0}
.nav-link.active {color:var(--accent);position:relative}
.nav-link.active::after {position:absolute;bottom:4px;left:0;right:0;height:1px;background:currentColor;content:''}
.language-switch {display:flex;gap:9px;align-items:center;flex:none;border-left:1px solid var(--line);padding-left:22px;line-height:1}
.language-button {border:0;background:transparent;font-size:11px;color:var(--muted);padding:12px 0}
.language-button[aria-pressed=true] {color:var(--ink);font-weight:650}
.language-switch>span {color:#b1b9b2;font-size:10px}
.menu-toggle {display:none}
.eyebrow {font-size:10px;font-weight:600;letter-spacing:.17em;text-transform:uppercase;color:var(--accent)}
.text-link {font-size:12px;display:inline-flex;align-items:center;gap:24px;white-space:nowrap;padding-block:9px;border-bottom:1px solid #aab8ac}
.text-link:hover {text-decoration:none;border-color:var(--accent)}
.link-arrow {font-size:19px;font-weight:400;line-height:1}
.main-area {min-height:65vh}
.site-footer {border-top:1px solid var(--line);margin-top:84px}
.footer-inner {display:flex;align-items:center;justify-content:space-between;gap:25px;padding-block:35px}
.footer-name {font:18px/1.4 var(--serif)}
.footer-affiliation {font-size:10px;color:var(--muted);margin-top:7px}
.copyright {font-size:9px;letter-spacing:.025em;color:var(--muted)}
noscript p {padding:24px;background:var(--soft);color:var(--ink)}

/* Home: the approved panoramic A composition. */
.home-hero {padding-top:34px}
.hero-stage {position:relative;min-height:540px;display:flex;align-items:flex-end}
.hero-stage>.photo-frame {position:absolute;inset:0;height:100%}
.photo-frame {background:#d7ddd0;overflow:hidden}
.photo-frame img {height:100%;object-fit:cover;object-position:var(--photo-position,center)}
.hero-stage::after {content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,32,25,.08) 0%,rgba(15,32,25,.2) 20%,rgba(15,32,25,.86) 100%);pointer-events:none}
.hero-copy {position:relative;z-index:1;padding:100px 54px 45px;color:#fff;width:100%;max-width:1080px}
.hero-copy .eyebrow {color:#e0e9d9;margin-bottom:19px}
.hero-title {font:400 clamp(46px,4.7vw,68px)/1.09 var(--serif);letter-spacing:-.042em;max-width:950px;text-wrap:balance}
.photo-badge {position:absolute;top:24px;left:28px;font-size:9px;letter-spacing:.14em;line-height:1.6;color:#273d31;background:#ffffffde;padding:8px 11px;z-index:2}
.photo-badge span {display:block;letter-spacing:.03em;font-size:10px}
.photo-caption {display:flex;justify-content:space-between;gap:12px;font-size:10px;line-height:1.7;color:var(--muted);padding-top:10px}
.photo-kind {font-size:9px;letter-spacing:.12em;text-transform:uppercase}
.hero-support {display:flex;gap:70px;justify-content:space-between;align-items:center;padding-block:28px 43px;border-bottom:1px solid var(--line)}
.hero-subtitle {font:italic 22px/1.6 var(--serif);color:#526058;max-width:800px}
.hero-subtitle:lang(ja) {text-wrap:balance}
.hero-ja {font-size:13px;line-height:1.9;color:var(--muted);margin-top:19px}
.hero-action {align-self:flex-start;padding-top:6px}
.news-section {padding-block:68px 12px}
.news-layout {display:grid;grid-template-columns:230px minmax(0,1fr);gap:66px}
.news-heading h2 {font:400 45px/1.2 var(--serif);letter-spacing:-.035em;margin-top:10px}
.lang-ja .news-heading h2 {font:400 27px/1.5 var(--sans);letter-spacing:.015em}
.news-heading p {font-size:12px;color:var(--muted);margin-top:12px}
.news-heading .text-link {margin-top:26px}
.news-list {list-style:none;padding:0;margin:0;border-top:1px solid var(--ink)}
.news-item {border-bottom:1px solid var(--line)}
.news-link {display:grid;grid-template-columns:100px 100px minmax(0,1fr) 16px;gap:17px;align-items:baseline;padding:24px 0}
.news-link:hover {text-decoration:none}
.news-link:hover .news-row-title {text-decoration:underline;text-underline-offset:4px}
.news-link time {font-size:11px;font-variant-numeric:tabular-nums;letter-spacing:.025em;color:var(--muted)}
.news-category {font-size:9px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}
.news-row-title {font-size:13px;line-height:1.8;overflow-wrap:anywhere}
.news-arrow {color:var(--accent);font-size:16px;text-align:right}

/* Interior pages: readable text and generous white space. */
.page-head {padding:69px 0 40px}
.page-head .site-container {border-bottom:1px solid var(--line);padding-bottom:36px}
.page-head h1 {font:400 clamp(44px,4.8vw,65px)/1.15 var(--serif);letter-spacing:-.035em;margin-top:16px}
.page-secondary-title {font-size:14px;color:var(--muted);margin-top:14px}
.page-intro {max-width:800px;font-size:15px;line-height:1.95;color:var(--muted);margin-top:24px}
.research-entry {display:grid;grid-template-columns:230px minmax(0,1fr);gap:80px;padding:34px 0 58px;border-bottom:1px solid var(--line);margin-bottom:30px}
.research-entry:last-child {margin-bottom:0}
.research-num {font:400 45px/1 var(--serif);color:#829385;margin-bottom:24px;letter-spacing:-.04em}

.research-content h2 {font:400 clamp(26px,2.5vw,33px)/1.35 var(--serif);letter-spacing:-.02em;max-width:900px}
.research-secondary-title {font-size:14px;color:var(--accent);margin-top:14px;margin-bottom:26px}
.research-paras p {font-size:15px;line-height:2.05;margin-bottom:20px;color:#3b4940}
.research-paras p:last-child {margin-bottom:0}
.cite-link {color:var(--accent);text-decoration:underline;text-decoration-color:#aebdad;text-underline-offset:4px}
.members-list {padding-top:0}
.member-section {padding:20px 0 40px;border-bottom:1px solid var(--line);margin-bottom:26px}
.member-section:last-child {margin-bottom:0}
.member-section h2 {font-size:23px;line-height:1.5;font-weight:450;margin-bottom:24px;letter-spacing:-.02em}
.professor-card {padding:28px 30px;background:var(--soft);display:flex;align-items:center;justify-content:space-between;gap:30px}
.person-item {display:grid;grid-template-columns:230px minmax(0,1fr);gap:48px;padding:21px 0;border-bottom:1px solid #e9ece5}
.person-item:last-child {border:0}
.person-name {font-size:16px;font-weight:550;line-height:1.6}
.person-name .name-local {display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:3px}
.professor-card .person-name {font-size:22px;font-weight:450}
.person-desc {font-size:14px;line-height:1.9;color:#566259;overflow-wrap:anywhere}
.professor-card .person-desc {margin-top:12px}
.profile-link {font-size:12px;border-bottom:1px solid #aab8ac;padding-bottom:5px;white-space:nowrap}
.group-label {font-size:11px;font-weight:600;letter-spacing:.07em;color:var(--accent);margin-bottom:8px}
.profile-top {padding:12px 0 33px;border-bottom:1px solid var(--line)}
.person-heading {font:400 39px/1.3 var(--serif);letter-spacing:-.035em}
.lang-ja .person-heading {font-family:var(--sans);font-size:31px;letter-spacing:.03em}
.person-heading-secondary {font-size:13px;line-height:1.85;color:var(--muted);margin-top:6px}
.profile-position {font-size:14px;line-height:1.9;color:var(--muted);margin-top:12px}
.profile-section {display:grid;grid-template-columns:230px minmax(0,1fr);gap:80px;padding:39px 0;border-bottom:1px solid var(--line)}
.profile-section>h2 {font-size:17px;font-weight:500;line-height:1.7}
.cv-entry {padding-bottom:26px}
.cv-entry:last-child {padding-bottom:0}
.cv-date {font-size:12px;font-weight:500;color:var(--accent);margin-bottom:6px;line-height:1.7}
.cv-title {font-size:14px;line-height:1.9}
.cv-title strong {font-weight:550}
.cv-extra {font-size:13px;line-height:1.9;color:var(--muted);margin-top:6px}
.grant-count {font-size:12px;line-height:1.9;color:var(--muted);margin-bottom:27px}
.grant-entry {border-bottom:1px solid #e9ece5;padding-bottom:25px;margin-bottom:25px}
.grant-entry:last-child {border:0;margin-bottom:0;padding-bottom:0}
.grant-details {font-size:12px;line-height:1.9;color:var(--muted);margin-top:11px}
.grant-details a {display:inline-block;color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.cv-bullets {list-style:none;margin:0;padding:0}
.cv-bullets li {font-size:14px;line-height:1.9;margin-bottom:9px}
.cv-bullets li:last-child {margin-bottom:0}
.pubs-top-note {font-size:13px;color:var(--muted);line-height:1.9;max-width:900px;margin-bottom:34px}
.pub-section {padding-bottom:27px}
.pub-section>h2 {font-size:23px;font-weight:450;letter-spacing:-.02em;line-height:1.5;margin-bottom:25px}
.pub-year {display:grid;grid-template-columns:110px minmax(0,1fr);gap:30px;border-top:1px solid var(--line);padding:29px 0}
.pub-year h3 {font:400 31px/1.3 var(--serif);color:var(--accent)}
.pub-item {font-size:14px;line-height:1.95;color:#47544a;margin-bottom:24px;overflow-wrap:anywhere}
.pub-item:last-child {margin-bottom:0}
.pub-authors {color:#354439}
.pub-authors strong {font-weight:700;color:var(--ink)}
.pub-title {color:var(--ink)}
.pub-journal {font-style:italic}
.doi-link {color:var(--accent);font-size:11px;font-weight:600;letter-spacing:.04em;display:inline-block;margin-left:8px;border-bottom:1px solid #b6c3b2;line-height:1.5;white-space:nowrap}
.other-pub-list .pub-item {padding-block:18px;border-top:1px solid var(--line);margin:0}
.full-news {padding-top:0}
.news-article {display:grid;grid-template-columns:180px minmax(0,1fr);gap:65px;padding:16px 0 39px;border-bottom:1px solid var(--line);margin-bottom:33px;scroll-margin-top:35px}
.news-article:last-child {margin-bottom:0}
.news-article time {font-size:12px;letter-spacing:.03em;color:var(--accent);font-variant-numeric:tabular-nums}
.news-tags {font-size:9px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-top:7px}
.news-article h2 {font:400 26px/1.5 var(--serif);letter-spacing:-.015em;margin-bottom:18px}
.lang-ja .news-article h2 {font:450 22px/1.65 var(--sans);letter-spacing:0}
.news-article p {font-size:14px;line-height:2;color:#536156;margin-bottom:17px}
.detail-link {display:inline-block;font-size:12px;color:var(--accent);border-bottom:1px solid #aab8ac;padding-bottom:3px;margin-top:1px}
.contact-layout {display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:100px;padding-top:13px}
.contact-layout h2 {font-size:26px;font-weight:450;margin-bottom:29px;line-height:1.5}
.contact-row {font-size:15px;line-height:2;color:#445449;margin-bottom:28px}
.contact-label {display:block;font-size:10px;font-weight:600;letter-spacing:.09em;color:var(--accent);margin-bottom:7px;text-transform:uppercase}
.contact-note {font-size:12px;color:var(--muted)}
.contact-card {padding:28px;background:var(--soft);align-self:start}
.contact-card-title {font-size:17px;font-weight:450;margin-bottom:15px}
.contact-card p {font-size:13px;line-height:1.95;color:var(--muted);margin-bottom:18px}
.plain-external {font-size:12px;border-bottom:1px solid #aab8ac;padding-bottom:3px}

@media(min-width:1700px) {.hero-stage {min-height:580px}}
@media(max-width:1100px) {
  :root {--page:32px}
  .header-inner {gap:23px}.brand-name {font-size:22px}.primary-nav {gap:17px}.language-switch {padding-left:16px}
  .news-layout {grid-template-columns:180px minmax(0,1fr);gap:35px}
  .news-link {grid-template-columns:90px 85px minmax(0,1fr) 16px;gap:12px}.hero-support {gap:35px}
  .research-entry,.profile-section {grid-template-columns:180px minmax(0,1fr);gap:48px}
  .person-item {grid-template-columns:200px minmax(0,1fr);gap:35px}
  .news-article {grid-template-columns:150px minmax(0,1fr);gap:40px}
  .contact-layout {gap:60px;grid-template-columns:minmax(0,1fr) 280px}
}
@media(max-width:980px) {
  .header-inner {min-height:95px;gap:22px}.brand-affiliation {font-size:8px}.brand-name {font-size:23px}
  .language-switch {margin-left:auto;border:0;padding:0}
  .menu-toggle {width:42px;height:42px;flex:none;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;background:white;border:1px solid var(--line)}
  .menu-toggle span {display:block;width:16px;height:1px;background:var(--ink)}
  .primary-nav {display:none;position:absolute;left:0;right:0;top:100%;background:#fff;padding:10px var(--page) 20px;border-bottom:1px solid var(--line);margin:0;box-shadow:0 14px 20px #25342e08}
  .primary-nav.is-open {display:grid;grid-template-columns:repeat(3,1fr);gap:8px 24px}
  .primary-nav a {font-size:13px}.nav-link.active::after {right:auto;width:30px}
  .hero-stage {min-height:510px}.hero-copy {padding:100px 35px 35px}.hero-title {font-size:56px}
  .hero-support {display:block}.hero-action {margin-top:20px}
  .news-link {grid-template-columns:100px minmax(0,1fr) 16px}.news-category {display:none}
  .research-entry {grid-template-columns:145px minmax(0,1fr);gap:35px}
  .profile-section {grid-template-columns:160px minmax(0,1fr);gap:35px}
}
@media(max-width:700px) {
  :root {--page:23px}
  .header-inner {min-height:87px;gap:15px}.brand {gap:10px}.brand-name {font-size:21px}.brand-mark {width:25px;height:31px}
  .brand-affiliation {font-size:7px;letter-spacing:.09em}.language-switch {gap:7px}.language-button {font-size:10px}
  .menu-toggle {width:36px;height:38px}.eyebrow {font-size:9px;letter-spacing:.12em}
  .site-footer {margin-top:56px}.footer-inner {display:block;padding-block:28px}.copyright {margin-top:20px}.footer-affiliation {font-size:9px;line-height:1.9}
  .home-hero {padding-top:22px}.hero-stage {min-height:510px}.hero-copy {padding:100px 25px 30px}
  .hero-title {font-size:clamp(37px,7vw,49px);text-wrap:initial}.hero-copy .eyebrow {font-size:8px;letter-spacing:.1em;margin-bottom:18px}
  .photo-badge {top:20px;left:25px}.hero-subtitle {font-size:21px}.hero-support {padding-block:24px 35px}.hero-ja {font-size:12px}
  .photo-caption {font-size:9px;gap:10px}.photo-kind {font-size:8px}
  .news-layout {grid-template-columns:1fr;gap:26px}.news-section {padding-block:44px 2px}
  .news-heading {display:grid;grid-template-columns:1fr auto;align-items:center;gap:0 20px}.news-heading>.eyebrow {grid-column:1/-1}
  .news-heading h2 {font-size:36px;margin-top:7px}.lang-ja .news-heading h2 {font-size:23px}.news-heading p {display:none}
  .news-heading .text-link {grid-column:2;grid-row:2;margin:6px 0 0;font-size:11px;gap:13px}
  .news-link {grid-template-columns:83px minmax(0,1fr) 12px;gap:12px;padding-block:21px}.news-row-title {font-size:13px;line-height:1.85}.news-link time {font-size:10px}
  .page-head {padding:42px 0 24px}.page-head .site-container {padding-bottom:28px}.page-head h1 {font-size:46px;margin-top:12px}.page-intro {font-size:14px;line-height:1.95;margin-top:21px}.page-secondary-title {font-size:13px;margin-top:11px}
  .research-entry {grid-template-columns:1fr;gap:24px;padding:12px 0 38px;margin-bottom:30px}
  .research-aside {display:grid;grid-template-columns:54px 1fr;gap:15px;align-items:center}.research-num {font-size:35px;margin:0}
  .research-content h2 {font-size:28px;line-height:1.35}.research-secondary-title {font-size:13px;margin-top:14px;margin-bottom:22px}.research-paras p {font-size:14px;line-height:2.05}
  .member-section {padding:10px 0 29px;margin-bottom:24px}.member-section h2 {font-size:22px;margin-bottom:18px}
  .professor-card {display:block;padding:24px}.professor-card .person-name {font-size:22px}.professor-card .profile-link {display:inline-block;margin-top:20px}
  .person-item {grid-template-columns:1fr;gap:10px;padding-block:18px}.person-desc {font-size:13px}.person-name {font-size:16px}.group-label {font-size:10px}
  .profile-top {padding-top:6px;padding-bottom:25px}.person-heading {font-size:34px}.lang-ja .person-heading {font-size:28px}.profile-position {font-size:13px}
  .profile-section {grid-template-columns:1fr;gap:21px;padding-block:29px}.profile-section>h2 {font-size:19px}.cv-title {font-size:14px}.cv-extra {font-size:13px}
  .pubs-top-note {font-size:12px;margin-bottom:29px}.pub-section>h2 {font-size:22px}.pub-year {grid-template-columns:1fr;gap:17px;padding-block:24px}.pub-year h3 {font-size:29px}.pub-item {font-size:13px;line-height:1.95;margin-bottom:23px}
  .news-article {grid-template-columns:1fr;gap:14px;margin-bottom:25px;padding:5px 0 28px}.news-article time {font-size:11px}.news-tags {display:inline-block;margin:0 0 0 13px;font-size:8px}.news-article h2 {font-size:24px;margin-bottom:16px}.lang-ja .news-article h2 {font-size:20px}.news-article p {font-size:14px;line-height:2}
  .contact-layout {grid-template-columns:1fr;gap:15px;padding-top:5px}.contact-layout h2 {font-size:23px}.contact-row {font-size:14px}.contact-card {max-width:460px;padding:25px}.contact-note {font-size:11px}
}
@media(max-width:380px) {
  :root {--page:18px}.header-inner {gap:10px}.brand-mark {display:none}.brand-name {font-size:18px}.brand-affiliation {font-size:6.7px}.language-switch {gap:5px}
  .hero-copy {padding-inline:20px}.hero-title {font-size:36px}.news-link {grid-template-columns:75px minmax(0,1fr) 12px;gap:10px}
  .page-head h1 {font-size:42px}.research-content h2 {font-size:26px}
}
@media(prefers-reduced-motion:reduce) {*,*::before,*::after {scroll-behavior:auto!important}}

/* Japanese header only: retain the English header and all page content styles. */
.lang-ja .site-header .brand-name {font-family:'Yu Mincho','Hiragino Mincho ProN',serif;font-size:23px;letter-spacing:.04em}
.lang-ja .site-header .brand-affiliation {font-size:9px;letter-spacing:.06em}
.lang-ja .site-header .primary-nav {gap:22px}
@media(max-width:1100px) {
  .lang-ja .site-header .brand-name {font-size:22px}
  .lang-ja .site-header .primary-nav {gap:16px}
}
@media(max-width:980px) {
  .lang-ja .site-header .brand-affiliation {font-size:8.5px}
  .lang-ja .site-header .primary-nav.is-open {gap:8px 16px}
}
@media(max-width:700px) {
  .lang-ja .site-header .brand-name {font-size:20px}
  .lang-ja .site-header .brand-affiliation {font-size:8px;letter-spacing:.03em}
}
@media(max-width:380px) {
  .lang-ja .site-header .brand-name {font-size:18px}
  .lang-ja .site-header .brand-affiliation {font-size:7px}
}