:root{
  --wp--preset--spacing--10:.5rem;
  --wp--preset--spacing--20:1rem;
  --wp--preset--spacing--30:1.5rem;
  --wp--preset--spacing--40:2rem;
  --wp--preset--spacing--50:3rem;
  --wp--preset--spacing--60:4rem;
  --wp--preset--spacing--70:5rem;
  --wp--preset--spacing--80:6rem;
  --content:1120px;
  --text:#202428;
  --muted:#646a70;
  --border:#d9dee3;
  --base:#fff;
  --base2:#f7f7f5;
  --accent:#edf6f7;
  --accent4:#f2f1ff;
  --accent5:#f4f7fb;
  --contrast:#111;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:var(--base);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.75}
a{color:#145da0;text-underline-offset:.16em}
img{max-width:100%;height:auto}

/* Header: two rows on desktop so the navigation never crushes the lab title. */
.site-header{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  padding:.72rem max(1rem,calc((100vw - var(--content))/2)) .58rem;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto auto;
  grid-template-areas:"brand lang menu" "nav nav nav";
  column-gap:.8rem;row-gap:.45rem;
  align-items:center;
}
.brand{grid-area:brand;min-width:0}
.brand-title{display:inline-block;font-weight:700;text-decoration:none;color:var(--text);font-size:.9rem;line-height:1.4}
.global-language-switch{
  grid-area:lang;display:inline-flex;flex:0 0 auto;
  border:1px solid var(--border);border-radius:999px;overflow:hidden;background:#fff;
}
.global-language-switch a{min-width:2.9rem;padding:.32rem .6rem;text-align:center;text-decoration:none;color:var(--text);font-weight:700;font-size:.78rem;line-height:1.25}
.global-language-switch a+a{border-left:1px solid var(--border)}
.global-language-switch a:hover{background:#f2f4f6}
html[data-ui-lang="ja"] .global-language-switch [data-lang-choice="ja"],
html[data-ui-lang="en"] .global-language-switch [data-lang-choice="en"]{background:var(--contrast);color:#fff}
.menu-toggle{grid-area:menu;display:none;border:1px solid var(--border);background:#fff;border-radius:.4rem;padding:.38rem .65rem;font-size:1.1rem}
.site-nav{grid-area:nav;display:flex;gap:.15rem .45rem;flex-wrap:wrap;align-items:center;border-top:1px solid #edf0f2;padding-top:.42rem}
.site-nav a{color:var(--text);text-decoration:none;font-size:.84rem;padding:.28rem .42rem;border-radius:.32rem}
.site-nav a:hover{background:#f1f4f6}
.site-nav a.active{background:#eef2f5;font-weight:650}

.site-main{min-height:60vh;padding-top:.4rem}
.site-main>h1,.site-main>h2,.site-main>h3,.site-main>h4,.site-main>p,.site-main>ul,.site-main>ol,.site-main>figure,.site-main>.wp-block-columns,.site-main>.wp-block-separator{
  width:min(var(--content),calc(100% - 2rem));max-width:var(--content);margin-left:auto;margin-right:auto;
}
.wp-block-group{padding-left:max(1rem,calc((100vw - var(--content))/2));padding-right:max(1rem,calc((100vw - var(--content))/2))}
.wp-block-group .wp-block-group{padding-left:0;padding-right:0}
.alignwide{width:min(100%,var(--content));max-width:var(--content);margin-left:auto;margin-right:auto}
.alignfull{max-width:none;width:100%}
.aligncenter{margin-left:auto!important;margin-right:auto!important;text-align:center}

.wp-block-columns{display:flex;gap:2rem;align-items:stretch;width:min(100%,var(--content));max-width:var(--content);margin:1.5rem auto}
.wp-block-column{min-width:0;flex:1 1 0}
.is-vertically-aligned-center{align-self:center}
.are-vertically-aligned-center{align-items:center}
.wp-block-image{margin:1rem auto}
.wp-block-image img{display:block;max-width:100%}
.is-style-rounded img{border-radius:.65rem}
.wp-block-cover{position:relative;overflow:hidden;display:grid;place-items:center;color:#fff;isolation:isolate}
.wp-block-cover__image-background{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.wp-block-cover:after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.28);z-index:-1}
.wp-block-cover__inner-container{width:min(var(--content),calc(100% - 2rem));margin:auto}
.wp-block-separator{border:0;border-top:1px solid var(--border);margin-top:2rem;margin-bottom:2rem}
.wp-block-buttons{display:flex;align-items:center;justify-content:center;gap:.75rem;flex-wrap:wrap;margin:1rem 0}
.wp-block-button__link{display:inline-block;padding:.68rem 1rem;border-radius:.35rem;background:var(--contrast);color:#fff;text-decoration:none}
.wp-block-button.is-style-outline .wp-block-button__link{background:transparent;color:inherit;border:1px solid currentColor}
.wp-block-embed{margin:1rem 0}
.wp-block-embed__wrapper{position:relative;aspect-ratio:16/9}
.wp-block-embed__wrapper iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.wp-block-separator{clear:both}

.has-base-background-color{background:var(--base)}
.has-base-2-background-color{background:var(--base2)}
.has-accent-background-color{background:var(--accent)}
.has-accent-4-background-color{background:var(--accent4)}
.has-accent-5-background-color{background:var(--accent5)}
.has-contrast-background-color{background:var(--contrast);color:#fff}
.has-contrast-color{color:var(--contrast)}
.has-text-align-center{text-align:center}.has-text-align-left{text-align:left}.has-text-align-right{text-align:right}
.has-small-font-size{font-size:.9rem!important}
.has-medium-font-size{font-size:1.22rem!important;line-height:1.65}
.wp-block-spacer{display:block}
figure{margin:1rem 0}
figcaption{font-size:.85rem;color:var(--muted);line-height:1.5;margin-top:.45rem}
h1,h2,h3,h4{line-height:1.35}
h1{font-size:clamp(2rem,4vw,3.4rem)}
h2{font-size:clamp(1.5rem,3vw,2.2rem)}
h3{font-size:clamp(1.2rem,2.4vw,1.65rem)}
h4{font-size:1.08rem}
table{border-collapse:collapse;width:min(var(--content),calc(100% - 2rem));max-width:var(--content);margin:1rem auto}
th,td{border:1px solid var(--border);padding:.6rem;vertical-align:top}
mark{padding:0 .08em}

/* Members: the export contains editor placeholder columns. v5 removes the empty ones and
   lays the remaining cards out as a stable responsive four-column grid. */
.page-members .wp-block-columns{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.5rem;align-items:start}
.page-members .wp-block-image{margin:.5rem auto .7rem}
.page-members .wp-block-image img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:.2rem}
.page-members .wp-block-heading.has-small-font-size{font-size:.86rem!important;line-height:1.45;margin-top:.4rem}
.page-members .is-team-heading{margin-top:.5rem}

/* Research sections rely heavily on WordPress background presets. */
.page-research .wp-block-group.alignfull.has-background{padding-top:2.6rem;padding-bottom:2.6rem}
.page-research .wp-block-group.alignfull.has-background+.wp-block-group.alignfull.has-background{margin-top:0}
.page-research .wp-block-embed{width:100%}

/* Professor pages are long-form text; keep line length comfortable. */
.page-professor .site-main>p,.page-professor .site-main>ul,.page-professor .site-main>h3,.page-professor .site-main>h4,.page-professor .site-main>.wp-block-separator{max-width:960px}
.page-professor .site-main>p,.page-professor .site-main>ul{line-height:1.9}

.site-footer{margin-top:4rem;border-top:1px solid var(--border);background:var(--base2);padding:2.3rem max(1rem,calc((100vw - var(--content))/2));display:grid;grid-template-columns:1fr 1fr;gap:2rem}
.site-footer h2{font-size:1rem}.site-footer ul{margin:0;padding-left:1.2rem}.small{font-size:.8rem;color:var(--muted)}
.migration-note{max-width:var(--content);margin:1rem auto;padding:1rem;border:1px solid #d4a72c;background:#fff8c5;border-radius:.4rem}

/* Only source-language blocks that truly exist as a pair are switched. */
html[data-ui-lang="ja"] [data-lang="en"]{display:none!important}
html[data-ui-lang="en"] [data-lang="ja"]{display:none!important}

@media(max-width:900px){
  .site-header{grid-template-columns:minmax(0,1fr) auto auto;grid-template-areas:"brand lang menu" "nav nav nav";align-items:center}
  .menu-toggle{display:block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--border);border-top:0;padding:1rem;flex-direction:column;align-items:stretch}
  .menu-open .site-nav{display:flex}
  .site-nav a{font-size:.95rem;padding:.55rem .7rem}
  .wp-block-columns{flex-direction:column;width:min(100%,calc(100% - 2rem));gap:1.25rem}
  .wp-block-column[style*="flex-basis"]{flex-basis:auto!important}
  .page-members .wp-block-columns{grid-template-columns:repeat(2,minmax(0,1fr));width:100%}
  .site-footer{grid-template-columns:1fr}
}
@media(max-width:560px){
  .brand-title{font-size:.72rem}
  .global-language-switch a{min-width:2.65rem;padding:.3rem .48rem;font-size:.73rem}
  .page-members .wp-block-columns{grid-template-columns:1fr}
  .page-research .wp-block-group.alignfull.has-background{padding-top:1.8rem;padding-bottom:1.8rem}
}


/* v6: restore the Hashimoto Lab logo beside the site title. */
.brand{display:flex;align-items:center;gap:.72rem}
.brand-logo-link{display:flex;align-items:center;justify-content:center;flex:0 0 auto;text-decoration:none}
.brand-logo{display:block;width:46px;height:52px;object-fit:contain}

/* Keep the robotic manipulation demo prominent without stretching it across the full content width. */
.page-research .research-manipulation-video{width:min(720px,100%);max-width:720px;margin:1.5rem auto 0}

.sitemap-footer-link{margin:.7rem 0 0;font-size:.9rem}
.sitemap-footer-link a{color:inherit}
.page-sitemap .sitemap-intro{max-width:900px}
.page-sitemap .sitemap-grid{width:min(var(--content),calc(100% - 2rem));max-width:var(--content);margin:1.5rem auto 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.25rem}
.page-sitemap .sitemap-card{border:1px solid var(--border);border-radius:.65rem;padding:1.2rem 1.35rem;background:#fff}
.page-sitemap .sitemap-card h2{font-size:1.15rem;margin:.1rem 0 .65rem}
.page-sitemap .sitemap-card ul{margin:.2rem 0 0;padding-left:1.25rem}
.page-sitemap .sitemap-card li+li{margin-top:.35rem}

@media(max-width:900px){
  .page-sitemap .sitemap-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .brand{gap:.5rem}
  .brand-logo{width:36px;height:41px}
}


/* Local editor managed content */
.editor-managed-section{width:min(100%,var(--content));max-width:var(--content);margin:0 auto;padding:0 1rem}
.member-group{margin:1.5rem auto 2.25rem}
.member-group-title{margin:.5rem 0 1rem}
.member-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.5rem;align-items:start}
.member-card{text-align:center;min-width:0}
.member-card figure{margin:.5rem auto .7rem}
.member-card img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:.2rem;display:block}
.member-card h3{font-size:.86rem;line-height:1.45;margin:.4rem 0 0;font-weight:600}
.member-card a{color:inherit}
.alumni-years{columns:2;column-gap:3rem}
.alumni-year{break-inside:avoid;margin:0 0 1.25rem}
.alumni-year h5{font-size:1rem;margin:.2rem 0 .35rem}
.alumni-year p{margin:.15rem 0;line-height:1.6}
.publication-year{width:min(100%,960px);margin:0 auto 2rem;padding:0 1rem}
.publication-entry{line-height:1.75;margin:0 0 1rem}
.gallery-managed{width:min(100%,var(--content));max-width:var(--content);margin:0 auto;padding:0 1rem}
.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2rem;align-items:start}
.gallery-card{margin:0}
.gallery-card img{width:100%;height:auto;object-fit:cover;display:block;border-radius:.25rem}
.gallery-card figcaption{font-size:.9rem;line-height:1.55;margin-top:.55rem}
@media(max-width:900px){.member-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.alumni-years{columns:1}}
@media(max-width:640px){.member-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery-grid{grid-template-columns:1fr}}

/* v9: bilingual laboratory title in the header. */
.brand-title-en{font-size:.86em;line-height:1.35}


/* v10: English brand hierarchy and centered professor portrait. */
.brand-title-en .brand-en-lab{
  font-size:1.08em;
  font-weight:800;
  line-height:1.25;
}
.brand-title-en .brand-en-school{
  font-size:.84em;
  font-weight:600;
  line-height:1.35;
}
.page-professor .site-main>figure.wp-block-image.aligncenter{
  display:flex;
  justify-content:center;
  margin-left:auto;
  margin-right:auto;
}
.page-professor .site-main>figure.wp-block-image.aligncenter img{
  display:block;
  margin-left:auto;
  margin-right:auto;
}


/* v11: compact mobile layout + accessible hamburger navigation. */
.menu-toggle{
  width:2.55rem;height:2.35rem;padding:0;
  align-items:center;justify-content:center;cursor:pointer;
}
.menu-icon{width:1.18rem;height:.9rem;display:flex;flex-direction:column;justify-content:space-between}
.menu-icon span{display:block;height:2px;width:100%;background:currentColor;border-radius:999px;transition:transform .18s ease,opacity .18s ease}
.menu-open .menu-icon span:nth-child(1){transform:translateY(.4rem) rotate(45deg)}
.menu-open .menu-icon span:nth-child(2){opacity:0}
.menu-open .menu-icon span:nth-child(3){transform:translateY(-.4rem) rotate(-45deg)}

/* Long publication URLs/citations must never force horizontal scrolling. */
.publication-entry,.publication-entry a,.publication-year a{overflow-wrap:anywhere;word-break:break-word}

@media(max-width:900px){
  body{font-size:.95rem;line-height:1.68}
  .site-header{
    padding:.52rem .72rem;
    grid-template-columns:minmax(0,1fr) auto auto;
    grid-template-areas:"brand lang menu";
    column-gap:.5rem;row-gap:0;
  }
  .brand{gap:.48rem}
  .brand-logo{width:36px;height:41px}
  .brand-title{font-size:.72rem;line-height:1.28}
  .brand-title-en .brand-en-lab{font-size:1em;line-height:1.18}
  .brand-title-en .brand-en-school{font-size:.72em;line-height:1.22}
  .global-language-switch a{min-width:2.45rem;padding:.26rem .4rem;font-size:.7rem}
  .menu-toggle{display:flex}
  .site-nav{
    display:none;
    position:absolute;left:.65rem;right:.65rem;top:calc(100% + .25rem);
    z-index:30;background:#fff;border:1px solid var(--border);border-radius:.65rem;
    box-shadow:0 10px 28px rgba(0,0,0,.12);
    padding:.45rem;flex-direction:column;align-items:stretch;gap:.08rem;
    max-height:calc(100vh - 5.5rem);overflow:auto;
  }
  .menu-open .site-nav{display:flex}
  .site-nav a{font-size:.88rem;padding:.54rem .7rem;border-radius:.42rem}
  .site-nav a.active{background:#eef2f5}

  .site-main{padding-top:.2rem}
  .wp-block-columns{gap:1rem}
  .site-footer{margin-top:2.5rem;padding:1.6rem .9rem;gap:1rem;font-size:.9rem}
  .site-footer h2{font-size:.95rem}
}

@media(max-width:640px){
  :root{
    --wp--preset--spacing--10:.35rem;
    --wp--preset--spacing--20:.7rem;
    --wp--preset--spacing--30:1rem;
    --wp--preset--spacing--40:1.15rem;
    --wp--preset--spacing--50:1.65rem;
    --wp--preset--spacing--60:2.2rem;
    --wp--preset--spacing--70:2.8rem;
    --wp--preset--spacing--80:3.4rem;
  }
  body{font-size:.9rem;line-height:1.62}
  .site-header{padding:.44rem .55rem;column-gap:.38rem}
  .brand{gap:.38rem}
  .brand-logo{width:31px;height:36px}
  .brand-title{font-size:.64rem;line-height:1.22}
  .brand-title-en .brand-en-lab{font-size:.98em}
  .brand-title-en .brand-en-school{font-size:.67em;line-height:1.18}
  .global-language-switch a{min-width:2.2rem;padding:.24rem .34rem;font-size:.65rem}
  .menu-toggle{width:2.2rem;height:2.1rem;border-radius:.36rem}
  .menu-icon{width:1rem;height:.76rem}
  .menu-open .menu-icon span:nth-child(1){transform:translateY(.33rem) rotate(45deg)}
  .menu-open .menu-icon span:nth-child(3){transform:translateY(-.33rem) rotate(-45deg)}
  .site-nav{left:.45rem;right:.45rem;top:calc(100% + .18rem);padding:.35rem}
  .site-nav a{font-size:.82rem;padding:.48rem .62rem}

  h1{font-size:1.72rem}
  h2{font-size:1.36rem}
  h3{font-size:1.12rem}
  h4{font-size:.98rem}
  .has-medium-font-size{font-size:1.02rem!important}
  .has-small-font-size{font-size:.82rem!important}
  .site-main>h1,.site-main>h2,.site-main>h3,.site-main>h4,.site-main>p,.site-main>ul,.site-main>ol,.site-main>figure,.site-main>.wp-block-columns,.site-main>.wp-block-separator{
    width:min(var(--content),calc(100% - 1.35rem));
  }
  .wp-block-group{padding-left:.68rem;padding-right:.68rem}
  .site-main .wp-block-group.alignfull.has-background{padding-left:.75rem!important;padding-right:.75rem!important}
  .wp-block-columns{width:min(100%,calc(100% - 1.35rem));gap:.85rem;margin:1rem auto}
  .wp-block-button__link{font-size:.84rem;padding:.54rem .78rem}
  .wp-block-separator{margin-top:1.25rem;margin-bottom:1.25rem}
  figcaption{font-size:.76rem}

  /* Home hero had fixed 3rem headings and a tall fixed cover from WordPress. */
  .page-home .wp-block-cover{min-height:410px!important}
  .page-home .wp-block-cover h1{font-size:1.68rem!important;line-height:1.42!important;margin-top:.55rem;margin-bottom:.8rem}
  .page-home .wp-block-cover p{font-size:.84rem;line-height:1.68}
  .page-home .wp-block-cover .wp-block-spacer{height:30px!important}
  .page-home .home-research-cta{margin-top:.65rem;margin-bottom:.65rem}

  .page-research .wp-block-group.alignfull.has-background{padding-top:1.25rem;padding-bottom:1.25rem}
  .page-research .research-manipulation-video{margin-top:.9rem}
  .page-professor .site-main>p,.page-professor .site-main>ul{line-height:1.72}

  .member-group{margin:.85rem auto 1.25rem}
  .member-group-title{margin:.35rem 0 .65rem}
  .member-grid{gap:.72rem}
  .member-card figure{margin:.28rem auto .45rem}
  .member-card h3{font-size:.73rem;line-height:1.34;overflow-wrap:anywhere}
  .publication-year{padding:0 .7rem;margin-bottom:1.35rem}
  .publication-entry{font-size:.84rem;line-height:1.62;margin-bottom:.72rem}
  .career-destinations{font-size:.86rem;line-height:1.65}
  .gallery-managed{padding:0 .7rem}
  .gallery-grid{gap:1.2rem}
  .page-sitemap .sitemap-grid{width:calc(100% - 1.35rem);gap:.8rem;margin-top:1rem}
  .page-sitemap .sitemap-card{padding:.9rem 1rem}
  .page-sitemap .sitemap-card h2{font-size:1rem}
  table{width:calc(100% - 1.35rem);font-size:.8rem}
  th,td{padding:.42rem}
  .site-footer{font-size:.82rem;padding:1.3rem .75rem}
}

@media(max-width:380px){
  body{font-size:.86rem}
  .site-header{padding:.4rem .45rem;column-gap:.3rem}
  .brand-logo{width:28px;height:32px}
  .brand-title{font-size:.59rem}
  .brand-title-en .brand-en-school{font-size:.63em}
  .global-language-switch a{min-width:2rem;padding:.22rem .28rem;font-size:.61rem}
  .menu-toggle{width:2rem;height:1.95rem}
  .page-home .wp-block-cover{min-height:385px!important}
  .page-home .wp-block-cover h1{font-size:1.48rem!important}
  .member-grid{gap:.55rem}
  .member-card h3{font-size:.69rem}
  .page-home .wp-block-cover p{font-size:.8rem}
}