/* Mobile layout: keep every résumé section and the original engineering artwork. */
@media screen and (max-width:900px){
  :root{--mobile-gutter:clamp(16px,4vw,28px)}
  html{scroll-padding-top:calc(var(--site-header-height,80px) + 16px);-webkit-text-size-adjust:100%}
  .wrap{width:calc(100% - max(var(--mobile-gutter),env(safe-area-inset-left,0px)) - max(var(--mobile-gutter),env(safe-area-inset-right,0px)))}
  .header-inner{padding-left:max(var(--mobile-gutter),env(safe-area-inset-left,0px));padding-right:max(var(--mobile-gutter),env(safe-area-inset-right,0px));gap:12px}
  .chapter-menu nav{width:min(420px,calc(100vw - 2 * var(--mobile-gutter)));max-height:calc(100vh - var(--site-header-height,80px) - 28px);max-height:calc(100svh - var(--site-header-height,80px) - 28px);overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
  .chapter-menu nav a{min-height:44px;line-height:1.65;overflow-wrap:anywhere}
  .chapter-menu nav a>span{flex-shrink:0}
  .chapter-menu>summary,.language-switch{min-height:44px}

  /* Crop only the empty left margin of the source, retaining all the equipment.
     A separate bottom row keeps the navigation clear of the underground scene. */
  .hero.hero-integrated{--scene-height:min(520px,calc(100vw * 941 / 1152))}
  .hero-integrated .hero-scene{inset:auto 0 86px auto;width:100%;height:var(--scene-height);max-width:none;transform:none}
  .hero-integrated .hero-art{inset:0 0 auto auto;width:auto;height:100%;min-width:0;max-width:none;object-fit:contain;object-position:right center}
  .hero-integrated .hero-atmosphere{background:linear-gradient(180deg,#04111e 0,transparent 10%,transparent 92%,#04111e 100%)}
  .hero-integrated .hero-inner{display:block;min-height:0;padding-top:28px;padding-bottom:calc(var(--scene-height) + 100px)}
  .hero-integrated .hero-copy{width:100%;max-width:100%;padding:0}
  .hero-integrated h1{font-size:clamp(2.6rem,9.4vw,3.6rem);line-height:1.32}
  .hero-integrated .hero-copy>.overline{letter-spacing:clamp(.3px,.15vw,1.2px);overflow-wrap:anywhere}
  .hero-integrated .hero-subtitle{font-size:1rem;line-height:1.9;letter-spacing:0;max-width:100%}
  .hero-integrated .hero-bottom{bottom:16px;min-height:54px;gap:12px;align-items:center}
  .hero-integrated .hero-bottom>a{flex-shrink:0;font-size:.875rem}
  .hero-integrated .hero-bottom>span{max-width:180px;min-width:0;line-height:1.8;text-align:right;word-spacing:normal;overflow-wrap:anywhere}
  .hero-integrated .hero-bottom i{display:none}
  html[lang="en"] .hero-integrated h1{font-size:clamp(2.45rem,8.8vw,3.5rem)}
  html[lang="en"] .hero-integrated .hero-subtitle{max-width:100%}

  .section{padding-block:36px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:24px}
  .section-head>div,.section-head>p,.section-side-label{min-width:0;max-width:100%;overflow-wrap:anywhere}
  .section-head h2{font-size:clamp(1.8rem,5.6vw,2.4rem);line-height:1.5;overflow-wrap:anywhere}
  .section-head>.art-epigraph,.section-side-label.art-epigraph{max-width:100%;text-align:left;line-height:1.6}
  .section-intro,.profile-content>p,.work-list p,.mentoring-list p{font-size:1rem;line-height:1.9;overflow-wrap:anywhere}
  .overline,.degree,.gallery-heading>span{overflow-wrap:anywhere}
  .profile-grid,.mentoring-grid,.mentoring-honors{grid-template-columns:minmax(0,1fr);gap:24px}
  .profile-content,.mentoring-list,.honor-items,.research-summary-card,.official-grid>a{min-width:0}
  .portrait-card{width:min(270px,100%);max-width:100%;justify-self:center}
  .profile-tags>span{max-width:100%;overflow-wrap:anywhere;font-size:.875rem}
  .contact-facts{grid-template-columns:minmax(0,1fr)}
  .contact-facts>div{grid-template-columns:4rem minmax(0,1fr);gap:12px}
  .contact-facts dd{font-size:.9375rem;overflow-wrap:anywhere}
  .education-timeline{grid-template-columns:minmax(0,1fr);gap:0;padding:0}
  .education-timeline li{padding:0 0 24px 24px;border-left:1px solid #36546d}
  .education-timeline li:last-child{padding-bottom:0;border-left-color:#986b46}
  .education-time{margin-bottom:12px}
  .timeline-junction{position:absolute;left:0;top:10px;width:0;height:0;margin:0}
  .timeline-junction:before{left:-5px;top:0}
  .work-list article{grid-template-columns:minmax(0,1fr);gap:12px;padding-block:22px}
  .work-list article>div{min-width:0}
  .work-date{display:flex;flex-wrap:wrap;gap:6px 16px}
  .work-date>span{margin:0}
  .research-summary{grid-template-columns:minmax(0,1fr)}
  .research-summary-card>div{flex-wrap:wrap;gap:8px 16px}
  .research-summary-card h3{max-width:100%}
  .research-summary-card>div>span{display:flex;align-items:baseline;gap:8px;white-space:normal}
  .research-summary-card b{font-size:2rem}
  .research-summary-card p{margin-top:8px}
  .paper-summary,.award-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0}
  .paper-summary>span,.award-stat{padding:16px;min-width:0;overflow-wrap:anywhere}
  .paper-summary>span+span,.award-stat+.award-stat{border-left:0}
  .paper-summary>span:nth-child(even),.award-stat:nth-child(even){border-left:1px solid #314559}
  .paper-summary>span:nth-child(n+3),.award-stat:nth-child(n+3){border-top:1px solid #314559}
  .paper-summary b,.award-stat>strong,.total-stat>strong{font-size:2.8rem;line-height:1.25}
  .paper-summary>span,.award-stat>span,html[lang="en"] .paper-summary>span,html[lang="en"] .award-stat>span{font-size:.875rem;line-height:1.7}

  .carousel,.award-section .carousel,.photo-carousel,.life-carousel{--slide-width:min(360px,calc(100% - 18px));--slide-gap:14px;min-width:0;width:100%}
  .carousel-viewport{width:100%;max-width:100%;min-width:0}
  .slide{flex-basis:var(--slide-width)}
  .carousel-toolbar{flex-wrap:wrap;gap:10px 16px;align-items:center}
  .carousel-hint{font-size:.875rem;line-height:1.7}
  .carousel-controls{max-width:100%;gap:8px;margin-left:auto;flex-wrap:wrap}
  .carousel-controls button{min-height:44px}
  .carousel-controls .round-button{width:44px;min-width:44px}
  .play-toggle{font-size:.875rem;padding:7px 10px;margin-right:0}
  .gallery-card .slide-top{flex-wrap:wrap;align-items:center;line-height:1.6;padding:12px}
  .gallery-card .status-badge{white-space:normal;max-width:100%;overflow-wrap:anywhere}
  .gallery-card .media-image{width:calc(100% - 24px);height:clamp(210px,68vw,310px);margin-inline:12px}
  .gallery-card .media-image.paper{height:clamp(290px,95vw,410px)}
  .life-card .media-image{height:clamp(300px,98vw,430px)}
  .gallery-card .media-image img{width:100%;height:100%;object-fit:contain}
  .gallery-card .slide-content{padding:18px 16px}
  .gallery-card h3{font-size:1rem;line-height:1.8}
  .gallery-card .slide-content>p{font-size:.875rem;line-height:1.8}
  .record-list>summary{min-height:48px;gap:12px;line-height:1.7}
  .record-list>summary>span{flex-shrink:0}
  .record-list li{min-width:0;gap:10px}
  .record-list ol>li{grid-template-columns:2rem minmax(0,1fr)}
  .record-list ul>li{grid-template-columns:4rem minmax(0,1fr)}
  .record-list li>div{min-width:0}
  .record-list h3,.record-list strong{font-size:.9375rem;line-height:1.85}
  .record-list p{font-size:.875rem;line-height:1.8;overflow-wrap:anywhere}
  .mentoring-list article{grid-template-columns:1.5rem minmax(0,1fr);gap:12px}
  .mentoring-quote{max-width:520px;width:100%;padding:26px 22px}
  .mentoring-quote h3.art-quote{font-size:clamp(1.8rem,7vw,2.6rem);letter-spacing:.02em;line-height:1.65}
  .art-quote>span:nth-child(2){padding-left:.35em}
  .art-quote>em:nth-child(3){padding-left:.45em}
  .art-quote>em:nth-child(4){padding-left:.75em}
  .honor-items strong{overflow-wrap:anywhere}
  .teaching-achievements{flex-direction:column;align-items:flex-start;gap:14px;padding:20px 22px}
  .teaching-achievements>div{gap:12px 24px;max-width:100%}
  .official-grid{grid-template-columns:minmax(0,1fr)}
  .official-grid>a{gap:14px;padding:19px 16px}
  .official-index{font-size:1.5rem}
  .official-arrow{font-size:1.25rem}
  .official-grid h3{font-size:1rem;line-height:1.8}
  .official-grid p{font-size:.875rem}
  .footer{flex-wrap:wrap;gap:12px 16px;padding-bottom:max(22px,env(safe-area-inset-bottom,0px))}
  .footer>span{min-width:0;overflow-wrap:anywhere}
  .footer>span:nth-child(2){order:3;flex-basis:100%}
  html[lang="en"] .art-quote>span,html[lang="en"] .art-quote>em{padding-left:0;overflow-wrap:anywhere}
  html[lang="en"] .mentoring-quote h3.art-quote{font-size:1.9rem}
  html[lang="en"] .closing-art span,html[lang="en"] .closing-art em{transform:none;overflow-wrap:anywhere}

  .image-dialog{width:calc(100% - 20px);max-width:760px;max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px - env(safe-area-inset-bottom,0px));padding:12px;margin:auto;overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
  .viewer-top{position:sticky;top:-12px;z-index:2;background:#0b1420;padding:8px 0;margin-bottom:10px;gap:10px}
  .viewer-top button{min-width:44px;min-height:44px;font-size:.875rem}
  .viewer-stage{grid-template-columns:44px minmax(0,1fr) 44px;grid-template-rows:auto 44px;gap:12px;min-height:0}
  .viewer-stage>img{grid-column:1/-1;grid-row:1;width:100%;max-width:100%;height:auto;max-height:calc(100vh - 235px);max-height:calc(100dvh - 235px);object-fit:contain;touch-action:pan-x pan-y pinch-zoom}
  .image-dialog .viewer-prev,.image-dialog .viewer-next{grid-row:2;width:44px;height:44px;padding:0}
  .viewer-prev{grid-column:1}.viewer-next{grid-column:3}
  .image-dialog .viewer-caption{font-size:.875rem;line-height:1.8;overflow-wrap:anywhere}
  .viewer-original{font-size:.875rem;line-height:1.8;min-height:44px;display:flex;align-items:center;text-align:center;width:fit-content}
}
@media screen and (max-width:680px){
  .header-inner{display:grid;grid-template-columns:minmax(0,1fr) auto auto;min-height:76px;gap:7px;padding-block:8px}
  .brand{min-width:0;gap:7px;white-space:normal;letter-spacing:0;line-height:1.5}
  .monogram{font-size:1.5rem;flex-shrink:0}
  .brand>span:last-child,html[lang="en"] .brand>span:last-child{font-size:.8125rem;max-width:none;min-width:0;white-space:normal;line-height:1.5;overflow-wrap:anywhere}
  .language-switch,html[lang="en"] .language-switch{margin:0;font-size:.875rem;padding:7px 9px;gap:0}
  .chapter-menu{margin:0}
  .chapter-menu>summary,html[lang="en"] .chapter-menu>summary{font-size:.875rem;gap:5px;padding:7px 9px}
  .chapter-menu nav{top:calc(100% + 14px);padding:12px 16px}
  .discipline-strip>.wrap{gap:6px 16px}
  .discipline-strip .wrap>span{font-size:.875rem;padding-block:4px}
  .section-head>.art-epigraph,.section-side-label.art-epigraph{font-size:1.35rem}
  .closing h2.closing-art{font-size:clamp(2rem,8vw,2.8rem);letter-spacing:.05em}
  .closing-art span{transform:translateX(-.2em)}.closing-art em{transform:translateX(.2em)}
}
@media screen and (max-width:380px){
  .header-inner{gap:6px}
  .language-switch,html[lang="en"] .language-switch,.chapter-menu>summary,html[lang="en"] .chapter-menu>summary{padding-inline:7px}
  .hero-integrated .hero-bottom>span{max-width:152px;font-size:.75rem}
  .carousel-controls{width:100%;justify-content:flex-end}
  .record-list ul>li{grid-template-columns:minmax(0,1fr);gap:4px}
  .teaching-achievements>div{gap:10px 18px}
}
@media screen and (max-width:900px) and (max-height:500px){
  .site-header{position:relative}
  html{scroll-padding-top:16px}
  .image-dialog{max-height:calc(100dvh - 12px)}
  .viewer-stage>img{max-height:55dvh}
}