:root{--paper:#f8f7f4;--ink:#20211e;--muted:#73746b;--red:#871b0a;--line:#d8d7ce;--gutter:32px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}button:focus-visible,a:focus-visible{outline:2px solid var(--red);outline-offset:5px}button:disabled{cursor:default;opacity:.35}img{display:block;max-width:100%}button{border:0;background:none}h1,h2,h3,p{margin:0}button,input{font:inherit}[hidden]{display:none!important}
.site-header{position:absolute;z-index:10;top:28px;left:var(--gutter);right:var(--gutter);display:flex;align-items:flex-start;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:18px;min-height:56px}.brand img{width:132px;height:auto}.brand-copy{padding-left:18px;border-left:1px solid #b8b8ad;font-size:15px;font-weight:300;line-height:1.55;white-space:nowrap}.nav{display:flex;align-items:center;padding-top:4px}.nav a,.nav button{display:flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;font-size:18px;font-weight:400}.nav .language{border-left:1px solid #b8b8ad;margin-left:8px}.nav a:hover,.nav a[aria-current=page],.nav button:hover{text-decoration:underline;text-underline-offset:6px}.on-hero{color:#fff;text-shadow:0 1px 5px #0008}.on-hero .brand-copy,.on-hero .language{border-color:#ffffff73}.on-hero a:focus-visible,.on-hero button:focus-visible{outline-color:white}
.hero{height:100svh;min-height:560px;position:relative;isolation:isolate;background:#20251e;color:#fff;overflow:hidden}.hero-photo,.hero-slide{position:absolute;inset:0;width:100%;height:100%}.hero-slide{object-fit:cover;opacity:0;visibility:hidden;transition:opacity .8s,visibility .8s}.hero-slide.active{opacity:1;visibility:visible}.hero:after{content:"";position:absolute;inset:60% 0 0;background:linear-gradient(transparent,#0007);pointer-events:none}.hero-bottom{position:absolute;left:var(--gutter);right:var(--gutter);bottom:32px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;z-index:2}.hero-title{display:inline-block;font-size:clamp(25px,3vw,42px);font-weight:400;line-height:1.3;margin-bottom:12px}.hero-design{font-size:13px;font-weight:300;line-height:1.6;letter-spacing:.015em;margin:-3px 0 10px;max-width:calc(100vw - 64px)}.home-scroll{position:absolute;left:50%;bottom:0;transform:translateX(-50%);display:flex;gap:18px;align-items:center;min-height:44px;font-size:11px;letter-spacing:.06em;white-space:nowrap}.home-scroll span{font-size:20px;font-weight:300}.home-scroll:hover span{transform:translateY(4px)}.hero-title:hover{text-decoration:underline;text-underline-offset:7px;text-decoration-thickness:1px}.dots{position:relative;width:112px;height:28px;overflow:hidden;margin-left:-10px;mask-image:linear-gradient(90deg,transparent,#000 7px,#000 calc(100% - 7px),transparent)}.dot-track{display:flex;width:max-content;height:28px;will-change:transform}.dot{flex:0 0 28px;width:28px;height:28px;display:grid;place-items:center;padding:0;color:#fff}.dot:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor;opacity:.5;transition:opacity .35s}.dot.is-active:before{opacity:1}.dot:focus-visible{outline-offset:-3px}.hero-arrow{display:none;position:absolute;z-index:3;top:18%;bottom:18%;width:9vw;min-width:64px;max-width:160px;padding:0;border:0;background:none;color:white;opacity:0;font-size:38px;font-weight:300;text-shadow:0 1px 8px #0008;transition:opacity .2s}.hero-arrow-prev{left:0}.hero-arrow-next{right:0}.hero-arrow:hover,.hero-arrow:focus-visible{opacity:.5}@media(min-width:761px) and (hover:hover) and (pointer:fine){.hero-arrow{display:block}}
.page{padding:152px var(--gutter) 0;min-height:100svh}.page-heading{display:flex;justify-content:space-between;gap:32px;align-items:baseline;margin-bottom:44px}.page-heading h1{font-size:clamp(34px,5vw,60px);font-weight:300;letter-spacing:-.025em}.small-label{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.works-toolbar{display:flex;justify-content:space-between;gap:24px;border-top:1px solid var(--line);padding:15px 0 28px}.filters,.view-switch{display:flex;gap:20px;align-items:center}.filters button,.view-switch button{padding:8px 0;min-height:36px;font-size:13px;color:var(--muted);white-space:nowrap}.filters button[aria-pressed=true],.view-switch button[aria-pressed=true]{color:var(--ink);text-decoration:underline;text-underline-offset:6px}.project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:44px 28px}.project-card{min-width:0}.card-photo{aspect-ratio:4/3;overflow:hidden;background:#e6e6df}.card-photo img{display:block;width:100%;height:100%;object-fit:cover;object-position:var(--cover-position,50% 50%);transition:transform .6s}.project-card:hover .card-photo img{transform:scale(1.018)}.card-caption{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-top:16px}.card-text{min-width:0;flex:1}.card-design{font-size:11px;line-height:1.65;color:var(--muted);margin-top:5px;overflow-wrap:anywhere}.card-caption h2{font-size:18px;font-weight:400;line-height:1.5}.card-caption .category{font-size:11px;color:var(--muted);white-space:nowrap}.project-list{display:flex;flex-direction:column;gap:0}.project-list .project-card{display:flex;align-items:center;gap:26px;padding:20px 0;border-bottom:1px solid var(--line)}.project-list .card-photo{width:130px;aspect-ratio:3/2;flex-shrink:0}.project-list .card-caption{flex:1;margin:0}.site-footer{display:flex;justify-content:space-between;gap:24px;border-top:1px solid var(--line);padding:26px 0 30px;margin-top:72px;font-size:12px;line-height:1.7;color:var(--muted)}.site-footer a:hover{text-decoration:underline}
.project-page{padding-top:118px;height:100svh;min-height:580px;display:flex;flex-direction:column;overflow:hidden}.project-gallery{display:flex;gap:18px;overflow-x:auto;overflow-y:hidden;flex:1;min-height:0;padding:0 var(--gutter) 12px;overscroll-behavior-x:contain;scrollbar-width:none}.gallery-photo{height:100%;max-width:calc(100vw - var(--gutter) - var(--gutter));min-width:0;flex:0 0 auto;display:block;padding:0;border:0;background:none;cursor:zoom-in}.gallery-photo img{height:100%;width:100%;max-width:100%;object-fit:contain}.project-bottom{padding:24px var(--gutter) 26px;display:flex;justify-content:space-between;align-items:flex-end;gap:28px}.project-title h1{font-size:20px;font-weight:400;margin-bottom:8px;line-height:1.4}.project-links{display:flex;gap:22px;align-items:center;flex-shrink:0}.project-links a,.project-links button{min-height:36px;display:inline-flex;align-items:center;font-size:12px;padding:0}.project-links a:hover,.project-links button:hover{text-decoration:underline;text-underline-offset:5px}.scroll-hint{font-size:11px;letter-spacing:.05em;color:var(--muted);margin-left:18px}
.about-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:8vw;align-items:start;padding-bottom:20px}.about-text h1{font-size:clamp(32px,4.3vw,56px);font-weight:300;line-height:1.4;letter-spacing:-.025em;margin-bottom:36px}.about-text p{font-size:18px;font-weight:300;line-height:2;max-width:520px}.about-text .contact-link{display:inline-flex;align-items:center;min-height:44px;font-size:14px;margin-top:36px;border-bottom:1px solid var(--ink)}.about-image img{width:100%;height:calc(100svh - 215px);min-height:480px;max-height:850px;object-fit:cover;object-position:50% 50%}.about-text .small-label{margin-bottom:24px;display:block}.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:8vw;padding:20px 0 40px}.contact-intro h1{font-size:clamp(36px,5vw,68px);font-weight:300;line-height:1.4;letter-spacing:-.03em;max-width:550px}.contact-intro p{font-size:15px;line-height:1.8;color:var(--muted);margin-top:28px}.contact-details{padding-top:10px}.contact-row{border-top:1px solid var(--line);padding:24px 0;display:grid;grid-template-columns:110px 1fr;gap:18px;align-items:baseline}.contact-row dt{font-size:12px;color:var(--muted)}.contact-row dd{margin:0;font-size:clamp(17px,2vw,24px);font-weight:300;overflow-wrap:anywhere}.contact-row a,.contact-row button{display:inline-block;padding:0;font-weight:300;text-align:left}.contact-row a:hover,.contact-row button:hover{text-decoration:underline;text-underline-offset:6px}.contact-row small{display:block;font-size:12px;color:var(--muted);margin-top:10px}.contact-row button.small-action{font-size:12px;color:var(--muted);margin-top:12px}
dialog{border:0;padding:0;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#12151099;backdrop-filter:blur(5px)}.info-dialog{width:min(640px,calc(100% - 32px));max-height:calc(100svh - 48px);padding:42px;overflow:auto}.dialog-close{position:absolute;right:18px;top:14px;width:40px;height:40px;font-size:26px;font-weight:300}.info-dialog h2{font-size:25px;font-weight:400;padding-right:30px;margin:12px 0 34px;line-height:1.5}.project-facts{margin:0}.project-facts div{display:grid;grid-template-columns:100px 1fr;gap:18px;border-top:1px solid var(--line);padding:18px 0;font-size:14px;line-height:1.7}.project-facts dt{color:var(--muted)}.project-facts dd{margin:0}.qr-wrap{text-align:center}.qr-wrap img{width:200px;height:auto;image-rendering:pixelated;margin:16px auto}.qr-wrap p{font-size:14px;line-height:1.8}/* Full photographs remain uncropped; the blurred layer only affects the surrounding page. */
html.has-lightbox{overflow:hidden}
.lightbox{inset:0;margin:0;width:100%;height:100svh;height:100dvh;max-width:none;max-height:none;background:transparent;color:#fff;overflow:hidden}
.lightbox::backdrop{background:rgb(45 47 44 / 50%);-webkit-backdrop-filter:blur(18px) grayscale(50%);backdrop-filter:blur(18px) grayscale(50%);animation:lightbox-backdrop-in .5s ease-out}
@keyframes lightbox-backdrop-in{from{opacity:0}to{opacity:1}}
.lightbox.is-closing::backdrop{animation:lightbox-backdrop-out .5s cubic-bezier(.65,0,.25,1) both}
@keyframes lightbox-backdrop-out{from{opacity:1}to{opacity:0}}
.lightbox-inner{height:100%;display:grid;grid-template-rows:auto minmax(0,1fr) auto;padding:22px 32px;gap:18px}
.lightbox-top{display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:44px;font-size:14px;text-shadow:0 1px 8px #0008}
.lightbox-close{font-size:28px;color:white;width:44px;height:44px;flex-shrink:0}
.lightbox-photo{display:flex;min-height:0;min-width:0;justify-content:center;align-items:center;margin:0 32px}
.lightbox-photo img{flex:none;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain}
.lightbox.is-opening #lightbox-image-frame,.lightbox.is-closing #lightbox-image-frame{visibility:hidden}
.lightbox.is-exiting .lightbox-top,.lightbox.is-exiting .lightbox-bottom,.lightbox.is-exiting .lightbox-buttons{opacity:0;pointer-events:none;transition:opacity .15s}
.lightbox-bottom{display:flex;align-items:center;font-size:12px;min-height:44px;text-shadow:0 1px 8px #0008}
.lightbox-buttons button{position:fixed;top:50%;transform:translateY(-50%);z-index:2;display:grid;place-items:center;width:48px;height:64px;color:white;padding:12px;border:0;background:transparent;opacity:.7;filter:drop-shadow(0 1px 5px #0009);transition:opacity .2s}
#lightbox-prev{left:clamp(4px,1.5vw,28px)}#lightbox-next{right:clamp(4px,1.5vw,28px)}
.lightbox-buttons svg{display:block;width:18px;height:30px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}#lightbox-prev svg{transform:rotate(180deg)}
.lightbox-buttons button:hover,.lightbox-buttons button:focus-visible{opacity:1}.lightbox-buttons button:disabled{opacity:.2}
.lightbox :focus-visible{outline-color:white}
.lightbox-opening-image{position:fixed;z-index:1;pointer-events:none}
.lightbox-opening-image picture,.lightbox-opening-image img{display:block;width:100%;height:100%;max-width:none;object-fit:contain;transform:none;transition:none}
@media(hover:hover) and (pointer:fine){.gallery-photo picture{transform:scale(.985);transition:transform .35s cubic-bezier(.2,.65,.25,1)}.gallery-photo:hover picture,.gallery-photo:focus-visible picture{transform:scale(1)}}
@media(prefers-reduced-motion:reduce){.gallery-photo picture{transform:none;transition:none}.lightbox::backdrop{animation:none}.lightbox-buttons button{transition:none}}
.toast{position:fixed;z-index:40;bottom:26px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:14px 24px;font-size:13px;box-shadow:0 4px 25px #0002;white-space:nowrap}
@media(min-width:1800px){.brand img{width:160px}.project-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){:root{--gutter:16px}.site-header{top:16px;gap:12px;align-items:center}.brand{min-height:48px}.brand img{width:94px}.brand-copy{display:none}.nav{padding:0}.nav a,.nav button{padding:0 9px;min-height:44px;font-size:12px}.nav .language{margin-left:3px;padding-left:12px}.hero{min-height:540px}.hero-bottom{bottom:20px;display:block}.hero-title{font-size:25px;max-width:95%}.page{padding-top:122px}.page-heading{margin-bottom:28px;gap:16px}.page-heading h1{font-size:38px}.small-label{font-size:10px}.works-toolbar{gap:20px;padding-bottom:22px;align-items:flex-start}.filters{gap:16px;overflow-x:auto;scrollbar-width:none}.filters button,.view-switch button{font-size:12px}.view-switch{gap:12px;flex-shrink:0}.project-grid{grid-template-columns:minmax(0,1fr);gap:32px}.project-grid .card-photo{aspect-ratio:var(--mobile-cover-ratio,auto)}.card-photo img{object-position:var(--mobile-cover-position,var(--cover-position,50% 50%))}.card-caption{display:block;margin-top:9px}.card-caption h2{font-size:13px;font-weight:400;line-height:1.6;overflow-wrap:anywhere}.card-design{font-size:10px;line-height:1.65;margin-top:3px}.card-caption .category{display:block;font-size:9px;line-height:1.6;margin-top:4px}.project-list .project-card{gap:16px}.project-list .card-photo{width:88px;aspect-ratio:var(--mobile-cover-ratio,auto)}.project-list .card-caption{display:block}.project-list .category{display:block;margin-top:6px}.site-footer{margin-top:48px;padding-top:22px;display:block}.site-footer a{display:inline-block;margin-top:12px}.project-page{height:auto;min-height:100svh;overflow:visible;padding:124px var(--gutter) 0;display:block}.project-gallery{display:block;padding:0;overflow:visible}.gallery-photo{height:auto;width:100%;margin-bottom:16px}.gallery-photo img{width:100%;height:auto;max-width:100%}.project-bottom{padding:20px 0 28px;display:block}.project-title h1{font-size:23px}.project-links{justify-content:space-between;gap:12px;margin-top:24px;border-top:1px solid var(--line);padding-top:14px}.scroll-hint{display:none}.about-layout{grid-template-columns:1fr;gap:40px}.about-text h1{font-size:34px;margin-bottom:26px}.about-text p{font-size:17px;line-height:1.9}.about-text .contact-link{margin-top:24px}.about-image img{height:auto;min-height:0;max-height:none;aspect-ratio:4/5}.contact-layout{grid-template-columns:1fr;gap:40px;padding:0}.contact-intro h1{font-size:38px}.contact-intro p{margin-top:18px}.contact-row{grid-template-columns:88px 1fr;padding:22px 0;gap:14px}.contact-row dd{font-size:19px}.info-dialog{padding:30px 24px}.info-dialog h2{font-size:22px;margin-bottom:26px}.project-facts div{grid-template-columns:75px 1fr;font-size:13px}.lightbox-inner{padding:14px 16px;gap:12px}.lightbox-top{font-size:12px}.lightbox-bottom{font-size:11px}.toast{max-width:calc(100% - 32px);white-space:normal;line-height:1.6;text-align:center}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-slide,.dot:before,.card-photo img,.hero-arrow{transition:none}}

/* The outgoing homepage shrinks first, then lifts to reveal the works. */
.is-revealing-works{overflow:hidden}.home-transition{position:fixed;inset:0;z-index:6;pointer-events:none;transform-origin:50% 42%;will-change:transform}.home-transition .hero{height:100svh;min-height:0}.header-reveal{animation:header-reveal 1.2s both}@keyframes header-reveal{0%,35%{color:#fff;text-shadow:0 1px 5px #0008}80%,100%{color:var(--ink);text-shadow:none}}
@media(max-width:760px){.hero-design{font-size:11px;max-width:calc(100vw - 32px)}.home-scroll{left:0;bottom:0;transform:none;min-height:44px;font-size:10px;gap:12px}.hero-bottom{padding-bottom:54px;bottom:max(20px,env(safe-area-inset-bottom))}}
@media(prefers-reduced-motion:reduce){.header-reveal{animation:none}.dot-track{will-change:auto}}

.works-transition{position:fixed;inset:0;z-index:5;overflow:hidden;background:var(--paper)}.header-reveal-back{animation-direction:reverse}

/* The homepage image lands in the matching project cover without image distortion. */
.home-transition.cover-landing{inset:auto;top:0;left:0;width:100vw;height:100svh;overflow:hidden;transform-origin:0 0;will-change:width,height,left,top}
.cover-landing .hero{width:100%;height:100%;min-height:0}
.cover-landing .hero-slide.active{opacity:1;visibility:visible;transition:none}
.cover-landing .landing-cover{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;aspect-ratio:auto;pointer-events:none}
.cover-landing .landing-cover picture{display:block;width:100%;height:100%}
.cover-landing .landing-cover img{height:100%;aspect-ratio:auto;object-fit:cover;transform:none;transition:none}

.project-route-transition{position:fixed;z-index:9;overflow:hidden;pointer-events:none;background:var(--paper);will-change:width,height,left,top}
.project-route-background{position:fixed;inset:0;z-index:5;overflow:hidden;background:var(--paper);pointer-events:none}
.route-photo{position:absolute;inset:0;width:100%;height:100%}
.route-photo picture,.route-photo img{display:block;width:100%;height:100%;max-width:none}
.route-photo img{transition:none;transform:none}
.route-photo-full img{object-fit:contain;object-position:center}
.route-photo-cover img{object-fit:cover;object-position:var(--cover-position,50% 50%)}
.project-links>a{font-size:16px;min-height:44px;padding:0 4px}
@media(max-width:760px){.route-photo-cover img{object-position:var(--mobile-cover-position,var(--cover-position,50% 50%))}}

.card-photo picture,.gallery-photo picture{display:block;width:100%;height:100%}@media(max-width:760px){.gallery-photo picture{height:auto}}
@media(max-width:360px){.site-header{gap:8px}.brand img{width:82px}.nav a,.nav button{font-size:11px;padding:0 7px}.nav .language{padding-left:10px}}

@media(min-width:761px) and (max-width:1000px){.nav a,.nav button{font-size:16px;padding:0 14px}}

/* Hide scroll indicators while retaining native wheel, touch and keyboard scrolling. */
*{scrollbar-width:none}*::-webkit-scrollbar{display:none;width:0;height:0}
@media(max-width:760px){.site-footer{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.site-footer>span,.site-footer>a{display:block}.site-footer>a{margin-top:0;overflow-wrap:anywhere}}

/* A continuous sequence of projects; individual photographs keep their full ratio. */
.site-header.on-project{position:fixed;top:0;left:0;right:0;padding:24px var(--gutter) 18px;background:var(--paper)}
.project-progress{position:fixed;z-index:30;left:0;right:0;top:0;height:2px;pointer-events:none;background:transparent}
.project-progress span{display:block;width:100%;height:100%;background:var(--ink);transform:scaleX(0);transform-origin:left center}
.project-gallery{gap:0;scroll-behavior:auto;overflow-anchor:none}
.project-run{display:flex;flex:0 0 auto;gap:0;height:100%;min-width:0}
.project-images{display:flex;gap:18px;height:100%;flex:0 0 auto}
.project-divider{display:grid;grid-template-columns:1fr 1px 1fr;gap:18px;flex:0 0 clamp(170px,17vw,260px);width:clamp(170px,17vw,260px);padding:0 30px;height:100%;color:var(--ink)}
.divider-line{width:1px;height:100%;background:var(--ink)}
.divider-info,.divider-continue{display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:20px;padding:0;min-width:44px;min-height:44px;font-size:16px;line-height:1.3}
.divider-info{align-items:flex-end}.divider-info>span:last-child{writing-mode:vertical-rl;transform:none}
.divider-plus{font-size:28px;font-weight:300;line-height:1}
.divider-continue{align-items:flex-start;writing-mode:vertical-rl;text-align:left}
.divider-next-name{font-size:11px;font-weight:300;color:var(--muted);max-height:55%;overflow-wrap:anywhere}
.divider-info:hover,.divider-continue:hover{color:var(--red)}
.project-design{font-size:11px;line-height:1.6;color:var(--muted);margin:-2px 0 5px;max-width:60vw}
.project-design:empty{display:none}
@media(max-width:760px){
 .site-header.on-project{padding:16px var(--gutter);align-items:center}
 .project-page{padding-top:104px;padding-bottom:calc(88px + env(safe-area-inset-bottom));touch-action:pan-y pinch-zoom}
 .project-run,.project-images{display:block;height:auto;width:100%}
 .project-divider{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;width:100%;height:130px;padding:24px 0 32px}
 .divider-line{width:100%;height:1px}
 .divider-info,.divider-continue{font-size:12px;min-width:44px;min-height:60px;gap:10px;justify-content:center}
 .divider-info{flex-direction:row;align-items:center;white-space:nowrap}
 .divider-info>span:last-child{writing-mode:horizontal-tb;transform:none}
 .divider-continue{writing-mode:horizontal-tb;align-items:flex-end;max-width:38vw}
 .divider-next-name{max-height:none;font-size:10px;line-height:1.5}
 .project-bottom{position:fixed;bottom:0;left:0;right:0;z-index:8;padding:12px var(--gutter) max(12px,env(safe-area-inset-bottom));background:var(--paper);border-top:1px solid var(--line)}
 .project-title h1{font-size:15px;margin:0 0 4px}
 .project-design{font-size:10px;max-width:100%;margin:0}
 .project-title>.small-label{display:none}
 .project-links{display:none}
 .project-links a,.project-links button{font-size:14px;min-height:44px}
}

/* Mobile cover height follows the selected photograph, including list thumbnails. */
.works-preload,.route-preload{position:fixed;left:-10000px;top:0;width:1px;height:1px;overflow:hidden;pointer-events:none;opacity:0}
@media(max-width:760px){
 .card-photo picture{height:auto}
 .card-photo img{height:auto;aspect-ratio:var(--mobile-cover-ratio,auto);object-fit:contain}
 .project-card:hover .card-photo img{transform:none}
}
/* Mobile lightbox fills the width; tall photos and enlarged details can be panned. */
@media(max-width:760px){
 .hero-slide{transition:none}
 .lightbox-inner{display:block;padding:0}
 .lightbox-photo{position:absolute;inset:0;margin:0;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none}
 .lightbox-photo img{max-width:none;max-height:none;transform-origin:center;will-change:transform;-webkit-user-drag:none}
 .lightbox-top{position:absolute;z-index:3;left:16px;right:16px;top:max(12px,env(safe-area-inset-top));pointer-events:none}
 .lightbox-close{pointer-events:auto}
 .lightbox-bottom{position:absolute;z-index:3;left:16px;bottom:max(8px,env(safe-area-inset-bottom));pointer-events:none}
 .lightbox-buttons{display:none}
}
.lightbox-slide-layer{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:1}
.lightbox-slide-layer>.watermarked-photo{position:absolute;display:block;max-width:none;max-height:none}
.lightbox-slide-layer img{display:block;width:100%;height:100%;max-width:none;max-height:none;object-fit:contain;transform:none}
.lightbox.is-switching #lightbox-image-frame{visibility:hidden}

.hero-ready-frame{position:absolute;inset:0;pointer-events:none}

/* Mobile history preview: fixed viewport layers, no root scroll lock or scaling. */
.swipe-back-preview{position:fixed;inset:0;z-index:60;overflow:hidden;background:var(--paper);pointer-events:none;contain:layout paint}
.swipe-back-previous,.swipe-back-current{position:absolute;inset:0;background:var(--paper);overflow:hidden;will-change:transform}
.swipe-back-current{box-shadow:-8px 0 28px #0002}
.swipe-back-document{position:absolute;left:0;right:0;top:0}
.swipe-back-current>.site-header{position:absolute}
.swipe-back-current>.project-bottom{position:absolute;bottom:0}
.swipe-back-current>.project-progress{position:absolute;top:0}
.swipe-back-shade{position:absolute;inset:0;background:#000;pointer-events:none}

/* Subtle logo marks are part of each displayed photo, including animation copies.
   Logos, QR codes, upload originals and the underlying image files stay intact. */
.card-photo,.about-image,.gallery-photo>picture,.watermarked-photo{position:relative}
:is(.hero-photo,.card-photo,.gallery-photo>picture,.about-image,.route-photo,.lightbox-opening-image,.watermarked-photo)::after{
 content:"";--mark-width:clamp(30px,3.4vw,46px);--mark-inset:7px;
 position:absolute;inset:0;z-index:1;pointer-events:none;user-select:none;-webkit-user-select:none;
 background:#fff;opacity:.4;
 -webkit-mask-image:url("assets/logo.png");mask-image:url("assets/logo.png");
 -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
 -webkit-mask-size:var(--mark-width) auto;mask-size:var(--mark-width) auto;
 -webkit-mask-position:left var(--mark-inset) bottom var(--mark-inset);mask-position:left var(--mark-inset) bottom var(--mark-inset);
}
.card-photo::after{--mark-width:clamp(26px,2.7vw,36px);--mark-inset:6px}
.project-list .card-photo::after{--mark-width:20px;--mark-inset:4px}
.hero-photo::after{--mark-width:46px;--mark-inset:8px}
.hero-bottom{bottom:32px}
/* Fit the marked picture itself to its original ratio, including very wide
   photographs whose gallery button has reached the viewport width limit. */
.gallery-photo{display:flex;align-items:center;justify-content:center}
.gallery-photo>picture{height:auto}
.gallery-photo>picture>img{height:auto}
.lightbox-image-frame{display:block;flex:none;max-width:none;max-height:none}
.lightbox-image-frame::after{transform:var(--watermark-transform,none);transform-origin:center}
@media(max-width:760px){
 :is(.card-photo,.gallery-photo>picture,.about-image,.route-photo,.lightbox-opening-image,.watermarked-photo)::after{--mark-width:30px;--mark-inset:5px}
 .project-list .card-photo::after{--mark-width:18px;--mark-inset:3px}
 .hero-bottom{bottom:max(20px,env(safe-area-inset-bottom))}
 .hero-photo::after{--mark-width:36px;-webkit-mask-position:left 6px bottom calc(6px + env(safe-area-inset-bottom));mask-position:left 6px bottom calc(6px + env(safe-area-inset-bottom))}
}

/* Verified website ICP registration; homepage link remains inside the viewport. */
.site-footer{flex-wrap:wrap}.site-filing{white-space:nowrap}
.hero-filing{position:absolute;z-index:3;right:var(--gutter);bottom:10px;max-width:calc(100% - 100px);font-size:11px;line-height:1.6;color:#ffffffbf;text-shadow:0 1px 4px #0008;white-space:nowrap}
.hero-filing:hover{text-decoration:underline;text-underline-offset:3px}
@media(max-width:760px){.hero-filing{right:10px;bottom:max(7px,env(safe-area-inset-bottom));font-size:10px}}