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*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer;color:inherit}a,button{-webkit-tap-highlight-color:transparent}img{display:block;width:100%;height:auto}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}[hidden]{display:none!important}html[data-lang=zh] .en,html[data-lang=en] .zh{display:none!important}.skip{position:fixed;top:-80px;left:20px;background:var(--ink);color:white;padding:12px;z-index:100}.skip:focus{top:12px}.shell{width:min(1440px,100%);padding:0 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.project-grid.filtered .project-card{margin-top:0!important}
@media(max-width:700px){.boards-grid{grid-template-columns:1fr;gap:25px}}
@media(min-width:1600px){.hero{min-height:740px}.hero-visual{min-height:620px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
@media print{.site-header,.site-footer,.qr-actions,.qr-help,.qr-page>h1,.qr-page>.eyebrow,.qr-page>p,.toast{display:none!important}body{background:white}.qr-page{padding:0}.qr-card{width:95mm;border:1px solid #bbb;break-inside:avoid;margin:25mm auto}.qr-card img{width:65mm}}

.lang{display:inline-flex;align-items:center;gap:8px}.social-list a{display:inline-flex;align-items:center;gap:10px}.qr-block a .arrow{margin-left:6px}

/* A wide exterior cover without empty bands. */
.project-grid .project-card.exterior-cover .project-image{aspect-ratio:2}
.project-grid .project-card.exterior-cover .project-image img{object-fit:cover;object-position:50% 50%}
