[hidden]{display:none!important}.code-form{display:flex;gap:7px}.code-form input{width:210px;padding:10px 12px;border:1px solid #55616a;border-radius:8px;background:#263845;color:#fff;font:inherit;font-size:12px}.code-form input::placeholder{color:#afbdc4}.code-form button{border:0;background:#f4c944}.guide-bar{display:flex;gap:20px;align-items:center;padding:12px 30px;background:#fff;border-bottom:1px solid #e3e7e5;font-size:11px;color:#7c8b94}.guide-bar a{color:#22478b;text-decoration:none}.guide-bar #guide-kind{margin-left:auto}.build-layout,.lighting-layout{height:calc(100dvh - 116px)}.portal{display:block;max-width:1140px;margin:0 auto;padding:60px 34px;height:auto;min-height:0}.portal h1{font-size:40px;letter-spacing:1px;line-height:1.4}.portal-intro p{font-size:14px;color:#71818a;line-height:1.9;margin:18px 0 35px}.guide-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px}.guide-card{background:#fff;border:1px solid #e1e5e0;border-radius:16px;overflow:hidden;text-decoration:none;color:inherit;transition:transform .15s,box-shadow .15s}.guide-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px #17273312}.guide-card>img{display:block;width:100%;height:250px;object-fit:contain;background:#10181d}.card-body{padding:24px}.card-tags{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#7b8e99;letter-spacing:1px}.card-tags span:first-child{padding:5px 9px;border-radius:5px;background:#eaf0fa;color:#22478b}.card-tags .lighting{background:#fcf0db!important;color:#a2692c!important}.card-body h2{font-size:24px;margin:17px 0 10px}.card-body p{color:#75858e;font-size:13px;line-height:1.8;min-height:47px}.card-body small{display:block;font-size:11px;color:#8b969e}.card-link{margin-top:24px;color:#22478b;font-size:13px;font-weight:650}.catalog-footnote{font-size:12px;color:#8a969c;line-height:1.8;margin-top:24px}.not-found{padding:17px 20px;background:#fff0d6;border-radius:8px;line-height:1.8;color:#8d5e21}.lighting-layout{grid-template-columns:minmax(0,1fr) 350px}.lighting-stage{display:flex;flex-direction:column;min-width:0;overflow:auto;background:#f6f5f1}.lighting-title{padding:25px 28px 16px;display:flex;gap:10px;justify-content:space-between;align-items:center}.lighting-title h1{font-size:27px;letter-spacing:.3px}.lighting-title h1 span{font-size:14px}.draft-badge{padding:6px 9px;background:#f1e8d4;border-radius:5px;font-size:10px;white-space:nowrap;color:#9c7139}.stage-tabs{display:flex;gap:7px;padding:0 28px 16px;align-items:center}.stage-tabs button{font-size:12px;padding:9px 14px}.stage-tabs button[aria-pressed=true]{background:#22478b;color:#fff;border-color:#22478b}#mode-hint{font-size:10px;color:#8d979c;margin-left:auto}#photo-stage{flex:1;padding:0 28px;display:flex;flex-direction:column;justify-content:center}#photo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}.installation-photo{padding:0;overflow:hidden;border-radius:10px;background:#e8e9e7;cursor:zoom-in;align-self:center}.installation-photo img{display:block;width:100%;height:auto;max-height:55dvh;object-fit:contain}.photo-hint{text-align:center;color:#89969e;font-size:10px;margin:16px 0}.stage-caption{display:flex;justify-content:space-between;gap:15px;font-size:10px;color:#8a989f;line-height:1.7;padding:16px 28px}.lighting-controls h2{font-size:21px;margin:10px 0 20px}.guide-metrics{display:flex;gap:25px;font-size:11px;color:#89969d;padding:0 0 23px;border-bottom:1px solid #e9ece9;margin-bottom:22px}.guide-metrics b{color:#263f50;font-size:23px;margin-right:4px;font-weight:600}.step-select-label{display:block;font-size:11px;color:#87949c;margin-bottom:8px}#light-step{width:100%;border:1px solid #dae0dd;border-radius:8px;padding:11px 10px;color:#22478b;background:#fff;font-size:12px}#light-title{font-size:20px;margin:23px 0 12px}#light-description{font-size:13px;color:#657781;line-height:1.9}.need-parts{padding:13px;background:#f4f6f3;border-radius:8px;margin:18px 0;display:flex;flex-direction:column;gap:7px}.need-parts span{font-size:10px;color:#8a979e}.need-parts strong{font-size:12px;font-weight:500;color:#49616e}.step-note{padding:12px;border-left:3px solid #d5ac5d;background:#fff8e9;color:#947040;font-size:11px;line-height:1.8;margin-bottom:20px}.light-transport{display:flex;gap:10px}.light-transport button{flex:1;font-size:12px}.route-hint{font-size:10px;color:#a0a9ae;line-height:1.7;margin:12px 0 22px}.key-steps{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.key-steps>span{font-size:11px;color:#80929d;margin-right:4px}.key-steps button{font-size:10px;padding:8px;border-radius:6px;color:#22478b}.key-steps button[aria-pressed=true]{background:#e9effa;border-color:#91a9ce}.preparation{border-top:1px solid #e5e9e6;margin-top:24px;padding-top:18px;font-size:12px;color:#56707d}.preparation summary{cursor:pointer}.preparation h3{font-size:12px;margin-top:17px}.preparation p{font-size:11px;line-height:1.8;color:#819097}.preparation-photos{display:flex;gap:6px}.reference-photo{padding:0;overflow:hidden;cursor:zoom-in;background:#eceeed;min-width:0;border-radius:6px}.reference-photo img{display:block;width:100%;height:68px;object-fit:cover}.preparation-photos .reference-photo{flex:1}.pdf-link{display:inline-block;color:#22478b;font-size:11px;margin-top:22px;text-decoration:none}.lighting-status{font-size:10px;line-height:1.8;color:#9a9390;margin-top:16px}.camera-toolbar{display:flex;justify-content:center;gap:6px;padding:5px 12px}.camera-toolbar button{font-size:11px;padding:8px 13px}#three-stage{flex:1;display:flex;flex-direction:column;min-height:420px;background:radial-gradient(ellipse,#fff,#eef0e9)}#lighting-viewport{position:relative;flex:1;min-height:300px;touch-action:none}.model-toolbar{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px;padding:12px}.model-toolbar button{font-size:11px;color:#22478b}.model-toolbar label{font-size:10px;color:#687c86;display:flex;gap:4px;align-items:center}.model-toolbar input{accent-color:#22478b}.illustration-note{padding:0 22px;margin:0 0 12px;text-align:center;font-size:10px;color:#9a7b4b;line-height:1.7}.reference-strip{display:flex;padding:0 28px 18px;gap:15px;align-items:center;font-size:10px;color:#8b999f}.reference-strip>div{display:flex;gap:8px}.reference-strip img{width:90px;height:65px}dialog{border:0;border-radius:12px;padding:16px;max-width:92vw;max-height:94dvh;background:#fff;box-shadow:0 20px 80px #0005}dialog::backdrop{background:#132431cc}.dialog-head{display:flex;gap:15px;justify-content:space-between;align-items:center;font-size:12px;color:#6c7d86;margin-bottom:12px}#large-photo{display:block;max-width:86vw;max-height:80dvh;object-fit:contain;margin:auto}
@media(max-width:850px){.code-form input{width:155px}.code-form button{padding:9px 10px;font-size:11px}.guide-bar{padding:11px 18px;gap:12px}.guide-bar #guide-kind{display:none}.portal{padding:35px 20px}.portal h1{font-size:29px}.guide-cards{gap:18px}.guide-card>img{height:200px}.card-body{padding:18px}.card-body h2{font-size:20px}.build-layout,.lighting-layout{height:auto;min-height:0;grid-template-columns:1fr}.lighting-title{padding:22px 20px 16px}.lighting-title h1{font-size:24px}.stage-tabs{padding:0 20px 15px;flex-wrap:wrap}#mode-hint{font-size:10px}#photo-stage{padding:0 20px}#photo-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.installation-photo img{max-height:40dvh}#three-stage{height:450px;min-height:450px;flex:none}.lighting-controls{padding:24px}.lighting-controls h2,.guide-metrics{display:none}.stage-caption{padding:15px 20px}.reference-strip{padding:0 20px 16px}.reference-strip img{width:75px;height:55px}}
@media(max-width:560px){header{gap:10px}.brand{font-size:14px;gap:7px;letter-spacing:1px}.brand-mark{font-size:27px}.code-form input{width:126px;font-size:10px;padding:9px}.guide-cards{grid-template-columns:1fr}.guide-bar{font-size:10px}.guide-bar #guide-identity{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lighting-title h1 span{font-size:12px;margin-left:6px}.draft-badge{font-size:9px}.lighting-title{gap:6px}#photo-grid{grid-template-columns:1fr}.installation-photo img{max-height:none}.model-toolbar{gap:8px}.reference-strip>span{white-space:nowrap}}
/* Shared language selector, stable navigation and available-3D affordance. */
header{gap:12px}.code-form{margin-left:auto;min-width:0}.language-control select{max-width:115px;border:1px solid #667580;border-radius:8px;padding:9px 8px;background:#263845;color:#fff;font-size:12px;cursor:pointer}.step-note{margin:0 28px 16px;border:1px solid #e7c57e;border-left:4px solid #c38a1e;border-radius:8px;padding:13px 16px;background:#fff6df;color:#755013;font-size:12px;flex-shrink:0}.step-note strong{display:block;font-size:13px}.step-note p{margin:5px 0 0;line-height:1.8}.light-transport{margin-top:14px;align-items:stretch}.light-transport button{min-height:42px}.stage-tabs{flex-wrap:wrap}.stage-tabs button.three-available{background:#fff0b5;border:2px solid #bd860c;color:#674600;box-shadow:0 0 0 3px #f4c94426}.stage-tabs button.three-available:hover{background:#ffe58b}.stage-tabs button.three-available[aria-pressed=true]{background:#22478b;border-color:#22478b;color:#fff;box-shadow:0 0 0 3px #22478b20}#mode-hint{flex-basis:100%;margin-left:0}.lighting-title{flex-wrap:wrap}.lighting-title h1{overflow-wrap:anywhere}.options{flex-wrap:wrap}.model-toolbar label{max-width:100%}.stage-caption{flex-wrap:wrap}.key-steps>span{flex-basis:100%}.guide-metrics{gap:15px}.guide-metrics span{line-height:1.6}
@media(max-width:1100px){.brand-sub{display:none}}
@media(max-width:850px){.step-note{margin:0 20px 16px}.language-control select{max-width:100px}.code-form input{width:145px}}
@media(max-width:560px){header{height:auto;min-height:96px;flex-wrap:wrap;padding:12px 16px}.brand{order:0}.language-control{order:1;margin-left:auto}.code-form{order:2;flex-basis:100%;margin:0}.code-form input{flex:1;width:0}.guide-bar{flex-wrap:wrap}.stage-tabs button{max-width:100%}.lighting-title h1{font-size:22px}.dialog-head{align-items:flex-start}.dialog-head button{flex-shrink:0}}
/* Compact PDF-style directory and media-first lighting workspace. */
.lighting-layout{grid-template-columns:120px minmax(0,1fr) 290px}.step-directory{min-height:0;overflow:auto;border-right:1px solid #dce2df;background:#eef0ec;padding:14px 9px}.step-directory h2{font-size:11px;color:#647984;margin:0 0 12px;text-align:center}#step-thumbnails{display:flex;flex-direction:column;gap:10px}.step-thumbnail{display:block;width:100%;padding:5px;border-radius:7px;border:2px solid transparent;background:#fff;text-align:left}.step-thumbnail img{display:block;width:100%;aspect-ratio:4/3;object-fit:contain;background:#e8eae6;border-radius:3px}.step-thumbnail span{display:block;font-size:10px;line-height:1.4;font-weight:400;margin:5px 2px 1px;overflow-wrap:anywhere}.step-thumbnail[aria-current=step]{border-color:#22478b;background:#eaf0ff;box-shadow:0 0 0 1px #22478b}.stage-toolbar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid #e1e5df;flex-shrink:0;background:#fffdf6}.stage-toolbar .stage-tabs{padding:0;gap:5px;flex-shrink:0;flex-wrap:nowrap}.stage-toolbar .stage-tabs button{padding:8px 10px;font-size:11px;white-space:nowrap}.stage-toolbar .step-note{flex:1;margin:0;padding:5px 0 5px 10px;border:0;border-left:2px solid #d5ac5d;border-radius:0;background:none;font-size:11px;min-width:0}.stage-toolbar .step-note strong{font-size:10px}.stage-toolbar .step-note p{margin:2px 0 0;line-height:1.5}#photo-stage{padding:14px 16px 0;justify-content:flex-start}#photo-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}.lighting-controls{padding:18px}.lighting-controls .pdf-link{margin-top:8px}.lighting-controls #light-title{font-size:18px}.lighting-stage #three-stage{min-height:340px}.lighting-stage #lighting-viewport{min-height:230px}.stage-caption{padding:10px 16px;font-size:9px}.guide-bar{min-height:40px;padding:8px 20px;gap:14px}.guide-bar #guide-identity{color:#263f50;font-size:12px;line-height:1.5}.guide-bar #guide-kind{display:block;flex-shrink:0;padding:5px 9px;border-radius:5px;background:#eaf0fa;color:#22478b;white-space:nowrap}.guide-bar>a{flex-shrink:0}.card-version{display:inline-block;font-size:12px;padding:5px 9px;border-radius:5px;background:#eaf0fa;color:#22478b}.card-body h2{font-size:21px;line-height:1.4;overflow-wrap:anywhere}.viewer-title h1{font-size:23px}
@media(max-width:1100px){.lighting-layout{grid-template-columns:100px minmax(0,1fr) 270px}.stage-toolbar{gap:9px;padding:10px}.stage-toolbar .stage-tabs{flex-direction:row;align-items:center}.stage-toolbar .step-note{font-size:10px}#photo-grid{grid-template-columns:1fr}}
@media(max-width:850px){.lighting-layout{grid-template-columns:85px minmax(0,1fr);height:auto}.step-directory{grid-column:1;grid-row:1;max-height:70dvh;padding:10px 6px}.lighting-stage{grid-column:2;grid-row:1;max-height:70dvh;min-height:440px}.lighting-controls{grid-column:1/-1}.guide-bar{flex-wrap:wrap}.guide-bar #guide-identity{white-space:normal;overflow:visible;flex:1}.guide-bar #guide-kind{margin-left:0}.guide-bar>a{font-size:10px}.stage-toolbar .step-note{font-size:11px}.stage-toolbar .stage-tabs{flex-direction:row}.stage-toolbar{flex-wrap:wrap}.stage-toolbar .step-note{min-width:160px}.lighting-stage #three-stage{height:440px;min-height:440px}.lighting-stage .installation-photo img{max-height:none}}
@media(max-width:560px){.guide-bar{gap:7px;padding:9px 12px}.guide-bar>a{flex-basis:100%}.guide-bar #guide-identity{font-size:11px}.guide-bar #guide-kind{font-size:9px}.stage-toolbar .stage-tabs button{font-size:10px;padding:6px 8px}.stage-toolbar .step-note{font-size:10px}.stage-toolbar{gap:8px}#photo-stage{padding:10px}.camera-toolbar{flex-wrap:wrap}.camera-toolbar button{padding:6px 8px}.lighting-stage{max-height:72dvh}.step-directory{max-height:72dvh}}
.step-directory{min-width:0;overflow-x:hidden}.step-directory h2{overflow-wrap:anywhere;line-height:1.4}.step-thumbnail span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.guide-bar #guide-identity{min-width:0}.stage-toolbar{min-width:0}
@media(min-width:851px){body:has(.build-layout),body:has(.lighting-layout){display:flex;flex-direction:column;height:100dvh;overflow:hidden}body:has(.build-layout)>header,body:has(.lighting-layout)>header,.guide-bar{flex-shrink:0}.build-layout,.lighting-layout{flex:1;min-height:0;height:auto}}
#light-description{white-space:pre-line}#full-photo{display:inline-block;margin-top:12px;font-size:12px;color:#22478b}