:root{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC",Arial,sans-serif;color:#171717;background:#f3f3f1;font-synthesis:none;font-size:16px;--muted:#666;--paper:#fff;--brand:#0d314b}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;border:0;border-radius:4px;padding:12px 16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#e8e8e5;color:#171717;min-height:44px}button:hover{background:#dddeda}button.primary{background:#171717;color:white}button.primary:hover{background:#363636}button:disabled{opacity:.42;cursor:not-allowed}button.ghost{background:transparent}button.active{background:#171717;color:white}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #171717;outline-offset:3px}input,select,textarea{width:100%;border:1px solid #a4a4a0;background:#fff;border-radius:4px;padding:10px 12px;min-height:44px;color:#171717}input[type=range]{padding:0;accent-color:#171717}label{display:block;font-size:14px;line-height:1.6;margin:12px 0}label>input,label>select,label>textarea{margin-top:6px}h1,h2,h3,p{margin-top:0}h1{font-size:30px;font-weight:400;line-height:1.35}h2{font-size:22px;font-weight:500}h3{font-size:17px;font-weight:500}p{line-height:1.65}.muted,small{color:var(--muted);line-height:1.6}.eyebrow{letter-spacing:.13em;font-size:12px;color:var(--muted);text-transform:uppercase}.top{height:76px;background:white;display:flex;align-items:center;justify-content:space-between;padding:0 32px;gap:28px}.brand{display:flex;align-items:center;gap:20px;text-decoration:none;white-space:nowrap}.brand img{width:116px;max-height:35px;object-fit:contain}.brand span{font-size:18px;color:#171717}.top nav{display:flex;align-items:center;gap:12px}.tag{font-size:12px;background:#eeeeeb;padding:6px 9px;color:#666;border-radius:3px}.hero{position:relative;min-height:600px;height:calc(100vh - 160px);max-height:900px;background:#dadad6;overflow:hidden}.hero img{width:100%;height:100%;object-fit:cover}.hero article{position:absolute;left:6%;top:19%;max-width:360px;background:rgba(255,255,255,.88);padding:36px}.hero h1{font-size:48px;line-height:1.25;font-weight:300}.hero .primary{margin-top:20px}.quick{background:white;display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;padding:32px 6%}.quick button{justify-content:space-between;background:#f3f3f1;padding:24px;text-align:left}.quick h3{margin-bottom:8px}.workspace{display:grid;grid-template-columns:192px minmax(0,1fr);height:calc(100vh - 76px)}.rail{background:white;padding:32px 16px;display:flex;flex-direction:column;gap:8px}.rail .eyebrow{padding-left:12px;margin-bottom:18px}.rail button{justify-content:flex-start;background:transparent;text-align:left;gap:15px}.rail button strong{font-size:24px;font-weight:300;color:#a3a3a3}.rail button.active{background:#eee;color:#171717}.rail button.active strong{color:#171717}.rail .bottom{margin-top:auto}.work{min-width:0;min-height:0;display:flex;flex-direction:column}.step-head{display:flex;align-items:center;justify-content:space-between;padding:22px 28px;background:white;gap:24px;min-height:112px}.step-head h1{font-size:22px;margin:0}.step-title{display:flex;align-items:center;gap:25px}.step-title>div:first-child{padding-right:25px;border-right:1px solid #ccc}.substeps{display:flex;gap:24px}.substep{display:flex;gap:10px;align-items:center}.substep>b{font-size:34px;font-weight:300}.substep small{display:block;font-size:12px;max-width:200px}.substep.inactive{color:#777}.substep.inactive>b{color:#aaa}.substep button{padding:0;min-height:0;background:none;color:inherit;text-align:left}.edit-body{display:grid;grid-template-columns:minmax(0,1fr) 368px;min-height:0;flex:1}.scene-column{min-width:0;min-height:0;padding:20px;display:flex;flex-direction:column;gap:12px}.canvas-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.segmented{display:flex;gap:4px}.segmented button{background:transparent;padding:8px 16px}.segmented button.active{background:white;color:#171717}.stage{position:relative;background:#e7e7e3;flex:1;min-height:260px;overflow:hidden;touch-action:none}.scene-group{position:absolute;transform-origin:center;user-select:none}.scene-image{position:absolute;width:100%;height:100%;object-fit:fill;pointer-events:none}.opening-box,.door-layer{position:absolute;transform:translate(-50%,-50%);user-select:none;touch-action:none}.opening-box{outline:2px dashed #171717;background:#ffffff33;display:flex;align-items:center;justify-content:center;color:#171717;cursor:move}.opening-box span{background:#ffffffdd;padding:8px 12px;font-size:13px}.door-layer{cursor:move}.door-layer>img{width:100%;height:100%;object-fit:fill;pointer-events:none}.door-layer.selected{outline:1px solid #fff;box-shadow:0 0 0 2px #171717}.hw-layer{position:absolute;transform:translate(-50%,-50%);cursor:move;touch-action:none;min-width:8px;min-height:8px}.hw-layer.selected{outline:2px solid #171717;outline-offset:5px}.hw-layer img{width:100%;height:100%;object-fit:fill;pointer-events:none}.stage-hint{position:absolute;bottom:16px;left:16px;background:#ffffffde;padding:8px 12px;font-size:12px;color:#555;pointer-events:none}.stage-actions{position:absolute;top:12px;right:12px;display:flex;gap:6px}.stage-actions button{background:#ffffffed}.canvas-footer{display:flex;align-items:center;justify-content:space-between}.inspector{background:#ededea;padding:20px;overflow:auto;min-height:0}.card{background:white;padding:20px;margin-bottom:14px;border-radius:6px}.card summary{cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:16px;font-weight:500;min-height:28px}.card summary:after{content:'+';font-size:22px;font-weight:300}.card[open] summary:after{content:'−'}.card summary::-webkit-details-marker{display:none}.card .muted{font-size:13px}.inline{display:flex;gap:10px;align-items:center}.inline>*{flex:1}.full{width:100%}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.product{display:flex;flex-direction:column;align-items:stretch;background:#f4f4f1;padding:8px;border-radius:4px;text-align:left;gap:7px;min-width:0}.product img{width:100%;height:128px;object-fit:contain}.product span{font-size:13px;line-height:1.5;overflow-wrap:anywhere}.product.active{background:#e4e4e1;color:#171717;box-shadow:inset 0 -3px #171717}.product small{font-size:11px}.swatch{min-height:50px;padding:5px;font-size:12px;display:flex;flex-direction:column}.swatch i{width:100%;height:24px;display:block}.empty{padding:30px 18px;color:#666;background:white;text-align:center;line-height:1.7}.prompt{padding:14px 0;border-bottom:1px solid #ecece9;display:grid;grid-template-columns:24px 1fr;gap:12px}.prompt:last-child{border:0}.prompt>b{font-size:22px;font-weight:300}.prompt h3{font-size:14px;margin:0 0 5px}.prompt p{font-size:13px;margin:2px 0;color:#666}.actionbar{background:white;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:82px}.actionbar .price{font-size:22px;font-weight:400;font-variant-numeric:tabular-nums}.actionbar small{font-size:12px}.long-page{max-width:1400px;margin:auto;padding:40px 32px}.heading-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px}.solutions{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.solution{background:white;border-radius:6px;overflow:hidden}.solution img{width:100%;height:200px;object-fit:cover}.solution article{padding:24px}.solution .inline button{font-size:14px}.price-line{display:flex;justify-content:space-between;font-size:14px;gap:12px;padding:10px 0}.review{overflow:auto;padding:26px;flex:1}.review-images{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:24px}.review-images img{width:100%;height:240px;object-fit:contain;background:#e8e8e4}.review .card{max-width:1000px;margin:auto auto 18px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.form-grid .wide{grid-column:1/-1}dialog{width:min(580px,calc(100% - 32px));border:0;border-radius:10px;background:white;padding:30px;color:#171717;max-height:90vh;overflow:auto}dialog::backdrop{background:#0007}.dialog-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.dialog-head h2{margin:0}dialog .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.error{color:#671b1b;background:#faf0ef;padding:12px;border-radius:4px;font-size:14px}.auth{max-width:420px;margin:8vh auto;background:white;padding:34px;border-radius:8px}.auth h1{font-size:26px}.status{font-size:13px;color:#666}.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{text-align:left;padding:14px 16px;border-bottom:1px solid #eee;font-size:14px}.table th{color:#666;font-weight:400}.meta{display:grid;grid-template-columns:1fr 1fr;gap:6px 20px;font-size:14px}#notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:min(650px,90vw);padding:14px 20px;border-radius:6px;background:#171717;color:white;display:none;z-index:20;line-height:1.5}.history{display:flex;gap:8px;overflow:auto}.history button{padding:4px;flex:none}.history img{width:90px;height:58px;object-fit:contain}.filedrop{display:block;padding:24px 16px;background:#f6f6f3;text-align:center;cursor:pointer}.filedrop input{max-width:100%;font-size:13px}.help{font-size:13px;color:#666}.line-tool{display:grid;grid-template-columns:55px 1fr 55px;gap:8px;align-items:center;margin-top:12px;font-size:13px}.line-tool input[type=number]{padding:7px;font-size:13px;min-height:34px}.plain-button{border:0;background:none;text-decoration:underline;padding:6px}.browse-preview{display:flex;gap:12px}.browse-preview img{width:70px;height:70px;object-fit:contain}.secondary-note{font-size:12px;color:#666;margin-top:12px}.progress-note{font-size:13px;color:#666;max-width:400px}.selected-label{font-size:13px;padding:7px 10px;background:#fff;border-radius:4px}.dev-label{font-size:12px;white-space:nowrap;color:#666}.review-total{font-size:24px}
@media(min-width:1600px){.edit-body{grid-template-columns:minmax(0,1fr) 400px}.scene-column{padding:24px}.inspector{padding:24px}}
@media(max-width:1199px){.workspace{grid-template-columns:150px 1fr}.rail{padding:20px 10px}.rail button{font-size:14px;gap:8px}.edit-body{grid-template-columns:minmax(0,1fr) 320px}.step-head{padding:16px}.substeps{gap:12px}.substep small{max-width:120px}.step-title{gap:14px}.step-title>div:first-child{padding-right:14px}.brand span{font-size:15px}.top{padding:0 20px}.top nav{gap:3px}.inspector{padding:12px}}
@media(max-width:899px){.top{height:68px;padding:0 16px}.brand{gap:10px}.brand img{width:88px}.top nav .optional{display:none}.workspace{height:auto;min-height:calc(100vh - 68px);display:block}.rail{flex-direction:row;padding:8px;overflow:auto;position:sticky;top:0;z-index:5}.rail .eyebrow,.rail .bottom{display:none}.rail button{flex:none;padding:8px 12px;min-height:44px}.rail button strong{font-size:20px}.step-head{min-height:100px;align-items:flex-start}.step-title{display:block}.step-title>div:first-child{border:0;padding:0;margin-bottom:10px}.substep>b{font-size:25px}.step-head>.optional{display:none}.edit-body{display:flex;flex-direction:column}.scene-column{padding:12px}.stage{height:56vh;min-height:340px;flex:none}.inspector{padding:16px;overflow:visible}.actionbar{position:sticky;bottom:0;z-index:6;padding:12px 16px}.progress-note{max-width:45%;font-size:12px}.solutions{grid-template-columns:1fr 1fr}.hero{min-height:560px;height:75vh}.hero article{padding:24px;top:25%;left:6%;max-width:290px}.hero h1{font-size:36px}.quick{grid-template-columns:1fr;padding:24px}.long-page{padding:28px 16px}}
@media(max-width:599px){.brand span{font-size:13px}.top nav button{padding:8px;font-size:13px}.dev-label{display:none}.hero article{left:16px;right:16px;top:auto;bottom:24px;max-width:280px}.hero h1{font-size:32px}.solutions{grid-template-columns:1fr}.stage{min-height:300px;height:48vh}.step-head{display:block}.substeps{margin-top:12px}.substep small{max-width:125px}.canvas-top{font-size:12px}.form-grid,.review-images{grid-template-columns:1fr}.form-grid .wide{grid-column:auto}.actionbar .price{font-size:18px}.grid2 .product img{height:140px}dialog{padding:22px}.stage-hint{left:10px;bottom:10px;right:10px;font-size:11px}.table{display:block;overflow:auto}}
@media(prefers-reduced-motion:no-preference){button,.product{transition:background .15s,box-shadow .15s}dialog[open]{animation:appear .18s ease-out}@keyframes appear{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}}

.door-layer{isolation:isolate}.color-layer{position:absolute;inset:0;pointer-events:none;background-size:100% 100%;mask-size:100% 100%;mask-repeat:no-repeat;mix-blend-mode:color;opacity:.5}.hw-layer{overflow:hidden}
/* TEST01-R03 acceptance: keep the primary headline together at desktop widths. */
.hero article{max-width:440px;padding:32px}
@media(max-width:899px){.hero article{max-width:320px;padding:24px}}
@media(max-width:599px){.hero article{max-width:280px}}

.step-head>.inline{flex:0 0 auto}.step-head>.inline button{flex:none;white-space:nowrap}.step-head>.inline{gap:8px}

[hidden]{display:none!important}.solution-faces,.detail-previews{display:grid;grid-template-columns:1fr 1fr;gap:4px}.solution-faces img{height:160px;object-fit:contain;background:#eee}.detail-previews img{width:100%;height:190px;object-fit:contain;background:#eee}

/* TEST01-R04: actual material thumbnails and contained responsive navigation. */
.swatch img{display:block;width:100%;height:48px;object-fit:cover;border-radius:0}.swatch{flex-direction:column;min-width:0}.swatch span{overflow-wrap:anywhere}.inspector .full+.full{margin-top:6px}
@media(max-width:699px){.top{height:auto;min-height:68px;flex-wrap:wrap;gap:8px;padding:12px 16px}.top nav{width:100%;justify-content:flex-end;flex-wrap:wrap}.top nav button{min-height:44px}.brand{max-width:100%}.step-title{min-width:0}.substeps{flex-wrap:wrap}.canvas-top{flex-wrap:wrap}.actionbar{flex-wrap:wrap;gap:10px}.actionbar .progress-note{flex-basis:calc(100% - 120px);max-width:none}.actionbar>.primary{flex:1;white-space:normal}.inline{min-width:0}.solution-faces img{width:100%;min-width:0}}
/* Customer feedback: hardware picker image bounds are 60% of their previous size. */
.hardware-options .hardware-product img{width:60%;height:76.8px;margin-inline:auto;object-fit:contain;flex:none}
.hardware-options .hardware-product{padding:8px;gap:6px;justify-content:flex-start}
@media(max-width:599px){.hardware-options .hardware-product img{height:84px}}

.hardware-product{min-width:0;background:#f4f4f1;border-radius:4px;padding:8px;display:flex;flex-direction:column;gap:6px}.hardware-product.active{box-shadow:inset 0 -3px #171717}.hardware-image{width:100%;display:flex;flex-direction:column;align-items:center;padding:0;background:transparent;gap:6px}.hardware-image:hover{background:transparent}.view-detail{color:#666;font-size:11px;line-height:1.3}.hardware-select{width:100%;background:transparent;flex-direction:column;padding:4px 0;gap:2px;min-height:44px}.hardware-select span{font-size:13px;line-height:1.5;overflow-wrap:anywhere}.hardware-select small{font-size:12px}.hardware-detail-image{background:#f5f5f3;padding:20px;margin-bottom:20px;display:flex;justify-content:center}.hardware-detail-image img{display:block;max-width:100%;max-height:48vh;object-fit:contain}.hardware-options .hardware-image img{width:60%;height:76.8px;margin-inline:auto;object-fit:contain}
@media(max-width:599px){.hardware-options .hardware-image img{height:84px}}

/* TEST01-R05: readable solution cards with equal action rows. */
.solutions{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;align-items:stretch}
.solution{display:flex;flex-direction:column;min-width:0;border-radius:6px}
.solution-faces{gap:4px;background:#f1f1ee}
.solution-faces figure{position:relative;margin:0;min-width:0;aspect-ratio:16/10}
.solution-faces img{display:block;width:100%;height:100%;object-fit:contain}
.solution-faces figcaption{position:absolute;bottom:10px;left:12px;padding:4px 8px;background:rgba(255,255,255,.9);color:#555;font-size:12px;line-height:1.4;border-radius:2px}
.solution-body{padding:24px;display:flex;flex-direction:column;flex:1;min-width:0}
.solution-meta{display:flex;gap:12px;align-items:center;justify-content:space-between;font-size:12px;line-height:1.5;color:#70706b;flex-wrap:wrap}
.solution-state{padding:4px 8px;background:#f3f3f1;color:#666;white-space:nowrap;border-radius:3px}
.solution-body h2{margin:16px 0 10px;font-size:24px;font-weight:400;line-height:1.4;overflow-wrap:anywhere}
.solution-description{margin:0;color:#666;font-size:14px;line-height:1.6;overflow-wrap:anywhere}
.solution-estimate{display:flex;flex-direction:column;gap:4px;padding:20px 0 24px;margin-top:auto}
.solution-estimate>span{font-size:12px;line-height:1.5;color:#74746e}
.solution-estimate>strong{font-size:28px;line-height:1.3;font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.solution-actions{display:flex;flex-direction:column;gap:12px}
.solution-primary,.solution-utilities{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.solution-actions button{width:100%;min-width:0;white-space:nowrap;line-height:1.4;font-size:14px;padding:12px;min-height:46px}
.solution-primary button{min-height:48px}
.solution-utilities{gap:8px;align-content:start;min-height:100px}
.solution-utilities button{background:#f3f3f1;color:#565651;font-size:13px}
.solution-utilities button:hover{background:#e9e9e5;color:#171717}
.solution-utilities>button:last-child:nth-child(odd){grid-column:1/-1}
@media(max-width:760px){.solutions{grid-template-columns:1fr;gap:22px}.solution-body{padding:20px}.solution-body h2{font-size:22px}.solution-estimate>strong{font-size:26px}.heading-row{align-items:flex-start;gap:16px}.heading-row>.primary{white-space:nowrap;flex:none}.solution-faces figcaption{left:8px;bottom:8px;font-size:11px}}
@media(max-width:380px){.solution-body{padding:16px}.solution-meta{gap:6px}.solution-actions button{padding:10px 7px;font-size:13px}.heading-row{flex-wrap:wrap}.solution-faces figure{aspect-ratio:4/3}}

/* TEST01-R06 enterprise workspace, same neutral typography and controls. */
.enterprise-shell{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:calc(100vh - 76px)}.enterprise-nav{background:white;padding:28px 16px;display:flex;flex-direction:column;gap:6px}.enterprise-name{font-size:18px;line-height:1.5;padding:0 12px 22px;overflow-wrap:anywhere}.enterprise-name small{display:block;font-size:12px;margin-top:8px}.enterprise-nav>button{justify-content:flex-start;text-align:left;background:transparent}.enterprise-nav>button.active{background:#171717;color:white}.enterprise-nav .enterprise-settings{margin-top:auto}.enterprise-main{padding:32px;min-width:0}.enterprise-main .heading-row h1{margin-bottom:0}.enterprise-metrics{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.enterprise-metrics .card{display:flex;flex-direction:column;gap:12px;min-width:0}.enterprise-metrics span{font-size:14px;color:#666}.enterprise-metrics strong{font-size:34px;font-weight:400}.enterprise-table{overflow:auto;margin:20px 0;background:white;border-radius:6px}.enterprise-table th{white-space:nowrap}.enterprise-table td{vertical-align:middle;min-width:90px}.enterprise-table td small{display:block;font-size:12px}.enterprise-table code{font-size:11px;overflow-wrap:anywhere}.enterprise-table button{padding:9px 12px;margin:4px;font-size:13px;white-space:nowrap}.enterprise-toolbar{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap}.enterprise-toolbar label{flex:1;min-width:180px}.enterprise-links{display:flex;flex-wrap:wrap;gap:10px}.role-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.role-grid label{display:flex;align-items:center;gap:10px;margin:0}.role-grid input{width:18px;height:18px;min-height:18px;accent-color:#171717;margin:0}.auth-links{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media(max-width:1100px){.enterprise-shell{grid-template-columns:180px minmax(0,1fr)}.enterprise-main{padding:24px}.enterprise-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){.enterprise-shell{display:block}.enterprise-nav{display:flex;flex-direction:row;overflow:auto;padding:12px;gap:8px}.enterprise-name{display:none}.enterprise-nav>button{white-space:nowrap;flex:none}.enterprise-main{padding:20px 16px}.enterprise-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}