:root{--ink:#102345;--blue:#087dff;--line:#dce7f4;--muted:#63758c;--paper:#f6faff}*{box-sizing:border-box}body{font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#f4f8fe}button,input,select{font:inherit}button{cursor:pointer;border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:10px;padding:10px 14px;transition:background .15s,border-color .15s}button:hover{background:#edf5ff;border-color:#9ec8ff}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #90bdff;outline-offset:2px}button.primary{background:var(--blue);border-color:var(--blue);color:white;box-shadow:0 4px 12px #087dff20}button:disabled{opacity:.4;cursor:default}[hidden]{display:none!important}#welcome{display:none;min-height:100dvh;background:radial-gradient(ellipse at 90% 15%,#dfeeff,transparent 52%),#f7fbff}.at-home #welcome{display:block}.at-home #studio{display:none}.welcome-nav{height:90px;display:flex;justify-content:space-between;align-items:center;margin:0 auto;max-width:1240px;padding:0 36px;border-bottom:1px solid #dce7f4}.wordmark{display:flex;align-items:baseline;gap:16px;text-decoration:none;font-size:30px;font-weight:800;color:var(--ink)}.wordmark span{font-size:13px;font-weight:400;color:var(--muted)}.welcome-content{max-width:1168px;padding:50px 24px 24px;margin:auto}.kicker{color:var(--blue);font-size:14px;font-weight:600}.intro h1{font-size:clamp(36px,4.3vw,62px);letter-spacing:-2px;line-height:1.2;margin:15px 0 20px}.intro h1 br{display:none}.intro p{font-size:16px;line-height:1.9;color:var(--muted);margin:0}.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}.entry-grid>button{text-align:left;background:#ffffffc9;padding:25px 28px;box-shadow:0 8px 25px #193f7810;border-radius:18px;display:flex;flex-direction:column;gap:12px}.entry-grid i{font-style:normal;font-size:34px;color:#4f98ff}.entry-grid strong{font-size:23px}.entry-grid span{font-size:14px;color:var(--muted)}.entry-grid b{font-size:13px;color:var(--blue);margin-top:12px}.recent{display:grid;grid-template-columns:1fr 1.5fr;align-items:center;gap:40px;margin-top:44px}.recent h2{font-size:20px;margin:0 0 10px}.recent p{font-size:13px;color:var(--muted)}.recent button{display:grid;grid-template-columns:1fr auto;text-align:left;padding:24px;border-radius:16px;background:#ffffffc9}.recent strong{font-size:18px}.recent span{grid-row:2;color:var(--muted);font-size:13px;margin-top:8px}.recent b{grid-column:2;grid-row:1/3;align-self:center;color:var(--blue);font-size:14px}.welcome-foot{position:static;background:none;border:none;padding:30px 0 0;display:flex;justify-content:space-between;font-size:12px;color:#8293a9;margin-top:30px}#studio{height:100dvh;display:grid;grid-template-rows:68px 58px minmax(0,1fr) 62px}#studio header{background:#fff;border-bottom:1px solid var(--line);padding:0 22px;gap:25px}.brand{border:none;font-size:25px;font-weight:800;padding:0;background:none!important}.brand span{display:none}.project{min-width:150px}.project input{color:var(--ink);font-size:15px;background:none;border:0;width:190px}.project span{font-size:10px;color:var(--muted)}.header-actions{gap:8px}.header-actions button{font-size:12px;padding:8px 12px}#steps{display:flex;align-items:center;gap:18px;background:#f8fbff;border:0;padding:0 22px}#steps>button{background:none;border:0;padding:6px 0;flex:none;font-size:13px;display:flex;gap:8px;align-items:center}#steps>button b{width:25px;height:25px;border-radius:50%;background:#e6edf7;display:grid;place-items:center;font-size:12px}#steps>button.active{color:var(--blue)}#steps>button.active b{background:var(--blue);color:#fff}#steps>span{color:#bed0e7}#design-tabs{margin-left:auto;display:flex;background:white;border:1px solid var(--line);border-radius:10px;padding:3px;gap:2px}#design-tabs button{padding:5px 18px;font-size:13px;border:0;background:none}#design-tabs button.active{background:#eaf3ff;color:var(--blue)}.workspace{padding:0 14px 12px;gap:12px;display:grid;grid-template-columns:240px minmax(0,1fr) 250px;min-height:0}.left-panel,.right-panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;overflow:auto;min-width:0}#canvas-area{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#f7faff;min-width:0}h2{font-size:19px;letter-spacing:0;font-weight:650}h3{font-size:13px;margin-top:20px}p,.note{color:var(--muted);font-size:12px;line-height:1.7}.eyebrow{display:none}input,select{border:1px solid var(--line);border-radius:8px;color:var(--ink);padding:8px;width:100%;background:#fff}label{color:var(--muted);font-size:12px}input[type=color]{height:34px;padding:3px}#plan-toolbar{padding:12px;gap:8px;flex-wrap:wrap;background:#ffffffec;position:absolute;left:0;right:0;top:0;border-bottom:1px solid var(--line);z-index:2}#plan-toolbar button{font-size:11px;padding:7px 9px}.segmented{background:#fff;border:1px solid var(--line);border-radius:10px;padding:3px}.segmented button{border:0;background:none}.segmented button.active{background:#eaf3ff;color:var(--blue)}#plan-canvas{background:#f8fbff;width:100%;height:100%}.room-row.active{background:#edf5ff;color:var(--blue);border-color:#b1d3ff}.template-drawer summary{cursor:pointer;color:var(--blue);font-size:13px;padding:14px 0}.template{border:1px solid var(--line);border-radius:10px}.template strong{font-size:13px}.template small{font-size:10px}.mini-plan{max-height:90px}.upload-box{font-size:13px;background:#f7fbff;border:1px dashed #b6cff1}.upload-box span{font-size:10px}.room-list{gap:5px}.room-row{font-size:12px;padding:9px}.room-row small{font-size:10px}.catalog{grid-template-columns:1fr 1fr;gap:10px}.asset-card{padding:0 0 10px;overflow:hidden;border-radius:10px}.asset-card img{width:100%;aspect-ratio:1;object-fit:cover;background:#f3f6fb}.asset-card strong{font-size:11px;padding:0 7px}.asset-card small{font-size:10px}.item-list{max-height:200px;overflow:auto}.item-list button{font-size:11px}.material-card{font-size:12px}.swatch{border-radius:50%}#view-toolbar{top:auto;bottom:44px;left:50%;right:auto;transform:translateX(-50%);white-space:nowrap;gap:6px;border-radius:30px;padding:5px;background:#ffffffef;box-shadow:0 5px 18px #142e4920}#view-toolbar button{font-size:11px;padding:7px 10px}#canvas-hint{left:50%;transform:translateX(-50%);bottom:14px;width:max-content;max-width:95%;background:#ffffffdc;border:1px solid var(--line);border-radius:20px;padding:7px 13px;color:var(--muted);font-size:10px;text-align:center}#walk-controls{display:none!important}#placement-bar{bottom:95px;background:var(--blue);color:#fff;border-radius:12px;left:15px;right:15px;padding:12px}#studio>footer{background:#fff;border-top:1px solid var(--line);padding:10px 22px}#plan-summary{font-size:12px}#validation-summary{font-size:11px;color:var(--muted)}#validation-summary.error{color:#ad4b32}#toast{background:#142e49;border-radius:12px;color:white}#studio[data-phase=preview] .workspace{grid-template-columns:1fr}#studio[data-phase=preview] .left-panel,#studio[data-phase=preview] .right-panel,#studio[data-phase=preview]>footer{display:none}#studio[data-phase=preview]{grid-template-rows:68px 58px minmax(0,1fr)}#studio[data-phase=preview] #steps>[data-phase],#studio[data-phase=preview] #steps>span{display:none}#leave-preview{display:block;margin-right:auto!important}.scenery-list{display:grid;gap:10px}.scenery-list button{padding:0;overflow:hidden;text-align:left}.scenery-list img{width:100%;height:100px;object-fit:cover}.scenery-list strong{display:block;padding:10px;font-size:13px}.scenery-list .selected{border-color:var(--blue)}.original-sky{height:60px;background:linear-gradient(120deg,#cde5fb,#f6faff);padding:20px;font-size:13px}@media(min-width:1600px){.workspace{grid-template-columns:260px minmax(0,1fr) 270px}}@media(max-width:1100px){.workspace{grid-template-columns:200px minmax(0,1fr) 220px}.left-panel,.right-panel{padding:14px}#studio header{gap:10px}.header-actions button{padding:7px}.project input{width:135px}#plan-toolbar .segmented{flex-wrap:wrap;display:flex}.catalog{gap:5px}#design-tabs button{padding:5px 12px}}@media(max-width:760px){.welcome-nav{padding:0 20px;height:72px}.welcome-content{padding:32px 20px}.intro h1 br{display:block}.intro h1{font-size:42px}.entry-grid{grid-template-columns:1fr;gap:10px;margin-top:24px}.entry-grid>button{padding:18px 20px;display:grid;grid-template-columns:40px 1fr auto;gap:5px 12px}.entry-grid i{grid-row:1/3}.entry-grid strong{font-size:18px}.entry-grid span{grid-column:2;font-size:12px}.entry-grid b{grid-column:3;grid-row:1/3;align-self:center;font-size:11px;margin:0}.recent{grid-template-columns:1fr;gap:12px;margin-top:30px}.welcome-foot{font-size:10px;gap:10px}#studio{height:auto;min-height:100dvh;display:block}#studio header{height:65px;padding:10px;flex-wrap:wrap}.project{min-width:0}.project input{width:120px}.header-actions{margin-left:auto}.header-actions #undo,.header-actions #redo,.header-actions #import-plan,.header-actions #export-plan{display:none}.header-actions #save{font-size:11px}#steps{padding:10px;gap:10px;flex-wrap:wrap;min-height:54px}#steps>button{font-size:12px}#design-tabs{width:100%;justify-content:space-around}.workspace{display:flex;flex-direction:column;padding:0 10px 10px;gap:10px}.left-panel{order:2;max-height:370px}.right-panel{order:3;max-height:420px}#canvas-area{order:1;flex:none;height:54dvh;min-height:320px}.left-panel .templates{display:grid;grid-template-columns:1fr 1fr}.catalog{grid-template-columns:repeat(3,1fr)}.asset-card img{max-height:130px}.scenery-list{grid-template-columns:1fr 1fr}#studio>footer{position:sticky;bottom:0;z-index:5;gap:6px;padding:10px}#studio>footer>div:first-child{max-width:45%}#validation-summary{display:none}#studio[data-phase=preview] #canvas-area{height:calc(100dvh - 125px)}#view-toolbar #focus-room{display:none}}

@media(max-width:760px){#studio header{height:auto;min-height:65px}.header-actions{width:100%;justify-content:flex-end}.header-actions #undo,.header-actions #redo,.header-actions #import-plan,.header-actions #export-plan{display:inline-flex}.header-actions button{font-size:10px;padding:6px 8px}#studio[data-phase=preview] #canvas-area{height:calc(100dvh - 160px)}}

#preview-room{max-width:160px;margin-left:auto}#studio[data-phase=preview] #view-toolbar #focus-room{display:none}

.replace-dialog{border:1px solid var(--line);border-radius:20px;padding:28px;width:min(420px,90vw);color:var(--ink);box-shadow:0 20px 80px #17375c33}.replace-dialog::backdrop{background:#17375c55;backdrop-filter:blur(3px)}.replace-dialog>div{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}
/* Design-board alignment: the same centered hierarchy and compact editing chrome. */
:root{--green:#087dff}h2,.brand{font-family:inherit}.brand{color:var(--ink);letter-spacing:0}small,.muted,#inspector .subtitle{color:var(--muted)}
#steps button{min-width:0}#steps button.active:after{display:none}#steps>span{margin:0}#steps b{margin:0}
#welcome{margin:16px;border:1px solid #d3e4fa;border-radius:24px;min-height:calc(100dvh - 32px);box-shadow:0 5px 18px #3076b71a;background:radial-gradient(ellipse at 50% 45%,#fff 0%,#f1f7ff 75%)}
.welcome-nav{height:80px;max-width:none;padding:0 52px;margin:0;border-bottom:1px solid #d5e5f8}.wordmark{font-size:32px;letter-spacing:0}.wordmark span{display:none}.welcome-actions{display:flex;align-items:center;gap:32px}.welcome-actions #resume-top{border:0;background:transparent}.welcome-actions .primary{padding:10px 28px;border-radius:20px}.welcome-content{max-width:1168px;padding:46px 40px 28px}.intro{text-align:center}.intro h1{font-size:clamp(32px,3.8vw,54px);letter-spacing:0;line-height:1.3;margin:0 0 12px;font-weight:750}.intro h1 br{display:none}.intro p{font-size:17px;color:#344e78;line-height:1.7}.entry-grid{gap:24px;margin-top:44px}.entry-grid>button{position:relative;text-align:center;align-items:center;justify-content:center;min-height:210px;border-radius:18px;border-color:#cee1fc;padding:25px 16px;gap:9px;background:linear-gradient(135deg,#ffffffd9,#f4f9ff);box-shadow:0 7px 15px #3676bb15}.entry-grid i{display:block;width:52px;height:52px;margin-bottom:5px}.entry-grid svg{width:100%;height:100%;fill:none;stroke:#579eff;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.entry-grid strong{font-size:24px}.entry-grid span{font-size:16px;color:#425c81}.entry-grid b{position:absolute;right:24px;bottom:43px;font-weight:400;font-size:25px;color:#102345;margin:0}.recent{display:block;margin-top:40px}.recent>div{display:flex;align-items:baseline;justify-content:space-between}.recent h2{font-family:inherit;font-size:23px;font-weight:650;margin:0 0 16px}.recent p{font-size:12px;margin:0;color:#63758c}.recent button{width:100%;display:grid;grid-template-columns:29% minmax(0,1fr) auto;grid-template-rows:1fr 1fr;gap:0 24px;padding:12px;border-radius:16px;border-color:#d6e5f9;min-height:145px;box-shadow:0 3px 10px #3676bb08}.recent .recent-cover{display:block;grid-column:1;grid-row:1/3;align-self:stretch;border-radius:10px;background:url('./design-board.png') 100% 100% / 205% 210%;margin:0;min-height:120px}.recent strong{grid-column:2;grid-row:1;align-self:end;font-size:20px;padding-bottom:7px}.recent #recent-size{grid-column:2;grid-row:2;font-size:15px;margin:0}.recent b{grid-column:3;grid-row:1/3;background:#dfedff;border:1px solid #d3e6ff;border-radius:12px;padding:12px 23px;font-size:16px;margin-right:10px}.welcome-foot{display:none}
#studio{min-height:0;grid-template-rows:64px minmax(0,1fr) 48px;position:relative}#studio header{height:64px;gap:15px;padding:0 26px}.project{border:0;padding:0}.project input{width:160px;font-size:12px}.project span{font-size:9px}.header-actions button{padding:7px 10px;font-size:11px}.header-actions #import-plan,.header-actions #export-plan{font-size:10px}#steps{position:absolute;top:0;left:31%;right:28%;height:64px;padding:0;gap:14px;justify-content:center;background:none;z-index:4;pointer-events:none}#steps>button,#steps>div,#steps>select{pointer-events:auto}#steps>button{font-size:12px;white-space:nowrap}#steps>span{font-size:12px}.workspace{padding:12px;gap:10px;grid-template-columns:220px minmax(0,1fr) 240px}.left-panel,.right-panel{padding:16px;border-color:#d6e6fa;border-radius:14px}#canvas-area{border-radius:12px}#studio>footer{height:48px;padding:6px 22px}#studio>footer button{padding:7px 15px}#studio[data-phase=design] .workspace{position:relative;grid-template-columns:220px minmax(0,1fr) 230px}.left-panel{padding-top:16px}#studio[data-phase=design] .left-panel{padding-top:54px}#design-tabs{position:fixed;top:84px;left:24px;margin:0;width:196px;border:0;border-radius:0;padding:0 0 8px;background:#fff;border-bottom:1px solid #dfebfa;justify-content:space-between}#design-tabs button{min-width:0;padding:5px 7px;font-size:12px;border-radius:0}#design-tabs button.active{background:none;border-bottom:2px solid var(--blue)}#left-content>h2{font-size:16px}#left-content>p{font-size:11px}.asset-card img{height:105px;object-fit:contain}.asset-card strong{text-align:center}.asset-card small{display:block;text-align:center}.right-panel h2{font-size:18px}.right-panel .subtitle{margin-bottom:14px}#placement-bar{top:auto;bottom:100px;left:50%;right:auto;transform:translateX(-50%);width:max-content;max-width:calc(100% - 32px);height:auto;min-height:44px;padding:8px 12px;gap:24px;border:1px solid #c7defc;background:#fffffff5;color:#18385e;box-shadow:0 5px 20px #18385e22;border-radius:12px;pointer-events:none}#placement-bar button{pointer-events:auto;background:#edf5ff;color:#087dff;border:1px solid #cde1ff}#placement-label{font-size:12px}#view-toolbar{bottom:36px}#canvas-hint{bottom:7px;padding:4px 10px}#studio[data-phase=preview]{grid-template-rows:64px minmax(0,1fr)}#studio[data-phase=preview] #steps{left:140px;right:360px;justify-content:flex-start}#preview-room{margin-left:auto}#studio[data-phase=preview] .project{display:none}
@media(max-width:1100px) and (min-width:761px){.project{display:none}#steps{left:100px;right:330px;gap:10px}.workspace,#studio[data-phase=design] .workspace{grid-template-columns:185px minmax(0,1fr) 210px}#design-tabs{width:160px;left:22px}#design-tabs button{padding:5px}.entry-grid>button{min-height:180px}.entry-grid strong{font-size:20px}.entry-grid span{font-size:13px}.entry-grid b{right:14px;bottom:30px}}
@media(max-width:760px){#welcome{margin:8px;min-height:calc(100dvh - 16px);border-radius:16px}.welcome-nav{height:64px;padding:0 20px}.wordmark{font-size:25px}.welcome-actions{gap:8px}.welcome-actions button{font-size:12px}.welcome-actions .primary{padding:8px 15px}.welcome-content{padding:28px 20px}.intro h1{font-size:30px}.intro p{font-size:13px}.entry-grid{margin-top:26px;gap:12px}.entry-grid>button{min-height:100px;display:grid;grid-template-columns:40px 1fr;grid-template-rows:1fr 1fr;text-align:left;padding:17px 20px;gap:4px 15px;align-items:center}.entry-grid i{grid-row:1/3;width:36px;height:36px;margin:0}.entry-grid strong{font-size:18px;align-self:end}.entry-grid span{font-size:12px;align-self:start}.entry-grid b{right:18px;bottom:35px;font-size:23px}.recent{margin-top:28px}.recent h2{font-size:18px}.recent p{display:none}.recent button{grid-template-columns:30% 1fr;min-height:110px;gap:0 12px}.recent .recent-cover{min-height:85px;grid-row:1/4}.recent strong{font-size:14px}.recent #recent-size{font-size:12px}.recent b{grid-column:2;grid-row:3;font-size:12px;padding:5px 10px;width:max-content;margin-top:6px}#studio{display:block}#studio header{height:auto;min-height:64px;padding:10px}.project{display:block}#steps,#studio[data-phase=preview] #steps{position:relative;inset:auto;width:100%;height:auto;min-height:48px;padding:8px 12px;gap:12px;justify-content:center}.workspace,#studio[data-phase=design] .workspace{display:flex;flex-direction:column;padding:0 8px 8px}.left-panel,.right-panel{width:100%;padding:14px}.left-panel{max-height:420px}#studio[data-phase=design] .left-panel{padding-top:14px}#design-tabs{position:static;width:100%;padding:3px;background:transparent;border:none;justify-content:space-around}#canvas-area{height:52dvh;min-height:320px}#studio>footer{height:auto}#studio[data-phase=preview] #canvas-area{height:calc(100dvh - 170px)}#placement-bar{bottom:96px;gap:8px;max-width:95%;padding:8px}#placement-label{font-size:11px}.catalog{grid-template-columns:repeat(3,1fr)}}
.recent .recent-cover{background-size:795.85% 1190.7%;background-position:4.84% 42.64%}
@media(min-width:761px){#studio[data-phase=plan] .workspace{grid-template-columns:minmax(0,1fr) 240px}#studio[data-phase=plan] .left-panel{display:none;position:absolute;top:82px;left:96px;bottom:65px;width:240px;z-index:6;box-shadow:0 12px 35px #17375c25}#studio[data-phase=plan].plan-options-open .left-panel{display:block}#studio[data-phase=plan] #plan-toolbar{left:10px;top:12px;right:auto;width:68px;padding:6px;border:1px solid #deebfa;box-shadow:0 2px 10px #326cb510;border-radius:12px;display:flex;flex-direction:column;gap:8px;background:#fff}#plan-toolbar .segmented{display:flex;flex-direction:column;border:0;padding:0;width:100%;gap:6px}#plan-toolbar button{width:100%;white-space:normal;padding:11px 4px;font-size:11px}#plan-toolbar [data-tool=select]{font-size:0}#plan-toolbar [data-tool=select]:after{content:'选择';font-size:11px}#plan-toolbar [data-tool=rect]{font-size:0}#plan-toolbar [data-tool=rect]:after{content:'▢ 房间';font-size:11px}#plan-toolbar [data-tool=polygon]{font-size:0}#plan-toolbar [data-tool=polygon]:after{content:'⌁ 轮廓';font-size:11px}#plan-toolbar [data-tool=door]:before{content:'⊓ ';font-size:16px}#plan-toolbar [data-tool=window]:before{content:'⊞ ';font-size:16px}#plan-toolbar [data-tool=pan]:before{content:'✥ ';font-size:15px}#plan-toolbar #fit-plan{border:0;background:#eef5ff;color:#087dff}}
.material-card.active{background:#edf5ff;border-color:#88baff;color:#102345}.swatch[aria-pressed=true]{box-shadow:0 0 0 2px #087dff}.auto-options{margin:0 0 12px;border:1px solid #dce7f4;border-radius:8px;padding:9px;font-size:12px}.auto-options summary{cursor:pointer;color:#087dff}.auto-options button{margin-top:8px;padding:7px;font-size:11px}#studio[data-inspector=none] #left-content>h2,#studio[data-inspector=object] #left-content>h2,#studio[data-inspector=none] #left-content>p,#studio[data-inspector=object] #left-content>p{display:none}
@media(min-width:761px){#design-tabs{top:77px;padding-top:10px;padding-bottom:9px}#studio[data-phase=design][data-inspector=none] .workspace,#studio[data-phase=design][data-inspector=object] .workspace{grid-template-columns:220px minmax(0,1fr)}#studio[data-phase=design][data-inspector=none] .right-panel{display:none}#studio[data-phase=design][data-inspector=object] .right-panel{position:absolute;right:25px;top:26px;width:215px;max-height:calc(100% - 130px);z-index:3;box-shadow:0 8px 24px #10234518;background:#fffffff5}#studio[data-phase=design][data-inspector=object] #inspector label{font-size:11px;margin-top:8px}}
@media(min-width:761px) and (max-width:1100px){#studio[data-phase=design][data-inspector=none] .workspace,#studio[data-phase=design][data-inspector=object] .workspace{grid-template-columns:185px minmax(0,1fr)}}