:root{color-scheme:light;--paper:#f3efe5;--ink:#263b2f;--muted:#71756a;--line:#d9d9cd;--accent:#455c47;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a,summary,input[type=range]{touch-action:manipulation}button,summary{cursor:pointer}button:disabled{cursor:default;opacity:.45}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid #a95f3d;outline-offset:4px}button{color:inherit}button,fieldset{border:0}button{background:none}button[hidden],[hidden]{display:none!important}.skip-link{position:absolute;left:20px;top:8px;transform:translateY(-160%);z-index:20;background:var(--ink);color:white;padding:12px}.skip-link:focus{transform:none}.site-header{max-width:1440px;margin:auto;padding:0 48px;min-height:88px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:baseline;gap:9px;font-size:34px;letter-spacing:-2px;font-weight:500}.brand-mark{display:flex;gap:2px}.brand-mark i{width:7px;height:12px;background:#bc7754}.brand-mark i:nth-child(2){background:#d7cdaf}.brand-mark i:nth-child(3){background:#788f82}.tool-name{border-left:1px solid #c7cbbb;padding-left:22px;font-size:14px;letter-spacing:2px}.header-right{margin-left:auto;display:flex;align-items:center;gap:30px;font-size:12px}.local-badge{display:flex;gap:8px;align-items:center;color:#576d55}.back-link{min-height:44px;display:flex;align-items:center}main{max-width:1440px;margin:auto;padding:0 48px}.intro{border-top:1px solid var(--line);padding:42px 0 30px;display:flex;justify-content:space-between;align-items:flex-end;gap:30px}.eyebrow{margin:0 0 13px;font-size:10px;letter-spacing:2.2px;color:var(--muted)}h1{font-family:"Songti SC","STSong",serif;font-size:38px;line-height:1.4;font-weight:400;letter-spacing:-1px;margin:0}.intro-note{font-size:12px;color:var(--muted);line-height:1.9;margin:0 2px 3px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:36px;align-items:start}.preview-section{min-width:0;position:sticky;top:22px}.stage{aspect-ratio:1/1;width:100%;position:relative;overflow:hidden;border-radius:4px;background:#f7f4ec;isolation:isolate;border:1px solid #e2dfd5}.stage[data-background=dark]{background:#0d1015;border-color:#0d1015;color:#eceee7}.stage[data-background=transparent],.checker{background-color:#f4f3ee;background-image:conic-gradient(#e1e2db 25%,transparent 0 50%,#e1e2db 0 75%,transparent 0);background-size:24px 24px}.stage canvas{display:block;width:100%;height:100%;touch-action:pan-y;cursor:grab}.stage canvas:active{cursor:grabbing}.stage-top,.stage-bottom{position:absolute;left:26px;right:26px;display:flex;align-items:center;justify-content:space-between;gap:12px;pointer-events:none;font-size:11px;z-index:2}.stage-top{top:24px;opacity:.7}.stage-label{letter-spacing:2px}.stage-bottom{bottom:20px}.play-button{border:1px solid currentColor;border-radius:24px;padding:6px 12px;min-height:34px;font-size:11px;pointer-events:auto;opacity:.65}.stage-bottom>span{opacity:.6}.preview-caption{display:flex;justify-content:space-between;align-items:center;padding:10px 2px;font-size:11px;color:var(--muted)}.text-button{font-size:12px;text-decoration:underline;text-underline-offset:4px;min-height:38px;padding:4px 0}.local-note{border-top:1px solid var(--line);margin-top:8px;padding:20px 2px;display:flex;gap:12px;font-size:12px;align-items:flex-start}.local-note>span{font-size:22px;color:#91a18b}.local-note p{margin:0;line-height:1.8}.local-note p span{color:var(--muted)}.offline-info{margin-left:auto;max-width:190px;color:var(--muted);font-size:11px;line-height:1.8}.offline-info summary{padding:3px 0}.offline-info p{margin-top:8px}.controls{border-top:1px solid var(--line)}.control-section{padding:22px 0;border-bottom:1px solid var(--line)}.control-section:first-child{padding-top:20px}h2{font-size:14px;font-weight:500;margin:0 0 18px}h2 span{font-family:Georgia,serif;color:#a0a391;font-size:15px;font-style:italic;margin-right:12px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.section-heading h2{margin:0}.section-heading .text-button{color:var(--muted)}.import-button{width:100%;min-height:104px;border:1px dashed #a8b09b;background:#fbfaf450;border-radius:3px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;transition:background .2s}.import-button:hover{background:#e6ebdf}.import-symbol{font-size:24px;font-weight:300;line-height:1}.import-button strong{font-size:13px;font-weight:500}.import-button small{font-size:11px;color:var(--muted)}.field-hint{font-size:11px;color:var(--muted);line-height:1.8;margin:10px 0 0}.import-status:empty,.export-status:empty{display:none}.import-status,.export-status{font-size:12px;line-height:1.8;margin:10px 0 0;overflow-wrap:anywhere}.error{color:#a33e2b}#photo-list summary{font-size:12px;margin-top:8px;min-height:32px;line-height:32px}.thumbnails{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;max-height:180px;overflow:auto;padding:4px}.thumbnail{position:relative;aspect-ratio:1;background:#e5e4da;min-width:0}.thumbnail img{width:100%;height:100%;object-fit:contain}.thumbnail button{position:absolute;right:-3px;top:-3px;border-radius:50%;background:#24382d;color:#fff;min-width:24px;min-height:24px;font-size:16px;line-height:1}.background-field{padding:0;margin:0 0 20px;min-width:0}.background-field legend{font-size:12px;margin-bottom:10px;padding:0}.background-options{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.background-options button{display:flex;align-items:center;gap:8px;justify-content:center;border:1px solid var(--line);padding:9px 4px;font-size:12px;min-height:42px;border-radius:3px}.background-options button[aria-pressed=true]{border-color:var(--ink);box-shadow:0 0 0 1px var(--ink) inset;background:#e8ecdf}.swatch{width:17px;height:17px;border-radius:50%;border:1px solid #00000014}.swatch.light{background:#fffaf0}.swatch.dark{background:#1b2028}.swatch.checker{background-size:8px 8px}.range-label{display:flex;justify-content:space-between;align-items:center;font-size:12px}.range-label span{font-size:10px;color:var(--muted)}input[type=range]{width:100%;accent-color:var(--accent);margin:10px 0 17px;height:16px}.check-label{font-size:12px;display:flex;align-items:center;gap:8px;min-height:30px}.check-label input{width:16px;height:16px;margin:0;accent-color:var(--accent)}.check-label+.field-hint{margin-top:2px}.select-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:20px;font-size:12px}select{appearance:auto;color:var(--ink);background:#faf9f2;border:1px solid var(--line);border-radius:3px;padding:9px 8px;font-size:12px;max-width:100%;min-height:40px}.export-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.export-fields label{display:flex;flex-direction:column;gap:8px;font-size:12px}.export-fields select{width:100%}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;border-radius:3px;padding:14px 18px;min-height:48px;font-size:13px;font-weight:500}.primary{background:var(--ink);color:#f8f5e9}.primary:hover:enabled{background:#405641}.export-button{width:100%;margin-top:18px}.progress-label{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin-top:12px}progress{width:100%;height:6px;accent-color:var(--accent);display:block}.result-download{display:block;margin-top:10px;text-decoration:underline;font-size:13px;line-height:44px}.tool-footer{border-top:1px solid var(--line);margin:40px 0 0;padding:23px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:10px;color:var(--muted);letter-spacing:.3px}.tool-footer>div{display:flex;gap:22px;align-items:center}.footer-dot{margin:0 8px}.empty-state{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;font-size:14px}.empty-orbit{font:120px Georgia,serif;color:#b8c2ad}.drop-overlay{position:absolute;inset:0;display:flex;justify-content:center;align-items:center;background:#edf2e4e8;z-index:5;outline:2px dashed #65765a;outline-offset:-16px;font-family:"Songti SC",serif;font-size:24px}.noscript{padding:30px;text-align:center;color:#a33e2b}body.busy .controls{pointer-events:none}body.busy #cancel,body.busy #download-result{pointer-events:auto}body.busy .stage{pointer-events:none}body.busy #export-progress{pointer-events:auto}
@media(min-width:1400px){.workspace{grid-template-columns:minmax(0,1fr) 338px;gap:44px}.intro{padding-top:46px}.control-section{padding:25px 0}}
@media(max-width:1000px){main{padding:0 28px}.site-header{padding:0 28px}.workspace{grid-template-columns:minmax(0,1fr) 290px;gap:25px}h1{font-size:32px}.intro-note{display:none}.header-right{gap:18px}.local-badge{font-size:11px}.stage-top,.stage-bottom{left:18px;right:18px}.stage-top{top:18px}.local-note{flex-wrap:wrap}.offline-info{margin-left:34px;max-width:none;width:100%}}
@media(max-width:760px){main{padding:0 20px}.site-header{min-height:74px;padding:0 20px;gap:16px}.brand{font-size:29px}.brand-mark i{height:10px;width:6px}.tool-name{font-size:12px;padding-left:15px}.header-right .local-badge{display:none}.back-link{font-size:11px}.intro{padding:27px 0 22px}.eyebrow{font-size:9px;letter-spacing:1.4px}h1{font-size:30px}.workspace{display:flex;flex-direction:column;gap:18px}.preview-section{position:static;width:100%}.controls{width:100%}.stage-top,.stage-bottom{font-size:10px}.stage-label{letter-spacing:1.4px}.stage-bottom{bottom:14px}.stage-top{top:15px}.preview-caption{font-size:11px;padding:4px 0}.local-note{padding:14px 0;flex-wrap:nowrap;font-size:11px;gap:9px}.offline-info{margin-left:auto;width:auto;max-width:125px;font-size:10px}.local-note>span{font-size:18px}.control-section{padding:22px 0}.import-button{min-height:110px}.import-button small{font-size:12px}.field-hint{font-size:12px}.background-options button{min-height:46px}.check-label{font-size:13px;min-height:40px}select{font-size:16px;min-height:44px}input[type=range]{height:28px}.thumbnails{grid-template-columns:repeat(6,1fr);max-height:220px}.thumbnail button{min-width:30px;min-height:30px}.tool-footer{margin-top:28px;font-size:10px;line-height:1.9}.tool-footer>div{gap:18px}.stage canvas{touch-action:pan-y}.export-button{min-height:52px}.text-button{min-height:44px}}
@media(max-width:360px){main{padding:0 14px}.site-header{padding:0 14px;gap:12px}.tool-name{padding-left:12px;font-size:11px}.back-link{font-size:10px}h1{font-size:26px}.local-note{flex-wrap:wrap}.offline-info{margin-left:26px;max-width:none;width:100%}.stage-top,.stage-bottom{left:12px;right:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.tool-footer>div{flex-wrap:wrap}
.result-share{width:100%;margin-top:10px;min-height:44px;border:1px solid var(--line);border-radius:3px;font-size:12px}
.motion-switch{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px;padding:10px 12px;border:1px solid #cbd2bf;border-radius:5px;background:#e9eddf;font-size:13px;font-weight:500;cursor:pointer;touch-action:manipulation}.motion-switch>input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}.switch-controls{display:flex;align-items:center;gap:10px;flex-shrink:0;font-size:12px;font-weight:400}.switch-track{display:block;width:46px;height:26px;padding:3px;border-radius:20px;background:#afb5a7;transition:background .18s}.switch-track>span{display:block;width:20px;height:20px;border-radius:50%;background:#fffdf8;box-shadow:0 1px 3px #0002;transition:transform .18s}.switch-on{display:none}.switch-off{color:#5f6859}.motion-switch input:checked~.switch-controls .switch-track{background:var(--accent)}.motion-switch input:checked~.switch-controls .switch-track>span{transform:translateX(20px)}.motion-switch input:checked~.switch-controls .switch-on{display:inline}.motion-switch input:checked~.switch-controls .switch-off{display:none}.motion-switch input:focus-visible~.switch-controls .switch-track{outline:2px solid #a95f3d;outline-offset:4px}.motion-switch input:disabled{cursor:default}.motion-switch input:disabled~.switch-controls{opacity:.45}.motion-switch+.field-hint{margin:6px 0 14px}
.import-limits summary,#import-issues summary{font-size:12px;line-height:1.6;min-height:44px;padding:12px 0}.import-limits p{margin-top:0}#import-current{overflow-wrap:anywhere}#import-issue-list{margin:0;padding:0;list-style:none;max-height:240px;overflow:auto;font-size:12px;line-height:1.7}#import-issue-list li{padding:10px 0;border-top:1px solid var(--line);overflow-wrap:anywhere}#import-issue-list strong,#import-issue-list span{display:block}#import-issue-list strong{font-weight:500}#import-issue-list span{color:var(--muted)}#import-progress-text{flex:1;min-width:0}#cancel-import{margin-left:12px;flex-shrink:0}

/* Crawlable instructions below the interactive workspace. */
.sphere-guide{margin:48px auto 0;border-top:1px solid #cbd0c2;padding:28px 0 12px;max-width:900px;font-size:15px;line-height:1.9}.sphere-guide h2{font-family:serif;font-weight:400;font-size:28px}.sphere-guide ol{padding-left:24px}.sphere-guide li{margin-bottom:12px}.sphere-guide details{border-top:1px solid #d8dbd0;padding:14px 0}.sphere-guide summary{cursor:pointer;min-height:32px}.sphere-guide a{color:inherit;text-underline-offset:5px}