:root{--brand:#2563eb;--brand-hover:#1d4ed8;--brand-light:#dbeafe;--bg:#f1f5f9;--panel:#fff;--border:#e2e8f0;--text:#0f172a;--secondary:#334155;--muted:#64748b;--placeholder:#94a3b8;--danger:#dc2626;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);font-size:13px}
*{box-sizing:border-box}body{margin:0;height:100vh;height:100dvh;display:flex;flex-direction:column;background:var(--bg);overflow:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.35;cursor:default}a{color:inherit;text-decoration:none}h1,h2,p{margin:0}h1,h2{font-size:14px;font-weight:600}[hidden]{display:none!important}.icon{width:18px;height:18px;display:block;flex-shrink:0}.toolbar{min-height:76px;padding:12px 22px;display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);background:var(--panel);z-index:10}.brand{display:flex;align-items:center;gap:10px;margin-right:18px;font-size:19px;font-weight:700;letter-spacing:-.6px}.brand-symbol{display:grid;place-items:center;width:36px;height:36px;background:var(--brand);border-radius:10px;color:white}.brand-symbol .icon{width:22px;height:22px}.brand small{display:block;font-size:10px;font-weight:400;letter-spacing:1.5px;color:var(--muted);margin-top:3px}.toolbar-divider{height:24px;width:1px;background:var(--border);margin:0 8px}.toolbar-group{display:flex;gap:3px;background:#f8fafc;border:1px solid #edf1f5;padding:4px;border-radius:24px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:7px;border:1px solid var(--border);border-radius:24px;padding:8px 14px;color:var(--secondary);background:var(--panel);font-weight:500;font-size:13px;white-space:nowrap;transition:background .1s,border-color .1s,box-shadow .1s}.btn:hover:not(:disabled){background:#f8fafc;border-color:#cbd5e1}.btn-primary{background:var(--brand);border-color:var(--brand);color:white;box-shadow:0 2px 4px #2563eb18}.btn-primary:hover:not(:disabled){background:var(--brand-hover);border-color:var(--brand-hover)}.btn-sm{padding:6px 11px;font-size:12px}.btn .icon{width:15px;height:15px}.btn-icon{width:34px;height:34px;padding:7px;border-color:transparent;border-radius:9px}.presets .btn{background:transparent;border-color:transparent}.presets .btn.active{background:white;box-shadow:0 1px 4px #0f172a10;color:var(--brand);border-color:var(--border)}.toolbar-end{margin-left:auto;display:flex;gap:9px}.save-state{font-size:11px;color:var(--muted);margin-left:10px}.workspace{display:flex;flex:1;min-height:0}.sidebar{width:280px;flex-shrink:0;border-right:1px solid var(--border);background:white;display:flex;flex-direction:column;min-height:0}.panel-heading{padding:22px 20px 10px;display:flex;align-items:center;justify-content:space-between}.badge{background:#f1f5f9;color:var(--muted);font-size:11px;padding:3px 8px;border-radius:6px}.panel-description{font-size:12px;color:var(--muted);padding:0 20px 16px}.search-box{margin:0 16px 18px;display:flex;align-items:center;gap:9px;background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:8px 10px;color:var(--placeholder)}.search-box .icon{width:16px;height:16px}.search-box input{width:100%;padding:0;border:none;outline:none;background:transparent;font-size:12px}.library-scroll{overflow:auto;flex:1;padding:0 16px 20px}.section-label{font-size:11px;font-weight:600;letter-spacing:.5px;color:var(--muted);display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.section-label span{font-weight:400;color:var(--placeholder);font-size:10px}.component-list{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}.component-item{position:relative;display:flex;align-items:center;gap:12px;padding:11px 12px;background:white;border:1px solid var(--border);border-radius:12px;text-align:left;cursor:grab;transition:transform .1s,box-shadow .1s,border-color .1s;width:100%;min-width:0}.component-item:hover{transform:translateY(-1px);border-color:#bfdbfe;box-shadow:0 4px 8px #0f172a08}.component-item:active{cursor:grabbing}.component-symbol{width:34px;height:34px;background:#f1f5f9;border-radius:8px;display:grid;place-items:center;color:#475569;flex-shrink:0}.component-symbol .icon{width:19px;height:19px}.component-item[data-comp-id="lib-btn"] .component-symbol{background:#eff6ff;color:var(--brand)}.component-item[data-comp-id="lib-svg-star"] .component-symbol{background:#fffbeb;color:#f59e0b}.component-name{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.drag-dots{margin-left:auto;color:#cbd5e1;font-size:18px;letter-spacing:-2px}.custom-empty{font-size:11px;line-height:1.8;color:var(--placeholder);padding:0 2px 16px}.creation-actions{display:flex;flex-direction:column;gap:8px}.creation-actions .btn{justify-content:flex-start;border-style:dashed;border-radius:8px;font-size:12px;padding:10px 12px;color:var(--muted)}.library-footer{border-top:1px solid var(--border);padding:16px}.lib-actions{display:flex;gap:6px}.lib-actions .btn{flex:1;padding:7px 8px;border-radius:8px}.library-footer small{display:block;font-size:10px;color:var(--placeholder);margin-top:12px}.canvas-area{display:flex;flex-direction:column;flex:1;min-width:0;background:#f1f5f9}.canvas-topbar{height:50px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 24px;color:var(--muted);font-size:11px;flex-shrink:0}.canvas-breadcrumb{display:flex;align-items:center;gap:9px;white-space:nowrap}.canvas-breadcrumb .icon{width:14px;height:14px}.canvas-breadcrumb strong{font-weight:500;color:#475569}.canvas-breadcrumb>span:not(:first-child){color:#cbd5e1}.canvas-dimensions{font-variant-numeric:tabular-nums;color:var(--placeholder);white-space:nowrap}.canvas-viewport{flex:1;min-height:0;overflow:auto;padding:22px 40px 40px;background-image:radial-gradient(#cbd5e177 .7px,transparent .7px);background-size:16px 16px}.canvas-stage{position:relative;margin:auto;flex-shrink:0}.canvas-scaler{transform-origin:top left;position:absolute;left:0;top:0}.canvas-caption{height:28px;display:flex;justify-content:space-between;align-items:flex-start;font-size:11px;color:var(--placeholder);padding:0 3px;user-select:none}.canvas-caption>span:first-child{color:var(--muted);font-weight:500}.canvas-container{border-radius:16px;box-shadow:0 20px 35px -8px #0f172a20,0 4px 12px #0f172a08;width:375px;height:667px;outline:none}.canvas-container.drag-over{outline:2px solid var(--brand);outline-offset:3px;background:#eff6ff}.empty-canvas-hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;pointer-events:none;text-align:center}.empty-icon{width:62px;height:62px;border:1px solid var(--border);border-radius:16px;display:grid;place-items:center;background:#f8fafc;margin-bottom:4px;color:var(--placeholder)}.empty-icon .icon{width:28px;height:28px}.empty-canvas-hint strong{font-size:14px;font-weight:500;color:#475569}.empty-canvas-hint>span{font-size:12px;line-height:1.8;color:var(--placeholder)}.empty-chip{padding:3px 12px;border-radius:20px;background:#f8fafc;border:1px solid #f1f5f9;font-size:10px!important;margin-top:8px}.editor-item{cursor:move;user-select:none;touch-action:none;position:absolute;outline:1px solid transparent;outline-offset:2px}.editor-item>.prototype-item{inset:0!important;width:100%!important;height:100%!important;pointer-events:none}.editor-item.selected{outline:2px solid var(--brand);box-shadow:0 0 0 4px #3b82f61a}.editor-item:hover:not(.selected){outline-color:#93c5fd}.item-label{display:none;position:absolute;bottom:-24px;right:-2px;padding:3px 7px;border-radius:4px;background:var(--brand);color:white;font-size:10px;white-space:nowrap;pointer-events:none;max-width:200px;overflow:hidden;text-overflow:ellipsis;z-index:2}.editor-item:hover .item-label,.editor-item.selected .item-label{display:block}.selection-dot{position:absolute;width:6px;height:6px;background:white;border:1px solid var(--brand);display:none}.selected .selection-dot{display:block}.selection-dot.a{left:-4px;top:-4px}.selection-dot.b{right:-4px;top:-4px}.selection-dot.c{left:-4px;bottom:-4px}.selection-dot.d{right:-4px;bottom:-4px}.canvas-bottom-controls{height:48px;display:flex;align-items:center;gap:10px;padding:0 24px;flex-shrink:0;border-top:1px solid #e2e8f080}.keyboard-hint{font-size:10px;color:var(--placeholder);margin-right:auto}kbd{font-family:inherit;border:1px solid #cbd5e1;border-radius:3px;padding:0 3px;font-size:10px}.zoom-control{font-size:11px;display:flex;gap:9px;align-items:center;color:var(--muted)}.zoom-control select{background:white;border:1px solid var(--border);border-radius:8px;padding:5px;font-size:11px;color:var(--secondary)}.properties{width:260px;flex-shrink:0;background:white;border-left:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.heading-icon{color:var(--placeholder)}.properties-scroll{overflow:auto;flex:1}.prop-section{padding:20px;border-bottom:1px solid #f1f5f9}.selection-empty{display:flex;flex-direction:column;align-items:center;padding:24px 0;gap:12px;color:var(--placeholder);text-align:center}.selection-empty .icon{width:28px;height:28px;color:#cbd5e1}.selection-empty strong{font-size:12px;font-weight:400;color:var(--muted)}.selection-empty p{font-size:11px;line-height:1.8}.field{display:block;position:relative;font-size:11px;color:var(--muted);margin-bottom:12px}.field input,.field textarea,.field select{display:block;width:100%;margin-top:6px;border:1px solid var(--border);border-radius:8px;padding:9px 10px;background:#fff;color:var(--secondary);outline:none;font-size:12px;transition:box-shadow .1s,border-color .1s}.field textarea{font-family:ui-monospace,SFMono-Regular,monospace;resize:vertical;line-height:1.6}.field input:focus,.field textarea:focus,.field select:focus,.search-box:focus-within{border-color:#93c5fd;box-shadow:0 0 0 2px #3b82f622}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.unit{float:right;font-size:10px;color:var(--placeholder)}.field-help{font-size:10px;color:var(--placeholder);line-height:1.7;margin:0 0 12px}.apply-button{width:100%;border-radius:8px;margin:4px 0 10px;font-size:12px}.prop-actions{display:flex;gap:8px}.prop-actions .btn{width:50%;border-radius:8px}.btn-danger{color:var(--danger)}.btn-danger:hover:not(:disabled){background:#fef2f2;border-color:#fecaca}.layer-list{display:flex;flex-direction:column;gap:4px}.layer-item{display:flex;align-items:center;gap:8px;padding:8px;border-radius:6px;border:0;background:transparent;font-size:11px;text-align:left;min-width:0;color:var(--muted)}.layer-item span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.layer-item .icon{width:14px;height:14px}.layer-item.selected{background:#eff6ff;color:var(--brand)}.layer-actions{display:flex;gap:6px;margin-top:12px}.properties-footer{padding:16px 20px;font-size:10px;color:var(--placeholder);border-top:1px solid var(--border);display:flex;gap:7px;align-items:center}.local-dot{display:inline-block;width:6px;height:6px;flex-shrink:0;border-radius:50%;background:#16a34a}.status-bar{height:30px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:0 20px;background:white;border-top:1px solid var(--border);font-size:10px;color:var(--muted);flex-shrink:0}.status-bar>span:first-child{display:flex;gap:7px;align-items:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-bar>span:last-child{white-space:nowrap}dialog{width:min(520px,calc(100vw - 32px));border:1px solid var(--border);border-radius:16px;padding:24px;box-shadow:0 24px 80px #0f172a30;max-height:90dvh;overflow:auto;color:var(--text)}dialog::backdrop{background:#0f172a50;backdrop-filter:blur(3px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}.dialog-description{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:20px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.form-error{color:var(--danger);font-size:12px;min-height:16px}.preview-dialog{width:min(1200px,calc(100vw - 40px));padding:16px;overflow:hidden}.preview-dialog small{font-size:11px;font-weight:400;color:var(--muted);margin-left:10px}.preview-dialog iframe{width:100%;height:70dvh;border:1px solid var(--border);border-radius:8px;background:#f1f5f9}.toast{position:fixed;bottom:48px;left:50%;transform:translateX(-50%);max-width:calc(100vw - 32px);padding:12px 20px;border-radius:10px;background:#0f172a;color:white;font-size:12px;box-shadow:0 8px 24px #0f172a22;z-index:100;line-height:1.6}.toast.error{background:#991b1b}.noscript{position:fixed;inset:0;background:white;display:grid;place-items:center;z-index:200}.mobile-tabs{display:none}button:focus-visible,a:focus-visible,select:focus-visible,#canvas:focus-visible{outline:2px solid var(--brand);outline-offset:3px}.component-item:focus-visible{border-color:var(--brand)}
@media(max-width:1199px){.sidebar{width:220px}.properties{width:220px}.toolbar{padding:10px 14px;gap:4px}.brand{margin-right:8px}.save-state{display:none}.toolbar-divider{margin:0 4px}.panel-heading{padding-left:16px;padding-right:16px}.prop-section{padding:16px}.canvas-viewport{padding-left:24px;padding-right:24px}.keyboard-hint{display:none}.zoom-control{margin-left:auto}.lib-actions{gap:4px}.lib-actions .btn{font-size:10px;padding:7px 5px;gap:4px}}
@media(max-width:899px){.toolbar{flex-wrap:wrap;min-height:68px}.brand{font-size:17px}.brand small{display:none}.toolbar-divider{display:none}.brand-symbol{width:32px;height:32px}.toolbar-end .btn{font-size:12px;padding:7px 10px}.toolbar-group{margin-left:auto}.toolbar-end{margin-left:0}.mobile-tabs{display:flex;padding:8px 12px;gap:8px;background:white;border-bottom:1px solid var(--border)}.workspace{position:relative}.sidebar,.properties{display:none;position:absolute;inset:0 auto 0 0;width:260px;z-index:8;box-shadow:8px 0 24px #0f172a15}.properties{inset:0 0 0 auto;box-shadow:-8px 0 24px #0f172a15}.sidebar.open,.properties.open{display:flex}.canvas-topbar{padding:0 16px}.canvas-bottom-controls{padding:0 16px}.canvas-viewport{padding:16px 20px 30px}.canvas-dimensions{display:none}}
@media(max-width:520px){.toolbar{gap:4px;padding:10px}.brand{margin-right:auto}.toolbar-group{order:3;margin-left:0}.toolbar-end{margin-left:auto}.brand-symbol{width:28px;height:28px}.toolbar-end .btn .icon{display:none}.toolbar #undoBtn,.toolbar #redoBtn{order:4}.toolbar #rotateBtn{order:3}.canvas-breadcrumb{font-size:10px}.status-bar{padding:0 10px;font-size:9px}.canvas-caption{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* 设备外框与组件分类 */
.device-screen>.canvas-container{border-radius:0;box-shadow:none}
.device-shell.phone-none,.device-shell.tablet-none,.device-shell.pc-none{box-shadow:0 20px 35px -8px #0f172a20}
.device-shell .device-decoration{contain:layout paint}
.vector-list{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.vector-list .component-item{padding:9px 7px;gap:7px;border-radius:9px}
.vector-list .component-symbol{width:26px;height:26px;background:#eff6ff}
.vector-list .component-symbol svg{width:20px;height:20px}
.vector-list .component-name{font-size:11px}
.vector-list .drag-dots{display:none}
.checkbox-field{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--muted);margin:8px 0 14px}
.checkbox-field input{accent-color:var(--brand)}

/* 编辑辅助线与对齐工具 */
.canvas-caption{position:absolute;top:0;gap:8px;padding:0;line-height:18px}
.canvas-caption>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.canvas-caption>span:first-child{flex:1}
.canvas-caption>span:last-child{flex-shrink:0;max-width:45%}
.canvas-viewport{background-image:none}
.canvas-view-controls{display:flex;align-items:center;gap:14px;white-space:nowrap}
.canvas-view-controls label{display:flex;align-items:center;gap:4px;cursor:pointer;font-size:11px}
.canvas-view-controls input{margin:0;accent-color:var(--brand)}
.canvas-ruler{position:absolute;pointer-events:none;overflow:hidden;background:#f8fafc;color:#64748b;border:1px solid #cbd5e1;z-index:4}
.canvas-ruler.horizontal{height:22px;border-bottom-color:#94a3b8}
.canvas-ruler.vertical{width:22px;border-right-color:#94a3b8}
.canvas-ruler svg{display:block;overflow:hidden}
.canvas-ruler path{stroke:#94a3b8;stroke-width:1;fill:none}
.canvas-ruler text{font:9px system-ui,sans-serif;fill:#475569}
.canvas-grid{position:absolute;inset:0;pointer-events:none;z-index:2;background-image:linear-gradient(to right,#2563eb25 1px,transparent 1px),linear-gradient(to bottom,#2563eb25 1px,transparent 1px);background-size:var(--grid-size) var(--grid-size)}
.alignment-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.alignment-actions .btn{font-size:10px;border-radius:6px;padding:7px 2px;min-width:0}
.alignment-actions .align-center{grid-column:1/-1}
.alignment-help{margin:10px 0 0}
@media(max-width:520px){.canvas-topbar{gap:8px;flex-wrap:wrap;height:auto;min-height:50px;padding-top:8px;padding-bottom:8px}.canvas-view-controls{gap:10px}}

/* 自定义组件预览 */
.custom-component{display:flex;flex-direction:column;align-items:stretch;gap:10px;padding:10px}
.component-preview{width:100%;height:116px;border:1px solid var(--border);border-radius:8px;background-color:#f8fafc;background-image:linear-gradient(45deg,#e2e8f066 25%,transparent 25%,transparent 75%,#e2e8f066 75%),linear-gradient(45deg,#e2e8f066 25%,transparent 25%,transparent 75%,#e2e8f066 75%);background-size:16px 16px;background-position:0 0,8px 8px;overflow:hidden;pointer-events:none}
.component-card-meta{display:flex;align-items:center;gap:8px;min-width:0}
.component-dialog-preview{height:220px;margin-bottom:12px}
.canvas-viewport{touch-action:pan-x pan-y}
.canvas-viewport.can-pan{cursor:grab}
.canvas-viewport.pan-ready,.canvas-viewport.pan-ready *{cursor:grab!important}
.canvas-viewport.is-panning,.canvas-viewport.is-panning *{cursor:grabbing!important;user-select:none}
.keyboard-hint{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 可放置区域及拖动吸附参考线，仅用于编辑 */
.canvas-safe-area{position:absolute;pointer-events:none;z-index:2;border:1px dashed #f59e0b;box-shadow:0 0 0 3000px #f59e0b12}
.canvas-snap-guides{position:absolute;inset:0;z-index:4;pointer-events:none}
.snap-guide{position:absolute;display:block;background:#db2777}
.snap-guide.vertical{top:0;bottom:0;width:1px}
.snap-guide.horizontal{left:0;right:0;height:1px}

/* 工程操作在窄屏换行，避免挤出工具栏。 */
.toolbar-end{flex-wrap:wrap}
@media(min-width:900px) and (max-width:1399px){.toolbar{flex-wrap:wrap}.toolbar-end{margin-left:auto}.save-state{display:none}}

/* AI 对话、版本与合并 */
.toolbar{flex-wrap:wrap}.toolbar-end{flex-wrap:wrap}
.ai-panel{width:320px;flex-shrink:0;display:flex;flex-direction:column;background:white;border-left:1px solid var(--border);min-height:0}
.ai-messages{flex:1;overflow:auto;padding:0 16px 16px;display:flex;flex-direction:column;gap:12px;min-height:80px}
.ai-message{background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:12px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7;font-size:12px}
.ai-message.user{background:#eff6ff;border-color:#dbeafe}.ai-message strong{display:block;font-size:10px;color:var(--muted);margin-bottom:5px}.ai-message.system{color:var(--muted)}
.ai-composer{padding:16px;border-top:1px solid var(--border)}.ai-composer textarea{font-family:inherit}.ai-composer-actions{display:flex;justify-content:flex-end;gap:8px}
.ai-pending{margin:0 16px 16px;padding:12px;background:#fffbeb;border:1px solid #fde68a;border-radius:10px;font-size:12px;line-height:1.8}.ai-pending p{margin:6px 0;overflow-wrap:anywhere}.ai-pending .btn{margin:4px 4px 0 0}
.versions-dialog,.merge-dialog{width:min(850px,calc(100vw - 32px))}.version-tools{display:flex;gap:8px;margin-bottom:16px}.versions-list{display:flex;flex-direction:column;gap:8px}.version-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--border);border-radius:10px;padding:12px}.version-row.current{border-color:#93c5fd;background:#eff6ff}.version-row strong{display:block;font-size:12px;overflow-wrap:anywhere}.version-row small{display:block;color:var(--muted);font-size:10px;margin-top:6px;line-height:1.8}.version-row .btn{flex-shrink:0}
.merge-conflict{padding:12px;border:1px solid #fde68a;background:#fffbeb;border-radius:8px;margin-bottom:12px}.merge-values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:8px 0}.merge-values strong{font-size:11px}.merge-values pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:140px;overflow:auto;background:white;padding:8px;border-radius:6px;font-size:11px;margin:6px 0}.merge-conflict select{padding:7px;border:1px solid var(--border);border-radius:6px;background:white;width:100%}
#mergePreview{width:100%;height:300px;border:1px solid var(--border);border-radius:8px;background:#f1f5f9}
@media(max-width:1499px){.ai-panel{position:absolute;right:0;top:0;bottom:0;width:340px;max-width:100%;z-index:9;box-shadow:-8px 0 24px #0f172a15}.workspace{position:relative}}
@media(max-width:520px){.toolbar-end{gap:5px}.ai-panel{width:100%}.merge-values{grid-template-columns:1fr}.merge-values pre{max-height:90px}.version-row{align-items:flex-start}}

/* 页面管理在画布上方，窄屏仍可直接切换与添加。 */
.pages-toolbar{flex-shrink:0;padding:8px 16px 10px;border-block:1px solid #e2e8f0;background:#ffffffb8;min-width:0}
.project-controls{display:flex;align-items:center;gap:6px;min-width:0}.project-controls select{max-width:180px;min-width:90px;border:1px solid var(--border);border-radius:8px;padding:7px;background:white;color:var(--secondary);font-size:12px}.ai-composer{overflow:auto;max-height:65%;flex-shrink:0}.ai-rules{font-size:11px;color:var(--muted);margin-bottom:10px}.ai-rules summary{cursor:pointer;margin-bottom:8px}.ai-pending p{overflow-wrap:anywhere}
#generationDialog{overflow:auto}#generationPreview{height:min(50dvh,620px)}#generationDialog .dialog-actions{flex-wrap:wrap}
#mcpDialog{width:min(640px,calc(100vw - 32px))}#mcpSessionId{overflow-wrap:anywhere;margin-top:12px}#mcpConfig{white-space:pre;overflow:auto}
#engineeringDialog{width:min(640px,calc(100vw - 32px))}.engineering-section{border-top:1px solid var(--border);padding:16px 0}.engineering-section h3{font-size:13px;margin-bottom:12px}.engineering-section details{margin-bottom:10px;font-size:12px}.engineering-manifest{max-height:180px;overflow:auto;background:#f8fafc;padding:12px;border-radius:8px;font-size:11px;white-space:pre-wrap;overflow-wrap:anywhere}.engineering-groups{display:grid;gap:8px;margin-bottom:12px}.engineering-section input[type=color]{height:38px;padding:4px}
@media(max-width:899px){.project-controls{order:2;width:100%}.project-controls select{flex:1;max-width:none}}
.page-list{display:flex;gap:6px;overflow:auto;max-height:64px;padding-bottom:4px}
.page-tab-entry{display:flex;align-items:center;flex-shrink:0;max-width:220px;border:1px solid var(--border);border-radius:8px;background:white;overflow:hidden}
.page-tab-entry:has(.active){background:#eff6ff;border-color:#93c5fd}
.page-tab{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:0;background:transparent;color:var(--muted);padding:8px 10px;font-size:11px;cursor:pointer}
.page-tab.active{color:var(--brand)}
.page-tab-delete{flex-shrink:0;display:grid;place-items:center;width:24px;height:24px;margin-right:4px;border:0;border-radius:5px;background:transparent;color:var(--muted);font-size:17px;line-height:1}
.page-tab-delete:hover:not(:disabled){background:#fee2e2;color:var(--danger)}
.page-tab:focus-visible,.page-tab-delete:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.page-tab-delete:disabled{opacity:.25}
.page-tools{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:6px}.page-tools>span{font-size:10px;color:var(--muted);margin-right:auto}.page-tools .btn{font-size:11px;padding:5px 8px}
@media(max-width:599px){.pages-toolbar{padding:8px}.page-tools>span{width:100%}.canvas-topbar{gap:6px}.canvas-breadcrumb{overflow:hidden;text-overflow:ellipsis;min-width:0}}

/* 组件分类标签与属性编辑 */
.library-tabs{display:flex;gap:3px;padding:0 12px 12px;flex-shrink:0}
.library-tabs [role=tab]{flex:1;min-width:0;border:1px solid transparent;border-radius:8px;padding:8px 3px;background:#f8fafc;color:var(--muted);font-size:11px;white-space:nowrap}
.library-tabs [aria-selected=true]{background:#eff6ff;border-color:#bfdbfe;color:var(--brand);font-weight:600}
.library-tabs span{margin-left:4px;font-size:9px;opacity:.7}
.property-group{margin:0 0 14px;padding:12px 10px 0;border:1px solid var(--border);border-radius:8px;min-width:0}
.property-group legend{font-size:11px;font-weight:600;color:var(--secondary);padding:0 5px}
.spacing-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}
.spacing-grid .field input{padding:8px 4px;text-align:center}
.color-field{display:flex;align-items:center;gap:6px;margin-top:6px}
.color-field input{margin-top:0!important;min-width:0}
.color-field input[type=color]{flex:0 0 32px;width:32px;height:34px;padding:3px;cursor:pointer}
.property-image-preview{display:block;width:100%;height:96px;object-fit:contain;border-radius:6px;background:#f1f5f9;margin-bottom:12px}
.property-group textarea{font-family:inherit;resize:vertical}
.property-group input[type=file]{font-size:10px;padding:6px;max-width:100%}

/* 所有编辑板块使用同一套收起入口，独立保留各自状态。 */
.section-toggle{display:flex;align-items:center;gap:7px;width:100%;min-height:28px;border:0;border-radius:5px;padding:3px 0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}
.section-toggle::before,.panel-toggle::before{content:"";width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);flex-shrink:0;margin:0 4px 4px 2px}
.section-toggle[aria-expanded=false]::before{transform:rotate(-45deg);margin-bottom:0}
.section-toggle:hover,.panel-toggle:hover{color:var(--brand);background:#eff6ff}
.section-toggle>span{margin-left:auto}
.collapsible-section>.section-label{margin-bottom:8px}
.section-collapsed>.section-label{margin-bottom:0}
.property-group legend{max-width:100%}
.property-group .section-toggle{width:auto}
.property-group.section-collapsed{padding-bottom:6px}
.creation-section{margin-bottom:16px}
.panel-toggle{display:flex;align-items:center;justify-content:center;gap:8px;min-width:28px;min-height:28px;border:0;border-radius:6px;background:transparent;color:var(--muted);padding:6px;cursor:pointer}
.panel-toggle::before{transform:rotate(135deg);margin:0 0 0 4px}
.properties .panel-toggle::before,.ai-panel .panel-toggle::before{transform:rotate(-45deg);margin:0 4px 0 0}
.panel-toggle-label{display:none}
.sidebar.panel-collapsed,.properties.panel-collapsed,.ai-panel.panel-collapsed{width:44px}
.panel-collapsed>:not(.panel-heading){display:none!important}
.panel-collapsed>.panel-heading{padding:12px 6px;justify-content:center}
.panel-collapsed>.panel-heading>:not(.panel-toggle){display:none}
.panel-collapsed .panel-toggle{flex-direction:column;gap:12px;padding:6px 3px}
.panel-collapsed .panel-toggle::before{transform:rotate(-45deg);margin:0 4px 0 0}
.properties.panel-collapsed .panel-toggle::before,.ai-panel.panel-collapsed .panel-toggle::before{transform:rotate(135deg);margin:0 0 0 4px}
.panel-collapsed .panel-toggle-label{display:block;writing-mode:vertical-rl;letter-spacing:3px;font-size:12px;line-height:18px}
.pages-toolbar>.section-label{margin-bottom:4px}
.pages-toolbar.section-collapsed>.section-label{margin-bottom:0}
.ai-history{display:flex;flex-direction:column;flex:1;min-height:0;padding-top:0}
.ai-history>.section-label{margin:0 16px 8px}
.ai-history>.collapse-content{display:flex;flex-direction:column;flex:1;min-height:0}
.ai-history.section-collapsed{flex:0 0 auto}
.ai-composer.section-collapsed{overflow:visible}
.visibility-targets{max-height:200px;overflow:auto;display:grid;gap:6px}.visibility-targets .checkbox-field{margin:0;overflow-wrap:anywhere}

/* 属性和设计记录各自滚动，图层入口始终保留。 */
.inspector-column{width:280px;flex-shrink:0;display:flex;flex-direction:column;min-height:0;background:white;border-left:1px solid var(--border)}
.inspector-column .properties{width:100%;flex:1;min-height:0;border-left:0}
.inspector-column .properties.panel-collapsed{width:100%;flex:0 0 auto}
.inspector-column .properties.panel-collapsed>.panel-heading{justify-content:space-between;padding:10px 16px}
.inspector-column .properties.panel-collapsed>.panel-heading>h2{display:block}
.inspector-column .properties.panel-collapsed .panel-toggle-label{display:none}
.panel-tabs{display:flex;gap:4px;padding:8px 12px;border-bottom:1px solid var(--border);flex-shrink:0;background:white}
.panel-tabs [role=tab]{flex:1;min-width:0;padding:9px 4px;border:1px solid transparent;border-radius:8px;background:#f8fafc;color:var(--muted);font-size:12px;white-space:nowrap}
.panel-tabs [aria-selected=true]{color:var(--brand);background:#eff6ff;border-color:#bfdbfe;font-weight:600}
.panel-tabs [role=tab]:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
.activity-panel{display:flex;flex-direction:column;flex:0 0 34%;min-height:180px;max-height:46%;border-top:1px solid var(--border)}
.activity-scroll{overflow:auto;min-height:0;flex:1;padding:12px}
.activity-scroll .prop-section{padding:0;border:0}
.activity-scroll .version-row{flex-direction:column;align-items:stretch;gap:8px;padding:10px}
.activity-scroll .version-row .btn{align-self:flex-start;font-size:10px;padding:5px 8px}
.activity-scroll .version-row strong{font-size:11px}
.activity-scroll .version-tools{gap:6px;flex-wrap:wrap;margin-bottom:10px}
.custom-library-tools{margin-bottom:12px}
.custom-library-tools .field{margin-bottom:8px}
.group-tools{display:flex;gap:6px}.group-tools .btn{flex:1;font-size:11px;border-radius:7px}
.custom-entry{border:1px solid var(--border);border-radius:10px;overflow:hidden;min-width:0}
.custom-entry>.component-item{border:0;border-radius:0}
.custom-entry-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:5px 8px;background:#f8fafc;font-size:10px;color:var(--muted)}
.custom-entry-footer>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.custom-entry-footer .btn{font-size:10px;padding:3px 7px;border-radius:6px}
@media(min-width:900px) and (max-width:1199px){.inspector-column{width:250px}}
@media(max-width:899px){
  .inspector-column{display:none;position:absolute;inset:0 0 0 auto;width:290px;max-width:100%;z-index:8;box-shadow:-8px 0 24px #0f172a15}
  .inspector-column.open{display:flex}
  .inspector-column .properties{position:static;inset:auto;display:flex;box-shadow:none}
}

/* 顶部应用菜单 */
.toolbar{min-height:62px;flex-wrap:nowrap;gap:16px;padding:10px 20px}
.toolbar .brand{flex-shrink:0;margin-right:8px}
.app-menubar{display:flex;align-items:center;gap:2px;flex-shrink:0}
.menu-trigger{display:flex;align-items:center;gap:7px;border:0;border-radius:7px;padding:9px 12px;background:transparent;color:var(--secondary);font-size:13px;white-space:nowrap}
.menu-trigger::after{content:"";width:5px;height:5px;border-right:1px solid var(--muted);border-bottom:1px solid var(--muted);transform:rotate(45deg);margin-top:-3px}
.menu-trigger:hover,.menu-trigger[aria-expanded="true"]{background:#eff6ff;color:var(--brand)}
.menu-trigger[aria-expanded="true"]::after{border-color:var(--brand);transform:rotate(225deg);margin-top:3px}
.menu-dropdown{position:fixed;width:min(260px,calc(100vw - 24px));padding:6px;background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 36px #0f172a1a,0 2px 8px #0f172a08;z-index:30;overflow:auto}
.menu-dropdown button{display:flex;align-items:center;gap:10px;width:100%;min-height:38px;border:0;border-radius:6px;padding:9px 12px;background:transparent;color:var(--secondary);text-align:left;font-size:12px;white-space:nowrap}
.menu-dropdown button:hover:not(:disabled),.menu-dropdown button:focus-visible{background:#eff6ff;color:var(--brand);outline:none}
.menu-dropdown button .icon{width:15px;height:15px}
.menu-dropdown button[aria-checked="true"]{color:var(--brand);background:#eff6ff}
.menu-dropdown button[aria-checked="true"]::after{content:"✓";margin-left:auto}
.menu-shortcut{margin-left:auto;color:var(--muted);font-size:10px;white-space:nowrap}
.menu-label{padding:7px 12px 5px;font-size:10px;color:var(--muted)}
.menu-separator{height:1px;background:var(--border);margin:5px 6px}
.toolbar .project-controls{order:initial;width:auto;margin-left:8px;flex-shrink:1}
.toolbar .project-controls select{width:180px;min-width:90px;max-width:180px;padding:8px 10px;text-overflow:ellipsis}
.toolbar .toolbar-end{margin-left:auto;align-items:center;flex-wrap:nowrap;gap:16px}
.toolbar .save-state{margin:0;white-space:nowrap}
@media(max-width:1199px){.toolbar{gap:10px;padding-inline:14px}.toolbar .brand{margin-right:0}.toolbar .project-controls{margin-left:0}.menu-trigger{padding-inline:10px}}
@media(max-width:899px){.toolbar .toolbar-end{margin-left:auto}.toolbar .project-controls select{width:150px}.menu-trigger{padding-inline:8px}}
@media(max-width:599px){.toolbar{flex-wrap:wrap;gap:8px;padding:10px 12px}.toolbar .brand{margin-right:0;font-size:16px}.toolbar .project-controls{flex:1;min-width:0}.toolbar .project-controls select{width:100%;min-width:0;max-width:none}.toolbar .toolbar-end{gap:0}.toolbar .toolbar-end .btn{padding:7px 10px}.app-menubar{order:2;width:100%;gap:4px}.menu-trigger{padding:8px 12px}}

.language-control{display:flex;align-items:center;gap:6px;color:var(--muted);flex-shrink:0}
.language-control .icon{width:16px;height:16px}
.language-control select{max-width:118px;padding:7px 22px 7px 8px;border:1px solid var(--border);border-radius:8px;background:var(--surface,#fff);color:var(--text);font:inherit;font-size:12px;cursor:pointer}
html[lang=en] .menu-dropdown{min-width:250px}
html[lang=en] .library-tabs button{padding-inline:8px}
html[lang=en] .panel-tabs button{font-size:10px}
@media(max-width:599px){.toolbar .toolbar-end{gap:8px}.language-control .icon{display:none}.language-control select{max-width:106px;font-size:11px;padding-inline:6px}.toolbar .project-controls{order:3;flex-basis:100%}.canvas-topbar{gap:6px}.canvas-breadcrumb{min-width:0}.canvas-view-controls{flex-shrink:0}}