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button.active{background:var(--qb-accent);color:#fff}.qb-asset-grid{flex:1;min-height:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;overflow-y:auto;align-content:start;-webkit-overflow-scrolling:touch}.qb-asset-card{position:relative;aspect-ratio:1;border-radius:6px;overflow:hidden;background:#1a1a1a;cursor:pointer}.qb-asset-card img{width:100%;height:100%;object-fit:cover;display:block}.qb-asset-download{position:absolute;top:4px;right:4px;width:24px;height:24px;min-height:24px;padding:0;border-radius:4px;background:#0000008c;font-size:12px}.qb-source-tabs{flex:0 0 auto;display:flex;border-top:1px solid var(--qb-line)}.qb-source-tabs button{flex:1;min-height:36px;background:transparent;border-radius:0;font-size:12px;color:var(--qb-muted)}.qb-source-tabs button.active{color:var(--qb-accent);background:#3d8bfd1a}.qb-layers-wrap{flex:1;min-height:0;overflow:hidden}.qb-layers-wrap .panel-content{padding:12px;height:100%}.qb-layers-wrap h2{font-size:14px;margin-bottom:8px}.qb-canvas-zone{flex:1;min-width:0;min-height:0;position:relative;display:flex;background:var(--qb-canvas-bg)}.quick-build .canvas-shell{flex:1;padding:12px 56px 12px 12px;background:transparent}.quick-build .canvas-foot{display:none}.quick-build .canvas-frame{box-shadow:0 0 0 1px #ffffff1f;border-radius:4px}.qb-canvas-toolbar{position:absolute;top:12px;left:50%;transform:translate(-50%);z-index:5;display:flex;align-items:flex-end;gap:2px;max-width:calc(100% - 120px);padding:6px 10px;border-radius:8px;background:#1e1e1eeb;border:1px solid var(--qb-line);box-shadow:0 8px 24px #00000059;overflow-x:auto;scrollbar-width:none}.qb-canvas-toolbar::-webkit-scrollbar{display:none}.qb-canvas-tool{flex:0 0 auto;flex-direction:column;gap:2px;min-width:44px;min-height:auto;padding:4px 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14px);top:50%;transform:translateY(-50%);z-index:20;display:flex;flex-direction:column;gap:12px;padding:16px 18px;background:#3a3a3afa;border:1px solid rgba(255,255,255,.1);border-radius:14px;box-shadow:0 10px 36px #00000073}.qb-complete-menu:after{content:"";position:absolute;right:-7px;top:50%;transform:translateY(-50%);width:0;height:0;border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:8px solid rgba(58,58,58,.98)}.qb-complete-menu button{min-width:148px;padding:13px 22px;border:none;border-radius:999px;background:linear-gradient(90deg,#f0a56e,#d8a8f0 55%,#b8a0f5);color:#fff;font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;cursor:pointer;box-shadow:0 4px 14px #00000038;transition:transform .15s ease,filter .15s ease}.qb-complete-menu button:hover{filter:brightness(1.06);transform:translateY(-1px)}.qb-complete-menu button:active{transform:translateY(0)}.qb-modal-backdrop{position:fixed;inset:0;z-index:100;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:24px}.qb-modal-card{width:min(420px,100%);max-height:min(85vh,640px);overflow:auto;background:var(--qb-panel);border:1px solid var(--qb-line);border-radius:12px;padding:16px}.qb-modal-card header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.qb-modal-card header button{width:32px;height:32px;padding:0;background:transparent;font-size:20px}.qb-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:200;padding:10px 18px;border-radius:8px;background:#000000d1;font-size:13px;pointer-events:none}@media(max-width:900px){.qb-left-shell{flex-basis:280px;min-width:260px}.qb-accordion{display:none}.qb-canvas-toolbar{max-width:calc(100% - 80px)}.qb-perspective-bar{flex-direction:column;align-items:stretch;bottom:12px;padding:12px}.qb-perspective-hint{text-align:center;white-space:normal}.qb-perspective-actions{justify-content:stretch}.qb-perspective-btn{flex:1}}.quick-build.app-perspective .qb-right-rail{display:none}.qb-perspective-bar{position:absolute;left:50%;bottom:16px;transform:translate(-50%);z-index:8;display:flex;align-items:center;gap:14px;max-width:calc(100% - 24px);padding:10px 14px;border-radius:10px;background:#141414f0;border:1px solid rgba(255,255,255,.12);box-shadow:0 8px 28px #00000073}.qb-perspective-hint{color:#ffffffc7;font-size:13px;white-space:nowrap}.qb-perspective-actions{display:flex;align-items:center;gap:8px}.qb-perspective-btn{min-height:36px;padding:0 16px;border-radius:8px;border:1px solid rgba(255,255,255,.18);background:#ffffff0f;color:#fff;font-size:13px;cursor:pointer}.qb-perspective-btn.primary{border-color:#409eff;background:#409eff;color:#fff;font-weight:600}.qb-perspective-btn:hover{filter:brightness(1.08)}.quick-build.app-perspective .canvas-shell{padding:8px}