.sandbox-main{max-width:1720px;margin:auto;padding:26px 32px 18px}.sandbox-heading{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:22px}.sandbox-heading p{font-size:16px;color:#747e8b;margin-top:4px}.sketch-label{font-size:13px;color:#747384;border:1px solid #dddfea;border-radius:20px;padding:7px 13px;background:#fafaff;white-space:nowrap}.sandbox-layout{display:grid;grid-template-columns:minmax(0,1fr) 306px;gap:22px;align-items:start}.sandbox-workspace{min-width:0;border:1px solid #dfe2e7;border-radius:15px;overflow:hidden;background:white}.palette-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 20px 8px}.palette-heading span{font-size:13px;color:#828a96}.sandbox-palette{display:flex;flex-wrap:wrap;gap:7px;padding:5px 20px 17px}.sandbox-symbol{height:43px;min-width:44px;border:1px solid #e1dde9;border-radius:7px;background:#f8f6fc;color:#504665;font:italic 26px Georgia,'Times New 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button:disabled{opacity:.35;cursor:default}.sandbox-stage{position:relative;height:clamp(470px,65vh,700px);background:#efefed;overflow:hidden;isolation:isolate;touch-action:none}.sandbox-stage canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.stage-nodes{position:absolute;inset:0;pointer-events:none}.sandbox-object{position:absolute;left:0;top:0;transform:translate(-50%,-50%);padding:9px 13px;min-width:54px;min-height:55px;background:transparent;color:#242730;font:italic 41px/1.1 Georgia,'Times New Roman',serif;border:1px solid transparent;border-radius:11px;cursor:grab;pointer-events:auto;touch-action:none;user-select:none;-webkit-user-select:none;white-space:nowrap;transition:background .13s,border-color .13s,box-shadow 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#eceaf0;padding-top:12px;margin-top:14px}.selection-note a{color:#7d65a9}.selection-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:17px}.selection-actions button,.replay-effect{border:1px solid #e3deeb;border-radius:6px;font-size:13px;color:#736087;background:#f8f5fc;padding:7px 9px;min-height:35px}.selection-actions button:first-child{background:#7956bb;color:white;border-color:#7956bb}.selection-actions button:disabled{opacity:.35;cursor:default}.selection-actions button[aria-pressed=true]{background:#4f356f}.selection-parameters{display:grid;gap:13px;margin-top:19px}.sandbox-param>div{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:#687081;margin-bottom:5px}.sandbox-param output{color:#765993;font-variant-numeric:tabular-nums;white-space:nowrap}.sandbox-param input{width:100%;height:20px;accent-color:#7958b5;cursor:pointer}.formula-result{background:#f2eff8;border-radius:8px;padding:10px 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#eeeef2;margin-top:6px}.sandbox-footer{margin-top:0;padding-top:20px;font-size:12px}.sandbox-footer a{text-decoration:none;color:#83719d}.sandbox-footer a:hover{text-decoration:underline}.palette-ghost{position:fixed;pointer-events:none;z-index:100;background:#fbf8ffed;border:1px solid #a895c5;padding:7px 15px;border-radius:9px;box-shadow:0 8px 24px #41265d30;transform:translate(-50%,-50%);font:italic 38px Georgia,serif;color:#524060}
@media(min-width:1550px){.sandbox-layout{grid-template-columns:minmax(0,1fr) 330px;gap:26px}.sandbox-main{padding:30px 40px}.sandbox-symbol{min-width:49px;height:47px}.sandbox-stage{height:670px}}
@media(max-width:1080px){.sandbox-main{padding:24px}.sandbox-layout{grid-template-columns:minmax(0,1fr) 270px;gap:17px}.selection-panel,.recipe-panel{padding:17px}.sandbox-symbol{min-width:41px}.sandbox-palette{gap:6px;padding-left:17px;padding-right:17px}.sandbox-stage{height:590px}.palette-heading{padding-left:17px;padding-right:17px;flex-wrap:wrap;gap:3px}.selection-actions{gap:5px}.selection-actions button{font-size:12px;padding:7px 8px}}
@media(max-width:820px){.sandbox-layout{grid-template-columns:1fr}.sandbox-aside{grid-template-columns:1fr 1fr;align-items:start}.sandbox-stage{height:530px}.sandbox-main{padding:22px}.sandbox-palette{gap:7px}.sandbox-symbol{min-width:43px}.sandbox-heading{margin-bottom:20px}}
@media(max-width:560px){.sandbox-main{padding:18px 14px}.sandbox-heading{align-items:flex-start}.sandbox-heading h1{font-size:25px}.sandbox-heading p{font-size:14px;max-width:280px}.sketch-label{display:none}.sandbox-palette{gap:6px;padding:4px 14px 14px}.sandbox-symbol{min-width:40px;height:42px;font-size:26px}.palette-heading{padding:14px 14px 10px}.palette-heading h2{font-size:15px}.palette-heading span{font-size:12px}.scene-toolbar{padding:10px 13px;gap:7px}.scene-caption{font-size:12px;gap:6px}.object-count{display:none}.scene-actions{gap:5px}.scene-actions button{font-size:13px;padding:6px 9px}.scene-actions button:first-child{min-width:68px}.sandbox-stage{height:500px}.sandbox-object{font-size:37px;padding:7px 10px;min-width:48px}.sandbox-object.recipe-object{font-size:27px}.sandbox-object.blackhole-object{font-size:22px}.stage-bottom{font-size:12px;padding:12px}.stage-bottom>span:last-child{display:none}.stage-instruction p{font-size:13px}.scene-message{font-size:13px;padding:12px 14px}.sandbox-aside{grid-template-columns:1fr}.selection-panel,.recipe-panel{padding:19px}.selection-parameters{grid-template-columns:1fr 1fr;gap:17px}.selection-description{font-size:15px}.selection-actions button{font-size:14px}.recipe-list-button{padding:13px 2px}.selected-formula{font-size:36px}.sandbox-footer{display:block;font-size:12px}.sandbox-footer a{display:block;margin-top:6px}}
.blackhole-sequence-note{background:#f4eaf8;border-left:2px solid #b78acb;padding:10px 12px;border-radius:0 6px 6px 0;color:#765383!important}
html[lang=ja] .sandbox-object{font-family:Georgia,serif}
.sandbox-guide-link{display:block;text-decoration:none;color:#76569c;font-size:13px;margin-top:15px;font-weight:600}.sandbox-guide-link:hover{text-decoration:underline}.selected-formula{overflow-x:auto;font-size:27px;overflow-wrap:anywhere}.selected-formula sub,.selected-formula sup{font-size:.6em}.sandbox-object.extra-object{font-size:24px}.sandbox-object.extra-object sub,.sandbox-object.extra-object sup{font-size:.6em}.recipe-formula{font-size:20px}.recipe-formula sup{font-size:.6em}.recipe-list-button>span:first-child{min-width:0}.recipe-formula{max-width:53%;white-space:normal;overflow-wrap:anywhere}.sandbox-param>div{flex-wrap:wrap;gap:3px}.sandbox-symbol{min-height:44px}
@media(max-width:560px){.selected-formula{font-size:28px}.sandbox-object.extra-object{font-size:22px}.selection-parameters{gap:15px 12px}.sandbox-param>div{font-size:13px}.recipe-formula{font-size:24px}.recipe-label{font-size:15px}}