:root{color-scheme:light;--ink:#071b56;--blue:#1262f7;--muted:#58677f;--line:#d7e2f1;--panel:#eff5fc;font:16px/1.5 Arial,Helvetica,sans-serif;color:var(--ink);background:#fff}*{box-sizing:border-box}body{margin:0}main{max-width:1380px;margin:auto;padding:12px 30px 30px}.intro{margin-bottom:12px}.intro h1{font-size:34px;line-height:1.15;letter-spacing:-1px;margin:0 0 5px;font-weight:800}.intro p{font-size:17px;margin:0}button,select,input{font-family:inherit;font-size:14px}button,select{min-height:44px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);font-weight:600}button{padding:7px 12px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}button:hover{background:#e6efff}button.primary,[role=tab][aria-selected=true]{background:var(--blue);border-color:var(--blue);color:#fff}.primary:hover{background:#064bd2}button svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}button:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid #f4ae23;outline-offset:3px}a{color:var(--blue)}.simulator{display:grid;grid-template-columns:minmax(0,1fr) 305px;gap:16px}.stage{min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:var(--panel);align-self:start}.toolbar{display:flex;gap:7px;padding:9px;flex-wrap:wrap;background:#fff}.toolbar #randomize{flex:1.25;white-space:nowrap}.toolbar #share{flex:1;white-space:nowrap}.toolbar #pause,.toolbar #blower{min-width:76px}.scene-wrap{position:relative;height:422px;background:#8fbeeb;touch-action:none;overflow:hidden}canvas{display:block;width:100%;height:100%;cursor:grab;touch-action:none}canvas.is-catchable{cursor:grab}canvas.is-grabbed{cursor:grabbing}.grab-hint{position:absolute;bottom:12px;left:14px;font-size:13px;color:#fff;background:#122646c9;padding:5px 9px;border-radius:5px;pointer-events:none}.event{font-size:13px;font-weight:600;color:#695617;margin:0;min-height:0;order:8}.event[data-visible=true]{padding:6px 0}.event[data-visible=false]{display:none}.scene-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 12px;min-height:52px}.meter{display:flex;align-items:center;gap:8px;font-size:12px}.meter strong{min-width:56px}meter{height:18px;width:104px}meter::-webkit-meter-bar{background:#d9e2ef;border:0;border-radius:12px}meter::-webkit-meter-optimum-value{background:#f8d442;border-radius:12px}.environment{display:flex;align-items:center;gap:8px;font-size:12px}.environment select{min-height:36px;font-size:12px;padding:5px;max-width:155px}.controls{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:15px;min-width:0}.controls h2{font-size:25px;line-height:1.1;margin:0 0 8px;letter-spacing:-.6px}.slider{margin-bottom:5px}.slider label{display:flex;align-items:center;justify-content:space-between;font-size:13px;line-height:18px;font-weight:600}.slider output{font-variant-numeric:tabular-nums;color:var(--blue);font-size:12px}.slider input{display:block;accent-color:var(--blue);width:100%;height:29px;margin:0;cursor:pointer;touch-action:pan-y}.tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:3px;border-top:1px solid var(--line);margin:7px 0 8px;padding-top:9px}.tabs button{font-size:12px;min-width:0;padding:6px 2px;border:0;background:#dfe8f5}.reset{display:flex;width:100%;background:transparent;border:0;margin-top:4px;min-height:44px;font-size:13px}.style-field{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;margin:5px 0}.style-field select{min-height:34px;padding:2px 8px;width:140px;font-size:13px}.style-field input[type=color]{border:0;width:60px;height:32px;cursor:pointer}.presets{display:flex;align-items:center;gap:12px;padding:10px 0}.presets label{font-size:14px;font-weight:700;white-space:nowrap}.presets select{padding:6px 12px;min-width:235px;background:#fffce8;border-color:#edd87d}.presets p{font-size:13px;color:var(--muted);margin:0}.status{font-size:13px;margin:0;min-height:0}.status:not(:empty){padding:6px 0}.share-fallback{padding:12px;background:#fff5c2;border-radius:8px}.share-fallback input{width:min(70%,700px);height:44px;margin:8px}.about{display:grid;grid-template-columns:1.2fr 1fr;gap:50px;border-top:1px solid var(--line);padding:28px 0;max-width:1150px}.about h2{font-size:25px;line-height:1.2;margin:0 0 12px}.about h3{font-size:17px;margin:18px 0 5px}.about p{font-size:15px;color:#3e4c67;margin:6px 0 12px;line-height:1.65}footer{display:flex;flex-wrap:wrap;gap:22px;border-top:1px solid var(--line);padding-top:15px;font-size:14px}.skip{position:fixed;left:8px;top:-70px;z-index:20000;padding:10px;background:#fff}.skip:focus{top:8px}.noscript{margin:20px}.controls input[type=range]:focus-visible{outline-offset:1px}@media(min-width:1450px){.scene-wrap{height:440px}}@media(max-width:1050px){main{padding:12px 18px}.simulator{grid-template-columns:minmax(0,1fr) 285px;gap:12px}.toolbar{gap:5px}.toolbar button{font-size:12px;padding:6px 8px}.scene-wrap{height:440px}.environment{gap:4px}.environment select{max-width:115px}.meter{gap:5px}meter{width:68px}}@media(max-width:760px){main{padding:9px 10px 24px;display:flex;flex-direction:column}.intro{order:0}.stage{order:1}.presets{order:2}.quick-controls{order:3}.tabs{order:4}#panel{order:5}.reset{order:6}.share-fallback{order:7}.status{order:8}.about{order:9}footer{order:10}.intro{margin-bottom:9px}.intro h1{font-size:26px;line-height:1.08;letter-spacing:-.7px;max-width:560px}.intro p{font-size:13px;margin-top:6px}.simulator{display:contents}.stage{display:flex;flex-direction:column}.toolbar{display:grid;grid-template-columns:repeat(6,1fr);gap:5px;padding:6px}.toolbar #randomize{grid-column:span 3;font-size:12px}.toolbar #share{grid-column:span 3;font-size:12px}.toolbar #pause,.toolbar #blower,.toolbar #gust{grid-column:span 2;min-width:0;font-size:12px}.toolbar button{min-height:44px;padding:5px}.toolbar button svg{width:16px;height:16px}.scene-wrap{height:246px;order:1}.scene-footer{order:2;padding:5px 8px;min-height:43px}.meter{font-size:10px;gap:4px}.meter strong{min-width:51px}meter{width:56px}.environment{font-size:0}.environment select{font-size:11px;max-width:124px;min-height:32px}.grab-hint{font-size:11px;bottom:7px;left:8px;padding:3px 6px}.presets{display:grid;grid-template-columns:auto 1fr;gap:6px;padding:8px 0}.presets label{font-size:12px}.presets select{min-width:0;width:100%;font-size:12px;min-height:44px}.presets p{display:none}.controls{display:contents}.controls h2{display:none}.quick-controls{display:grid;grid-template-columns:1fr 1fr;column-gap:14px;row-gap:3px;margin:0 3px}.quick-controls .slider{margin-bottom:0}.slider label{font-size:12px}.slider input{height:27px}.tabs{margin-top:12px}.tabs button{font-size:13px}#panel{padding:2px 7px;background:var(--panel);border-radius:7px}.reset{margin-top:4px}.about{grid-template-columns:1fr;gap:8px;padding:25px 0}.about h2{font-size:24px}.event{font-size:12px;padding:6px 8px}.share-fallback input{width:100%;margin:8px 0}}@media(max-width:760px) and (max-height:740px){.scene-wrap{height:146px}.intro{margin-bottom:5px}.intro p{margin-top:3px}main{padding-top:5px}.intro h1{font-size:24px}.intro p{font-size:12px}.scene-footer{min-height:37px}.presets{padding:4px 0}.quick-controls .slider label{line-height:16px}.quick-controls .slider input{height:25px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}


/* Deliberate 44px range targets; fixed rail keeps the preset picker reachable. */
.slider input,.quick-controls .slider input{height:44px;appearance:none;-webkit-appearance:none;background:transparent;min-width:0}
.slider input::-webkit-slider-runnable-track{height:7px;border-radius:10px;background:linear-gradient(to right,var(--blue) 0 var(--fill,50%),#d6e2f2 var(--fill,50%) 100%)}
.slider input::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:20px;height:20px;background:#fff;border:1px solid #86adf8;border-radius:50%;margin-top:-6.5px;box-shadow:0 1px 3px #31578933}
.slider input::-moz-range-track{height:7px;border-radius:10px;background:#d6e2f2}.slider input::-moz-range-progress{height:7px;background:var(--blue);border-radius:10px}.slider input::-moz-range-thumb{width:18px;height:18px;background:#fff;border:1px solid #86adf8;border-radius:50%}
@media(min-width:761px){.controls{height:538px;display:flex;flex-direction:column}.quick-controls{display:grid;grid-template-columns:1fr 1fr;column-gap:13px}.quick-controls .slider{margin:0}.quick-controls label{font-size:12px;line-height:16px;flex-wrap:wrap}.controls #panel{min-height:0;flex:1;overflow:auto;padding:0 3px}.controls .reset{flex-shrink:0}.controls .tabs{flex-shrink:0}}
@media(max-width:760px){.toolbar button{min-width:0!important;white-space:normal!important;overflow-wrap:anywhere}.toolbar #randomize,.toolbar #share{white-space:normal}.scene-footer{flex-wrap:wrap}.meter{flex-wrap:wrap}.presets{grid-template-columns:minmax(0,auto) minmax(0,1fr)}.tabs button{overflow-wrap:anywhere}.quick-controls{min-width:0;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.slider label{flex-wrap:wrap;gap:2px}.style-field{flex-wrap:wrap}.intro h1{overflow-wrap:break-word}}

.stage{width:100%;container-type:inline-size;container-name:tube-stage}
@container tube-stage (max-width:300px){.toolbar{display:flex;flex-direction:column;align-items:stretch}.toolbar button{width:100%;overflow-wrap:normal}.scene-footer{align-items:flex-start;flex-direction:column}.environment{align-self:flex-end}}

/* Keep the preset/action rail visible on the reported short desktop size. */
@media(min-width:761px) and (max-height:740px){main{padding-top:8px}.intro h1{font-size:32px}.scene-wrap{height:360px}.controls{height:476px}}

button:disabled,select:disabled{opacity:.55;cursor:not-allowed}button:disabled:hover{background:#fff}.style-field select,.style-field input[type=color]{min-height:44px}.style-note{font-size:12px;line-height:1.4;color:var(--muted);margin:8px 0}