.contraption-lab{max-width:1200px;margin:auto;color:var(--ink);border-bottom:1px solid var(--line)}.contraption-lab,.contraption-lab *{box-sizing:border-box}.contraption-lab [hidden]{display:none!important}.contraption-lab svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.contraption-lab button,.contraption-lab select{font:inherit;color:var(--ink);touch-action:manipulation}.contraption-lab button{cursor:pointer}.contraption-lab button:disabled{opacity:.45;cursor:default}.contraption-lab :focus-visible{outline:3px solid var(--accent);outline-offset:3px}.contraption-lab ::selection{background:var(--accent);color:var(--button-ink)}
.cl-entry{display:grid;grid-template-columns:1fr 56px auto;gap:36px;align-items:center;padding:30px 40px;list-style:none;cursor:pointer}.cl-entry::-webkit-details-marker{display:none}.cl-entry h2{font:600 clamp(25px,3vw,34px)/1.4 "Research Display","Songti SC",serif;letter-spacing:-.02em;margin:0;border:0}.cl-entry p{font-size:13px;line-height:1.7;color:var(--muted);margin:8px 0 0}.cl-entry>svg{width:56px;height:56px;color:var(--accent)}.cl-entry>span{font-size:13px;color:var(--accent);min-width:92px}.cl-app{padding:0 40px 30px;font-size:14px;line-height:1.7}.cl-scenario{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:14px 0 20px;border-bottom:1px solid var(--line);font-size:13px}.cl-scenario label{display:flex;align-items:center;gap:14px}.cl-scenario select{min-height:44px;padding:8px 30px 8px 12px;background:var(--panel);border:1px solid var(--line);border-radius:6px;max-width:100%;font-size:13px}.cl-scenario option{background:var(--panel);color:var(--ink)}.cl-scenario>span{font-size:12px;color:var(--muted)}.cl-app>h3{font:600 26px/1.4 "Research Display","Songti SC",serif;border:0;margin:22px 0 8px}.cl-intro{max-width:65ch;color:var(--muted);font-size:13px;margin:0 0 20px!important}
.cl-game{max-width:820px;margin:auto;border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:18px}.cl-builder>summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;min-height:44px;font-weight:600;border-bottom:1px solid var(--line);padding:0 0 10px}.cl-builder>summary:before{content:"";width:7px;height:7px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);margin:0 10px 3px 0}.cl-builder:not([open])>summary:before{transform:rotate(-45deg)}.cl-builder>summary>span:first-child{margin-right:auto}.cl-builder>summary>span:last-child{font-size:12px;font-weight:400;color:var(--muted)}.cl-workbench{display:grid;grid-template-columns:220px 1fr;gap:30px;padding:20px 0}.cl-jig{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;align-self:center}.cl-jig button{aspect-ratio:1;min-width:0;min-height:44px;border:1px dashed var(--line);border-radius:6px;background:var(--canvas);padding:10px}.cl-jig button.has-part{border-style:solid;border-color:var(--accent)}.cl-jig button.cl-core{border-style:solid;background:var(--ink);color:var(--canvas);opacity:1}.cl-jig svg{width:100%;height:100%;display:block}.cl-jig button:hover:not(:disabled){background:var(--field)}.cl-parts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.cl-parts button{display:grid;grid-template-columns:28px 1fr;column-gap:10px;text-align:left;padding:10px;min-height:54px;border:1px solid var(--line);border-radius:6px;background:transparent;align-items:center}.cl-parts button>svg{width:28px;height:28px;grid-row:span 2}.cl-parts button>span{font-size:12px}.cl-parts button>small{font-size:10px;color:var(--muted);line-height:1.5}.cl-parts button[aria-pressed=true]{border:2px solid var(--accent);padding:9px;background:var(--field)}.cl-parts button:hover:not(:disabled){background:var(--field)}.cl-build-tools{display:flex;gap:8px}.cl-build-tools button,.cl-run button{min-height:44px;border:1px solid var(--line);border-radius:6px;padding:8px 12px;background:transparent;font-size:12px}.cl-build-note{font-size:12px;color:var(--muted);margin:10px 0 18px!important;min-height:21px}.cl-stage{scroll-margin-top:140px}.cl-hud{display:flex;gap:32px;padding:16px 0 8px;font-variant-numeric:tabular-nums}.cl-hud>span{display:flex;align-items:baseline;gap:8px}.cl-hud small{font-size:12px;color:var(--muted)}.cl-hud strong{font-size:20px;font-weight:600}.cl-run{display:flex;flex-wrap:wrap;gap:8px;padding:6px 0 14px}.cl-run button:hover:not(:disabled){background:var(--field)}.cl-run .cl-primary{min-width:110px;background:var(--accent);color:var(--button-ink);border-color:var(--accent);font-weight:600}.cl-field{display:block;width:100%;aspect-ratio:480/280;background:var(--canvas);border:1px solid var(--line);border-radius:8px;overflow:hidden}.cl-terrain{fill:var(--field);stroke:var(--muted);stroke-width:1.5}.cl-finish{stroke:var(--accent);stroke-width:3}.cl-finish-banner{fill:var(--accent);stroke:var(--accent)}.cl-machine{color:var(--accent)}.cl-machine .cl-body{fill:var(--panel);stroke:var(--ink);stroke-width:2}.cl-machine .cl-cargo{fill:var(--ink);stroke:var(--ink)}.cl-machine .cl-window{fill:var(--canvas);stroke:none}.cl-part-fill{fill:var(--panel)}.cl-wind{stroke:var(--muted);stroke-width:1.5}.cl-status{font-size:13px;line-height:1.8;border-top:1px solid var(--line);padding:12px 0 0;margin:14px 0 0!important;min-height:64px;max-width:75ch}.cl-result{padding:16px 0 0}.cl-result h4{font:600 24px/1.5 "Research Display","Songti SC",serif;margin:0 0 8px}.cl-result p{font-size:13px;line-height:1.8;max-width:65ch;margin:0}.cl-guide{border-top:1px solid var(--line);margin-top:20px;color:var(--muted);font-size:13px}.cl-guide>summary{min-height:44px;color:var(--ink);padding:10px 0;cursor:pointer}.cl-guide p{max-width:75ch;line-height:1.8;margin:10px 0}.cl-save{font-size:12px;color:var(--muted);line-height:1.8;margin:18px 0 0!important}.cl-debris{animation:cl-break .65s cubic-bezier(.16,1,.3,1) both;transform-box:fill-box;transform-origin:center}@keyframes cl-break{from{transform:translate(0,0) rotate(0)}to{transform:translate(var(--cl-dx),var(--cl-dy)) rotate(var(--cl-spin))}}.cl-game.is-still .cl-debris{animation:none}
@media(max-width:650px){.cl-entry{padding:24px 22px;grid-template-columns:1fr 46px;gap:14px}.cl-entry>svg{width:46px;height:46px}.cl-entry>span{grid-column:1/-1}.cl-entry p{font-size:12px}.cl-app{padding:0 12px 26px}.cl-scenario{flex-direction:column;align-items:stretch;gap:8px}.cl-scenario label{justify-content:space-between}.cl-app>h3{font-size:24px}.cl-intro{font-size:12px}.cl-game{padding:10px}.cl-workbench{grid-template-columns:1fr;gap:16px;padding:16px 0}.cl-jig{width:190px;justify-self:center}.cl-jig button{padding:9px}.cl-parts{gap:6px}.cl-parts button{padding:8px;column-gap:7px;grid-template-columns:24px 1fr}.cl-parts button[aria-pressed=true]{padding:7px}.cl-parts button>svg{width:24px;height:24px}.cl-parts button>span{font-size:11px}.cl-parts button>small{font-size:10px}.cl-build-tools button,.cl-run button{font-size:11px;padding:7px 10px}.cl-build-note{font-size:11px}.cl-hud{gap:24px}.cl-hud>span{display:block}.cl-hud small{display:block;font-size:10px}.cl-hud strong{font-size:18px}.cl-run{gap:6px}.cl-run .cl-primary{min-width:96px}.cl-status{font-size:12px;min-height:68px}.cl-result h4{font-size:22px}.cl-stage{scroll-margin-top:130px}}
@media(prefers-reduced-motion:reduce){.contraption-lab *{animation:none!important;transition:none!important}}html[data-motion=off] .contraption-lab *{animation:none!important;transition:none!important}@media print{.contraption-lab{display:none!important}}