:root{color-scheme:dark;--bg:#090c0e;--panel:#11171b;--line:#293239;--text:#f0f3f4;--muted:#9eabb3;--yellow:#ffdc00;--purple:#a79bd2;--red:#ff8b75}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 70% 2%,#1d2325 0,transparent 40%),var(--bg);font-family:Arial,sans-serif;color:var(--text);font-size:14px}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--yellow);outline-offset:4px}a{color:inherit;text-decoration:none}a:hover{color:var(--yellow)}button{color:var(--text);background:transparent;border:1px solid var(--line);border-radius:8px;padding:11px 14px;min-height:42px}button:hover{border-color:#68747d;background:#ffffff05}button:disabled{opacity:.4;cursor:default}select{width:100%;color:var(--text);background:#0b1014;border:1px solid #36424a;border-radius:8px;padding:11px 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#ff6b4533)}.slot{position:absolute;top:188px;transform:translateX(-50%);border:0;padding:0;width:28px;height:34px;min-height:34px;border-radius:50%;color:#586f7c;z-index:2}.slot:before{content:'';display:block;width:8px;height:8px;border:1px solid #84949c;border-radius:50%;background:#121d24;margin:auto}.slot:hover:before,.slot.active:before{background:var(--yellow);border-color:var(--yellow);box-shadow:0 0 12px #ffdc0055}.slot:hover{background:transparent}.slot.active{color:var(--yellow)}.slot:after{content:attr(data-label);font-size:9px;position:absolute;top:13px;left:50%;transform:translateX(-50%);white-space:nowrap;opacity:0}.slot:hover:after,.slot:focus-visible:after{opacity:1}.bat{position:absolute;top:232px;transform:translateX(-50%);padding:0;border:0;background:transparent!important;min-height:0;touch-action:none;z-index:3;transition:left .22s,top .22s}.bat img{display:block;width:100%;filter:drop-shadow(0 7px 6px #0008);pointer-events:none}.bat 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strong{color:var(--yellow);font-size:9px;letter-spacing:1.1px;white-space:nowrap}.safety span{color:#c3c5b8}dialog{background:#111a20;color:var(--text);border:1px solid #44515a;border-radius:20px;width:min(470px,calc(100% - 30px));padding:34px;box-shadow:0 30px 120px #000b;max-height:calc(100dvh - 35px);overflow:auto;text-align:center}dialog::backdrop{background:#05080ad9;backdrop-filter:blur(9px)}.dialog-close{position:absolute;top:10px;right:10px;border:0;font-size:22px;color:var(--muted)}#result-art{height:130px;margin:0 auto 18px}#result-art img{height:130px;max-width:200px}#result-art.question{font-size:90px;color:var(--purple);font-weight:900}dialog h2{font-size:28px;letter-spacing:-1px;margin:10px 0 16px}dialog p{font-size:13px;color:var(--muted);line-height:1.7}dialog ul{font-size:12px;color:#f0b5a2;text-align:left;padding-left:20px;line-height:1.7}dialog .fine{font-size:10px}.dialog-actions{display:flex;justify-content:center;gap:10px;margin-top:24px;flex-wrap:wrap}.boom #result-art{animation:boom .55s ease-out}.win #result-art{animation:win .7s ease-out}.win .gorilla img{animation:win .6s ease-out}@keyframes boom{0%{transform:scale(.3) rotate(-12deg)}50%{transform:scale(1.12) rotate(5deg)}100%{transform:scale(1)}}@keyframes win{0%{transform:translateY(18px) rotate(-8deg)}50%{transform:translateY(-12px) rotate(8deg)}100%{transform:translateY(0)}}.method-page{max-width:900px}.method-page h1{font-size:36px;letter-spacing:-1.3px}.method-page h2{font-size:21px;margin-top:30px}.method-page p,.method-page li{line-height:1.85;color:#b7c2ca}.method-page a{color:var(--yellow)}.method-page code{background:#141c22;padding:3px 7px;border-radius:5px}.method-page table{border-collapse:collapse;width:100%;font-size:13px}.method-page td,.method-page th{padding:12px 8px;border-bottom:1px solid var(--line);text-align:right}.method-page th:first-child,.method-page td:first-child{text-align:left}.table-scroll{overflow:auto}.validation-badge{border-left:2px solid var(--yellow);padding:15px 18px;background:#ffdc0008}
@media(min-width:1500px){.board{height:430px}.rig-svg{height:410px}}
@media(max-width:1050px){.workspace{grid-template-columns:minmax(0,1fr) 260px}.levels button{font-size:10px;padding:10px 8px;gap:6px}.top{padding:20px 24px}main{padding:28px 24px 100px}.play-title h2{font-size:20px}.support-pickers{grid-template-columns:1fr}.position-control{padding:15px}.play-actions{padding:18px 15px}}
@media(max-width:860px){.workspace{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:1fr 1fr}.support-pickers{grid-template-columns:1fr 1fr}.small-note{grid-column:1/-1}.levels{grid-template-columns:repeat(3,1fr)}.levels button{font-size:11px}.intro h1{font-size:58px}.edition{font-size:10px}.position-control{padding:16px 24px}.play-actions{padding:18px 24px}}
@media(max-width:540px){.top{padding:15px 16px;gap:12px}.brand{font-size:22px}.brand img{width:50px}.back{font-size:0}.back:before{content:'←';font-size:20px}main{padding:24px 14px 130px}.intro{gap:10px;align-items:flex-start;margin-bottom:24px}.intro h1{font-size:50px;letter-spacing:-3px}.intro h1 i{display:none}.intro .eyebrow{font-size:8px;letter-spacing:1px}.intro p{font-size:12px;line-height:1.6;max-width:230px}.edition{max-width:120px;padding:10px;font-size:9px;line-height:1.5}.edition small{font-size:8px;margin-left:0}.levels{gap:6px}.levels button{font-size:9px;min-height:53px}.levels .num{font-size:13px}.play-title{padding:20px 17px 0}.play-title h2{font-size:19px}.play-title .quiet{font-size:10px;padding:7px}.sidebar{grid-template-columns:1fr}.small-note{grid-column:auto}.interaction-note,.bat-tabs{padding-left:17px;padding-right:17px}.position-control{padding:16px 17px;flex-wrap:wrap}.position-control select{width:170px}.play-actions{padding:16px 17px;gap:8px}.play-actions .primary{flex:1;font-size:12px}.play-actions .quiet{font-size:11px}.play-actions #moves{display:none}.charts{grid-template-columns:1fr}.safety{align-items:flex-start;flex-direction:column;gap:4px;padding:9px 15px;font-size:9px}.technical summary{padding:18px;font-size:12px}.technical-body{padding:15px}.technical-body td,.technical-body th{font-size:10px;padding:8px 4px}.method-page h1{font-size:29px}dialog{padding:28px 22px}}
.gorilla.strong{width:132px;height:132px;top:30px}.gorilla.strong .gorilla-bubble{top:-12px}#free-mode{font-size:10px;min-height:30px;padding:5px 10px;margin-left:auto;margin-right:15px;color:var(--yellow);border-color:#665b1b}#free-mode[aria-pressed=true]{background:#ffdc0018}.equipment-tools{padding:15px 24px;border-top:1px solid var(--line)}.equipment-tools[hidden]{display:none}.tool-add{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.tool-add button{font-size:10px;min-height:32px;padding:7px 9px}.tool-edit{display:grid;grid-template-columns:auto 85px auto 65px auto;align-items:center;gap:9px}.tool-edit label{margin:0;font-size:10px}.tool-edit select{font-size:11px;padding:8px;min-height:35px}.tool-edit button{font-size:10px;padding:8px;min-height:35px}@media(max-width:540px){.tool-edit{grid-template-columns:1fr 1fr}.tool-edit button{grid-column:1/-1}.equipment-tools{padding:15px 17px}}
.mobile-pan{display:none}@media(max-width:540px){.mobile-pan{display:block;color:var(--yellow);margin-top:6px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.support-count-control{margin-top:18px}.support-count-control>div{display:grid;grid-template-columns:42px 1fr 42px;gap:8px}.support-count-control button{padding:8px;color:var(--yellow);font-size:20px}.support-count-control p{font-size:11px;color:var(--yellow);line-height:1.5;margin:10px 0 4px}.reaction-model{font-size:11px;color:var(--muted);line-height:1.6}.axis>span{position:absolute;transform:translateX(-50%);white-space:nowrap}.axis>span:first-child{transform:none}.axis>span:last-child{transform:translateX(-100%)}.support-pickers small{font-size:9px}#technical-result td{overflow-wrap:anywhere}
.stage-label{top:0}.board{margin-top:22px}

#profile-note{display:block;margin:8px 0 17px;line-height:1.6}.stage-label #truss-label{color:#7e8d97;margin:0}#game-criteria:empty{display:none}#game-criteria{border-top:1px solid var(--line);margin-top:18px;padding-top:15px}.criterion{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--yellow)}.criterion span{font-size:11px;line-height:1.5}.criterion strong{font-size:19px;white-space:nowrap}.criterion.over{color:var(--red)}

.criterion+.criterion{margin-top:12px}#game-criteria>small{display:block;line-height:1.6;margin-top:12px;color:var(--muted)}#deflection-preview{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}#deflection-preview h3{font-size:10px;letter-spacing:1px;line-height:1.7;color:var(--muted)}#deflection-value{font-size:27px;color:var(--yellow)}#deflection-chart{width:100%;display:block}#deflection-chart text{font-size:12px;fill:#b7c2ca}#deflection-note{font-size:11px;line-height:1.7;color:var(--muted)}#export-calculation{margin:14px 0}

.play{align-self:start}.play>#deflection-preview{margin:0;padding:20px 24px;background:#0b1115}.play #deflection-chart{max-width:600px;margin:0 auto}.play #deflection-value{display:block}.play #deflection-note{margin-bottom:0}

.board{height:460px}.slot:disabled{opacity:.3;cursor:default}.slot:disabled:hover:before{background:#121d24;border-color:#84949c;box-shadow:none}.slot:disabled:hover:after{opacity:0}select:disabled{opacity:.4}

#load-points-note{display:block;color:var(--yellow);margin:9px 0 16px;line-height:1.6}.board-scroll{scrollbar-color:#68747d #0b1014}