:root{color-scheme:dark;--bg:#0c0f12;--panel:#13171c;--line:#272d34;--muted:#87919e;--text:#edf2f6;--accent:#9bf4cc;--accent-dark:#142b23;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.35;cursor:not-allowed}a{color:inherit;text-decoration:none}header{height:82px;margin:0 38px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:17px;letter-spacing:1px}.brand strong{font-weight:700}.brand-mark{font-size:33px;color:var(--accent);line-height:1}.version{font-size:11px;color:#79838e;letter-spacing:2px;border-left:1px solid var(--line);padding-left:20px;margin-left:10px}.device-pill{font-size:13px;display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:30px;padding:10px 15px;color:#a0a8b2}.dot{width:6px;height:6px;background:#79838e;border-radius:50%}.connected .dot{background:var(--accent)}.connected{color:var(--accent)}main{max-width:1700px;margin:0 auto;display:grid;grid-template-columns:320px minmax(360px,1fr) 295px;padding:32px 38px 20px;gap:30px}.panel{padding:0 4px}.section-label{font-size:11px;letter-spacing:2.2px;color:#7d8895;margin:0 0 16px;font-weight:600}h1{font-size:32px;line-height:1.4;font-weight:550;letter-spacing:-1.2px;margin:0}h1 span{color:var(--accent)}.intro{font-size:14px;color:var(--muted);margin:10px 0 24px}label{font-size:14px;color:#c9d1da;display:block;margin:0 0 9px}.subtle{float:right;color:#76818e;font-size:12px}input:not([type=checkbox]):not([type=range]):not([type=radio]):not([type=file]),select,textarea{background:#171c22;color:var(--text);border:1px solid var(--line);border-radius:7px;padding:11px 12px;width:100%;font-size:14px}textarea{resize:vertical;min-height:92px;line-height:1.7}textarea::placeholder{color:#626d7a}.prompt-block{background:#151a1f;border:1px solid #2b343e;border-radius:9px;padding:14px}.prompt-block textarea{border:0;padding:0;background:none;min-height:77px}.text-button{border:0;background:none;color:var(--accent);padding:0;font-size:13px}.prompt-block .text-button{display:flex;justify-content:space-between;width:100%;padding-top:8px}.divider{height:1px;background:var(--line);margin:23px 0}.field-heading{display:flex;align-items:center;justify-content:space-between;margin-top:20px}.field-heading label{margin:0}output{font-size:20px;font-variant-numeric:tabular-nums;color:var(--accent)}output small{font-size:12px;color:var(--muted)}input[type=range]{width:100%;accent-color:var(--accent);margin:16px 0 10px;height:4px}.range-labels{display:flex;justify-content:space-between;color:#727e8b;font-size:12px}.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}.switch-row{display:flex;justify-content:space-between;align-items:center;margin:22px 0}.switch-row small{display:block;color:var(--muted);font-size:12px;margin-top:5px}.switch-row input{appearance:none;background:#313943;border-radius:12px;width:36px;height:22px;cursor:pointer;position:relative;flex-shrink:0}.switch-row input:before{content:'';background:#abb5bf;width:16px;height:16px;position:absolute;left:3px;top:3px;border-radius:50%;transition:transform .15s}.switch-row input:checked{background:var(--accent)}.switch-row input:checked:before{background:#142b23;transform:translateX(14px)}fieldset{border:0;padding:0;margin:22px 0}legend{font-size:14px;color:#c9d1da;margin-bottom:12px}.themes{display:flex;gap:12px}.themes label{display:flex;align-items:center;gap:7px;font-size:13px;margin:0;cursor:pointer}.themes input{appearance:none;position:absolute;width:1px;height:1px}.swatch{width:21px;height:21px;border-radius:50%;display:inline-block;border:4px solid var(--bg)}.mint{background:#63e6be}.amber{background:#ffbe65}.ice{background:#73b9ff}.themes input:checked+.swatch{outline:1px solid var(--accent)}.themes input:focus-visible+.swatch{outline:2px solid white}.button{border:0;border-radius:7px;padding:13px 16px;font-weight:600;font-size:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;transition:background .15s,transform .15s}.button:active:not(:disabled){transform:translateY(1px)}.primary{background:var(--accent);color:#10251d}.primary:hover:not(:disabled){background:#c0ffe1}.hint{font-size:12px;line-height:1.7;color:var(--muted);margin:10px 0}.design>.hint{text-align:center}.play-column{border-left:1px solid var(--line);border-right:1px solid var(--line);padding:0 26px}.play-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.play-top .section-label{margin-bottom:10px}h2{font-size:20px;font-weight:550;margin:0 0 20px;letter-spacing:-.5px}.play-top h2{margin:0}.tag{padding:5px 8px;font-size:11px;border:1px solid #37404a;color:#9ba7b4;border-radius:4px;white-space:nowrap}.game-stage{margin:38px auto 25px;width:100%;max-width:480px;display:flex;justify-content:center}.screen-ring{width:100%;padding:8px;border-radius:50%;border:1px solid #3a424c;background:#181d23;box-shadow:0 12px 40px #0005,inset 0 0 0 4px #101419}canvas{display:block;width:100%;aspect-ratio:1;border-radius:50%;background:#080d13;cursor:pointer;image-rendering:pixelated}canvas:focus{outline:2px solid var(--accent);outline-offset:8px}.game-stats{display:flex;justify-content:center;gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:19px 0;max-width:480px;margin:auto}.game-stats>div{flex:1;text-align:center;border-right:1px solid var(--line)}.game-stats>div:last-child{border:0}.game-stats span{display:block;color:#86919e;font-size:12px;margin-bottom:6px}.game-stats strong{font-family:ui-monospace,monospace;font-size:26px;font-weight:400;letter-spacing:1px}.game-stats .status-word{font-family:inherit;font-size:15px;line-height:31px;letter-spacing:0}.controls-area{display:flex;align-items:center;flex-direction:column;margin-top:25px}.play-button{width:auto;min-width:190px;justify-content:center;background:#243b31;color:#b6f9d8;border:1px solid #3d6c57;font-size:15px}.play-button span{font-size:22px}.secondary-actions{display:flex;gap:22px;margin:13px 0 20px}.secondary-actions button{border:0;background:none;color:#919eac;font-size:12px}.direction-pad{display:grid;grid-template-columns:repeat(3,40px);grid-template-rows:repeat(2,34px);gap:4px}.direction-pad button{background:#1d242c;border:1px solid #39434e;border-radius:5px;color:#c8d4de;font-size:21px}.direction-pad button:active,.direction-pad button.active{background:#345b48;color:var(--accent);border-color:var(--accent)}.up{grid-column:2}.left{grid-column:1;grid-row:2}.down{grid-column:2;grid-row:2}.right{grid-column:3;grid-row:2}#keyboard-hint{font-size:12px;color:var(--muted);text-align:center;margin:15px 0 12px}.keycaps{display:flex;align-items:center;gap:5px;color:#6d7987;font-size:11px}kbd{font-family:inherit;font-size:10px;border:1px solid #343d47;border-radius:3px;padding:3px 5px;color:#b2bdc8}.hardware-title{font-family:ui-monospace,monospace;font-size:16px;margin-top:26px}.hardware-title span{display:block;font-family:inherit;font-size:12px;color:var(--muted);margin-top:6px}dl{margin:20px 0}.hardware-list div{display:flex;justify-content:space-between;font-size:12px;margin:14px 0;gap:8px}dt{color:var(--muted)}dd{margin:0}.hardware-list dd{color:#c4ced8;text-align:right}#port{font-size:11px;word-break:break-all}.package-card{background:#181e25;border:1px solid #2f3944;padding:18px;border-radius:9px;margin-top:28px}.package-top{display:flex;gap:12px;align-items:center;font-size:14px}.file-icon{font-family:monospace;font-size:22px;color:var(--accent);border:1px solid #3a574a;border-radius:6px;padding:9px 8px}.package-top small{display:block;margin-top:5px;font-size:12px;color:var(--muted);overflow-wrap:anywhere}.package-meta{display:flex;justify-content:space-between;font-family:ui-monospace,monospace;font-size:11px;color:#98a7b5;margin-top:20px}.package-card p{font-size:12px;line-height:1.6;color:var(--muted);min-height:36px;margin:13px 0}.package-links{display:flex;justify-content:space-between;gap:8px;margin-top:13px}.package-links a,.package-links button{font-size:12px;color:#b2c8bb}progress{width:100%;height:5px;accent-color:var(--accent);margin-top:15px}.metrics-heading{display:flex;justify-content:space-between;align-items:center}h3{font-size:14px;font-weight:500;margin:0}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:23px 15px;margin-top:22px}.metrics dt{font-size:12px;margin-bottom:8px}.metrics dd{display:flex;gap:5px;align-items:baseline}.metrics strong{font-size:23px;font-weight:450;font-family:ui-monospace,monospace}.metrics dd span{font-size:11px;color:var(--muted)}.device-note{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.device-note span{font-size:13px;color:#bec9d3}.device-note p{font-size:12px;line-height:1.8;color:var(--muted)}footer{display:flex;justify-content:space-between;padding:18px 38px 23px;font-size:11px;color:#657381;border-top:1px solid #1e252d;margin-top:15px}#notice{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(12px);background:#e1f7eb;color:#14261d;border:1px solid #b3d9c4;padding:13px 22px;border-radius:8px;box-shadow:0 10px 35px #0008;font-size:14px;opacity:0;pointer-events:none;transition:.2s;max-width:90vw;z-index:10}#notice.visible{opacity:1;transform:translateX(-50%) translateY(0)}#notice.error{background:#ffe1da;color:#552019;border-color:#e6aaa0}@media(min-width:1500px){main{grid-template-columns:350px 1fr 320px;gap:40px}.game-stage{max-width:500px;margin-top:30px}}@media(max-width:1150px){main{grid-template-columns:280px minmax(340px,1fr);gap:25px;padding:28px}.device{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;column-gap:30px;border-top:1px solid var(--line);padding-top:24px}.device>.section-label,.device>h2{grid-column:1/-1}.device .package-card{grid-column:2;grid-row:3/7;margin-top:0}.device>.divider{grid-column:1/-1}.device .metrics{grid-column:1/-1;grid-template-columns:repeat(4,1fr)}.device .device-note{grid-column:1/-1}.play-column{border-right:0;padding-right:0}.version{display:none}}@media(max-width:700px){header{margin:0 18px;height:68px}.brand{font-size:13px;gap:8px}.device-pill{font-size:11px;padding:7px 10px}main{display:flex;flex-direction:column;padding:24px 18px;gap:36px}.play-column{order:-1;border:0;padding:0}.game-stage{max-width:350px;margin:24px auto}.controls-area{margin-top:18px}.game-stats{padding:15px 0}.direction-pad{grid-template-columns:repeat(3,48px);grid-template-rows:repeat(2,40px)}.design{border-top:1px solid var(--line);padding-top:26px}.design h1 br{display:none}h1{font-size:26px}.device{display:block}.device .metrics{display:grid;grid-template-columns:1fr 1fr}.device .package-card{margin-top:24px}footer{padding:18px;gap:18px;font-size:10px}.keycaps{display:none}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
[hidden]{display:none!important}.rule-card{border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin:12px 0 22px;font-size:12px;color:var(--muted);line-height:1.8}.rule-card summary{cursor:pointer;color:var(--accent)}.rule-card ul{padding-left:17px}.rule-card p{margin-bottom:0}#engine{margin-top:8px}#control-help{text-align:center;max-width:420px;margin:12px auto}.secondary-actions button{font-size:12px;min-width:0}

.rule-examples{margin-top:16px}.rule-examples button{background:var(--surface,#151c22);color:inherit;border:1px solid #34423c;border-radius:6px;padding:7px 10px;margin:6px 6px 4px 0;cursor:pointer}.tank-fields>select{margin-bottom:16px}.tank-fields .two-columns{margin-top:16px}.direction-pad button,#action{touch-action:none}