*{box-sizing:border-box} :root{--ink:#263c30;--green:#276649;--paper:#faf9f4;--line:#dcded2} body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 'Avenir Next','Trebuchet MS',sans-serif}a{color:inherit;text-decoration:none}button,a,input,select{touch-action:manipulation}button{font:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #df8d55;outline-offset:4px}header{max-width:1240px;margin:auto;padding:26px 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-weight:700;font-size:18px;letter-spacing:-.7px}.brand span{color:#e17748}nav{display:flex;gap:25px;font-size:13px}nav a[aria-current=page]{color:var(--green);text-decoration:underline;text-underline-offset:6px}main{max-width:1180px;margin:auto;padding:32px 36px 70px}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:2px;color:#647467}.intro{display:grid;grid-template-columns:1.3fr 1fr;align-items:end;gap:40px;margin:14px 0 30px}h1{font:normal clamp(36px,5vw,65px)/1.08 Georgia,serif;letter-spacing:-2px;margin:8px 0}h1 em{color:var(--green);font-weight:normal}.intro p{max-width:380px;margin:0 0 8px;color:#66776a;font-size:14px}.game{border:1px solid #cdd4c5;border-radius:18px;overflow:hidden;background:#f3f1e8;box-shadow:0 14px 40px #24452d08}.game:fullscreen{background:var(--paper);display:flex;flex-direction:column;justify-content:center}.bar{display:flex;align-items:center;justify-content:space-between;padding:17px 27px;border-bottom:1px solid #d7d9cc;background:#f6f5ee}.bar b{font-weight:500;font-size:14px}.bar span{font-size:12px;color:#687b6e}.board-wrap{position:relative;margin:12px 16px 0}canvas{display:block;width:100%;height:auto}.bolt-controls{position:absolute;inset:0}.bolt{position:absolute;border:0;background:transparent;border-radius:14px}.bolt:hover{background:#34694508}.bolt.selected{outline:1px solid #43785755;outline-offset:2px}.controls{padding:18px 26px 20px;display:flex;gap:9px;flex-wrap:wrap;border-top:1px solid #daddd0}button.small{border:1px solid #c4cdbc;border-radius:7px;padding:9px 15px;background:#faf9f4;font-size:13px;color:var(--ink)}button.primary{background:var(--green);color:white;border-color:var(--green)}.controls #share{margin-left:auto}.status{font-size:13px;padding:0 26px 22px;color:#596d5e;min-height:48px}.win{padding:15px 26px;background:#dcead6;color:#245435;font-size:15px}.win[hidden]{display:none}.notes{display:grid;grid-template-columns:1fr 1fr 1fr;gap:40px;margin:38px 0 44px}.notes h2{font:normal 21px Georgia}.notes p{font-size:13px;color:#647369}.number{font-size:11px;color:#ba7c4e;letter-spacing:2px}.guide{border-top:1px solid var(--line);padding-top:22px}.guide h2{font:normal 28px Georgia}.guide p,.guide li{font-size:14px;color:#66756b;max-width:850px}.related{display:flex;gap:24px;flex-wrap:wrap;font-size:13px;text-decoration:underline;text-underline-offset:4px;margin:26px 0}footer{border-top:1px solid var(--line);font-size:11px;color:#687a6c;display:flex;justify-content:space-between;gap:20px;padding:24px 0}footer a{text-decoration:underline}details{border-top:1px solid var(--line);padding:16px 0;font-size:14px}summary{cursor:pointer}details p{font-size:13px;color:#66766b}[hidden]{display:none!important}@media(max-width:650px){header{padding:20px}nav{gap:15px;font-size:11px}.brand{font-size:15px}main{padding:25px 18px 40px}.intro{grid-template-columns:1fr;gap:14px;margin-bottom:24px}h1{letter-spacing:-1px}.intro p{max-width:none}.bar{padding:14px 16px}.board-wrap{margin:8px 6px 0}.controls{padding:16px;gap:7px}.controls #share{margin-left:0}button.small{padding:9px 11px}.status{padding:0 16px 16px}.notes{grid-template-columns:1fr;gap:15px;margin:25px 0}.notes h2{margin:3px 0}.notes p{margin:7px 0}footer{flex-direction:column;gap:8px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}