*{box-sizing:border-box}body{margin:0;background:#f5f2ea;color:#253745;font:15px/1.6 system-ui,sans-serif}main{max-width:1150px;margin:auto;padding:30px 38px}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #dcdcd3;padding-bottom:19px;font-size:12px;color:#647482}.brand{font-weight:800;text-decoration:none;color:#213a4e;font-size:21px;letter-spacing:2px}.brand span{font-size:10px;letter-spacing:1.5px;font-weight:500;margin-left:15px}#saved{background:#e5e9e3;padding:6px 13px;border-radius:20px}.intro{padding:34px 0 28px}.eyebrow{font-size:10px;letter-spacing:2.3px;font-weight:750;color:#7a827a;margin:0 0 9px}h1{font:52px/1.1 Georgia,serif;margin:0;color:#19394e}h1 em{color:#b67a29;font-size:42px;font-weight:400}h1 span{display:block;font:italic 21px Georgia,serif;margin-top:12px;color:#77857c}.intro>p:last-child{color:#657580;margin:17px 0 0}.layout{display:grid;grid-template-columns:minmax(0,640px) 280px;gap:50px;align-items:start}.game{background:#fffdf8;border:1px solid #dedfd5;border-radius:18px;box-shadow:0 12px 40px #233a4910;overflow:hidden}.toolbar{display:flex;align-items:center;gap:12px;padding:18px 23px;border-bottom:1px solid #e7e8de}.toolbar label{font-size:10px;letter-spacing:1.5px;color:#738174;font-weight:750}.toolbar select{max-width:60%;border:0;background:#f0f1e9;border-radius:7px;padding:7px;color:#283f4e;font:inherit;font-size:13px}.toolbar>span{margin-left:auto;color:#8c968f;font-size:12px}.board-wrap{max-width:520px;margin:22px auto 0;padding:0 16px}.board-row{display:flex;align-items:stretch;gap:7px}#board{display:grid;grid-template-columns:repeat(var(--n),1fr);gap:5px;width:100%;padding:8px;background:#e7e9df;border:1px solid #d7dacc;border-radius:12px}button{font:inherit;cursor:pointer}#board button{position:relative;aspect-ratio:1;border:1px solid #d9ddd4;background:#f9faf4;border-radius:7px;padding:0;line-height:1;font-family:Georgia,serif;font-size:clamp(15px,3vw,30px);color:#aeb5a9;transition:background .15s,transform .15s,box-shadow .15s}#board button:hover{transform:translateY(-1px);box-shadow:0 3px 7px #19394e25}#board button.day{background:#f2ce76;border-color:#d8b05b;color:#805417}#board button.night{background:#223e54;border-color:#183449;color:#f9f5d5}#board button.fixed:after{content:'•';position:absolute;bottom:2px;right:5px;font-size:12px;opacity:.6}#board button.bad{box-shadow:inset 0 0 0 3px #d96358}#board button:focus-visible{outline:3px solid #db7353;outline-offset:2px;z-index:1}#cols{display:grid;grid-template-columns:repeat(var(--n),1fr);padding:0 8px;margin:0 35px 5px 0;font-size:9px;color:#738174;text-align:center}#rows{display:grid;grid-template-rows:repeat(var(--n),1fr);width:28px;flex-shrink:0;font-size:9px;color:#738174;padding:8px 0}#rows span{align-self:center;text-align:center}.count-good{color:#43846d!important}.count-bad{color:#bc4f43!important}.legend{display:flex;justify-content:center;gap:8px;align-items:center;margin:14px 0;font-size:11px;color:#7b857d}.sun{color:#ad7e2b;font-size:19px}.moon{color:#263f55;font-size:22px;margin-left:12px}.fixed-dot{font-size:9px;margin-left:12px}#message{margin:0 22px;padding:10px 13px;min-height:45px;font-size:12px;background:#eef1e8;border-radius:8px;color:#566d60}#message.error{background:#f9e9e1;color:#a34a36}#message.win{background:#d9ede1;color:#256545;font-weight:700}.actions{display:flex;gap:8px;padding:17px 22px 22px}.actions button{border:1px solid #d8dfd3;background:#fffdf8;border-radius:7px;padding:8px 12px;font-size:12px;color:#455d4b}.actions button:last-child{margin-left:auto;background:#234b42;color:white;border-color:#234b42}.actions button:disabled{opacity:.4;cursor:default}aside{padding-top:12px}ol{list-style:none;padding:0;margin:0;counter-reset:rules}li{position:relative;padding:6px 0 12px 34px;counter-increment:rules}li:before{content:'0' counter(rules);position:absolute;left:0;top:6px;font:15px Georgia,serif;color:#bc9455}li b{font:20px Georgia,serif;color:#294a53}li p{font-size:13px;color:#748177;line-height:1.6;margin:8px 0}.how{border-top:1px solid #d8ded0;padding-top:20px;margin-top:9px;font-size:12px;color:#6c7f73}.how>b{color:#3e5b4c}.how small{font-size:11px;display:block}kbd{font:10px system-ui;background:#e5e8de;padding:2px 3px;border-radius:3px}footer{border-top:1px solid #dce0d4;margin-top:35px;padding-top:18px;font-size:10px;color:#859087}footer a{color:#687c6b}footer span{display:block;margin-top:4px}@media(max-width:800px){main{padding:20px}.layout{gap:28px;grid-template-columns:1fr}aside{max-width:600px}h1{font-size:44px}.intro{padding:27px 0}.brand span{font-size:8px;margin-left:6px}.toolbar{padding:13px;gap:8px}.toolbar label{font-size:8px}.toolbar select{font-size:11px}#board{gap:3px;padding:5px}#board button{border-radius:4px}.actions{padding:14px 12px;gap:6px}.actions button{padding:8px;font-size:11px}.board-wrap{padding:0 12px}#message{margin:0 12px}#cols{font-size:8px}#rows{font-size:8px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
body{background:#f2f2ed;color:#24424b}.intro h1{color:#214f5d}.intro h1 em{color:#c57c52}.brand{color:#214f5d}#saved{background:#e0e9e7;white-space:nowrap}.game{background:#fffefa}.board-wrap{max-width:520px;padding:0 20px;margin-top:24px}#board{position:relative;gap:0;padding:0;border:2px solid #3f6970;border-radius:4px;background:#e9eeeb;overflow:hidden;touch-action:none;user-select:none}#board button{border:1px solid #d6dfd9;border-radius:0;background:#f8f9f4;color:#325d65;padding:0;font:600 clamp(14px,2.5vw,25px)/1 system-ui;transform:none!important;box-shadow:none!important;transition:background .12s}#board button:hover{background:#e6eddf}#board button.parcel{background:var(--tone)}#board button.top{border-top:2px solid #3d6b70}#board button.bottom{border-bottom:2px solid #3d6b70}#board button.left{border-left:2px solid #3d6b70}#board button.right{border-right:2px solid #3d6b70}#board button.bad{background:#fbe0d8;border-color:#cc765e}#board button.preview{background:#dce6b9;box-shadow:inset 0 0 0 2px #8ea658!important}#board button.anchor:after{content:'';position:absolute;inset:5px;border:2px dashed #527a47;border-radius:3px}#board button:focus-visible{outline:none;box-shadow:inset 0 0 0 3px #c17e4e!important;z-index:2}.tools{display:flex;align-items:center;gap:8px;margin:13px 22px 0}.tools button{border:1px solid #d4ded7;background:#f1f4ed;color:#547064;border-radius:6px;padding:6px 9px;font-size:11px}.tools span{margin-left:auto;font-size:10px;color:#839180;text-align:right}.mini{display:grid;grid-template-columns:repeat(3,1fr);width:156px;border:2px solid #3d6b70;border-radius:4px;overflow:hidden}.mini span{height:36px;border:1px solid #bad3c3;background:#d5e7d7;padding:3px 8px;font-size:18px;color:#35635a}.example{border:1px solid #d5dfd6;border-radius:12px;padding:18px;margin-top:12px}.example p{font-size:11px;color:#6b8478;margin:10px 0 0}.actions button:last-child{background:#245563;border-color:#245563}.legend{font-size:12px;margin:12px}.intro h1 span{color:#7e8c85}@media(max-width:500px){main{padding:16px}.brand span{font-size:6px;letter-spacing:1px}.brand{font-size:18px}#saved{font-size:10px;padding:5px 9px}.intro h1{font-size:40px}.intro h1 em{font-size:34px}.board-wrap{padding:0 12px}.toolbar label{font-size:7px}.toolbar select{max-width:64%;font-size:10px}.tools{margin:12px;gap:5px}.tools button{font-size:10px;padding:6px}.tools span{font-size:9px}#board button.anchor:after{inset:3px}.actions button{font-size:10px}.layout{gap:22px}}