@font-face{font-family:system;src:local('Arial')}*{box-sizing:border-box} :root{color-scheme:dark;--bg:#101318;--panel:#191d24;--line:#2c323b;--muted:#9ba4b4;--ink:#edf0f5;--mint:#b5f5cc;--yellow:#f4ca69}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;border:0;background:none;touch-action:manipulation}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid var(--mint);outline-offset:4px}button:hover:not(:disabled){filter:brightness(1.15)}.shell{max-width:1220px;padding:30px 44px 20px;margin:auto}header{display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:13px;color:var(--ink);text-decoration:none;font-size:27px;letter-spacing:5px;font-weight:750}.brand svg{width:30px;height:34px;fill:none;stroke:var(--mint);stroke-width:1.8}.brand span{font-size:11px;letter-spacing:2.1px;color:var(--muted);font-weight:500;margin-left:14px}.icon-button{border:1px solid var(--line);border-radius:50%;width:38px;height:38px;font-size:20px}nav{display:flex;gap:28px;border-bottom:1px solid var(--line);margin-top:32px}.tab{padding:13px 0 17px;color:var(--muted);font-size:15px;position:relative}.tab.active{color:var(--mint)}.tab.active:after{content:'';position:absolute;bottom:-1px;left:0;right:0;background:var(--mint);height:2px}.tab span{font-size:12px;background:#272e38;padding:2px 6px;border-radius:5px;margin-left:5px}main{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:40px;margin-top:32px}.level-heading{display:flex;align-items:center;justify-content:space-between}.eyebrow{font-size:11px;letter-spacing:1.7px;font-weight:650;color:var(--muted);margin:0 0 7px}h1{font-size:32px;line-height:1.2;letter-spacing:-1px;font-weight:550;margin:0}.level-tag{font-size:12px;border:1px solid #354c40;color:var(--mint);padding:5px 10px;border-radius:20px}.stats{display:flex;gap:23px;color:var(--muted);font-size:13px;margin-top:16px}.stats b{color:var(--ink);font-weight:500}.stats>span:last-child{margin-left:auto;font-variant-numeric:tabular-nums}.board{position:relative;height:450px;overflow:hidden;border-radius:16px;background:radial-gradient(ellipse at 50% 47%,#242e36 0,#171d25 47%,#141920 80%);margin-top:19px;border:1px solid #242c35}.board:after{content:'';pointer-events:none;position:absolute;bottom:70px;left:25%;width:50%;height:22px;border-radius:50%;background:#0005;filter:blur(17px);z-index:0}canvas{width:100%;height:100%;display:block;position:relative;z-index:1;touch-action:none}.board-top{position:absolute;top:18px;left:18px;right:18px;display:flex;justify-content:space-between;z-index:2;pointer-events:none}.board-top button{pointer-events:auto}.board-chip{font-size:11px;letter-spacing:.3px;color:#afbac9;display:flex;align-items:center;gap:6px}.board-chip i{width:5px;height:5px;background:var(--mint);border-radius:50%}.small-button{font-size:12px;color:var(--muted);padding:0 0 0 8px}.rotation-hint{position:absolute;bottom:18px;left:12px;right:12px;text-align:center;font-size:12px;color:var(--muted);z-index:2;pointer-events:none}.toolbar{display:flex;justify-content:center;gap:8px;margin:15px 0}.toolbar button{font-size:13px;padding:8px 18px;border-radius:8px;background:#1b2129;min-height:42px}.toolbar button span{font-size:19px;margin-right:7px;color:#b9c4d4}.face-control{display:flex;gap:16px;align-items:center;justify-content:center;font-size:12px;color:var(--muted)}#face-buttons{display:flex;gap:5px}#face-buttons button{width:30px;height:30px;border:1px solid var(--line);border-radius:6px;font-size:12px}aside{padding-top:2px}.panel{padding:23px;background:var(--panel);border:1px solid var(--line);border-radius:13px;margin-bottom:18px}.panel h2{font-size:20px;line-height:1.3;margin:3px 0 10px;font-weight:550}.panel p{font-size:14px;color:var(--muted);margin:0 0 18px}.progress-track{height:4px;background:#343d45;border-radius:3px;margin:19px 0 8px;overflow:hidden}.progress-track div{height:100%;background:var(--mint);transition:width .5s}.progress-caption{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.level-details{border-top:1px solid var(--line);margin:21px 0 17px;padding-top:10px}.detail{display:flex;justify-content:space-between;font-size:13px;padding:6px 0;color:var(--muted)}.detail b{font-weight:500;color:var(--ink)}.seed{font-family:ui-monospace,monospace;font-size:12px;overflow-wrap:anywhere}.primary{display:flex;width:100%;justify-content:space-between;align-items:center;background:var(--mint);color:#15291e;border-radius:8px;font-size:14px;font-weight:650;padding:13px 16px}.rules{background:transparent;padding-top:20px}.rules .eyebrow{font-size:10px;letter-spacing:1px}.rule{display:flex;gap:12px;margin-top:20px;align-items:flex-start}.rule-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:29px;height:29px;border:1px solid var(--line);border-radius:7px;font-size:23px;color:#abb9cb}.mint{color:var(--mint)}.yellow{color:var(--yellow)}.rule p{font-size:13px;margin:0;color:#dee3eb}.rule small{display:block;font-size:12px;color:var(--muted);line-height:1.5;margin-top:4px}.local-note{display:flex;gap:10px;color:var(--muted);padding:0 6px}.local-note p{font-size:12px;margin:0}footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:30px;padding-top:17px;font-size:12px;color:var(--muted)}footer button{font-size:12px}label{display:block;font-size:13px;color:var(--muted);margin-top:17px}label output{float:right;color:var(--ink)}input[type=range]{width:100%;accent-color:var(--mint);margin:12px 0 0}input[type=text]{background:#11161c;border:1px solid #3a4350;border-radius:7px;padding:10px;width:100%;color:var(--ink);font-size:14px;margin-top:8px}.form-buttons{margin-top:21px}.text-button{display:block;color:var(--muted);font-size:13px;padding:12px;margin:auto}.win{position:absolute;inset:0;z-index:5;background:#111820eF;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:35px;text-align:center;backdrop-filter:blur(8px)}[hidden]{display:none!important}.win-symbol{font-size:60px;color:var(--mint)}.win h2{font-size:32px;margin:8px 0}.win p{color:var(--muted);font-size:14px}.win .primary{max-width:270px}.win .eyebrow{margin:10px 0 0}dialog{background:#1a2029;color:var(--ink);border:1px solid #3a4655;border-radius:18px;width:min(540px,calc(100% - 28px));padding:25px;max-height:85dvh}dialog::backdrop{background:#060a10c9;backdrop-filter:blur(5px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:18px}.dialog-heading h2{font-size:23px;margin:0}#modal-body p,#modal-body li{font-size:14px;color:#b9c4d2;line-height:1.7}#modal-body ol{padding-left:22px}.history-row{border-top:1px solid var(--line);padding:16px 0}.history-row h3{font-size:16px;margin:0 0 6px}.history-row p{font-size:12px!important;margin:4px 0}.history-row button{border:1px solid #3e4a58;border-radius:6px;margin:9px 9px 0 0;padding:7px 11px;font-size:12px}#toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);max-width:calc(100% - 30px);background:var(--mint);color:#10251c;font-size:14px;padding:12px 20px;border-radius:10px;opacity:0;pointer-events:none;transition:.2s;z-index:20;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}.keyboard-arrows{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.keyboard-arrows button{border:1px solid var(--line);border-radius:6px;padding:8px}.help-note{border-left:2px solid var(--yellow);padding-left:12px}@media(min-width:1300px){.shell{padding-top:40px}.board{height:490px}}@media(max-width:850px){.shell{padding:22px 22px 18px}main{gap:23px;grid-template-columns:minmax(0,1fr) 250px}.panel{padding:18px}.brand span{display:none}.board{height:420px}.toolbar button{padding:8px 12px}}@media(max-width:660px){.shell{padding:calc(16px + env(safe-area-inset-top)) 18px calc(16px + env(safe-area-inset-bottom))}.brand{font-size:23px}.brand svg{width:25px;height:29px}nav{margin-top:19px;gap:25px}.tab{font-size:14px;padding-bottom:13px}main{display:block;margin-top:23px}h1{font-size:27px}.stats{margin-top:12px}.board{height:clamp(330px,52dvh,490px);margin-top:14px}.board-top{top:14px;left:13px;right:13px}.rotation-hint{font-size:11px}.toolbar{margin:12px 0}.toolbar button{flex:1;padding:8px}.face-control{margin-bottom:23px}aside{display:grid;grid-template-columns:1fr}.rules{display:none}.panel{margin-bottom:12px}.panel h2{font-size:19px}.level-details{margin:13px 0}.local-note{margin-top:7px}footer{margin-top:20px;font-size:11px}.level-tag{font-size:11px}.win h2{font-size:29px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.zoom-control{position:absolute;right:15px;bottom:46px;z-index:3;display:flex;align-items:center;background:#131a23e8;border:1px solid #3b4654;border-radius:10px;box-shadow:0 4px 16px #0003;overflow:hidden}.zoom-control button{min-width:38px;min-height:38px;font-size:21px;color:#dce7ed}.zoom-control #zoom-value{font-size:11px;min-width:49px;color:var(--muted);font-variant-numeric:tabular-nums}.zoom-control button+button{border-left:1px solid #303a47}canvas{cursor:grab}canvas:active{cursor:grabbing}