@import "https://fonts.googleapis.com/css2?family=DM+Mono&family=Outfit:wght@400;500;600;700&display=swap";:root{color:#fff;font-synthesis:none;text-rendering:optimizelegibility;background:#0d0917;font-family:Outfit,system-ui,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 50% -10%,#3d2764 0,#140d25 31%,#0d0917 70%);min-width:320px;min-height:100svh;margin:0}button{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline-offset:3px;outline:2px solid #79ffdc}.app-shell{width:min(100%,560px);min-height:100svh;margin:auto;padding:22px 20px 28px}.topbar{justify-content:space-between;align-items:center;display:flex}.brand{color:#f7f6ff;letter-spacing:.12em;font:700 1.28rem/1 Outfit,sans-serif;text-decoration:none}.brand span,.eyebrow{color:#79ffdc;text-shadow:0 0 16px #00ffc880}.tag,.eyebrow,footer,.status{letter-spacing:.13em;font:.7rem DM Mono,monospace}.tag{color:#a99cc8;border:1px solid #564c70;border-radius:99px;padding:6px 8px}.intro{margin:clamp(44px,9vh,72px) 4px 27px}.eyebrow{margin:0 0 10px}.intro h1{color:#fff;letter-spacing:-.055em;margin:0;font:600 clamp(2.15rem,10vw,3.35rem)/.99 Outfit,sans-serif}.intro em{color:#bb91ff;text-shadow:0 0 28px #9c5cff66;font-style:normal}.rules{color:#b9b3c9;margin:18px 0 0;font-size:.91rem;line-height:1.6}.game{background:linear-gradient(145deg,#211a35cc,#120f20cc);border:1px solid #38304d;border-radius:22px;padding:14px;box-shadow:0 18px 65px #07050f99}.level-picker,.actions{gap:7px;display:grid}.level-picker{grid-template-columns:repeat(3,1fr);margin-bottom:14px}.level-picker button,.actions button{cursor:pointer;border:0;font:500 .8rem Outfit,sans-serif}.level-picker button{color:#a79cbb;background:0 0;border-radius:10px;padding:10px 4px}.level-picker .active{color:#12101b;background:#79ffdc;box-shadow:0 0 20px #79ffdc5c}.board-frame{background:#0e0a19;border-radius:15px;padding:7px;position:relative;box-shadow:inset 0 0 0 1px #3c3450}.board{gap:5px;display:grid}.cell{aspect-ratio:1;cursor:pointer;background:#171126;border:1px solid #332b48;border-radius:9px;place-items:center;min-width:0;display:grid}.cell:active{transform:scale(.91)}.mark{display:none}.zero .mark{border:4px solid #78ffe0;border-radius:50%;width:64%;height:64%;display:block;box-shadow:0 0 14px #00ffc699}.one .mark{background:#c69bff;border-radius:999px;width:27%;height:66%;display:block;box-shadow:0 0 14px #a664ff99}.fixed{background:#251d37}.mistake{background:#3c1830;border-color:#ff6e9a;box-shadow:inset 0 0 0 1px #ff6e9a,0 0 12px #ff4f8d66}.win{color:#fff;text-align:center;background:#120b22df;border-radius:15px;place-content:center;gap:7px;font:600 1.05rem Outfit,sans-serif;display:grid;position:absolute;inset:0}.win span{color:#79ffdc;font-size:2.6rem}.status{color:#b9b0ca;text-align:center;min-height:1.4em;margin:14px 5px}.actions{grid-template-columns:1fr 1.4fr}.actions button,.reveal-errors,.new-puzzle{cursor:pointer;border:0;border-radius:12px;min-height:48px;font:500 .8rem Outfit,sans-serif}.ghost{color:#d6cfeb;background:#282038}.primary{color:#0e0b19;background:#bb91ff;box-shadow:0 7px 22px #a664ff52}.new-puzzle{color:#79ffdc;background:#172d31;border:1px solid #3d7e73;width:100%;margin-top:9px}.reveal-errors{color:#ffb4ca;background:#3b1930;border:1px solid #ff6e9a;width:100%;margin-top:9px}footer{color:#746c85;text-align:center;margin:27px 0 0}@media (width>=620px){.app-shell{padding-top:30px}.game{padding:18px}.board{gap:7px}}