:root {
  --paper:#f7f5f0;--ink:#20263b;--muted:#667084;--stroke:#e3e4ec;--violet:#5d54d5;
  --violet-light:#e2ddff;--orange:#ffb994;--mint:#bde9d5;--white:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:radial-gradient(circle at 92% 0%,#ede8ff 0%,transparent 38%),radial-gradient(circle at 0% 50%,#fce7d8 0%,transparent 32%),var(--paper);font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink)}
button,select{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.43;cursor:not-allowed;box-shadow:none}
a{color:inherit}
.shell{width:min(1120px,calc(100% - 34px));margin:auto}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:22px 0 10px}
.brand{text-decoration:none;display:inline-flex;align-items:center;gap:9px;font-weight:880;letter-spacing:-.055em;font-size:1.35rem}
.brand .spark{display:grid;place-items:center;background:#d5cbff;width:34px;height:34px;border-radius:11px;font-size:1.25rem}
.back{color:#555c73;text-decoration:none;font-size:.9rem;font-weight:750}
.back:hover{text-decoration:underline}
.intro{padding:35px 0 31px;display:flex;justify-content:space-between;align-items:end;gap:18px}
.kicker{display:inline-flex;background:#d1f0dd;border-radius:99px;padding:6px 13px;text-transform:uppercase;letter-spacing:.08em;font-size:.73rem;font-weight:850}
h1{font-size:clamp(2.9rem,7vw,5.3rem);letter-spacing:-.075em;line-height:1;margin:17px 0 12px}
.lead{color:var(--muted);font-size:1.07rem;margin:0;max-width:610px}
.mini-doodle{font-size:clamp(2.5rem,7vw,5rem);transform:rotate(-12deg);background:#ffd1b6;border-radius:29px;padding:3px 21px;line-height:1.3;box-shadow:7px 7px 0 #20263b}
.layout{display:grid;grid-template-columns:minmax(0,1.48fr) minmax(280px,.84fr);gap:23px;align-items:start;padding-bottom:60px}
.card{background:#fff;border:1px solid #e7e6e3;border-radius:27px;box-shadow:0 15px 45px #20263b0c}
.game-card{padding:26px}
.game-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:19px}
.game-header h2{margin:0;font-size:1.55rem;letter-spacing:-.045em}
.small-label{display:block;font-size:.71rem;text-transform:uppercase;letter-spacing:.085em;font-weight:850;color:#80869b;margin-bottom:3px}
.meta{margin:3px 0 0;font-size:.82rem;color:var(--muted)}
.selector{background:#f6f4ff;border:1px solid #dfdaf7;border-radius:12px;padding:11px 32px 11px 12px;color:#343452;font-weight:800;max-width:198px}
.stats{display:flex;flex-wrap:wrap;gap:9px;margin:0 0 20px}
.stat{flex:1;min-width:102px;background:#f7f8fb;border-radius:14px;padding:10px 13px}
.stat strong{display:block;font-variant-numeric:tabular-nums;font-size:1.16rem;font-weight:850;letter-spacing:-.025em}
.board-wrap{max-width:530px;margin:0 auto}
.board{--n:4;width:100%;aspect-ratio:1;display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));grid-template-rows:repeat(var(--n),minmax(0,1fr));border:3px solid #2c314e;border-radius:18px;overflow:hidden;position:relative;background:#edf1f9;touch-action:none;user-select:none;-webkit-user-select:none;cursor:crosshair;outline-offset:4px}
.board:focus-visible{outline:3px solid #ee955f}
.cell{position:relative;display:grid;place-items:center;min-width:0;min-height:0;border:1px solid #d8dce9;background:#fcfcff}
.cell.alt{background:#f6f7ff}
.cell.visited{background:#ece9ff}
.cell.visited.alt{background:#e9e5ff}
.cell.wall-right::before{content:"";position:absolute;right:-3px;top:-1px;bottom:-1px;width:6px;background:#30304d;z-index:5;border-radius:2px;pointer-events:none}
.cell.wall-bottom::after{content:"";position:absolute;bottom:-3px;left:-1px;right:-1px;height:6px;background:#30304d;z-index:5;border-radius:2px;pointer-events:none}
.checkpoint{position:relative;z-index:6;display:grid;place-items:center;border-radius:50%;width:52%;aspect-ratio:1;min-width:22px;max-width:51px;background:#fff;border:2.5px solid #4037b0;box-shadow:0 2px 0 #bbb3ed;color:#383090;font-size:clamp(.8rem,2.5vw,1.3rem);font-weight:900;line-height:1}
.checkpoint.reached{background:#35317f;border-color:#fff;color:#fff;box-shadow:0 2px 0 #29235f}
.trail{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2;overflow:visible}
.trail polyline{stroke:#8179ef}
.board.solved .trail polyline{stroke:#25aa88}
.game-footer{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:16px 0 15px;color:#616980;font-size:.87rem;font-weight:760}
.progress{height:8px;width:100%;background:#e9eaf0;border-radius:50px;overflow:hidden;margin-bottom:18px}
.progress span{height:100%;width:0;display:block;background:linear-gradient(90deg,#7c74ed,#5147be);border-radius:inherit;transition:width .15s}
.actions{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.action{border-radius:13px;border:1px solid #dadbe8;background:#fff;padding:13px 5px;font-weight:800;color:#313651;transition:background .14s,transform .14s;touch-action:manipulation}
.action:hover:not(:disabled){background:#f5f3ff;transform:translateY(-1px)}
.action.primary{background:#2e3150;color:#fff;border-color:#2e3150}
.action.primary:hover:not(:disabled){background:#505276}
.status{min-height:22px;text-align:center;color:var(--muted);font-size:.81rem;margin:14px 0 0}
.side{display:grid;gap:18px}
.side .card{padding:24px}
.side h2{font-size:1.22rem;margin:0 0 16px;letter-spacing:-.035em}
.rule{display:grid;grid-template-columns:28px 1fr;gap:13px;align-items:start;margin-bottom:17px}
.rule:last-child{margin-bottom:0}
.rule-number{display:grid;place-items:center;background:#eeeaff;color:#4940ad;border-radius:9px;width:27px;height:27px;font-size:.8rem;font-weight:900}
.rule strong{display:block;font-size:.94rem}
.rule p{color:var(--muted);font-size:.87rem;margin:2px 0 0}
.help-card{background:#eaf4ef!important;border-color:#d6e9dd!important}
.help-card h2{margin-bottom:7px}
.help-card p{margin:0;color:#4b685b;font-size:.91rem}
.tiny-list{display:grid;gap:12px;margin-top:18px}
.tiny-row{display:flex;justify-content:space-between;gap:12px;font-size:.88rem}
.tiny-row span{color:var(--muted)}
.tiny-row strong{font-variant-numeric:tabular-nums}
.win-banner{margin-top:21px;padding:20px 19px;border-radius:18px;background:#ede9ff;border:1px solid #d4cbff}
.win-banner[hidden]{display:none}
.win-banner h3{font-size:1.32rem;margin:0 0 4px;letter-spacing:-.035em}
.win-banner p{margin:0 0 15px;color:#4f5372;font-size:.9rem}
.win-buttons{display:flex;gap:10px;flex-wrap:wrap}
.win-buttons button{border-radius:10px;padding:11px 15px;font-weight:850;border:1px solid #5b52c8;color:#fff;background:#5b52c8}
.win-buttons button.secondary{background:transparent;color:#4e47aa}
.toast{position:fixed;bottom:23px;left:50%;transform:translate(-50%,20px);background:#2f3150;color:#fff;padding:11px 17px;border-radius:12px;box-shadow:0 10px 28px #20263b35;z-index:30;opacity:0;pointer-events:none;transition:transform .2s,opacity .2s;font-size:.88rem;font-weight:700;text-align:center;width:max-content;max-width:calc(100vw - 30px)}
.toast.visible{opacity:1;transform:translate(-50%,0)}
.foot{padding:12px 0 32px;border-top:1px solid #e5e3df;display:flex;justify-content:space-between;gap:12px;color:#797c8d;font-size:.8rem}
@media(max-width:850px){.layout{grid-template-columns:1fr}.side{grid-template-columns:1fr 1fr}.board-wrap{max-width:520px}}
@media(max-width:580px){.topbar{padding-top:17px}.intro{padding:29px 0 24px}.intro .mini-doodle{display:none}.layout{gap:17px}.game-card{padding:15px;border-radius:21px}.game-header{gap:8px}.game-header h2{font-size:1.3rem}.selector{font-size:.81rem;max-width:165px;padding:10px 23px 10px 6px}.stat{padding:9px;min-width:0}.stat strong{font-size:1.05rem}.side{grid-template-columns:1fr}.side .card{padding:21px}.board{border-width:2px}.checkpoint{border-width:2px;font-size:clamp(.78rem,3.2vw,1.1rem)}.action{font-size:.89rem}.foot{display:block}.foot span{display:block;margin:5px 0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.game-nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.footer-links{display:flex;align-items:center;flex-wrap:wrap;gap:13px}
.footer-links a{text-decoration:none;color:inherit}
.footer-links a:hover{text-decoration:underline}

.storage-choice{display:flex;align-items:flex-start;gap:10px;padding-top:15px;margin-top:15px;border-top:1px solid #d7e9dc;cursor:pointer}.storage-choice input{width:19px;height:19px;margin-top:2px;flex-shrink:0;accent-color:#4d44b5}.storage-choice strong{display:block;color:#2e5140;font-size:.89rem}.storage-choice small{display:block;color:#506b5e;font-size:.78rem;line-height:1.45;margin-top:4px}.storage-choice a{text-decoration:underline}