:root{color-scheme:dark;--bg:#0a1423;--panel:#101f33;--line:#294058;--muted:#adbed0;--ink:#f0f6fc;--gold:#ffd16f;--blue:#71d4f2;--accent:#c7f3de}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 20% 15%,#1a334d 0,transparent 53%),var(--bg);color:var(--ink);font:16px/1.55 Arial,Helvetica,sans-serif;min-height:100vh}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:4px}button:disabled{opacity:.35;cursor:default}.app{max-width:1220px;margin:auto;padding:0 32px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:21px;font-weight:800;letter-spacing:-.6px}.brand b{font-weight:400;color:var(--muted)}.brand img{width:38px;height:38px;border-radius:12px}.top-actions{display:flex;align-items:center;gap:10px}.top-actions>a{font-size:14px;text-decoration:none;margin-right:10px}.top-actions button{background:transparent;border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:14px;min-height:40px}#help{width:40px}.heading{display:flex;align-items:flex-end;justify-content:space-between;padding:32px 0 24px}.eyebrow,.tiny{font-size:11px;letter-spacing:1.8px;font-weight:700;color:var(--accent)}.eyebrow{margin:0 0 10px}.heading h1{font-size:44px;letter-spacing:-1.8px;line-height:1.05;margin:0}.heading h1 span{display:inline-block;margin-left:18px;font-size:24px;font-weight:400;letter-spacing:-.6px;color:var(--muted)}.mission-count{text-align:right}.mission-count span{font-size:26px;font-variant-numeric:tabular-nums;letter-spacing:3px}.mission-count small{display:block;color:var(--muted);font-size:10px;letter-spacing:1.4px}.game-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.puzzle-panel{background:linear-gradient(145deg,#142840,#101d30);border:1px solid #314a65;border-radius:22px;overflow:hidden;box-shadow:0 25px 70px #0004}.panel-top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:20px 24px;border-bottom:1px solid var(--line)}.panel-top h2{margin:3px 0 0;font-size:20px;letter-spacing:-.4px}.status-chip{border:1px solid #63704f;background:#ffd16f10;color:var(--gold);font-size:12px;border-radius:99px;padding:6px 10px;white-space:nowrap}.board-zone{padding:15px 28px 12px;max-width:590px;margin:auto}.edge-labels{display:flex;justify-content:space-between;color:#91a9c1;font-size:10px;letter-spacing:1.5px;padding:0 0 10px}.board{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;position:relative;isolation:isolate}.tile{aspect-ratio:1;position:relative;padding:0;background:#102238;border:1px solid #2c4157;border-radius:10px;transition:background .2s,border-color .2s,box-shadow .2s;min-width:0;touch-action:manipulation;overflow:visible}.tile:hover{background:#203d57;border-color:#7292ad}.tile.empty{background:#0c1a2b;border-color:#213247;cursor:default}.tile svg{display:block;width:100%;height:100%;overflow:visible;pointer-events:none}.tile .tile-grid{stroke:#3c526e;stroke-width:.7;opacity:.4}.tile .path-base{fill:none;stroke-width:11;stroke-linecap:round;stroke-linejoin:round;opacity:.19}.tile .path-core{fill:none;stroke-width:4;stroke-linecap:round;stroke-linejoin:round;opacity:.35}.tile .gold-route{stroke:var(--gold)}.tile .blue-route{stroke:var(--blue)}.tile .flow{fill:none;stroke-width:2;stroke-linecap:round;stroke-dasharray:2 18;animation:flow 2s linear infinite;opacity:0}.tile .powered .path-core{opacity:1;filter:drop-shadow(0 0 4px currentColor)}.tile .powered .path-base{opacity:.3}.tile .powered .flow{opacity:1;stroke:#fff}.tile .gold-group{color:var(--gold)}.tile .blue-group{color:var(--blue)}.tile.connected{border-color:#477a83;background:#163044}.tile.hinted{outline:3px solid var(--accent);outline-offset:1px;z-index:3;animation:hintPulse 1s ease-in-out infinite alternate}.tile .origin-marker{fill:var(--gold);stroke:#142338;stroke-width:2}.tile .origin-marker.blue{fill:var(--blue)}.tile .turn-icon{position:absolute;right:4px;bottom:0px;color:#5c7590;font-size:12px;pointer-events:none}.tile .map-dot{fill:#5b7087}.tile .checkpoint{fill:#102238;stroke:#ccd8e5;stroke-width:1.5}.tile .checkpoint-label{fill:#e8f2fd;font-size:11px;font-weight:700;text-anchor:middle}.board[data-lens=gold] .blue-group,.board[data-lens=blue] 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