.lab-hero{max-width:880px;margin:0 auto 24px}.lab-hero h1{margin:0 0 8px;font-size:clamp(30px,5vw,48px);line-height:1.08}.lab-hero p{color:var(--text-muted);font-size:16px;line-height:1.7}.lab-shell{max-width:1080px;margin:0 auto}.lab-panel{padding:18px;border:1px solid var(--border);border-radius:16px;background:var(--bg-card)}.lab-toolbar{display:flex;flex-wrap:wrap;align-items:end;gap:10px;margin-bottom:14px}.lab-field label{display:block;margin-bottom:4px;color:var(--text-muted);font-size:10px;font-weight:800;text-transform:uppercase}.lab-field input,.lab-field select{min-height:38px;padding:7px 10px;border:1px solid var(--border);border-radius:8px;background:var(--bg-dark);color:var(--text-primary)}.lab-status{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.lab-chip{padding:7px 10px;border:1px solid var(--border);border-radius:999px;background:var(--bg-hover);font-size:12px;font-weight:750}.lab-board-wrap{overflow:auto;max-width:100%;padding:10px;border:1px solid var(--border);border-radius:12px;background:#080d18}.lab-board{display:grid;gap:2px;width:max-content;touch-action:manipulation}.lab-cell{display:flex;align-items:center;justify-content:center;width:30px;height:30px;padding:0;border:1px solid #475569;border-radius:4px;background:#263247;color:#e2e8f0;font-size:14px;font-weight:900;cursor:pointer;user-select:none}.lab-cell:hover{background:#334155}.lab-cell:focus-visible{outline:3px solid #facc15;outline-offset:1px;z-index:2}.lab-cell.revealed{background:#0f172a;border-color:#263247;cursor:default}.lab-cell.flagged{color:#fb7185}.lab-cell.mine{background:#7f1d1d;color:#fecaca}.lab-cell.n1{color:#60a5fa}.lab-cell.n2{color:#4ade80}.lab-cell.n3{color:#f87171}.lab-cell.n4{color:#a78bfa}.lab-cell.n5{color:#fb7185}.lab-cell.n6{color:#2dd4bf}.lab-cell.n7{color:#f8fafc}.lab-cell.n8{color:#94a3b8}.lab-cell.creator-mine{background:#7f1d1d;color:#fff}.lab-mode[aria-pressed=true]{background:#7c3aed;color:#fff}.lab-grid-2{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.6fr);gap:16px}.lab-copy{max-width:850px;margin:32px auto}.lab-copy h2{margin:30px 0 10px}.lab-copy p,.lab-copy li{color:var(--text-muted);line-height:1.75}.lab-callout{padding:14px 16px;border-left:3px solid #8b5cf6;border-radius:8px;background:rgba(139,92,246,.08)}.lab-pan{display:grid;grid-template-columns:repeat(3,42px);gap:5px;width:max-content}.lab-pan button{min-height:38px}.lab-pan .up{grid-column:2}.lab-pan .left{grid-column:1}.lab-pan .home{grid-column:2}.lab-pan .right{grid-column:3}.lab-pan .down{grid-column:2}.print-sheet{background:#fff;color:#111;padding:24px}.print-grid{display:grid;gap:0;width:max-content;margin:18px 0;border:2px solid #111}.print-cell{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border:1px solid #777;font-size:11px;font-weight:700}.print-solution .print-cell.mine:after{content:'●'}.source-list{display:grid;gap:10px}.source-list a{color:var(--accent-light)}
@media(max-width:760px){.lab-grid-2{grid-template-columns:1fr}.lab-panel{padding:13px}.lab-cell{width:28px;height:28px}.lab-toolbar .btn{flex:1}}
@media print{body *{visibility:hidden}.print-sheet,.print-sheet *{visibility:visible}.print-sheet{position:absolute;inset:0;padding:10mm}.no-print{display:none!important}}