*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0a0a14;--bg-secondary: #12122a;--bg-card: #1a1a3e;--bg-cell: #1e1e46;--bg-cell-hover: #2a2a5e;--bg-cell-found: rgba(34, 197, 94, .12);--border: #2a2a50;--border-active: #6366f1;--text-primary: #e8ecf4;--text-secondary: #8892b0;--text-muted: #5a6480;--accent: #6366f1;--accent-light: #818cf8;--success: #22c55e;--danger: #ef4444;--warning: #f59e0b;--radius: 12px;--radius-sm: 8px;--transition: .2s ease}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:24px 16px;max-width:1100px;margin:0 auto}.app-header{text-align:center;padding:16px 0 24px}.app-title{font-size:2rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;justify-content:center;gap:8px;letter-spacing:-.5px}.title-icon{font-size:2rem}.app-subtitle{margin-top:8px;color:var(--text-secondary);font-size:.95rem;letter-spacing:.3px}.app-main{display:flex;gap:24px;width:100%;align-items:flex-start;justify-content:center}.game-section{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;gap:16px;min-width:360px}.side-panel{flex:0 0 280px;display:flex;flex-direction:column;gap:16px}.app-footer{margin-top:auto;padding:32px 0 16px;text-align:center;color:var(--text-muted);font-size:.85rem}.timer-bar{width:100%;max-width:400px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;display:flex;flex-direction:column;gap:10px}.timer-main{display:flex;justify-content:center}.timer-display{display:flex;align-items:center;gap:8px;font-size:1.5rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary)}.timer-display.timer-finished{color:var(--success)}.timer-icon{font-size:1.2rem}.timer-value{letter-spacing:1px}.timer-stats{display:flex;justify-content:center;gap:20px}.stat-item{display:flex;flex-direction:column;align-items:center;gap:2px}.stat-label{font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:.9rem;font-weight:600;color:var(--text-secondary);font-variant-numeric:tabular-nums}.stat-value.stat-warning{color:var(--warning);animation:pulse-warning .4s ease}@keyframes pulse-warning{0%,to{color:var(--text-secondary)}50%{color:var(--danger)}}.board-placeholder{width:380px;height:380px;background:var(--bg-card);border:2px dashed var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;text-align:center}.placeholder-content{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-secondary)}.placeholder-icon{font-size:3rem;margin-bottom:4px}.placeholder-hint{font-size:.85rem;color:var(--text-muted)}.game-board{display:grid;gap:6px;padding:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);width:400px;height:400px}.game-board.shuffling .cell:not(.found){animation:cellShuffle .35s ease}@keyframes cellShuffle{0%{transform:scale(1)}30%{transform:scale(.85);opacity:.6}to{transform:scale(1);opacity:1}}.cell{position:relative;background:var(--bg-cell);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition);user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;aspect-ratio:1}.cell:hover:not(.found):not(:disabled){background:var(--bg-cell-hover);border-color:var(--border-active);transform:translateY(-1px);box-shadow:0 4px 12px #6366f126}.cell:active:not(.found):not(:disabled){transform:scale(.95)}.cell-number{font-size:1.1rem;font-weight:700;color:var(--text-primary);pointer-events:none;transition:all var(--transition)}.cell.found{background:var(--bg-cell-found);border-color:#22c55e40;cursor:default}.cell.found .cell-number{color:var(--success)}.cell.target{border-color:var(--accent-light);box-shadow:0 0 12px #6366f14d,inset 0 0 12px #6366f114}.cell.target .cell-number{color:var(--accent-light);animation:targetPulse 1.5s ease-in-out infinite}@keyframes targetPulse{0%,to{text-shadow:0 0 8px rgba(129,140,248,.4)}50%{text-shadow:0 0 16px rgba(129,140,248,.8)}}.cell.just-clicked{animation:clickPop .3s ease}@keyframes clickPop{0%{transform:scale(1)}40%{transform:scale(1.15)}to{transform:scale(1)}}.cell.wrong-click{animation:wrongShake .4s ease;border-color:var(--danger);background:#ef444426}@keyframes wrongShake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-3px)}80%{transform:translate(3px)}}.cell.finished{border-color:#22c55e66;background:var(--bg-cell-found)}.controls{width:100%;max-width:400px;display:flex;justify-content:center;min-height:48px}.btn-start,.btn-stop{padding:12px 36px;border:none;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);letter-spacing:.5px}.btn-start{background:var(--accent);color:#fff;box-shadow:0 4px 16px #6366f159}.btn-start:hover{background:var(--accent-light);transform:translateY(-1px);box-shadow:0 6px 20px #6366f173}.btn-start:active{transform:scale(.97)}.btn-stop{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-stop:hover{border-color:var(--danger);color:var(--danger)}.finish-panel{display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);width:100%}.finish-congrats{font-size:1.3rem;font-weight:700}.finish-time{font-size:2rem;font-weight:800;color:var(--success);font-variant-numeric:tabular-nums;letter-spacing:1px;animation:fadeInUp .5s ease}.finish-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;font-size:.85rem;color:var(--text-secondary)}.finish-stats span{background:var(--bg-secondary);padding:4px 10px;border-radius:20px;border:1px solid var(--border)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.settings-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.settings-panel h3{font-size:.9rem;font-weight:600;color:var(--text-primary);margin-bottom:14px}.setting-group{margin-bottom:16px}.setting-group:last-child{margin-bottom:0}.setting-label{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:var(--text-secondary);margin-bottom:8px}.setting-value{color:var(--accent-light);font-weight:600;font-size:.8rem}.toggle-group{display:flex;gap:6px}.toggle-btn{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-secondary);color:var(--text-secondary);font-size:.85rem;cursor:pointer;transition:all var(--transition)}.toggle-btn:hover:not(:disabled){border-color:var(--border-active);color:var(--text-primary)}.toggle-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.toggle-btn:disabled{opacity:.5;cursor:not-allowed}.range-slider{width:100%;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:6px;background:var(--bg-secondary);border-radius:3px;outline:none;margin-bottom:4px}.range-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;transition:all var(--transition);border:2px solid var(--bg-card)}.range-slider::-webkit-slider-thumb:hover{background:var(--accent-light);transform:scale(1.1)}.range-slider:disabled::-webkit-slider-thumb{opacity:.5;cursor:not-allowed}.range-labels{display:flex;justify-content:space-between;font-size:.65rem;color:var(--text-muted)}.history-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.history-header h3{font-size:.9rem;font-weight:600;color:var(--text-primary)}.btn-clear{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);font-size:.75rem;padding:4px 10px;cursor:pointer;transition:all var(--transition)}.btn-clear:hover{border-color:var(--danger);color:var(--danger)}.best-time{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:#f59e0b1a;border:1px solid rgba(245,158,11,.2);border-radius:var(--radius-sm);margin-bottom:10px}.best-label{font-size:.8rem;color:var(--warning);font-weight:500}.best-value{font-size:1rem;font-weight:700;color:var(--warning);font-variant-numeric:tabular-nums}.history-empty{text-align:center;color:var(--text-muted);font-size:.85rem;padding:16px 0}.history-list{display:flex;flex-direction:column;gap:6px;max-height:360px;overflow-y:auto}.history-item{display:flex;align-items:center;gap:8px;padding:8px 10px;background:var(--bg-secondary);border-radius:var(--radius-sm);border:1px solid var(--border);transition:all var(--transition);cursor:default}.history-item.is-best{border-color:#f59e0b4d;background:#f59e0b0d}.history-time{font-size:.95rem;font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums;min-width:56px}.history-meta{display:flex;gap:6px;flex-wrap:wrap;flex:1}.history-meta span{font-size:.7rem;padding:2px 6px;border-radius:4px}.history-mode{background:#6366f126;color:var(--accent-light)}.history-size{background:#8892b01a;color:var(--text-muted)}.history-interval{background:#22c55e1a;color:var(--success)}.history-date{font-size:.7rem;color:var(--text-muted);white-space:nowrap}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media(max-width:800px){.app-main{flex-direction:column;align-items:center}.side-panel{flex:0 0 auto;width:100%;max-width:400px}.game-board,.board-placeholder{width:min(380px,calc(100vw - 32px));height:min(380px,calc(100vw - 32px))}.cell-number{font-size:.95rem}}