:root{--bg-deep:#0c0f1a;--bg-main:#1a1a2e;--bg-panel:#161f38;--bg-card:#1e2b48;--bg-input:#232d48;--border:#2a3a5e;--border-hl:#3a4a7e;--gold:#f0d060;--gold-mid:#d4a84a;--gold-dim:#c0943a;--gold-glow:#c0943a40;--text:#e0e8f0;--text-dim:#7a8fae;--text-muted:#3a4a6e;--success:#4caf50;--warning:#ff9800;--danger:#ef5350;--radius-sm:6px;--radius:10px;--radius-lg:16px;--shadow:0 4px 24px #0009;--shadow-sm:0 2px 8px #00000059;--transition:.2s ease}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-main);color:var(--text);background-image:radial-gradient(80% 50% at 15% 0,#5050c812 0%,#0000 60%),radial-gradient(70% 50% at 85% 100%,#c0943a0f 0%,#0000 60%);flex-direction:column;align-items:center;min-height:100vh;font-family:Segoe UI,Noto Sans TC,system-ui,sans-serif;display:flex}h1{color:var(--gold);text-shadow:0 0 24px #f0d06059,0 2px 6px #00000080;letter-spacing:3px;margin:18px 0 8px;font-size:28px;font-weight:700}.game-container{flex-wrap:nowrap;justify-content:center;align-items:flex-start;gap:16px;width:100%;padding:8px 16px;display:flex}.panel{background:var(--bg-panel);border-radius:var(--radius-lg);border:1px solid var(--border);width:240px;min-width:200px;box-shadow:var(--shadow), inset 0 1px 0 #ffffff0a;flex-shrink:0;padding:16px;position:relative}.panel:before{content:"";background:linear-gradient(90deg,#0000,#c0943a73,#0000);border-radius:1px;height:1px;position:absolute;top:0;left:16px;right:16px}.panel h3{color:var(--gold);letter-spacing:1px;text-transform:uppercase;border-bottom:1px solid var(--border);margin-top:18px;margin-bottom:14px;padding-bottom:10px;font-size:13px;font-weight:700}.panel h3:first-child{margin-top:0}.board-wrapper{flex-direction:column;align-items:center;display:flex;position:relative}canvas{cursor:pointer;border-radius:var(--radius);touch-action:manipulation;max-width:100%;display:block;box-shadow:0 8px 32px #000000a6,0 0 0 1px #c0943a2e,0 0 48px #c0943a12}.control-group{margin-bottom:12px}.control-group label{text-transform:uppercase;letter-spacing:.8px;color:var(--text-dim);margin-bottom:5px;font-size:11px;font-weight:600;display:block}select,button{border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;width:100%;transition:background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);padding:8px 12px;font-family:inherit;font-size:13px}select{background:var(--bg-input);color:var(--text);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%237a8fae' d='M5 6L0 0h10z'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;outline:none;padding-right:28px}select:focus{border-color:var(--gold-dim);outline:none}button{background:var(--bg-input);color:var(--text);margin-bottom:6px;font-weight:500}button:hover{background:var(--border-hl);border-color:var(--border-hl)}button:active{transform:scale(.97)}button.primary{background:linear-gradient(135deg, var(--gold-dim) 0%, var(--gold-mid) 100%);color:#1a1a2e;box-shadow:0 2px 12px var(--gold-glow);letter-spacing:.5px;border:none;font-weight:700}button.primary:hover{background:linear-gradient(135deg, var(--gold-mid) 0%, var(--gold) 100%);box-shadow:0 4px 20px #c0943a80}button.danger{color:#faa;background:#78282880;border-color:#963c3c99}button.danger:hover{background:#963c3cb3;border-color:#b45050cc}.toggle-row{justify-content:space-between;align-items:center;margin-bottom:4px;padding:5px 2px;display:flex}.toggle-row span{color:var(--text-dim);font-size:13px}.toggle{flex-shrink:0;width:44px;height:24px;position:relative}.toggle input{display:none}.toggle .slider{background:var(--bg-input);border:1px solid var(--border);cursor:pointer;border-radius:12px;transition:background .3s,border-color .3s;position:absolute;inset:0}.toggle .slider:before{content:"";background:var(--text-dim);border-radius:50%;width:17px;height:17px;transition:transform .25s cubic-bezier(.4,0,.2,1),background .3s;position:absolute;top:3px;left:3px;box-shadow:0 1px 4px #0006}.toggle input:checked+.slider{background:var(--gold-dim);border-color:var(--gold-dim)}.toggle input:checked+.slider:before{background:#fff;transform:translate(20px)}.info-row{border-radius:var(--radius-sm);justify-content:space-between;align-items:center;padding:7px 8px;font-size:13px;display:flex}.info-row:nth-child(2n){background:#ffffff06}.info-row .label{color:var(--text-dim)}.info-row .value{font-variant-numeric:tabular-nums;font-size:16px;font-weight:700}.black-indicator{color:#d0d8e8}.white-indicator{color:#fff}.current-turn{text-align:center;border-radius:var(--radius);background:var(--bg-card);border:1px solid var(--border);color:var(--text-dim);letter-spacing:.5px;margin:10px 0;padding:11px 14px;font-size:14px;font-weight:700;transition:all .3s}.current-turn.black{color:#eee;background:linear-gradient(135deg,#252525 0%,#181818 100%);border-color:#3a3a3a;box-shadow:0 2px 12px #00000080,inset 0 1px #ffffff0f}.current-turn.white{color:#2a2218;background:linear-gradient(135deg,#ede5d5 0%,#d8cfbe 100%);border-color:#c8c0b0;box-shadow:0 2px 12px #d2be9633}.timer-display{text-align:center;background:var(--bg-deep);border:1px solid var(--border);border-radius:var(--radius-sm);letter-spacing:3px;color:var(--gold);font-variant-numeric:tabular-nums;margin:4px 0 10px;padding:10px;font-family:Courier New,monospace;font-size:22px}.timer-display.urgent{color:var(--danger);border-color:#ef535066;animation:.6s ease-in-out infinite timerBlink}@keyframes timerBlink{0%,to{opacity:1}50%{opacity:.45}}.review-controls{gap:6px;margin-top:8px;display:flex}.review-controls button{background:var(--bg-card);flex:1;min-height:44px;padding:10px 4px;font-size:18px}.review-controls button:hover{background:var(--border-hl);color:var(--gold);border-color:var(--border-hl)}.move-info{text-align:center;color:var(--text-dim);margin-top:6px;padding:4px 0;font-size:12px}.scoring-panel{background:var(--bg-card);border-radius:var(--radius);border:1px solid #c0943a73;margin-top:12px;padding:14px;box-shadow:0 0 20px #c0943a14}.scoring-panel h4{color:var(--gold);text-align:center;letter-spacing:.8px;text-transform:uppercase;margin-bottom:10px;font-size:13px}.score-row{justify-content:space-between;padding:5px 0;font-size:13px;display:flex}.status-msg{text-align:center;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border);min-height:40px;color:var(--text-dim);justify-content:center;align-items:center;margin:10px 0;padding:10px 12px;font-size:13px;line-height:1.4;transition:border-color .3s,color .3s;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(6px);z-index:100;background:#000000b8;justify-content:center;align-items:center;display:none;position:fixed;inset:0}.modal-overlay.show{display:flex}.modal{background:var(--bg-panel);border-radius:var(--radius-lg);text-align:center;border:1px solid #c0943a66;width:90%;max-width:360px;padding:34px 30px;animation:.28s cubic-bezier(.34,1.5,.64,1) modalIn;position:relative;box-shadow:0 20px 60px #000000b3,0 0 80px #c0943a14}.modal:before{content:"";background:linear-gradient(90deg, transparent, var(--gold-dim), transparent);border-radius:1px;height:2px;position:absolute;top:0;left:20%;right:20%}@keyframes modalIn{0%{opacity:0;transform:scale(.88)translateY(16px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal h2{color:var(--gold);letter-spacing:1px;margin-bottom:14px;font-size:20px}.modal p{margin-bottom:8px;font-size:15px}.modal button{margin-top:14px}.mobile-menu-btn{z-index:200;background:linear-gradient(135deg, var(--gold-dim), var(--gold-mid));color:#1a1a2e;cursor:pointer;width:44px;height:44px;box-shadow:0 3px 14px var(--gold-glow);border:none;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:20px;line-height:1;display:none;position:fixed;top:12px;right:12px}.mobile-menu-btn:hover{box-shadow:0 4px 20px #c0943a80}.sidebar-overlay{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:300;background:#00000080;display:none;position:fixed;inset:0}.sidebar-overlay.open{display:block}.sidebar{background:var(--bg-panel);border-left:1px solid var(--border);z-index:301;width:280px;height:100%;padding:60px 16px 16px;transition:right .3s cubic-bezier(.4,0,.2,1);position:fixed;top:0;right:-300px;overflow-y:auto;box-shadow:-8px 0 40px #00000080}.sidebar.open{right:0}.sidebar-close{background:var(--bg-input);width:40px;height:40px;color:var(--text-dim);border:1px solid var(--border);cursor:pointer;text-align:center;transition:all var(--transition);border-radius:50%;padding:0;font-size:17px;line-height:40px;position:absolute;top:12px;right:12px}.sidebar-close:hover{background:var(--border-hl);color:var(--text);border-color:var(--border-hl)}.mobile-info-bar{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);justify-content:space-between;align-items:center;gap:8px;width:100%;max-width:500px;margin-bottom:6px;padding:8px 14px;font-size:12px;display:none}.mobile-info-bar .turn-badge{border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text-dim);padding:4px 12px;font-size:12px;font-weight:700}.mobile-info-bar .turn-badge.black{color:#eee;background:#1e1e1e}.mobile-info-bar .turn-badge.white{color:#222;background:#ece4d4}.mobile-info-bar .info-item{color:var(--text-muted)}.mobile-info-bar .info-item span{color:var(--text);font-weight:700}.mobile-action-bar{gap:6px;width:100%;max-width:500px;margin-top:6px;display:none}.mobile-action-bar button{background:var(--bg-card);border-color:var(--border);flex:1;min-height:44px;padding:12px 4px;font-size:12px}.mobile-status{text-align:center;width:100%;max-width:500px;color:var(--text-dim);min-height:20px;padding:4px 0;font-size:12px;display:none}#aiThinkingOverlay{-webkit-backdrop-filter:blur(1px);backdrop-filter:blur(1px);border-radius:var(--radius);pointer-events:none;z-index:10;background:#0c0f1aad;flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex;position:absolute;inset:0}#aiThinkingOverlay:before{content:"";border:3px solid #c0943a26;border-top-color:var(--gold-dim);border-right-color:#c0943a80;border-radius:50%;width:38px;height:38px;animation:.85s linear infinite aiSpin}#aiThinkingOverlay:after{content:"AI 思考中";color:var(--gold-dim);letter-spacing:2px;text-transform:uppercase;font-size:12px;font-weight:700;animation:1.4s ease-in-out infinite aiPulse}@keyframes aiSpin{to{transform:rotate(360deg)}}@keyframes aiPulse{0%,to{opacity:.55}50%{opacity:1}}.guidance-tooltip{background:var(--bg-panel);color:var(--gold);border-radius:var(--radius-sm);pointer-events:none;white-space:nowrap;z-index:50;box-shadow:var(--shadow-sm);letter-spacing:.3px;border:1px solid #c0943a80;padding:6px 12px;font-size:12px;font-weight:700;position:absolute}@media (width<=900px){h1{letter-spacing:2px;margin:10px 0 6px;font-size:20px}.mobile-menu-btn{display:flex}.game-container{flex-wrap:nowrap;justify-content:center;padding:6px 8px}.panel{display:none}.board-wrapper{align-items:center;width:100%;padding:0}.mobile-info-bar,.mobile-action-bar{display:flex}.mobile-status{display:block}}.analysis-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-top:12px;padding:14px}.analysis-title{color:var(--gold);text-align:center;letter-spacing:.8px;margin-bottom:10px;font-size:13px}.analysis-progress{margin-bottom:10px}.analysis-progress-track{background:var(--border);border-radius:4px;height:7px;overflow:hidden}.analysis-progress-fill{background:linear-gradient(90deg, var(--gold-dim), var(--gold-mid));border-radius:4px;width:0%;height:100%;transition:width .3s}.analysis-progress-text{color:var(--text-dim);text-align:center;margin-top:5px;font-size:12px}.count-good{color:var(--success);font-weight:700}.count-warn{color:var(--warning);font-weight:700}.count-bad{color:var(--danger);font-weight:700}.analysis-move-info{color:var(--text-dim);text-align:center;margin-top:8px;font-size:13px}.guidance-legend{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:500px;color:var(--text);margin-top:8px;padding:10px 14px;font-size:13px;line-height:1.6}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:var(--bg-panel)}::-webkit-scrollbar-thumb{background:var(--border-hl);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-dim)}.version-footer{text-align:center;width:100%;color:var(--text-muted);letter-spacing:.5px;padding:10px 16px 18px;font-size:11px}