.chess-container{display:flex;flex-direction:column;width:100vw;height:100vh;background:radial-gradient(circle at center,#2c251e,#171310);color:#f3eade;font-family:PingFang SC,Microsoft YaHei,sans-serif;overflow:hidden}.chess-header{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background:#28201ad9;border-bottom:2px solid #523f31;box-shadow:0 4px 20px #00000080;z-index:10}.brand{display:flex;align-items:center;gap:10px}.brand h1{font-size:1.4rem;font-weight:700;color:#dfb78c;letter-spacing:2px;margin:0}.logo-icon{font-size:1.6rem}.controls{display:flex;align-items:center;gap:12px}.btn-icon{background:#3e3025;border:1px solid #5c4737;color:#dfb78c;padding:8px;border-radius:50%;cursor:pointer;transition:all .2s ease}.btn-icon:hover{background:#523f31;transform:scale(1.05)}.btn-icon.active{background:#b22222;border-color:#ff4d4d;color:#fff}.btn-action{display:flex;align-items:center;gap:6px;background:#3e3025;border:1px solid #5c4737;color:#dfb78c;padding:8px 16px;border-radius:6px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-action:hover:not(:disabled){background:#523f31;color:#fff}.btn-action:disabled{opacity:.4;cursor:not-allowed}.btn-action.primary{background:#8b1c1c;border-color:#b22222;color:#fff}.btn-action.primary:hover{background:#b22222}.chess-main{display:flex;flex:1;padding:20px;gap:24px;justify-content:center;align-items:center;position:relative}.side-panel{display:flex;flex-direction:column;justify-content:space-between;width:280px;height:520px}.player-card{display:flex;align-items:center;gap:14px;background:#2d241de6;border:1.5px solid #523f31;padding:16px;border-radius:12px}.player-card .avatar{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem}.black-side .avatar{background:#111;color:#fff;border:2px solid #555}.red-side .avatar{background:#8b1c1c;color:#fff;border:2px solid #ff4d4d}.player-card .info h3{margin:0 0 4px;font-size:1rem;color:#e6dcd0}.player-card .info p{margin:0;font-size:.85rem;color:#8c7a6b}.player-card .info p.active-turn{color:#4ade80;font-weight:700;animation:pulse 1.5s infinite}.ai-assistant{background:linear-gradient(135deg,#241d18,#1c1612);border:1.5px solid #dfb78c55;border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px;box-shadow:0 8px 24px #0006}.ai-header{display:flex;align-items:center;gap:8px;color:#dfb78c}.spark-icon{color:gold;animation:spin 4s linear infinite}.ai-bubble{background:#0000004d;border-radius:8px;padding:12px;min-height:80px;max-height:120px;overflow-y:auto;border-left:3px solid #dfb78c}.ai-bubble p{margin:0;font-size:.85rem;line-height:1.5;color:#e6dcd0}.btn-ai-ask{background:linear-gradient(90deg,#8b5a2b,#a06d3b);border:none;color:#fff;padding:10px;border-radius:6px;font-weight:700;cursor:pointer;transition:all .2s ease}.btn-ai-ask:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-1px)}.btn-ai-ask:disabled{opacity:.5;cursor:not-allowed}.board-wrapper{position:relative;width:480px;height:540px;background:#e9d7b7;border:12px solid #523f31;border-radius:8px;box-shadow:0 15px 40px #0009,inset 0 0 40px #00000026;padding:24px}.board{position:relative;width:100%;height:100%}.board-grid{position:absolute;width:100%;height:100%;pointer-events:none}.grid-line{position:absolute;background-color:#4a3525}.grid-line.horizontal{width:100%;height:2px}.grid-line.vertical{width:2px}.palace-diagonals{position:absolute;width:100%;height:100%;top:0;left:0}.palace-diagonals line{stroke:#4a3525;stroke-width:2}.river{position:absolute;top:44.44%;left:0;width:100%;height:11.11%;display:flex;justify-content:space-around;align-items:center;font-family:KaiTi,楷体,serif;font-size:1.6rem;font-weight:700;color:#4a3525;letter-spacing:12px}.pieces-layer{position:absolute;width:100%;height:100%;top:0;left:0}.piece{position:absolute;width:42px;height:42px;border-radius:50%;border:2px solid #222;background:#f4ebd9;box-shadow:0 4px 6px #0000004d,inset 0 -3px #0003;display:flex;align-items:center;justify-content:center;cursor:pointer;transform:translate(-50%,-50%);transition:transform .2s cubic-bezier(.175,.885,.32,1.275),box-shadow .2s ease;z-index:2}.piece:hover{transform:translate(-50%,-55%) scale(1.1);box-shadow:0 8px 12px #0006}.piece-inner{font-family:KaiTi,楷体,serif;font-size:1.5rem;font-weight:900}.piece.red{border-color:#8b1c1c;color:#8b1c1c}.piece.black{border-color:#111;color:#111}.piece.selected{border-color:gold;box-shadow:0 0 15px gold,inset 0 0 8px #ffd70080;animation:bounce .6s infinite alternate;z-index:5}.move-indicator{position:absolute;width:16px;height:16px;background:#4ade80d9;border:2.5px solid #fff;border-radius:50%;cursor:pointer;transform:translate(-50%,-50%);z-index:4;box-shadow:0 0 8px #0000004d;transition:transform .15s ease}.move-indicator:hover{transform:translate(-50%,-50%) scale(1.3);background:#22c55e}.winner-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000c;border-radius:8px;display:flex;align-items:center;justify-content:center;z-index:10;animation:fadeIn .3s ease-out}.winner-modal{text-align:center;color:#dfb78c;padding:24px}.trophy-icon{color:gold;margin-bottom:16px;animation:bounce 1s infinite alternate}.btn-restart-large{background:#8b1c1c;color:#fff;border:none;padding:12px 28px;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;margin-top:16px;transition:all .2s ease}.btn-restart-large:hover{background:#b22222;transform:scale(1.05)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes bounce{0%{transform:translate(-50%,-50%)}to{transform:translate(-50%,-60%)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}