*{margin:0;padding:0;box-sizing:border-box}body{overflow:hidden;background:linear-gradient(135deg,#1a2f1a,#0d1f0d,#051005);font-family:Segoe UI,Microsoft YaHei,sans-serif;color:#e8f5e8}canvas{display:block;position:fixed;top:0;left:0;z-index:1}#ui{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:100}#hud{position:absolute;top:0;left:0;right:0;padding:16px 24px}#hud-top{display:flex;justify-content:space-between;align-items:flex-start}#hud-left,#hud-center,#hud-right{display:flex;flex-direction:column;gap:8px}#hud-center{align-items:center}#hud-right{align-items:flex-end}#gold-display{font-size:24px;font-weight:700;color:gold;text-shadow:0 0 10px rgba(255,215,0,.5)}#base-hp{font-size:20px;color:#ff6b6b;text-shadow:0 0 8px rgba(255,107,107,.5)}#wave-info{font-size:18px;color:#87ceeb;font-weight:700}#wave-name{font-size:14px;color:#b0c4de}#enemies-remaining{font-size:16px;color:plum}.hud-btn{padding:8px 16px;font-size:14px;background:linear-gradient(145deg,#4a9eff,#2e7dd3);border:none;border-radius:6px;color:#fff;cursor:pointer;pointer-events:auto;transition:all .2s}.hud-btn:hover{transform:translateY(-2px);filter:brightness(1.1)}.hud-btn:disabled{background:#555;cursor:not-allowed;opacity:.6}#tower-panel{position:absolute;left:20px;top:50%;transform:translateY(-50%);background:#0a1e0aeb;border:1px solid rgba(100,200,100,.3);border-radius:12px;padding:16px;width:220px;pointer-events:auto;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.panel-title{font-size:16px;font-weight:700;color:#90ee90;text-align:center;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid rgba(100,200,100,.2)}#tower-list{display:flex;flex-direction:column;gap:10px}.tower-card{display:flex;gap:12px;padding:10px;background:#ffffff0d;border-radius:8px;cursor:pointer;transition:all .2s;border:2px solid transparent}.tower-card:hover{background:#ffffff1a;transform:translate(4px)}.tower-card.selected{border-color:#90ee90;background:#90ee9026}.tower-card.disabled{opacity:.5;cursor:not-allowed}.tower-icon{width:48px;height:48px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}.tower-info{flex:1}.tower-name{font-size:14px;font-weight:700;color:#fff}.tower-cost{font-size:12px;color:gold;margin-top:2px}.tower-desc{font-size:11px;color:#aaa;margin-top:4px}.panel-hint{font-size:12px;color:#888;text-align:center;margin-top:12px;font-style:italic}#tower-info-panel{position:absolute;right:20px;top:50%;transform:translateY(-50%);background:#0a1e0aeb;border:1px solid rgba(100,200,100,.3);border-radius:12px;padding:16px;width:200px;pointer-events:auto}#selected-tower-details{margin-bottom:12px}#tower-info-panel button{width:100%;padding:8px;margin-top:8px;font-size:14px;border:none;border-radius:6px;cursor:pointer;pointer-events:auto;transition:all .2s}#sell-tower-btn{background:linear-gradient(145deg,#ff6b6b,#ee5a5a);color:#fff}#close-info-btn{background:#ffffff1a;color:#ccc}#tower-info-panel button:hover{filter:brightness(1.15)}#wave-title{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;animation:waveFade 2.5s ease-in-out forwards;pointer-events:none}#wave-title-text{font-size:48px;color:#90ee90;text-shadow:0 0 20px rgba(144,238,144,.5)}#wave-subtitle{font-size:20px;color:#b0c4de;margin-top:8px}@keyframes waveFade{0%{opacity:0;transform:translate(-50%,-50%) scale(.8)}15%{opacity:1;transform:translate(-50%,-50%) scale(1)}75%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(1.05)}}#start-screen{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;background:linear-gradient(160deg,#0a280af2,#051405eb);padding:50px 70px;border-radius:20px;pointer-events:auto;border:1px solid rgba(100,200,100,.3);box-shadow:0 12px 40px #00000080}#start-screen h1{font-size:42px;color:#90ee90;text-shadow:0 0 20px rgba(144,238,144,.5);margin-bottom:4px}#start-screen .subtitle{font-size:18px;color:#7cb97c;margin-bottom:24px;letter-spacing:2px}#start-screen .description{font-size:16px;color:#b0c4de;margin-bottom:20px;line-height:1.6;white-space:pre-line}#start-screen .controls{display:flex;flex-direction:column;gap:8px;margin-bottom:28px;padding:16px;background:#ffffff0d;border-radius:10px;font-size:14px;color:#999}#start-btn{padding:14px 40px;font-size:20px;border:none;border-radius:10px;background:linear-gradient(145deg,#4caf50,#388e3c);color:#fff;cursor:pointer;font-weight:700;transition:all .2s}#start-btn:hover{transform:translateY(-2px);filter:brightness(1.15);box-shadow:0 4px 20px #4caf5066}#victory,#game-over{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;background:linear-gradient(160deg,#0a280af2,#051405eb);padding:40px 60px;border-radius:16px;pointer-events:auto;border:1px solid rgba(100,200,100,.3)}#victory h1{font-size:42px;color:gold;text-shadow:0 0 20px rgba(255,215,0,.5);margin-bottom:12px}#game-over h1{font-size:42px;color:#ff6b6b;text-shadow:0 0 20px rgba(255,107,107,.5);margin-bottom:12px}#victory p,#game-over p{font-size:18px;color:#b0c4de;margin-bottom:8px}#victory-score,#game-over-score{font-size:24px;color:gold;font-weight:700;margin:16px 0 24px}#victory-restart,#game-over-retry,#game-over-restart{padding:12px 28px;font-size:16px;border:none;border-radius:8px;cursor:pointer;font-weight:700;transition:all .2s;margin:0 6px}#victory-restart,#game-over-retry{background:linear-gradient(145deg,#4caf50,#388e3c);color:#fff}#game-over-restart{background:linear-gradient(145deg,#ff6b6b,#ee5a5a);color:#fff}#victory-restart:hover,#game-over-retry:hover,#game-over-restart:hover{transform:translateY(-2px);filter:brightness(1.15)}#float-text-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.float-text{position:absolute;font-size:18px;font-weight:700;text-shadow:0 0 10px rgba(0,0,0,.8);animation:floatUp 1s ease-out forwards;pointer-events:none;transform:translate(-50%)}.float-text.gold{color:gold}.float-text.damage{color:#ff6b6b}.float-text.heal{color:#90ee90}@keyframes floatUp{0%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(-40px)}}#difficulty-screen{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;background:linear-gradient(160deg,#0a280af2,#051405eb);padding:40px 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transparent}.difficulty-card:hover{background:#ffffff1a;transform:translateY(-3px)}.difficulty-card.selected{border-color:#90ee90;background:#90ee9026}.diff-icon{font-size:32px;margin-bottom:8px}.diff-name{font-size:16px;font-weight:700;color:#fff;margin-bottom:4px}.diff-desc{font-size:11px;color:#888}#tutorial-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000b3;pointer-events:auto;z-index:100;display:flex;align-items:center;justify-content:center}#tutorial-box{background:linear-gradient(160deg,#143c14fa,#0a1e0af2);padding:30px 40px;border-radius:16px;border:2px solid #90ee90;text-align:center;max-width:400px;box-shadow:0 0 30px #90ee904d}#tutorial-step-text{font-size:20px;color:#fff;margin-bottom:12px}#tutorial-hint{font-size:14px;color:#90ee90;margin-bottom:20px}#tutorial-box button{padding:10px 20px;font-size:14px;border:none;border-radius:6px;cursor:pointer;margin:0 6px;transition:all .2s}#tutorial-next-btn{background:linear-gradient(145deg,#4caf50,#388e3c);color:#fff}#tutorial-skip-btn{background:#ffffff1a;color:#888}#tutorial-box button:hover{filter:brightness(1.15)}#skill-card-panel{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#0a1e0af2;border:1px solid rgba(100,200,100,.3);border-radius:12px;padding:20px;pointer-events:auto;z-index:50}#skill-card-panel .panel-title{text-align:center;margin-bottom:16px}#skill-card-list{display:flex;gap:12px;margin-bottom:16px}.skill-card{width:120px;padding:16px 12px;background:#ffffff14;border-radius:10px;cursor:pointer;transition:all .2s;border:2px solid transparent;text-align:center}.skill-card:hover{background:#90ee9033;border-color:#90ee90;transform:translateY(-3px)}.skill-icon{font-size:32px;margin-bottom:8px}.skill-name{font-size:14px;font-weight:700;color:#fff;margin-bottom:4px}.skill-desc{font-size:11px;color:#aaa}#skill-card-skip-btn{width:100%;background:#ffffff1a;color:#888}#wave-complete-modal{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:200;pointer-events:auto}#wave-complete-modal .modal-content{background:linear-gradient(160deg,#143c14fa,#0a1e0af2);padding:30px 40px;border-radius:16px;border:2px solid #90ee90;text-align:center;min-width:320px;box-shadow:0 0 40px #90ee9066}.modal-icon{font-size:48px;margin-bottom:12px}.modal-title{font-size:24px;font-weight:700;color:#90ee90;margin-bottom:20px}.modal-stats{background:#0000004d;border-radius:10px;padding:16px;margin-bottom:20px}.stat-row{display:flex;justify-content:space-between;font-size:16px;color:#ccc;padding:6px 0}.stat-row span:last-child{color:gold;font-weight:700}.modal-buttons{display:flex;gap:12px;justify-content:center}.modal-buttons button{padding:12px 24px;font-size:16px}#modal-continue-btn{background:linear-gradient(145deg,#4caf50,#388e3c);color:#fff}#modal-menu-btn{background:#ffffff1a;color:#888}.hidden{display:none!important}#lang-switch{position:absolute;bottom:16px;right:24px;display:flex;gap:8px;pointer-events:auto;z-index:1000}.lang-btn{padding:6px 14px;font-size:13px;font-weight:700;border:2px solid rgba(144,238,144,.5);border-radius:6px;background:#0a1e0acc;color:#90ee90;cursor:pointer;transition:all .2s;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.lang-btn:hover{background:#90ee9033;border-color:#90ee90}.lang-btn.active{background:linear-gradient(145deg,#4caf50,#388e3c);color:#fff;border-color:#4caf50}#camera-controls{display:flex;gap:4px;align-items:center}.cam-btn{padding:5px 10px;font-size:12px;font-weight:700;border:1px solid rgba(135,206,235,.4);border-radius:5px;background:#0a1e32bf;color:#87ceeb;cursor:pointer;pointer-events:auto;transition:all .15s;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);letter-spacing:.5px}.cam-btn:hover{background:#87ceeb33;border-color:#87ceeb;transform:translateY(-1px)}.cam-btn.active{background:linear-gradient(145deg,#2980b9,#1a5276);color:#fff;border-color:#87ceeb;box-shadow:0 0 8px #87ceeb66}