:root{--neon-blue: #00f3ff;--neon-purple: #bc13fe;--neon-red: #ff2a2a;--bg-dark: #0a0a16}*{box-sizing:border-box;margin:0;padding:0;-webkit-user-select:none;user-select:none}body{background-color:#000;font-family:PingFang SC,Microsoft YaHei,sans-serif;overflow:hidden;touch-action:none}.game-wrapper{width:100vw;height:100vh;display:flex;justify-content:center;align-items:center;background:radial-gradient(circle at center,#1a1a2e,#05050a);position:relative}.cloud-badge{position:absolute;top:16px;left:16px;background:#00f3ff1a;color:var(--neon-blue);padding:6px 16px;border-radius:20px;font-size:.9rem;font-weight:700;border:1px solid rgba(0,243,255,.3);box-shadow:0 0 10px #00f3ff33;z-index:100}.game-container{width:100%;max-width:400px;height:100%;max-height:600px;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><circle cx="50" cy="50" r="1" fill="%23ffffff33"/></svg>') repeat;background-color:var(--bg-dark);position:relative;overflow:hidden;box-shadow:0 0 30px #bc13fe33,inset 0 0 20px #00f3ff1a;border:1px solid rgba(188,19,254,.3);border-radius:12px;animation:bgScroll 20s linear infinite}@keyframes bgScroll{0%{background-position:0 0}to{background-position:0 600px}}.screen-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#0a0a16d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:50}.neon-title{font-size:3rem;font-weight:900;color:#fff;text-shadow:0 0 10px var(--neon-blue),0 0 20px var(--neon-blue),0 0 40px var(--neon-purple);margin-bottom:30px;letter-spacing:4px}.high-score-display{display:flex;align-items:center;gap:8px;font-size:1.2rem;color:gold;margin-bottom:40px;text-shadow:0 0 10px rgba(255,215,0,.5)}.icon-gold{filter:drop-shadow(0 0 5px #ffd700)}.btn-primary{background:linear-gradient(45deg,var(--neon-blue),var(--neon-purple));color:#fff;border:none;padding:14px 32px;border-radius:30px;font-size:1.2rem;font-weight:700;display:flex;align-items:center;gap:10px;cursor:pointer;box-shadow:0 0 15px #bc13fe80;transition:transform .2s,box-shadow .2s}.btn-primary:hover{transform:scale(1.05);box-shadow:0 0 25px #00f3ffcc}.btn-primary:active{transform:scale(.95)}.controls-hint{color:#ffffff80;margin-top:20px;font-size:.9rem}.hud{position:absolute;top:0;left:0;width:100%;padding:15px 20px;display:flex;justify-content:space-between;align-items:flex-start;z-index:40;pointer-events:none}.score-display{font-size:2rem;font-weight:900;color:var(--neon-blue);text-shadow:0 0 10px var(--neon-blue);font-family:monospace}.lives-display{display:flex;gap:5px}.life-active{filter:drop-shadow(0 0 5px var(--neon-red))}.life-lost{color:#fff3}.level-display{font-size:1.2rem;font-weight:700;color:var(--neon-purple);text-shadow:0 0 10px var(--neon-purple)}.entity{position:absolute;top:0;left:0;display:flex;justify-content:center;align-items:center;will-change:transform;pointer-events:none}.entity img{width:100%;height:100%;object-fit:contain}.fallback-emoji{font-size:2.5rem;line-height:1}.player{width:50px;height:50px;z-index:30;filter:drop-shadow(0 0 10px var(--neon-blue))}.enemy{z-index:20}.enemy.basic{filter:drop-shadow(0 0 8px var(--neon-red))}.enemy.fast{filter:drop-shadow(0 0 10px #ffaa00)}.enemy.tank{filter:drop-shadow(0 0 15px var(--neon-purple))}.bullet{position:absolute;top:0;left:0;width:6px;height:20px;background:#fff;border-radius:3px;z-index:10;box-shadow:0 0 10px var(--neon-blue),0 0 20px var(--neon-blue);will-change:transform;pointer-events:none}.explosion{width:60px;height:60px;z-index:35}.gameover-title{font-size:3rem;font-weight:900;color:var(--neon-red);text-shadow:0 0 20px var(--neon-red);margin-bottom:20px}.final-score{font-size:1.5rem;color:#fff;margin-bottom:10px}.new-record{color:gold;font-weight:700;font-size:1.2rem;animation:pulse 1s infinite alternate;margin-bottom:20px}.mt-6{margin-top:24px}@keyframes pulse{0%{transform:scale(1);opacity:.8}to{transform:scale(1.1);opacity:1}}