:root{--color-primary: #00ffff;--color-secondary: #0080ff;--color-warning: #ff3366;--color-energy: #ff9900;--color-holo: #00ff88;--color-ice: #e0f0ff;--color-purple: #c04bff;--bg-dark: #0a1628;--bg-darker: #050a14;--bg-card: rgba(10, 22, 40, .94);--bg-elevated: rgba(14, 30, 52, .97);--border-soft: rgba(0, 255, 255, .22);--border-strong: rgba(0, 255, 255, .55);--hud-height: 54px;--menu-height: 84px;--skill-height: 58px}*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:var(--bg-dark);color:var(--color-ice);font-family:Segoe UI,system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}button{font-family:inherit;touch-action:manipulation}.hidden{display:none!important}.screen{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;z-index:1000;background:radial-gradient(ellipse at center,#1a0a2e,#0a1628 70%)}.screen.active{display:flex}.loader-content{text-align:center}.game-title{font-size:clamp(2rem,9vw,4rem);font-weight:900;letter-spacing:.28em;color:var(--color-primary);text-shadow:0 0 10px var(--color-primary),0 0 34px rgba(0,255,255,.5);animation:glow-pulse 2s ease-in-out infinite alternate}.subtitle{margin-top:.55rem;font-size:clamp(.85rem,3vw,1.15rem);opacity:.7;letter-spacing:.2em}.loader-bar{width:200px;height:4px;margin:2rem auto 0;border-radius:2px;background:#00ffff2e;overflow:hidden}.loader-fill{width:40%;height:100%;border-radius:2px;background:linear-gradient(90deg,var(--color-secondary),var(--color-primary));box-shadow:0 0 10px var(--color-primary);animation:loader-slide 1.2s ease-in-out infinite}@keyframes loader-slide{0%{transform:translate(-110%)}to{transform:translate(260%)}}@keyframes glow-pulse{0%{text-shadow:0 0 10px var(--color-primary),0 0 30px rgba(0,255,255,.45)}to{text-shadow:0 0 20px var(--color-primary),0 0 62px rgba(0,255,255,.8)}}.game-container{display:flex;flex-direction:column;width:100%;height:100vh;height:100dvh}.hud-top{display:flex;align-items:center;justify-content:space-between;gap:8px;flex:0 0 auto;min-height:var(--hud-height);padding:6px 12px;background:var(--bg-card);border-bottom:1px solid var(--border-soft)}.hud-left,.hud-center,.hud-right{display:flex;align-items:center;gap:6px}.hud-icon{font-size:1.05rem;line-height:1}.hud-value{font-size:1.05rem;font-weight:700;color:var(--color-primary);font-variant-numeric:tabular-nums}.hud-value.is-low{color:var(--color-warning);animation:blink-warn .9s ease-in-out infinite}.hud-shield{display:inline-flex;align-items:center;gap:2px;margin-left:4px;padding:1px 7px;border-radius:999px;border:1px solid rgba(0,255,136,.5);background:#00ff881f;color:var(--color-holo);font-size:.78rem;font-weight:700;font-variant-numeric:tabular-nums}.hud-level{max-width:9em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.8rem;font-weight:700;color:var(--color-ice);opacity:.82}@keyframes blink-warn{50%{opacity:.35}}.btn-next-wave{padding:7px 12px;border-radius:6px;border:1px solid var(--border-strong);background:linear-gradient(135deg,#0080ff47,#00ffff38);color:var(--color-ice);font-size:.78rem;font-weight:700;cursor:pointer;white-space:nowrap;transition:box-shadow .15s ease,transform .15s ease,opacity .15s ease}.btn-next-wave:hover:not(:disabled){box-shadow:0 0 14px #0ff6;transform:translateY(-1px)}.btn-next-wave:disabled{opacity:.42;cursor:default;background:#ffffff0f;border-color:#ffffff24}.btn-next-wave.is-boss{border-color:var(--color-warning);background:linear-gradient(135deg,#ff336659,#ff990047);animation:boss-warn 1s ease-in-out infinite}@keyframes boss-warn{50%{box-shadow:0 0 18px #ff3366bf}}.btn-icon{width:34px;height:34px;border-radius:6px;border:1px solid var(--border-soft);background:#00ffff0f;color:var(--color-primary);font-size:.75rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s ease,border-color .15s ease}.btn-icon:hover{background:#00ffff29;border-color:var(--border-strong)}.canvas-wrap{position:relative;flex:1 1 0;min-height:0;overflow:hidden;background:var(--bg-darker)}#game-canvas{position:absolute;top:0;right:0;bottom:0;left:0;display:block;width:100%;height:100%;cursor:crosshair;touch-action:none}.skill-bar{display:flex;align-items:center;justify-content:center;gap:14px;flex:0 0 auto;min-height:var(--skill-height);padding:6px 12px;background:linear-gradient(180deg,#081222f5,#0a1628f5);border-top:1px solid rgba(0,255,255,.12);overflow-x:auto;-webkit-overflow-scrolling:touch}.energy-box{display:flex;align-items:center;gap:6px;flex:0 0 auto;padding:4px 10px;border-radius:8px;border:1px solid rgba(255,204,0,.28);background:#ffcc000f}.energy-icon{font-size:.95rem;line-height:1}.energy-pips{display:flex;gap:3px}.energy-pip{width:9px;height:14px;border-radius:2px;background:#ffffff1f;border:1px solid rgba(255,255,255,.16);transition:background .15s ease,box-shadow .15s ease}.energy-pip.on{background:linear-gradient(180deg,#ffe680,#f90);border-color:#fc0;box-shadow:0 0 7px #ffcc00b3}.energy-text{font-size:.72rem;font-weight:700;color:#fc0;font-variant-numeric:tabular-nums}.skill-buttons{display:flex;align-items:stretch;gap:8px;flex:0 0 auto}.skill-btn{position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;min-width:76px;padding:5px 10px;border-radius:8px;border:1px solid rgba(0,255,255,.22);background:#00ffff0d;color:var(--color-ice);cursor:pointer;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease}.skill-btn:hover{border-color:var(--border-strong);transform:translateY(-2px)}.skill-cd-fill{position:absolute;left:0;bottom:0;width:100%;height:var(--cd, 100%);background:#008cc838;pointer-events:none;transition:height .15s linear}.skill-btn>span:not(.skill-cd-fill){position:relative;z-index:1}.skill-btn .skill-icon{font-size:1.15rem;line-height:1.1}.skill-btn .skill-name{font-size:.68rem;font-weight:600;white-space:nowrap}.skill-btn .skill-cost{font-size:.62rem;color:#fc0;font-variant-numeric:tabular-nums}.skill-btn .skill-cd{font-size:.66rem;font-weight:800;color:#9fd8ff;font-variant-numeric:tabular-nums;min-height:.8em}.skill-btn.cooling{opacity:.72}.skill-btn.unaffordable{opacity:.45;border-color:#ffffff24}.skill-btn.active{border-color:var(--color-energy);background:#f903;box-shadow:0 0 14px #ff990080;transform:translateY(-2px)}.tower-menu{display:flex;align-items:stretch;justify-content:center;gap:8px;flex:0 0 auto;min-height:var(--menu-height);padding:8px 10px;background:var(--bg-card);border-top:1px solid var(--border-soft);overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}.tower-btn{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:68px;padding:6px 10px;border-radius:8px;border:1px solid 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#00ffff1f;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:panel-in .16s ease-out;z-index:20}@keyframes panel-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.tp-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.tp-title{display:flex;align-items:center;gap:6px;font-size:.95rem;font-weight:700}.tp-icon{font-size:1.05rem;line-height:1}.tp-level{font-size:.68rem;font-weight:700;padding:2px 6px;border-radius:4px;background:#00ffff29;color:var(--color-primary)}.tp-close{width:26px;height:26px;border-radius:5px;border:1px solid rgba(255,255,255,.16);background:transparent;color:var(--color-ice);cursor:pointer;font-size:.9rem;line-height:1}.tp-close:hover{background:#ffffff1a}.tp-stats{display:grid;grid-template-columns:1fr 1fr;gap:6px 10px;margin-bottom:10px}.tp-stat{display:flex;justify-content:space-between;gap:6px;font-size:.76rem;padding:3px 0;border-bottom:1px dashed 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.tower-name{font-size:.66rem}.tower-btn .tower-cost{font-size:.63rem}.tower-panel{left:8px;right:8px;bottom:8px;width:auto;max-width:none;max-height:62%;overflow-y:auto}.toast{font-size:.74rem;padding:6px 11px}.overlay-content{padding:20px 16px}.help-key{flex-basis:66px;font-size:.72rem}.help-desc{font-size:.74rem}.level-card{padding:8px 10px;gap:2px}.level-name{font-size:.85rem}.level-sub,.level-stats{font-size:.67rem}.ach-grid{gap:6px;max-height:46vh}.ach-card{padding:7px 8px}.ach-icon{font-size:1rem}.ach-name{font-size:.7rem}.ach-desc{font-size:.6rem}.lb-row{grid-template-columns:20px repeat(5,minmax(0,1fr)) 28px;gap:2px;font-size:.64rem;padding:5px 4px}.lb-row.lb-head{font-size:.6rem}.lb-tab{padding:6px 8px;font-size:.68rem}.lb-list{max-height:34vh}.menu-row{gap:6px}.menu-row .btn{padding:10px 8px;font-size:.82rem}}@media(max-width:400px){.tower-btn .tower-name{display:none}.tower-btn{min-width:52px}}