*{box-sizing:border-box}html,body{margin:0;height:100%;background:#0e1013;color:#e9eef2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
#game{display:block;width:100vw;height:100vh}
#hud{position:fixed;left:16px;top:14px;z-index:10;background:rgba(14,16,19,0.6);backdrop-filter:saturate(150%) blur(8px);border:1px solid rgba(255,255,255,0.08);border-radius:10px;padding:10px 12px;box-shadow:0 6px 24px rgba(0,0,0,0.25)}
#hud .title{font-weight:700;letter-spacing:0.5px;margin-bottom:4px}
#hud .stats{font-size:13px;opacity:0.9;margin-bottom:6px}
#hud .controls{display:flex;gap:6px;flex-wrap:wrap}
button{appearance:none;border:1px solid rgba(255,255,255,0.12);background:#171a1f;color:#e9eef2;padding:6px 10px;border-radius:8px;cursor:pointer;font-weight:600;font-size:12px}
button:hover{background:#1d232b}
button.active{background:#2e76ff;border-color:#2e76ff}
#hud .tip{margin-top:6px;font-size:12px;opacity:0.75}
.station{position:absolute}
#gameover{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.4);backdrop-filter:blur(2px)}
#gameover.hidden{display:none}
#gameover .panel{background:#0e1013;border:1px solid rgba(255,255,255,0.1);border-radius:12px;padding:24px 28px;min-width:300px;max-width:70vw;text-align:center;box-shadow:0 10px 34px rgba(0,0,0,0.4)}
#gameover h1{margin:0 0 8px 0;font-size:22px}
#gameover p{margin:0 0 14px 0;opacity:0.85}
#speedWrap button{margin-left:4px}