:root{color-scheme:dark;--bg: #070a12;--panel: #11182a;--ink: #e6ecff;--accent: #62d0ff}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.wrap{max-width:720px;margin:0 auto;padding:16px}header{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}h1{margin:0;font-size:28px;letter-spacing:2px;color:var(--accent)}.hud{display:flex;gap:12px;font-variant-numeric:tabular-nums;font-weight:600}.hud span{background:var(--panel);padding:4px 10px;border-radius:8px;font-size:14px}#hud-lives{color:#ff7a88}canvas{display:block;width:100%;height:auto;margin:14px 0;border-radius:12px;background:#0b0f1a;border:1px solid #1d2742}.controls{display:flex;align-items:center;gap:14px;flex-wrap:wrap}select,button{background:var(--panel);color:var(--ink);border:1px solid #2a3556;border-radius:8px;padding:6px 12px;font-size:14px;cursor:pointer}button:hover{border-color:var(--accent)}.hint{flex:1 1 100%;margin:6px 0 0;font-size:13px;color:#93a0c4;line-height:1.5}