:root{--bg: #0c0d14;--bg-2: #161826;--fg: #f3f4ff;--accent: #00e0ff;--accent-2: #ff3ea5;--danger: #ff5c5c;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;background:var(--bg);color:var(--fg);overflow:hidden;overscroll-behavior:none;-webkit-tap-highlight-color:transparent}#game-canvas{position:fixed;inset:0;width:100vw;height:100vh;display:block;touch-action:none}#loading{position:fixed;inset:0;background:radial-gradient(circle at 50% 40%,var(--bg-2),var(--bg) 70%);display:flex;align-items:center;justify-content:center;z-index:100;transition:opacity .48s ease}#loading.fade-out{opacity:0;pointer-events:none}.loading-inner{text-align:center}.loading-inner h1{font-size:clamp(2rem,8vw,5rem);letter-spacing:.15em;font-weight:900;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:.5rem}.loading-inner p{color:#ffffff8c;font-size:.95rem}#hud{position:fixed;inset:0;pointer-events:none;font-feature-settings:"tnum" 1}.hud-speed{position:absolute;right:24px;bottom:24px;text-align:right;pointer-events:none;z-index:2}.hud-speed .num{font-size:clamp(2.4rem,6vw,4.4rem);font-weight:800;line-height:1;text-shadow:0 2px 16px rgba(0,224,255,.35)}.hud-speed .unit{font-size:.85rem;opacity:.65;letter-spacing:.2em;margin-top:4px}.hud-corner{position:absolute;top:16px;left:16px;background:#0c0d148c;backdrop-filter:blur(8px);padding:10px 14px;border-radius:10px;font-size:.8rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.04em;line-height:1.45;pointer-events:none}.hud-corner .k{color:#ffffff80}.hud-corner .v{color:var(--accent)}.hud-controls{position:absolute;left:50%;transform:translate(-50%);bottom:16px;background:#0c0d148c;backdrop-filter:blur(8px);padding:8px 14px;border-radius:999px;font-size:.78rem;letter-spacing:.05em;color:#ffffffb3;display:none}@media(min-width:720px){.hud-controls{display:block}}.touch{position:fixed;display:none;touch-action:none;user-select:none;-webkit-user-select:none}@media(pointer:coarse),(max-width:720px){.touch{display:block}}.touch-steer{left:12px;bottom:12px;width:38vw;height:38vw;max-width:220px;max-height:220px;border-radius:50%;background:radial-gradient(circle,#ffffff14,#ffffff05 70%);border:1px solid rgba(255,255,255,.18)}.touch-steer .knob{position:absolute;inset:50%;width:35%;height:35%;margin:-17.5% 0 0 -17.5%;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-radius:50%;box-shadow:0 6px 24px #00e0ff66;pointer-events:none;transition:transform 60ms ease-out}.touch-btn-stack{right:16px;bottom:16px;display:flex;flex-direction:column;gap:12px}.touch-btn{width:17vw;max-width:90px;height:17vw;max-height:90px;border-radius:50%;background:#ffffff14;border:1px solid rgba(255,255,255,.18);color:#fff;font-weight:700;letter-spacing:.08em;display:flex;align-items:center;justify-content:center;font-size:.85rem}.touch-btn.active{background:#00e0ff52;border-color:#00e0ffb3}.touch-throttle{right:100px;bottom:16px;display:flex;flex-direction:column;gap:8px}.touch-throttle .touch-btn.gas{background:#ff3ea52e;border-color:#ff3ea580}.touch-throttle .touch-btn.gas.active{background:#ff3ea573}