:root{--bg: #070b16;--panel: #0e1424;--ink: #e7ecf7;--muted: #8794ad;--accent: #ff5a3c;--accent2: #36c2ff;--ok: #4ade80;--warn: #fbbf24;--line: #1d2740}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-user-select:none;user-select:none}#app{min-height:100%;display:flex;flex-direction:column;align-items:center}.wrap{width:100%;max-width:720px;padding:16px;display:flex;flex-direction:column;gap:14px}h1{font-size:26px;margin:0;letter-spacing:.5px}.sub{color:var(--muted);font-size:14px;margin:0;line-height:1.4}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.spacer{flex:1}button{font:inherit;color:var(--ink);background:#182238;border:1px solid var(--line);padding:10px 16px;border-radius:10px;cursor:pointer;transition:transform .05s,background .12s,border-color .12s}button:hover{background:#1f2c49}button:active{transform:translateY(1px)}button.primary{background:var(--accent);border-color:var(--accent);color:#1a0a06;font-weight:700}button.primary:hover{background:#ff7457}button.ghost{background:transparent}button.sel{border-color:var(--accent2);color:var(--accent2)}.diffs{display:flex;gap:8px}.hud{display:flex;gap:16px;align-items:center;font-variant-numeric:tabular-nums;flex-wrap:wrap}.hud .stat b{font-size:20px}.hud .stat span{color:var(--muted);font-size:12px;display:block}.fuelbar{flex:1;min-width:120px;height:14px;background:#0a0f1e;border:1px solid var(--line);border-radius:8px;overflow:hidden}.fuelfill{height:100%;background:linear-gradient(90deg,var(--accent2),var(--ok));transition:width .08s linear}canvas{width:100%;height:auto;display:block;background:#060912;border:1px solid var(--line);border-radius:12px;touch-action:none;cursor:crosshair}.overlay{position:relative}.overlay-msg{text-align:center;padding:22px}.overlay-msg h2{margin:0 0 8px;font-size:28px}.big{font-size:40px;font-weight:800}.standing{color:var(--muted);font-size:14px;margin:8px 0 0;min-height:1em}.help{color:var(--muted);font-size:13px;line-height:1.5}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#182238;border:1px solid var(--line);padding:10px 16px;border-radius:10px;font-size:14px}