#arenaMenu{min-height:600px;padding:28px;background:radial-gradient(circle at 50% 0,#223b61,#0a1221 70%)}.arena-head{display:flex;justify-content:space-between;align-items:start;padding:8px 4px 22px;border-bottom:1px solid #40658a}.arena-head span{color:#82dff5;letter-spacing:.16em;font-size:.7rem}.arena-head h2{margin:4px 0}.arena-head p{margin:0;color:#a9c1d1}.arena-head button{padding:10px 14px;color:white;background:#132d47;border:1px solid #5e9ec6}#levelGrid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:24px}.arena-level{min-height:150px;padding:15px;text-align:left;border:1px solid #315776;background:linear-gradient(145deg,#13263b,#091320);color:#dff5ff}.arena-level:hover:not(:disabled){transform:translateY(-5px);border-color:#83dff6;box-shadow:0 12px 24px #0008}.arena-level:disabled{opacity:.34;cursor:not-allowed}.arena-level b,.arena-level small{display:block}.arena-level b{color:#ffde81;font-size:1.05rem}.arena-level small{margin-top:8px;color:#a8c2d4}.arena-level .reward{margin-top:10px;color:#80eac0}.arena-level.cleared{border-color:#d8b85e;background:linear-gradient(145deg,#3d3420,#101827)}@media(max-width:800px){#levelGrid{grid-template-columns:repeat(2,1fr)}.arena-head{gap:15px;flex-direction:column}}