:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.5;font-weight:400;color:#f4f7fb;background:radial-gradient(circle at top,rgba(126,231,255,.12),transparent 28%),linear-gradient(180deg,#0a1627,#030712);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body,#root{margin:0;width:100%;min-height:100%}body{min-height:100vh;overflow-x:hidden}a{color:inherit}button,input,textarea,select{font:inherit}.app-shell{position:relative;width:100vw;height:100vh;overflow:hidden;background:radial-gradient(circle at top,rgba(255,223,58,.08),transparent 84%),linear-gradient(180deg,#04080f0d,#04080f33)}.scene-canvas,canvas{display:block}.app-shell__nav{position:fixed;top:.5rem;left:50%;z-index:20;width:min(860px,calc(100vw - 2rem));transform:translate(-50%)}.top-station-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.4rem;padding:.25rem;border:1px solid rgba(255,255,255,.08);border-radius:.15rem;box-shadow:0 18px 40px #00000052,inset 0 1px #ffffff0d;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.top-station-nav__button{min-height:1.5rem;padding:.55rem .5rem;border:0;border-radius:.15rem;color:#f4f7fb99;background:#ffffff05;cursor:pointer;transition:background-color .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease}.top-station-nav__button:hover{transform:translateY(-1px);background:#00000014}.top-station-nav__button--active{color:#d4d4d4;background:radial-gradient(circle at top,rgba(255,209,102,0),transparent 84%);box-shadow:0 10px 24px #ffd1664d}@media (max-width: 760px){.app-shell__nav{top:1rem;width:calc(100vw - 1rem)}.top-station-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.top-station-nav__button{min-height:2rem;padding:.8rem .75rem;font-size:.95rem}}