.snake-shell{color:#f1f5f9;box-sizing:border-box;background:radial-gradient(circle at 50% 10%,#061e1b 0%,#03110f 60%,#000504 100%);flex-direction:column;align-items:center;min-height:100vh;padding:1rem;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;position:relative;overflow-x:hidden}.snake-header{z-index:10;border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;width:100%;max-width:800px;margin-bottom:.75rem;padding:.75rem 1rem;display:flex}.snake-home{color:#10b981;background:#ffffff0d;border-radius:6px;padding:.4rem .8rem;font-size:.9rem;text-decoration:none;transition:all .2s}.snake-home:hover{color:#fff;background:#ffffff26}.snake-brand{align-items:center;gap:.75rem;display:flex}.snake-brand span.seal{color:#fff;background:linear-gradient(135deg,#10b981 0%,#059669 100%);border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;font-size:1.1rem;font-weight:900;display:inline-flex;box-shadow:0 4px 12px #10b98166}.snake-brand h1{margin:0;font-size:1.25rem;font-weight:700}.snake-brand small{color:#6ee7b7;font-size:.65rem;display:block}.snake-viewport{aspect-ratio:1;border:3px solid #10b98166;border-radius:16px;width:min(600px,100vw - 2rem,100dvh - 180px);position:relative;overflow:hidden;box-shadow:0 0 30px #10b9814d,0 20px 50px #000c}.snake-canvas{cursor:crosshair;touch-action:none;background:#020b08;width:100%;height:100%;display:block}@media (max-width:520px){.snake-leaderboard{min-width:104px;padding:.35rem .5rem;font-size:.65rem}.snake-leaderboard h4{font-size:.7rem}}.snake-leaderboard{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:none;background:#000000b3;border:1px solid #ffffff26;border-radius:8px;min-width:140px;padding:.5rem .8rem;font-size:.75rem;position:absolute;top:12px;right:12px}.snake-leaderboard h4{color:#6ee7b7;margin:0 0 4px;font-size:.8rem}.snake-boost-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#10b981 0%,#059669 100%);border:none;border-radius:20px;margin-top:1rem;padding:.6rem 2rem;font-size:1rem;font-weight:700;box-shadow:0 4px 15px #10b98166}