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solid var(--surface-border)}@media (max-width:640px){.nav{position:fixed;bottom:0;left:0;right:0;z-index:200;border-bottom:none;border-top:1px solid var(--surface-border);padding:0;background:var(--surface);backdrop-filter:blur(20px)}.nav:not(.nav--open) .nav-link{flex-direction:column;gap:2px;font-size:.6rem;padding:4px 6px}.nav:not(.nav--open) .nav-link span{font-size:.55rem}.nav:not(.nav--open) .nav-inner{justify-content:space-around;padding:4px 0}.footer-inner{flex-direction:column;gap:4px;text-align:center}}