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0;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 10px #0000000d}.nav-item{color:var(--text-secondary);flex-direction:column;flex:1;align-items:center;gap:2px;padding:6px 0;font-size:11px;text-decoration:none;transition:color .2s;display:flex}.nav-item:hover{color:var(--primary);text-decoration:none}.nav-item.active{color:var(--primary)}.nav-icon{font-size:20px}.nav-label{font-weight:500}.main-content{min-height:100vh}.empty-state{text-align:center;color:var(--text-secondary);padding:60px 20px}@media (width<=480px){.subject-grid{grid-template-columns:1fr 1fr}.test-types,.quick-links{grid-template-columns:1fr}.result-stats{gap:16px}}@media (width<=360px){.subject-grid{grid-template-columns:1fr}}
