nav{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:50;background-color:#fffffff2;position:fixed;top:0;left:0;right:0;box-shadow:0 1px 3px #0000001a}nav .container-custom{justify-content:space-between;align-items:center;height:4rem;display:flex}nav h1{color:var(--nature-700);margin:0;font-size:1.25rem}nav .nav-links{gap:2rem;margin:0;padding:0;list-style:none;display:flex}nav button{cursor:pointer;color:#4b5563;background:0 0;border:none;padding:.5rem .75rem;font-size:.875rem;font-weight:500;transition:color .2s}nav button:hover{color:var(--nature-600)}nav button.active{color:var(--nature-700);border-bottom:2px solid var(--nature-500)}