:root{--usborne-yellow:#ffef00;--usborne-blue-dark:#1e3799;--usborne-blue-light:#006eb8;--btn-1:#008140;--btn-2:#6a1b9a;--btn-3:#d31444;--btn-4:#ad1457;--btn-5:#0277bd;--btn-6:#1a237e;--bg-white:#fff;--accent-red:#e11d48;--text-dark:#333;--bg-light:#f9f9f9;--bg-hover:#f5f5f5;--bg-img:#f0f0f0;--nav-home-hover:#ec4899;--nav-about-hover:#f97316;--nav-store-hover:#22c55e;--nav-contact-hover:#8b5cf6}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-white);color:var(--usborne-blue-dark);font-family:Nunito,sans-serif;line-height:1.5;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-weight:700}.usborne-header{background-color:var(--usborne-yellow);position:relative}.usborne-top-bar{background-color:var(--usborne-blue-light);color:#fff;justify-content:flex-start;align-items:center;padding:.5rem 1rem;font-size:.85rem;display:flex}.usborne-nav{z-index:2;justify-content:space-between;align-items:center;gap:1.5rem;max-width:1200px;margin:0 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