*{box-sizing:border-box}html,body{background:var(--kb-bg);height:100%;color:var(--kb-ink);font:15px/1.5 var(--kb-text);-webkit-font-smoothing:antialiased;margin:0}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--kb-ink);outline-offset:2px}.spin{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.app{grid-template-rows:auto 1fr;grid-template-columns:400px minmax(0,1fr);height:100dvh;display:grid}.app>.kb-header{grid-column:1/-1}.product-nav{border-right:var(--kb-rule);display:flex;position:relative}.product-nav-button{color:var(--kb-ink);letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;padding:0 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