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';
resultContent.innerHTML = html;
resultMeta.textContent = val + ' × ' + UNITS[from].to_m2 + ' / ' + UNITS[to].to_m2 + ' = ' + result;
resultArea.classList.add('show');
});
document.getElementById('btn-clear').addEventListener('click', function() { document.getElementById('val').value = 1; fromSel.value = 'm2'; toSel.value = 'mu'; clearError(); clearResult(); });
})();