氟碳透明斷熱漆

function setLanguage(mode) { const btnBilingual = document.getElementById('lang-bilingual'); const btnEn = document.getElementById('lang-en'); const btnZh = document.getElementById('lang-zh'); [btnBilingual, btnEn, btnZh].forEach(btn => { btn.classList.remove('bg-white', 'text-brand-700', 'shadow-sm'); btn.classList.add('text-slate-600'); }); if (mode === 'bilingual') { btnBilingual.classList.add('bg-white', 'text-brand-700', 'shadow-sm'); document.querySelectorAll('.lang-zh').forEach(el => el.style.display = 'inline'); document.querySelectorAll('.lang-en').forEach(el => el.style.display = 'inline'); } else if (mode === 'en') { btnEn.classList.add('bg-white', 'text-brand-700', 'shadow-sm'); document.querySelectorAll('.lang-zh').forEach(el => el.style.display = 'none'); document.querySelectorAll('.lang-en').forEach(el => el.style.display = 'inline'); } else if (mode === 'zh') { btnZh.classList.add('bg-white', 'text-brand-700', 'shadow-sm'); document.querySelectorAll('.lang-zh').forEach(el => el.style.display = 'inline'); document.querySelectorAll('.lang-en').forEach(el => el.style.display = 'none'); } } function updateCalculator() { const sqm = document.getElementById('sqm-range').value; const ping = (sqm * 0.3025).toFixed(1); document.getElementById('sqm-val').innerText = `$ m² (~$ 坪)`; } // Initialize as Bilingual by default setLanguage('bilingual');