// 綁定一鍵複製功能
        document.querySelectorAll('.copy-btn').forEach(btn => {
            btn.addEventListener('click', () => {
                const codeBlock = btn.parentElement.querySelector('code');
                if (codeBlock) {
                    navigator.clipboard.writeText(codeBlock.innerText).then(() => {
                        btn.innerText = '✅ 已複製！';
                        btn.style.background = 'rgba(46, 204, 113, 0.4)';
                        setTimeout(() => {
                            btn.innerText = '📋 複製代碼';
                            btn.style.background = 'rgba(255,255,255,0.1)';
                        }, 2000);
                    });
                }