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const updateHeaderMetrics = () => { const header = document.getElementById('header'); const rect = header.getBoundingClientRect(); const headerHeight = rect.bottom; document.documentElement.style.setProperty('--header-height', `${headerHeight}px`); }; window.addEventListener('DOMContentLoaded', updateHeaderMetrics); window.addEventListener('resize', updateHeaderMetrics); const header = document.getElementById('header'); const resizeObserver = new ResizeObserver(entries => { for (let entry of entries) { const rect = entry.target.getBoundingClientRect(); const headerHeight = rect.bottom; document.documentElement.style.setProperty('--header-height', `${headerHeight}px`); } }); resizeObserver.observe(header);

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If you have any questions or concerns, please do not hesitate to contact us.

We would love to hear from you, contact us on:

Email: 域名相对应的邮箱（如未申请域名邮箱，请使用outlook或gmail邮箱）

Phone Number: 美国电话

Address:美国地址