.official-nav{position:sticky;top:0;z-index:30;display:flex;justify-content:center;gap:8px;padding:12px 20px;background:#f7f8f3;border-bottom:1px solid #cfd8cb;font-family:-apple-system,'PingFang TC',sans-serif}.official-nav a{display:flex;align-items:center;justify-content:center;padding:10px 18px;color:#253b33;text-decoration:none;font-size:16px;line-height:1.5;border-radius:8px;white-space:nowrap}.official-nav a:hover,.official-nav a:focus-visible{background:#e0e8dc}.official-nav a[aria-current]{background:#2c4435;color:white}.section-tabs{display:none!important}header:has(.official-back) .official-back{display:none}header{position:static!important}html{scroll-padding-top:90px}@media(max-width:650px){.official-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;padding:8px}.official-nav a{font-size:15px;padding:8px 3px;white-space:normal;text-align:center}.brand{display:flex!important}html{scroll-padding-top:115px}}
.official-nav .hander-back{font:inherit;font-size:16px;border:1px solid #aabca6;border-radius:8px;background:white;color:#253b33;padding:10px 14px;cursor:pointer;white-space:nowrap}.official-nav{flex-wrap:wrap}@media(max-width:650px){.official-nav .hander-back{grid-column:1/-1;font-size:15px;padding:7px}}