.xb-header{position:sticky;top:0;z-index:50;background:#f4f0e7;border-bottom:3px solid #cbd2c8;color:#203b31;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Heiti SC","Microsoft YaHei",sans-serif}
html:has(.xb-header){scroll-padding-top:90px}
html:has(.xb-header){scroll-behavior:auto}
html:has(.xb-header){scrollbar-gutter:stable}
.xb-header-inner{width:min(1180px,calc(100% - 48px));min-height:84px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}
.xb-brand{display:inline-flex;align-items:center;flex:none;color:inherit;text-decoration:none}
.xb-brand img{display:block;width:228px;height:80px;object-fit:contain}
.xb-nav{display:flex;align-items:center;gap:28px;white-space:nowrap}
.xb-nav a,.xb-nav [aria-current]{display:inline-flex;align-items:center;min-height:44px;color:#405749;text-decoration:none;font-size:13px;font-weight:700;line-height:1.4;padding:8px 0;border-bottom:3px solid transparent}
.xb-nav a:hover,.xb-nav [aria-current]{color:#203b31;border-bottom-color:#275844}
.xb-header a:focus-visible{outline:3px solid #b8843a;outline-offset:3px}
@media(max-width:700px){.xb-header-inner{width:calc(100% - 32px);min-height:0;display:block;padding:7px 0 5px}.xb-brand{display:flex;width:max-content}.xb-brand img{width:188px;height:66px}.xb-nav{width:100%;justify-content:space-between;gap:6px;overflow-x:auto;scrollbar-width:none}.xb-nav::-webkit-scrollbar{display:none}.xb-nav a,.xb-nav [aria-current]{min-width:44px;justify-content:center;font-size:12px;padding:8px 0}}
@media(max-width:700px){html:has(.xb-header){scroll-padding-top:128px}}
@media(max-width:360px){.xb-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;overflow:visible}.xb-nav a,.xb-nav [aria-current]{width:100%}html:has(.xb-header){scroll-padding-top:174px}}