.nav-tools{display:flex;align-items:center;gap:20px}.language{position:relative;display:inline-flex;align-items:center;padding:6px 3px;color:#fff;font:600 16px "Microsoft YaHei",Arial,sans-serif;cursor:pointer;white-space:nowrap}.language:after{content:"";width:6px;height:6px;margin:-3px 0 0 8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}.language select{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.language select option{color:#13202b;background:#fff}.footer-bottom a{color:#74ddf5;text-decoration:none}.footer-bottom a:hover{text-decoration:underline}@media(max-width:800px){.nav-tools{margin-left:auto}.nav-tools nav{right:0}.language{font-size:14px;padding:5px 2px}}