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.header-actions{grid-area:actions;justify-self:end;display:flex;align-items:center;gap:14px;white-space:nowrap}.site-header .tool-tabs{display:contents}.tool-category-row{grid-area:categories;height:100%;display:flex;align-items:stretch;justify-content:center;gap:18px}.tool-category-tab{min-width:142px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;gap:11px;border-bottom:3px solid transparent;border-radius:12px 12px 0 0;color:#1f2d3d;background:transparent;font:800 15px/1.1 -apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;text-decoration:none;white-space:nowrap;transition:color .18s,background .18s,border-color .18s}.tool-category-tab:hover{color:#116ce5;background:#f4f8fd}.tool-category-tab.active{color:#126ee8;border-bottom-color:#1677ff;background:linear-gradient(180deg,#eef6ff,#f8fbff)}.nav-icon{width:22px;height:22px;flex:0 0 auto;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.tool-category-tab .nav-icon{width:24px;height:24px}.tool-category-tab.active .nav-icon{stroke-width:2}.tool-link-row{grid-area:tools;min-width:0;min-height:90px;margin:0 -34px;padding:16px 34px;display:flex;align-items:center;justify-content:center;gap:12px;border-top:1px solid #e4ebf3;background:#fff}.tool-nav-group{display:none}.tool-nav-group.active{display:contents}.tool-nav-group-title{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.tool-nav-links{display:none;align-items:center;justify-content:center;gap:12px}.tool-nav-group.active .tool-nav-links{display:flex}.site-header .tool-tab,.tool-more-link{min-height:44px;padding:0 17px;display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid #dfe7f0;border-radius:12px;background:#fff;color:#25354a;box-shadow:0 2px 7px #25446806;font:750 13px/1.1 -apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;text-decoration:none;white-space:nowrap;transition:color .18s,background .18s,border-color .18s,box-shadow .18s,transform .18s}.site-header .tool-tab:hover,.tool-more-link:hover{color:#126ee8;border-color:#bad8ff;background:#f7fbff;box-shadow:0 5px 14px #1f6fd714;transform:translateY(-1px)}.site-header .tool-tab.active{color:#0874f9;border-color:#d4e8ff;background:linear-gradient(135deg,#edf6ff,#f8fbff)}.site-header .tool-tab.active .nav-icon{color:#0874f9;fill:#0874f9;stroke:#fff}.tool-more-link{color:#26364b}.tool-more-link>i{width:8px;height:8px;margin-left:2px;border-right:2px solid #1677ff;border-bottom:2px solid #1677ff;transform:rotate(45deg) translateY(-2px)}.site-header .language-switch{padding:3px;display:inline-flex;border:1px solid #dce6f0;border-radius:11px;background:#fff}.site-header .language-link{min-height:34px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px}.site-header .language-link.active{color:#1677ff;background:#edf6ff}.site-header .official-site-link{min-height:42px;padding:0 14px;border:1px solid #a9ceff;border-radius:11px;background:#fff;color:#0871ef}.site-header .tool-tab:focus-visible,.site-header .tool-category-tab:focus-visible,.site-header .tool-more-link:focus-visible,.site-header .language-link:focus-visible,.site-header .official-site-link:focus-visible{outline:2px solid #1677ff;outline-offset:2px}@media(max-width:1180px){.site-header{padding-inline:22px;grid-template-columns:minmax(210px,1fr) auto minmax(210px,1fr)}.tool-category-row{gap:4px}.tool-category-tab{min-width:112px;padding-inline:13px}.tool-link-row{margin-inline:-22px;padding-inline:20px;gap:7px}.tool-nav-links{gap:7px}.site-header .tool-tab,.tool-more-link{padding-inline:11px;font-size:11.5px}}@media(max-width:820px){.site-header{width:100vw;padding:0 14px;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:66px 54px 58px;grid-template-areas:"brand actions" "categories categories" "tools tools";column-gap:8px}.site-header .brand-logo{width:34px;height:34px}.site-header .brand-name{font-size:18px}.site-header .brand em{display:none}.site-header .header-actions{gap:6px}.site-header .official-site-link{min-height:36px;padding:0 9px}.site-header .official-site-link>span:first-child{display:none}.tool-category-row{justify-content:stretch;gap:3px}.tool-category-tab{min-width:0;flex:1;padding:0 3px;gap:5px;border-radius:9px 9px 0 0;font-size:10.5px}.tool-category-tab .nav-icon{width:17px;height:17px}.tool-link-row{min-height:58px;margin:0 -14px;padding:7px 14px}.tool-nav-group.active .tool-nav-links{display:contents}.site-header .tool-tab{display:none;min-height:40px}.site-header .tool-tab.active{padding-inline:16px;display:inline-flex}.tool-more-link{min-height:40px;padding-inline:16px}}@media(max-width:430px){.site-header .language-link{min-height:32px;padding-inline:7px;font-size:11px}.tool-category-tab{font-size:9.5px}.tool-category-tab .nav-icon{width:15px;height:15px}}