@charset "UTF-8";

:root{--paper:#fff;--white:#fff;--ink:#232323;--muted:#73706d;--line:#e7e5e2;--soft:#f7f6f4;--accent:#ae4b28;--green:var(--accent);--radius:5px;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;max-width:100%;height:auto}svg{vertical-align:middle}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}::selection{background:#f4dfd4}[hidden]{display:none!important}.wrap{width:min(var(--max),calc(100% - 64px));margin-inline:auto}.skip{position:absolute;left:16px;top:-100px;z-index:100;padding:8px 18px;background:var(--ink);color:#fff}.skip:focus{top:8px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line)}.header-inner{height:72px;display:flex;align-items:center;gap:20px}.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}.brand img{width:32px;height:32px}.brand b{display:block;font-size:18px;font-weight:650;letter-spacing:-.35px;line-height:1.4}.brand small{display:block;font-size:11px;color:var(--muted);margin-top:2px}.nav{display:flex;align-items:center;gap:27px;margin-left:auto;font-size:14px}.nav a{display:flex;align-items:center;height:72px;white-space:nowrap;border-bottom:2px solid transparent;padding-top:2px}.nav a[aria-current=page]{color:var(--accent);border-bottom-color:var(--accent)}.search-open{display:grid;place-items:center;border:1px solid var(--line);border-radius:4px;background:#fff;width:34px;height:34px;padding:0;font-size:23px;line-height:1;color:var(--ink)}.search-open:hover{border-color:#c9c3bc;background:var(--soft)}.menu-toggle{display:none;border:0;padding:3px 0 3px 6px;background:transparent;color:var(--ink);font-size:22px}

/* 首页 */
.home-intro{padding:64px 0 52px;min-height:340px}.home-kicker{margin:0 0 13px;color:var(--accent);font-size:15px;font-weight:600}.home-intro h1{margin:0;font-size:clamp(34px,4vw,46px);font-weight:650;letter-spacing:-1.2px;line-height:1.35}.home-summary{margin:17px 0 0;max-width:780px;color:#66625e;font-size:16px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:25px 0 0}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:10px 20px;min-height:43px;border:1px solid var(--accent);border-radius:var(--radius);background:var(--accent);color:#fff;font-size:14px;font-weight:550;line-height:1.5}.button:hover{background:#933e20;border-color:#933e20;color:#fff}.button.secondary{background:#fff;color:var(--ink);border-color:#d5d1cb}.button.secondary:hover{background:var(--soft);border-color:#bdb6ae;color:var(--accent)}
.home-quick{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-block:1px solid var(--line)}.home-quick a{padding:19px 22px;font-size:15px;font-weight:550;border-right:1px solid var(--line)}.home-quick a:first-child{padding-left:0}.home-quick a:last-child{border-right:0}.home-quick a:hover{color:var(--accent);background:#faf9f7}.home-catalog{padding:43px 0 47px}.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:22px}.section-head h2{font-size:24px;font-weight:650;letter-spacing:-.5px;line-height:1.5;margin:0}.section-head p{font-size:14px;color:var(--muted);margin:8px 0 0}.text-link{font-size:13px;color:var(--accent);white-space:nowrap}.text-link:hover{text-decoration:underline;text-underline-offset:4px}.home-directory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px}.directory-heading{margin:0 0 12px;font-size:14px;font-weight:600;color:var(--muted)}
.title-list,.card-grid.title-list{display:grid;grid-template-columns:1fr;gap:0;border-top:1px solid var(--line)}.article-card.title-only{display:block;margin:0;padding:0;border:0;border-bottom:1px solid var(--line);background:transparent}.article-card.title-only h3{margin:0;font-size:16px;line-height:1.7;font-weight:500}.article-card.title-only a{display:block;padding:17px 0}.article-card.title-only a:hover{color:var(--accent)}.home-directory .article-card.title-only h3{font-size:15px}.home-directory .article-card.title-only a{padding:16px 0}
.home-help{display:grid;grid-template-columns:1.65fr 1fr;gap:54px;padding:35px 0 56px;border-top:1px solid var(--line)}.problem-list{border-top:1px solid var(--line)}.problem-list a{display:flex;align-items:center;gap:15px;padding:16px 0;border-bottom:1px solid var(--line)}.problem-list strong{font-size:15px;font-weight:500}.problem-list small{display:block;font-size:12px;color:var(--muted)}.problem-list .num{color:var(--muted);font-size:12px}.problem-list .arrow{margin-left:auto;color:var(--accent)}.home-service{align-self:start;padding:27px 28px 24px;background:var(--soft);border:1px solid var(--line);border-radius:var(--radius)}.home-service h2{font-size:22px;font-weight:650;margin:0 0 10px}.home-service p{color:var(--muted);font-size:14px;margin:0 0 21px}.home-service .button{font-size:13px;min-height:40px;padding:9px 16px}.service-links{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:23px;padding-top:18px;border-top:1px solid #dfdcd7;color:#615c56;font-size:13px}

/* 页脚 */
.site-footer{background:var(--soft);border-top:1px solid var(--line);padding:28px 0 20px;color:var(--muted)}.footer-simple{display:flex;justify-content:space-between;align-items:center;gap:25px}.footer-simple .brand img{width:28px;height:28px}.footer-simple .brand b{font-size:15px;font-weight:600;color:var(--ink)}.footer-links{display:flex;flex-wrap:wrap;gap:11px 23px;font-size:12px}.footer-base{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #e1ded9;margin-top:22px;padding-top:16px;font-size:11px}

/* 栏目与文章 */
.section{padding-top:42px;padding-bottom:48px}.page-head{padding-top:35px;padding-bottom:31px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--muted);margin-bottom:23px}.breadcrumbs a:hover{text-decoration:underline;text-underline-offset:3px}.eyebrow{margin-bottom:9px;color:var(--accent);font-size:12px;font-weight:550}.page-head h1{font-size:34px;font-weight:650;letter-spacing:-.7px;line-height:1.45;margin:0 0 14px;max-width:930px}.page-head .lead{max-width:800px;color:#696560;font-size:15px;line-height:1.9;margin:0}.page-meta{display:flex;flex-wrap:wrap;gap:6px 18px;color:var(--muted);font-size:12px;margin-top:18px}.small-note,.no-js-note{font-size:12px;color:var(--muted);line-height:1.8}.no-js-note{margin:10px 0}.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.filter-button{border:1px solid var(--line);border-radius:4px;padding:6px 15px;background:#fff;color:#615c56;font-size:13px}.filter-button:hover{border-color:#c7b4a9;color:var(--accent)}.filter-button[aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent)}
.article-layout{display:grid;grid-template-columns:minmax(0,800px) 230px;gap:60px;align-items:start;padding-bottom:50px}.article-layout>.prose{grid-column:1;grid-row:1}.article-layout>.toc{grid-column:2;grid-row:1}.prose{font-size:16px;line-height:1.95;overflow-wrap:break-word}.prose h2{font-size:24px;font-weight:650;letter-spacing:-.25px;line-height:1.55;margin:36px 0 15px;padding-top:5px}.prose h3{font-size:18px;font-weight:650;line-height:1.6;margin:23px 0 10px}.prose p{margin:15px 0;color:#45413d}.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.prose a:hover{color:#82391f}.prose ul,.prose ol{padding-left:24px;color:#45413d}.prose li{margin:8px 0}.prose figure{margin:25px 0 30px;background:var(--soft);border:1px solid var(--line);border-radius:4px;overflow:hidden}.prose figure a{display:block}.prose figure a:focus-visible{outline-offset:-3px}.prose figure img{width:100%;height:auto}.prose figcaption{padding:10px 15px;border-top:1px solid var(--line);background:#fff;font-size:12px;line-height:1.7;color:var(--muted)}.callout{margin:20px 0;padding:15px 19px;border-left:3px solid var(--accent);background:var(--soft);font-size:14px;line-height:1.85;color:#5c554e}.callout strong{display:block;color:var(--ink);margin-bottom:4px;font-weight:600}
.step-list{list-style:none!important;padding:0!important;counter-reset:guide}.step-list li{counter-increment:guide;position:relative;margin:0;padding:17px 0 17px 42px;border-bottom:1px solid var(--line)}.step-list li::before{content:counter(guide);position:absolute;left:0;top:18px;color:var(--accent);font-size:13px;font-weight:600;width:26px;height:26px;line-height:26px;text-align:center;border:1px solid #e5d7cd;border-radius:3px}.step-list strong{display:block;font-size:16px;font-weight:600;color:var(--ink)}.step-list p{margin:5px 0!important;font-size:15px}.toc{position:sticky;top:102px;border-left:1px solid var(--line);padding-left:23px;font-size:12px}.toc b{display:block;margin:0 0 14px;font-size:13px;font-weight:600}.toc a{display:block;margin:12px 0;color:var(--muted);line-height:1.7}.toc a:hover{color:var(--accent)}.toc-note{margin-top:22px;padding-top:17px;border-top:1px solid var(--line);font-size:11px;line-height:1.8;color:var(--muted)}.faq details{border-bottom:1px solid var(--line);padding:17px 0}.faq summary{position:relative;padding-right:30px;cursor:pointer;list-style:none;font-size:15px;font-weight:550;line-height:1.75}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"+";position:absolute;right:2px;top:0;color:var(--accent);font-size:19px}.faq details[open] summary::after{content:"−"}.faq details p{font-size:14px;color:#69615a;margin:12px 0 0;line-height:1.9}.sources{font-size:13px}.sources a{overflow-wrap:anywhere}.back-top{display:block;margin-top:27px;text-align:right;font-size:12px}.related{border-top:1px solid var(--line);padding:32px 0 45px}.related h2{font-size:22px;font-weight:650;margin:0 0 21px}.split{display:grid;grid-template-columns:1fr 1fr;gap:28px}.content-panel{padding:25px;margin-bottom:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.content-panel h2{margin-top:0;font-size:21px;font-weight:650;line-height:1.5}.content-panel p{color:#69625a;font-size:14px}.content-panel.prose h2{margin-top:29px}.content-panel.prose h2:first-child{margin-top:0}.narrow{max-width:820px;padding-bottom:48px}

/* 下载、排查和术语 */
.downloads-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.platform{padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.platform .os{font-size:12px;color:var(--accent)}.platform h2{font-size:23px;font-weight:650;margin:7px 0 13px}.platform p,.platform li{font-size:13px;color:#69625a}.platform ul{padding-left:18px;min-height:110px}.platform .button{width:100%;padding:10px 12px;font-size:12px;gap:6px}.notice{padding:17px 21px;margin-bottom:25px;border:1px solid #e6d9cc;border-radius:4px;background:#fcf8f3;color:#79644f;font-size:13px;line-height:1.9}.notice strong{font-weight:600}.diagnostic-box{padding:27px;margin-bottom:29px;border:1px solid var(--line);border-radius:var(--radius);background:var(--soft)}.diagnostic-box label{display:block;margin-bottom:11px;font-size:14px;font-weight:600}.diagnostic-box select{width:100%;padding:11px 13px;background:#fff;border:1px solid #d6d1cb;border-radius:4px;color:var(--ink)}.diagnostic-result{margin-top:17px;padding:13px 18px;border-left:3px solid var(--accent);background:#fff;font-size:14px;line-height:1.85}.diagnostic-result p{margin:0 0 8px}.diagnostic-result a{text-decoration:underline;text-underline-offset:3px;color:var(--accent)}.glossary-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:0}.glossary-item{border:1px solid var(--line);border-radius:var(--radius);padding:23px;background:#fff}.glossary-item dt{font-size:17px;font-weight:600;margin-bottom:8px}.glossary-item dd{margin:0;color:#69625a;font-size:14px;line-height:1.9}.glossary-item a{display:block;color:var(--accent);margin-top:11px;font-size:12px}.table-scroll{overflow:auto;-webkit-overflow-scrolling:touch}table{border-collapse:collapse;width:100%;font-size:13px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:13px 15px;vertical-align:top}th{background:var(--soft);font-size:12px;font-weight:600}td{color:#69625a}

/* 服务排行榜 */
.ranking-head{background:var(--soft);border-bottom:1px solid var(--line)}.ranking-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:32px;align-items:start}.rank-row{display:grid;grid-template-columns:34px minmax(0,1fr);gap:18px;border:1px solid var(--line);border-radius:var(--radius);padding:25px;margin-bottom:17px;background:#fff}.rank-number{font-size:22px;font-weight:550;line-height:1.5;color:#a58b7d;font-variant-numeric:tabular-nums}.rank-row:first-child .rank-number{color:var(--accent)}.rank-title{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:11px}.rank-title h2{margin:0;font-size:21px;font-weight:650}.tag{display:inline-block;padding:3px 7px;border:1px solid #e7ddd6;border-radius:3px;color:#8b5b43;background:#fcf8f5;font-size:11px;line-height:1.5}.rank-row p{margin:10px 0;color:#69625a;font-size:14px;line-height:1.9}.provider-facts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:17px 0}.provider-facts div{background:var(--soft);border-radius:3px;padding:12px 14px;font-size:12px;color:#69625a}.provider-facts b{display:block;font-size:11px;font-weight:550;color:var(--accent);margin-bottom:4px}.chips{display:flex;flex-wrap:wrap;gap:6px;margin:13px 0}.chips span{font-size:11px;border:1px solid var(--line);padding:3px 8px;border-radius:3px;color:var(--muted)}.rank-caution{color:#8a6449!important;font-size:12px!important}.rank-link{color:var(--accent);font-size:12px;text-decoration:underline;text-underline-offset:4px}.ranking-aside{position:sticky;top:100px}.ranking-aside .content-panel{padding:22px}.ranking-aside h2{font-size:17px}.ranking-aside ul{padding-left:18px;color:#69625a;font-size:13px}

/* 站内搜索 */
.search-dialog{width:min(640px,calc(100% - 32px));max-height:85vh;border:1px solid #d4cfc9;border-radius:6px;padding:25px;background:#fff;color:var(--ink)}.search-dialog::backdrop{background:rgb(30 25 21 / 44%)}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px}.dialog-head b{font-size:17px;font-weight:600}.dialog-close{border:0;background:transparent;padding:0 4px;color:var(--muted);font-size:26px;line-height:1}.search-dialog input{width:100%;margin-top:5px;padding:12px;border:1px solid #cfc8c0;border-radius:4px;background:#fff}.search-dialog .search-hint{font-size:12px;color:var(--muted)}.search-results{margin-top:18px;border-top:1px solid var(--line)}.search-results a{display:block;padding:15px 2px;border-bottom:1px solid var(--line)}.search-results strong{display:block;font-size:15px;font-weight:500;line-height:1.7}.search-results small{display:block;margin-top:4px;color:var(--muted);font-size:12px}.empty-state{color:var(--muted);font-size:14px}

@media(max-width:1050px){.header-inner{gap:16px}.nav{gap:19px;font-size:13px}.brand b{font-size:16px}.article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:35px}.home-directory{gap:25px}.home-help{gap:34px}.ranking-layout{grid-template-columns:minmax(0,1fr) 235px;gap:24px}.downloads-grid{gap:16px}.platform{padding:22px}}
@media(max-width:820px){.header-inner{height:66px;gap:15px}.brand img{width:30px;height:30px}.search-open{margin-left:auto}.menu-toggle{display:block}.nav{display:none;position:absolute;top:66px;left:0;right:0;margin:0;padding:9px 32px 13px;border-bottom:1px solid var(--line);background:#fff;flex-direction:column;align-items:stretch;gap:0;font-size:14px}.nav.is-open{display:flex}.nav a{height:auto;padding:11px 0;border-bottom:0}.nav a[aria-current=page]{color:var(--accent);font-weight:600}.home-intro{min-height:0;padding:48px 0 42px}.home-intro h1{font-size:37px}.home-directory{gap:22px}.home-directory .article-card.title-only h3{font-size:14px}.home-help{grid-template-columns:1.45fr 1fr;gap:28px}.home-service{padding:23px}.article-layout{grid-template-columns:1fr;gap:24px}.article-layout>.toc{grid-column:1;grid-row:1}.article-layout>.prose{grid-column:1;grid-row:2}.toc{position:static;padding:17px 20px;background:var(--soft);border:1px solid var(--line);border-radius:4px}.toc b{margin-bottom:8px}.toc a{display:inline-block;margin:4px 14px 4px 0}.toc-note{display:none}.ranking-layout{grid-template-columns:1fr}.ranking-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}.downloads-grid{grid-template-columns:1fr}.platform ul{min-height:0}.platform .button{width:auto;padding-inline:18px}.footer-simple{flex-direction:column;align-items:flex-start;gap:18px}.page-head h1{font-size:30px}}
@media(max-width:600px){.wrap{width:calc(100% - 40px)}html{scroll-padding-top:88px}.header-inner{height:64px;gap:13px}.brand{gap:9px}.brand b{font-size:16px}.brand small{display:none}.search-open{width:32px;height:32px}.nav{top:64px;padding-inline:20px}.home-intro{padding:38px 0 35px}.home-kicker{font-size:14px;margin-bottom:11px}.home-intro h1{font-size:31px;letter-spacing:-.6px;line-height:1.45}.home-summary{font-size:14px;margin-top:13px;line-height:1.85}.actions{gap:10px;margin-top:22px}.button{font-size:13px;padding:10px 16px;min-height:41px}.home-quick{grid-template-columns:1fr 1fr}.home-quick a{font-size:14px;padding:15px 18px}.home-quick a:nth-child(odd){padding-left:0}.home-quick a:nth-child(even){border-right:0}.home-quick a:nth-child(-n+2){border-bottom:1px solid var(--line)}.home-catalog{padding:33px 0 32px}.section-head{gap:14px;margin-bottom:18px}.section-head h2{font-size:22px}.section-head .text-link{font-size:12px}.home-directory{grid-template-columns:1fr;gap:26px}.directory-heading{margin-bottom:9px;font-size:13px}.home-directory .article-card.title-only h3,.article-card.title-only h3{font-size:15px}.home-directory .article-card.title-only a,.article-card.title-only a{padding:15px 0}.home-help{grid-template-columns:1fr;padding:30px 0 37px;gap:30px}.home-service{padding:23px}.home-service h2{font-size:21px}.service-links{margin-top:21px}.site-footer{padding:25px 0 18px}.footer-links{gap:10px 21px}.footer-base{flex-direction:column;gap:5px;margin-top:20px;padding-top:14px}.page-head{padding-top:27px;padding-bottom:26px}.breadcrumbs{font-size:11px;margin-bottom:18px;gap:6px}.page-head h1{font-size:27px;line-height:1.5;letter-spacing:-.4px;margin-bottom:12px}.page-head .lead{font-size:14px}.page-meta{font-size:11px;gap:5px 12px;margin-top:15px}.section{padding-top:28px;padding-bottom:34px}.filter-bar{gap:7px}.filter-button{font-size:12px;padding:6px 12px}.article-layout{padding-bottom:34px;gap:20px}.prose{font-size:15px;line-height:1.95}.prose h2{font-size:22px;margin-top:28px}.prose h3{font-size:17px}.prose figure{margin:22px 0 25px}.prose figcaption{font-size:11px;padding:9px 12px}.callout{padding:13px 16px;font-size:13px}.step-list li{padding-left:38px}.step-list strong{font-size:15px}.step-list p{font-size:14px}.toc{padding:15px 17px}.toc a{font-size:11px}.related{padding:27px 0 34px}.related h2{font-size:21px}.split,.glossary-grid{grid-template-columns:1fr;gap:18px}.content-panel{padding:21px}.content-panel h2{font-size:20px}.diagnostic-box{padding:21px}.diagnostic-box select{font-size:14px}.diagnostic-result{padding:12px 14px;font-size:13px}.glossary-item{padding:21px}.notice{padding:15px 18px;font-size:12px}.rank-row{grid-template-columns:27px minmax(0,1fr);gap:13px;padding:20px 17px}.rank-number{font-size:20px}.rank-title{gap:8px}.rank-title h2{font-size:20px}.provider-facts{grid-template-columns:1fr;gap:8px}.ranking-aside{grid-template-columns:1fr;gap:0}.narrow{padding-bottom:36px}th,td{padding:11px 12px}.search-dialog{padding:21px}.dialog-head b{font-size:16px}.search-results strong{font-size:14px}}
/* 脚本失效时保持导航可用，脚本就绪后再折叠手机菜单。 */
.error-page{padding-block:70px}
.sitemap-tools{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.sitemap-sections{display:grid;grid-template-columns:1fr 2fr;gap:36px;padding-bottom:48px}
.sitemap-sections h2{font-size:22px;margin:0 0 18px}
.sitemap-links{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.sitemap-links li{border-bottom:1px solid var(--line)}
.sitemap-links a{display:block;padding:13px 0;font-size:15px}
@media(max-width:820px){.header-inner{height:auto;min-height:66px;flex-wrap:wrap;padding-block:12px}.nav{display:flex;position:static;order:3;flex:0 0 100%;padding:4px 0 0;border:0}.menu-toggle{display:none}.site-header.nav-ready .header-inner{height:66px;flex-wrap:nowrap;padding-block:0}.site-header.nav-ready .menu-toggle{display:block}.site-header.nav-ready .nav{display:none;position:absolute;top:66px;left:0;right:0;flex:none;padding:9px 32px 13px;border-bottom:1px solid var(--line);max-height:calc(100vh - 66px);max-height:calc(100dvh - 66px);overflow-y:auto}.site-header.nav-ready .nav.is-open{display:flex}.search-dialog input,.diagnostic-box select{font-size:16px}.sitemap-sections{grid-template-columns:1fr;gap:30px}}
@media(max-width:600px){.header-inner{min-height:64px}.site-header.nav-ready .header-inner{height:64px}.site-header.nav-ready .nav{top:64px;padding-inline:20px;max-height:calc(100vh - 64px);max-height:calc(100dvh - 64px)}.error-page{padding-block:48px}.sitemap-sections{padding-bottom:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* 机场排行榜入口文字 */
.nav a[href="/airports/"]:not(.button),.sitemap-links a[href="/airports/"]:not(.button){color:#2457a7}
.nav a[href="/airports/"]:not(.button):hover,.sitemap-links a[href="/airports/"]:not(.button):hover{color:#173f7c}
.nav a[href="/airports/"][aria-current=page]{border-bottom-color:#2457a7}