:root{--paper:#fff;--slate:#263c3b;--blue:#335f9b;--blue-deep:#234878;--soft:#eef4f8;--muted:#5b6c68;--line:#d8e1dc;--reading:'Literata',Georgia,serif;--ui:'Source Sans 3',Arial,sans-serif;color-scheme:light}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
.site-body{margin:0;background:var(--paper);color:var(--slate);font:19px/1.6 var(--ui);overflow-wrap:break-word}
a{color:var(--blue);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--blue-deep);text-decoration-thickness:2px}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
[hidden]{display:none!important}
h1,h2,h3{color:var(--slate);font-weight:500;line-height:1.25;margin:0 0 .65em}
h1,h2{font-family:var(--reading)}
h3{font-family:var(--ui);font-weight:600}
p{margin:0 0 1em}
img{max-width:100%;height:auto}
.site-wrap{width:min(100% - 64px,1180px);margin-inline:auto}
.skip-link{position:absolute;top:-100px;left:20px;z-index:20;background:#fff;padding:12px 18px}
.skip-link:focus{top:12px}
.site-header{border-bottom:4px solid var(--blue)}
.masthead{display:flex;align-items:center;justify-content:space-between;gap:30px;min-height:100px}
.wordmark{font:600 28px/1.1 var(--reading);letter-spacing:-1px;color:var(--slate);text-decoration:none;white-space:nowrap}
.reader-menu{display:flex;align-items:center;gap:25px;font-size:17px;line-height:1.3}
.reader-menu a{text-decoration:none;color:var(--slate);padding:10px 0}
.reader-menu a:hover,.reader-menu a[aria-current]{color:var(--blue);text-decoration:underline}
.reader-menu .search-link{color:var(--blue);border-left:1px solid var(--line);padding-left:22px}
.menu-toggle{width:auto;margin:0;padding:8px 14px;border:1px solid var(--blue);border-radius:2px;background:#fff;color:var(--blue);font-weight:600}

.home-lead{display:grid;grid-template-columns:1.05fr 1fr;gap:72px;align-items:center;padding-block:68px 58px}
.home-copy h1{font-size:clamp(42px,4.8vw,65px);line-height:1.14;letter-spacing:-1.6px;max-width:13ch;margin-bottom:25px}
.intro{font-size:24px;line-height:1.55;max-width:48ch}
.home-byline{font-size:17px;color:var(--muted);margin:22px 0}
.home-byline a{color:inherit}
.text-link{font-weight:600;text-decoration:underline}
.guide-photo{margin:0}
.guide-photo img{display:block;width:100%;border-radius:2px}
.guide-photo figcaption{font-size:14px;line-height:1.5;color:var(--muted);margin-top:9px;max-width:66ch}
.start-route{display:grid;grid-template-columns:215px 1fr;gap:40px;background:var(--soft);padding:30px 34px;margin-bottom:54px}
.start-route h2{font-size:27px;margin-bottom:8px}
.start-route p{font-size:17px;margin:0;color:var(--muted)}
.start-route ol{display:grid;grid-template-columns:1fr 1fr;gap:14px 36px;margin:0;padding-left:22px}
.start-route li{padding-left:3px;line-height:1.45;font-size:18px}
.start-route a{color:var(--slate)}
.home-topics{display:grid;grid-template-columns:1.1fr 1fr;gap:88px;margin-bottom:48px}
.home-topics h2{font-size:30px}
.home-topics h3{font-size:22px;margin-top:26px}
.home-topics p{max-width:54ch;color:var(--muted)}
.tool-feature{background:var(--soft);padding:30px 34px;display:flex;align-items:center;gap:45px;justify-content:space-between;margin-bottom:54px}
.tool-feature h2{font-size:26px;margin-bottom:8px}
.tool-feature p{font-size:18px;max-width:65ch;margin:0}
.button-link{display:inline-block;padding:12px 20px;background:var(--blue);color:#fff;border-radius:2px;text-decoration:none;line-height:1.35;font-weight:600;white-space:nowrap}
.button-link:hover{color:#fff;background:var(--blue-deep)}

.archive{padding-block:20px 30px}
.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:4px}
.section-heading h2{font-size:31px;margin:0}
.section-heading>a{font-size:17px}
.guide-row{padding:27px 0;border-bottom:1px solid var(--line);max-width:950px}
.guide-row h2{font:600 25px/1.3 var(--ui);margin-bottom:9px;max-width:55ch}
.guide-row h2 a{text-decoration:none;color:var(--slate)}
.guide-row h2 a:hover{text-decoration:underline;color:var(--blue)}
.guide-row p{max-width:78ch;font-size:18px;color:var(--muted);margin-bottom:8px}
.guide-row .category{font-size:15px;color:var(--blue);margin-bottom:6px}
.guide-row time{font-size:15px;color:var(--muted)}
.archive-pagination{padding-block:24px 45px}
.pagination{display:flex;list-style:none;gap:4px;flex-wrap:wrap;justify-content:center;padding:0;margin:0;font-size:17px}
.pagination a{display:block;min-width:40px;padding:7px 11px;text-align:center;text-decoration:none}
.pagination .active a{color:#fff;background:var(--blue)}
.pagination .disabled a{color:var(--muted)}
.page-heading{padding-block:50px 30px;max-width:950px}
.page-heading h1{font-size:clamp(36px,4.2vw,55px);letter-spacing:-.8px}
.page-heading .intro{margin-bottom:0}
.breadcrumb{font-size:16px;color:var(--muted);margin-bottom:23px}
.breadcrumb a{color:var(--muted)}
.hub-page{padding-bottom:50px}
.reader-note{border-left:4px solid var(--blue);padding:12px 22px;background:var(--soft);max-width:950px;margin-bottom:42px;font-size:17px}
.reader-note p{margin:0}
.hub-picks>h2,.hub-index h2{font-size:29px}
.pick-list{display:grid;grid-template-columns:1fr 1fr;gap:0 70px;max-width:1000px}
.pick-list article{padding-block:20px;border-top:1px solid var(--line)}
.pick-list h3{font-size:23px}
.pick-list p{font-size:18px;max-width:60ch;color:var(--muted)}
.hub-index{margin-top:40px}

.article-page{padding-block:48px 50px}
.article-header{max-width:1000px;padding-bottom:37px}
.article-header h1{font-size:clamp(34px,4vw,52px);line-height:1.2;letter-spacing:-.8px;max-width:30ch}
.article-meta{font-size:16px;color:var(--muted);display:flex;flex-wrap:wrap;gap:5px 24px;margin:20px 0 0}
.article-layout{display:grid;grid-template-columns:210px minmax(0,740px);gap:64px;align-items:start}
.contents{position:sticky;top:25px;font-size:16px;line-height:1.45}
.contents summary{font-weight:600;font-size:18px;cursor:pointer;margin-bottom:15px}
.contents ul{list-style:none;padding:0;margin:0}
.contents li{margin-bottom:11px}
.contents ul ul{padding-left:12px;margin-top:9px}
.contents a{color:var(--muted);text-decoration:none}
.contents a:hover{color:var(--blue);text-decoration:underline}
.article-answer{background:var(--soft);padding:24px 28px;margin-bottom:30px;border-left:4px solid var(--blue)}
.article-answer h2{font:600 20px/1.3 var(--ui);margin:0 0 10px}
.article-answer p{font:21px/1.6 var(--ui);margin:0}
.prose{font:18px/1.85 var(--reading);max-width:73ch}
.prose h2{font-size:29px;margin:1.6em 0 .65em;line-height:1.3;letter-spacing:-.35px}
.prose h3{font-size:24px;margin:1.3em 0 .6em}
.prose li{padding-left:3px;margin-bottom:8px}
.prose ul,.prose ol{padding-left:24px}
.prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;font:17px/1.55 var(--ui);margin:25px 0}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.prose th{background:var(--soft);font-weight:600}
.prose blockquote{margin:25px 0;padding-left:22px;border-left:3px solid var(--line);color:var(--muted)}
.prose iframe{max-width:100%}
.prose pre{overflow:auto;font-size:15px}
.evidence-note{margin-top:38px;background:var(--soft);padding:23px 26px;font-size:17px}
.evidence-note h2{font:600 21px/1.35 var(--ui)}
.evidence-note p{margin-bottom:12px}
.evidence-note summary{cursor:pointer;color:var(--blue)}
.evidence-note li{margin-bottom:8px}
.related-reading{border-top:1px solid var(--line);padding-top:28px;margin-top:32px}
.related-reading h2{font-size:26px}
.related-reading ul{padding-left:20px}
.related-reading li{margin-bottom:10px}
.author-note{font-size:17px;color:var(--muted);border-top:1px solid var(--line);padding-top:24px;margin-top:30px}
.general-reading{max-width:800px}
.general-page .article-header{max-width:900px}
.general-page .intro{font-size:22px}
.general-reading .bkmc{font-family:var(--ui)}

.search-page{max-width:950px;padding-bottom:90px;min-height:60vh}
.search-page label{display:block;margin:8px 0;font-weight:600;font-size:20px}
.search-row{display:flex;gap:10px}
.search-row input{flex:1;min-width:0;border:1px solid var(--muted);border-radius:2px;padding:14px 16px;background:#fff;color:var(--slate)}
.search-row button{border:1px solid var(--blue);border-radius:2px;background:var(--blue);color:#fff;padding:12px 24px}
.search-page #search-status{font-size:17px;color:var(--muted);margin-top:18px}
.search-result{padding:24px 0;border-bottom:1px solid var(--line)}
.search-result h2{font:600 26px/1.35 var(--ui)}
.search-result p{max-width:75ch;font-size:18px;color:var(--muted);margin:0}
.site-body .bk-signup{padding:36px 32px 52px;margin:0 auto;max-width:1180px}
.site-body .bk-signup-inner{max-width:none;padding:30px 34px;border:0;border-radius:2px;background:var(--soft)}
.site-body .bk-signup-leaf{display:none}
.site-body .bk-signup-h{font:500 27px/1.3 var(--reading);color:var(--slate);margin:0 0 10px}
.site-body .bk-signup-p{max-width:75ch;font-size:18px;color:var(--muted)}
.site-body .bk-signup-form{max-width:700px;gap:10px}
.site-body .bk-signup-input,.site-body .fb-form input[type=email]{border-radius:2px;border-color:var(--muted);font-family:var(--ui);font-size:18px}
.site-body .bk-signup-btn,.site-body .fb-form button{background:var(--blue);border-radius:2px;font:600 18px var(--ui);padding:12px 22px;width:auto;margin:0}
.site-body .bk-signup-note,.site-body .fb-note{color:var(--muted);font:15px/1.5 var(--ui)}
.site-body .freebiebox{border:1px solid var(--line);border-left:4px solid var(--blue);background:var(--soft);border-radius:2px;padding:25px 28px;margin:32px 0;font-family:var(--ui)}
.site-body .fb-eyebrow{text-transform:none;letter-spacing:0;color:var(--blue);font-size:16px}
.site-body .freebiebox h3{font-size:24px;color:var(--slate)}
.site-body .freebiebox p{color:var(--muted)}
.site-footer{padding:42px 0 30px!important;background:var(--slate);color:#fff;font:17px/1.6 var(--ui)!important}
.site-footer .wordmark{color:#fff;font-size:26px}
.footer-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:32px 70px}
.site-footer p{margin:12px 0 0;color:#e0e9e5}
.site-footer a{color:#fff}
.site-footer nav{display:flex;align-content:flex-start;flex-wrap:wrap;gap:12px 25px}
.site-footer .footer-note{grid-column:1/-1;font-size:15px;color:#d6e1dd;max-width:85ch}

/* The original calculator markup and scripts are retained inside this shell. */
.site-body.tool-page{--ink:var(--slate);--bg:#fff;--card:#fff;--line:#d8e1dc;--green:#335f9b;--green-deep:#234878;--muted:#5b6c68;--warn:#9a3b2f}
.tool-content{padding-block:24px 30px}
.tool-content>.breadcrumb{margin-bottom:10px}
.tool-page .tool-content .wrap{max-width:900px;margin:auto;padding:16px 32px 40px}
.tool-content h1{font:500 clamp(30px,3.6vw,46px)/1.25 var(--reading);color:var(--slate);margin:16px 0 16px}
.tool-content h2{font-family:var(--reading)}
.tool-content .card{border-radius:2px;border-color:var(--line);box-shadow:none}
.tool-content input,.tool-content select,.tool-content textarea{font-family:var(--ui);color:var(--slate);background:#fff;border-radius:2px}
.tool-content label{font-family:var(--ui);font-size:17px;color:var(--slate)}
.tool-content button{border-radius:2px;font-family:var(--ui)}
.tool-content .lede{font-size:21px}
.tool-content p{max-width:78ch}
.tool-content .disc,.tool-content .note{font:16px/1.6 var(--ui);color:var(--muted)}
.tool-content .macro .name{text-transform:none;letter-spacing:0}
.tool-content .bar>div{transition:none}

@media(min-width:901px){.menu-toggle{display:none}
}
@media(max-width:1050px){.reader-menu{gap:17px;font-size:16px}
.wordmark{font-size:25px}
.masthead{gap:20px}
.home-lead{gap:42px}
.home-copy h1{font-size:53px}
.home-topics{gap:50px}
.article-layout{gap:35px;grid-template-columns:190px minmax(0,1fr)}
}
@media(max-width:900px){.site-wrap{width:calc(100% - 40px)}
.masthead{flex-wrap:wrap;min-height:82px;padding-block:20px;gap:20px}
.reader-menu{width:100%;flex-wrap:wrap;gap:6px 24px;font-size:18px;padding-bottom:5px}
.reader-menu[data-open=false]{display:none}
.reader-menu .search-link{border:0;padding-left:0}
.home-lead{grid-template-columns:1.1fr 1fr;gap:30px;padding-block:42px}
.home-copy h1{font-size:44px}
.intro{font-size:21px}
.start-route{grid-template-columns:1fr;gap:20px;padding:26px}
.article-layout{grid-template-columns:1fr;gap:24px}
.contents{position:static;padding:18px 22px;border:1px solid var(--line)}
.contents nav>nav>ul{columns:2;column-gap:28px}
.contents li{break-inside:avoid}
.article-header{padding-bottom:25px}
.article-reading{max-width:760px}
.tool-feature{gap:25px}
.button-link{white-space:normal}
.pick-list{gap:0 40px}
}
@media(max-width:600px){.site-wrap{width:calc(100% - 36px)}
.masthead{padding-block:18px}
.wordmark{font-size:25px}
.home-lead{grid-template-columns:1fr;gap:28px;padding:35px 0}
.home-copy h1{font-size:45px;max-width:14ch;letter-spacing:-1px}
.home-byline{margin-block:17px}
.home-lead .guide-photo{max-width:520px}
.home-lead img{max-height:280px;object-fit:cover}
.guide-photo figcaption{font-size:13px}
.intro{font-size:22px}
.start-route{margin-bottom:35px;padding:24px}
.start-route ol{grid-template-columns:1fr;gap:14px}
.home-topics{grid-template-columns:1fr;gap:32px;margin-bottom:34px}
.home-topics h2{font-size:29px}
.tool-feature{display:block;padding:24px;margin-bottom:32px}
.tool-feature .button-link{margin-top:20px}
.section-heading{display:block;padding-bottom:16px}
.section-heading>a{display:inline-block;margin-top:10px}
.section-heading h2{font-size:28px}
.guide-row{padding:23px 0}
.guide-row h2{font-size:24px}
.guide-row p{font-size:18px}
.page-heading{padding-block:32px 24px}
.page-heading h1{font-size:36px}
.pick-list{grid-template-columns:1fr}
.hub-picks>h2,.hub-index h2{font-size:27px}
.reader-note{padding:16px 18px}
.article-page{padding-block:30px}
.article-header h1{font-size:35px;letter-spacing:-.5px}
.article-meta{display:block;line-height:1.7}
.article-meta span{display:block}
.contents nav>nav>ul{columns:1}
.article-answer{padding:21px 20px}
.article-answer p{font-size:20px}
.prose{font-size:17px;line-height:1.85}
.prose h2{font-size:26px}
.prose table{font-size:16px}
.prose th,.prose td{padding:10px 12px;min-width:100px}
.evidence-note{padding:22px 20px}
.site-body .freebiebox{padding:22px 20px}
.site-body .bk-signup{padding:28px 18px 35px}
.site-body .bk-signup-inner{padding:25px 22px}
.site-body .bk-signup-h{font-size:25px}
.footer-layout{grid-template-columns:1fr;gap:28px}
.site-footer .footer-note{grid-column:auto}
.search-row{gap:8px}
.search-row input{padding:12px;min-width:0;width:100%}
.search-row button{padding:12px 16px}
.search-page label{font-size:19px}
.search-page{padding-bottom:50px}
.tool-page .tool-content .wrap{padding:12px 18px 25px}
.tool-content h1{font-size:32px}
.tool-content .lede{font-size:20px}
.tool-content .card{padding:18px}
.tool-content .addrow{flex-wrap:wrap}
.tool-content .addrow>div{min-width:180px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
*,*::before,*::after{transition:none!important;animation:none!important}
}
@media print{.site-header,.skip-link,.site-footer,.bk-signup,.freebiebox,.contents,.archive-pagination,.menu-toggle{display:none!important}
.site-wrap{width:100%;max-width:none}
.article-layout{display:block}
.prose{max-width:none}
.article-answer,.evidence-note{background:#fff;border:1px solid #777}
a{color:#000}
.article-header h1{font-size:28pt}
.prose{font-size:11pt}
.tool-content{padding:0}
}


.site-body.tool-page .tool-content{--ink:#263c3b;--bg:#fff;--card:#fff;--line:#d8e1dc;--green:#335f9b;--green-deep:#234878;--muted:#5b6c68;--warn:#9a3b2f;font-family:var(--ui);color:var(--slate);background:#fff}
.tool-content .meter span{background:var(--blue)}


.article-reading>.guide-photo{margin:0 0 30px}
.article-reading>.guide-photo img{max-height:380px;object-fit:cover}


.site-body .bkmc{font-family:var(--ui);border-radius:2px;border-color:var(--line);color:var(--slate);max-width:none}

.site-body .bkmc-label,.site-body .bkmc-cal-u,.site-body .bkmc-m-l{text-transform:none;letter-spacing:0;color:var(--muted);font-size:16px}

.site-body .bkmc-input,.site-body .bkmc-toggle{border-radius:2px;border-color:var(--muted)}

.site-body .bkmc-toggle button.is-on{background:var(--blue)}

.site-body .bkmc-cal-n,.site-body .bkmc-m-p .bkmc-m-g,.site-body .bkmc-note a{color:var(--blue)}

.site-body .bkmc-macro{background:var(--soft);border-radius:2px}

.site-body .bkmc-note{color:var(--muted);font-size:16px}

.site-body .bkmc-note a{white-space:normal}

.site-body .bkmc-input:focus-visible{outline:3px solid var(--blue);outline-offset:3px;box-shadow:none}
.site-body .bk-signup-input:focus-visible,.site-body .fb-form input[type=email]:focus-visible{outline:3px solid var(--blue);outline-offset:3px;box-shadow:none;border-color:var(--blue)}
.site-body .bk-signup-btn:hover,.site-body .fb-form button:hover{background:var(--blue-deep);opacity:1}

/* Let signup columns shrink; the provider renders its supported compact widget. */
.site-body .bk-signup-inner,.site-body .bk-signup-form,.site-body .freebiebox,.site-body .fb-form,.article-layout>*,.footer-layout>*{min-width:0}
.site-body .bk-signup-form>*,.site-body .fb-form>*{min-width:0}