/* FHSA Guide — editorial stylesheet */
:root{
  --paper:#f6f3ec;
  --paper-2:#efeadf;
  --ink:#1b1f1c;
  --ink-2:#4a504b;
  --ink-3:#7a7f79;
  --rule:#d9d2c3;
  --pine:#1f3a2e;
  --pine-2:#2d5141;
  --clay:#b5532b;
  --clay-soft:#f1e1d6;
  --white:#fffdf8;
  --serif:"Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans:"Inter", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --measure:68ch;
  --radius:3px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.7 var(--sans);font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--pine);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--clay)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--ink);color:var(--white);padding:8px 12px;z-index:10}

/* ---------- masthead ---------- */
.topbar{border-bottom:1px solid var(--rule);font-size:12.5px;letter-spacing:.04em;color:var(--ink-3)}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding:8px 24px}
.masthead{border-bottom:1px solid var(--ink)}
.masthead .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 24px}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.brand-mark{font:600 26px/1 var(--serif);letter-spacing:-.02em}
.brand-mark em{font-style:italic;font-weight:400;color:var(--clay)}
.brand-tag{font-size:12px;color:var(--ink-3);letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;gap:26px;font-size:14.5px}
.nav a{color:var(--ink);text-decoration:none;padding:4px 0;border-bottom:1px solid transparent}
.nav a:hover,.nav a[aria-current="page"]{border-color:var(--clay);color:var(--ink)}
.nav-toggle{display:none;background:none;border:1px solid var(--ink);padding:6px 10px;font:500 13px var(--sans);border-radius:var(--radius)}
.wrap{max-width:1180px;margin:0 auto}

/* ---------- home ---------- */
.hero{padding:72px 24px 56px;border-bottom:1px solid var(--rule)}
.hero .wrap{display:grid;grid-template-columns:1.35fr 1fr;gap:64px;align-items:end;padding:0}
.eyebrow{font:600 12px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--clay);margin:0 0 18px}
.hero h1{font:400 clamp(40px,5.4vw,68px)/1.02 var(--serif);letter-spacing:-.025em;margin:0 0 22px;font-variation-settings:"opsz" 144}
.hero h1 em{color:var(--pine-2)}
.hero p.lede{font-size:19px;color:var(--ink-2);max-width:52ch;margin:0}
.figures{border-top:1px solid var(--ink);display:grid;grid-template-columns:1fr 1fr}
.figure{padding:18px 0 16px;border-bottom:1px solid var(--rule)}
.figure:nth-child(odd){padding-right:20px;border-right:1px solid var(--rule)}
.figure:nth-child(even){padding-left:20px}
.figure b{display:block;font:400 38px/1.05 var(--serif);letter-spacing:-.02em;font-variant-numeric:lining-nums}
.figure span{font-size:13px;color:var(--ink-3)}
.figures-note{grid-column:1/-1;font-size:12px;color:var(--ink-3);padding-top:10px}

.section{padding:64px 24px}
.section-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--ink);padding-bottom:12px;margin-bottom:28px}
.section-head h2{font:400 30px/1.1 var(--serif);margin:0;letter-spacing:-.015em}
.section-head span{font-size:13px;color:var(--ink-3)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.card{padding:26px 26px 30px 0;border-bottom:1px solid var(--rule);text-decoration:none;color:var(--ink);display:block}
.grid .card:not(:nth-child(3n+1)){padding-left:26px;border-left:1px solid var(--rule)}
.card .num{font:500 12px var(--mono);color:var(--clay)}
.card h3{font:400 24px/1.2 var(--serif);margin:10px 0 10px;letter-spacing:-.01em}
.card p{margin:0;color:var(--ink-2);font-size:15.5px}
.card:hover h3{color:var(--pine-2);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:56px;background:var(--pine);color:var(--paper);padding:56px;border-radius:var(--radius)}
.feature h2{font:400 36px/1.1 var(--serif);margin:0 0 14px;color:var(--white)}
.feature p{color:#cfd8d2;margin:0 0 22px}
.btn{display:inline-block;background:var(--clay);color:var(--white);text-decoration:none;padding:13px 22px;font:600 14.5px var(--sans);border-radius:var(--radius);letter-spacing:.01em}
.btn:hover{background:#9c4422;color:var(--white)}
.btn-ghost{background:transparent;border:1px solid currentColor;color:inherit}
.feature ol{margin:0;padding:0;list-style:none;counter-reset:s}
.feature li{counter-increment:s;padding:14px 0 14px 44px;border-top:1px solid rgba(255,255,255,.14);position:relative;color:#e4ebe6}
.feature li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:15px;font:500 13px var(--mono);color:#e7a27f}

/* ---------- article ---------- */
.crumbs{font-size:13px;color:var(--ink-3);padding:22px 24px 0}
.crumbs a{color:var(--ink-3)}
.article-head{padding:28px 24px 36px;border-bottom:1px solid var(--rule)}
.article-head .inner{max-width:820px}
.article-head h1{font:400 clamp(34px,4.4vw,54px)/1.06 var(--serif);letter-spacing:-.022em;margin:0 0 18px}
.article-head .dek{font-size:20px;line-height:1.55;color:var(--ink-2);margin:0 0 22px;max-width:60ch}
.byline{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px;color:var(--ink-3)}
.byline strong{color:var(--ink);font-weight:600}
.layout{display:grid;grid-template-columns:220px minmax(0,1fr) 300px;gap:56px;padding:40px 24px 80px}
.toc{position:sticky;top:24px;align-self:start;font-size:14px}
.toc h2{font:600 11.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 12px}
.toc ol{list-style:none;padding:0;margin:0;border-left:1px solid var(--rule)}
.toc a{display:block;padding:6px 0 6px 14px;color:var(--ink-2);text-decoration:none;margin-left:-1px;border-left:1px solid transparent}
.toc a:hover{color:var(--ink);border-color:var(--clay)}
.prose{max-width:var(--measure)}
.prose>p:first-of-type::first-letter{float:left;font:400 64px/.82 var(--serif);padding:6px 10px 0 0;color:var(--pine)}
.prose h2{font:400 31px/1.15 var(--serif);letter-spacing:-.015em;margin:56px 0 16px;padding-top:18px;border-top:1px solid var(--rule);scroll-margin-top:20px}
.prose h3{font:600 18px/1.35 var(--sans);margin:32px 0 8px}
.prose p,.prose li{color:#262b27}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:6px 0}
.prose li::marker{color:var(--clay)}
.prose strong{font-weight:650}
.keybox{background:var(--white);border:1px solid var(--rule);border-top:3px solid var(--pine);padding:22px 26px;margin:28px 0}
.keybox h2,.keybox h3{margin:0 0 10px!important;padding:0!important;border:0!important;font:600 12px var(--sans)!important;letter-spacing:.14em;text-transform:uppercase;color:var(--pine)}
.keybox ul{margin:0;padding-left:18px}
.callout{border-left:3px solid var(--clay);background:var(--clay-soft);padding:16px 20px;margin:26px 0;font-size:16px}
.callout p{margin:0}
.callout strong{color:#7d3519}
table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;font-variant-numeric:tabular-nums}
caption{text-align:left;font:600 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding-bottom:10px}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--rule);vertical-align:top}
thead th{border-bottom:1.5px solid var(--ink);font-weight:600;font-size:13.5px}
tbody tr:hover{background:var(--paper-2)}
.table-scroll{overflow-x:auto}
.faq details{border-bottom:1px solid var(--rule);padding:4px 0}
.faq summary{cursor:pointer;font:500 17px/1.4 var(--sans);padding:14px 28px 14px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:10px;font:300 24px var(--sans);color:var(--clay)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 16px;color:var(--ink-2)}
.sources{font-size:14px;color:var(--ink-2);border-top:1px solid var(--ink);margin-top:56px;padding-top:16px}
.sources h2{font:600 12px var(--sans)!important;letter-spacing:.14em;text-transform:uppercase;margin:0 0 8px!important;border:0!important;padding:0!important}
.sources ol{padding-left:18px;margin:0}
.aside{align-self:start;position:sticky;top:24px;display:flex;flex-direction:column;gap:24px}
.aside-card{background:var(--white);border:1px solid var(--rule);padding:22px}
.aside-card h3{font:400 21px/1.2 var(--serif);margin:0 0 8px}
.aside-card p{font-size:14.5px;color:var(--ink-2);margin:0 0 14px}
.aside-card ul{list-style:none;padding:0;margin:0;font-size:14.5px}
.aside-card li{border-top:1px solid var(--rule);padding:9px 0}
.aside-card li a{text-decoration:none;color:var(--ink)}
.aside-card li a:hover{color:var(--clay)}
.ad-slot{min-height:250px}
.ad-label{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);text-align:center;margin-bottom:6px}

/* ---------- calculator ---------- */
.layout.no-toc{grid-template-columns:minmax(0,1fr) 300px}
.no-toc .prose{max-width:none}
.no-toc .prose>p,.no-toc .prose>ul,.no-toc .prose>h2,.no-toc .prose>.faq{max-width:var(--measure)}
.no-toc .prose>p:first-of-type::first-letter{all:unset}
.calc{display:grid;grid-template-columns:1fr 1.15fr;gap:0;border:1px solid var(--ink);background:var(--white);margin:8px 0 32px}
.calc-in{padding:28px;border-right:1px solid var(--rule)}
.calc-out{padding:28px;background:var(--paper-2)}
.field{margin-bottom:18px}
.field label{display:flex;justify-content:space-between;font:600 13.5px var(--sans);margin-bottom:7px}
.field label output{font:500 14px var(--mono);color:var(--pine)}
.field input[type=number],.field select{width:100%;padding:11px 12px;border:1px solid #bfb7a6;background:var(--paper);font:500 16px var(--sans);border-radius:var(--radius);color:var(--ink)}
.field input[type=range]{width:100%;accent-color:var(--pine)}
.field small{display:block;color:var(--ink-3);font-size:12.5px;margin-top:5px;line-height:1.45}
.result-big{font:400 52px/1 var(--serif);letter-spacing:-.02em;margin:6px 0 4px;color:var(--pine);font-variant-numeric:lining-nums}
.result-label{font:600 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.result-row{display:flex;justify-content:space-between;border-top:1px solid var(--rule);padding:10px 0;font-size:15px}
.result-row b{font-variant-numeric:tabular-nums}
.chart{display:flex;align-items:flex-end;gap:4px;height:150px;margin:22px 0 8px;border-bottom:1px solid var(--ink)}
.chart div{flex:1;background:var(--pine-2);position:relative;min-height:2px}
.chart div i{position:absolute;bottom:0;left:0;right:0;background:var(--clay)}
.legend{display:flex;gap:16px;font-size:12.5px;color:var(--ink-3)}
.legend span::before{content:"";display:inline-block;width:10px;height:10px;margin-right:6px;vertical-align:-1px}
.legend .c::before{background:var(--clay)}.legend .g::before{background:var(--pine-2)}

/* ---------- footer ---------- */
.footer{background:var(--ink);color:#bdbfb9;font-size:14px;padding:56px 24px 32px}
.footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.footer .brand-mark{color:var(--paper)}
.footer h4{font:600 11.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:#8d918a;margin:0 0 12px}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{padding:4px 0}
.footer a{color:#e3e2dc;text-decoration:none}
.footer a:hover{color:#e7a27f}
.footer .fine{grid-column:1/-1;border-top:1px solid #343833;padding-top:20px;margin-top:8px;font-size:12.5px;color:#8d918a;line-height:1.6}

/* ---------- simple pages ---------- */
.page{max-width:760px;padding:24px 24px 80px}
.page h1{font:400 46px/1.08 var(--serif);letter-spacing:-.02em;margin:18px 0 18px}
.page h2{font:400 26px/1.2 var(--serif);margin:36px 0 10px}

@media (max-width:1100px){
  .layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
  .toc{display:none}
}
@media (max-width:860px){
  .layout.no-toc{grid-template-columns:1fr}
  body{font-size:16.5px}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);flex-direction:column;gap:0;border-bottom:1px solid var(--ink);padding:8px 24px;z-index:5}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--rule)}
  .masthead .wrap{position:relative}
  .nav-toggle{display:block}
  .brand-tag{display:none}
  .hero .wrap,.feature,.calc{grid-template-columns:1fr}
  .hero{padding:44px 20px 40px}
  .feature{padding:32px 24px;gap:28px}
  .grid{grid-template-columns:1fr}
  .grid .card:not(:nth-child(3n+1)){padding-left:0;border-left:0}
  .layout{grid-template-columns:1fr;padding:28px 20px 60px}
  .aside{position:static}
  .calc-in{border-right:0;border-bottom:1px solid var(--rule)}
  .footer .wrap{grid-template-columns:1fr;gap:28px}
  .topbar .hide-sm{display:none}
}
@media print{.nav,.aside,.ad-slot,.footer,.topbar{display:none}}