/* SemiVon shared styles for detail pages (phase 1, style option S1).
   The homepage keeps its own inline styles; keep the shared tokens below in step with it. */

/* Fonts: system font stacks only for now. Self-hosted font files (with their licenses)
   will be added later; no external font requests are made. */

:root{
  --bg:#F6F4EF; --surface:#FFFFFF; --ink:#1E2125; --ink-2:#4A4F56; --ink-3:#5A5F66;
  --line:#E2DED5; --line-2:#CFC9BD; --dark:#02040C; --panel:#1E2125;
  --accent:#1D4F91; --accent-hover:#153B6D;
  --display:'Space Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif;
  --sans:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --pad:120px; --section:88px;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent)}a:hover{color:var(--accent-hover)}
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.02em;margin:0}
p{margin:0}
.wrap{width:100%;max-width:1440px;margin:0 auto;padding-inline:var(--pad)}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:6px;font-size:15px;font-weight:600;text-decoration:none;border:1.5px solid transparent;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);color:#fff}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}.btn-outline:hover{background:var(--ink);color:#fff}
.btn-light{background:var(--bg);color:var(--ink)}.btn-light:hover{background:#fff;color:var(--ink)}

/* header (same look as homepage) */
.site-header{position:sticky;top:0;z-index:50;background:var(--dark)}
.site-header .wrap{height:80px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand img{height:46px;width:auto}
.nav{display:flex;align-items:center;gap:36px}
.nav a{color:#E6E8EE;text-decoration:none;font-size:15px;font-weight:500}
.nav a:hover{color:#fff;text-decoration:underline;text-underline-offset:6px}
.nav a[aria-current="page"]{color:#fff;text-decoration:underline;text-underline-offset:6px}
.header-cta{display:flex;align-items:center;gap:10px}
.menu-btn{display:none;width:44px;height:44px;border:1px solid #2A3040;border-radius:6px;background:transparent;align-items:center;justify-content:center;cursor:pointer}

/* breadcrumb + page hero */
.breadcrumb{padding-top:32px;font-size:14px;color:var(--ink-3)}
.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.breadcrumb li+li::before{content:"›";margin-right:8px;color:var(--line-2)}
.breadcrumb a{color:var(--ink-3)}
.page-hero{padding-block:40px 64px;border-bottom:1px solid var(--line)}
.page-hero .inner{max-width:860px;display:flex;flex-direction:column;gap:20px}
.page-hero h1{font-size:56px;line-height:1.06;letter-spacing:-.025em}
.page-hero .lead{font-size:19px;line-height:1.6;color:var(--ink-2)}

/* article body */
.content{padding-block:64px var(--section)}
.prose{max-width:760px}
.prose section{padding-top:40px}
.prose section:first-child{padding-top:0}
.prose h2{font-size:30px;line-height:1.2;margin-bottom:16px}
.prose h3{font-size:19px;line-height:1.35;margin:24px 0 8px}
.prose p+p{margin-top:14px}
.prose p,.prose li{color:var(--ink-2)}
.prose strong{color:var(--ink)}
.prose ul,.prose ol{margin:12px 0 0;padding-left:22px}
.prose li+li{margin-top:6px}
.prose ul+p,.prose ol+p,.prose .cards+p{margin-top:14px}
.note{margin-top:14px;font-size:15px;color:var(--ink-3)}

.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;padding:0;list-style:none}
.chips li{margin:0 !important;padding:10px 16px;border:1px solid var(--line-2);border-radius:999px;font-size:15px;font-weight:500;background:var(--surface);color:var(--ink)}
.chips li span{display:block;font-size:13px;font-weight:400;color:var(--ink-3)}

.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:16px}
.card{padding:24px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.card h3{margin:0 0 8px;font-size:19px}
.card p{font-size:15px}

.table-wrap{margin-top:16px;overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;vertical-align:top;padding:14px 16px;border-bottom:1px solid var(--line)}
th{font-weight:600;color:var(--ink);background:#FBFAF7}
td{color:var(--ink-2)}
tr:last-child td{border-bottom:0}

.steps{list-style:none;counter-reset:step;padding:0 !important;margin-top:16px !important}
.steps li{counter-increment:step;position:relative;padding:14px 0 14px 48px;border-top:1px solid var(--line);margin:0 !important}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:15px;font-family:var(--mono);font-size:14px;color:var(--accent)}

.terms{display:grid;gap:16px;margin-top:16px}
.term{padding:20px 22px;border-radius:10px;border:1px solid var(--line);background:var(--surface)}
.term h3{margin:0 0 6px;font-size:17px}
.term p{font-size:15px}

.faq{margin-top:8px}
.faq h3{font-family:var(--sans);font-size:17px;font-weight:600;letter-spacing:0;margin:22px 0 6px}

.cta-band{margin-top:56px;padding:32px;border-radius:12px;background:var(--panel);color:#F6F4EF;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:26px;color:#F6F4EF;margin:0}
.cta-band p{color:#C9C5BC;margin-top:6px;font-size:15px}
.related{margin-top:16px;display:flex;flex-wrap:wrap;gap:12px}
.related a{font-weight:600}

/* footer (same look as homepage) */
.site-footer{background:var(--dark);color:#E6E8EE;padding-block:72px 48px}
.site-footer a{color:#E6E8EE}
.foot-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;row-gap:40px}
.foot-co{grid-column:span 4;display:flex;flex-direction:column;gap:12px}
.foot-co img{width:300px;margin-left:-10px}
.foot-co .name{font-family:var(--display);font-size:19px;font-weight:600;padding-top:6px}
.muted-d{color:#A9AEBA;font-size:15px}
.foot-links{grid-column:5 / span 3;display:flex;flex-direction:column;gap:10px;font-size:15px}
.foot-contact{grid-column:8 / span 3;display:flex;flex-direction:column;gap:10px;font-size:15px}
.label-d{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#7D8391}
.foot-qr{grid-column:11 / span 2;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.qr-box{padding:8px;border-radius:8px;background:#fff}
.qr-box img{width:120px;height:120px}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:56px;padding-top:24px;border-top:1px solid #1E2433;font-size:14px;color:#7D8391}

/* ---------- tablet ---------- */
@media (max-width:1180px){
  :root{--pad:48px}
  .nav{gap:24px}
  .foot-co{grid-column:span 6}
  .foot-links{grid-column:7 / span 6}
  .foot-contact{grid-column:span 6}
  .foot-qr{grid-column:7 / span 6;align-items:flex-start}
}
/* ---------- mobile ---------- */
@media (max-width:900px){
  :root{--pad:20px;--section:56px}
  html{scroll-padding-top:80px}
  body{font-size:16px}
  .site-header .wrap{height:64px}
  .brand img{height:34px;margin-left:-8px}
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--dark);border-top:1px solid #1E2433;padding:8px 20px 16px}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid #1E2433;font-size:16px}
  .header-cta .btn{min-height:44px;padding:0 14px;font-size:14px}
  .breadcrumb{padding-top:20px}
  .page-hero{padding-block:24px 40px}
  .page-hero h1{font-size:36px;line-height:1.1}
  .page-hero .lead{font-size:17px}
  .content{padding-block:40px var(--section)}
  .prose h2{font-size:24px}
  .cards{grid-template-columns:1fr}
  th,td{padding:12px}
  .cta-band{padding:24px 20px}
  .cta-band .btn{width:100%}
  .foot-co,.foot-links,.foot-contact,.foot-qr{grid-column:1 / -1}
  .foot-co img{width:260px}
  .foot-qr{flex-direction:row;align-items:center;gap:16px}
  .foot-bottom{flex-direction:column;margin-top:32px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ---------- Insights (list cards, related blocks, articles) ---------- */
.ins-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:16px}
.ins-list{margin-top:0}
.ins-card{display:flex;flex-direction:column;gap:10px;padding:24px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.ins-meta{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink-3)}
.ins-cat{color:var(--accent);text-transform:uppercase}
.ins-card .ins-title{font-family:var(--display);font-size:20px;line-height:1.3;margin:0;letter-spacing:-.01em}
.ins-card .ins-title a{color:var(--ink);text-decoration:none}
.ins-card .ins-title a:hover{text-decoration:underline;text-underline-offset:4px}
.ins-card p{font-size:15px;color:var(--ink-2)}
.ins-more{margin-top:auto;font-size:15px;font-weight:600;text-decoration:none;min-height:32px;display:inline-flex;align-items:center}
.ins-more:hover{text-decoration:underline}
.related-insights{margin-top:56px}
.related-insights h2{font-size:26px}
.more-insights{max-width:980px}

.byline{font-size:15px;color:var(--ink-3)}
.post-body h2{margin-top:44px}
.post-body>p+p{margin-top:14px}
.method-note{padding:14px 16px;border-left:3px solid var(--line-2);background:#FBFAF7;font-size:14px !important;color:var(--ink-3) !important;margin-bottom:28px}
.observed{margin:18px 0;padding:18px 20px;border-radius:10px;background:#EEF2F8;border:1px solid #D6DFEC}
.observed-label{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.observed p{color:var(--ink) !important}
.observed p+p{margin-top:10px}
sup a{text-decoration:none;font-size:12px;padding-left:2px}
.pull{margin:18px 0 !important;padding-left:18px;border-left:3px solid var(--accent);font-family:var(--display);font-size:21px;line-height:1.4;color:var(--ink) !important}
.flowline{margin:14px 0 !important;padding:12px 16px;border-radius:8px;background:var(--surface);border:1px solid var(--line);font-family:var(--mono);font-size:14px;color:var(--ink) !important;overflow-wrap:anywhere}
.qlist li{margin-top:12px !important}
.about-box{margin-top:48px;padding:24px;border-radius:10px;border:1px solid var(--line);background:var(--surface)}
.about-box h2{margin-top:0 !important;font-size:22px}
.about-box p+p{margin-top:10px}
.post-foot{margin-top:48px;padding-top:8px;border-top:1px solid var(--line)}
.post-foot h2{font-size:22px;margin-top:28px !important}
.sources{font-size:14px}
.sources li{overflow-wrap:anywhere}
.disclaimer{margin-top:24px !important;font-size:14px;color:var(--ink-3) !important}
@media (max-width:900px){
  .pull{font-size:18px}
  .ins-card{padding:20px}
}
.ins-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:40px;row-gap:10px;align-items:start;padding:32px}
.ins-feature .ins-meta,.ins-feature .ins-title{grid-column:1}
.ins-feature p,.ins-feature .ins-more{grid-column:2}
.ins-feature p{grid-row:1 / span 2;font-size:16px}
.ins-feature .ins-more{grid-row:3}
.source-note{margin-top:12px !important;font-size:14px}
@media (max-width:900px){.ins-feature{display:flex;padding:20px}}