:root{
  --ink:#1c2024;
  --muted:#58616b;
  --accent:#1b4a6b;
  --accent-dark:#12344d;
  --soft:#f5f6f7;
  --line:#d8dce0;
  --serif:Georgia,"Times New Roman",Times,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font-family:var(--serif);font-size:1.0625rem;line-height:1.75}
img{max-width:100%;height:auto}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px;transition:color .15s ease}
a:hover{color:var(--accent-dark);text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.25;color:var(--ink);margin:0 0 .75rem}
h1{font-size:clamp(2rem,4.5vw,2.75rem);letter-spacing:-.01em}
h2{font-size:clamp(1.5rem,3vw,1.9rem)}
h3{font-size:1.2rem}
p{margin:0 0 1.1rem}
.container{max-width:1040px;margin:0 auto;padding:0 1.5rem}
.prose{max-width:68ch}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:.6rem 1rem;font-family:var(--sans);z-index:10}
.skip:focus{left:0}

/* Header */
.site-header{border-bottom:1px solid var(--line);background:#fff;font-family:var(--sans)}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 2rem;padding-top:1rem;padding-bottom:1rem}
.brand{font-family:var(--serif);font-size:1.15rem;font-weight:700;color:var(--ink);text-decoration:none}
.brand:hover{color:var(--accent)}
.site-header nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.25rem 1.75rem}
.site-header nav a{display:inline-block;padding:.35rem 0;color:var(--ink);font-size:.95rem;text-decoration:none;border-bottom:2px solid transparent;transition:border-color .15s ease,color .15s ease}
.site-header nav a:hover{color:var(--accent);border-bottom-color:var(--line)}
.site-header nav a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}

/* Page structure */
.hero{padding:4.5rem 0 3.5rem}
.hero .lede{font-size:1.2rem;color:var(--muted);max-width:60ch}
.page-title{padding:3.5rem 0 2rem;border-bottom:1px solid var(--line)}
.page-title p{color:var(--muted);font-size:1.1rem;max-width:62ch;margin-bottom:0}
.section{padding:3.5rem 0;border-top:1px solid var(--line)}
.section.first{border-top:0}
.section.soft{background:var(--soft)}
.question{margin:2rem 0 2rem;padding:.25rem 0 .25rem 1.5rem;border-left:4px solid var(--accent);max-width:62ch}
.question .label{display:block;font-family:var(--sans);font-size:.9rem;color:var(--muted);margin-bottom:.35rem}
.question p{font-size:1.3rem;line-height:1.5;margin:0}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}
.btn{display:inline-block;font-family:var(--sans);font-size:.98rem;font-weight:600;text-decoration:none;padding:.7rem 1.4rem;border:2px solid var(--accent);background:var(--accent);color:#fff;border-radius:2px;transition:background .15s ease,color .15s ease,border-color .15s ease}
.btn:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff}
.btn.secondary{background:#fff;color:var(--accent)}
.btn.secondary:hover{background:var(--soft);color:var(--accent-dark)}

/* Pathway */
.pathway{list-style:none;margin:2rem 0 1.5rem;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:2rem}
.pathway li{position:relative;padding:1rem .9rem;background:#fff;border:1px solid var(--line);border-top:3px solid var(--accent);font-family:var(--sans);font-size:.95rem;font-weight:600;line-height:1.35}
.pathway li:not(:last-child)::after{content:"\2192";position:absolute;right:-1.65rem;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.25rem;font-weight:400}
.note{font-size:.98rem;color:var(--muted);max-width:68ch;border-left:3px solid var(--line);padding-left:1rem}

/* Topics */
.topics{display:grid;grid-template-columns:repeat(2,1fr);gap:2.5rem 3rem;margin-top:2rem}
.topic{border-top:2px solid var(--accent);padding-top:1rem}
.topic p{margin-bottom:.9rem}
.more{font-family:var(--sans);font-size:.95rem;font-weight:600}

/* Evidence & About */
.toc{list-style:none;margin:1.5rem 0 0;padding:0;font-family:var(--sans);font-size:.98rem}
.toc li{padding:.35rem 0}
.theme h2{max-width:30ch}
.theme h3,.about-block h3{margin-top:1.75rem;font-size:1.1rem}
.about-block{max-width:68ch}
.about-block ul{padding-left:1.25rem;margin:0 0 1.1rem}
.about-block li{margin-bottom:.5rem}
.resource-list{list-style:none;padding:0;margin:0}
.resource-list li{padding:1rem 0;border-top:1px solid var(--line);margin:0}
.resource-list li:last-child{border-bottom:1px solid var(--line)}
.resource-list strong{display:block;font-family:var(--sans);font-size:1rem}
.source-context{margin-top:1rem}

/* Placeholders (remove once real content is added) */
.placeholder{font-family:var(--sans);font-size:.88rem;background:#fff6dd;border:1px dashed #a67c00;color:#5a4300;padding:.1rem .45rem}
.placeholder-block{display:block;font-family:var(--sans);font-size:.92rem;background:#fff6dd;border:1px dashed #a67c00;color:#5a4300;padding:.75rem 1rem;margin:0 0 1.1rem;max-width:68ch;line-height:1.55}

/* Studies library */
.controls{display:flex;flex-wrap:wrap;gap:1rem 1.5rem;align-items:flex-end;margin:2rem 0 1rem;font-family:var(--sans)}
.controls label{display:block;font-size:.88rem;color:var(--muted);margin-bottom:.3rem}
.controls input,.controls select{font:inherit;font-size:1rem;padding:.6rem .75rem;border:1px solid #8b949e;border-radius:2px;background:#fff;color:var(--ink);min-width:0}
.controls .field-search{flex:1 1 280px}
.controls .field-search input{width:100%}
.controls .field-cat{flex:0 1 220px}
.controls .field-cat select{width:100%}
.count{font-family:var(--sans);font-size:.95rem;color:var(--muted);margin:0 0 1.5rem}
.study{border:1px solid var(--line);border-left:4px solid var(--accent);padding:1.5rem;margin:0 0 1.25rem;background:#fff;transition:border-color .15s ease}
.study:hover{border-color:#aeb6bd;border-left-color:var(--accent)}
.study h3{font-size:1.15rem;margin-bottom:.35rem}
.study .cite{font-family:var(--sans);font-size:.95rem;color:var(--muted);margin:0 0 .75rem}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;margin:0 0 1rem;padding:0;font-family:var(--sans)}
.tags li{font-size:.82rem;color:var(--accent);border:1px solid var(--accent);padding:.05rem .55rem;border-radius:2px}
.study dl{display:grid;grid-template-columns:11rem 1fr;gap:.6rem 1.25rem;margin:0;font-size:.98rem;line-height:1.6}
.study dt{font-family:var(--sans);font-size:.88rem;font-weight:600;color:var(--muted)}
.study dd{margin:0}
.empty{padding:2rem;border:1px solid var(--line);background:var(--soft);font-family:var(--sans)}

/* Footer */
.site-footer{margin-top:3rem;background:var(--soft);border-top:1px solid var(--line);padding:2.5rem 0;font-family:var(--sans);font-size:.92rem;color:var(--muted)}
.site-footer ul{list-style:none;margin:0 0 1.25rem;padding:0;display:flex;flex-wrap:wrap;gap:.4rem 1.5rem}
.site-footer a{color:var(--ink)}
.site-footer a:hover{color:var(--accent)}
.site-footer p{margin:0 0 .35rem;line-height:1.5}

@media (max-width:860px){
  .pathway{grid-template-columns:1fr;gap:2rem;max-width:22rem}
  .pathway li:not(:last-child)::after{content:"\2193";right:auto;left:50%;top:auto;bottom:-1.7rem;transform:translateX(-50%)}
  .topics{grid-template-columns:1fr}
}
@media (max-width:600px){
  body{font-size:1rem}
  .hero{padding:3rem 0 2.5rem}
  .section{padding:2.5rem 0}
  .study{padding:1.1rem}
  .study dl{grid-template-columns:1fr;gap:.1rem}
  .study dd{margin-bottom:.75rem}
  .controls .field-cat{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important}
}