:root{
  --bg: #0F1620;
  --panel: #16202C;
  --panel-2: #1C2733;
  --line: #263241;
  --ink: #EDEAE3;
  --muted: #8B96A3;
  --amber: #E8A33D;
  --teal: #4FD1C5;
  --radius: 3px;
  --maxw: 920px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'IBM Plex Sans', sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Fraunces', serif;
  font-weight:600;
  line-height:1.15;
  letter-spacing:-0.01em;
  color:var(--ink);
}
a{color:var(--teal); text-decoration:none;}
a:hover{color:var(--amber);}
a:focus-visible, button:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
}
code, .mono{font-family:'IBM Plex Mono', monospace;}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px;}

header.site{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, var(--bg), rgba(15,22,32,0.9));
  position:sticky; top:0; z-index:20;
  backdrop-filter:blur(6px);
}
.nav-top{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding-top:16px; padding-bottom:14px;
}
.brand{display:flex; align-items:baseline; gap:8px;}
.brand-mark{
  font-family:'IBM Plex Mono', monospace;
  font-size:11px; color:var(--amber);
  border:1px solid var(--amber); border-radius:2px;
  padding:2px 5px; letter-spacing:0.05em;
}
.brand-name{font-family:'Fraunces', serif; font-size:20px; font-weight:600;}
nav.links{
  display:flex; gap:22px; flex-wrap:wrap; align-items:center;
  border-top:1px solid var(--line); padding-top:12px; padding-bottom:14px;
}
nav.links a{
  color:var(--muted); font-size:14px; display:flex; align-items:center; gap:6px;
}
nav.links a:hover{color:var(--ink);}
.tag{
  font-family:'IBM Plex Mono', monospace; font-size:10px; color:var(--teal);
  border:1px solid var(--line); padding:1px 4px; border-radius:2px;
}

#site-search{position:relative; flex-shrink:0;}
#site-search-input{
  width:220px; background:var(--panel); border:1px solid var(--line); border-radius:4px;
  color:var(--ink); font-family:'IBM Plex Sans', sans-serif; font-size:13.5px;
  padding:8px 10px 8px 32px; transition:width 0.18s ease, border-color 0.18s ease;
}
#site-search-input::placeholder{color:var(--muted);}
#site-search-input:focus{outline:none; border-color:var(--teal); width:260px;}
#site-search svg{
  position:absolute; left:10px; top:50%; transform:translateY(-50%);
  width:14px; height:14px; stroke:var(--muted); pointer-events:none;
}
#site-search-results{
  display:none; position:absolute; top:calc(100% + 8px); right:0; width:340px;
  background:var(--panel-2); border:1px solid var(--line); border-radius:6px;
  box-shadow:0 12px 32px rgba(0,0,0,0.45); overflow:hidden; z-index:30;
  max-height:70vh; overflow-y:auto;
}
#site-search-results.show{display:block;}
.search-result{
  display:flex; flex-direction:column; gap:3px; padding:12px 14px;
  border-bottom:1px solid var(--line);
}
.search-result:last-child{border-bottom:none;}
.search-result:hover{background:var(--panel);}
.search-result-cat{font-family:'IBM Plex Mono', monospace; font-size:10.5px; color:var(--amber);}
.search-result-title{font-size:14px; color:var(--ink);}
.search-empty, .search-more{padding:14px; font-size:13px; color:var(--muted);}

@media (max-width: 640px){
  .nav-top{flex-wrap:wrap; row-gap:12px;}
  #site-search{width:100%;}
  #site-search-input{width:100%;}
  #site-search-input:focus{width:100%;}
  #site-search-results{width:100%;}
  nav.links{gap:16px 20px;}
}

.hero{padding:64px 0 40px; border-bottom:1px solid var(--line); position:relative;}
.hero .eyebrow{
  font-family:'IBM Plex Mono', monospace; color:var(--amber); font-size:13px;
  letter-spacing:0.08em; text-transform:uppercase; margin-bottom:14px; display:block;
}
.hero h1{font-size:44px; max-width:640px; margin:0 0 18px;}
.hero p.lede{color:var(--muted); max-width:520px; font-size:17px; margin:0 0 8px;}

.grid-section{padding:56px 0; position:relative;}
.section-head{display:flex; align-items:baseline; justify-content:space-between; margin-bottom:28px; gap:16px; flex-wrap:wrap;}
.section-head h2{font-size:26px; margin:0;}
.section-head .count{font-family:'IBM Plex Mono', monospace; color:var(--muted); font-size:13px;}

.trace-grid{
  display:grid; grid-template-columns:repeat(2, 1fr); gap:0;
  border-top:1px solid var(--line); border-left:1px solid var(--line);
}
.card{
  display:block; border-right:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:26px; position:relative; transition:background 0.15s ease;
}
.card:hover{background:var(--panel);}
.card::before{
  content:"";
  position:absolute; top:26px; left:0; width:8px; height:8px;
  border-radius:50%; background:var(--line); transform:translateX(-50%);
  border:1px solid var(--bg);
}
.card:hover::before{background:var(--amber);}
.card .ref{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--teal); display:block; margin-bottom:10px;}
.card h3{font-size:19px; margin:0 0 10px;}
.card p{color:var(--muted); font-size:14.5px; margin:0 0 14px;}
.card .read{font-size:13px; font-family:'IBM Plex Mono', monospace; color:var(--teal); display:inline-block; transition:color 0.15s ease, transform 0.15s ease;}
.card:hover .read{color:var(--amber); transform:translateX(3px);}

@media (max-width: 680px){
  .trace-grid{grid-template-columns:1fr;}
  .hero h1{font-size:32px;}
}

.category-grid{
  display:grid; grid-template-columns:repeat(4, 1fr); gap:14px;
}
.cat-card{
  border:1px solid var(--line); border-radius:6px; background:var(--panel);
  padding:24px 22px; position:relative; transition:transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
  display:flex; flex-direction:column; overflow:hidden;
}
.cat-card::before{
  content:""; position:absolute; top:0; left:0; right:0; height:2px;
  background:linear-gradient(90deg, var(--teal), var(--amber));
  transform:scaleX(0); transform-origin:left; transition:transform 0.2s ease;
}
.cat-card:hover{
  background:var(--panel-2); border-color:transparent;
  transform:translateY(-4px); box-shadow:0 10px 28px rgba(0,0,0,0.4);
}
.cat-card:hover::before{transform:scaleX(1);}
.cat-card .ref{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--amber); display:block; margin-bottom:12px;}
.cat-card h3{font-size:17px; margin:0 0 8px; color:var(--ink);}
.cat-card p{color:var(--muted); font-size:13px; margin:0 0 16px; flex-grow:1;}
.cat-card .cat-count{
  font-family:'IBM Plex Mono', monospace; font-size:11.5px; color:var(--muted);
  display:flex; align-items:center; justify-content:space-between;
  padding-top:14px; border-top:1px solid var(--line);
}
.cat-card .cat-count .arrow{color:var(--teal); transition:transform 0.18s ease, color 0.18s ease; font-size:14px;}
.cat-card:hover .cat-count{border-top-color:var(--panel-2);}
.cat-card:hover .cat-count .arrow{transform:translateX(4px); color:var(--amber);}

@media (max-width: 880px){
  .category-grid{grid-template-columns:repeat(2, 1fr);}
}
@media (max-width: 480px){
  .category-grid{grid-template-columns:1fr;}
}

.empty-category{
  border:1px dashed var(--line); border-radius:var(--radius);
  padding:36px 26px; text-align:left;
}
.empty-category .ref{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--teal); display:block; margin-bottom:12px;}
.empty-category p{color:var(--muted); font-size:15px; margin:0 0 16px; max-width:520px;}
.empty-category .read{font-family:'IBM Plex Mono', monospace; font-size:13px;}

.breadcrumb{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--muted); margin-bottom:16px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb .sep{margin:0 7px; color:var(--line);}
.breadcrumb .current{color:var(--muted);}
.article-head{padding:52px 0 28px; border-bottom:1px solid var(--line);}
.article-head .eyebrow{font-family:'IBM Plex Mono', monospace; color:var(--amber); font-size:12px; letter-spacing:0.06em; text-transform:uppercase;}
.article-head h1{font-size:34px; margin:14px 0 10px;}
.meta{color:var(--muted); font-size:13px; font-family:'IBM Plex Mono', monospace;}
.article-body{padding:36px 0 60px; max-width:680px;}
.article-body h2{font-size:22px; margin-top:36px;}
.article-body p{margin:0 0 18px; color:#D9D4C8;}
.article-body ul, .article-body ol{margin:0 0 18px; padding-left:22px; color:#D9D4C8;}
.article-body li{margin-bottom:8px;}
.callout{
  border-left:2px solid var(--amber); background:var(--panel);
  padding:16px 18px; font-size:14.5px; color:var(--muted); margin:24px 0;
}

.static-page{padding:52px 0 70px; max-width:720px;}
.static-page h1{font-size:34px; margin-bottom:10px;}
.static-page .eyebrow{font-family:'IBM Plex Mono', monospace; color:var(--amber); font-size:12px; text-transform:uppercase; letter-spacing:0.06em;}
.static-page h2{font-size:20px; margin-top:34px;}
.static-page p, .static-page li{color:#D9D4C8;}
.static-page ul{padding-left:20px;}

footer.site{border-top:1px solid var(--line); padding:36px 0; margin-top:40px;}
.footer-inner{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px;}
.footer-links{display:flex; gap:18px; flex-wrap:wrap;}
.footer-links a{color:var(--muted); font-size:13px;}
.footer-links a:hover{color:var(--ink);}
.copyright{color:var(--muted); font-size:12.5px; font-family:'IBM Plex Mono', monospace;}

#cookie-banner{
  position:fixed; left:0; right:0; bottom:0; z-index:100;
  background:var(--panel-2); border-top:1px solid var(--line);
  padding:16px 24px; display:none;
}
#cookie-banner.show{display:block;}
.cookie-inner{
  max-width:var(--maxw); margin:0 auto; display:flex; align-items:center;
  justify-content:space-between; gap:20px; flex-wrap:wrap;
}
.cookie-inner p{margin:0; font-size:13.5px; color:var(--muted); max-width:600px;}
.cookie-inner p a{color:var(--teal);}
.cookie-actions{display:flex; gap:10px; flex-shrink:0;}
.btn{
  font-family:'IBM Plex Mono', monospace; font-size:12.5px; letter-spacing:0.03em;
  padding:9px 16px; border-radius:2px; cursor:pointer; border:1px solid var(--line);
  background:transparent; color:var(--muted);
}
.btn:hover{color:var(--ink); border-color:var(--muted);}
.btn.primary{background:var(--amber); color:#12100B; border-color:var(--amber); font-weight:600;}
.btn.primary:hover{background:#f0b357;}

/* ---- Featured article section ---- */
.featured-section{padding:48px 0 8px; border-bottom:1px solid var(--line);}
.featured-grid{display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-bottom:44px;}
.featured-card{
  display:grid; grid-template-columns:1fr; gap:0;
  border:1px solid var(--line); margin-bottom:0; position:relative;
  background:var(--panel);
}
.featured-card::before{
  content:"FEATURED"; position:absolute; top:-1px; left:-1px;
  background:var(--amber); color:#12100B; font-family:'IBM Plex Mono', monospace;
  font-size:10.5px; font-weight:600; letter-spacing:0.08em; padding:5px 10px;
}
.featured-media{
  background:linear-gradient(135deg, var(--panel-2), var(--bg));
  display:flex; align-items:center; justify-content:center;
  padding:40px; min-height:160px; border-right:none; border-bottom:1px solid var(--line);
  position:relative; overflow:hidden;
}
.featured-media .fm-mark{
  font-family:'Fraunces', serif; font-weight:600; font-size:15vw; line-height:1;
  color:var(--line); user-select:none;
}
.featured-body{padding:32px 32px; display:flex; flex-direction:column; justify-content:center;}
.featured-body .eyebrow{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--amber); letter-spacing:0.06em; text-transform:uppercase; margin-bottom:12px; display:block;}
.featured-body h3{font-size:22px; margin:0 0 12px; line-height:1.25;}
.featured-body p{color:var(--muted); font-size:14.5px; margin:0 0 20px;}
.featured-body .read{font-family:'IBM Plex Mono', monospace; font-size:13.5px;}

@media (max-width: 900px){
  .featured-grid{grid-template-columns:1fr; gap:32px;}
}

@media (max-width: 720px){
  .featured-media{min-height:140px; padding:24px;}
  .featured-media .fm-mark{font-size:22vw;}
  .featured-body{padding:28px 24px;}
}