/* ============================================================
   QUILLON — blog / insights
   Editorial reading layer built on the Quillon design system.
   Shared by blog.html (index) and every post in /blog.
   ============================================================ */

/* ---------- INDEX : hero ---------- */
.bloghub{
  background:radial-gradient(125% 92% at 50% -8%, var(--paper-hi) 0%, var(--paper) 58%, var(--paper-2) 100%);
  padding-top:8.5rem;
  border-bottom:1px solid var(--ink-line);
}
.bloghub__head{ max-width:46rem; }
.bloghub h1{ font-size:clamp(2.8rem,6vw,5rem); margin:.4em 0 .3em; }
.bloghub h1 .em{ font-style:italic; color:var(--tick); }
.bloghub .lede{ max-width:48ch; }

/* ---------- INDEX : featured ---------- */
.feat{ background:var(--paper); }
.feat__card{
  display:grid; grid-template-columns:1.05fr .95fr; gap:0;
  border:1px solid var(--ink-line); border-radius:4px; overflow:hidden;
  background:var(--paper-hi); box-shadow:var(--shadow-paper);
  transition:transform .5s var(--ease), box-shadow .5s var(--ease);
}
.feat__card:hover{ transform:translateY(-4px); box-shadow:0 30px 60px -24px rgba(26,20,10,.4); }
.feat__art{
  position:relative; min-height:24rem; overflow:hidden;
  background:
    repeating-linear-gradient(135deg, rgba(34,80,63,.05) 0 14px, transparent 14px 28px),
    linear-gradient(140deg, var(--tick-deep), var(--tick) 70%);
  display:flex; align-items:flex-end; padding:2rem;
}
.feat__art .mark{
  position:absolute; right:-4%; top:-12%; width:62%; opacity:.14;
  fill:none; stroke:var(--paper-hi); stroke-width:1;
}
.feat__art .ftag{
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--tick-hi); border:1px solid rgba(207,231,220,.4); padding:.4em .8em; border-radius:2px;
  background:rgba(19,17,11,.2); position:relative; z-index:2;
}
.feat__body{ padding:clamp(2rem,3.5vw,3.4rem); display:flex; flex-direction:column; justify-content:center; }
.feat__body .eyebrow{ margin-bottom:1.4rem; }
.feat__body h2{ font-size:clamp(1.7rem,2.8vw,2.6rem); line-height:1.05; }
.feat__body h2 a:hover{ color:var(--tick); }
.feat__body p{ color:var(--t-body); margin:1.1rem 0 1.7rem; font-size:1.06rem; }
.feat__meta{ display:flex; gap:1rem; align-items:center; font-family:var(--font-mono); font-size:.76rem; color:var(--t-mute); letter-spacing:.03em; flex-wrap:wrap; }
.feat__meta .dotsep{ width:3px; height:3px; border-radius:50%; background:var(--tick); opacity:.6; }
@media(max-width:820px){ .feat__card{ grid-template-columns:1fr; } .feat__art{ min-height:14rem; } }

/* ---------- INDEX : grid ---------- */
.posts{ background:var(--paper-2); }
.posts__head{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom:2.6rem; flex-wrap:wrap; gap:1rem; }
.posts__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.6rem; }
.pc{
  display:flex; flex-direction:column; background:var(--paper-hi);
  border:1px solid var(--ink-line); border-radius:4px; overflow:hidden;
  transition:transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s;
}
.pc:hover{ transform:translateY(-5px); box-shadow:0 24px 44px -22px rgba(26,20,10,.34); border-color:var(--tick-soft); }
.pc__art{
  height:8.5rem; position:relative; overflow:hidden;
  border-bottom:1px solid var(--ink-line);
  display:flex; align-items:flex-end; padding:1.1rem;
}
.pc__art--a{ background:linear-gradient(135deg,#26352c,#22503f); }
.pc__art--b{ background:linear-gradient(135deg,#2d281d,#46412f); }
.pc__art--c{ background:linear-gradient(135deg,#1f3a4a,#264a5a); }
.pc__art--d{ background:linear-gradient(135deg,#3c2f3a,#5a3f50); }
.pc__art--e{ background:linear-gradient(135deg,#22503f,#3d6e57); }
.pc__art::after{
  content:""; position:absolute; inset:0; opacity:.5;
  background:repeating-linear-gradient(135deg, rgba(255,255,255,.05) 0 10px, transparent 10px 20px);
}
.pc__cat{
  position:relative; z-index:2; font-family:var(--font-mono); font-size:.64rem;
  letter-spacing:.2em; text-transform:uppercase; color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.3); padding:.32em .7em; border-radius:2px;
}
.pc__body{ padding:1.5rem 1.6rem 1.7rem; display:flex; flex-direction:column; flex:1; }
.pc__body h3{ font-size:1.24rem; line-height:1.16; margin-bottom:.6rem; }
.pc__body h3 a:hover{ color:var(--tick); }
.pc__body p{ font-size:.95rem; color:var(--t-body); margin-bottom:1.3rem; }
.pc__meta{ margin-top:auto; font-family:var(--font-mono); font-size:.72rem; color:var(--t-mute); letter-spacing:.02em; display:flex; gap:.7rem; align-items:center; }
.pc__meta .dotsep{ width:3px; height:3px; border-radius:50%; background:var(--tick); opacity:.6; }
@media(max-width:900px){ .posts__grid{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:600px){ .posts__grid{ grid-template-columns:1fr; } }

/* ---------- INDEX : topics strip ---------- */
.topics{ background:var(--paper); }
.topics__row{ display:flex; flex-wrap:wrap; gap:.7rem; margin-top:1.8rem; }
.topic{
  font-family:var(--font-mono); font-size:.8rem; letter-spacing:.03em;
  padding:.55em 1em; border:1px solid var(--ink-line); border-radius:2px;
  color:var(--t-body); background:var(--paper-hi); transition:all .3s var(--ease);
}
.topic:hover{ border-color:var(--tick); color:var(--tick); background:var(--tick-glow); }

/* ============================================================
   POST PAGE
   ============================================================ */
.post{ background:var(--paper); padding-top:7rem; }
.post__wrap{ width:100%; max-width:50rem; margin:0 auto; padding:0 clamp(1.4rem,4vw,2rem); }

/* breadcrumb */
.crumb{ font-family:var(--font-mono); font-size:.74rem; letter-spacing:.04em; color:var(--t-mute); display:flex; gap:.5em; align-items:center; padding:1.4rem 0 0; flex-wrap:wrap; }
.crumb a{ color:var(--t-mute); transition:color .3s; }
.crumb a:hover{ color:var(--tick); }
.crumb .sep{ opacity:.5; }

/* post header */
.post__head{ padding:1.8rem 0 2.2rem; border-bottom:1px solid var(--ink-line); }
.post__head .eyebrow{ margin-bottom:1.3rem; }
.post__head h1{ font-size:clamp(2.1rem,4.4vw,3.4rem); line-height:1.04; letter-spacing:-.02em; }
.post__byline{ display:flex; gap:1rem; align-items:center; margin-top:1.8rem; flex-wrap:wrap; font-family:var(--font-mono); font-size:.78rem; color:var(--t-mute); letter-spacing:.02em; }
.post__author{ display:flex; gap:.7rem; align-items:center; }
.post__avatar{
  width:34px; height:34px; border-radius:50%; flex:none;
  background:linear-gradient(140deg,var(--tick),var(--tick-deep));
  display:grid; place-items:center; color:var(--paper-hi);
  font-family:var(--font-serif); font-size:.92rem; font-weight:600;
}
.post__byline .who{ color:var(--t-strong); font-weight:500; }
.post__byline .dotsep{ width:3px; height:3px; border-radius:50%; background:var(--tick); opacity:.6; }

/* TL;DR */
.tldr{
  margin:2.4rem 0; padding:1.6rem 1.8rem;
  background:var(--tick-glow); border:1px solid var(--tick-soft); border-left:3px solid var(--tick);
  border-radius:3px;
}
.tldr .lbl{ font-family:var(--font-mono); font-size:.7rem; letter-spacing:.22em; text-transform:uppercase; color:var(--tick); display:block; margin-bottom:.7rem; }
.tldr p{ font-size:1.08rem; line-height:1.55; color:var(--t-strong); font-family:var(--font-serif); }
[data-theme="dark"] .tldr .lbl{ color:var(--tick-soft); }

/* prose */
.prose{ padding:1rem 0 1rem; }
.prose > *{ max-width:100%; }
.prose h2{
  font-size:clamp(1.5rem,2.6vw,2.05rem); line-height:1.1; margin:2.8rem 0 .9rem;
  padding-top:.6rem; scroll-margin-top:6rem;
}
.prose h3{ font-size:clamp(1.2rem,1.9vw,1.45rem); margin:2rem 0 .7rem; }
.prose p{ font-size:1.075rem; line-height:1.72; color:var(--t-body); margin-bottom:1.2rem; }
.prose p.lead-answer{ color:var(--t-strong); font-size:1.12rem; }
.prose a{ color:var(--tick); border-bottom:1px solid var(--tick-soft); padding-bottom:1px; transition:border-color .3s, background .3s; }
.prose a:hover{ border-color:var(--tick); background:var(--tick-glow); }
.prose strong{ color:var(--t-strong); font-weight:600; }
.prose em{ font-style:italic; }
.prose ul, .prose ol{ margin:0 0 1.4rem 1.3rem; }
.prose li{ font-size:1.075rem; line-height:1.66; color:var(--t-body); margin-bottom:.55rem; padding-left:.3rem; }
.prose ul li::marker{ color:var(--tick); }
.prose ol li::marker{ color:var(--tick); font-family:var(--font-mono); font-size:.9em; }
.prose blockquote{
  margin:1.8rem 0; padding:.4rem 0 .4rem 1.6rem; border-left:3px solid var(--tick);
  font-family:var(--font-serif); font-style:italic; font-size:1.25rem; line-height:1.4; color:var(--t-strong);
}

/* data table */
.prose .tablewrap{ margin:1.8rem 0; overflow-x:auto; border:1px solid var(--ink-line); border-radius:4px; }
.prose table{ width:100%; border-collapse:collapse; font-size:.98rem; background:var(--paper-hi); }
.prose th, .prose td{ text-align:left; padding:.85rem 1.1rem; border-bottom:1px solid var(--ink-line); vertical-align:top; }
.prose th{ font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--tick); background:var(--tick-glow); font-weight:500; }
.prose tr:last-child td{ border-bottom:0; }
.prose td b{ color:var(--t-strong); }

/* callout / key takeaways */
.callout{
  margin:2.2rem 0; padding:1.6rem 1.8rem; background:var(--paper-hi);
  border:1px solid var(--ink-line); border-radius:4px;
}
.callout .lbl{ font-family:var(--font-mono); font-size:.7rem; letter-spacing:.2em; text-transform:uppercase; color:var(--tick); display:flex; align-items:center; gap:.6em; margin-bottom:1rem; }
.callout .lbl::before{ content:""; width:22px; height:1px; background:var(--tick); }
.callout ul{ margin:0 0 0 1.2rem; }
.callout li{ margin-bottom:.6rem; }

/* stat row */
.statrow{ display:grid; grid-template-columns:repeat(3,1fr); gap:1rem; margin:2.2rem 0; }
.statrow .s{ background:var(--paper-hi); border:1px solid var(--ink-line); border-radius:4px; padding:1.4rem 1.5rem; }
.statrow .s .n{ font-family:var(--font-serif); font-size:2.1rem; font-weight:600; color:var(--tick); line-height:1; letter-spacing:-.02em; }
[data-theme="dark"] .statrow .s .n{ color:var(--tick-soft); }
.statrow .s .l{ font-size:.86rem; color:var(--t-mute); margin-top:.5rem; line-height:1.4; }
@media(max-width:640px){ .statrow{ grid-template-columns:1fr; } }

/* FAQ */
.faq{ margin:3rem 0 1rem; padding-top:2.4rem; border-top:1px solid var(--ink-line); }
.faq > .eyebrow{ margin-bottom:1.6rem; display:inline-flex; }
.faq__item{ border-bottom:1px solid var(--ink-line); }
.faq__q{
  width:100%; text-align:left; background:none; border:0; cursor:pointer;
  padding:1.3rem 2.6rem 1.3rem 0; position:relative;
  font-family:var(--font-serif); font-size:1.18rem; font-weight:500; color:var(--t-strong); line-height:1.25;
}
.faq__q::after{
  content:""; position:absolute; right:.3rem; top:1.55rem; width:13px; height:13px;
  border-right:1.6px solid var(--tick); border-bottom:1.6px solid var(--tick);
  transform:rotate(45deg); transition:transform .35s var(--ease);
}
.faq__item.open .faq__q::after{ transform:rotate(-135deg); top:1.85rem; }
.faq__a{ max-height:0; overflow:hidden; transition:max-height .4s var(--ease); }
.faq__a p{ font-size:1.03rem; line-height:1.68; color:var(--t-body); padding:0 0 1.4rem; margin:0; }
.faq__item.open .faq__a{ max-height:600px; }

/* post CTA */
.postcta{
  margin:3.4rem 0 1rem; padding:clamp(2rem,4vw,3rem);
  background:var(--ink-900); border-radius:6px; color:var(--on-ink); position:relative; overflow:hidden;
}
.postcta::before{
  content:""; position:absolute; right:-8%; top:-30%; width:46%; aspect-ratio:1;
  background:radial-gradient(circle, rgba(34,80,63,.4), transparent 70%);
}
.postcta .eyebrow{ color:var(--tick-soft); }
.postcta .eyebrow::before{ background:var(--tick-soft); }
.postcta h3{ color:var(--paper-hi); font-size:clamp(1.5rem,2.6vw,2.1rem); line-height:1.08; margin:1rem 0 .8rem; max-width:20ch; position:relative; }
.postcta h3 .em{ font-style:italic; color:var(--tick-soft); }
.postcta p{ color:var(--on-ink-mute); max-width:46ch; margin-bottom:1.8rem; position:relative; }
.postcta__btns{ display:flex; gap:1rem; flex-wrap:wrap; position:relative; }

/* author box */
.authorbox{
  margin:2.6rem 0; padding:1.6rem 1.8rem; display:flex; gap:1.2rem; align-items:flex-start;
  background:var(--paper-hi); border:1px solid var(--ink-line); border-radius:4px;
}
.authorbox .post__avatar{ width:46px; height:46px; font-size:1.15rem; }
.authorbox .ab__name{ font-family:var(--font-serif); font-size:1.15rem; color:var(--t-strong); font-weight:600; }
.authorbox .ab__role{ font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--tick); margin:.2rem 0 .6rem; }
.authorbox p{ font-size:.95rem; color:var(--t-body); line-height:1.55; margin:0; }

/* updated note */
.updated{ font-family:var(--font-mono); font-size:.74rem; color:var(--t-mute); letter-spacing:.02em; margin-top:1.4rem; display:flex; align-items:center; gap:.5em; }
.updated::before{ content:""; width:7px; height:7px; border-radius:50%; background:var(--tick); }

/* related posts */
.related{ background:var(--paper-2); border-top:1px solid var(--ink-line); }
.related__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.4rem; margin-top:2rem; }
@media(max-width:780px){ .related__grid{ grid-template-columns:1fr; } }

/* progress bar */
.readbar{ position:fixed; top:0; left:0; height:3px; background:var(--tick); width:0; z-index:500; transition:width .1s linear; }

/* in-article inline cite */
.cite{ font-size:.82em; color:var(--t-mute); }
.cite a{ color:var(--t-mute); border-bottom-color:var(--ink-line); }