:root{
  --bg:#FFFFFF;
  --band:#F3F6FA;
  --band-2:#EAF0F6;
  --ink:#16232E;
  --ink-soft:#54636F;
  --ink-faint:#8A97A2;
  --accent:#3E5C76;
  --accent-deep:#2A4459;
  --accent-tint:#EAF1F7;
  --teal:#1F8A8F;
  --line:#E1E8EF;
  --line-strong:#CBD6E0;
  --head:'Libre Franklin',system-ui,sans-serif;
  --body:'Public Sans',system-ui,sans-serif;
  --maxw:1180px;
  --shadow:0 1px 2px rgba(22,35,46,.04),0 12px 32px -18px rgba(22,35,46,.22);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16.5px;line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--accent);color:#fff}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--head);letter-spacing:-.02em;line-height:1.15}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 40px}

/* ---------- NAV (shared with home) ---------- */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:15px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:40px;height:40px;flex:none;display:block}
.brand-mark rect.bg{fill:var(--accent)}
.brand-mark .mono{fill:#fff}
.brand-mark .pulse-line{stroke:#8FC6C9;stroke-width:2.1;fill:none;stroke-linecap:round;stroke-linejoin:round}
.brand-word{display:flex;flex-direction:column;line-height:1}
.brand-name{font-family:var(--head);font-weight:800;font-size:17.5px;letter-spacing:-.02em;color:var(--ink)}
.brand-tag{font-family:var(--head);font-weight:600;font-size:9px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-top:3px}
@media(max-width:520px){.brand-tag{display:none}}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}
.nav-cta{background:var(--accent);color:#fff!important;border-radius:8px;padding:10px 18px;transition:background .2s}
.nav-cta:hover{background:var(--accent-deep)}
@media(max-width:820px){.nav-links a:not(.nav-cta){display:none}}

/* ---------- POST ---------- */
.post{padding:clamp(40px,6vw,72px) 0 clamp(48px,7vw,96px)}
.post-head-wrap{max-width:820px}
.back{display:inline-block;font-family:var(--head);font-weight:600;font-size:14px;color:var(--accent);margin-bottom:26px}
.back:hover{color:var(--accent-deep)}
.post-cat{display:inline-flex;align-items:center;gap:10px;font-family:var(--head);font-weight:700;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.post-cat .tick{width:26px;height:4px;border-radius:2px;background:var(--teal)}
.post h1{font-weight:800;font-size:clamp(30px,4.4vw,52px);letter-spacing:-.03em;line-height:1.08}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:13px;margin-top:24px;color:var(--ink-soft);font-size:14.5px;font-family:var(--head);font-weight:500}
.post-meta .dot{color:var(--line-strong)}
.byline{display:flex;align-items:center;gap:12px}
.byline .avatar{width:44px;height:44px;flex:none;border-radius:50%;object-fit:cover;border:2px solid var(--bg);box-shadow:0 0 0 1px var(--line-strong)}
.byline .who{display:flex;flex-direction:column;line-height:1.25}
.byline .who .name{font-family:var(--head);font-weight:700;font-size:15px;color:var(--ink)}
.byline .who .sub{font-size:13px;color:var(--ink-soft);display:flex;flex-wrap:wrap;gap:7px;align-items:center}
.byline .who .sub .dot{color:var(--line-strong)}
.post-hero{display:block;width:100%;max-width:1000px;margin:clamp(28px,4vw,44px) auto 0;height:auto;border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow)}

/* share buttons */
.share{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:44px 0 8px;padding-top:26px;border-top:1px solid var(--line)}
.share .label{font-family:var(--head);font-weight:700;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin-right:4px}
.share a,.share button{display:inline-flex;align-items:center;gap:8px;font-family:var(--body);font-weight:600;font-size:14px;color:var(--ink-soft);background:var(--bg);border:1px solid var(--line-strong);border-radius:8px;padding:9px 14px;cursor:pointer;transition:all .18s}
.share a:hover,.share button:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-tint)}
.share svg{width:17px;height:17px;flex:none}
.share .copied{border-color:var(--teal);color:var(--teal);background:#EAF6F6}

/* author bio card */
.author-card{margin-top:48px;padding:28px 30px;border:1px solid var(--line);border-radius:16px;background:var(--band);display:flex;gap:22px;align-items:center}
.author-card .aimg{width:76px;height:76px;flex:none;border-radius:50%;object-fit:cover;border:3px solid var(--bg);box-shadow:0 0 0 1px var(--line-strong),var(--shadow)}
.author-card .abody{flex:1;min-width:0}
.author-card .akicker{font-family:var(--head);font-weight:700;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:5px}
.author-card h3{font-weight:800;font-size:20px;color:var(--ink);margin-bottom:7px}
.author-card p{font-size:15px;color:var(--ink-soft);line-height:1.55;margin:0}
.author-card .alinks{display:flex;gap:16px;margin-top:12px}
.author-card .alinks a{font-family:var(--head);font-weight:600;font-size:14px;color:var(--accent)}
.author-card .alinks a:hover{color:var(--accent-deep)}
@media(max-width:560px){.author-card{flex-direction:column;align-items:flex-start;text-align:left}}

.post-body{max-width:720px;margin-top:clamp(30px,4vw,48px)}
.post-body p{color:var(--ink-soft);font-size:18px;line-height:1.72;margin-bottom:24px}
.post-body .lede{font-family:var(--head);font-weight:500;font-size:clamp(20px,2.3vw,24px);line-height:1.5;letter-spacing:-.01em;color:var(--ink);margin-bottom:34px}
.post-body strong{color:var(--ink);font-weight:700}
.post-body em{font-style:italic}
.post-body h2{font-weight:800;font-size:clamp(22px,2.8vw,30px);letter-spacing:-.02em;color:var(--ink);margin:44px 0 16px}
.post-body h3{font-weight:700;font-size:20px;color:var(--ink);margin:32px 0 12px}
.callout{border-left:3px solid var(--accent);background:var(--band);padding:22px 26px;border-radius:0 12px 12px 0;margin:34px 0}
.callout p{margin:0;font-family:var(--head);font-weight:500;color:var(--ink);font-size:20px;line-height:1.5}

/* CTA */
.btn{display:inline-flex;align-items:center;gap:9px;border-radius:8px;padding:13px 24px;font-weight:600;font-size:15px;transition:all .2s;font-family:var(--body)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px var(--accent)}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.post-cta{margin-top:56px;padding:32px 34px;border:1px solid var(--line);border-radius:16px;background:var(--band);display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.post-cta h3{font-weight:800;font-size:21px;color:var(--ink)}
.post-cta p{margin:6px 0 0;font-size:15.5px;color:var(--ink-soft)}

footer{padding:34px 0;border-top:1px solid var(--line)}
.foot-bar{display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--ink-faint);font-size:13.5px;flex-wrap:wrap}
.foot-bar b{color:var(--ink-soft);font-family:var(--head);font-weight:700}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}