:root{
  --void:#020306; --panel:#0d121e; --panel-hi:#131b2b;
  --border:rgba(154,168,196,.14); --border-hi:rgba(111,195,255,.4);
  --chrome-hi:#f6f9fd; --chrome-mid:#9aa7bc; --chrome-dim:#7683a0;
  --signal:#2f8ef4; --signal-bright:#6fc3ff; --signal-violet:#8b7bff; --good:#3ddc97;
  --acc-orange:#ff8a5c; --acc-amber:#ffb454; --acc-rose:#ff6b9d; --acc-cyan:#4dd0e1;
  --font-display:'Bricolage Grotesque',sans-serif;
  --font-body:'Plus Jakarta Sans',-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--void);color:var(--chrome-mid);font-family:var(--font-body);font-size:15.5px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--font-display);color:var(--chrome-hi);letter-spacing:-.02em;text-wrap:balance}
a{color:var(--signal-bright);text-decoration:none}
a:hover{text-decoration:underline}
.mono{font-family:var(--font-mono)}
img{max-width:100%;display:block}

.nav{display:flex;align-items:center;gap:11px;padding:20px 48px;border-bottom:1px solid var(--border)}
.nav img{width:30px;height:30px}
.nav span{font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--chrome-hi)}
.nav .back{margin-left:auto;font-size:13.5px;font-weight:600;color:var(--chrome-mid)}
.nav .back:hover{color:var(--chrome-hi);text-decoration:none}

.wrap{max-width:760px;margin:0 auto;padding:64px 24px 100px}
.wide{max-width:980px}

/* Listing page */
.blog-hero{margin-bottom:52px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.09em;text-transform:uppercase;color:var(--signal-bright);border:1px solid var(--border-hi);border-radius:100px;padding:6px 14px;margin-bottom:20px}
.blog-hero h1{font-size:38px;margin-bottom:12px}
.blog-hero p{font-size:16px;color:var(--chrome-mid);max-width:560px}

.post-grid{display:grid;gap:18px}
.post-card{display:block;background:linear-gradient(160deg,var(--panel-hi),var(--panel));border:1px solid var(--border);border-radius:16px;padding:26px 28px;transition:border-color .2s,transform .2s}
.post-card:hover{border-color:var(--border-hi);transform:translateY(-2px);text-decoration:none}
.post-card .meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--chrome-dim);margin-bottom:10px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.post-card .tag{color:var(--signal-bright)}
.post-card h2{font-size:21px;margin-bottom:8px;color:var(--chrome-hi)}
.post-card p{font-size:14px;color:var(--chrome-mid);margin-bottom:0}
.post-card .read{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;color:var(--signal-bright)}

/* Article page */
.article-meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--signal-bright);margin-bottom:16px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.article-meta .dot{color:var(--chrome-dim)}
article h1{font-size:36px;margin-bottom:18px;line-height:1.15}
.lede{font-size:17px;color:var(--chrome-hi);margin-bottom:36px;line-height:1.6}
article h2{font-size:23px;margin:40px 0 14px}
article h3{font-size:17px;color:var(--chrome-hi);margin:26px 0 10px}
article p{font-size:15px;color:var(--chrome-mid);margin-bottom:16px}
article ul,article ol{margin:0 0 18px 22px}
article li{margin-bottom:9px;font-size:15px;color:var(--chrome-mid)}
article strong{color:var(--chrome-hi)}
article code{font-family:var(--font-mono);font-size:.9em;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:4px;color:var(--acc-cyan)}
.card{background:linear-gradient(160deg,var(--panel-hi),var(--panel));border:1px solid var(--border);border-radius:14px;padding:20px 22px;margin:26px 0}
.card p{margin:0;color:var(--chrome-hi);font-size:14px}
.card.warn{border-color:rgba(255,107,157,.3)}
table{width:100%;border-collapse:collapse;margin:20px 0 26px;font-size:13.5px}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border)}
th{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--chrome-dim)}
td{color:var(--chrome-mid)}
td strong,th strong{color:var(--chrome-hi)}
.cta-box{background:linear-gradient(160deg,var(--panel-hi),var(--panel));border:1px solid var(--border-hi);border-radius:16px;padding:30px 32px;margin:48px 0 8px;text-align:center}
.cta-box h3{font-size:19px;margin-bottom:8px}
.cta-box p{margin-bottom:18px;font-size:14px}
.cta-box .btn{display:inline-block;font-weight:700;font-size:13.5px;color:#020617;background:linear-gradient(135deg,var(--signal-bright),var(--signal));padding:11px 26px;border-radius:100px}
.cta-box .btn:hover{text-decoration:none;transform:translateY(-1px)}
.back-link{display:inline-block;margin-top:36px;font-size:13.5px;color:var(--chrome-mid)}

/* ── Diagrams ── */
.diagram{background:linear-gradient(160deg,var(--panel-hi),var(--panel));border:1px solid var(--border);border-radius:16px;padding:28px 26px 24px;margin:32px 0 40px}
.diagram .dcaption{font-family:var(--font-mono);font-size:11px;color:var(--chrome-dim);text-align:center;margin-top:18px;letter-spacing:.02em}

.chain{display:flex;align-items:stretch;gap:0}
.chain-node{flex:1;min-width:0;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:12px;padding:16px 16px}
.chain-node .sev{font-family:var(--font-mono);font-size:9.5px;text-transform:uppercase;letter-spacing:.06em;font-weight:700;margin-bottom:8px;display:block}
.chain-node .sev.crit{color:var(--acc-rose)}
.chain-node .sev.high{color:var(--acc-orange)}
.chain-node .sev.med{color:var(--acc-amber)}
.chain-node .sev.good{color:var(--good)}
.chain-node .label{font-size:13px;color:var(--chrome-hi);font-weight:600;line-height:1.4}
.chain-node.result{border-color:rgba(255,107,157,.4);background:linear-gradient(160deg,rgba(255,107,157,.12),rgba(255,255,255,.02))}
.chain-node.blocked{border-color:rgba(61,220,151,.4);background:linear-gradient(160deg,rgba(61,220,151,.12),rgba(255,255,255,.02))}
.chain-arrow{display:flex;align-items:center;justify-content:center;min-width:30px;color:var(--chrome-dim);font-size:18px;flex-shrink:0}
@media (max-width:680px){
  .chain{flex-direction:column;gap:6px}
  .chain-arrow{min-height:22px;transform:rotate(90deg)}
}

.timeline-row{display:flex;align-items:flex-start;gap:16px;margin-bottom:38px}
.timeline-row:last-child{margin-bottom:6px}
.trow-label{width:120px;flex-shrink:0;font-family:var(--font-mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--chrome-dim);padding-top:2px}
.timeline-track{flex:1;position:relative;height:2px;background:var(--border);margin-top:9px}
.timeline-point{position:absolute;top:50%;width:14px;height:14px;border-radius:50%;transform:translate(-50%,-50%);border:3px solid var(--panel)}
.timeline-point.good{background:var(--good)}
.timeline-point.bad{background:var(--acc-rose)}
.timeline-point .tp-label{position:absolute;top:16px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:11px;color:var(--chrome-mid);text-align:center}
@media (max-width:680px){ .trow-label{width:74px;font-size:9px} .timeline-point .tp-label{font-size:9.5px} }

.fw-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.fw-col{background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:12px;padding:16px}
.fw-col .fw-name{font-family:var(--font-mono);font-size:10px;text-transform:uppercase;color:var(--signal-bright);margin-bottom:10px;letter-spacing:.04em}
.fw-col .fw-cite{font-size:12.5px;color:var(--chrome-hi);font-weight:700;margin-bottom:6px}
.fw-col .fw-text{font-size:11.5px;color:var(--chrome-mid);line-height:1.5}
.fw-converge{text-align:center;margin-top:18px;font-size:12.5px;color:var(--chrome-dim)}
.fw-converge strong{color:var(--good)}
@media (max-width:680px){ .fw-columns{grid-template-columns:1fr} }

.group-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.group-card{background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:12px;padding:16px 18px}
.group-card .glabel{font-family:var(--font-mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--signal-bright);margin-bottom:10px}
.group-card ul{margin:0;padding:0;list-style:none}
.group-card li{font-size:12.5px;color:var(--chrome-mid);padding:6px 0;border-top:1px solid var(--border)}
.group-card li:first-child{border-top:none;padding-top:0}

footer{border-top:1px solid var(--border);padding:32px 48px;text-align:center}
footer a{margin:0 10px;font-size:13px;color:var(--chrome-mid)}
footer .copy{font-family:var(--font-mono);font-size:11.5px;color:var(--chrome-dim);margin-top:14px}

@media (max-width:600px){
  .nav,footer{padding:18px 22px}
  .wrap{padding:44px 20px 70px}
  .blog-hero h1{font-size:30px}
  article h1{font-size:28px}
}