:root {
  --bg: #F7F8FA;
  --bg-elev: #FFFFFF;
  --fg: #0B0C0E;
  --muted: #4B5563;
  --gray: #6B7280;
  --cobalt: #2F5BFF;
  --border: #E5E7EB;
  --card: #FFFFFF;
  --max: 1080px;
  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--cobalt); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(var(--max), calc(100% - 2.5rem)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(247, 248, 250, 0.92);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 0; gap: 1rem;
}
.nav-brand img { height: 60px; width: auto; }
.nav-links { display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; align-items: center; }
.nav-links a { color: var(--muted); font-size: 0.92rem; font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--fg); text-decoration: none; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.7rem 1.1rem; border-radius: 8px; font-weight: 650; font-size: 0.95rem;
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--cobalt); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--border); }
.btn-ghost:hover { border-color: #CBD5E1; background: #fff; }
.hero { padding: 4.5rem 0 3.25rem; }
.eyebrow {
  font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--gray); font-weight: 700; margin: 0 0 1rem;
}
h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 1.1;
  letter-spacing: -0.03em; margin: 0 0 1rem; max-width: 18ch;
}
.lede { font-size: 1.1rem; color: var(--muted); max-width: 42rem; margin: 0 0 1.75rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.proof {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem;
  margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
  color: var(--gray); font-size: 0.85rem; letter-spacing: 0.04em; text-transform: uppercase;
}
section { padding: 3rem 0; }
.section-title { font-size: 1.55rem; letter-spacing: -0.02em; margin: 0 0 0.75rem; }
.section-lead { color: var(--muted); max-width: 40rem; margin: 0 0 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1rem; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 1.15rem 1.2rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.card h3 { margin: 0 0 0.45rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card.accent { border-color: rgba(47,91,255,0.35); }
.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}
.role {
  background: var(--bg-elev); border-radius: 12px; padding: 1.25rem;
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.role .label {
  color: var(--cobalt); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; font-weight: 700; margin-bottom: 0.45rem;
}
.role h3 { margin: 0 0 0.5rem; }
.role p { margin: 0; color: var(--muted); }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li {
  position: relative; padding: 0.9rem 0 0.9rem 3rem;
  border-bottom: 1px solid var(--border); color: var(--muted);
}
.steps li:last-child { border-bottom: none; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0.85rem;
  width: 1.8rem; height: 1.8rem; border-radius: 999px;
  background: rgba(47,91,255,0.12); color: var(--cobalt);
  display: grid; place-items: center; font-size: 0.8rem; font-weight: 700;
}
.steps strong { color: var(--fg); }
.panel {
  background: linear-gradient(180deg, rgba(47,91,255,0.08), transparent 55%), var(--card);
  border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem;
}
.panel img.synapse { height: 108px; width: auto; margin: 1rem 0; }
.site-footer {
  margin-top: 2rem; border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem; color: var(--muted); font-size: 0.88rem;
  background: var(--bg-elev);
}
.footer-row {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; align-items: flex-start;
}
.footer-brand img { height: 44px; margin-bottom: 0.65rem; }
.legal { color: var(--gray); font-size: 0.8rem; margin-top: 1.25rem; }
.page-hero { padding: 3rem 0 1.5rem; }
.page-hero h1 { max-width: 22ch; font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
.contact-box {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 1.5rem; max-width: 36rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.contact-box p { color: var(--muted); }
.synapse-hero-logo { height: 108px; width: auto; margin: 1rem 0 1.5rem; }

/* Blog / long-form */
.post-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.post {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 1.25rem 1.35rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.post-placeholder { opacity: 0.92; }
.post-meta {
  color: var(--gray); font-size: 0.85rem; margin: 0 0 0.65rem;
  letter-spacing: 0.02em;
}
.post-meta .post-id {
  color: var(--cobalt); font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; font-size: 0.72rem;
}
article.post {
  background: transparent; border: none; box-shadow: none; padding-left: 0; padding-right: 0;
  max-width: 42rem;
}
article.post h1 { max-width: 22ch; }
.prose {
  color: var(--fg); font-size: 1.05rem; line-height: 1.7; max-width: 42rem;
}
.prose p { margin: 0 0 1.15rem; color: var(--muted); }
.prose h2 {
  font-size: 1.35rem; letter-spacing: -0.02em; margin: 2rem 0 0.75rem; color: var(--fg);
}
.prose h3 {
  font-size: 1.1rem; margin: 1.5rem 0 0.5rem; color: var(--fg);
}
.prose a { color: var(--cobalt); font-weight: 500; }
.prose ul, .prose ol { color: var(--muted); margin: 0 0 1.15rem; padding-left: 1.25rem; }
.prose li { margin: 0.35rem 0; }
.prose blockquote {
  margin: 0 0 1.15rem; padding: 0.75rem 1rem;
  border-left: 3px solid var(--cobalt);
  background: rgba(47,91,255,0.06); border-radius: 0 8px 8px 0;
  color: var(--muted);
}
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em; background: #EEF2FF; color: var(--cobalt);
  padding: 0.1em 0.35em; border-radius: 4px;
}
.prose pre {
  background: #0B0C0E; color: #E5E7EB; padding: 1rem 1.1rem; border-radius: 10px;
  overflow-x: auto; margin: 0 0 1.15rem;
}
.prose pre code { background: transparent; color: inherit; padding: 0; }
@media (max-width: 860px) {
  .grid-4, .grid-2, .split { grid-template-columns: 1fr; }
  .nav-brand img { height: 48px; }
  .synapse-hero-logo, .panel img.synapse { height: 84px; }
  h1 { max-width: none; }
}

/* Blog reading paths & next-read */
.reading-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 0 0 2.5rem;
}
.path-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem 1.25rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  border-top: 3px solid var(--cobalt);
}
.path-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.path-card .path-promise {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.path-card ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.path-card ol li { margin: 0.3rem 0; }
.path-card ol a { font-weight: 500; }
.path-card .path-start {
  display: inline-block;
  margin-top: 0.85rem;
  font-size: 0.85rem;
  font-weight: 650;
  color: var(--cobalt);
}

.theme-group { margin: 0 0 2.25rem; }
.theme-group > h2.section-title {
  font-size: 1.25rem;
  margin: 0 0 0.35rem;
}
.theme-group .section-lead {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.theme-group .post-list { gap: 0.75rem; }
.theme-group .post { padding: 1rem 1.15rem; }
.sector-badge {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  background: rgba(47, 91, 255, 0.1);
  color: var(--cobalt);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  vertical-align: middle;
}
.theme-note {
  margin: 0.65rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}
.recent-strip { margin-top: 0.5rem; }
.recent-strip .section-title { font-size: 1.15rem; }

.next-read {
  margin: 2.5rem 0 0;
  padding: 1.35rem 1.4rem;
  background: linear-gradient(180deg, rgba(47, 91, 255, 0.06), transparent 70%), var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  border-left: 3px solid var(--cobalt);
  max-width: 42rem;
}
.next-read h2 {
  margin: 0 0 0.85rem;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.next-read ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.next-read li {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}
.next-read li strong {
  color: var(--fg);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.2rem;
}
.next-read a { font-weight: 600; }
.next-read .next-primary {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

@media (max-width: 860px) {
  .reading-paths { grid-template-columns: 1fr; }
}