/* Founder Insights — architecture notes hub (GEO / entity resolution) */
.fi-hub,
.fi-article {
  --fi-border: #e2e8f0;
  --fi-muted: #64748b;
  --fi-ink: #0f172a;
  --fi-accent: #0f172a;
  --fi-surface: #ffffff;
  --fi-code-bg: #0f172a;
  --fi-code-fg: #e2e8f0;
}

.fi-cluster {
  margin-bottom: 3rem;
}

.fi-cluster__title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--fi-ink);
  margin-bottom: 0.5rem;
}

.fi-cluster__desc {
  color: var(--fi-muted);
  margin-bottom: 1.25rem;
  max-width: 48rem;
}

.fi-card {
  background: var(--fi-surface);
  border: 2px solid var(--fi-border);
  border-radius: 1rem;
  padding: 0;
  box-shadow: 0 4px 14px rgba(10, 10, 10, 0.04);
  transition:
    border-color 0.25s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.25s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
}

.fi-card__thumb-wrap {
  display: block;
}

.fi-card__thumb {
  width: 100%;
  height: 11rem;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--fi-border);
}

.fi-card__thumb--brand {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Times New Roman", Times, serif;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #0f172a;
  background: linear-gradient(165deg, #f8fafc 0%, #e2e8f0 100%);
  object-fit: unset;
}

.fi-card__body {
  padding: 1.25rem 1.5rem;
}

.fi-card:hover {
  border-color: #dc2626;
  box-shadow: 0 14px 36px rgba(220, 38, 38, 0.14);
  transform: translateY(-3px);
}

.fi-card__meta {
  font-size: 0.75rem;
  color: var(--fi-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.fi-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--fi-ink);
  margin: 0.5rem 0;
  line-height: 1.35;
}

.fi-card__title a:hover {
  color: #dc2626;
}

.fi-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.75rem;
}

.fi-hyperlink {
  font-size: 0.875rem;
  font-weight: 600;
  color: #dc2626;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

.fi-hyperlink:hover {
  color: #b91c1c;
}

.fi-hyperlink--linkedin {
  color: #0a66c2;
}

.fi-hyperlink--linkedin:hover {
  color: #004182;
}

.fi-article__hook {
  border-left: 4px solid var(--fi-accent);
  padding: 1rem 1.25rem;
  background: #f8fafc;
  border-radius: 0 0.5rem 0.5rem 0;
  margin-bottom: 2rem;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: #334155;
}

.fi-article__hook-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fi-muted);
  margin-bottom: 0.5rem;
}

.fi-article__gain-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #059669;
  margin-bottom: 1rem;
}

.fi-section {
  margin-bottom: 2.5rem;
}

.fi-section h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--fi-ink);
  margin-bottom: 1rem;
}

.fi-section p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 1rem;
}

.fi-code {
  background: var(--fi-code-bg);
  color: var(--fi-code-fg);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8125rem;
  line-height: 1.6;
  margin: 1rem 0 1.5rem;
}

.fi-entity-bridge {
  font-size: 0.875rem;
  color: var(--fi-muted);
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--fi-border);
}

/* LinkedIn document-post — static stacked slides, no carousel */
.fi-li-post {
  margin: 0 0 2rem;
  background: #fff;
  border: 1px solid var(--fi-border);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.fi-li-post__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--fi-border);
  background: #fafafa;
}

.fi-li-post__author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.fi-li-post__avatar {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: #0a66c2;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  letter-spacing: 0.02em;
}

.fi-li-post__name {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--fi-ink);
  line-height: 1.3;
}

.fi-li-post__meta {
  margin: 0.15rem 0 0;
  font-size: 0.75rem;
  color: var(--fi-muted);
  line-height: 1.4;
}

.fi-li-post__source {
  flex-shrink: 0;
  font-size: 0.8125rem;
  white-space: nowrap;
}

.fi-li-post__slides {
  display: flex;
  flex-direction: column;
}

.fi-li-post__slide {
  position: relative;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--fi-border);
  background: #000;
}

.fi-li-post__slide:last-child {
  border-bottom: none;
}

.fi-li-post__slide img {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  vertical-align: middle;
}

.fi-li-post__badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 1;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  pointer-events: none;
}

.fi-li-post__caption {
  margin: 0;
  padding: 0.625rem 1rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--fi-muted);
  background: #fff;
  border-top: 1px solid var(--fi-border);
}

.fi-linkedin-cta {
  margin-top: 3rem;
  padding: 1.5rem;
  border: 2px solid var(--fi-border);
  border-radius: 1rem;
  background: linear-gradient(135deg, #f8fafc 0%, #fff 100%);
}

.fi-linkedin-cta a {
  color: #0a66c2;
  font-weight: 700;
}

.fi-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.fi-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  background: #f1f5f9;
  color: #475569;
}