/* ── Hero ── */
.fm-dim {
color: var(--bg-red);
}
.fm-hero {
  background: var(--color-white);
  border-bottom: 1px solid var(--border);
  padding: 120px var(--container-pad) 72px;
}

.fm-hero__inner {
  max-width: var(--container-max);
  margin-inline: auto;
}

.fm-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-accent);
  margin-bottom: var(--space-md);
}

.fm-hero__title {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 8.5rem);
  color: var(--text-bluegrey);
  line-height: 0.95;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-lg);
}

.fm-hero__lead {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* ── Zero-based callout banner ── */
.fm-zba-banner {
  background: var(--bg-red);
  padding: var(--space-2xl) var(--container-pad);
}

.fm-zba-banner__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.fm-zba-banner__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #ffff;
  margin-bottom: var(--space-md);
}

.fm-zba-banner__heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: #ffffff;
  line-height: 1;
  margin-bottom: var(--space-lg);
}

.fm-zba-banner__body {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: #fff;
  line-height: 1.85;
}

.fm-zba-banner__metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.fm-zba-metric {
  border-left: 2px solid rgba(255,255,255,0.15);
  padding-left: var(--space-lg);
}

.fm-zba-metric__val {
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 4px;
}

.fm-zba-metric__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: rgba(255,255,255,1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

/* ── Main layout ── */
.fm-layout {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-3xl) var(--container-pad);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

/* ── Sticky TOC ── */
.fm-toc {
  position: sticky;
  top: 96px;
}

.fm-toc__heading {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.fm-toc__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.fm-toc__link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: color var(--duration-fast), border-color var(--duration-fast), background var(--duration-fast);
  line-height: 1.4;
  display: block;
}

.fm-toc__link:hover,
.fm-toc__link.active {
  color: var(--text-primary);
  border-left-color: var(--accent);
  background: rgba(55,62,72,0.05);
}

/* ── Content ── */
.fm-content {
  max-width: 760px;
}

/* ── Sections ── */
.fm-section {
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--border-subtle);
}

.fm-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.fm-section__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.fm-section__title {
  font-family: var(--font-saira);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  color: var(--bg-red);
  margin-bottom: var(--space-lg);
  line-height: 1.15;
}

.fm-section__subtitle {
  font-family: var(--font-saira);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  margin: var(--space-xl) 0 var(--space-sm);
}

.fm-section__body {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: var(--space-md);
}

.fm-section__body:last-child { margin-bottom: 0; }

.fm-section__body a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--duration-fast);
}
.fm-section__body a:hover { opacity: 0.65; }

/* ── Callout ── */
.fm-callout {
  background: var(--color-white);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
}

.fm-callout p {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ── Bullet list ── */
.fm-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

.fm-list li {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  padding-left: var(--space-lg);
  position: relative;
}

.fm-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--text-accent);
  font-family: var(--font-mono);
}

/* ── Principle cards grid ── */
.fm-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.fm-card {
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: box-shadow var(--duration-base), border-color var(--duration-base);
}

.fm-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
  border-color: var(--accent);
}

.fm-card__num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--border);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.fm-card__title {
  font-family: var(--font-saira);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.fm-card__body {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Stat row ── */
.fm-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-xl) 0;
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.fm-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fm-stat__val {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--text-primary);
  line-height: 1;
}

.fm-stat__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

/* ── CTA strip ── */
.fm-cta-strip {
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
  flex-wrap: wrap;
}

.fm-cta-strip__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fm-cta-strip__heading {
  font-family: var(--font-saira);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.fm-cta-strip__sub {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── Back to top ── */
.fm-back-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px;
  height: 42px;
  background: var(--bg-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base);
  z-index: 50;
  cursor: pointer;
  border: none;
}

.fm-back-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.site-footer {
  background: var(--color-white);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .fm-layout {
    grid-template-columns: 1fr;
  }
  .fm-toc {
    position: static;
    background: var(--color-ghost);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
  }
  .fm-zba-banner__inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  .fm-cards {
    grid-template-columns: 1fr;
  }
  .fm-hero__lead{
    font-size: 0.80rem;
  }
  .fm-zba-banner__body {
     font-size: 0.80rem;
  }
  .fm-zba-metric__label {
    font-size: 0.50rem;
    color: var(--color-ghost);
  }
  .fm-section__body{
     font-size: 0.80rem;
  }
}

@media (max-width: 600px) {
  .fm-hero { padding-top: 100px; }
  .fm-stats-row { grid-template-columns: 1fr 1fr; }
  .fm-cta-strip { flex-direction: column; align-items: flex-start; }
  .fm-zba-banner__metrics { grid-template-columns: 1fr 1fr; }
}