@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ─── Base ─────────────────────────────────────────── */
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: #111;
  background: #fff;
}

/* ─── Navigation ────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
}

/* ─── Hero ───────────────────────────────────────────── */
/* Dark — intentional. Signals precision for a technical buyer. */
.hero-section {
  background-color: #0d0d0d;
  background-image: radial-gradient(ellipse at 60% 50%, rgba(227,187,155,0.07) 0%, transparent 60%);
  padding: 100px 0 90px;
  min-height: 78vh;
  display: flex;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(227, 187, 155, 0.12);
  color: #E3BB9B;
  border: 1px solid rgba(227, 187, 155, 0.25);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: #999;
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 40px;
}

/* ─── Three truths band ─────────────────────────────── */
/* Light warm — transition from dark hero */
.truths-band {
  background: #faf8f5;
  border-top: 1px solid #ede9e4;
  border-bottom: 1px solid #ede9e4;
  padding: 48px 0;
}

.truths-divider {
  border-left: 1px solid #e0dbd4;
  border-right: 1px solid #e0dbd4;
}

.truths-text {
  font-size: 1rem;
  font-weight: 500;
  color: #444;
  line-height: 1.55;
}

/* ─── Scope note ─────────────────────────────────────── */
.scope-note {
  background: #fff;
  border-bottom: 1px solid #ede9e4;
  padding: 14px 0;
}

.scope-note p {
  margin: 0;
  font-size: 0.875rem;
  color: #888;
}

/* ─── Section backgrounds ────────────────────────────── */
.section-light {
  background: #ffffff;
  padding: 90px 0;
}

.section-warm {
  background: #faf8f5;
  padding: 90px 0;
  border-top: 1px solid #ede9e4;
  border-bottom: 1px solid #ede9e4;
}

/* ─── Section text ───────────────────────────────────── */
.section-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #C49A72;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #111;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0;
}

.section-subtitle {
  font-size: 1.05rem;
  color: #555;
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 0;
}

/* ─── Problem section ───────────────────────────────── */
.problem-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.problem-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid #ececec;
}

.problem-item:last-child {
  border-bottom: none;
}

.problem-icon {
  color: #C49A72;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.problem-title {
  display: block;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 4px;
}

.problem-desc {
  display: block;
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
}

/* ─── Feature cards ─────────────────────────────────── */
.feature-card {
  background: #fff;
  border: 1px solid #e8e4de;
  border-radius: 14px;
  padding: 28px;
  height: 100%;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.18s ease;
}

.feature-card:hover {
  box-shadow: 0 6px 28px rgba(0,0,0,0.06);
  border-color: #C49A72;
  transform: translateY(-2px);
}

.feature-icon {
  display: block;
  font-size: 1.5rem;
  color: #C49A72;
  margin-bottom: 16px;
}

.feature-card-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 10px;
}

.feature-card-body {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.65;
  margin: 0;
}

/* ─── F-MRI grid ─────────────────────────────────────── */
.fmri-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fmri-dim {
  border-radius: 10px;
  padding: 16px 20px;
  border: 1px solid #e8e4de;
  border-left-width: 4px;
}

.fmri-dim.red   { border-left-color: #c62828; background: #fff9f9; }
.fmri-dim.amber { border-left-color: #e65100; background: #fffdf5; }
.fmri-dim.green { border-left-color: #2e7d32; background: #f9fdf9; }

.fmri-dim-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.fmri-dim-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: #111;
}

.fmri-rag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.fmri-rag.red   { background: #ffcdd2; color: #b71c1c; }
.fmri-rag.amber { background: #ffe0b2; color: #bf360c; }
.fmri-rag.green { background: #c8e6c9; color: #1b5e20; }

.fmri-dim-desc {
  margin: 0;
  font-size: 0.855rem;
  color: #666;
  line-height: 1.55;
}

/* ─── Questions ──────────────────────────────────────── */
.question-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid #e8e4de;
  border-radius: 10px;
  height: 100%;
}

.question-icon {
  color: #C49A72;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.question-item p {
  margin: 0;
  font-size: 0.9rem;
  color: #444;
  line-height: 1.6;
  font-weight: 500;
}

/* ─── Process steps ─────────────────────────────────── */
.process-step {
  padding: 28px 0;
  border-top: 2px solid #E3BB9B;
}

.process-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: #E3BB9B;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.process-title {
  font-size: 1rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 8px;
}

.process-body {
  font-size: 0.9375rem;
  color: #555;
  line-height: 1.65;
  margin: 0;
}

/* ─── CTA section ────────────────────────────────────── */
/* Single dark band — reserved for CTA only */
.cta-section {
  background: #0d0d0d;
  padding: 90px 0;
}

.cta-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 1.05rem;
  color: #888;
  line-height: 1.75;
  margin-bottom: 0;
}

/* ─── Footer ─────────────────────────────────────────── */
.site-footer {
  padding: 36px 0;
  border-top: 1px solid #e8e8e8;
  background: #fff;
}

.footer-link {
  font-size: 0.875rem;
  color: #888;
  text-decoration: none;
}

.footer-link:hover {
  color: #111;
}

.footer-copy {
  font-size: 0.875rem;
  color: #aaa;
}

/* ─── Buttons ─────────────────────────────────────────── */
.btn-primary {
  background-color: #111;
  border-color: #111;
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover {
  background-color: #2a2a2a;
  border-color: #2a2a2a;
  color: #fff;
}

.btn-light {
  background: #fff;
  color: #111;
  font-weight: 600;
  border-color: #fff;
}

.btn-light:hover {
  background: #f0ebe4;
  border-color: #f0ebe4;
  color: #111;
}

/* ─── Hero chip graphic ──────────────────────────────── */
.chip-graphic {
  opacity: 0.75;
  width: 100%;
  max-width: 340px;
}

/* ─── Research section ───────────────────────────────── */
.research-section {
  background: #0d0d0d;
  padding: 90px 0;
  border-top: 1px solid #1f1f1f;
}

.section-label-light {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #E3BB9B;
  margin-bottom: 10px;
}

.section-title-light {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0;
}

.section-subtitle-light {
  font-size: 1.05rem;
  color: #777;
  line-height: 1.75;
  max-width: 600px;
}

.research-stat {
  border-top: 2px solid rgba(227,187,155,0.35);
  padding-top: 20px;
}

.research-stat-num {
  display: block;
  font-size: 2.25rem;
  font-weight: 800;
  color: #E3BB9B;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.research-stat-label {
  display: block;
  font-size: 0.875rem;
  color: #888;
  line-height: 1.65;
}

.research-quote {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(227,187,155,0.18);
  border-left: 3px solid #E3BB9B;
  border-radius: 10px;
  padding: 24px 26px;
  height: 100%;
}

.research-quote-text {
  font-size: 0.9375rem;
  color: #ccc;
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 14px;
}

.research-quote-source {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: #E3BB9B;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.research-quote-finding {
  display: block;
  font-size: 0.855rem;
  color: #777;
  line-height: 1.65;
}

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-section {
    padding: 70px 0 60px;
    min-height: auto;
  }

  .truths-divider {
    border-left: none;
    border-right: none;
    border-top: 1px solid #e0dbd4;
    border-bottom: 1px solid #e0dbd4;
    padding: 20px 0;
  }

  .section-light,
  .section-warm {
    padding: 60px 0;
  }

  .cta-section {
    padding: 60px 0;
  }
}