:root {
  --b2b-dark: #111827;
  --b2b-muted: #6b7280;
  --b2b-line: #e5e7eb;
  --b2b-soft: #f8fafc;
  --b2b-accent: #0d6efd;
  --b2b-radius-xl: 1.25rem;
  --b2b-radius-xxl: 1.75rem;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #f8fafc;
  color: var(--b2b-dark);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

.brand-box {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  background: var(--b2b-dark);
  color: #fff;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0.5rem 1rem rgba(17, 24, 39, 0.12);
}

.section-title {
  font-size: clamp(1.9rem, 2.8vw, 3rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.section-subtitle {
  color: var(--b2b-muted);
  line-height: 1.8;
}

.section-kicker {
  color: #6b7280;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700;
}

.section-block {
  padding: 5rem 0;
}

.tracking-wide {
  letter-spacing: 0.14em;
}

.info-box {
  border: 1px dashed #cbd5e1;
  border-radius: 1rem;
  background: #fff;
  padding: 0.95rem 1rem;
}

.note-card {
  background: #f8fafc;
  box-shadow: 0 0.5rem 1.25rem rgba(15, 23, 42, 0.04);
  border: 1px solid var(--b2b-line);
  border-radius: var(--b2b-radius-xxl);
}

.hero-card,
.info-card,
.product-card,
.login-card,
.logic-card {
  border: 1px solid var(--b2b-line);
  border-radius: var(--b2b-radius-xxl);
  background: #fff;
  box-shadow: 0 1rem 2.5rem rgba(15, 23, 42, 0.06);
}

@media (max-width: 991.98px) {
  .section-block {
    padding: 4rem 0;
  }
}