.principles-section {
  background: var(--paper);
}

.section-heading {
  max-width: 720px;
}

.section-heading h2 {
  margin: 12px 0 16px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.3;
  letter-spacing: -0.026em;
}

.section-heading > p {
  margin: 0;
  color: var(--ink-600);
  font-size: 16px;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 45px;
}

.principle-grid article {
  min-height: 230px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  transition: border-color 220ms ease, box-shadow 220ms ease,
    transform 220ms ease;
}

.principle-grid article:hover {
  border-color: #dbe2ea;
  box-shadow: var(--shadow-card);
  transform: translateY(-5px);
}

.principle-number {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 11px;
  color: var(--blue-deep);
  background: var(--blue-wash);
  font-size: 11px;
  font-weight: 800;
}

.principle-grid h3 {
  margin: 24px 0 11px;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.principle-grid p {
  margin: 0;
  color: var(--ink-600);
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--ink);
  background: var(--cloud);
}

.footer-shell {
  padding: 56px 0 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand strong {
  color: var(--ink);
  font-size: 16px;
}

.footer-brand p {
  margin: 1px 0 0;
  color: var(--ink-faint);
  font-size: 11px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 30px 0;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}

.business-info {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 18px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 11px;
}

.footer-notice {
  max-width: 850px;
  margin: 17px 0 0;
  color: var(--ink-faint);
  font-size: 11px;
}

.copyright {
  margin: 22px 0 0;
  color: #9aa4b1;
  font-size: 10px;
}