.upgrade-section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 9rem) clamp(1.25rem, 4vw, 3rem);
}

.upgrade-section > h2 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(3rem, 5.8vw, 6.4rem);
  font-weight: 620;
  line-height: .95;
  letter-spacing: -.065em;
}

.upgrade-section > p {
  max-width: 720px;
  margin: 1.5rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  line-height: 1.75;
}

.upgrade-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.upgrade-grid article {
  padding: clamp(1.4rem, 2.5vw, 2.3rem);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: linear-gradient(145deg, #fff, #f1f8ff);
  box-shadow: 0 18px 50px #0d3a700f;
}

.upgrade-grid h3 { margin: 0; font-size: 1.25rem; letter-spacing: -.025em; }
.upgrade-grid p { margin: 1rem 0 0; color: var(--ink-soft); line-height: 1.65; }
.upgrade-section .upgrade-access { max-width: none; padding: 1.15rem 1.3rem; border-left: 3px solid var(--blue); background: var(--blue-pale); font-weight: 650; }

@media (max-width: 720px) {
  .upgrade-grid { grid-template-columns: 1fr; }
  .upgrade-section > h2 { font-size: clamp(2.8rem, 13vw, 4.5rem); }
}