/* Pillars (home) — 4 cards des sections principales. */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-m);
}
.pillar {
  background: var(--card-bg);
  border: var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: var(--radius-l);
  padding: var(--pad-card);
  position: relative;
  display: grid;
  grid-template-columns: 32px 1fr;
  column-gap: 0.75rem;
  align-content: start;
  row-gap: 0;
  min-height: 100%;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  text-decoration: none;
  color: var(--ink);
}
.pillar:hover {
  transform: translateY(-4px);
  border-color: var(--duck);
}
.pillar__num {
  grid-column: 1 / -1;
  margin-bottom: 1.4rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.05rem;
  color: var(--duck);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.pillar__num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--hairline);
}
.pillar__icon {
  width: 32px;
  height: 32px;
  color: var(--marine);
  margin: 0;
  grid-column: 1;
  align-self: center;
  display: block;
}
.pillar h3 {
  grid-column: 2;
  margin: 0;
  align-self: center;
  font-size: 1.4rem;
}
.pillar p {
  grid-column: 1 / -1;
  margin: 1.3rem 0 0;
  color: var(--ink-2);
  font-size: 0.97rem;
  flex: 1;
}
.pillar__link {
  grid-column: 1 / -1;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--marine);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
}
.pillar__link::after {
  content: "→";
  transition: transform 0.25s ease;
}
.pillar:hover .pillar__link::after { transform: translateX(4px); }

@media (max-width: 920px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .pillars { grid-template-columns: 1fr; }
}