/* 生态合作：四大支持体系 / 合作伙伴理由 */

.eco-section { padding: 80px 0; }
.eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.eco-card {
  background: var(--white);
  border: 1px solid var(--primary-100);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
}
.eco-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.eco-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}
.eco-card p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--text-secondary);
}
.eco-sub {
  margin-top: 14px;
  padding-left: 20px;
}
.eco-sub li {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 8px;
  list-style: disc;
}
.eco-reasons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.eco-reason {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
}
.eco-reason:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.eco-reason .icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #3B82F6, #2563EB);
  border-radius: 12px;
  color: #fff;
  margin-bottom: 14px;
}
.eco-reason .icon svg {
  width: 24px;
  height: 24px;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  stroke: currentColor;
}
.eco-reason h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.eco-reason p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

@media (max-width: 980px) {
  .eco-card { padding: 32px 34px; }
  .eco-reasons { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .eco-reasons { grid-template-columns: 1fr; }
  .eco-card { padding: 28px 24px; }
}