.sustainability-container {
  max-width: 850px;
  margin: 120px auto;
  padding: 40px 25px;
  text-align: center;
  color: var(--text);
  background: var(--card-bg);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.sustainability-container:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}
.sustainability-container h1 {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 700;
  font-size: 2.3rem;
  color: var(--accent);
  margin-bottom: 20px;
}
.sustainability-container p {
  line-height: 1.8;
  font-size: 1.05rem;
  opacity: 0.95;
  margin-bottom: 30px;
}
.sdg-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.sdg-links a {
  display: inline-block;
  border-radius: 14px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  transition: transform .3s ease, box-shadow .3s ease, filter .3s ease;
}
.sdg-links a:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  filter: brightness(1.05);
}
.sdg-links img {
  width: 160px;
  height: 160px;
  display: block;
  border-radius: 14px;
  background: #fff;
}
.declaration {
  margin-top: 45px;
  font-style: italic;
  color: var(--text-light);
  opacity: 0.85;
}

/* Responsive */
@media (max-width: 768px) {
  .sustainability-container { margin: 90px auto; padding: 30px 20px; }
  .sustainability-container h1 { font-size: 1.9rem; }
  .sdg-links img { width: 130px; height: 130px; }
}
@media (max-width: 480px) {
  .sustainability-container { margin: 70px auto; padding: 25px 15px; }
  .sustainability-container h1 { font-size: 1.6rem; }
  .sdg-links img { width: 110px; height: 110px; }
}