body {
  margin: 0;
  line-height: 1.6;
  background: #f4f9f6;
  color: #173327;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar .logo {
  font-size: 1.7rem;
  font-weight: 700;
}

.navbar nav a {
  margin-left: 1rem;
  text-decoration: none;
  font-weight: 600;
}

.full-screen {
  text-align: center;
  padding: 7rem 2rem 4rem;
}

.hero-img {
  width: min(92vw, 900px);
  border-radius: 1rem;
  margin-top: 2rem;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.16);
}

.parallax-banner {
  background-image: url('https://images.unsplash.com/photo-1592194996308-7b43878e84a6');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  min-height: 50vh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.parallax-content {
  text-align: center;
  color: #f1fff6;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 1rem;
  padding: 2rem;
  max-width: 760px;
}

.parallax-content h2 {
  color: #d9ffeb;
}

.impact-metrics,
.timeline,
.case-studies,
.gallery,
.charts,
.call-to-action {
  padding: 4.5rem 2rem;
}

.impact-grid {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.impact-card {
  background: #eef8f1;
  border-radius: 1rem;
  text-align: center;
  padding: 1.8rem 1.2rem;
}

.impact-card img {
  width: 58px;
  margin-bottom: 0.8rem;
}

.timeline-list {
  margin: 1.8rem auto 0;
  max-width: 700px;
  padding: 0;
  list-style: none;
}

.timeline-list li {
  padding: 1rem 0;
  border-bottom: 1px solid rgba(23, 51, 39, 0.16);
}

.timeline-img {
  width: min(90vw, 760px);
  display: block;
  margin: 2rem auto 0;
  border-radius: 0.8rem;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.12);
}

.case-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.4rem;
}

.case {
  border-radius: 1rem;
  padding: 1.5rem;
  background: #ffffff;
}

.case img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 0.7rem;
  margin-bottom: 0.9rem;
}

.gallery-grid {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
}

.gallery-grid img {
  width: 100%;
  border-radius: 0.7rem;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.gallery-grid img:hover {
  transform: scale(1.03);
}

.call-to-action {
  background: linear-gradient(120deg, #1f5e44, #2d7f58);
  color: #f1fff8;
  text-align: center;
  border-top: 8px solid #1a4e39;
}

.btn {
  display: inline-block;
  margin-top: 1.2rem;
  padding: 0.75rem 1.8rem;
  border-radius: 999px;
  text-decoration: none;
  background: #9de3bf;
  color: #123624;
  font-weight: 700;
}

footer {
  text-align: center;
  padding: 2rem;
  background: #193f2f;
  color: #e0f6ea;
}

.fade-in,
.fade-in-up,
.fade-in-scale,
.slide-in-left,
.slide-in-right,
.bounce-in {
  opacity: 0;
}

.fade-in {
  transition: opacity 0.8s ease;
}

.fade-in-up {
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-scale {
  transform: scale(0.95);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-left {
  transform: translateX(-30px);
  transition: opacity 0.85s ease, transform 0.85s ease;
}

.slide-in-right {
  transform: translateX(30px);
  transition: opacity 0.85s ease, transform 0.85s ease;
}

.bounce-in {
  transform: scale(0.75);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.2, 1, 0.22, 1);
}

.in-view {
  opacity: 1 !important;
  transform: none !important;
}

@media (max-width: 768px) {
  .full-screen {
    padding-top: 6.4rem;
  }

  .parallax-banner {
    min-height: 42vh;
    background-attachment: scroll;
  }
}