body {
  font-family: 'Poppins', sans-serif;
  background-color: #f9fafb;
  color: #2c3e50;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

h1, h2, .navbar-brand {
  font-weight: 700;
  color: #2c3e50;
}

p, li {
  font-weight: 400;
  font-size: 1rem;
}

.section-title {
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  font-weight: 600;
  color: #1e2b4a;
  border-bottom: 3px solid #2c3e50;
  padding-bottom: 0.5rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 2rem;
}

.bg-white {
  background-color: #fff;
}

.shadow-sm {
  box-shadow: 0 0.25rem 0.5rem rgba(0,0,0,0.05);
}

.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid #eaeaea;
  box-shadow: 0 2px 8px rgb(0 0 0 / 0.05);
}

.navbar-brand {
  font-size: 1.5rem;
}

.navbar-nav {
  gap: 0.5rem;
  display: flex;
  align-items: center;
}

.nav-link {
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1.8px solid transparent;
  border-radius: 0.6rem;
  transition: all 0.3s ease;
  color: #2c3e50 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
}

.nav-link:hover, 
.nav-link.active {
  background-color: #1e2b4a;
  border-color: #1e2b4a;
  color: #fff !important;
  box-shadow: 0 4px 8px rgb(30 43 74 / 0.3);
}

.hero-section {
  background-color: #f9fafb;
  padding: 100px 1rem;
  text-align: center;
}

.hero-section h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
  color: #2c3e50;
}

.hero-section p {
  font-size: 1.2rem;
  color: #4a5a72;
  margin-bottom: 2rem;
}

.hero-img {
  width: 100%;
  max-width: 720px;
  height: auto;
  border-radius: 1rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  margin: 30px auto 0;
  display: block;
}

.container {
  max-width: 960px;
  padding-left: 15px;
  padding-right: 15px;
}

.card {
  border: none;
  border-radius: 0.8rem;
  box-shadow: 0 6px 15px rgb(0 0 0 / 0.07);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 25px rgb(30 43 74 / 0.3);
}

.card-img-top {
  border-top-left-radius: 0.8rem;
  border-top-right-radius: 0.8rem;
  object-fit: cover;
  height: 220px;
  width: 100%;
}

.fade-in-up {
  animation: fadeInUp 1s ease forwards;
  opacity: 0;
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.bg-footer {
  background-color: #1e2b4a;
  color: #fff;
  padding: 1rem 0;
  font-size: 0.9rem;
}

.ratio {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 8px 25px rgb(0 0 0 / 0.1);
}

.ratio iframe {
  border: 0;
  border-radius: 1rem;
}

.col-md-6.d-flex p.text-muted {
  font-style: italic;
  font-size: 0.95rem;
  color: #64748b;
  padding-left: 1rem;
  border-left: 3px solid #1e2b4a;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.2rem;
  }
  .hero-img {
    max-width: 100%;
  }
  .col-md-6.d-flex p.text-muted {
    border-left: none;
    padding-left: 0;
    text-align: center;
  }
}

.navbar-nav .nav-link:hover {
  color: #0d6efd;
  text-decoration: underline;
  transition: 0.2s;
}

@media (max-width: 768px) {
  .row .col-md-4 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

@media (min-width: 576px) and (max-width: 768px) {
  .row .col-md-4 {
    flex: 0 0 50%;
    max-width: 50%;
  }
}

@media (min-width: 992px) {
  .row .col-md-4 {
    flex: 0 0 33.3333%;
    max-width: 33.3333%;
  }
}

.lb-close, .lb-prev, .lb-next {
  color: white !important;
  font-size: 2rem;
  opacity: 1 !important;
}