.container-main{
    display: flex;
    gap: 30px;
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}
.left-column {
  flex: 1 1 250px;
  max-width: 260px;
}

.right-column {
  flex: 3 1 700px;
}

/* Navigation Styles */
.links-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  overflow: hidden;
  background: #f9f9f9;
}

.links-nav ul li a {
  display: block;
  padding: 14px 18px;
  text-decoration: none;
  color: #333;
  font-weight: 500;
  border-bottom: 1px solid #e5e5e5;
  transition: all 0.3s ease;
}

.links-nav ul li a:hover,
.links-nav ul li a.active {
  background-color: #004aad;
  color: #fff;
}

/* Headings & Text */
.section-intro {
  color: #999;
  text-transform: uppercase;
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 10px;
}

.right-column h1 {
  color: #002b5b;
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 15px;
}

.right-column p {
  color: #444;
  line-height: 1.7;
  margin-bottom: 20px;
}

.right-column h2 {
  font-size: 22px;
  margin-top: 40px;
  color: #002b5b;
  border-left: 4px solid #004aad;
  padding-left: 10px;
  font-weight: 700;
}

/* Feature Boxes */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 25px;
}

.feature-box {
  background: #f8faff;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid #e0e7ff;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}

.feature-box:hover {
  background: #eaf1ff;
  transform: translateY(-3px);
}

.feature-box h3 {
  color: #004aad;
  font-size: 18px;
  margin-bottom: 8px;
}

/* ✅ Responsive */
@media (max-width: 900px) {
  .container-main {
    flex-direction: column;
    padding: 40px 5%;
  }

  /* Completely hide sidebar on small screens */
  .left-column {
    display: none;
  }

  .right-column {
    flex: 1 1 100%;
    max-width: 100%;
  }
}