.principal-hero {
  background:#EBFDFD;
  color: #5f6779;
  text-align: center;
  padding: 80px 20px;
}

.principal-hero h1 {
  font-size: 40px;
  margin-bottom: 10px;
}

.tagline {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 15px;
}

.hero-description {
  max-width: 700px;
  margin: auto;
  font-size: 16px;
  opacity: 0.9;
}

.principal-features {
  padding: 100px 20px;
  text-align: center;
  background: #f3fcfd;
}

.principal-features h2 {
  font-size: 30px;
  margin-bottom: 60px;
  color: #003b44;
}

/* FLEX GRID */
.feature-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 35px;
  max-width: 1100px;
  margin: 0 auto;
}

/* CARD */
.feature-card {
  flex: 0 0 320px;
  background: #ffffff;
  padding: 45px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.05);
  transition: 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 45px rgba(0, 169, 188, 0.15);
}

/* NUMBER */
.feature-number {
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, #00c9d8, #0097a7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
}

/* TITLE */
.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #003b44;
}

/* TEXT */
.feature-card p {
  font-size: 15px;
  line-height: 1.6;
  color: #4a6b73;
}

.principal-why {
  padding: 60px 0 0 0;
  text-align: center;
}

.title {
  font-size: 2rem;
  margin-bottom: 30px;
  color: #5f6779;
}

.principal-cta {
  padding: 80px 20px;
  text-align: center;
  background: #111827;
  color: #fff;
}

.cta-btn {
  margin-top: 20px;
  padding: 12px 28px;
  border: none;
  background: #2563eb;
  color: #fff;
  font-size: 15px;
  border-radius: 6px;
  cursor: pointer;
  transition: 0.3s;
}

.cta-btn:hover {
  background: #1d4ed8;
}