:root {
  --primary-color: #006380;
  --secondary-color: #edf2f7;
  --text-color: #1a202c;
  --font-family: 'Inter', sans-serif;
  --font-size: 16px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size);
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--secondary-color);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  background-color: var(--primary-color);
  padding: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
}

nav a:hover, nav a.active {
  color: #a0aec0;
}

main {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
  flex: 1;
}

.hero {
  text-align: center;
  padding: 2rem 0;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.features {
  margin: 2rem 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.content {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 500px;
  margin: 2rem auto;
}

.contact-form input, .contact-form textarea {
  padding: 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  font-family: var(--font-family);
}

.contact-form button {
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.contact-form button:hover {
  background-color: #002733;
}

footer {
  background-color: var(--primary-color);
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

footer a {
  color: #29a6cc;
  text-decoration: none;
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 1rem;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.content h1, .content h2, .content h3 {
  margin-top: 2rem;
  color: var(--primary-color);
}

.content h1 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.content h2 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.content p {
  margin: 0.75rem 0;
  line-height: 1.7;
}

.content ul {
  margin: 0.75rem 0 1.5rem 1.5rem;
  padding-left: 1rem;
}

.content ul li {
  margin-bottom: 0.5rem;
  list-style-type: disc;
}

.content a {
  color: #007fa3;
  text-decoration: underline;
}

footer {
  margin-top: auto;
  position: relative;
  bottom: 0;
}