/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #ffffff;
  color: #1a1a1a;
  line-height: 1.6;
  font-size: 16px;
}

/* Containers */
.container {
  width: 90%;
  max-width: 960px;
  margin: 0 auto;
  padding: 2em 1em;
}

/* Header */
.site-header {
  background-color: #f0f4f8;
  color: #003344;
  text-align: center;
  padding: 2em 1em;
  border-bottom: 4px solid #0077b6;
}

.site-header h1 {
  font-size: 2.5em;
  margin-bottom: 0.3em;
}

.site-header p {
  font-size: 1.2em;
  color: #555;
}

.site-logo {
  height: 48px;
  margin-right: 1rem;
  vertical-align: middle;
}

/* Navigation */
.nav-menu {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2em;
  padding-top: 1em;
}

.nav-menu a {
  text-decoration: none;
  color: #0077b6;
  font-weight: bold;
}

.nav-menu a:hover {
  text-decoration: underline;
}

/* Sections */
.section-block {
  background-color: #ffffff;
  padding: 2em;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 119, 182, 0.1);
  margin-bottom: 2em;
}

.section-block h2 {
  color: #0077b6;
  margin-bottom: 1em;
  border-bottom: 2px solid #0077b6;
  padding-bottom: 0.5em;
  font-size: 1.8em;
}

.section-block h3 {
  color: #005577;
  margin-top: 1.5em;
  font-size: 1.4em;
}

.section-block h4 {
  margin-top: 1em;
  color: #003344;
  font-size: 1.2em;
}

.section-block ul {
  margin-left: 1.5em;
  margin-top: 0.5em;
  margin-bottom: 1.5em;
}

.section-block ul li {
  margin-bottom: 0.5em;
}

/* Links */
a {
  color: #0077b6;
}

a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background-color: #f0f4f8;
  color: #444;
  text-align: center;
  padding: 2em 1em;
  border-top: 2px solid #e0e0e0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    flex-direction: column;
    gap: 1em;
  }

  .site-header h1 {
    font-size: 2em;
  }

  .section-block {
    padding: 1.5em;
  }
}