:root {
  --color-primary: #193d71;
  --color-secondary: #00a9cc;
  --color-accent: #ff9900;
  --color-text-light: #dee4ea;
  --color-text-dark: #333;
}

body {
  font-family: "Montserrat", sans-serif;
  margin: 0;
  line-height: 1.8;
  color: var(--color-text-dark);
  background-color: #fff;
}

.container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

h1 {
  color: var(--color-primary);
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.2;
}

h2 {
  color: var(--color-primary);
  font-weight: 700;
  margin-top: 20px;
  margin-bottom: 20px;
}

h3 {
  color: var(--color-primary);
  font-size: 1.4em;
  font-weight: 700;
  margin-top: 35px;
  margin-bottom: 15px;
}

p {
  text-wrap: balance;
  margin-bottom: 20px;
  font-size: 1.05em;
}

/* Article */
.article-header {
  padding: 0 20px 20px 20px;
  border-bottom: 1px solid #e0e0e0;
  max-width: 900px;
}

.article-meta {
  color: #666;
  font-size: 0.95em;
  margin-top: 15px;
}

.article-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 15px 20px;
}

.article-content ul {
  margin: 25px 0;
  padding-left: 0;
  list-style: none;
}

.article-content li {
  margin-bottom: 25px;
  padding-left: 30px;
  position: relative;
}

.article-content li:before {
  content: "•";
  color: var(--color-accent);
  font-weight: bold;
  font-size: 1.5em;
  position: absolute;
  left: 0;
  top: -5px;
}

.article-content strong {
  color: var(--color-primary);
  font-weight: 700;
}

.highlight-box {
  background-color: #f9f9f9;
  border-left: 4px solid var(--color-accent);
  padding: 25px 30px;
  margin: 40px 0;
  font-style: italic;
}

.cta-section {
  background-color: var(--color-secondary);
  color: var(--color-text-light);
  padding: 60px 0;
  text-align: center;
  margin-top: 60px;
}

.cta-section h3 {
  color: var(--color-text-light);
  margin-top: 0;
}

.cta-section p {
  color: var(--color-text-light);
  max-width: 600px;
  margin: 20px auto 30px auto;
}

footer {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  text-align: center;
  padding: 30px 0;
  font-size: 0.9em;
}

/* Responsive */
@media (max-width: 768px) {
  .main-nav {
    flex-direction: column;
    gap: 20px;
  }

  .nav-links {
    flex-direction: column;
    gap: 15px;
  }

  h1 {
    font-size: 2em;
  }

  h2 {
    font-size: 1.5em;
  }

  .article-content {
    padding: 40px 20px;
  }
}

/* ——— Blog Index ——— */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 50px;
  max-width: 900px;
  margin: 0 auto;
}

.blog-card {
  padding: 20px;
  border: 1px solid var(--color-primary);
  border-radius: 16px;
}

.blog-card h2,
.blog-card h1 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.blog-card h2 a,
.blog-card h1 a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.blog-card h2 a:hover,
.blog-card h1 a:hover {
  color: var(--color-accent);
}

.blog-card p {
  margin-bottom: 20px;
  font-size: 1em;
}

@media (max-width: 768px) {
  .blog-list {
    padding: 0 20px;
  }
}