:root {
  --navy: #1a2332;
  --dark-blue: #243044;
  --accent: #2d7dd2;
  --accent-light: #4a9ae8;
  --text: #e8ecf1;
  --text-muted: #9aa5b4;
  --card-bg: #1e2a3a;
  --border: #2a3a4e;
  --white: #ffffff;
  --max-w: 1100px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--white); }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* Header */
header {
  background: var(--dark-blue);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }
nav a {
  color: var(--text-muted);
  margin-left: 28px;
  font-size: 0.9rem;
  font-weight: 500;
}
nav a:hover { color: var(--white); }

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}
.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 32px;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  padding: 0 0 60px;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.card .link {
  font-size: 0.9rem;
  font-weight: 600;
}

/* Resource page */
.resource-page {
  padding: 60px 0;
}
.resource-page h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.resource-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.resource-body {
  max-width: 720px;
}
.resource-body p {
  margin-bottom: 20px;
  color: var(--text);
}
.resource-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
  margin: 36px 0 16px;
}
.resource-body ul {
  margin: 0 0 20px 24px;
  color: var(--text);
}
.resource-body li { margin-bottom: 8px; }
.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s;
  margin: 8px 8px 8px 0;
}
.btn:hover { background: var(--accent-light); color: var(--white); }

/* Blog listing */
.blog-list { list-style: none; padding: 0; }
.blog-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.blog-list li:last-child { border-bottom: none; }
.blog-list h3 { margin-bottom: 6px; }
.blog-list h3 a { color: var(--white); }
.blog-list h3 a:hover { color: var(--accent-light); }
.blog-list .date { color: var(--text-muted); font-size: 0.85rem; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
footer a { color: var(--text-muted); }
footer a:hover { color: var(--accent-light); }

/* About */
.about-content { max-width: 720px; }
.about-content p { margin-bottom: 20px; }

/* Responsive */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.8rem; }
  .hero { padding: 48px 0 36px; }
  .cards { grid-template-columns: 1fr; }
  nav a { margin-left: 16px; font-size: 0.8rem; }
  .logo { font-size: 1.1rem; }
}