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

body {
  font-family: 'Courier New', Courier, monospace;
  font-size: 15px;
  line-height: 1.5;
  color: #1d3557;
  background: #f8f9fa;
  padding: 0;
  margin: 0;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 20px;
}

header {
  background: #1d3557;
  color: #f8f9fa;
  padding: 30px 20px;
  border: 3px solid #1d3557;
}

header h1 {
  font-family: 'Courier New', Courier, monospace;
  font-size: 28px;
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 2px;
  max-width: 1400px;
  margin: 0 auto;
}

.grid-main {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  margin-top: 40px;
}

.content-primary {
  grid-column: 1;
}

.content-sidebar {
  grid-column: 2;
  display: grid;
  grid-template-rows: auto auto;
  gap: 30px;
  align-content: start;
}

article section {
  background: #f8f9fa;
  padding: 0;
  margin-bottom: 30px;
}

h2 {
  font-family: 'Courier New', Courier, monospace;
  font-size: 20px;
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 3px solid #1d3557;
  color: #1d3557;
}

h3 {
  font-family: 'Courier New', Courier, monospace;
  font-size: 17px;
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 25px 0 15px 0;
  color: #e63946;
}

p {
  margin-bottom: 15px;
  color: #1d3557;
}

.cta-box {
  background: #f4a261;
  border: 3px solid #1d3557;
  padding: 20px;
  margin: 30px 0;
}

.cta-box p {
  margin-bottom: 12px;
  color: #1d3557;
}

.cta-box p:last-child {
  margin-bottom: 0;
}

.cta-box a {
  color: #1d3557;
  text-decoration: underline;
  font-weight: bold;
}

.cta-box a:hover {
  color: #e63946;
}

.sidebar-card {
  background: #1d3557;
  color: #f8f9fa;
  padding: 25px;
  border: 3px solid #1d3557;
}

.sidebar-card h3 {
  color: #f4a261;
  border-bottom: 2px solid #f4a261;
  padding-bottom: 8px;
  margin-bottom: 15px;
}

.sidebar-card p {
  color: #f8f9fa;
  font-size: 14px;
  margin-bottom: 12px;
}

.sidebar-card ul {
  list-style: none;
  padding: 0;
  margin: 15px 0 0 0;
}

.sidebar-card ul li {
  padding: 8px 0;
  border-top: 1px solid #f4a261;
  color: #f8f9fa;
  font-size: 14px;
}

.sidebar-card ul li:first-child {
  border-top: none;
}

footer {
  margin-top: 60px;
  padding: 30px 20px;
  background: #1d3557;
  color: #f8f9fa;
  border: 3px solid #1d3557;
  text-align: center;
}

footer p {
  color: #f8f9fa;
  font-size: 13px;
  margin: 0;
}

a {
  color: #e63946;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  font-family: 'Courier New', Courier, monospace;
  background: #1d3557;
  color: #f4a261;
  padding: 2px 6px;
  border: 1px solid #1d3557;
}

pre {
  background: #1d3557;
  color: #f8f9fa;
  padding: 15px;
  border: 3px solid #1d3557;
  overflow-x: auto;
  margin: 20px 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: #f4a261;
}

@media (max-width: 900px) {
  .grid-main {
    grid-template-columns: 1fr;
  }

  .content-primary {
    grid-column: 1;
  }

  .content-sidebar {
    grid-column: 1;
  }
}

@media (max-width: 600px) {
  header h1 {
    font-size: 22px;
    letter-spacing: 1px;
  }

  h2 {
    font-size: 18px;
  }

  h3 {
    font-size: 16px;
  }

  body {
    font-size: 14px;
  }

  .container {
    padding: 20px 15px;
  }
}