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

body {
  font-family: monospace;
  background: #fff;
  color: #111;
  padding: 40px 24px 60px;
}

.back { display: inline-block; margin-bottom: 24px; color: #2d7a2d; text-decoration: none; font-size: 13px; }
h1 { font-size: 20px; color: #2d7a2d; margin-bottom: 32px; }
h2 { font-size: 15px; margin: 32px 0 12px; border-bottom: 1px solid #eee; padding-bottom: 6px; }
h3 { font-size: 14px; margin-bottom: 8px; }

.questions { display: flex; flex-direction: column; gap: 16px; }
.qa { padding: 16px; background: #f9f9f9; border-left: 3px solid #2d7a2d; }
.q  { font-weight: bold; margin-bottom: 8px; }
p   { font-size: 13px; line-height: 1.6; }

pre {
  background: #111;
  color: #7fff7f;
  padding: 12px 16px;
  border-radius: 4px;
  font-size: 13px;
  overflow-x: auto;
}


.container {
  width: 100%;
  padding: 15px;
  background: #f9f9f9;
  border: 1px solid #ddd;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: #eafaea;
  padding: 10px;
  margin-bottom: 16px;
}

.nav-menu a { color: #2d7a2d; text-decoration: none; font-size: 13px; padding: 4px 0; }

.content { display: block; }

.main-content {
  padding: 16px;
  background: #fff;
  border: 1px solid #ddd;
}

.sidebar { display: none; }

@media (min-width: 768px) {
  .nav-menu {
    flex-direction: row;
    gap: 16px;
  }

  .content {
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: 16px;
    margin-top: 16px;
  }

  .sidebar {
    display: block;
    background: #eafaea;
    border: 1px solid #b5d9b5;
    padding: 16px;
    font-size: 13px;
    color: #2d7a2d;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
  }

  .content {
    grid-template-columns: 1fr 280px;
  }
}