body {
  margin: 0;
  padding: 40px 0;
  background: #121212;
  font-family: Arial, sans-serif;
  color: #f0f0f0;
}

.page {
  width: 210mm;
  margin: 0 auto;
  padding: 20mm;
  background: #1e1e1e;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
  box-sizing: border-box;
}

.header {
  margin-bottom: 20px;
  border-bottom: 1px solid #444;
}

.footer {
  margin-top: 20px;
  border-top: 1px solid #444;
}

.logo {
  font-size: 2em;
  font-weight: bold;
  padding: 10px 0;
  color: #ffffff;
}

.foot {
  padding: 10px 0;
  color: #999;
  text-align: center;
  font-size: 0.8em;
}

.main {
  display: flex;
  gap: 20px;
}

.menu {
  width: 25%;
  border-right: 1px solid #444;
  padding-right: 10px;
  box-sizing: border-box;
}

.menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu li {
  margin-bottom: 12px;
}

.menu a {
  text-decoration: none;
  color: #daa520;
  transition: color 0.2s;
}

.menu a:hover {
  color: #ffffff;
}

.submenu ul {
  list-style: square;

}

.submenu li {
  margin-bottom: 12px;
}

.submenu a {
  text-decoration: none;
  color: #daa520;
  transition: color 0.2s;
}

.submenu a:hover {
  color: #ffffff;
}

.content {
  width: 75%;
  padding-left: 10px;
}

h1 {
  margin-top: 0;
  color: #ffffff;
}

p, li {
  font-size: 16px;
  line-height: 1.6;
  color: #e0e0e0;
}

/* mobile */

@media (max-width: 900px) {
  body {
    padding: 0;
    background: #121212;
  }

  .page {
    width: 100%;
    min-height: auto;
    padding: 16px;
    box-shadow: none;
    background: #1e1e1e;
  }

  .main {
    flex-direction: column;
  }

  .menu {
    border-right: none;
    padding-right: 0;
    margin-bottom: 20px;
  }

  .content {
    padding-left: 0;
  }
}