body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #0b0c10;
  color: #e8eef7;
}
a { color: inherit; text-decoration: none; }
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  background: rgba(19, 21, 26, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.logo a {
  font-size: 1.2rem;
  font-weight: bold;
  color: #7aa2f7;
}
.menu {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}
.menu > li {
  position: relative;
}
.menu > li > a {
  display: block;
  padding: 15px 20px;
  transition: background 0.3s;
}
.menu > li:hover > a {
  background: rgba(255,255,255,0.05);
}
.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(19, 21, 26, 0.95);
  backdrop-filter: blur(8px);
  list-style: none;
  padding: 0;
  margin: 0;
  min-width: 200px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}
.submenu li a {
  display: block;
  padding: 10px 15px;
}
.submenu li a:hover {
  background: rgba(255,255,255,0.05);
}
.dropdown:hover .submenu {
  display: block;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}
.content {
  padding: 20px;
  max-width: 1000px;
  margin: auto;
}