body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f8f9fa;
  color: #222;
  margin: 0;
  padding: 0;
}
.topbar {
  background: #222;
  color: #fff;
  padding: 0.5em 1em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar-title a {
  color: #fff;
  text-decoration: none;
  font-size: 1.7em;
  font-weight: bold;
  letter-spacing: 1px;
}
.topbar-nav {
  display: flex;
  gap: 1.2em;
}
.topbar-nav a {
  color: #fff;
  text-decoration: none;
  font-size: 1em;
  padding: 0.2em 0.5em;
  border-radius: 3px;
  transition: background 0.2s;
}
.topbar-nav a:hover {
  background: #444;
}
main {
  max-width: 900px;
  margin: 2em auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
  padding: 2em;
}
h1, h2, h3 {
  color: #1a202c;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
}
th, td {
  border: 1px solid #e2e8f0;
  padding: 0.6em 0.8em;
  text-align: left;
}
th {
  background: #f1f3f6;
}
.bottombar {
  text-align: center;
  color: #888;
  font-size: 0.95em;
  margin: 2em 0 1em 0;
}
.bottombar a {
  color: #888;
  text-decoration: underline;
  margin: 0 0.5em;
}