body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9f9f9;
  color: #333;
  margin: 0;
  padding: 0;
}
header {
  background-color: #0f172a;
  color: #fff;
  text-align: center;
  padding: 2em 1em;
}
.tagline {
  font-size: 1.2em;
  color: #cbd5e1;
}
main {
  padding: 2em;
}
h2 {
  color: #0f172a;
}
.tools-container, .updates {
  margin-bottom: 2em;
}
footer {
  background-color: #1e293b;
  color: #cbd5e1;
  text-align: center;
  padding: 1em;
  position: relative;
  bottom: 0;
  width: 100%;
}
.tool {
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  padding: 1em;
  margin: 1em 0;
}