/* リセットとベース */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: sans-serif;
  background: #f8f9fa;
  color: #333;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
header {
  background: #4a90e2;
  color: #fff;
  text-align: center;
  padding: 1.5rem;
}
main {
  flex: 1;
  padding: 2rem;
}
.genre-section + .genre-section {
  margin-top: 3rem;
}
.genre-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  border-left: 4px solid #4a90e2;
  padding-left: .5rem;
  color: #4a90e2;
}
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}
.game-item {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform .2s, box-shadow .2s;
}
.game-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}
.game-item img {
  width: 100%;
  display: block;
}
.game-item h3 {
  padding: .75rem;
  text-align: center;
}
.game-item img {
  max-width: 150px;
  max-height: 100px;
  width: auto;
  height: auto;
}
footer {
  background: #ececec;
  text-align: center;
  padding: 1rem;
}