/* Reset & font */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Microsoft JhengHei", sans-serif;
  color: #333;
  text-align: center;
  background: linear-gradient(180deg, #A47FFF 0%, #7BDCFF 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  padding: 20px 0 10px;
}
header .logo {
  width: 80px;
  height: auto;
  display: block;
  margin: 0 auto 10px;
}
header h1 {
  font-size: 2rem;
  font-weight: bold;
  color: #2E2E2E;
}

/* Subtitle */
.subtitle {
  font-size: 1.2rem;
  margin: 10px 0 30px;
  line-height: 1.5;
}

/* 按鈕區 */
.btn-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 0 20px;
  margin-bottom: auto;
}
.btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 260px;
  height: 260px;
  background-color: #F7D46E;
  border-radius: 30px;
  text-decoration: none;
  color: #4A4729;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform .1s;
}
.btn:hover {
  transform: translateY(-4px);
}
.btn-title {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 10px;
}
.btn-sub {
  font-size: 1rem;
  color: #6D6BE0;
}

/* Footer */
footer {
  padding: 20px 0;
}
footer p {
  font-size: 1rem;
  color: #555;
}