body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  padding: 16px;
  background: #111;
  color: #f5f5f5;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

h1 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.lead {
  color: #ddd;
  margin-bottom: 20px;
}

/* ★ 横3枚カードレイアウト（最重要） */
.cards {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

.card {
  flex: 0 0 30%;
  position: relative;
  cursor: pointer;
}

.card img {
  width: 100%;
  display: block;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.6);
}

/* ロック状態 */
.locked-card img {
  filter: blur(6px) brightness(0.5);
}

.lock-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 40px;
  color: #ffdede;
  pointer-events: none;
}

/* カードの下のラベル */
.label {
  text-align: center;
  margin-top: 8px;
  font-size: 16px;
  color: #f5f5f5;
}

/* 結果表示 */
.result-box {
  margin-top: 24px;
  padding: 16px;
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
  white-space: pre-wrap;
  text-align: left;
}

/* 有料ボタン */
.btn-main {
  display: inline-block;
  margin-top: 24px;
  padding: 12px 20px;
  background: #ff7ad9;
  color: #111;
  border-radius: 999px;
  text-decoration: none;
  font-weight: bold;
}