:root {
  --accent-blue: #2b6ea6;
  --accent-soft-blue: #5aa6d8;
  --text-main: #333;
  --text-soft: #555;
  --highlight: #e3662a;
}

/* ------------------------------
   全体
------------------------------ */

body {
  margin: 0;
  font-family: "Yu Gothic", "游ゴシック体", Meiryo, sans-serif;
  background: linear-gradient(to bottom, #d9e9f7 0%, #eef5fa 40%, #ffffff 100%);
  color: var(--text-main);
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 32px 40px;
  box-sizing: border-box;
}

/* ------------------------------
   ロゴ
------------------------------ */

.header {
  text-align: center;
  margin-bottom: 40px;
}

.logo-image {
  height: 160px;
  margin-bottom: 6px;
}

.logo-text-en {
  font-size: 16px;
  letter-spacing: 0.2em;
  color: var(--accent-soft-blue);
}

/* ------------------------------
   メッセージ
------------------------------ */

.message {
  text-align: center;
  line-height: 1.9;
  font-size: 18px;
  color: var(--text-soft);
  margin-bottom: 40px;
}

.highlight-date {
  color: var(--highlight);
  font-weight: bold;
}

/* ------------------------------
   下3枚の写真（重なりを忠実に再現）
------------------------------ */

.photos {
  display: flex;
  justify-content: center;
  gap: 0;                 
  margin-top: 16px;
  position: relative;
}

.photo-card {
  flex: 0 0 32%;
  position: relative;
}

.photo-card img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 0;       
  display: block;
  border: 10px solid #fff;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.18); 
}

/* 左：少し下げて、中央の下に潜る */
.photo-card.left {
  transform: translateY(18px) rotate(-3deg);
  z-index: 1;
  margin-right: -40px;    
}

/* 中央：一番手前（最も z-index が高い） */
.photo-card.center {
  transform: translateY(-10px);
  z-index: 3;
}

/* 右：少し下げて、中央の下に潜る */
.photo-card.right {
  transform: translateY(18px) rotate(3deg);
  z-index: 2;
  margin-left: -40px;     
}

/* ------------------------------
   スマホ
------------------------------ */

@media (max-width: 640px) {
  .page {
    padding: 20px 16px;
  }

  .logo-image {
    height: 130px;
  }

  .message {
    font-size: 15px;
  }

  .photo-card img {
    border: 6px solid #fff;
  }
}