* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
               "Noto Sans JP", Meiryo, sans-serif;
  color: #333;
  position: relative;
  min-height: 100vh;
  background-color: #fafafa; /* 画像読込前の保険 */
}

/* 背景画像レイヤー */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("./bg_maintenance.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.65;
  z-index: -1;
}

/* 中央寄せ・レスポンシブ */
.container {
  min-height: 100vh;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px;

  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;

  /* コンテンツ自体は透過させない */
  background-color: transparent;
}

/* 各要素 */
.notice {
  font-size: 1.25rem;
  line-height: 1.6;
  color: #555;
  margin-bottom: 32px;
}


.logo img {
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto 32px;
}

.description {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 40px;
}

.contact h2 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.tel a {
  font-size: 1.2rem;
  font-weight: bold;
  color: #000;
  text-decoration: none;
}

/* スマホ微調整 */
@media screen and (max-width: 480px) {
  .container {
    padding: 32px 16px;
  }

  .description {
    font-size: 0.95rem;
  }

  .tel a {
    font-size: 1.1rem;
  }
  .notice {
    font-size: 1.15rem;
  }
 .tel a {
    display: inline-block;
    width: 100%;
    max-width: 320px;

    padding: 14px 16px;
    font-size: 1.1rem;
    font-weight: bold;

    color: #fff;
    background-color: #38A1DB;
    border: 2px solid #88D1F9;
    border-radius: 8px;

    text-align: center;
    text-decoration: none;
  }

  .tel a:active {
    opacity: 0.85;
  }
}