/* --------------------------------------------------
基本設定（PCベース）
-------------------------------------------------- */
body {
  background: #f4f4f4;
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.7;
  color: #222;
  display: flex;
  justify-content: center;
  padding: 40px 12px;
}

.document {
  background: #fff;
  padding: 40px 48px;
  max-width: 760px;
  width: 100%;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  box-sizing: border-box;
}

.addressee {
  font-size: 16px;
  margin-bottom: 40px;
}

.logo-area {
  text-align: right;
  /* PC・スマホとも右寄せ */
  margin-bottom: 32px;
}

.logo-area img {
  height: 60px;
  /* PC用 */
  width: auto;
  max-width: 100%;
  display: inline-block;
}

.title {
  font-weight: 600;
  text-align: center;
  margin: 0 0 40px;
  line-height: 1.4;
  font-size: 26px;
}

/* PC用タイトル（2行） */
.pc-title {
  display: block;
}

.sp-title {
  display: none;
}

.body {
  margin-bottom: 24px;
  font-size: 16px;
}

.links {
  margin: 40px 0;
}

.links h2 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
}

.links ul {
  padding-left: 20px;
  margin: 0;
}

.links li {
  margin-bottom: 6px;
  font-size: 16px;
}

.links a {
  color: #0066cc;
  text-decoration: none;
}

.links a:hover {
  text-decoration: underline;
}

.closing {
  text-align: right;
  margin-top: 60px;
  font-size: 16px;
}

/* --------------------------------------------------
スマホ最適化（幅767px以下）
囲み削除・余白最適化・タイトル3行化
-------------------------------------------------- */
@media screen and (max-width: 767px) {
  body {
    padding: 8px;
    background: #fff;
    display: block;
  }

  .document {
    padding: 0 16px;
    max-width: 100%;
    box-shadow: none;
    /* 囲み削除 */
  }

  /* タイトル切替 */
  .pc-title {
    display: none;
  }

  .sp-title {
    display: block;
    font-size: 22px;
    margin-bottom: 24px;
  }

  .logo-area {
    text-align: right;
    /* スマホでも右寄せ */
    margin-bottom: 24px;
  }

  .logo-area img {
    height: 48px;
    width: auto;
    max-width: 80%;
  }

  .addressee {
    margin-bottom: 24px;
    font-size: 15px;
  }

  .body {
    font-size: 15px;
    margin-bottom: 20px;
  }

  .links {
    margin: 28px 0;
  }

  .links h2 {
    font-size: 16px;
  }

  .closing {
    margin-top: 32px;
    font-size: 15px;
  }
}