@charset "utf-8";

/* --- 全体レイアウト --- */
#mainContent {
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  line-height: 1.8;
  color: #333;
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

/* --- ページヘッダー --- */
#pagetitle {
  padding: 40px 20px 20px;
}
.announcement-header {
  max-width: 900px;
  margin: 0 auto;
}
.announcement-header time {
  font-size: 0.9rem;
  color: #666;
  display: block;
  margin-bottom: 8px;
}

.announcement-header h1 {
  font-size: 1.75rem;
  font-weight: bold;
  line-height: 1.4;
  margin: 0;
  letter-spacing: 0.02em;
}

/* --- コンテンツセクション --- */
.info-section, 
.effort-section {
  margin-bottom: 60px;
}

/* 導入部分：ロゴとテキストの横並び */
.intro-block {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 20px;
}

.dx-logo {
  flex-shrink: 0; /* ロゴが潰れないように固定 */
}

.dx-logo img {
  max-width: 180px;
  height: auto;
  display: block;
}

.intro-text {
  flex: 1;
  font-size: 1.1rem;
}

/* --- 中見出し --- */
h2 {
  font-size: 1.3rem;
  border-left: 5px solid #ea6000; /* コーポレートカラーを想定 */
  padding: 8px 15px;
  margin-bottom: 24px;
  background: #f8f9fa;
}

/* --- 参考リンクエリア --- */
.reference-link {
  background: #fdfdfd;
  border: 1px solid #eee;
  padding: 20px;
  border-radius: 6px;
  margin-top: 15px;
}

.source-label {
  font-size: 0.8rem;
  font-weight: bold;
  color: #888;
  margin-bottom: 8px;
}

.reference-link a {
  color: #0066cc;
  text-decoration: underline;
  word-break: break-all;
  font-weight: 500;
}

.reference-link a:hover {
  text-decoration: none;
  opacity: 0.75;
}

/* --- アクションボタン --- */
.link-button-area {
  margin-top: 40px;
  text-align: center;
}

.btn-dx {
  display: inline-block;
  background: #ea6000;
  color: #fff !important;
  text-decoration: none !important;
  padding: 18px 50px;
  border-radius: 50px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(234, 96, 0, 0.2);
}

.btn-dx:hover {
  background: #ff7417; /* ホバー時に少し明るく */
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(234, 96, 0, 0.3);
}

/* --- レスポンシブ (タブレット・スマホ) --- */
@media (max-width: 768px) {
  #mainContent {
    margin: 20px auto;
  }

  .announcement-header h1 {
    font-size: 1.4rem;
  }

  .intro-block {
    flex-direction: column; /* ロゴと文章を縦並びに */
    text-align: center;
    gap: 20px;
  }

  .dx-logo img {
    max-width: 140px;
    margin: 0 auto;
  }

  .btn-dx {
    display: block;
    padding: 15px 20px;
  }
}