/* ベース設定 */
body {
  font-family: "Noto Sans JP", sans-serif;
  margin: 0;
  color: #222;
  background-color: #f9f9f9;
  line-height: 1.8;
}

/* ヘッダー */
.main-header {
  position: relative;
  width: 100%;
  height: 380px;
  overflow: hidden;
}

.header-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(70%);
}

.overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
}

.overlay h1 {
  font-size: 2.4rem;
  margin-bottom: 0.4em;
}

.overlay p {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* 会社情報セクション */
.about {
  padding: 60px 20px;
  max-width: 800px;
  margin: 0 auto;
}

.about h2 {
  text-align: center;
  font-size: 1.8rem;
  color: #003366;
  margin-bottom: 30px;
  border-bottom: 3px solid #0077cc;
  display: inline-block;
  padding-bottom: 5px;
}

/* テーブル */
.company-table {
  width: 100%;
  border-collapse: collapse;
  background-color: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.company-table th, .company-table td {
  border: 1px solid #ccc;
  padding: 15px;
}

.company-table th {
  background-color: #003366;
  color: white;
  width: 30%;
  text-align: left;
}

.company-table tr:nth-child(even) td {
  background-color: #f2f8fc;
}

/* フッター */
footer {
  background-color: #002244;
  color: #fff;
  text-align: center;
  padding: 15px;
  font-size: 0.9rem;
}