/* ===== 全体 ===== */
body {
  margin: 0;
  font-family: "Noto Sans JP", "Nunito", sans-serif;
  line-height: 1.8;
  color: #333;
  background: #f5f7fa;
}

.nav {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

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

/* ===== ヘッダー ===== */
header {
  background: linear-gradient(135deg, #4facfe, #00c6ff);
  color: #fff;
  text-align: center;
  padding: 3rem 1rem;
}

header h1 {
  margin: 0;
  font-size: 2.2rem;
  font-weight: 600;
}

header p {
  margin-top: 0.5rem;
  font-size: 1rem;
  opacity: 0.95;
}
/* ===== ヘッダー写真 ===== */
.site-header {
  background-image: url("images/header.jpg");
  background-size: cover;
  background-position: center;
  color: #fff;
  text-align: center;
  padding: 4rem 1rem;
  position: relative;
}

/* 文字を読みやすくする半透明レイヤー */
.header-overlay {
  background: rgba(0, 0, 0, 0.45);
  padding: 2.5rem 1rem;
  border-radius: 16px;
  max-width: 900px;
  margin: 0 auto;
}

/* タイトル調整 */
.site-header h1 {
  margin: 0;
  font-size: 2.4rem;
}

.site-header p {
  margin: 0.5rem 0 1.5rem;
  font-size: 1.1rem;
}

/* ===== メイン ===== */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
}


/* ===== セクション ===== */
section {
  margin-bottom: 3rem;
}

section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  border-left: 6px solid #4facfe;
  padding-left: 0.75rem;
}

/* ===== カード ===== */
.card {
  background: #fff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

/* ===== リスト ===== */
ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.5rem;
}

/* ===== お問い合わせ ===== */
.contact a {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.7rem 1.4rem;
  background: #4facfe;
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  font-weight: 500;
  transition: background 0.3s;
}

.contact a:hover {
  background: #3a9de0;
}

/* ===== フッター ===== */
footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
  color: #777;
}

/* ===== スマホ対応 ===== */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.8rem;
  }

  section h2 {
    font-size: 1.3rem;
  }
}