/* 基本設定 */
body {
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  margin: 0;
  color: #333;
  background-color: #fdfdfd;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.text-center {
  text-align: center;
}

/* Header */
.site-header {
  background: #3a9fbf; /* 落ち着いた水色 */
  color: #fff;
  padding: 20px 0;
}
.site-header h1 {
  margin: 0;
  font-size: 1.8rem;
  text-align: center;
}

/* Hero */
.hero {
  background: #e9f4f7; /* やわらかい薄水色 */
  padding: 80px 20px;
}
.hero h2 {
  font-size: 2.4rem;
  color: #2b7a8c; /* 深めのブルーグリーン */
  margin-bottom: 15px;
}
.hero p {
  font-size: 1.2rem;
  color: #555;
}

/* Services */
.services {
  background: #f6fafb; /* 白に近い水色グレー */
  padding: 60px 20px;
}
.services h3 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 40px;
  color: #2b7a8c;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: #fff;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 3px 6px rgba(0,0,0,0.1);
}
.card h4 {
  margin-top: 0;
  color: #3a9fbf;
  font-size: 1.3rem;
  margin-bottom: 10px;
}

/* About */
.about {
  padding: 60px 20px;
}
.about h3 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 20px;
  color: #2b7a8c;
}
.about p {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
  color: #444;
}

/* Contact */
.contact {
  background: #e9f4f7;
  padding: 60px 20px;
}
.contact h3 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #2b7a8c;
}
.btn-primary {
  display: inline-block;
  padding: 12px 30px;
  background: #3a9fbf;
  color: #fff;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.3s;
}
.btn-primary:hover {
  background: #2b7a8c;
}

/* Footer */
.site-footer {
  background: #333;
  color: #ccc;
  text-align: center;
  padding: 20px 0;
  font-size: 0.9rem;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 3px 6px rgba(0,0,0,0.1);
}
.contact-form .form-group {
  margin-bottom: 20px;
}
.contact-form label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  color: #2b7a8c;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  box-sizing: border-box;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #3a9fbf;
  outline: none;
}
.contact-form button {
  width: 100%;
  margin-top: 10px;
}

/* チェックボックス系 */
.checkbox-label {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 1rem;
  color: #444;
}
.checkbox-label input[type="checkbox"] {
  margin-right: 8px;
  vertical-align: middle;
}

/* エラー文言スタイル */
.error {
  color: #ef4444;
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
}

/* "*" の必須マーク */
.required {
  color: #ef4444;
}

/* 全体見た目の統一 */
.contact-form textarea {
  resize: vertical;
}