* { box-sizing: border-box; }
body {
  font-family: "游ゴシック", "Yu Gothic", sans-serif;
  margin: 0 auto;
  max-width: 720px;
  padding: 0 1em 3em;
  background: #fdf8f2;
  color: #222;
  font-size: 18px;
  line-height: 1.8;
}
h1 { color: #b5501e; font-size: 1.6em; }
h2 { color: #b5501e; font-size: 1.3em; margin-top: 1.6em; }
a { color: #a8430f; }

/* ヘッダー・ナビゲーション */
#site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8em;
  padding: 1em 0;
  border-bottom: 4px solid #e08830;
  margin-bottom: 1em;
}
.site-title a {
  color: #b5501e;
  font-size: 1.3em;
  font-weight: bold;
  text-decoration: none;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em 1em;
}
.site-nav a {
  color: #444;
  text-decoration: none;
  font-size: 0.95em;
  padding: 0.3em 0.2em;
  border-bottom: 3px solid transparent;
}
.site-nav a:hover,
.site-nav a:focus { border-bottom-color: #e08830; }
.site-nav a.active {
  color: #b5501e;
  font-weight: bold;
  border-bottom-color: #b5501e;
}

/* フッター */
#site-footer {
  margin-top: 3em;
  padding-top: 1em;
  border-top: 1px solid #eadfce;
  color: #777;
  font-size: 0.9em;
  text-align: center;
}

/* TOPページ：主要コンテンツへの導線メニュー */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9em;
  padding: 0;
  margin: 1em 0 2em;
  list-style: none;
}
.menu-grid a {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 4.2em;
  padding: 0.8em;
  background: #fff;
  border: 2px solid #eadfce;
  border-radius: 10px;
  color: #b5501e;
  font-weight: bold;
  font-size: 1.05em;
  text-decoration: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.menu-grid a:hover,
.menu-grid a:focus {
  border-color: #e08830;
  background: #fff6ec;
}

/* SNSタイムライン（準備中プレースホルダー） */
.sns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1em;
  padding: 0;
  list-style: none;
}
.sns-card {
  background: #fff;
  border: 1px solid #eadfce;
  border-radius: 10px;
  padding: 1.2em;
  text-align: center;
  color: #777;
}
.sns-card strong { display: block; color: #333; margin-bottom: 0.4em; }

/* お知らせ・イベント・セミナー等の共通カード一覧 */
.card-list { list-style: none; padding: 0; }
.card-list li {
  background: #fff;
  border: 1px solid #eadfce;
  border-left: 8px solid #e08830;
  border-radius: 8px;
  margin-bottom: 0.8em;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.card-list li a,
.card-list li .card-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8em;
  padding: 1em 1.1em;
  color: #222;
  text-decoration: none;
  font-size: 1.05em;
}
.card-list li a:hover,
.card-list li a:focus { background: #fff6ec; }
.card-list li .title { flex: 1; font-weight: bold; }
.card-list li .date {
  display: inline-block;
  color: #fff;
  background: #e08830;
  font-size: 0.8em;
  padding: 0.25em 0.7em;
  border-radius: 4px;
  white-space: nowrap;
}
.card-list li .arrow { font-size: 1.6em; color: #e08830; line-height: 1; }
.card-list li .card-row .arrow { visibility: hidden; }

/* 活用事例カード（カテゴリ絞り込み対象） */
#case-list { list-style: none; padding: 0; }
.case-card {
  background: #fff;
  border: 1px solid #eadfce;
  border-radius: 8px;
  padding: 1em 1.1em;
  margin-bottom: 0.8em;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.case-card .date {
  display: inline-block;
  color: #fff;
  background: #b5501e;
  font-size: 0.8em;
  padding: 0.25em 0.7em;
  border-radius: 4px;
  margin-bottom: 0.5em;
}
.case-card .title { display: block; font-size: 1.1em; margin-bottom: 0.3em; }
.case-card p { margin: 0; color: #555; }

/* カテゴリ絞り込みボタン（補助金ページ等） */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.6em; margin: 1em 0; }
.filter-bar button {
  font-size: 1em;
  padding: 0.5em 1em;
  border: 2px solid #e08830;
  background: #fff;
  color: #b5501e;
  border-radius: 20px;
  cursor: pointer;
}
.filter-bar button.active { background: #e08830; color: #fff; }

/* バナー（外部公式サイト等へのリンク） */
.banner {
  display: block;
  max-width: 420px;
  margin: 1em 0 2em;
  padding: 1.4em 1.6em;
  background: linear-gradient(135deg, #e08830, #b5501e);
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
  text-align: center;
  text-decoration: none;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.banner:hover,
.banner:focus { opacity: 0.9; }

/* 準備中・確認中の案内ボックス */
.notice-box {
  background: #fff8ec;
  border: 1px dashed #e08830;
  border-radius: 8px;
  padding: 1em 1.2em;
  color: #7a5a2f;
  margin: 1em 0;
}

/* スマートフォン向け */
@media (max-width: 480px) {
  body { font-size: 17px; }
  .menu-grid { grid-template-columns: 1fr; }
  #site-header { flex-direction: column; align-items: flex-start; }
}