/* ======================
   RESET
====================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial;
  color: #111;
  background: #fff;
}

/* ======================
   背景
====================== */
.bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -999;
  overflow: hidden;
}

.bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ======================
   フルページ専用
====================== */

/* 左ナビ消す */
.fullpage .sidebar {
  display: none;
}

/* レイアウトを1カラムに */
.fullpage .layout {
  display: block;
}

/* メインは広く（LP用） */
.fullpage .main {
  max-width: 100%;
  margin: 0 auto;
}

/* 記事は読みやすく中央 */
.fullpage .article {
  max-width: 100%;
  margin: 0 auto;
  background: rgba(255,255,255,0.95);
  padding: 40px;
}

/* tagline消す */
.fullpage .tagline {
  display: none;
}

/* ======================
   HEADER
====================== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* ★ 重要（ナビ崩れ防止） */
.header-left {
  flex: 1;
  min-width: 0;
}

.header-right {
  flex-shrink: 0;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
}

/* tagline #777*/
.tagline {
  font-size: 13px;
  color: #bf0808;

  max-width: 750px;
  white-space: normal;
  word-break: break-word;
}

/* ナビ */
.nav-link {
  font-size: 13px;
  text-decoration: none;
  color: #333;
}

/* ======================
   LAYOUT
====================== */
.layout {
  display: flex;
}

/* サイドバー */
.sidebar {
  width: 220px;
  padding: 30px;
  background: rgba(255,255,255,0.45);
  backdrop-filter: blur(8px);

  display: flex;
  flex-direction: column;
}

/* 左ナビリンク */
.side-link {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 6px 0;
  text-decoration: none;
  color: #111;
  border-bottom: 1px solid #eee;
}

/* メイン */
.main {
  flex: 1;
  padding: 30px;
}

/* ======================
   GRID
====================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

/* ======================
   CARD
====================== */
.card {
  display: block;
  text-decoration: none;
  color: #111;
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card h3 {
  font-size: 14px;
  margin-top: 10px;
}

/* ======================
   ARTICLE（通常）
====================== */
.article {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255,255,255,0.9);
  padding: 30px;
}

.article img {
  width: 100%;
  height: auto;
  margin: 20px 0;
}

/* ======================
   フッター
====================== */
.footer {
  text-align: center;
  padding: 30px;
  font-size: 12px;
  color: #666;
}

/* ======================
   スマホ対応
====================== */
@media (max-width: 768px){

  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .header-right {
    display: none;
  }

  .sidebar {
    display: none;
  }

  .main {
    padding: 20px;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  /* スマホは全文表示 */
  .tagline {
    max-width: 100%;
    white-space: normal;
    overflow: visible;
  }

  /* フルページも余白調整 */
  .fullpage .main {
    max-width: 100%;
  }

  .fullpage .article {
    padding: 20px;
  }
}