/* 共通CSS: nav / :root変数 / ベーススタイル */
/* news-fukulipa.html, news-fukuoka-forum.html, news-pressrelease.html, news-yomiuri.html, news-yomiuri-forum.html, 404.html で共有 */
/* このファイルはブラウザにキャッシュされ、ページ遷移時の再ダウンロードを防ぎます */


    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg:  #ffffff;
      --bg2: #f9f8f8;
      --bg3: #f0efef;
      --accent:  #e8363a;
      --text: #111111;
      --text-muted: rgba(17,17,17,0.55);
      --text-sub:   rgba(17,17,17,0.32);
      --border: rgba(17,17,17,0.1);
      --font-ja: 'Noto Sans JP', sans-serif;
      --font-en: 'Inter', sans-serif;
    }

    html { scroll-behavior: smooth; }
    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-ja);
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    /* ─── NAV ─── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 48px;
      height: 72px;
      background: rgba(255,255,255,0.97);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border);
    }
    .nav-logo { font-family: var(--font-en); font-weight: 900; font-size: 22px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text); text-decoration: none; }
    .nav-logo span { color: var(--accent); }
    .nav-links { display: flex; align-items: center; gap: 40px; list-style: none; }
    .nav-links a { font-size: 13px; font-weight: 500; letter-spacing: 0.08em; color: var(--text-muted); text-decoration: none; transition: color 0.2s; position: relative; }
    .nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 1px; background: var(--accent); transition: width 0.3s; }
    .nav-links a:hover { color: var(--text); }
    .nav-links a:hover::after { width: 100%; }
    .nav-dropdown { position: relative; }
    .nav-dropdown > a { display: flex; align-items: center; gap: 4px; }
    .nav-dropdown-arrow { font-size: 10px; opacity: 0.6; transition: transform 0.2s; }
    .nav-dropdown:hover .nav-dropdown-arrow { transform: rotate(180deg); }
    .nav-dropdown-menu { display: none; position: absolute; top: 100%; left: 50%; transform: translateX(-50%); background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 18px 0 6px; min-width: 210px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); list-style: none; z-index: 200; }
    .nav-dropdown:hover .nav-dropdown-menu { display: block; }
    .nav-dropdown-menu li a { display: block; padding: 10px 18px; font-size: 13px; color: var(--text); white-space: nowrap; text-decoration: none; }
    .nav-dropdown-menu li a::after { display: none !important; }
    .nav-dropdown-menu li a:hover { background: var(--bg2); color: var(--accent); }
    .nav-cta { background: var(--text); color: var(--bg) !important; padding: 10px 22px; border-radius: 2px; font-size: 12px !important; letter-spacing: 0.1em; }
    .nav-cta::after { display: none !important; }
    .nav-cta:hover { opacity: 0.8; color: var(--bg) !important; }
    .lang-toggle { display: flex; gap: 4px; margin-left: 24px; }
    .lang-btn { font-family: var(--font-en); font-size: 11px; font-weight: 600; letter-spacing: 0.05em; padding: 5px 10px; border: 1px solid var(--border); border-radius: 4px; background: transparent; color: var(--text-muted); cursor: pointer; transition: all 0.2s; }
    .lang-btn.active { background: var(--text); color: #fff; border-color: var(--text); }
    .lang-btn:hover:not(.active) { border-color: var(--text-muted); color: var(--text); }
    .nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; font: inherit; color: inherit; margin: 0; }
    .nav-hamburger span { display: block; width: 24px; height: 1.5px; background: var(--text); }