<style>
  /* ==========================================================================
     ★ 魔法の2行（ブラウザ標準のスムーズスクロール）
     ========================================================================== */
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  /* ==========================================================================
     PC用スタイル
     ========================================================================== */
  .fg-header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 80px;
    background-color: #ffffff;
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    box-sizing: border-box;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  }

  .fg-header-logo-container { padding-left: 40px; height: 100%; display: flex; align-items: center; }
  .fg-header-logo { display: flex; align-items: center; text-decoration: none; height: 100%; }
  .fg-header-logo img { max-height: 40px; width: auto; display: block; }
  .fg-header-right { display: flex; align-items: center; height: 100%; }
  .fg-header-nav { margin-right: 80px; }
  .fg-header-nav ul { display: flex; list-style: none; margin: 0; padding: 0; gap: 32px; }
  .fg-header-nav a { text-decoration: none; color: #1a1a1a; font-size: 15px; font-weight: 600; transition: color 0.3s ease; }
  .fg-header-nav a:hover { color: #f38220; }
  .fg-header-cta { height: 100%; }
  .fg-header-cta-btn { display: flex; align-items: center; justify-content: center; height: 100%; padding: 0 40px; background: linear-gradient(90deg, #f89e2e 0%, #f07b23 100%); color: #ffffff; text-decoration: none; font-size: 16px; font-weight: bold; transition: opacity 0.3s ease; }
  .fg-header-cta-btn:hover { opacity: 0.85; }
  .fg-header-cta-icon { width: 20px; height: 20px; margin-right: 8px; fill: currentColor; }

  /* ==========================================================================
     スマホ・タブレット用スタイル
     ========================================================================== */
  @media (min-width: 1025px) {
    .fg-hamburger-btn { display: none; }
    .fg-mobile-menu { display: none !important; }
  }

  @media (max-width: 1024px) {
    .fg-header-right { display: none; }
    .fg-header-logo-container { padding-left: 20px; }
    .fg-header-wrapper.is-open { border-bottom: 1px solid #f0f0f0; }
    .fg-hamburger-btn { display: flex; align-items: center; justify-content: center; background: transparent; border: none; padding: 0; margin-right: 20px; cursor: pointer; width: 40px; height: 40px; }
    .fg-mobile-menu { position: fixed; top: 80px; left: 0; width: 100%; height: calc(100vh - 80px); background-color: #ffffff; z-index: 999; display: none; flex-direction: column; box-sizing: border-box; padding: 0 24px; overflow-y: auto; }
    .fg-mobile-menu.is-active { display: flex; }
    .fg-mobile-nav { list-style: none; padding: 0; margin: 0; }
    .fg-mobile-nav li { border-bottom: 1px solid #f0f0f0; }
    .fg-mobile-nav a { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; text-decoration: none; }
    .fg-mobile-nav-text { display: flex; flex-direction: column; }
    .fg-mobile-nav-text .ja { color: #1a2b4c; font-size: 16px; font-weight: bold; margin-bottom: 4px; }
    .fg-mobile-nav-text .en { color: #a0a0a0; font-size: 11px; }
    .fg-mobile-cta { margin-top: 40px; margin-bottom: 40px; width: 100%; display: flex; justify-content: center; }
    .fg-mobile-cta-btn { width: 100%; height: 60px; background: linear-gradient(90deg, #f89e2e 0%, #f07b23 100%); border-radius: 999px; display: flex; align-items: center; justify-content: center; color: #ffffff; font-weight: bold; text-decoration: none; font-size: 16px; }
  }
</style>