/* ===== HEADER ===== */
  header {
    background: var(--white);
    border-bottom: 1px solid var(--pink-light);
    position: sticky;
    top: 0;
    z-index: 100;
    animation: fadeDown 0.6s ease;
    padding: 0;
  }

  @keyframes fadeDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
  }

  .header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 26px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    box-sizing: border-box;
  }

  /* headerも section-inner と同じ左右位置に揃える */
  header {
    padding: 0;
  }

  /* PC: header-inner をコンテンツ幅に確実に揃える */
  @media (min-width: 769px) {
    .header-inner {
      max-width: 1100px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 26px;
      padding-right: 26px;
    }
  }

  /* ===== LOGO ===== */
  .logo {
    font-family: 'Noto Serif JP', serif;
    font-size: 22px;
    font-weight: 600;
    color: var(--pink-main);
    letter-spacing: 0.06em;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    gap: 2px;
  }
  .logo-sub {
    font-size: 9px;
    font-weight: 400;
    color: var(--gray-text);
    letter-spacing: 0.15em;
    font-family: 'Noto Sans JP', sans-serif;
  }

  /* ===== PC NAV ===== */
  nav {
    display: flex;
    gap: 4px;
    align-items: center;
  }

  /* 通常リンク */
  nav > a, .nav-item > a {
    font-size: 14px;
    color: var(--gray-text);
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.04em;
    padding: 6px 12px;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
  }
  nav > a:hover, .nav-item > a:hover { color: var(--pink-main); background: var(--pink-pale); }

  /* ドロップダウン親 */
  .nav-item {
    position: relative;
  }
  .nav-item > a {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .nav-item > a::after {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    transition: transform 0.2s;
    flex-shrink: 0;
  }
  .nav-item:hover > a::after { transform: rotate(225deg) translateY(-2px); }

  /* ドロップダウンメニュー - クリック開閉 */
  .nav-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border: 1px solid var(--pink-light);
    border-radius: 12px;
    min-width: 200px;
    padding: 8px 0;
    z-index: 999;
    white-space: nowrap;
    animation: ddFadeIn 0.18s ease;
  }
  @keyframes ddFadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
  }
  .nav-item.is-open .nav-dropdown { display: block; }
  .nav-item.is-open > a { color: var(--pink-main); background: var(--pink-pale); }
  .nav-item.is-open > a::after { transform: rotate(225deg) translateY(-2px); }

  /* ドロップダウン上の三角 */
  .nav-dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 10px;
    height: 10px;
    background: white;
    border-left: 1px solid var(--pink-light);
    border-top: 1px solid var(--pink-light);
    transform: translateX(-50%) rotate(45deg);
  }

  .nav-dropdown a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 18px;
    font-size: 13px;
    color: var(--navy);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
  }
  .nav-dropdown a:hover { background: var(--pink-pale); color: var(--pink-main); }
  .nav-dropdown a::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--pink-light);
    flex-shrink: 0;
    transition: background 0.15s;
  }
  .nav-dropdown a:hover::before { background: var(--pink-main); }

  .nav-cta {
    background: var(--pink-main);
    color: var(--white) !important;
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    transition: background 0.2s, transform 0.2s !important;
    margin-left: 8px;
  }
  .nav-cta:hover {
    background: var(--pink-deep) !important;
    transform: translateY(-1px);
  }

  /* ===== HERO ===== */