:root {
    --accent-dark: #223d3c;     /* ダークシアン（深緑） */
    --accent-light: #f5f0e6;    /* 淡いベージュ */
    --accent-brown: #b8946a;    /* 木のイメージのブラウン */
    --bg-soft: #f4eee5;         /* ほんのりブラウン寄り背景 */
    --text-main: #333;
    --text-white: #ffffff;
  }
  
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont,
      "Helvetica Neue", "Yu Gothic", YuGothic,
      "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
    color: var(--text-main);
    background: #ffffff;
    line-height: 1.7;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  /* =========================
      HERO（背景写真エリア）
  ========================== */
  
  .hero {
    position: relative;
    height: 220px; /* PCはメニューの下に少しだけ見える高さ */
    background-image: url("top-hero.png");
    background-size: cover;
    background-position: center 55%; /* 鍵盤あたりが見えるように */
    background-repeat: no-repeat;
    overflow: hidden;
  }
  
  /* スマホ用ヒーロー（少し低め＆SP用画像） */
  @media (max-width: 767px) {
    .hero {
      height: 170px;
      background-image: url("top-hero-sp.png");
      background-position: center center;
    }
  }
  
  /* =========================
      ヘッダー（ナビゲーション）
  ========================== */
  
  .site-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 40;
    padding: 0 6vw;
    color: var(--text-white);
    background: transparent; /* SPでは背景なしでヒーロー画像をそのまま見せる */
  }
  
  .header-inner {
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 64px;
  }
  
  .header-logo {
    display: none; /* PCのみ表示 */
    margin-right: 16px;
    flex-shrink: 0;
  }
  
  .header-logo img {
    height: 80px;
    width: auto;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.6));
  }
  
  .main-nav {
    display: flex;
    gap: 24px;
    font-family: "Noto Sans JP", sans-serif;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.18em;
  }
  
  .main-nav a {
    position: relative;
    padding: 6px 14px 8px;
    color: #fff;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.65);
    white-space: nowrap;
  }
  
  .main-nav a::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 18px;
    background: rgba(0, 0, 0, 0.75);
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: -1;
  }
  
  .main-nav a:hover::before {
    opacity: 1;
    transform: scale(1);
  }
  
  .main-nav a:hover {
    text-shadow: none;
  }
  
  /* PCだけ：ヘッダー固定＆背景色をつける＋ロゴ表示 */
  @media (min-width: 1025px) {
    body {
      padding-top: 68px; /* 固定ヘッダーぶん下げる（そのままでOK） */
    }
  
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(0, 0, 0, 0.45);  /* ★トップページと同じ薄い黒の帯 */
      backdrop-filter: blur(6px);       /* ★ぼかしもトップと揃える */
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.25);
      z-index: 40;
    }
  
    .header-inner {
      justify-content: flex-start;
    }
  
    .header-logo {
      display: block; /* ロゴは左端のまま表示 */
    }
  }  
  /* =========================
    ハンバーガーメニュー
  ========================== */
  
  .hamburger {
    position: absolute;
    right: 18px;
    top: 16px;
    width: 56px;
    height: 56px;
    border: none;
    background: rgba(34, 61, 60, 0.96);
    border-radius: 999px;
    cursor: pointer;
    z-index: 45;
    display: none; /* PCでは非表示 */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);
  }
  
  .hamburger-bar,
  .hamburger::before,
  .hamburger::after {
    position: absolute;
    left: 12px;
    right: 12px;
    height: 2px;
    border-radius: 999px;
    background: #ffffff;
    content: "";
    transition:
      transform 0.25s ease,
      top 0.25s ease,
      bottom 0.25s ease,
      opacity 0.25s ease;
  }
  
  .hamburger::before {
    top: 18px;
  }
  
  .hamburger-bar {
    top: 50%;
    transform: translateY(-50%);
  }
  
  .hamburger::after {
    bottom: 18px;
  }
  
  .hamburger-label {
    position: absolute;
    left: 50%;
    bottom: 8px;
    transform: translateX(-50%);
    font-size: 9px;
    letter-spacing: 0.24em;
    color: #ffffff;
    text-shadow: 0 0 6px rgba(0, 0, 0, 0.7);
    pointer-events: none;
  }
  
  .hamburger.is-open .hamburger-bar {
    opacity: 0;
  }
  
  .hamburger.is-open::before {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
  }
  
  .hamburger.is-open::after {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
  }
  
  @media (max-width: 767px) {
    .hamburger {
      display: block;
      position: fixed;
      top: 12px;
      right: 12px;
    }
  
    .site-header {
      padding: 0 0; /* モバイルでは余白不要（背景透明） */
    }
  
    .header-inner {
      display: none; /* SP はPCナビを非表示にしてハンバーガーのみ */
    }
  }
  
  /* =========================
      スマホ用メニュー（全画面）
  ========================== */
  
  .main-nav-mobile {
    display: none;
  }
  
  .main-nav-mobile.is-open {
    display: block;
    position: fixed;
    inset: 0;
    background: var(--accent-light);
    color: var(--accent-dark);
    z-index: 42;
    padding: 80px 12vw 40px;
    overflow-y: auto;
  }
  
  .main-nav-mobile ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  
  .main-nav-mobile a {
    display: block;
  }
  
  .mobile-nav-ja {
    font-size: 17px;
    letter-spacing: 0.12em;
    margin-bottom: 2px;
  }
  
  .mobile-nav-en {
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: lowercase;
    color: rgba(34, 61, 60, 0.55);
  }
  
  .mobile-nav-cta {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  
  .mobile-nav-cta a {
    display: block;
    text-align: center;
    padding: 12px 0;
    border-radius: 999px;
    font-size: 13px;
    letter-spacing: 0.12em;
  }
  
  .mobile-nav-cta .btn-nav-primary {
    background: var(--accent-dark);
    color: #ffffff;
    border: 1px solid var(--accent-dark);
  }
  
  .mobile-nav-cta .btn-nav-secondary {
    background: #ffffff;
    color: var(--accent-dark);
    border: 1px solid var(--accent-dark);
  }
  
  /* =========================
      スマホ用ヒーローロゴ
  ========================== */
  
  .hero-sp-logo-wrap {
    display: none;
  }
  
  @media (max-width: 767px) {
    .hero-sp-logo-wrap {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      pointer-events: none;
    }
  
    .hero-sp-logo {
      width: 55%;
      max-width: 260px;
      filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.6));
    }
  }
  
  /* =========================
      MAIN CONTENT 共通
  ========================== */
  
  main {
    background: #ffffff;
  }
  
  .section {
    padding: 80px 6vw;
  }
  
  main .section:nth-of-type(even) {
    background: var(--bg-soft);
  }
  
  .section-inner {
    max-width: 980px;
    margin: 0 auto;
  }
  
  /* セクション小見出し：茶色ラベル風 */
.section-subtitle {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: var(--accent-brown);  /* 茶色 */
  color: #ffffff;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 10px;
}
  
  .section-title {
    font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
    font-size: 24px;
    letter-spacing: 0.12em;
    margin-bottom: 24px;
    color: var(--accent-dark);
  }
  
  /* =========================
      プロフィールレイアウト
  ========================== */
  
  .profile-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    align-items: start;
  }
  
  .profile-photo {
    width: 100%;
    max-width: 220px;      /* 260 → 220 に縮小 */
    aspect-ratio: 1 / 1;   /* 正円に近づける */
    border-radius: 999px;
    overflow: hidden;
    margin: 0 auto;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
    border: 4px solid var(--accent-brown);
    background: #fff;
  }
  
  .profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center; /* 真ん中を切り出す */
  }
  
  .profile-text p {
    margin-bottom: 8px;
    font-size: 14px;
  }
  
  .profile-text strong {
    font-weight: 600;
  }
  
  .profile-text .label {
    font-weight: 600;
    color: var(--accent-dark);
    margin-top: 10px;
    margin-bottom: 4px;
    display: inline-block;
  }
  
  /* YouTube 埋め込み */
  .movie-block {
    margin-top: 40px;
  }
  
  .movie-title {
    font-size: 14px;
    margin-bottom: 8px;
  }
  
  .movie-frame {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    margin-bottom: 32px;
  }
  
  .movie-frame iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
  }
  
  .back-link {
    margin-top: 24px;
    text-align: center;
  }
  
  .back-link a {
    display: inline-block;
    padding: 10px 28px;
    border-radius: 999px;
    border: 1px solid var(--accent-dark);
    font-size: 13px;
    letter-spacing: 0.16em;
  }
  
  .back-link a:hover {
    background: var(--accent-dark);
    color: #ffffff;
  }
  
  /* =========================
      フッター
  ========================== */
  
  footer {
    padding: 40px 6vw 24px;
    background: var(--accent-dark);
    color: #ffffff;
    font-size: 12px;
    margin-top: 40px;
  }
  
  .footer-inner {
    max-width: 1080px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  
  .footer-logo-img {
    width: 160px;
  }
  
  .footer-lead {
    font-size: 14px;
    letter-spacing: 0.18em;
  }
  
  .footer-text {
    font-size: 13px;
    opacity: 0.9;
  }
  
  .footer-cta {
    display: inline-block;
    padding: 10px 32px;
    border-radius: 999px;
    background: #ffffff;
    color: #111111;
    border: 1px solid #ffffff;
    font-size: 12px;
    letter-spacing: 0.12em;
  }
  
  .footer-cta:hover {
    opacity: 0.9;
  }
  
  .footer-copy {
    margin-top: 20px;
    text-align: center;
    opacity: 0.7;
    font-size: 11px;
  }
  
  /* =========================
      スマホ用 固定CTA
  ========================== */
  
  .page-cta-mobile {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    display: none;
    gap: 12px;
    padding: 8px 16px 10px;
    justify-content: center;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
  }
  
  .page-cta-mobile a {
    flex: 1;
    text-align: center;
    padding: 10px 0;
    border-radius: 999px;
    font-size: 13px;
    letter-spacing: 0.08em;
    border: 1px solid #fff;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont,
      "Helvetica Neue", "Yu Gothic", YuGothic,
      "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  }
  
  /* 左：体験レッスン（白）／右：お問い合わせ（濃い色） */
  .page-cta-mobile a.page-cta-main {
    background: #ffffff;
    color: var(--accent-dark);
    border-color: #ffffff;
  }
  
  .page-cta-mobile a.page-cta-sub {
    background: var(--accent-dark);
    color: #ffffff;
    border-color: var(--accent-dark);
  }
  
  .page-cta-mobile.is-hidden {
    display: none !important;
  }
  
  @media (max-width: 767px) {
    body {
      padding-bottom: 72px;
    }
    .page-cta-mobile {
      display: flex;
    }
  }
  
  /* =========================
      レスポンシブ
  ========================== */
  
  @media (max-width: 1024px) {
    .main-nav {
      gap: 24px;
      font-size: 13px;
    }
  
    .profile-layout {
      grid-template-columns: 1fr;
    }
  }
  
  @media (max-width: 767px) {
    .section {
      padding: 56px 6vw;
    }
  
    .section-title {
      font-size: 22px;
    }
  
    .footer-logo-img {
      width: 140px;
    }
  }
  /* PC用固定ボタンは、デフォルトでは非表示にしておく */
.fixed-cta-pc {
  display: none;
}
  /* ==== PC版 左下固定の丸ボタン ==== */
  @media (min-width: 1025px) {
    .fixed-cta-pc {
      position: fixed;
      bottom: 24px;
      left: 24px;
      z-index: 9999;
      width: 90px;              /* 円の幅 */
      height: 90px;             /* 円の高さ */
      background: var(--accent-dark); /* 深緑 */
      color: #fff;
      border-radius: 50%;       /* ★完全な円にする */
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      font-family: "Noto Sans JP", sans-serif; /* トップと統一 */
      font-size: 14px;
      line-height: 1.4;
      text-align: center;
      box-shadow: 0 6px 15px rgba(0,0,0,0.25);
      transition: opacity 0.25s, transform 0.25s;
    }
  
    .fixed-cta-pc:hover {
      opacity: 0.9;
      transform: translateY(-2px);
    }
  }
  /* ===== School Policy 用（茶色アクセント版） ===== */
.policy-section {
  margin-top: 32px;
  padding: 24px 24px 20px;
  border-radius: 16px;
  background: var(--accent-light);       /* ベージュ系背景 */
  border-left: 6px solid var(--accent-brown); /* 左に茶色の帯 */
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

.policy-heading {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 20px;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  color: var(--accent-dark);
}

.policy-section p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 8px;
}

.policy-note {
  font-size: 13px;
  margin-top: 10px;
  color: var(--accent-brown);
}

.policy-link {
  color: var(--accent-brown);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.policy-link:hover {
  opacity: 0.85;
}
/* 背景色切り替え */
.section-white {
  background: #ffffff;
}

.section-beige {
  background: #f7f2eb;
}

/* セクション余白 */
.section {
  padding: 60px 8%;
}

/* ポリシーカード（茶色帯付き） */
.policy-card {
  background: #ffffff;
  padding: 24px 20px;
  border-left: 6px solid var(--accent-brown);
  border-radius: 12px;
  margin-bottom: 28px;
  box-shadow: 0 6px 14px rgba(0,0,0,0.06);
}

.policy-card-title {
  font-family: "Noto Serif JP";
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--accent-dark);
}

.policy-link-area {
  margin-top: 12px;
  color: var(--accent-brown);
  text-decoration: underline;
  cursor: pointer;
}

/* CTA ボタン */
.cta-center {
  text-align: center;
  margin-top: 20px;
}

.btn-main {
  display: inline-block;
  background: var(--accent-darkgreen);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  margin: 8px;
}

.btn-sub {
  display: inline-block;
  background: #ffffff;
  border: 2px solid var(--accent-darkgreen);
  color: var(--accent-darkgreen);
  padding: 12px 28px;
  border-radius: 50px;
  margin: 8px;
}
/* レッスン枠ボタン */
.lesson-slot-btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 28px;
  background: var(--accent-dark);
  color: #fff;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 0.12em;
  border: 1px solid var(--accent-dark);
  transition: background 0.25s, opacity 0.25s;
}

.lesson-slot-btn:hover {
  opacity: 0.85;
}
/* =========================
   体験レッスン用 共通スタイル
========================= */

/* 説明テキスト（リード） */
.trial-lead {
  font-size: 15px;
  margin-bottom: 16px;
}

/* 強調用 */
.trial-note-strong {
  font-weight: 600;
  color: var(--accent-dark);
}

/* カード（料金や説明用） */
.trial-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 24px 22px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.04);
  border-left: 4px solid var(--accent-brown);
  margin-bottom: 24px;
}

.trial-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--accent-dark);
  margin-bottom: 8px;
}

.trial-card-sub {
  font-size: 14px;
  color: #666;
  margin-bottom: 6px;
}

.trial-text {
  font-size: 14px;
  margin-bottom: 8px;
}

/* 箇条書き（中黒リスト） */
.trial-list {
  list-style: disc;
  padding-left: 1.4em;
  font-size: 14px;
  margin: 6px 0 4px;
}

.trial-list li + li {
  margin-top: 4px;
}

.trial-note {
  font-size: 13px;
  color: #555;
}

/* =========================
   体験レッスンの流れ（ステップ）
========================= */

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}

.flow-item {
  background: #ffffff;
  border-radius: 14px;
  padding: 18px 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  border-left: 3px solid var(--accent-brown);
  font-size: 14px;
}

.flow-step {
  font-weight: 600;
  color: var(--accent-dark);
  margin-bottom: 4px;
}

.flow-item p {
  font-size: 14px;
  margin-bottom: 4px;
}

.flow-small {
  font-size: 12px;
  color: #666;
}

.flow-arrow {
  text-align: center;
  font-size: 22px;
  color: var(--accent-brown);
  margin: 2px 0;
}

/* =========================
   ボタン系（体験レッスンページ用）
========================= */

.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  border: none;
  background: var(--accent-dark);
  color: #ffffff;
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: center;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-outline {
  display: inline-block;
  padding: 10px 26px;
  border-radius: 999px;
  border: 1px solid var(--accent-dark);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-align: center;
  background: var(--accent-dark);  /* ダークシアン */
  color: #ffffff;                  /* 白文字 */
}

.btn-outline:hover {
  opacity: 0.9;
}

.btn-center {
  text-align: center;
  margin-top: 24px;
}
/* =========================
   お問い合わせフォーム用
========================= */

.contact-form {
  margin-top: 24px;
}

.form-title {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--accent-dark);
}

.contact-field {
  margin-bottom: 14px;
}

.contact-field label,
.contact-field > span {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  max-width: 480px;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 14px;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont,
    "Helvetica Neue", "Yu Gothic", YuGothic,
    "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  box-sizing: border-box;
}

.contact-form textarea {
  min-height: 160px;
  line-height: 1.6;
}

.gender-inline {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
}

.contact-note {
  font-size: 13px;
  color: #666;
}

.btn-center {
  margin-top: 10px;
}

.btn-primary {
  display: inline-block;
  padding: 10px 32px;
  border-radius: 999px;
  background: var(--accent-dark);
  color: #fff;
  border: 1px solid var(--accent-dark);
  font-size: 14px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: opacity 0.25s, transform 0.25s;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
/* 生徒実績ページ用 ---------------------- */
.achievement-year {
  border-radius: 8px;
  background: #fff;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.achievement-year summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.achievement-year summary::-webkit-details-marker {
  display: none;
}

.achievement-year-label::before {
  content: "▶ ";
  font-size: 0.9rem;
}

.achievement-year[open] .achievement-year-label::before {
  content: "▼ ";
}

.achievement-year-body {
  margin-top: 12px;
}

.achievement-list {
  margin: 0;
  padding-left: 1.2em;
  font-size: 0.95rem;
  line-height: 1.6;
}
/* ▼ レッスン枠へ飛ぶ時のスクロール調整 */
#availability {
  scroll-margin-top: 100px; /* 必要に応じて数値調整 */
}
@media (max-width: 767px) {
  .main-nav-mobile {
    padding-top: 60px; /* 余白を少し狭く最適化 */
  }
}