:root {
      --bg: #F5F0E8;
      --card: #ffffff;
      --card2:#D4CEC3;
      --blue: #1492CC;
      --blue-light: #D6EEF8;
      --blue-dark: #0E6E99;
      --navy: #463D3A;
      --text: #2C2420;
      --text-sub: #7A6E6A;
      --green: #10b981;
      --green-light: #d1fae5;
      --red: #E8604C;
      --red-light: #FDEAE7;
      --yellow: #f59e0b;
      --yellow-light: #fef9c3;
      --purple: #8b5cf6;
      --purple-light: #f5f3ff;
      --radius: 20px;
      --radius-sm: 12px;
      --shadow: 0 2px 12px rgba(20,146,204,0.10);
      --shadow-lg: 0 8px 32px rgba(20,146,204,0.18);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: 'Noto Sans JP', sans-serif;
      background: var(--bg);
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 16px;
      background-image:
        radial-gradient(circle at 20% 20%, rgba(20,146,204,0.07) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(70,61,58,0.05) 0%, transparent 50%);
    }
    .container { width: 100%; max-width: 420px; }
    .card { background: var(--card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); border: 1px solid rgba(20,146,204,0.08); margin-bottom: 12px; }
    .btn { width: 100%; padding: 16px; border-radius: var(--radius); border: none; font-family: 'Outfit', sans-serif; font-size: 1.05rem; font-weight: 700; cursor: pointer; transition: all 0.2s; margin-bottom: 8px; }
    .btn:active { transform: scale(0.97); }
    .btn-primary { background: var(--blue); color: white; box-shadow: 0 4px 16px rgba(20,146,204,0.35); }
    .btn-primary:hover { background: var(--blue-dark); }
    .btn-secondary { background: var(--card2); color: var(--navy); }
    .btn-green { background: var(--green); color: white; box-shadow: 0 4px 16px rgba(16,185,129,0.3); }
    .btn-danger { background: #ef4444; color: white; box-shadow: 0 4px 16px rgba(239,68,68,0.3); }
    .btn-danger:hover { background: #dc2626; }
    .btn:disabled { opacity: 0.4; cursor: not-allowed; }
    .screen { display: none; }
    .screen.active { display: block; }
    .screen-title { font-family: 'Outfit', sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--navy); margin-bottom: 16px; text-align: center; }
    .setting-label { font-size: 0.75rem; font-weight: 700; color: var(--text-sub); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
    .input-text { width: 100%; border: 1.5px solid #e2e8f0; border-radius: 10px; padding: 10px 14px; font-size: 1rem; font-family: 'Noto Sans JP', sans-serif; outline: none; margin-bottom: 16px; transition: border 0.2s; }
    .input-text:focus { border-color: var(--blue); }

    /* トップ */
    .top-header { text-align: center; margin-bottom: 24px; padding-top: 8px; }
    .app-logo { font-family: 'Outfit', sans-serif; font-size: 3rem; font-weight: 900; color: var(--navy); line-height: 1; margin-bottom: 6px; letter-spacing: -0.02em; }
    .app-logo span { color: var(--blue); }
    .app-tagline { font-size: 0.95rem; color: var(--text-sub); }
    .top-crown { font-size: 3.2rem; display: block; margin-bottom: 8px; animation: float 3s ease-in-out infinite; }
    @keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
    .notice-card { background: #fffbeb; border: 1.5px solid #fcd34d; border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 16px; font-size: 0.8rem; color: #92400e; line-height: 1.6; }
    .top-sub-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 0; }
    .btn-outline { background: var(--card); border: 2px solid #e2e8f0; color: var(--navy); font-family: 'Outfit', sans-serif; font-size: 0.95rem; font-weight: 700; padding: 14px; border-radius: var(--radius); cursor: pointer; transition: all 0.2s; text-align: center; width: 100%; }
    .btn-outline:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-light); }
    .btn-outline:active { transform: scale(0.97); }

    /* ═══ 新・トップ画面（ログイン前） ═══ */

    /* 背景浮遊アルファベット */
    #topBgCanvas {
      position: fixed; top: 0; left: 0;
      width: 100%; height: 100%;
      pointer-events: none; z-index: 0;
      opacity: 0.55;
    }

    /* ヒーローセクション */
    .top-hero {
      text-align: center;
      padding: 24px 0 8px;
      position: relative;
    }
    .top-hero-logo-wrap {
      position: relative;
      display: inline-block;
      margin-bottom: 6px;
    }
    .top-hero-logo {
      font-family: 'Outfit', sans-serif;
      font-size: 3.2rem; font-weight: 900;
      color: var(--navy); line-height: 1;
      letter-spacing: -0.02em;
      position: relative; z-index: 1;
    }
    .top-hero-logo .logo-king { color: var(--blue); }
    .top-hero-logo .logo-jr { font-size: 1.8rem; font-weight: 700; }
    /* 王冠 */
    /* ロゴSVG画像 */
    .top-hero-logo-img {
      display: block;
      width: 390px;
      max-width: 90vw;
      height: auto;
      position: relative; z-index: 1;
      user-select: none;
    }
    /* ロゴ周りのキラキラ */
    .sparkle-wrap {
      position: absolute; top: -14px; left: 50%;
      transform: translateX(-50%);
      width: 420px; height: 120px;
      pointer-events: none; z-index: 2;
    }
    .sparkle {
      position: absolute;
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--blue);
      animation: sparkleAnim 2s ease-in-out infinite;
    }
    .sparkle:nth-child(1) { top:8px; left:4%;   animation-delay:0s;    background:#1492CC; width:4px;height:4px; }
    .sparkle:nth-child(2) { top:0px; left:28%;  animation-delay:0.4s;  background:#f59e0b; width:6px;height:6px; }
    .sparkle:nth-child(3) { top:4px; left:52%;  animation-delay:0.8s;  background:#1492CC; width:4px;height:4px; }
    .sparkle:nth-child(4) { top:2px; left:76%;  animation-delay:1.2s;  background:#f59e0b; width:5px;height:5px; }
    .sparkle:nth-child(5) { top:10px;left:96%;  animation-delay:0.2s;  background:#60a5fa; width:4px;height:4px; }
    .sparkle:nth-child(6) { top:82px;left:12%;  animation-delay:1.6s;  background:#f59e0b; width:4px;height:4px; }
    .sparkle:nth-child(7) { top:86px;left:84%;  animation-delay:0.6s;  background:#1492CC; width:3px;height:3px; }
    @keyframes sparkleAnim {
      0%,100% { opacity:0; transform:scale(0.5) translateY(0); }
      50% { opacity:1; transform:scale(1.2) translateY(-4px); }
    }
    .top-hero-catch {
      font-size: 1.3rem; font-weight: 800;
      color: var(--navy); line-height: 1.5;
      margin-bottom: 4px;
    }
    .top-hero-sub {
      font-size: 0.82rem; color: var(--text-sub);
      margin-bottom: 0;
    }

    /* メリットカード */
    .top-benefit-list {
      display: flex; flex-direction: column; gap: 8px;
      margin-bottom: 16px;
    }
    .top-benefit-card {
      background: var(--card);
      border: 1.5px solid #f1f5f9;
      border-radius: 16px;
      padding: 12px 14px;
      display: flex; align-items: center; gap: 12px;
      box-shadow: 0 1px 6px rgba(20,146,204,0.07);
      transition: border-color 0.18s, box-shadow 0.18s;
    }
    .top-benefit-card:hover {
      border-color: var(--blue);
      box-shadow: var(--shadow);
    }
    .top-benefit-icon-wrap {
      width: 44px; height: 44px;
      border-radius: 12px;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      font-size: 1.4rem;
    }
    .top-benefit-icon-wrap.blue  { background: var(--blue-light); }
    .top-benefit-icon-wrap.green { background: var(--green-light); }
    .top-benefit-icon-wrap.gold  { background: var(--yellow-light); }
    .top-benefit-info { flex: 1; }
    .top-benefit-title {
      font-family: 'Outfit', sans-serif;
      font-size: 0.9rem; font-weight: 800; color: var(--navy);
      margin-bottom: 2px;
    }
    .top-benefit-desc { font-size: 0.75rem; color: var(--text-sub); line-height: 1.5; }

    /* SVGアイコン */
    .benefit-svg { width: 28px; height: 28px; }

    /* ログインボタン群 */
    .top-login-section { margin-bottom: 12px; }
    .btn-google-new {
      width: 100%; padding: 16px;
      background: var(--blue);
      color: white;
      border: none; border-radius: var(--radius);
      font-family: 'Outfit', sans-serif;
      font-size: 1.05rem; font-weight: 700;
      cursor: pointer; margin-bottom: 8px;
      display: flex; align-items: center; justify-content: center; gap: 10px;
      box-shadow: 0 4px 16px rgba(20,146,204,0.38);
      transition: all 0.2s;
    }
    .btn-google-new:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(20,146,204,0.45); }
    .btn-google-new:active { transform: scale(0.97); }
    .btn-google-new img { width: 22px; height: 22px; background: white; border-radius: 50%; padding: 2px; }
    .btn-line-new {
      width: 100%; padding: 16px;
      background: #06C755;
      color: white;
      border: none; border-radius: var(--radius);
      font-family: 'Outfit', sans-serif;
      font-size: 1.05rem; font-weight: 700;
      cursor: pointer; margin-bottom: 8px;
      display: flex; align-items: center; justify-content: center; gap: 10px;
      box-shadow: 0 4px 16px rgba(6,199,85,0.38);
      transition: all 0.2s;
    }
    .btn-line-new:hover { background: #05b34c; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(6,199,85,0.45); }
    .btn-line-new:active { transform: scale(0.97); }
    .btn-guest-new {
      width: 100%; padding: 14px;
      background: var(--card);
      color: var(--navy);
      border: 2px solid #e2e8f0;
      border-radius: var(--radius);
      font-family: 'Outfit', sans-serif;
      font-size: 0.95rem; font-weight: 700;
      cursor: pointer; margin-bottom: 0;
      display: flex; align-items: center; justify-content: center; gap: 8px;
      transition: all 0.2s;
    }
    .btn-guest-new:hover { border-color: var(--navy); background: var(--bg); }
    .btn-guest-new:active { transform: scale(0.97); }
    .login-divider-new {
      text-align: center; color: var(--text-sub);
      font-size: 0.78rem; margin: 8px 0;
      position: relative;
    }
    .login-divider-new::before,.login-divider-new::after {
      content: ''; position: absolute; top: 50%;
      width: 44%; height: 1px; background: #e2e8f0;
    }
    .login-divider-new::before { left: 0; }
    .login-divider-new::after { right: 0; }
    .btn-start-new {
      width: 100%; padding: 18px 16px;
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: white;
      border: none; border-radius: var(--radius);
      font-size: 1.3rem; font-weight: 800; letter-spacing: 0.03em;
      cursor: pointer; display: block; text-align: center;
      box-shadow: 0 6px 20px rgba(217,119,6,0.45), inset 0 1px 0 rgba(255,255,255,0.25);
      transition: all 0.2s;
    }
    .btn-start-badge { display: block; font-size: 0.88rem; font-weight: 400; margin-top: 4px; opacity: 0.88; }
    .btn-start-features { display: block; font-size: 0.95rem; font-weight: 600; margin-top: 10px; line-height: 1.8; opacity: 0.92; }
    .btn-start-new:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(217,119,6,0.6); }
    .btn-start-new:active { transform: scale(0.97); }
    /* RPG区切り線 */
    .rpg-divider {
      display: flex; align-items: center; gap: 8px;
      margin: 14px 0 12px; color: var(--text-sub); font-size: 0.78rem;
    }
    .rpg-divider::before, .rpg-divider::after {
      content: ''; flex: 1; height: 1px; background: #e2e8f0;
    }
    /* 再スタートボタン */
    .btn-restart-login {
      width: 100%; padding: 13px 16px;
      background: var(--card); color: var(--navy);
      border: 2px solid #cbd5e1; border-radius: var(--radius);
      font-size: 0.95rem; font-weight: 700;
      cursor: pointer; display: block; text-align: center;
      transition: all 0.2s;
    }
    .btn-restart-login:hover { border-color: #4285f4; color: #4285f4; background: #f8faff; }
    .btn-restart-login:active { transform: scale(0.97); }
    .restart-login-note {
      font-size: 0.72rem; color: var(--text-sub);
      margin: 2px 0 0; text-align: center; line-height: 1.5;
    }
    /* 機能カルーセル */
    .benefit-carousel-wrap {
      position: relative; overflow: hidden;
      margin-bottom: 16px; touch-action: pan-y;
    }
    .benefit-carousel-track {
      display: flex;
      transition: transform 0.38s cubic-bezier(0.25,0.8,0.25,1);
      will-change: transform;
    }
    .benefit-carousel-card {
      min-width: 100%;
      background: var(--card);
      border: 1.5px solid #f1f5f9;
      border-radius: 20px;
      padding: 18px 16px;
      display: flex; align-items: flex-start; gap: 14px;
      box-shadow: 0 2px 12px rgba(20,146,204,0.08);
      box-sizing: border-box;
    }
    .benefit-carousel-icon {
      width: 52px; height: 52px; border-radius: 14px;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; font-size: 1.6rem;
    }
    .bc-blue   { background: var(--blue-light); }
    .bc-green  { background: var(--green-light); }
    .bc-purple { background: var(--purple-light); }
    .bc-gold   { background: var(--yellow-light); }
    .benefit-carousel-body { flex: 1; }
    .benefit-carousel-title {
      font-family: 'Outfit', sans-serif;
      font-size: 1rem; font-weight: 800; color: var(--navy);
      margin-bottom: 4px;
    }
    .benefit-carousel-desc { font-size: 0.78rem; color: var(--text-sub); line-height: 1.6; }
    .benefit-carousel-dots {
      display: flex; justify-content: center; gap: 6px; margin-top: 10px;
    }
    .bc-dot {
      width: 6px; height: 6px; border-radius: 99px;
      background: #d4cec3; border: none; cursor: pointer;
      transition: width 0.25s, background 0.25s; padding: 0;
    }
    .bc-dot.active { width: 20px; background: var(--blue); }
    /* ログイン済みウェルカムカード（統合版） */
    .top-welcome-card {
      display: flex; align-items: center; gap: 12px;
      background: linear-gradient(135deg, #fefce8 0%, #fff7ed 100%);
      border: 2px solid #fcd34d; border-radius: var(--radius);
      padding: 14px 16px;
    }
    .top-welcome-avatar { flex-shrink: 0; }
    .top-welcome-text { flex: 1; min-width: 0; }
    .top-welcome-name { font-size: 1.05rem; font-weight: 800; color: var(--navy); }
    .top-welcome-sub { font-size: 0.78rem; color: var(--text-sub); margin-top: 2px; }
    .top-welcome-actions { display: flex; flex-direction: column; gap: 4px; flex-shrink: 0; }
    .menu-anon-upgrade-card {
      background: #eff6ff; border: 1.5px solid #bfdbfe;
      border-radius: var(--radius-sm); padding: 12px;
    }
    .menu-anon-upgrade-desc {
      font-size: 0.8rem; color: #1e40af; line-height: 1.6;
    }
    .guest-note {
      background: #fffbeb; border: 1.5px solid #fcd34d;
      border-radius: var(--radius-sm);
      padding: 8px 12px; font-size: 0.75rem;
      color: #92400e; line-height: 1.6;
      margin-top: 8px;
    }

    /* ログイン関連 */
    .btn-google { background: #fff; color: #1a2340; border: 2px solid #e2e8f0; box-shadow: 0 2px 8px rgba(0,0,0,0.08); display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 1rem; }
    .btn-google:hover { border-color: #4285f4; background: #f8faff; }
    .btn-google img { width: 22px; height: 22px; }
    .btn-trial { background: var(--card2); color: var(--navy); border: 2px dashed #cbd5e1; }
    .btn-trial:hover { border-color: var(--blue); }
    .login-divider { text-align:center; color:var(--text-sub); font-size:0.8rem; margin:10px 0; position:relative; }
    .login-divider::before,.login-divider::after { content:''; position:absolute; top:50%; width:42%; height:1px; background:#e2e8f0; }
    .login-divider::before { left:0; } .login-divider::after { right:0; }
    .warn-box { background:#fffbeb; border:1.5px solid #fcd34d; border-radius:var(--radius-sm); padding:10px 14px; font-size:0.78rem; color:#92400e; line-height:1.7; margin-bottom:12px; }
    .info-box-blue { background:var(--blue-light); border:1.5px solid var(--blue); border-radius:var(--radius-sm); padding:10px 14px; font-size:0.78rem; color:var(--blue-dark); line-height:1.7; margin-bottom:12px; }
    /* ニックネーム設定画面 */
    .nickname-screen { text-align:center; }
    .nickname-icon { font-size:3rem; margin-bottom:8px; }
    .nickname-checking { font-size:0.8rem; color:var(--text-sub); margin-top:4px; min-height:20px; }
    .nickname-ok { color:var(--green); }
    .nickname-ng { color:var(--red); }
    /* ユーザーバッジ（トップ） */
    .user-login-badge { display:flex; align-items:center; gap:10px; background:var(--blue-light); border-radius:var(--radius-sm); padding:10px 14px; margin-bottom:12px; }
    .user-login-photo { width:36px; height:36px; border-radius:50%; object-fit:cover; }
    .user-login-photo-placeholder { width:36px; height:36px; border-radius:50%; background:var(--blue); display:flex; align-items:center; justify-content:center; color:white; font-weight:700; font-size:1rem; }
    .user-login-info { flex:1; }
    .user-login-name { font-family:'Outfit',sans-serif; font-weight:700; color:var(--navy); font-size:0.95rem; }
    .user-login-sub { font-size:0.72rem; color:var(--text-sub); }
    .btn-logout-small { background:none; border:1.5px solid #e2e8f0; border-radius:8px; padding:4px 10px; font-size:0.72rem; color:var(--text-sub); cursor:pointer; font-family:'Outfit',sans-serif; font-weight:600; }
    .btn-logout-small:hover { border-color:var(--red); color:var(--red); }
    /* 説明画面 */
    .help-block { background: var(--card); border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 10px; box-shadow: var(--shadow); border-left: 4px solid var(--blue); }
    .help-block.green { border-left-color: var(--green); }
    .help-block.yellow { border-left-color: var(--yellow); }
    .help-block.purple { border-left-color: var(--purple); }
    .help-block.red { border-left-color: var(--red); }
    .help-block-title { font-family: 'Outfit', sans-serif; font-size: 0.95rem; font-weight: 800; color: var(--navy); margin-bottom: 8px; }
    .help-list { list-style: none; padding: 0; }
    .help-list li { font-size: 0.85rem; color: var(--text); line-height: 1.9; padding-left: 1.2em; position: relative; }
    .help-list li::before { content: '→'; position: absolute; left: 0; font-weight: 700; color: var(--blue); }
    .help-block.green .help-list li::before { color: var(--green); }
    .help-block.yellow .help-list li::before { color: var(--yellow); }
    .help-block.purple .help-list li::before { color: var(--purple); }
    .help-block.red .help-list li::before { color: var(--red); }
    .score-formula { background: var(--navy); color: white; border-radius: var(--radius-sm); padding: 10px 14px; font-family: 'Outfit', sans-serif; font-size: 0.88rem; font-weight: 700; text-align: center; margin-top: 10px; line-height: 1.7; }
    .score-formula span { color: #60a5fa; }

    /* ═══ ホーム画面 ═══ */

    /* ヘッダー行 */
    .home-topbar { display:flex; justify-content:space-between; align-items:center; margin-bottom:18px; }
    .home-topbar-logo { height:54px; width:auto; display:block; }
    .home-menu-trigger { display:flex; align-items:center; gap:6px; background:var(--card); border:1.5px solid #e2e8f0; border-radius:99px; padding:8px 16px; font-family:'Outfit',sans-serif; font-size:0.82rem; font-weight:700; color:var(--navy); cursor:pointer; transition:all 0.18s; box-shadow:var(--shadow); }
    .home-menu-trigger:hover { border-color:var(--blue); color:var(--blue); background:var(--blue-light); }

    /* ウェルカムテキスト */
    .home-welcome { font-family:'Outfit',sans-serif; font-size:1rem; font-weight:700; color:var(--text-sub); margin-bottom:14px; }

    /* ─── ステータスカード（メニューモーダルの grade-level-display と統一） ─── */
    .level-card {
      background: var(--navy);
      border-radius: 20px;
      padding: 18px 20px;
      margin-bottom: 0;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }
    .level-card::before {
      content: '';
      position: absolute;
      top: -45px; right: -45px;
      width: 160px; height: 160px;
      border-radius: 50%;
      background: rgba(255,255,255,0.06);
      pointer-events: none;
    }
    /* 上段：アイコン ＋ レベル＋称号 ＋ マスター率＋学年 */
    .level-top { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:12px; gap:10px; }
    .level-top-left { display:flex; align-items:flex-start; gap:10px; flex:1; min-width:0; }
    /* レベルカード アバター */
    .lc-avatar-wrap { width:48px; height:48px; border-radius:50%; flex-shrink:0; overflow:hidden; border:2.5px solid rgba(255,255,255,0.35); }
    .lc-avatar-img { width:100%; height:100%; object-fit:cover; display:block; }
    .lc-avatar-placeholder { width:100%; height:100%; display:flex; align-items:center; justify-content:center; background:rgba(255,255,255,0.18); color:white; font-family:'Outfit',sans-serif; font-weight:800; font-size:1.2rem; }
    /* アイコン右：レベル行 + 称号ブロック */
    .lc-level-block { display:flex; flex-direction:column; gap:3px; flex:1; min-width:0; justify-content:center; }
    .lc-lv-row { display:flex; align-items:baseline; gap:4px; }
    /* 右カラム：マスター率 + 学年 */
    .lc-right-col { display:flex; flex-direction:column; align-items:flex-end; gap:3px; flex-shrink:0; }
    .lc-grade-sub { font-family:'Outfit',sans-serif; font-size:0.62rem; font-weight:700; color:rgba(255,255,255,0.55); letter-spacing:0.02em; text-align:right; }
    /* LEVELバッジ（メニューモーダルの level-display-badge と同スタイル） */
    .level-badge-wrap {
      background: rgba(255,255,255,0.12);
      border-radius: 10px;
      padding: 5px 10px;
      text-align: center;
      flex-shrink: 0;
    }
    .level-badge-lv-label {
      font-family:'Outfit',sans-serif; font-size:0.55rem; font-weight:700;
      color:rgba(255,255,255,0.5); text-transform:uppercase; letter-spacing:0.1em; display:block;
    }
    .level-badge { font-family:'Outfit',sans-serif; font-size:1.4rem; font-weight:900; color:#60a5fa; line-height:1; }
    /* 右：マスター率 */
    .level-master-rate { font-family:'Outfit',sans-serif; font-size:0.8rem; font-weight:700; color:#60a5fa; }

    /* 称号行（lc-level-block 内に移動したためマージン不要） */
    .level-title { font-size:0.85rem; color:rgba(255,255,255,0.75); font-weight:600; margin:0; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }

    /* プログレスバー（メニューモーダルと同スタイル） */
    .level-bar-bg { background:rgba(255,255,255,0.12); border-radius:99px; height:6px; overflow:hidden; margin-bottom:6px; }
    .level-bar { height:100%; border-radius:99px; background:linear-gradient(90deg,#60a5fa,#a78bfa); transition:width 0.8s ease; }
    .level-bar-label { font-size:0.7rem; color:rgba(255,255,255,0.4); text-align:right; }
    .lc-bar-footer { display:flex; justify-content:space-between; align-items:center; margin-top:6px; }

    /* ─── プランカード（homeScreen版）─── */
    /* plan-card / plan-info / plan-name / plan-desc / plan-upgrade-btn はメニューモーダルと共通クラスを使用 */
    .home-plan-section { margin-bottom:12px; }

    /* ─── 学習メニューリスト（menu-item と共通スタイルで再構築） ─── */
    .home-menu-grid { display:grid; grid-template-columns:1fr; gap:8px; margin-bottom:12px; }

    /* menu-item の拡張版としてアイコン列を持つカード */
    .home-menu-card {
      display:flex; align-items:center; gap:14px;
      background:var(--card);
      border-radius:16px;
      padding:14px 16px;
      box-shadow: 0 1px 6px rgba(20,146,204,0.08);
      border:1.5px solid #f1f5f9;
      cursor:pointer;
      transition:all 0.18s;
      text-decoration:none;
    }
    .home-menu-card:hover { border-color:var(--blue); background:var(--blue-light); transform:translateY(-1px); box-shadow:var(--shadow-lg); }
    .home-menu-card:active { transform:scale(0.98); }
    .home-menu-card.disabled { opacity:0.5; cursor:default; pointer-events:none; }

    .home-menu-icon {
      font-size:1.5rem; width:44px; height:44px;
      background:var(--bg); border-radius:12px;
      display:flex; align-items:center; justify-content:center;
      flex-shrink:0;
    }
    .home-menu-info { flex:1; }
    .home-menu-title {
      font-family:'Outfit',sans-serif; font-size:0.95rem; font-weight:800;
      color:var(--navy); display:flex; align-items:center; gap:6px; margin-bottom:2px;
    }
    .home-menu-sub { font-size:0.75rem; color:var(--text-sub); line-height:1.5; }
    .home-menu-arrow { color:var(--text-sub); font-size:1rem; flex-shrink:0; }

    /* バッジ（free / paid）*/
    .home-menu-badge { font-size:0.62rem; font-weight:700; padding:2px 8px; border-radius:99px; position:relative; overflow:hidden; }
    .badge-free { background:var(--green-light); color:var(--green); }


    /* ─── homeScreen ヒーローエリア ─── */
    /* 背景キャンバス（homeScreen専用・topScreenとは別管理） */
    #homeBgCanvas {
      position: fixed; top: 0; left: 0;
      width: 100%; height: 100%;
      pointer-events: none; z-index: 0;
      opacity: 0.55;
    }

    /* ヒーローラッパー（トップバー〜ウェルカム〜レベルカード） */
    .home-hero-wrap {
      position: relative;
      overflow: hidden;
      border-radius: 20px;
      margin-bottom: 12px;
      padding: 0;
      background: transparent;
    }
    /* ヒーロー内コンテンツは z-index:1 で前面に */
    .home-hero-wrap > * { position: relative; z-index: 1; }

    /* トップバー・ウェルカムを hero-wrap 内に入れたので余白調整 */
    .home-hero-wrap .home-topbar    { margin-bottom: 10px; padding-top: 4px; }
    .home-hero-wrap .home-welcome   { margin-bottom: 10px; }

    /* angle-radius 統一：全カード20px */
    .home-menu-card { border-radius: 20px; }
    .home-sub-btn   { border-radius: 20px; }
    .home-plan-section .plan-card { border-radius: 20px; }

    /* ─── 学習スタートボタン ─── */
    .btn-quick-start {
      width: 100%;
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 20px;
      background: linear-gradient(135deg, #1492CC 0%, #0a5a80 100%);
      border: none;
      border-radius: 20px;
      cursor: pointer;
      box-shadow: 0 4px 20px rgba(20,146,204,0.45);
      margin-bottom: 10px;
      transition: transform 0.15s, box-shadow 0.15s;
      animation: quickStartPulse 2.6s ease-in-out infinite;
    }
    .btn-quick-start:active { transform: scale(0.97); animation: none; }
    .btn-quick-start-icon { font-size: 2.2rem; flex-shrink: 0; line-height: 1; }
    .btn-quick-start-body { text-align: left; }
    .btn-quick-start-main {
      font-family: 'Outfit', sans-serif;
      font-size: 1.25rem;
      font-weight: 900;
      color: white;
      line-height: 1.2;
    }
    .btn-quick-start-sub {
      font-size: 0.72rem;
      color: rgba(255,255,255,0.82);
      margin-top: 3px;
    }
    @keyframes quickStartPulse {
      0%,100% { box-shadow: 0 4px 20px rgba(20,146,204,0.45); }
      50%      { box-shadow: 0 6px 30px rgba(20,146,204,0.72); }
    }

    /* ─── 結果画面：ランキングを見るボタン ─── */
    .btn-view-ranking {
      width: 100%;
      background: none;
      border: 1.5px solid var(--blue, #1492CC);
      color: var(--blue, #1492CC);
      border-radius: 99px;
      padding: 10px 20px;
      font-size: 0.9rem;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.15s, color 0.15s;
    }
    .btn-view-ranking:active { background: var(--blue, #1492CC); color: #fff; }

    /* ─── その他のモードラベル ─── */
    .home-mode-label {
      font-size: 0.68rem;
      font-weight: 700;
      color: var(--text-sub);
      letter-spacing: 0.1em;
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    /* ─── 2×2 モードグリッド ─── */
    .home-mode-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin-bottom: 12px;
    }
    .home-mode-card {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 5px;
      padding: 12px 8px;
      background: var(--card);
      border-radius: 16px;
      border: 1.5px solid #f1f5f9;
      box-shadow: 0 1px 6px rgba(20,146,204,0.07);
      cursor: pointer;
      transition: all 0.18s;
      text-align: center;
      position: relative;
    }
    .home-mode-card:hover { border-color: var(--blue); background: var(--blue-light); transform: translateY(-1px); }
    .home-mode-card:active { transform: scale(0.97); }
    .home-mode-card.disabled { opacity: 0.5; cursor: default; pointer-events: none; }
    .home-mode-icon { font-size: 1.55rem; line-height: 1; }
    .home-mode-title {
      font-family: 'Outfit', sans-serif;
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--navy);
      line-height: 1.35;
      white-space: nowrap;
    }
    .pro-badge-card {
      position: absolute;
      top: 4px;
      right: 4px;
      font-size: 0.48rem;
      font-weight: 800;
      background: linear-gradient(135deg, #16a34a, #4ade80);
      color: white;
      border-radius: 4px;
      padding: 1px 4px;
      letter-spacing: 0.03em;
      line-height: 1.5;
      font-family: 'Outfit', sans-serif;
      white-space: nowrap;
    }
    .pro-badge {
      display: inline-block;
      font-size: 0.5rem;
      font-weight: 800;
      background: linear-gradient(135deg, #16a34a, #4ade80);
      color: white;
      border-radius: 4px;
      padding: 1px 5px;
      letter-spacing: 0.03em;
      vertical-align: middle;
      white-space: nowrap;
      line-height: 1.5;
      font-family: 'Outfit', sans-serif;
    }

    /* ─── フラッシュカード画面 ─── */
    .fc-topbar {
      display: flex; align-items: center; justify-content: space-between;
      margin-bottom: 12px; padding-top: 4px;
    }
    .fc-back-btn {
      background: none; border: none;
      font-family: 'Outfit', sans-serif; font-size: 1rem; font-weight: 700;
      color: var(--navy); cursor: pointer; padding: 6px 4px;
    }
    .fc-title-label {
      font-family: 'Outfit', sans-serif; font-size: 1rem; font-weight: 800; color: var(--navy);
    }
    .fc-progress-wrap {
      display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
    }
    .fc-progress-text { font-size: 0.78rem; font-weight: 700; color: var(--text-sub); flex-shrink: 0; }
    .fc-progress-bar-bg { flex: 1; height: 6px; background: #DDD8CE; border-radius: 99px; overflow: hidden; }
    .fc-progress-bar { height: 100%; background: var(--blue); border-radius: 99px; transition: width 0.35s; }

    /* カード 3D フリップ */
    .fc-card-area { cursor: pointer; margin-bottom: 14px; user-select: none; }
    .fc-card-wrap { perspective: 1000px; }
    .fc-card {
      position: relative; height: 280px;
      transform-style: preserve-3d; transition: transform 0.45s ease;
    }
    .fc-card.flipped { transform: rotateY(180deg); }
    .fc-face {
      position: absolute; inset: 0;
      backface-visibility: hidden; -webkit-backface-visibility: hidden;
      border-radius: 20px;
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      padding: 20px; box-shadow: 0 6px 28px rgba(44,36,32,0.28);
    }
    /* 表面：トップのヒーローカードと同じウォームダークブラウン */
    .fc-front { background: #2C2420; border: 1.5px solid #3A302C; }
    /* 裏面：同系のやや明るいウォームダーク */
    .fc-back {
      background: #332B28; border: 1.5px solid #3A302C; transform: rotateY(180deg);
      justify-content: flex-start; padding-top: 18px; overflow-y: auto;
    }
    .fc-sub-label {
      font-size: 0.7rem; font-weight: 700; color: #8A7E7A;
      letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px;
    }
    .fc-jp-big { font-size: 2rem; font-weight: 700; color: #F0EBE3; text-align: center; margin-bottom: 18px; }
    .fc-flip-hint { font-size: 0.75rem; color: #7A6E6A; }
    .fc-jp-small { font-size: 0.88rem; color: #9A8E8A; margin-bottom: 6px; }
    .fc-en-big {
      font-family: 'Outfit', sans-serif; font-size: 1.45rem; font-weight: 900;
      color: var(--blue); text-align: center; margin-bottom: 4px; letter-spacing: 0.01em;
      line-height: 1.4;
    }
    .fc-blank-text { font-size: 0.8rem; color: #8A7E7A; margin-bottom: 10px; }
    .fc-speak-btn {
      background: rgba(255,255,255,0.08); border: 1px solid rgba(20,146,204,0.4); border-radius: 99px;
      padding: 6px 14px; font-size: 0.82rem; font-weight: 700; color: var(--blue);
      cursor: pointer; transition: all 0.15s;
    }
    .fc-speak-btn:active { background: rgba(20,146,204,0.15); }
    .fc-explanation {
      font-size: 0.8rem; color: #AEA8A4; line-height: 1.65;
      margin-top: 10px; text-align: center; padding: 0 4px;
      border-top: 1px solid rgba(255,255,255,0.1); padding-top: 10px; width: 100%;
    }
    .fc-explanation:empty { display: none; }

    /* 評価ボタン：主アクション(わかった)を2倍幅で強調 */
    .fc-rating { display: grid; grid-template-columns: 1fr 2fr; gap: 8px; margin-bottom: 12px; }
    .fc-rating button {
      border: 1.5px solid transparent; border-radius: 14px;
      font-family: 'Noto Sans JP', sans-serif; font-weight: 700;
      cursor: pointer; transition: all 0.15s; line-height: 1.6;
    }
    .fc-rating button:active { transform: scale(0.96); }
    .fc-btn-ng { background: #fff; color: var(--red); border-color: #F0CFC9; font-size: 0.78rem; padding: 12px 4px; }
    .fc-btn-ok { background: #E6F5EE; color: var(--green); border-color: #BFE5D0; font-size: 0.9rem; padding: 16px 4px; }

    /* 完了画面 */
    .fc-complete { text-align: center; padding: 32px 0; }
    .fc-complete-emoji { font-size: 3.5rem; margin-bottom: 12px; }
    .fc-complete-title {
      font-family: 'Outfit', sans-serif; font-size: 1.4rem; font-weight: 900;
      color: var(--navy); margin-bottom: 8px;
    }
    .fc-complete-sub { font-size: 0.88rem; color: var(--text-sub); margin-bottom: 12px; line-height: 1.7; }
    .fc-wrong-list {
      text-align: left; background: #FFF5F5; border: 1.5px solid #F0CFC9;
      border-radius: 12px; padding: 12px 14px; margin-bottom: 4px;
    }
    .fc-wrong-list-title { font-size: 0.78rem; font-weight: 700; color: var(--red); margin-bottom: 8px; }
    .fc-wrong-item {
      display: flex; justify-content: space-between; align-items: baseline;
      padding: 5px 0; border-bottom: 1px solid #F5DADA; gap: 8px;
    }
    .fc-wrong-item:last-child { border-bottom: none; }
    .fc-wrong-jp { font-size: 0.82rem; color: var(--navy); flex-shrink: 0; }
    .fc-wrong-en { font-family: 'Outfit', sans-serif; font-size: 0.88rem; font-weight: 700; color: var(--blue); text-align: right; }

    /* ─── ボトムボタン行（btn-outline の統一） ─── */
    .home-sub-row { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-bottom:0; }
    .home-sub-btn {
      display:flex; align-items:center; justify-content:center; gap:6px;
      background:var(--card);
      border:1.5px solid #e2e8f0;
      border-radius:14px;
      padding:14px 10px;
      font-family:'Outfit',sans-serif; font-size:0.88rem; font-weight:700;
      color:var(--navy); cursor:pointer; transition:all 0.18s;
      box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    }
    .home-sub-btn:hover { border-color:var(--blue); color:var(--blue); background:var(--blue-light); }
    .home-sub-btn:active { transform:scale(0.97); }

    /* 設定 */
    .setting-section { margin-bottom: 16px; }
    .option-grid { display: flex; gap: 8px; flex-wrap: wrap; }
    .option-btn { padding: 8px 16px; border-radius: 10px; border: 2px solid #e2e8f0; background: var(--card); font-family: 'Outfit', sans-serif; font-size: 0.9rem; font-weight: 600; color: var(--text-sub); cursor: pointer; transition: all 0.15s; }
    .option-btn:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-light); }
    .option-btn.selected { border-color: var(--blue); background: var(--blue-light); color: var(--blue); box-shadow: 0 2px 8px rgba(20,146,204,0.18); }
    .option-btn:active { transform: scale(0.96); }
    .option-btn:disabled { opacity: 0.35; cursor: not-allowed; }
    .option-btn:disabled:hover { border-color: #e2e8f0; color: var(--text-sub); background: var(--card); }
    .toggle-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid #f1f5f9; }
    .toggle-label { font-size: 0.95rem; color: var(--navy); font-weight: 500; }
    .toggle { width: 44px; height: 24px; background: #e2e8f0; border-radius: 99px; position: relative; cursor: pointer; transition: background 0.2s; border: none; flex-shrink: 0; }
    .toggle.on { background: var(--blue); }
    .toggle::after { content: ''; position: absolute; width: 18px; height: 18px; background: white; border-radius: 50%; top: 3px; left: 3px; transition: left 0.2s; box-shadow: 0 1px 4px rgba(0,0,0,0.2); }
    .toggle.on::after { left: 23px; }
    .toggle:disabled { opacity: 0.45; cursor: not-allowed; }

    /* ─── 設定画面モダンデザイン ─── */
    .setting-page-header {
      display: flex;
      align-items: center;
      margin-bottom: 20px;
      padding-top: 4px;
    }
    .setting-header-title-wrap { flex: 1; display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
    .setting-header-logo-img { height: 48px; width: auto; display: block; }
    .setting-header-sub {
      font-size: 0.92rem; font-weight: 700;
      color: var(--blue-dark);
      background: none;
      border-left: 3px solid var(--blue);
      border-radius: 0;
      padding: 2px 0 2px 8px;
    }
    .setting-card-modern {
      background: var(--card);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      border: 1px solid rgba(20,146,204,0.08);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .setting-group {
      padding: 16px 18px;
      margin-bottom: 0;
    }
    .setting-group-label {
      font-size: 0.72rem;
      font-weight: 800;
      color: var(--text-sub);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 10px;
    }
    .setting-divider {
      height: 1px;
      background: rgba(226,232,240,0.8);
      margin: 0 18px;
    }
    .btn-start-modern {
      width: 100%;
      padding: 16px;
      border-radius: 14px;
      border: none;
      font-family: 'Outfit', sans-serif;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      transition: all 0.2s;
      background: #1a5f8a;
      color: white;
      box-shadow: 0 6px 20px rgba(26,95,138,0.40), 0 2px 6px rgba(0,0,0,0.12);
      letter-spacing: 0.03em;
    }
    .btn-start-modern:hover { background: #164e74; box-shadow: 0 8px 24px rgba(26,95,138,0.45); }
    .btn-start-modern:active { transform: scale(0.97); }
    .btn-start-modern:disabled { background: #b0bec5; box-shadow: none; cursor: not-allowed; opacity: 0.6; pointer-events: none; -webkit-user-select: none; user-select: none; }
    #tsStartHint { display: none; }
    #tsStartBtn:disabled + #tsStartHint { display: block; }
    .btn-back-modern {
      width: 100%;
      padding: 16px;
      border-radius: 14px;
      border: 1.5px solid #e2e8f0;
      font-family: 'Outfit', sans-serif;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      transition: all 0.2s;
      background: var(--card);
      color: var(--navy);
      box-shadow: 0 6px 20px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.06);
      letter-spacing: 0.03em;
      margin-top: 8px;
    }
    .btn-back-modern:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-light); }
    .btn-back-modern:active { transform: scale(0.97); }

    /* クイズ */
    .quiz-hud { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
    .hud-card { background: var(--card); border-radius: var(--radius-sm); padding: 10px 14px; box-shadow: var(--shadow); }
    .hud-label { font-size: 0.7rem; color: var(--text-sub); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 2px; }
    .hud-value { font-family: 'Outfit', sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--navy); }
    .hud-value.blue { color: var(--blue); }
    .timer-card { background: var(--card); border-radius: var(--radius-sm); padding: 10px 14px; box-shadow: var(--shadow); margin-bottom: 10px; }
    .timer-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
    .timer-label { font-size: 0.72rem; color: var(--text-sub); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
    .timer-num { font-family: 'Outfit', sans-serif; font-size: 0.95rem; font-weight: 700; color: var(--navy); }
    .timer-bar-bg { background: var(--bg); border-radius: 99px; height: 7px; overflow: hidden; }
    .timer-bar { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--blue), #60a5fa); transition: width 1s linear, background 0.5s; }
    .timer-bar.danger { background: linear-gradient(90deg, var(--red), #f87171); }
    .question-card { background: var(--card); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 10px; }
    .question-tag { display: inline-block; background: var(--blue-light); color: var(--blue); font-size: 0.68rem; font-weight: 700; padding: 3px 10px; border-radius: 99px; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.08em; }
    .question-no { font-size: 0.68rem; font-family: 'Outfit', sans-serif; font-weight: 700; color: var(--text-sub); margin-bottom: 6px; opacity: 0.7; }
    .jp-text { font-size: 1.2rem; font-weight: 700; color: var(--navy); margin-bottom: 10px; line-height: 1.5; }
    .blank-text { font-size: 1rem; color: var(--text-sub); background: var(--bg); border-radius: var(--radius-sm); padding: 10px 14px; line-height: 2.4; word-break: break-all; }
    .blank-badge { display: inline-block; background: var(--blue); color: white; font-family: "Outfit", sans-serif; font-weight: 600; font-size: 0.85rem; padding: 4px 16px; border-radius: 99px; margin: 0 4px; vertical-align: middle; letter-spacing: 0.1em; box-shadow: 0 3px 0 var(--blue-dark); border: none; line-height: 1.6; text-transform: uppercase; }
    .input-card { background: var(--card); border-radius: var(--radius-sm); padding: 12px 14px; box-shadow: var(--shadow); border: 1.5px solid rgba(20,146,204,0.12); transition: border 0.2s; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
    .input-card:focus-within { border-color: var(--blue); }
    .input-card.correct { border-color: var(--green); background: var(--green-light); }
    .input-card.wrong { border-color: var(--red); background: var(--red-light); }
    .input-inner { flex: 1; }
    .input-label { font-size: 0.68rem; font-weight: 700; color: var(--text-sub); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 3px; }
    .input-field { width: 100%; border: none; background: transparent; font-family: 'Outfit', sans-serif; font-size: 1.05rem; font-weight: 600; color: var(--navy); outline: none; }
    .input-field::placeholder { color: #cbd5e1; font-weight: 400; }
    .hint-btn { background: var(--blue-light); border: none; border-radius: 8px; padding: 6px 10px; font-size: 0.75rem; font-weight: 700; color: var(--blue); cursor: pointer; white-space: nowrap; transition: all 0.15s; flex-shrink: 0; }
    .hint-btn:hover { background: var(--blue); color: white; }
    .hint-btn:disabled { opacity: 0.3; cursor: not-allowed; background: var(--blue-light); color: var(--blue); }
    .hint-count { font-size: 0.65rem; display: block; text-align: center; margin-top: 2px; }
    .feedback-card { border-radius: var(--radius-sm); padding: 12px 14px; margin-bottom: 8px; display: none; animation: fadeIn 0.3s ease; }
    .feedback-card.correct { background: var(--green-light); border: 1.5px solid var(--green); }
    .feedback-card.wrong { background: var(--red-light); border: 1.5px solid var(--red); }
    .feedback-emoji { font-size: 1.6rem; display: block; margin-bottom: 3px; }
    .feedback-text { font-family: 'Outfit', sans-serif; font-size: 1.1rem; font-weight: 800; color: var(--navy); }
    .feedback-ans { font-size: 0.85rem; color: var(--text-sub); margin-top: 3px; }
    .tts-btn { display:block;margin:10px auto 0;padding:7px 20px;background:#f0f9ff;border:2px solid var(--blue);color:var(--blue);border-radius:20px;font-size:0.88rem;font-weight:700;cursor:pointer;font-family:'Outfit',sans-serif;transition:background 0.15s,color 0.15s; }
    .tts-btn:active { background:var(--blue);color:white; }
    .tts-btn:disabled { background:var(--blue);color:white;opacity:0.75;cursor:default; }
    .tts-note { font-size:0.72rem;color:var(--text-sub);text-align:center;margin-top:5px;opacity:0.75; }
    .graduated-badge { display: none; background: var(--purple-light); border: 1.5px solid var(--purple); border-radius: var(--radius-sm); padding: 7px 12px; font-size: 0.85rem; font-weight: 600; color: var(--purple); margin-bottom: 8px; text-align: center; }
    @keyframes fadeIn { from{opacity:0;transform:translateY(4px)} to{opacity:1;transform:translateY(0)} }

    /* 結果 */
    .result-header { background: var(--navy); border-radius: var(--radius); padding: 24px; text-align: center; margin-bottom: 12px; box-shadow: var(--shadow-lg); }
    .result-emoji { font-size: 2.8rem; margin-bottom: 6px; }
    .result-msg { font-family: 'Outfit', sans-serif; font-size: 1.2rem; font-weight: 700; color: white; margin-bottom: 12px; }
    .result-score { font-family: 'Outfit', sans-serif; font-size: 3.5rem; font-weight: 800; color: #60a5fa; line-height: 1; }
    .result-score-label { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
    .result-stats { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-bottom: 12px; }
    .stat-card { background: var(--card); border-radius: var(--radius-sm); padding: 12px 8px; text-align: center; box-shadow: var(--shadow); }
    .stat-value { font-family: 'Outfit', sans-serif; font-size: 1.4rem; font-weight: 800; color: var(--navy); }
    .stat-label { font-size: 0.68rem; color: var(--text-sub); margin-top: 2px; }
    /* SNS共有ボタン */
    .share-btn { display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:15px 20px;margin-bottom:12px;border:none;border-radius:var(--radius);background:linear-gradient(135deg,#f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);color:white;font-family:'Outfit',sans-serif;font-size:1.05rem;font-weight:800;cursor:pointer;box-shadow:0 4px 20px rgba(220,39,67,0.45);transition:transform 0.15s,box-shadow 0.15s;letter-spacing:0.02em; }
    .share-btn:active { transform:scale(0.97);box-shadow:0 2px 10px rgba(220,39,67,0.35); }
    .share-btn-icon { font-size:1.3rem; }
    .share-btn-text { flex:1;text-align:center; }
    .review-section { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-bottom: 12px; }
    .review-title { font-family: 'Outfit', sans-serif; font-size: 0.82rem; font-weight: 700; color: var(--text-sub); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px; }
    .review-item { border-left: 3px solid var(--red); padding: 8px 10px; margin-bottom: 6px; background: var(--red-light); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
    .review-jp { font-size: 0.9rem; font-weight: 700; color: var(--navy); margin-bottom: 2px; }
    .review-ans { font-family: 'Outfit', sans-serif; font-size: 0.85rem; font-weight: 700; color: var(--green); }
    .review-all-correct { text-align: center; padding: 16px; color: var(--green); font-weight: 700; }

    /* プラン購入モーダル */
    #planModal { position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.75);z-index:2100;display:none;align-items:center;justify-content:center;padding:16px; }
    #planModal.show { display:flex; }
    .plan-modal-box { max-width:400px; }
    .plan-modal-desc { text-align:center; color:var(--text-sub); font-size:0.88rem; margin:0 0 20px; }
    .plan-option-cards { display:flex; gap:12px; }
    .plan-option-card { flex:1; background:var(--bg); border:1.5px solid #e2e8f0; border-radius:16px; padding:16px 12px; display:flex; flex-direction:column; align-items:center; gap:6px; text-align:center; position:relative; }
    .plan-option-recommend { background:var(--blue); color:white; font-size:0.68rem; font-weight:800; border-radius:99px; padding:4px 10px; min-height:36px; line-height:1.3; display:flex; align-items:center; justify-content:center; text-align:center; }
    .plan-option-icon { font-size:2rem; }
    .plan-option-name { font-family:'Outfit',sans-serif; font-size:0.82rem; font-weight:800; color:var(--navy); }
    .plan-option-price { font-family:'Outfit',sans-serif; font-size:1.4rem; font-weight:900; color:var(--blue); }
    .plan-option-unit { font-size:0.75rem; font-weight:600; }
    .plan-option-desc { font-size:0.72rem; color:var(--text-sub); flex-grow:1; display:flex; align-items:center; justify-content:center; text-align:center; }
    .plan-option-btn { width:100%; margin-top:8px; font-size:0.82rem; padding:10px 8px; }
    .plan-modal-cancel { width:100%; margin-top:12px; background:transparent; border:1.5px solid #e2e8f0; color:var(--text-sub); border-radius:99px; padding:10px; font-size:0.85rem; cursor:pointer; }
    .plan-modal-cancel:hover { background:var(--bg); }
    /* プラン管理モーダル */
    #planManageModal { position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.75);z-index:2100;display:none;align-items:center;justify-content:center;padding:16px; }
    #planManageModal.show { display:flex; }
    .plan-manage-current { display:flex; align-items:center; justify-content:space-between; background:var(--bg); border:1.5px solid #e2e8f0; border-radius:12px; padding:10px 14px; margin-bottom:16px; }
    .plan-manage-label { font-size:0.75rem; color:var(--text-sub); font-weight:600; }
    .plan-manage-badge { font-size:0.82rem; font-weight:800; color:var(--navy); }
    .plan-manage-upgrade { background:linear-gradient(135deg,#1a2340 0%,#0E6E99 100%); border-radius:16px; padding:16px; margin-bottom:12px; }
    .plan-manage-upgrade-header { display:flex; align-items:center; gap:12px; margin-bottom:8px; }
    .plan-manage-upgrade-icon { font-size:2rem; flex-shrink:0; }
    .plan-manage-upgrade-name { font-family:'Outfit',sans-serif; font-size:0.9rem; font-weight:800; color:white; }
    .plan-manage-upgrade-price { font-family:'Outfit',sans-serif; font-size:0.78rem; font-weight:600; color:rgba(255,255,255,0.75); }
    .plan-manage-upgrade-note { font-size:0.72rem; color:rgba(255,255,255,0.65); line-height:1.5; margin:0 0 12px; }
    .plan-manage-btn { width:100%; font-size:0.85rem; padding:11px; }
    .plan-manage-portal-btn { width:100%; background:transparent; border:1.5px solid #e2e8f0; color:var(--navy); border-radius:12px; padding:12px; font-size:0.85rem; font-weight:700; cursor:pointer; margin-bottom:4px; }
    .plan-manage-portal-btn:hover { background:var(--bg); }
    .plan-manage-portal-note { text-align:center; font-size:0.7rem; color:var(--text-sub); margin:0 0 12px; }
    /* 退会確認モーダル */
    #withdrawalModal { position: fixed; top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);z-index:2100;display:none;align-items:center;justify-content:center;padding:16px; }
    #withdrawalModal.show { display: flex; }
    /* 保護者設定モーダル */
    #parentSettingsModal { position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);z-index:2100;display:none;align-items:center;justify-content:center;padding:16px; }
    #parentSettingsModal.show { display:flex; }
    .parent-settings-box { max-height:88vh; overflow-y:auto; }
    /* メニューサブテキスト */
    .menu-item-subtext { display:block; font-size:0.7rem; color:var(--text-sub); font-weight:400; margin-top:1px; }
    /* メニューバッジ */
    .menu-item-badge { font-size:0.62rem;font-weight:700;background:#fff3cd;color:#92600a;border:1px solid #f9c74f;border-radius:6px;padding:2px 7px;margin-right:4px; }
    /* 機能説明エリア */
    .parent-consent-info { background:#f0f9ff;border:1.5px solid #bae6fd;border-radius:12px;padding:13px 15px;margin-bottom:14px; }
    .parent-consent-desc { font-size:0.85rem;font-weight:700;color:#0369a1;margin:0 0 8px; }
    .parent-consent-list { list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:5px; }
    .parent-consent-list li { font-size:0.82rem;color:#0c4a6e; }
    /* 保護者同意チェック */
    .parent-consent-label { display:flex;align-items:center;gap:10px;font-size:0.92rem;font-weight:700;color:var(--navy);cursor:pointer;background:#f8fafc;border:2px solid #e2e8f0;border-radius:10px;padding:11px 14px;margin-bottom:16px; }
    .parent-consent-label input[type="checkbox"] { width:18px;height:18px;flex-shrink:0;accent-color:var(--blue);cursor:pointer; }
    /* フォーム無効状態 */
    .parent-form-disabled { opacity:0.4;pointer-events:none; }
    /* 保護者設定フォーム */
    .parent-setting-group { margin-bottom:14px; }
    .parent-setting-label { display:block;font-size:0.78rem;font-weight:700;color:var(--text-sub);margin-bottom:4px; }
    .parent-setting-input { width:100%;padding:10px 12px;border:2px solid #e2e8f0;border-radius:10px;font-size:0.95rem;background:#f8fafc;outline:none; }
    .parent-setting-input:focus { border-color:var(--blue); }
    .parent-setting-row { display:flex;gap:12px; }
    .parent-setting-row .parent-setting-group { flex:1; }
    .parent-setting-select { width:100%;padding:9px 10px;border:2px solid #e2e8f0;border-radius:10px;font-size:0.9rem;background:#f8fafc;outline:none; }
    .parent-setting-select:focus { border-color:var(--blue); }
    /* レポートプレビュー */
    .parent-report-preview { background:#f0f9ff;border:1.5px solid #bae6fd;border-radius:12px;padding:14px 16px;margin:14px 0; }
    .parent-preview-title { font-size:0.82rem;font-weight:700;color:#0369a1;margin-bottom:8px; }
    .parent-preview-list { list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:5px; }
    .parent-preview-list li { font-size:0.82rem;color:#0c4a6e; }
    .withdrawal-warning { background:#fef2f2; border:1.5px solid #fca5a5; border-radius:10px; padding:12px 14px; color:#dc2626; font-size:0.85rem; font-weight:600; line-height:1.7; margin-bottom:16px; }
    .withdrawal-check-label { display:flex; align-items:flex-start; gap:10px; font-size:0.85rem; color:var(--navy); line-height:1.6; cursor:pointer; margin-bottom:16px; }
    .withdrawal-check-label input[type="checkbox"] { width:18px; height:18px; flex-shrink:0; margin-top:2px; accent-color:#ef4444; cursor:pointer; }

    /* 苦手問題練習確認モーダル */
    #weakQuizModal { position: fixed; top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.6);z-index:2000;display:none;align-items:center;justify-content:center;padding:16px; }
    #weakQuizModal.show { display: flex; }

    /* ログイン方法選択モーダル */
    #loginModal { position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);z-index:2100;display:none;align-items:center;justify-content:center;padding:16px; }
    #loginModal.show { display:flex; }
    .btn-modal-provider { width:100%;padding:14px 16px;border-radius:var(--radius-sm);border:none;font-family:'Outfit',sans-serif;font-size:0.95rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:10px;transition:all 0.2s; }
    .btn-modal-google { background:var(--card);color:var(--navy);border:2px solid #e2e8f0; }
    .btn-modal-google:hover { border-color:#4285f4;color:#4285f4;background:#f8faff; }
    .btn-modal-google:active { transform:scale(0.97); }
    .btn-modal-line { background:#06C755;color:#fff;border:2px solid transparent; }
    .btn-modal-line:hover { background:#05a548;transform:translateY(-1px); }
    .btn-modal-line:active { transform:scale(0.97); }
    .modal-consent-text { font-size:0.78rem;color:var(--text-sub);text-align:center;margin:2px 0 8px;line-height:1.6; }
    .modal-consent-text a { color:var(--blue);text-decoration:underline; }

    /* ランキング登録モーダル */
    #rankingModal { position: fixed; top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.6);z-index:1000;display:none;align-items:center;justify-content:center;padding:16px; }
    #rankingModal.show { display: flex; }
    .modal-box { background: var(--card); border-radius: var(--radius); padding: 24px; width: 100%; max-width: 360px; box-shadow: var(--shadow-lg); }
    .modal-title { font-family: 'Outfit', sans-serif; font-size: 1.1rem; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
    .modal-sub { font-size: 0.82rem; color: var(--text-sub); margin-bottom: 16px; line-height: 1.6; }
    .score-preview { background: var(--bg); border-radius: 10px; padding: 10px 14px; font-size: 0.85rem; color: var(--navy); margin-bottom: 16px; line-height: 1.9; }

    /* ─── メニューモーダル ─── */
    #menuModal { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.52); z-index:1000; align-items:flex-end; justify-content:center; backdrop-filter:blur(3px); -webkit-backdrop-filter:blur(3px); }
    #menuModal.open { display:flex; animation:menuOverlayIn 0.25s ease; }
    @keyframes menuOverlayIn { from{opacity:0} to{opacity:1} }
    .menu-sheet { background:var(--card); border-radius:28px 28px 0 0; width:100%; max-width:480px; max-height:92vh; overflow-y:auto; padding:0 0 env(safe-area-inset-bottom,24px); animation:menuSheetIn 0.32s cubic-bezier(0.34,1.56,0.64,1); overscroll-behavior:contain; }
    @keyframes menuSheetIn  { from{transform:translateY(100%)} to{transform:translateY(0)} }
    @keyframes menuSheetOut { from{transform:translateY(0)} to{transform:translateY(100%)} }
    @keyframes menuOverlayOut { from{opacity:1} to{opacity:0} }
    #menuModal.closing { animation:menuOverlayOut 0.18s ease 0.20s forwards; } /* シートが消えてから暗幕フェード */
    #menuModal.closing .menu-sheet { animation:menuSheetOut 0.22s cubic-bezier(0.4,0,0.6,1) forwards; }
    .menu-handle { width:44px; height:5px; background:#ddd; border-radius:99px; margin:14px auto 0; }
    .beta-free-banner { display:flex; align-items:flex-start; gap:10px; margin:12px 16px 0; background:linear-gradient(135deg,#dcfce7,#bbf7d0); border:1.5px solid #86efac; border-radius:12px; padding:10px 14px; }
    .beta-free-banner-icon { font-size:1.3rem; flex-shrink:0; margin-top:1px; }
    .beta-free-banner-body { display:flex; flex-direction:column; gap:2px; }
    .beta-free-banner-title { font-size:0.78rem; font-weight:700; color:#15803d; line-height:1.35; }
    .beta-free-banner-sub { font-size:0.65rem; font-weight:500; color:#166534; opacity:0.8; line-height:1.3; }
    .menu-profile { display:flex; align-items:center; gap:14px; padding:16px 20px 18px; border-bottom:1px solid #f1f5f9; }
    .menu-avatar { width:54px; height:54px; border-radius:50%; flex-shrink:0; object-fit:cover; border:3px solid var(--blue-light); }
    .menu-avatar-placeholder { width:54px; height:54px; border-radius:50%; background:linear-gradient(135deg,var(--blue),var(--blue-dark)); display:flex; align-items:center; justify-content:center; color:white; font-weight:800; font-size:1.3rem; font-family:'Outfit',sans-serif; flex-shrink:0; border:3px solid var(--blue-light); }
    .menu-profile-info { flex:1; min-width:0; }
    .menu-profile-name { font-family:'Outfit',sans-serif; font-size:1.05rem; font-weight:800; color:var(--navy); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
    .menu-profile-email { font-size:0.72rem; color:var(--text-sub); margin-top:2px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
    .menu-close-btn { background:#f1f5f9; border:none; width:32px; height:32px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1rem; color:var(--text-sub); cursor:pointer; flex-shrink:0; transition:background 0.15s; }
    .menu-close-btn:hover { background:#e2e8f0; color:var(--navy); }
    .menu-section { padding:16px 20px; border-bottom:1px solid #f1f5f9; }
    .menu-section-label { font-size:0.68rem; font-weight:700; color:var(--text-sub); text-transform:uppercase; letter-spacing:0.1em; margin-bottom:10px; }
    .plan-card { border-radius:16px; padding:14px 16px; display:flex; align-items:center; gap:12px; position:relative; overflow:hidden; }
    .plan-card.free { background:var(--bg); border:1.5px solid #e2e8f0; }
    .plan-card.premium { background:linear-gradient(135deg,#1a2340 0%,#0E6E99 100%); border:none; }
    .plan-card.lifetime { background:linear-gradient(135deg,#78350f 0%,#d97706 100%); border:none; }
    .plan-icon { font-size:1.8rem; flex-shrink:0; }
    .plan-info { flex:1; min-width:0; }
    .plan-name { font-family:'Outfit',sans-serif; font-size:0.88rem; font-weight:800; }
    .plan-card.free .plan-name { color:var(--navy); }
    .plan-card.premium .plan-name, .plan-card.lifetime .plan-name { color:white; }
    .plan-desc { font-size:0.72rem; margin-top:2px; line-height:1.5; }
    .plan-card.free .plan-desc { color:var(--text-sub); }
    .plan-card.premium .plan-desc, .plan-card.lifetime .plan-desc { color:rgba(255,255,255,0.72); }
    .plan-upgrade-btn { font-family:'Outfit',sans-serif; font-size:0.75rem; font-weight:700; background:var(--blue); color:white; border:none; border-radius:99px; padding:7px 14px; cursor:pointer; white-space:nowrap; flex-shrink:0; transition:background 0.15s; }
    .plan-upgrade-btn:hover { background:var(--blue-dark); }
    .plan-badge { font-family:'Outfit',sans-serif; font-size:0.65rem; font-weight:700; background:rgba(255,255,255,0.2); color:white; border-radius:99px; padding:3px 10px; flex-shrink:0; }
    .grade-segment { display:flex; gap:6px; background:var(--bg); border-radius:14px; padding:4px; margin-bottom:12px; }
    .grade-seg-btn { flex:1; border:none; border-radius:10px; padding:9px 4px; cursor:pointer; font-family:'Outfit',sans-serif; font-size:0.72rem; font-weight:700; color:var(--text-sub); background:transparent; transition:all 0.18s; display:flex; flex-direction:column; align-items:center; gap:2px; line-height:1.2; }
    .grade-seg-btn .seg-grade { font-size:0.78rem; }
    .grade-seg-btn .seg-lv { font-size:0.6rem; font-weight:600; }
    .grade-seg-btn.selected { background:white; color:var(--blue); box-shadow:0 2px 8px rgba(20,146,204,0.18); }
    .grade-seg-btn.selected .seg-grade { color:var(--blue); }
    .grade-seg-btn.selected .seg-lv { color:var(--blue-dark); }
    .grade-level-display { background:var(--navy); border-radius:14px; padding:14px 16px; display:flex; align-items:center; gap:12px; animation:levelCardFadeIn 0.2s ease; }
    @keyframes levelCardFadeIn { from{opacity:0;transform:translateY(4px)} to{opacity:1;transform:translateY(0)} }
    .level-display-badge { background:rgba(255,255,255,0.12); border-radius:12px; padding:8px 12px; text-align:center; flex-shrink:0; }
    .level-display-lv { font-family:'Outfit',sans-serif; font-size:0.65rem; font-weight:700; color:rgba(255,255,255,0.5); text-transform:uppercase; letter-spacing:0.08em; }
    .level-display-num { font-family:'Outfit',sans-serif; font-size:1.6rem; font-weight:900; color:#60a5fa; line-height:1; }
    .level-display-info { flex:1; }
    .level-display-title { font-size:0.95rem; font-weight:700; color:white; margin-bottom:6px; }
    .level-display-bar-bg { background:rgba(255,255,255,0.12); border-radius:99px; height:6px; overflow:hidden; margin-bottom:4px; }
    .level-display-bar { height:100%; border-radius:99px; background:linear-gradient(90deg,#60a5fa,#a78bfa); transition:width 0.6s ease; }
    .level-display-sub { font-size:0.7rem; color:rgba(255,255,255,0.45); }
    .menu-item { display:flex; align-items:center; justify-content:space-between; padding:13px 16px; border-radius:12px; cursor:pointer; margin-bottom:6px; border:1.5px solid #f1f5f9; transition:all 0.15s; text-decoration:none; }
    .menu-item:hover { border-color:var(--blue); background:var(--blue-light); }
    .menu-item.disabled { opacity:0.45; cursor:default; pointer-events:none; }
    .menu-item-left { display:flex; align-items:center; gap:10px; }
    .menu-item-icon { font-size:1.1rem; width:24px; text-align:center; }
    .menu-item-text { font-size:0.9rem; font-weight:600; color:var(--navy); }
    .menu-item-right { display:flex; align-items:center; gap:6px; }
    .menu-item-arrow { color:var(--text-sub); font-size:1rem; }
    .menu-item-badge { font-size:0.62rem; font-weight:700; background:#fee2e2; color:#ef4444; border-radius:99px; padding:2px 8px; }
    .menu-logout-btn { width:calc(100% - 40px); margin:4px 20px 20px; padding:14px; border:2px solid #fee2e2; background:white; color:#ef4444; border-radius:14px; font-family:'Outfit',sans-serif; font-size:0.95rem; font-weight:700; cursor:pointer; transition:all 0.15s; display:block; }
    .menu-logout-btn:hover { background:#fee2e2; }
    .menu-item-danger { border-color:#fecaca !important; background:#fff5f5; }
    .menu-item-danger:hover { border-color:#ef4444 !important; background:#fee2e2; }
    .menu-item-text-danger { color:#ef4444; }

    /* ─── オプションパネル ─── */
/* ─── オプションパネル ─── */
.menu-option-panel {
  display: none;
  position: absolute;
  inset: 0;
  height: 100%; /* 親の高さを明示的に継承して overflow を確定させる */
  background: var(--card);
  border-radius: 28px 28px 0 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch; /* iOS Safari スクロール有効化 */
  z-index: 10;
}

.menu-option-panel.open {
  display: block;
  animation: optionPanelIn 0.28s cubic-bezier(0.34, 1.2, 0.64, 1);
}

@keyframes optionPanelIn {
  from {
    transform: translateX(40px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.menu-option-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid #f1f5f9;
}

.menu-option-back {
  background: none;
  border: none;
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--blue);
  cursor: pointer;
  padding: 4px 0;
  width: 60px;
  text-align: left;
}

.menu-option-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
}

.menu-option-version {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-sub);
  padding: 16px 0 8px;
  letter-spacing: 0.05em;
}

/* 右下固定バージョンバッジ */
.version-badge {
  position: fixed;
  bottom: 6px;
  right: 8px;
  font-size: 0.62rem;
  color: rgba(0, 0, 0, 0.18);
  pointer-events: none;
  z-index: 9999;
  letter-spacing: 0.04em;
  user-select: none;
  transition: color 0.15s;
}
/* 変更内容が取得できた時：タップ可能 */
.version-badge.clickable {
  pointer-events: auto;
  cursor: pointer;
  color: rgba(0, 0, 0, 0.28);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
}
.version-badge.clickable:active {
  color: rgba(0, 0, 0, 0.5);
}

/* ─── トグルスイッチ ─── */
.toggle-switch {
  width: 44px;
  height: 26px;
  background: #e2e8f0;
  border-radius: 99px;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.toggle-switch.toggle-on {
  background: var(--blue);
}

.toggle-switch.toggle-disabled {
  opacity: 0.4;
  cursor: default;
}

.toggle-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transition: left 0.2s;
}

.toggle-switch.toggle-on .toggle-knob {
  left: 21px;
}
    .menu-option-panel.open {
      display: block;
    }
    @keyframes optionPanelIn {
      from { transform: translateX(100%); opacity: 0; }
      to   { transform: translateX(0);   opacity: 1; }
    }
    .menu-option-header {
      position: sticky;
      top: 0;
      z-index: 1;
      background: var(--card);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px 12px;
      border-bottom: 1px solid #f1f5f9;
    }
    .menu-option-back {
      background: none;
      border: none;
      font-family: 'Outfit', sans-serif;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--blue);
      cursor: pointer;
      padding: 4px 0;
      width: 60px;
    }
    .menu-option-title {
      font-family: 'Outfit', sans-serif;
      font-size: 1rem;
      font-weight: 800;
      color: var(--navy);
    }
    /* トグルスイッチ */
    .toggle-switch {
      width: 44px; height: 26px;
      background: #e2e8f0;
      border-radius: 99px;
      position: relative;
      transition: background 0.2s;
      flex-shrink: 0;
    }
    .toggle-switch.toggle-on { background: var(--blue); }
    .toggle-switch.toggle-disabled { opacity: 0.4; cursor: default; }
    .toggle-knob {
      position: absolute;
      top: 3px; left: 3px;
      width: 20px; height: 20px;
      background: white;
      border-radius: 50%;
      box-shadow: 0 1px 4px rgba(0,0,0,0.2);
      transition: left 0.2s;
    }
    .toggle-switch.toggle-on .toggle-knob { left: 21px; }
    /* menu-sheetをrelativeに */
    .menu-sheet { position: relative; }

    /* ランキング画面 */
    .ranking-header { background: var(--navy); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 12px; text-align: center; box-shadow: var(--shadow-lg); }
    .ranking-header-title { font-family: 'Outfit', sans-serif; font-size: 1.3rem; font-weight: 800; color: white; }
    .ranking-header-sub { font-size: 0.78rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
    .ranking-sticky-header { position: sticky; top: 0; z-index: 10; background: var(--card); box-shadow: 0 2px 12px rgba(20,146,204,0.13); overflow: hidden; border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
    .ranking-sticky-header .setting-page-header { background: var(--blue-light); padding: 10px 20px; margin-bottom: 0; }
    .ranking-sticky-header .setting-header-sub { border-left-color: var(--blue-dark); color: var(--blue-dark); }
    .ranking-filter { display: flex; justify-content: center; align-items: center; gap: 6px; margin-bottom: 0; padding: 10px 16px; background: var(--card); }
    .rank-filter-btn { padding: 6px 14px; border-radius: 99px; border: 2px solid #e2e8f0; background: var(--card); font-family: 'Outfit', sans-serif; font-size: 0.82rem; font-weight: 600; color: var(--text-sub); cursor: pointer; transition: all 0.15s; }
    .rank-filter-btn.active { border-color: var(--blue); background: var(--blue-light); color: var(--blue); }
    #rankingScreen.active { position: fixed; inset: 0; display: flex; flex-direction: column; overflow: hidden; background: var(--bg); z-index: 50; }
    .rank-slide-viewport { flex: 1; overflow: hidden; touch-action: pan-y; min-height: 0; }
    .ranking-footer { flex-shrink: 0; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: var(--card); box-shadow: 0 -2px 12px rgba(0,0,0,0.07); }
    .ranking-footer .btn-back-modern { margin-top: 0; }
    .rank-slide-track { display: flex; height: 100%; will-change: transform; transform: translate3d(0,0,0); }
    .rank-slide-track.rank-track-animating { transition: transform 0.28s cubic-bezier(0.22, 0.8, 0.2, 1); }
    .rank-slide-panel { flex: 0 0 100%; overflow-y: auto; padding: 8px 12px 16px; scrollbar-width: none; }
    .rank-slide-panel::-webkit-scrollbar { display: none; }
    @keyframes rankKira {
      0%   { transform: translateX(-150%) skewX(-20deg); }
      100% { transform: translateX(300%)  skewX(-20deg); }
    }
    .ranking-item { background: var(--card); border-radius: var(--radius-sm); padding: 10px 16px; margin-bottom: 8px; display: flex; align-items: center; gap: 12px; box-shadow: var(--shadow); border: 2px solid transparent; }
    .ranking-item.gold   { border-color: #f59e0b; background: #fffbeb; position: relative; overflow: hidden; }
    .ranking-item.silver { border-color: #94a3b8; background: #f1f5f9; position: relative; overflow: hidden; }
    .ranking-item.bronze { border-color: #b45309; background: #fef3c7; position: relative; overflow: hidden; }
    .ranking-item.gold::after, .ranking-item.silver::after, .ranking-item.bronze::after {
      content: ''; position: absolute; inset: 0; width: 40%;
      background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.55) 50%, transparent 100%);
      transform: translateX(-150%) skewX(-20deg);
      animation: rankKira 3.2s ease-in-out infinite;
      pointer-events: none;
    }
    .ranking-item.gold::after   { animation-delay: 0s; }
    .ranking-item.silver::after { animation-delay: 1.1s; }
    .ranking-item.bronze::after { animation-delay: 2.2s; }
    .rank-num { font-family: 'Outfit', sans-serif; font-size: 2.4rem; font-weight: 900; width: 44px; text-align: center; flex-shrink: 0; color: var(--text-sub); }
    .rank-avatar { width: 63px; height: 63px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
    .rank-avatar-img { width: 63px; height: 63px; border-radius: 50%; object-fit: cover; }
    .rank-avatar-emoji { font-size: 2.85rem; line-height: 1; }
    .rank-avatar-placeholder { font-size: 2.55rem; line-height: 1; opacity: 0.4; }
    .rank-info { flex: 1; }
    .rank-title { font-size: 0.68rem; font-weight: 700; color: var(--blue); margin-bottom: 2px; line-height: 1.2; }
    .rank-name { font-family: 'Outfit', sans-serif; font-weight: 700; color: var(--navy); font-size: 0.95rem; }
    .rank-meta { font-size: 0.72rem; color: var(--text-sub); margin-top: 2px; }
    .ranking-empty { text-align: center; padding: 32px; color: var(--text-sub); font-size: 0.9rem; line-height: 1.8; }
    .ranking-loading { text-align: center; padding: 24px; color: var(--text-sub); font-size: 0.85rem; }
    .rank-time { font-size: 0.68rem; color: var(--text-sub); margin-top: 2px; }

    /* エフェクト */
    canvas#fireworksCanvas { position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:998;display:none; }
    #correctCircle { position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:280px;height:280px;border-radius:50%;border:12px solid var(--blue);opacity:0;pointer-events:none;z-index:999; }
    #correctCircle.animate { animation:circleAnim 0.8s ease-out forwards; }
    @keyframes circleAnim { 0%{transform:translate(-50%,-50%) scale(0);opacity:0.8} 60%{transform:translate(-50%,-50%) scale(1.1);opacity:0.5} 100%{transform:translate(-50%,-50%) scale(1.4);opacity:0} }
    #wrongMark { position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:180px;height:180px;opacity:0;pointer-events:none;z-index:999; }
    #wrongMark.animate { animation:wrongAnim 0.8s ease-out forwards; }
    @keyframes wrongAnim { 0%{transform:translate(-50%,-50%) scale(0);opacity:0} 30%{transform:translate(-50%,-50%) scale(1.2);opacity:1} 70%{transform:translate(-50%,-50%) scale(1.0);opacity:1} 100%{transform:translate(-50%,-50%) scale(1.0);opacity:0} }
    .wrong-line { position:absolute;width:100%;height:14px;background:var(--red);border-radius:99px;top:50%;left:0;transform-origin:center; }
    .wrong-line:nth-child(1) { transform:translateY(-50%) rotate(45deg); }
    .wrong-line:nth-child(2) { transform:translateY(-50%) rotate(-45deg); }
    #speedBanner { position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);font-family:'Outfit',sans-serif;font-size:3rem;font-weight:900;padding:0;pointer-events:none;z-index:1000;opacity:0;white-space:nowrap;background:linear-gradient(160deg,#FF7800 0%,#FFE000 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 0 28px rgba(255,160,0,0.9)) drop-shadow(0 4px 14px rgba(0,0,0,0.3)); }
    #speedBanner.animate { animation:popInAndShake 1.8s ease-out forwards; }
    @keyframes popInAndShake { 0%{transform:translate(-50%,-50%) scale(0) rotate(-8deg);opacity:0} 18%{transform:translate(-50%,-50%) scale(1.28) rotate(2deg);opacity:1} 28%{transform:translate(-50%,-50%) scale(1.0) rotate(-4deg);opacity:1} 38%{transform:translate(-50%,-50%) scale(1.0) rotate(3deg);opacity:1} 48%{transform:translate(-50%,-50%) scale(1.0) rotate(-2deg);opacity:1} 58%{transform:translate(-50%,-50%) scale(1.0) rotate(0deg);opacity:1} 75%{transform:translate(-50%,-50%) scale(1.0);opacity:1} 100%{transform:translate(-50%,-50%) scale(1.1);opacity:0} }
    #correctCountBanner { position:fixed;top:38%;left:50%;transform:translate(-50%,-50%) scale(0);font-family:'Hiragino Kaku Gothic ProN','Hiragino Sans','Noto Sans JP',sans-serif;font-size:2.6rem;font-weight:700;pointer-events:none;z-index:1001;opacity:0;white-space:nowrap;color:#ff5a00;text-shadow:0 0 0 #fff,2px 2px 0 #fff,-2px -2px 0 #fff,2px -2px 0 #fff,-2px 2px 0 #fff,0 3px 10px rgba(0,0,0,0.2); }
    #correctCountBanner.graduation { color:#7c3aed; }
    #correctCountBanner.animate { animation:countPop 1.4s ease-out forwards; }
    @keyframes countPop { 0%{transform:translate(-50%,-50%) scale(0.2);opacity:0} 20%{transform:translate(-50%,-50%) scale(1.35);opacity:1} 35%{transform:translate(-50%,-50%) scale(0.95);opacity:1} 50%{transform:translate(-50%,-50%) scale(1.05);opacity:1} 70%{transform:translate(-50%,-50%) scale(1.0);opacity:1} 88%{transform:translate(-50%,-50%) scale(1.0);opacity:1} 100%{transform:translate(-50%,-50%) scale(1.0);opacity:0} }
    #graduationStampOverlay { position:fixed;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:1002;opacity:0; }
    #graduationStampOverlay.animate { animation:stampIn 2.2s cubic-bezier(0.18,0.89,0.32,1.28) forwards; }
    #graduationStampImg { width:min(260px,70vw);height:auto;transform:rotate(-12deg);filter:drop-shadow(0 6px 18px rgba(0,0,0,0.35)); }
    @keyframes stampIn { 0%{transform:scale(3.5);opacity:0} 15%{transform:scale(0.88);opacity:1} 25%{transform:scale(1.06);opacity:1} 35%{transform:scale(0.97);opacity:1} 50%{transform:scale(1.0);opacity:1} 75%{transform:scale(1.0);opacity:1} 100%{transform:scale(1.0);opacity:0} }

/* ────────────────────────────────────────
   レベルカード 3Dフリップ
──────────────────────────────────────── */
.level-card-flipper {
  perspective: 900px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.level-card-inner {
  position: relative; width: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.34,1.2,0.64,1);
}
.level-card-flipper.flipped .level-card-inner {
  transform: rotateY(180deg);
}
.level-card-front, .level-card-back {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.level-card-back {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  transform: rotateY(180deg);
  background: linear-gradient(135deg,#1e3a5f 0%,#0E6E99 60%,#14b8a6 100%);
  border-radius: 20px;
  padding: 18px 18px 20px;
  display: flex; flex-direction: column; justify-content: space-between;
  color: white; box-sizing: border-box;
  box-shadow: 0 8px 32px rgba(14,110,153,0.35);
  overflow: hidden;
}
.lc-back-hint {
  font-size: 0.65rem; font-weight: 700;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase; letter-spacing: 0.1em;
}
/* ─── 裏面：ことわざレイアウト ─── */
.lc-back-top-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.lc-back-close-btn {
  background: rgba(255,255,255,0.18);
  border: none; border-radius: 99px;
  padding: 4px 10px;
  font-size: 0.72rem; font-weight: 700;
  cursor: pointer; color: white;
  transition: background 0.2s;
}
.lc-back-close-btn:hover { background: rgba(255,255,255,0.32); }
.lc-proverb-center {
  flex: 1;
  display: flex; align-items: center; gap: 12px;
  padding: 4px 0;
}
.lc-proverb-text { flex: 1; min-width: 0; }
.lc-proverb-en {
  font-family: 'Outfit', sans-serif;
  font-size: 0.92rem; font-weight: 700; font-style: italic;
  color: white; line-height: 1.5;
}
.lc-proverb-jp {
  font-size: 0.75rem; color: rgba(255,255,255,0.58);
  margin-top: 6px; line-height: 1.5;
}
.lc-proverb-speak-btn {
  background: rgba(255,255,255,0.15);
  border: none; border-radius: 50%;
  width: 36px; height: 36px;
  font-size: 1rem; line-height: 1;
  cursor: pointer; color: white;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.lc-proverb-speak-btn:hover { background: rgba(255,255,255,0.28); }
.lc-proverb-speak-btn.speaking { background: rgba(255,200,0,0.35); }

/* ─── ログインボーナスポップアップ ─── */
.login-bonus-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  animation: lbpFadeIn 0.2s ease;
}
.login-bonus-popup {
  background: linear-gradient(155deg, #1e3a5f 0%, #0E6E99 55%, #14b8a6 100%);
  border-radius: 28px;
  padding: 36px 28px 28px;
  width: min(300px, 88vw);
  text-align: center;
  color: white;
  box-shadow: 0 24px 64px rgba(0,0,0,0.45);
  position: relative;
  animation: lbpPopIn 0.38s cubic-bezier(0.34,1.4,0.64,1);
}
.lbp-close-btn {
  position: absolute; top: 14px; right: 14px;
  background: rgba(255,255,255,0.15);
  border: none; border-radius: 50%;
  width: 28px; height: 28px;
  cursor: pointer; color: white;
  font-size: 0.8rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.lbp-close-btn:hover { background: rgba(255,255,255,0.3); }
.lbp-fire { font-size: 2.8rem; line-height: 1; margin-bottom: 6px; }
.lbp-streak-days {
  font-family: 'Outfit', sans-serif;
  font-size: 4rem; font-weight: 900; line-height: 1;
}
.lbp-streak-label {
  font-size: 0.9rem; font-weight: 700;
  opacity: 0.8; margin-bottom: 16px;
}
.lbp-xp {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem; font-weight: 900;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}
.lbp-claim-btn {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  border: none; border-radius: 99px; color: white;
  font-family: 'Outfit', sans-serif;
  font-size: 1rem; font-weight: 800;
  padding: 13px 0; cursor: pointer; width: 100%;
  box-shadow: 0 4px 18px rgba(245,158,11,0.5);
  transition: all 0.18s;
}
.lbp-claim-btn:hover:not(:disabled) { filter: brightness(1.1); transform: translateY(-1px); }
.lbp-claim-btn.claimed {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.55);
  cursor: default; transform: none;
  box-shadow: none;
}
@keyframes lbpFadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
@keyframes lbpPopIn {
  from { opacity: 0; transform: scale(0.82) translateY(24px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
/* ===== レベルアップポップアップ ===== */
.levelup-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2100;
  display: flex; align-items: center; justify-content: center;
  animation: lbpFadeIn 0.2s ease;
}
.levelup-popup {
  background: linear-gradient(150deg, #7b2ff7 0%, #e040a0 55%, #ff8c42 100%);
  border-radius: 28px;
  padding: 36px 28px 28px;
  width: min(320px, 90vw);
  text-align: center;
  color: white;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  animation: lvupPopIn 0.4s cubic-bezier(0.34,1.4,0.64,1);
}
.levelup-emoji { font-size: 3rem; line-height: 1; margin-bottom: 4px; }
.levelup-headline {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem; font-weight: 900;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
  margin-bottom: 18px;
}
.levelup-lv-row {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; margin-bottom: 16px;
}
.levelup-from {
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem; font-weight: 800; opacity: 0.65;
}
.levelup-arrow { font-size: 1.4rem; }
.levelup-to {
  font-family: 'Outfit', sans-serif;
  font-size: 2.4rem; font-weight: 900;
  text-shadow: 0 0 24px rgba(255,255,255,0.6);
}
.levelup-new-title {
  font-size: 1.1rem; font-weight: 700;
  background: rgba(255,255,255,0.2);
  border-radius: 99px;
  padding: 6px 18px;
  margin-bottom: 8px;
}
.levelup-title-change {
  font-size: 0.8rem; opacity: 0.8;
  margin-bottom: 18px;
}
.levelup-close-btn {
  width: 100%; padding: 13px;
  border-radius: 99px; border: none;
  background: white;
  color: #7b2ff7;
  font-family: 'Outfit', sans-serif;
  font-size: 1rem; font-weight: 800;
  cursor: pointer;
  margin-top: 18px;
  transition: all 0.2s;
}
.levelup-close-btn:hover { background: rgba(255,255,255,0.9); transform: translateY(-1px); }
.levelup-close-btn:active { transform: scale(0.97); }
@keyframes lvupPopIn {
  from { opacity: 0; transform: scale(0.7); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes lvupFadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

@keyframes _streakFadeUp {
  0%   { opacity: 0; transform: translateX(-50%) translateY(10px); }
  20%  { opacity: 1; transform: translateX(-50%) translateY(0); }
  80%  { opacity: 1; }
  100% { opacity: 0; transform: translateX(-50%) translateY(-8px); }
}
.lc-front-tap-hint {
  font-size: 0.62rem; color: rgba(255,255,255,0.28);
  text-align: center; margin-top: 4px; pointer-events: none;
}
/* ── 正解：緑フラッシュ ── */
@keyframes glowGreen {
  0%   { box-shadow: 0 0 0 0   rgba(16,185,129,0.0), var(--shadow); }
  40%  { box-shadow: 0 0 0 12px rgba(16,185,129,0.35), var(--shadow); }
  100% { box-shadow: 0 0 0 4px rgba(16,185,129,0.18), var(--shadow); }
}

/* ── 不正解：赤フラッシュ ── */
@keyframes glowRed {
  0%   { box-shadow: 0 0 0 0   rgba(232,96,76,0.0), var(--shadow); }
  40%  { box-shadow: 0 0 0 12px rgba(232,96,76,0.38), var(--shadow); }
  100% { box-shadow: 0 0 0 4px rgba(232,96,76,0.18), var(--shadow); }
}

/* ── 不正解：シェイク ── */
@keyframes shake {
  0%,100% { transform: translateX(0); }
  15%     { transform: translateX(-8px); }
  30%     { transform: translateX(7px); }
  45%     { transform: translateX(-6px); }
  60%     { transform: translateX(5px); }
  75%     { transform: translateX(-3px); }
  90%     { transform: translateX(2px); }
}

/* ── 正解：王冠ふわり ── */
/* ===== ワープ＆カウントダウン演出 ===== */

#warpOverlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0,0,0,0);
  pointer-events: none;
  transition: background 0.3s ease;
}

#warpOverlay.active {
  pointer-events: all;
}

/* カウントダウン表示エリア */
#countdownDisplay {
  position: fixed;
  inset: 0;
  z-index: 9100;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* 数字 */
#countdownNum {
  font-family: 'Outfit', sans-serif;
  font-size: 20vw;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;

  color: white;

  /* ぼやけ防止 */
  backface-visibility: hidden;
  will-change: transform, opacity;

  /* シャドウ弱め（くっきり） */
  text-shadow:
    0 0 20px rgba(20,146,204,0.9),
    0 0 40px rgba(20,146,204,0.6);

  opacity: 0;
  transform: scale(0.3);
}

/* カウント表示アニメ */
#countdownNum.pop-in {
  animation: countPop 0.85s cubic-bezier(0.34,1.56,0.64,1) forwards;
}

/* GO表示 */
#countdownNum.go-style {
  font-size: 22vw;
  color: #FFD700;
  text-shadow:
    0 0 30px rgba(255,215,0,0.9),
    0 0 60px rgba(255,165,0,0.6);
}

/* カウントアニメーション */
@keyframes countPop {

  0% {
    opacity:0;
    transform: scale(0.3) rotate(-8deg);
  }

  40% {
    opacity:1;
    transform: scale(1.15) rotate(2deg);
  }

  65% {
    transform: scale(0.95) rotate(0deg);
  }

  80% {
    opacity:0.9;
    transform: scale(1.0);
  }

  100% {
    opacity:0;
    transform: scale(2.2); /* blur削除 */
  }

}

/* 白フラッシュ */
#flashScreen {
  position: fixed;
  inset: 0;
  z-index: 9200;
  background: white;
  opacity: 0;
  pointer-events: none;
}

#flashScreen.flash {
  animation: whiteFlash 0.6s ease-out forwards;
}

@keyframes whiteFlash {

  0% {
    opacity: 0;
  }

  15% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }

}

/* 王冠バースト */
@keyframes crownBurst {

  0% {
    opacity: 0;
    transform:
      translate(-50%,-50%)
      translate(0,0)
      scale(0)
      rotate(-20deg);
  }

  30% {
    opacity: 1;
  }

  70% {
    opacity: 0.85;
    transform:
      translate(-50%,-50%)
      translate(var(--dx),var(--dy))
      scale(1.2)
      rotate(10deg);
  }

  100% {
    opacity: 0;
    transform:
      translate(-50%,-50%)
      translate(calc(var(--dx)*1.3),calc(var(--dy)*1.5 - 20px))
      scale(0.6)
      rotate(20deg);
  }

}

/* ── question-card の演出クラス ── */
.question-card.correct {
  border: 1.5px solid var(--green);
  background: var(--green-light);
  animation: glowGreen 0.55s ease forwards;
}
.question-card.wrong {
  border: 1.5px solid var(--red);
  background: var(--red-light);
  animation: glowRed 0.45s ease forwards, shake 0.45s ease forwards;
}

/* ── 王冠パーティクル ── */
.crown-particle {
  position: absolute;
  left: 50%; top: 50%;
  font-size: 16px;
  opacity: 0;
  pointer-events: none;
  animation: crownBurst 0.9s ease-out forwards;
}


/* ===== サブカテゴリ選択 ===== */
.sub-category-group {
  margin-bottom: 14px;
  overflow: hidden;
  max-height: 600px;
  opacity: 1;
  transition: max-height 0.28s ease, opacity 0.2s ease, margin-bottom 0.28s ease;
}
.sub-category-group.cat-group-collapsed {
  max-height: 0;
  opacity: 0;
  margin-bottom: 0;
}

.sub-category-group-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  padding-left: 2px;
}

.sub-category-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sub-check-label {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1.5px solid #e2e8f0;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--navy);
  transition: background 0.15s, border-color 0.15s;
}

.sub-check-label:has(.sub-check:checked) {
  background: var(--blue-light);
  border-color: var(--blue);
  color: var(--blue);
  font-weight: 600;
}

.sub-check {
  width: 15px;
  height: 15px;
  accent-color: var(--blue);
  cursor: pointer;
  flex-shrink: 0;
}

.sub-select-all-btn {
  font-size: 0.75rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--blue);
  background: var(--blue-light);
  border: 1.5px solid var(--blue);
  border-radius: 8px;
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.15s;
}
.sub-select-all-btn:hover { background: var(--blue); color: white; }

.sub-reset-btn {
  color: #e53e3e;
  border-color: #e53e3e;
  background: #fff5f5;
}
.sub-reset-btn:hover { background: #e53e3e; color: white; }

/* ===== カテゴリトグルピル ===== */
.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  border-radius: 99px;
  border: 1.5px solid #cbd5e1;
  background: #f1f5f9;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: #94a3b8;
  cursor: pointer;
  transition: all 0.18s;
  white-space: nowrap;
}
.cat-pill.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(20,146,204,0.25);
}
.cat-pill.active:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.cat-pill.partial {
  background: #f59e0b;
  border-color: #f59e0b;
  color: #fff;
  box-shadow: 0 2px 8px rgba(245,158,11,0.25);
}
.cat-pill-count {
  font-size: 0.7rem;
  font-weight: 600;
  opacity: 0.82;
  background: rgba(255,255,255,0.25);
  padding: 1px 6px;
  border-radius: 99px;
}
.cat-pill:not(.active):not(.partial) .cat-pill-count {
  background: rgba(0,0,0,0.06);
}
.cat-pill-arrow {
  font-size: 0.75rem;
  transition: transform 0.2s;
}

/* ─── 設定画面：学年・レベル表示カード（表示専用） ─── */
.ts-level-card {
  background: var(--navy);
  border-radius: 18px;
  padding: 16px 18px;
  margin-bottom: 6px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.ts-level-card::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 130px; height: 130px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  pointer-events: none;
}
.ts-level-card-inner {
  display: flex;
  align-items: center;
  gap: 14px;
}
.ts-level-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.ts-grade-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.ts-level-badge-wrap {
  background: rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 6px 12px;
  text-align: center;
}
.ts-level-lv-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.55rem;
  font-weight: 700;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
}
.ts-level-badge {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: #60a5fa;
  line-height: 1;
}
.ts-level-right {
  flex: 1;
  min-width: 0;
}
.ts-level-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin-bottom: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ts-bar-bg {
  background: rgba(255,255,255,0.12);
  border-radius: 99px;
  height: 6px;
  overflow: hidden;
  margin-bottom: 5px;
}
.ts-bar {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, #60a5fa, #a78bfa);
  transition: width 0.6s ease;
}
.ts-bar-label {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.4);
}
.ts-grade-hint {
  font-size: 0.7rem;
  color: var(--text-sub);
  text-align: right;
  margin-bottom: 12px;
  padding-right: 2px;
}
.setting-group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

/* ═══════════════════════════════════════
   クイズ画面 — モダン統一リスタイル
═══════════════════════════════════════ */

/* HUD（問題番号・スコア） */
.quiz-hud {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}
.hud-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(20,146,204,0.09);
}
.hud-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}
.hud-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--navy);
  line-height: 1.1;
}
.hud-value.blue { color: var(--blue); }

/* タイマーカード */
.timer-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(20,146,204,0.09);
}
.timer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.timer-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: 0.05em;
}
.timer-num {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
}
.timer-bar-bg {
  background: #e2e8f0;
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
}
.timer-bar {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--blue), #60a5fa);
  transition: width 0.9s linear, background 0.3s;
}
.timer-bar.danger {
  background: linear-gradient(90deg, var(--red), #ff8a80);
}

/* 問題カード */
.question-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px 18px 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-lg);
  border: 1.5px solid rgba(20,146,204,0.09);
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, background 0.2s;
}
.jp-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
  line-height: 1.6;
}
.blank-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 2px;
}
.blank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: white;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 0.82rem;
  width: 22px; height: 22px;
  border-radius: 6px;
  margin: 0 2px;
  vertical-align: middle;
}

/* 入力カード */
.input-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
  border: 1.5px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: border-color 0.2s;
}
.input-card.correct { border-color: var(--green); background: var(--green-light); }
.input-card.wrong   { border-color: var(--red);   background: var(--red-light); }
.input-inner { flex: 1; }
.input-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.input-field {
  width: 100%;
  border: none;
  background: transparent;
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
  outline: none;
  padding: 0;
}
.input-field::placeholder { color: #c0b8b5; font-weight: 500; }
.hint-btn {
  flex-shrink: 0;
  background: var(--yellow-light);
  border: 1.5px solid var(--yellow);
  border-radius: var(--radius-xs);
  padding: 8px 10px;
  font-size: 0.75rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: #92400e;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  line-height: 1.2;
}
.hint-btn:hover { background: var(--yellow); color: white; }
.hint-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.hint-count {
  font-size: 0.6rem;
  font-weight: 600;
  color: inherit;
  display: block;
}

/* フィードバックカード */
.feedback-card {
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 8px;
  display: none;
  align-items: center;
  gap: 12px;
  border: 2px solid transparent;
}
.feedback-card.correct {
  background: var(--green-light);
  border-color: var(--green);
  display: flex;
}
.feedback-card.wrong {
  background: var(--red-light);
  border-color: var(--red);
  display: flex;
}
.feedback-emoji {
  font-size: 1.8rem;
  flex-shrink: 0;
  line-height: 1;
}
.feedback-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.3;
}
.feedback-status-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.feedback-body { flex: 1; }
.feedback-close-badge {
  display: inline-block;
  background: #f59e0b;
  color: white;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 20px;
  margin-top: 3px;
  letter-spacing: 0.02em;
}

/* ── Answer flashcard (不正解時) ── */
.answer-flashcard {
  perspective: 800px;
  margin-top: 10px;
  cursor: pointer;
  border-radius: 10px;
}
.flashcard-inner {
  display: grid;
  grid-template: 1fr / 1fr;
  transform-style: preserve-3d;
  transition: transform 0.45s ease;
  border-radius: 10px;
  min-height: 72px;
}
.flashcard-inner.flipped {
  transform: rotateY(180deg);
}
.flashcard-front,
.flashcard-back {
  grid-area: 1 / 1;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 10px;
  padding: 10px 12px;
}
.flashcard-front {
  background: white;
  border: 1.5px solid var(--red);
}
.answer-flashcard--correct .flashcard-front {
  border-color: var(--green);
}
.flashcard-back {
  background: #fffbeb;
  border: 1.5px solid #f59e0b;
  transform: rotateY(180deg);
}
.flashcard-label {
  font-size: 0.63rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.flashcard-answer {
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.6;
  margin-bottom: 4px;
}
.flashcard-explanation {
  font-size: 0.85rem;
  color: var(--navy);
  line-height: 1.6;
  margin-bottom: 4px;
}
.flashcard-flip-hint {
  font-size: 0.63rem;
  color: var(--text-sub);
  text-align: right;
}
.wrong-char {
  color: var(--red);
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.graduated-badge {
  display: none;
  text-align: center;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  border-radius: var(--radius-xs);
  padding: 6px 14px;
  margin-bottom: 8px;
  box-shadow: 0 2px 8px rgba(245,158,11,0.35);
}

/* 結果画面 */
.result-header {
  background: linear-gradient(135deg, var(--navy) 0%, #2d4a6e 100%);
  border-radius: var(--radius);
  padding: 24px 20px 20px;
  text-align: center;
  margin-bottom: 14px;
  box-shadow: var(--shadow-lg);
}
.result-emoji {
  font-size: 3.2rem;
  margin-bottom: 6px;
  display: block;
  animation: float 2s ease-in-out infinite;
}
.result-msg {
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem;
  font-weight: 900;
  color: white;
  margin-bottom: 6px;
}
.result-score {
  font-family: 'Outfit', sans-serif;
  font-size: 2.8rem;
  font-weight: 900;
  color: #fbbf24;
  line-height: 1;
  text-shadow: 0 2px 12px rgba(251,191,36,0.5);
}
.result-score-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-top: 4px;
}
.result-stats {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 10px;
  margin-bottom: 14px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(20,146,204,0.09);
}
.stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: 0.04em;
}
.review-section {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.review-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1.5px solid #f1f5f9;
}
.review-item {
  background: var(--red-light);
  border-left: 4px solid var(--red);
  border-radius: var(--radius-xs);
  padding: 10px 12px;
  margin-bottom: 8px;
}
.review-jp {
  font-size: 0.85rem;
  color: var(--navy);
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.5;
}
.review-ans {
  font-family: 'Outfit', sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--green);
}
.review-all-correct {
  text-align: center;
  padding: 20px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
  background: var(--green-light);
  border-radius: var(--radius-xs);
}

/* ── 次の問題ボタン ── */
#nextBtn {
  width: 100%;
  padding: 16px;
  border-radius: var(--radius);
  border: none;
  background: var(--blue);
  color: white;
  font-family: 'Outfit', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(20,146,204,0.3);
  margin-top: 4px;
}
#nextBtn:hover { background: var(--blue-dark); }
#nextBtn:active { transform: scale(0.97); }

/* ═══════════════════════════════════════
   学習記録カード（ホーム画面）
═══════════════════════════════════════ */
.study-record-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(20,146,204,0.12);
  transition: all 0.18s;
}
.src-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.src-title-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.src-icon { font-size: 1.1rem; }
.src-title {
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--navy);
}
.src-free-badge {
  font-size: 0.62rem;
  font-weight: 700;
  background: linear-gradient(135deg, #16a34a, #4ade80);
  color: white;
  border-radius: 99px;
  padding: 2px 8px;
}
.src-arrow { font-size: 1.2rem; color: var(--text-sub); }
.src-stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px 6px;
  margin-bottom: 8px;
}
.src-stat { text-align: center; }
.src-stat-val {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 3px;
}
.src-stat-xp { color: #d97706; }
@keyframes xpGlowPulse {
  0%   { color: #d97706; text-shadow: none; transform: scale(1); }
  20%  { color: #fff7a0; text-shadow: 0 0 18px rgba(251,191,36,1), 0 0 36px rgba(251,191,36,0.7); transform: scale(1.28); }
  50%  { color: #fbbf24; text-shadow: 0 0 12px rgba(251,191,36,0.9), 0 0 24px rgba(251,191,36,0.5); transform: scale(1.14); }
  75%  { color: #f59e0b; text-shadow: 0 0 8px rgba(245,158,11,0.6); transform: scale(1.06); }
  100% { color: #d97706; text-shadow: none; transform: scale(1); }
}
.src-stat-xp.xp-glow {
  animation: xpGlowPulse 1.8s ease forwards;
}
@keyframes xpFloatUp {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  60%  { opacity: 1; transform: translateX(-50%) translateY(-44px) scale(1.2); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-72px) scale(0.85); }
}
.src-stat-label {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: 0.02em;
}
.src-sub-row {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 8px;
  padding: 6px 4px 8px;
  border-top: 1px solid rgba(0,0,0,0.06);
  margin-bottom: 8px;
}
.src-sub-row-vertical {
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 6px;
}
.src-sub-item {
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.src-sub-item-full {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.src-sub-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.src-sub-label {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--text-sub);
  white-space: nowrap;
}
.src-sub-val {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--navy);
}
.src-sub-divider {
  width: 1px;
  height: 18px;
  background: rgba(0,0,0,0.1);
  flex-shrink: 0;
}
.src-bar-wrap { margin-bottom: 8px; }
.src-bar-bg {
  background: #e2e8f0;
  border-radius: 99px;
  height: 6px;
  min-height: 6px;
  flex-shrink: 0;
  overflow: hidden;
  width: 100%;
}
.src-bar {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--blue), #60a5fa);
  transition: width 0.6s ease;
}
.src-bar-grad {
  background: linear-gradient(90deg, #10b981, #6ee7b7);
}
.src-sub-top-right {
  display: flex; align-items: center; gap: 6px;
}
.src-bonus-btn {
  flex-shrink: 0;
  border: 1.5px solid #d1d5db;
  border-radius: 99px;
  background: #f3f4f6;
  color: #9ca3af;
  font-family: 'Outfit', sans-serif;
  font-size: 0.7rem; font-weight: 800;
  padding: 3px 9px;
  cursor: default;
  transition: all 0.25s;
  white-space: nowrap;
}
.src-bonus-btn.ready {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  border-color: transparent;
  color: white;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(245,158,11,0.4);
  animation: bonusBtnPulse 1.6s ease infinite;
}
.src-bonus-btn.ready:hover { filter: brightness(1.1); }
.src-bonus-btn.claimed {
  background: rgba(16,185,129,0.1);
  border-color: rgba(16,185,129,0.4);
  color: #10b981;
  cursor: default;
  animation: none;
}
@keyframes bonusBtnPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 3px 10px rgba(245,158,11,0.4); }
  50%       { transform: scale(1.06); box-shadow: 0 4px 14px rgba(245,158,11,0.6); }
}
.src-detail-hint {
  font-size: 0.62rem;
  color: var(--text-sub);
  text-align: center;
  cursor: pointer;
  padding: 6px 0 2px;
  transition: color 0.15s;
}
.src-detail-hint:hover { color: var(--blue); }

/* ═══════════════════════════════════════
   学習記録詳細モーダル
═══════════════════════════════════════ */
#studyRecordModal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.52);
  z-index: 1000;
  align-items: flex-end;
  justify-content: center;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
#studyRecordModal.open {
  display: flex;
  animation: menuOverlayIn 0.25s ease;
}
.srm-sheet {
  background: var(--card);
  border-radius: 28px 28px 0 0;
  width: 100%;
  max-width: 480px;
  max-height: 88vh;
  overflow-y: auto;
  padding-bottom: env(safe-area-inset-bottom, 24px);
  animation: menuSheetIn 0.32s cubic-bezier(0.34,1.56,0.64,1);
  overscroll-behavior: contain;
}
.srm-handle {
  width: 44px; height: 5px;
  background: #ddd;
  border-radius: 99px;
  margin: 14px auto 0;
}
.srm-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px 12px;
  border-bottom: 1px solid #f1f5f9;
}
.srm-head-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  flex: 1;
}
.srm-head-badge {
  font-size: 0.62rem;
  font-weight: 700;
  background: linear-gradient(135deg, #16a34a, #4ade80);
  color: white;
  border-radius: 99px;
  padding: 3px 10px;
  white-space: nowrap;
}
.srm-close {
  background: #f1f5f9;
  border: none;
  width: 32px; height: 32px;
  border-radius: 50%;
  font-size: 1rem;
  color: var(--text-sub);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s;
}
.srm-close:hover { background: #e2e8f0; }
.srm-tabs {
  display: flex;
  gap: 6px;
  padding: 12px 20px 0;
}
.srm-tab {
  flex: 1;
  padding: 8px 4px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  background: var(--bg);
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.15s;
}
.srm-tab.active {
  border-color: var(--blue);
  background: var(--blue-light);
  color: var(--blue);
}
.srm-body { padding: 14px 20px 24px; }
.srm-section-label {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.srm-loading {
  text-align: center;
  padding: 24px;
  color: var(--text-sub);
  font-size: 0.85rem;
}
.srm-empty {
  text-align: center;
  padding: 20px;
  color: var(--text-sub);
  font-size: 0.85rem;
  background: var(--bg);
  border-radius: var(--radius-sm);
}
.srm-sub-row { margin-bottom: 12px; }
.srm-sub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}
.srm-sub-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--navy);
}
.srm-sub-stats {
  font-size: 0.72rem;
  color: var(--text-sub);
}
.srm-bar-bg {
  background: #e2e8f0;
  border-radius: 99px;
  height: 7px;
  overflow: hidden;
}
.srm-bar {
  height: 100%;
  border-radius: 99px;
  transition: width 0.5s ease;
}
.srm-weak-quiz-hint {
  text-align: center;
  font-size: 0.78rem;
  color: var(--red);
  font-weight: 700;
  padding: 6px 0 10px;
  letter-spacing: 0.03em;
}
.srm-wrong-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--red-light);
  border-left: 4px solid var(--red);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  padding: 10px 12px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.15s;
}
.srm-wrong-item:hover { background: #fdd; }
.srm-wrong-rank {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 900;
  color: var(--red);
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}
.srm-wrong-info { flex: 1; min-width: 0; }
.srm-wrong-jp {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.srm-wrong-ans {
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--green);
}
.srm-wrong-sub {
  font-size: 0.65rem;
  color: var(--text-sub);
  margin-top: 2px;
}
.srm-wrong-count {
  font-family: 'Outfit', sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--red);
  flex-shrink: 0;
}

/* =============================================
   アイコンプレビューモーダル
============================================= */
.icon-preview-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.2s;
}
.icon-preview-overlay--visible { opacity: 1; }
.icon-preview-box {
  background: var(--navy);
  border-radius: 24px;
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  transform: scale(0.82);
  transition: transform 0.28s cubic-bezier(0.34,1.2,0.64,1);
}
.icon-preview-overlay--visible .icon-preview-box { transform: scale(1); }
.icon-preview-img {
  width: 180px;
  height: 180px;
  border-radius: 24px;
  object-fit: cover;
}
.icon-preview-emoji {
  font-size: 96px;
  line-height: 1;
}
.icon-preview-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  font-family: 'Outfit', sans-serif;
}

/* =============================================
   ローディングオーバーレイ
   認証状態確定までコンテンツを隠す
   ============================================= */
#loadingOverlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.3s ease;
}
#loadingOverlay.hidden {
  opacity: 0;
  pointer-events: none;
}
.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--blue-light);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: loadingSpin 0.8s linear infinite;
}
@keyframes loadingSpin { to { transform: rotate(360deg); } }
.loading-text {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--text-sub);
  font-family: 'Noto Sans JP', sans-serif;
}

/* =============================================
   クイズ画面 — モバイルキーボード対応
   ============================================= */

/*
 * クイズ画面をフルスクリーン固定コンテナにする
 * display: block にすることで position: sticky が確実に動作する
 * （flex コンテナ内では sticky が Safari/Android で不安定なため）
 */
#quizScreen.active {
  position: fixed !important;
  top: 0; left: 0; right: 0; bottom: 0;
  /* 100dvh: キーボード表示時に縮む動的ビューポート高さ */
  height: 100dvh;
  height: 100vh; /* fallback */
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  background: var(--bg);
  display: block !important;
  z-index: 1;
}

/* スティッキーヘッダー
 * display:block の overflow-y:auto コンテナ内で確実に sticky 動作する
 * -webkit-sticky: iOS Safari 13 以前の互換フォールバック */
.quiz-sticky-header {
  position: -webkit-sticky; /* iOS Safari 互換 */
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card);
  /* 背後コンテンツが透けないよう不透明にする */
  box-shadow: 0 2px 12px rgba(20,146,204,0.13);
}

/* 問題 | スコア | のこり時間 の横並び行 */
.quiz-hud-row {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 9px 16px;
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
}
.hud-item {
  flex: 1;
  text-align: center;
}
.hud-sep {
  width: 1px;
  height: 24px;
  background: #e2e8f0;
  flex-shrink: 0;
}

/* スマホ：HUD フォントを微縮小してヘッダーを低くする */
@media (max-height: 700px) {
  .quiz-hud-row { padding: 6px 16px; }
  .hud-value    { font-size: 1.1rem !important; }
  .hud-label    { font-size: 0.6rem !important; }
}

/* 細いタイマーバー（ヘッダー下端・常時視界内） */
.timer-bar-slim-bg {
  height: 3px;
  background: #e2e8f0;
  overflow: hidden;
}
.timer-bar-slim {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), #60a5fa);
  transition: width 0.9s linear, background 0.3s;
}
.timer-bar-slim.danger {
  background: linear-gradient(90deg, var(--red), #ff8a80);
}

/* コンテンツエリア */
.quiz-body {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  padding: 12px 16px env(safe-area-inset-bottom, 24px);
}

/*
 * 入力カードにフォーカスが当たったとき、スティッキーヘッダー（約50px）分の
 * 余白を確保してスクロール位置を調整する
 */
.input-card {
  scroll-margin-top: 70px;
}

/* 残り3秒以下：画面端の赤いネオン点滅エフェクト */
@keyframes quizUrgentPulse {
  0%, 100% { box-shadow: inset 0 0 0 0px rgba(232, 96, 76, 0); }
  50%       { box-shadow: inset 0 0 0 6px rgba(232, 96, 76, 0.6); }
}
#quizScreen.quiz-urgent {
  animation: quizUrgentPulse 0.5s ease-in-out infinite;
}

/* ─── フッター（常時表示） ─── */
.legal-links-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 4px 20px;
  border-top: 1px solid #e2e8f0;
  margin-top: 8px;
}
.llb-links {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-wrap: wrap;
  justify-content: center;
}
.legal-links-bar a {
  font-size: 0.72rem;
  color: var(--text-sub);
  text-decoration: none;
  font-family: 'Noto Sans JP', sans-serif;
  transition: color 0.15s;
  white-space: nowrap;
}
.legal-links-bar a:hover { color: var(--blue); }
.llb-sep {
  font-size: 0.62rem;
  color: #cbd5e1;
  user-select: none;
}
.llb-copy {
  font-size: 0.68rem;
  color: var(--text-sub);
  font-family: 'Noto Sans JP', sans-serif;
}

/* ══════════════════════════════════════════════════════════
   メニュー XP バッジ
══════════════════════════════════════════════════════════ */
.menu-xp-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 5px;
}
.menu-xp-val {
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--yellow);
  background: var(--yellow-light);
  border-radius: 99px;
  padding: 2px 8px;
  white-space: nowrap;
}
.menu-xp-exchange-btn {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--blue);
  background: var(--blue-light);
  border: none;
  border-radius: 99px;
  padding: 3px 9px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.menu-xp-exchange-btn:hover { background: #b8dff4; }

/* ══════════════════════════════════════════════════════════
   アイコン交換画面（IconShopScreen）
══════════════════════════════════════════════════════════ */
.icon-shop-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 4px 12px;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: 8px;
}
/* ── ゲスト向け案内バナー ── */
.shop-guest-banner {
  background: #fffbeb;
  border: 1.5px solid #fbbf24;
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 12px;
}
.shop-guest-banner-body {
  display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px;
}
.shop-guest-banner-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 1px; }
.shop-guest-banner-title {
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem; font-weight: 800; color: #92400e; margin-bottom: 3px;
}
.shop-guest-banner-desc {
  font-size: 0.75rem; color: #78350f; line-height: 1.6;
}
.shop-guest-banner-btn {
  display: block; width: 100%;
  background: #f59e0b;
  border: none; border-radius: 99px;
  color: white;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem; font-weight: 800;
  padding: 9px 0;
  cursor: pointer;
  transition: background 0.18s;
}
.shop-guest-banner-btn:hover { background: #d97706; }
.icon-shop-back {
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue);
  cursor: pointer;
  padding: 4px 8px;
}
.icon-shop-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--navy);
}
.icon-shop-xp-bal {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--yellow);
  background: var(--yellow-light);
  border-radius: 99px;
  padding: 4px 12px;
}
/* タブ */
.icon-shop-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.icon-shop-tabs--two .icon-shop-tab {
  flex: 1;
  font-size: 1rem;
  padding: 10px 4px;
}
.icon-shop-tab {
  flex: 1;
  padding: 8px 4px;
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  background: white;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.15s;
}
.icon-shop-tab.active {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}
/* 装備中バナー */
.shop-equipped-row { margin-bottom: 12px; }
.shop-equipped-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-sub);
  background: var(--blue-light);
  border-radius: 8px;
  padding: 6px 12px;
}
.shop-equipped-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}
/* アイコングリッド */
.icon-shop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding-bottom: 16px;
}
.shop-icon-card {
  position: relative;
  overflow: hidden;
  background: white;
  border: 1.5px solid #e9ecef;
  border-radius: 14px;
  padding: 12px 8px 10px;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}
/* 所有済み：温かみのある金縁 */
.shop-icon-card--owned {
  background: linear-gradient(145deg, #fffef5, #fff8e7);
  border-color: #fbbf24;
}
/* 装備中：青グロー */
.shop-icon-card--equipped,
.shop-icon-card.shop-icon-equipped {
  background: linear-gradient(145deg, #eff6ff, #dbeafe);
  border-color: var(--blue);
  box-shadow: 0 0 0 2.5px rgba(20,146,204,0.22), 0 4px 14px rgba(20,146,204,0.14);
}
/* 購入可能：パルス枠 */
@keyframes shopAffordPulse {
  0%, 100% { border-color: #bfdbfe; box-shadow: 0 0 0 0 rgba(20,146,204,0); }
  50%       { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(20,146,204,0.14); }
}
.shop-icon-card--affordable {
  animation: shopAffordPulse 2.2s ease-in-out infinite;
}
/* ロック：薄暗く */
.shop-icon-card--locked {
  background: #f8fafc;
}
/* 装備中リボン（斜め帯） */
.shop-icon-ribbon {
  position: absolute;
  top: 11px;
  left: -20px;
  width: 76px;
  background: var(--blue);
  color: white;
  font-size: 0.52rem;
  font-weight: 900;
  text-align: center;
  padding: 3px 0;
  transform: rotate(-45deg);
  letter-spacing: 0.04em;
  pointer-events: none;
}
/* 所有済みバッジ（右上） */
.shop-icon-owned-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 17px;
  height: 17px;
  background: #22c55e;
  color: white;
  border-radius: 50%;
  font-size: 0.6rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 4px rgba(0,0,0,0.18);
}
/* 絵文字ラッパー */
.shop-icon-emoji-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 4px;
}
.shop-icon-emoji {
  font-size: 2rem;
  line-height: 1;
  display: block;
}
.shop-icon-emoji--locked {
  filter: grayscale(1) opacity(0.35);
}
.shop-icon-lock-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  pointer-events: none;
}
/* コレクション進捗バー */
.shop-collection-bar {
  margin-top: 8px;
  padding: 7px 10px;
  background: #f8fafc;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
}
.shop-collection-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-sub);
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
}
.shop-collection-label span { color: var(--blue); font-weight: 900; }
.shop-collection-track {
  height: 6px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
}
.shop-collection-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #38bdf8);
  border-radius: 99px;
  transition: width 0.7s cubic-bezier(0.4,0,0.2,1);
}
/* ============================================================
   マイコレクション画面
   ============================================================ */
.collection-summary {
  padding: 12px 16px 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: center;
}
.collection-summary-equipped {
  font-size: 0.85rem;
  color: var(--text-muted, #6b7280);
  width: 100%;
}
.collection-summary-count {
  font-size: 0.85rem;
  color: var(--text-muted, #6b7280);
}
.collection-summary-count strong {
  color: var(--blue, #1492CC);
  font-weight: 900;
}
.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 12px 16px 24px;
}
.col-icon-card {
  position: relative;
  background: #fff;
  border-radius: 14px;
  padding: 12px 8px 10px;
  text-align: center;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  justify-content: space-between;
  min-height: 118px;
}
.col-icon-card--unknown {
  background: #edf0f4;
  border: 1.5px dashed #d1d5db;
}
.col-unknown-seal {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 900;
  color: #c1c7d0;
}
.col-btn-placeholder {
  height: 26px;
  width: 100%;
}
.col-crown {
  position: absolute;
  top: -8px;
  right: -4px;
  font-size: 1.1rem;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}
.col-icon-emoji {
  font-size: 2rem;
  line-height: 1;
}
.col-icon-emoji--hidden {
  filter: grayscale(1) opacity(0.2);
}
.col-unknown {
  font-size: 1.8rem;
  color: #d1d5db;
  font-weight: 900;
  position: absolute;
  top: 22px;
}
.col-rare-hidden {
  width: 56px;
  height: 56px;
  background: #e5e7eb;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #9ca3af;
  font-weight: 900;
}
.col-rare-img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}
.col-icon-name {
  font-size: 0.72rem;
  color: #374151;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.col-equip-btn {
  font-size: 0.7rem;
  padding: 4px 8px;
  border-radius: 99px;
  margin-top: 2px;
}
.col-cost-hint {
  font-size: 0.68rem;
  color: #9ca3af;
  margin-top: 2px;
}

/* GET! / 装備フラッシュ */
@keyframes shopGetFlash {
  0%   { transform: scale(1);    box-shadow: 0 0 0 0   rgba(251,191,36,0); }
  25%  { transform: scale(1.10); box-shadow: 0 0 0 8px rgba(251,191,36,0.45); }
  70%  { transform: scale(1.04); box-shadow: 0 0 0 4px rgba(251,191,36,0.2); }
  100% { transform: scale(1);    box-shadow: 0 0 0 0   rgba(251,191,36,0); }
}
@keyframes shopEquipFlash {
  0%   { transform: scale(1);    box-shadow: 0 0 0 0   rgba(20,146,204,0); }
  25%  { transform: scale(1.08); box-shadow: 0 0 0 7px rgba(20,146,204,0.4); }
  70%  { transform: scale(1.03); box-shadow: 0 0 0 3px rgba(20,146,204,0.18); }
  100% { transform: scale(1);    box-shadow: 0 0 0 0   rgba(20,146,204,0); }
}
.shop-icon-just-bought   { animation: shopGetFlash   0.85s ease forwards; }
.shop-icon-just-equipped { animation: shopEquipFlash 0.85s ease forwards; }
.shop-icon-name {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 7px;
}
/* ショップボタン */
.shop-btn {
  width: 100%;
  border: none;
  border-radius: 8px;
  padding: 5px 4px;
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}
.shop-btn-buy     { background: var(--blue); color: white; }
.shop-btn-equip   { background: var(--green); color: white; }
.shop-btn-equipped { background: var(--blue-light); color: var(--blue); cursor: default; }
.shop-btn-locked  { background: #f1f5f9; color: #aaa; cursor: not-allowed; }
.shop-btn:disabled { opacity: 0.6; }
/* レベル限定タブ */
.shop-level-desc {
  font-size: 0.72rem;
  color: var(--text-sub);
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.6;
}
.shop-level-loading,
.shop-level-empty {
  text-align: center;
  padding: 32px 0;
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.7;
}
.shop-level-icon-img {
  width: 52px;
  height: 52px;
  object-fit: contain;
  margin-bottom: 6px;
  border-radius: 10px;
}
.level-icon-req-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  font-size: 0.6rem;
  font-weight: 800;
  background: var(--blue);
  color: white;
  border-radius: 99px;
  padding: 2px 6px;
}
.level-icon-locked .shop-level-icon-img { opacity: 0.35; filter: grayscale(0.8); }
.level-icon-locked .level-icon-req-badge { background: #94a3b8; }
/* アップロードカード */
.icon-upload-card {
  background: white;
  border-radius: 16px;
  padding: 20px;
  border: 1.5px solid #e9ecef;
}
.icon-upload-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 16px;
}
.icon-upload-area {
  border: 2px dashed #d1d5db;
  border-radius: 14px;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s;
  margin-bottom: 8px;
}
.icon-upload-area:hover { border-color: var(--blue); }
.icon-upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 20px;
}
.icon-upload-img-preview {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}
.icon-upload-note {
  font-size: 0.72rem;
  color: var(--text-sub);
  margin-bottom: 4px;
}
.icon-upload-status {
  font-size: 0.82rem;
  font-weight: 700;
  min-height: 1.2em;
  margin-top: 4px;
}

/* ══════════════════════════════════════════════════════════
   LP ランキングチャレンジ
══════════════════════════════════════════════════════════ */

/* 青い実績バー */
.lp-stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--blue);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  margin-bottom: 16px;
}
.lp-stats-item {
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: white;
  white-space: nowrap;
}
.lp-stats-sep {
  color: rgba(255,255,255,0.45);
  margin: 0 10px;
  font-size: 0.75rem;
}

/* チャレンジカード intro */
.lp-challenge-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
  text-align: center;
}
.lp-challenge-desc {
  font-size: 0.88rem;
  color: var(--text-sub);
  text-align: center;
  line-height: 1.75;
  margin-bottom: 16px;
}

/* クイズ プログレスバー */
.lp-quiz-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.lp-quiz-progress-bar {
  flex: 1;
  height: 6px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
}
.lp-quiz-progress-fill {
  height: 100%;
  background: var(--blue);
  border-radius: 99px;
  transition: width 0.35s ease;
}
.lp-quiz-progress-text {
  font-family: 'Outfit', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-sub);
  white-space: nowrap;
}

/* 結果グリッド（スコア ｜ ランキング） */
.lp-result-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 10px;
}
.lp-result-cell {
  flex: 1;
  text-align: center;
}
.lp-result-sep {
  width: 1px;
  height: 52px;
  background: rgba(255,255,255,0.2);
  margin: 0 16px;
  flex-shrink: 0;
}
.lp-result-rank-num {
  font-family: 'Outfit', sans-serif;
  font-size: 2.8rem;
  font-weight: 900;
  color: #fbbf24;
  line-height: 1;
}

/* 結果エリア */
.lp-result-header {
  background: var(--navy);
  border-radius: var(--radius-sm);
  padding: 22px 16px;
  text-align: center;
  margin-bottom: 16px;
}
.lp-result-emoji {
  font-size: 2.4rem;
  margin-bottom: 4px;
}
.lp-result-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}
.lp-result-score {
  font-family: 'Outfit', sans-serif;
  font-size: 2.8rem;
  font-weight: 900;
  color: #60a5fa;
  line-height: 1;
  margin-bottom: 10px;
}
.lp-result-ranking {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.12);
  border-radius: 99px;
  padding: 4px 14px;
  display: inline-block;
}
.lp-result-continue {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 14px;
}

/* LP クイズ用インラインキーボード */
.lp-kbd { display: flex; flex-direction: column; gap: 5px; padding: 8px 0 2px; }
.lp-kbd-row { display: flex; justify-content: center; gap: 4px; }
.lp-kbd-key {
  flex: 1; max-width: 34px; height: 44px;
  border: none; border-radius: 8px;
  background: var(--card);
  box-shadow: 0 2px 6px rgba(20,146,204,0.10);
  font-family: 'Outfit', sans-serif; font-size: 1rem; font-weight: 700;
  color: var(--navy); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation; user-select: none;
}
.lp-kbd-key:active { background: var(--blue-light); outline: 2px solid var(--blue); }
.lp-kbd-key-wide {
  flex: 1.8 !important; max-width: 58px !important;
  background: var(--card2, #f1f5f9) !important;
  font-size: 0.85rem !important;
}
.lp-kbd-key-enter {
  flex: 3 !important; max-width: none !important;
  background: var(--blue) !important; color: white !important;
  font-size: 0.95rem !important;
}

/* ══════════════════════════════════════════════════════════
   カルーセルモーダル（アイコン購入）
══════════════════════════════════════════════════════════ */
.icon-carousel-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}
.icon-carousel-overlay--visible { opacity: 1; }
.icon-carousel-modal {
  background: #fff;
  border-radius: 28px;
  padding: 28px 24px 32px;
  width: 88%;
  max-width: 340px;
  text-align: center;
  position: relative;
  transform: scale(0.88);
  transition: transform 0.28s cubic-bezier(0.34, 1.2, 0.64, 1);
}
.icon-carousel-overlay--visible .icon-carousel-modal { transform: scale(1); }
.carousel-close-btn {
  position: absolute;
  top: 14px;
  right: 16px;
  background: #f1f5f9;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1rem;
  cursor: pointer;
  color: #6b7280;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.carousel-counter {
  font-size: 0.72rem;
  color: #9ca3af;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.carousel-nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
}
.carousel-nav-btn {
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--navy);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, transform 0.1s;
  line-height: 1;
}
.carousel-nav-btn:active { transform: scale(0.92); background: #e2e8f0; }
.carousel-icon-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 110px;
}
.carousel-icon-emoji {
  font-size: 5rem;
  line-height: 1;
  display: block;
  transition: transform 0.15s;
}
.carousel-icon-emoji--unowned {
  filter: grayscale(1) opacity(0.25);
}
.carousel-icon-img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
}
.carousel-icon-img--unowned {
  filter: grayscale(1) opacity(0.3);
}
.carousel-icon-name {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 6px;
}
.carousel-icon-meta {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 18px;
  min-height: 24px;
}
.carousel-cost { font-weight: 700; color: var(--blue); }
.carousel-xp-shortage {
  display: block;
  color: #ef4444;
  font-size: 0.78rem;
  margin-top: 2px;
}
.carousel-owned-badge {
  display: inline-block;
  background: #d1fae5;
  color: #059669;
  border-radius: 99px;
  padding: 2px 10px;
  font-size: 0.78rem;
  font-weight: 700;
}
.carousel-action-wrap { padding: 0 4px; }
.carousel-action-btn {
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 13px 16px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}
.carousel-action-btn:active { transform: scale(0.97); }
.carousel-action-btn--buy     { background: var(--blue);       color: white; }
.carousel-action-btn--equip   { background: var(--green);      color: white; }
.carousel-action-btn--equipped { background: var(--blue-light); color: var(--blue); cursor: default; }
.carousel-action-btn--locked  { background: #f1f5f9;           color: #9ca3af; cursor: not-allowed; }
.carousel-action-btn:disabled { opacity: 0.7; }

/* ── スパークルパーティクル ── */
@keyframes sparkleOut {
  0%   { transform: translate(-50%, -50%) translate(0, 0) scale(1);              opacity: 1; }
  100% { transform: translate(-50%, -50%) translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}
.sparkle-particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: sparkleOut 0.7s ease-out forwards;
}

/* ── アイコンスピン ── */
@keyframes carouselIconSpin {
  0%   { transform: scale(1)    rotate(0deg); }
  35%  { transform: scale(1.35) rotate(180deg); }
  100% { transform: scale(1)    rotate(360deg); }
}
.carousel-icon-spin {
  animation: carouselIconSpin 0.65s cubic-bezier(0.34, 1.2, 0.64, 1) forwards;
}

/* ── ゲット！テキスト ── */
@keyframes getTextPop {
  0%   { transform: translate(-50%, -50%) scale(0.4); opacity: 0; }
  40%  { transform: translate(-50%, -80%) scale(1.15); opacity: 1; }
  70%  { transform: translate(-50%, -90%) scale(1);   opacity: 1; }
  100% { transform: translate(-50%, -110%) scale(0.9); opacity: 0; }
}
.carousel-get-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform-origin: center;
  font-size: 1.6rem;
  font-weight: 900;
  color: #f59e0b;
  text-shadow: 0 2px 8px rgba(245, 158, 11, 0.4);
  pointer-events: none;
  white-space: nowrap;
  z-index: 10;
  animation: getTextPop 1.1s ease forwards;
}

/* ── コレクション画面：所持済みカード ── */
.col-icon-card--owned {
  background: linear-gradient(145deg, #fffef5, #fff8e7);
  border: 1.5px solid #fbbf24;
}
.col-icon-name--muted {
  color: #9ca3af;
}

/* ── ブログ：アプリ訴求画像 ── */
.app-image {
  max-width: 480px;
  width: 100%;
  margin: 2rem auto;
}

.app-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  display: block;
}

.app-caption {
  text-align: center;
  font-size: 0.9rem;
  color: #666;
  margin-top: 0.75rem;
  line-height: 1.6;
}

@media (max-width: 600px) {
  .app-image {
    max-width: 100%;
    margin: 1.5rem 0;
  }

  .app-caption {
    font-size: 0.85rem;
    text-align: left;
  }
}

/* ══════════════════════════════════════════════════════════
   カスタムキーボードオーバーレイ（タッチデバイス専用）
   ══════════════════════════════════════════════════════════ */
#customKbOverlay {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(245, 240, 232, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1.5px solid rgba(20, 146, 204, 0.18);
  box-shadow: 0 -4px 24px rgba(70, 61, 58, 0.14);
  padding: 6px 6px 0;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  z-index: 50;
}

/* ── トグルバー（タップで開閉） ── */
.ckb-toggle-bar {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.ckb-toggle-bar:active { background: rgba(0,0,0,0.05); }
.ckb-handle {
  width: 36px; height: 4px;
  background: rgba(70, 61, 58, 0.22);
  border-radius: 2px;
}
.ckb-toggle-hint {
  position: absolute;
  right: 10px;
  font-size: 10px;
  color: var(--text-sub);
  font-family: 'Noto Sans JP', sans-serif;
  pointer-events: none;
}

/* ── キーボード本体（開閉対象） ── */
.ckb-body {
  overflow: hidden;
  max-height: 400px;
  transition: max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}
.ckb-body.ckb-collapsed { max-height: 0; }

/* ── グリッドエリア＋右列の横並び ── */
.ckb-inner {
  display: flex;
  gap: 5px;
  padding-bottom: 4px;
}
.ckb-grid-area { flex: 1; min-width: 0; }

/* ── 右列: ⌫ + 確定 ── */
.ckb-right-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 52px;
  flex-shrink: 0;
}
.ckb-back-r {
  flex: 1;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--card2);
  color: var(--navy);
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.ckb-back-r:active { opacity: 0.7; }
.ckb-enter-r {
  flex: 1;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--blue);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.6;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 3px 10px rgba(20, 146, 204, 0.30);
}
.ckb-enter-r:active { opacity: 0.85; }

/* ── フッター: モード切替 + 記号 + 中断 ── */
.ckb-footer {
  display: flex;
  align-items: center;
  gap: 5px;
  padding-bottom: 4px;
}
.ckb-quit-btn {
  background: transparent;
  color: var(--text-sub);
  border: none;
  border-radius: var(--radius-sm);
  padding: 6px 6px;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  line-height: 1;
  touch-action: manipulation;
  margin-left: auto;
  white-space: nowrap;
}
.ckb-quit-btn:active { opacity: 0.7; }

/* モード切替ピル */
.ckb-mode-toggle {
  display: flex;
  background: var(--card2);
  border-radius: 20px;
  padding: 2px;
  gap: 2px;
  flex-shrink: 0;
}
.ckb-toggle-btn {
  border: none;
  border-radius: 16px;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  background: transparent;
  color: var(--text-sub);
  transition: background 0.15s, color 0.15s;
  line-height: 1;
  touch-action: manipulation;
}
.ckb-toggle-btn.active {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(20, 146, 204, 0.32);
}

/* ── QWERTY キーグリッド ── */
.ckb-grid-en {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ckb-row {
  display: flex;
  justify-content: center;
  gap: 4px;
}
/* QWERTY 文字キー（max-width 制約なし・幅を画面に合わせる） */
.ckb-key-en { max-width: none; }
/* ⇧ と ⌫（1.5倍幅・薄背景） */
.ckb-key-en-wide {
  flex: 1.5 !important;
  max-width: none !important;
  background: var(--card2) !important;
}
/* QWERTY 最下段（あ / 確定） */
.ckb-en-bottom-row {
  display: flex;
  gap: 4px;
}
/* ⇧ アクティブ（大文字 ON） */
.ckb-shift-active {
  background: var(--blue) !important;
  color: #fff !important;
}
.ckb-key {
  position: relative;
  flex: 1;
  max-width: 56px;
  height: 50px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--card);
  box-shadow: 0 2px 6px rgba(20, 146, 204, 0.10);
  touch-action: none;
  user-select: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  transition: background 0.08s;
  -webkit-tap-highlight-color: transparent;
}
.ckb-key.ckb-active {
  background: var(--blue-light);
  outline: 2px solid var(--blue);
  z-index: 52;
}

/* ── フリックポップアップ ── */
.ckb-popup {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 55;
  overflow: visible;
}
.ckb-choice {
  position: absolute;
  width: 28px; height: 28px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
  z-index: 60;
}
.ckb-key.ckb-active .ckb-choice { display: flex; }
.ckb-choice.empty { display: none !important; }
.ckb-choice.center { left: 50%; top: 50%; transform: translate(-50%, -50%); }
.ckb-choice.up     { left: 50%; top: -4px; transform: translateX(-50%); }
.ckb-choice.down   { left: 50%; bottom: -4px; transform: translateX(-50%); }
.ckb-choice.left   { left: -4px; top: 50%; transform: translateY(-50%); }
.ckb-choice.right  { right: -4px; top: 50%; transform: translateY(-50%); }
.ckb-choice.selected { background: var(--red); }
.ckb-choice.center.selected { transform: translate(-50%, -50%) scale(1.15); }
.ckb-choice.up.selected     { transform: translateX(-50%) scale(1.15); }
.ckb-choice.down.selected   { transform: translateX(-50%) scale(1.15); }
.ckb-choice.left.selected   { transform: translateY(-50%) scale(1.15); }
.ckb-choice.right.selected  { transform: translateY(-50%) scale(1.15); }

/* ── ひらがなグリッド ── */
.ckb-grid-ja {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(4, 54px);
  gap: 5px;
}
.ckb-key-ja {
  height: auto;
  align-self: stretch;
  max-width: none;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 17px;
  flex-direction: column;
  gap: 2px;
}
.ckb-key-sub {
  font-size: 8px;
  color: var(--text-sub);
  pointer-events: none;
  display: block;
  line-height: 1;
}

/* ── 共有フリックポップアップ（指の上に浮く・position:fixed）── */
#ckbFlickPopup {
  position: fixed;
  width: 104px;
  height: 88px;
  pointer-events: none;
  z-index: 200;
  display: none;
}
.ckb-fp {
  position: absolute;
  width: 30px; height: 30px;
  border-radius: 8px;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  box-shadow: 0 2px 8px rgba(0,0,0,0.22);
}
.ckb-fp-center { left:50%; top:50%; transform:translate(-50%,-50%); }
.ckb-fp-up     { left:50%; top:4px; transform:translateX(-50%); }
.ckb-fp-down   { left:50%; bottom:4px; transform:translateX(-50%); }
.ckb-fp-left   { left:4px; top:50%; transform:translateY(-50%); }
.ckb-fp-right  { right:4px; top:50%; transform:translateY(-50%); }
.ckb-fp.ckb-fp-sel { background: var(--red); transform-origin: center; }
.ckb-fp-center.ckb-fp-sel { transform:translate(-50%,-50%) scale(1.15); }
.ckb-fp-up.ckb-fp-sel     { transform:translateX(-50%) scale(1.15); }
.ckb-fp-down.ckb-fp-sel   { transform:translateX(-50%) scale(1.15); }
.ckb-fp-left.ckb-fp-sel   { transform:translateY(-50%) scale(1.15); }
.ckb-fp-right.ckb-fp-sel  { transform:translateY(-50%) scale(1.15); }

/* アクティブな入力カードのハイライト */
.ckb-input-active {
  border-color: var(--blue) !important;
  box-shadow: 0 0 0 3px rgba(20, 146, 204, 0.18) !important;
}

/* ' と - などのシンボルボタン（フッター内） */
.ckb-action-sym {
  height: 34px;
  min-width: 38px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--card2);
  color: var(--navy);
  font-family: 'Outfit', sans-serif;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  flex-shrink: 0;
}
.ckb-action-sym:active { opacity: 0.72; }

/* ── 英語フリックグリッド（5列4行・自己完結型） ── */
.ckb-grid-enf {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(4, 54px);
  gap: 5px;
}
.ckb-key-enf {
  max-width: none;
  height: auto;
  align-self: stretch;
  font-family: 'Outfit', sans-serif;
  font-size: 15px;
  flex-direction: column;
  gap: 2px;
}
/* enf 左右端のサイドボタン共通 */
.ckb-enf-side {
  background: var(--card2) !important;
  font-size: 12px;
  font-weight: 700;
  white-space: pre-line;
  line-height: 1.4;
}
/* enf 確定ボタン */
.ckb-enf-enter {
  background: var(--blue) !important;
  color: #fff !important;
  box-shadow: 0 3px 10px rgba(20, 146, 204, 0.30);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
}
/* Aa ボタンがアクティブ（大文字）のとき */
.ckb-case-active {
  background: var(--blue) !important;
  color: #fff !important;
}
.ckb-key-num {
  position: absolute;
  top: 3px;
  right: 5px;
  font-size: 9px;
  font-weight: 600;
  color: var(--text-sub);
  line-height: 1;
}

/* ═══════════════════════════════════════════════
   アイコンフロートカード（カードから中央へ展開）
   ═══════════════════════════════════════════════ */
.icon-float-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  z-index: 400;
  pointer-events: none;
  transition: background 0.3s ease;
}
.icon-float-overlay.visible {
  background: rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  pointer-events: all;
}

.icon-float-card {
  position: fixed;
  z-index: 401;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.22);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition:
    left          0.42s cubic-bezier(0.22, 1.3, 0.56, 1),
    top           0.42s cubic-bezier(0.22, 1.3, 0.56, 1),
    width         0.42s cubic-bezier(0.22, 1.3, 0.56, 1),
    height        0.42s cubic-bezier(0.22, 1.3, 0.56, 1),
    border-radius 0.42s ease,
    opacity       0.2s ease;
}
.icon-float-card.active { pointer-events: all; }

.icon-float-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 24px 24px;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.22s ease, transform 0.25s cubic-bezier(0.34, 1.4, 0.64, 1);
  width: 100%;
}
.icon-float-card.show-content .icon-float-inner {
  opacity: 1;
  transform: scale(1);
}

.icon-float-big-emoji {
  font-size: 5rem;
  line-height: 1;
  position: relative;
}
.icon-float-big-emoji--unowned {
  filter: grayscale(1) opacity(0.25);
}
.icon-float-big-img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
}
.icon-float-big-img--unowned {
  filter: grayscale(1) opacity(0.3);
}
.icon-float-name {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--navy);
  text-align: center;
}
.icon-float-meta {
  font-size: 0.9rem;
  color: var(--text-sub);
  text-align: center;
  line-height: 1.6;
  min-height: 24px;
}
.icon-float-owned-badge {
  display: inline-block;
  background: #d1fae5;
  color: #059669;
  border-radius: 99px;
  padding: 2px 10px;
  font-size: 0.78rem;
  font-weight: 700;
}
.icon-float-xp-shortage {
  display: block;
  color: #ef4444;
  font-size: 0.78rem;
  margin-top: 2px;
}
.icon-float-cost { font-weight: 700; color: var(--blue); }
.icon-float-btn-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
  width: 100%;
}
.icon-float-btn-action {
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 13px 16px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  font-family: inherit;
}
.icon-float-btn-action:active { transform: scale(0.97); }
.icon-float-btn-action--buy     { background: var(--blue);       color: white; }
.icon-float-btn-action--equip   { background: var(--green);      color: white; }
.icon-float-btn-action--owned   { background: var(--blue-light); color: var(--blue); cursor: default; }
.icon-float-btn-action--locked  { background: #f1f5f9;           color: #9ca3af; cursor: not-allowed; }
.icon-float-btn-action:disabled { opacity: 0.7; }
.icon-float-btn-close {
  width: 100%;
  border: 1.5px solid #e2e8f0;
  border-radius: 12px;
  padding: 11px 16px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-sub);
  background: transparent;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}
.icon-float-btn-close:hover { background: #f8fafc; }


/* ─── ランキング固定ルールカード ─── */
.ranking-rules-card {
  background: #fff3e0;
  border: 1.5px solid #f5c07a;
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 12px;
}
.ranking-rules-label {
  font-size: 0.72rem;
  font-weight: 800;
  color: #b45309;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.ranking-rules-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.ranking-rule-chip {
  background: #fff;
  border: 1.5px solid #f5c07a;
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #78350f;
  white-space: nowrap;
}

/* ─── 難易度カード ─── */
.difficulty-card {
  background: #e8f8f2;
  border: 1.5px solid #a8e6ce;
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 12px;
}
.difficulty-card-label {
  font-size: 0.72rem;
  font-weight: 800;
  color: #2a7a54;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.difficulty-new-badge {
  background: #2a7a54;
  color: white;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 6px;
  letter-spacing: 0.05em;
}
.difficulty-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
.diff-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 10px 6px;
  font-size: 0.88rem;
  line-height: 1.3;
  text-align: center;
}
.diff-sub {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-sub);
  display: block;
}
.diff-btn.selected .diff-sub {
  color: var(--blue);
}

/* ─── 詳細設定アコーディオン ─── */
.setting-details {
  margin-bottom: 12px;
}
.setting-details-summary {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-sub);
  cursor: pointer;
  padding: 10px 4px;
  list-style: none;
  user-select: none;
}
.setting-details-summary::-webkit-details-marker { display: none; }
.setting-details[open] .setting-details-summary {
  color: var(--blue);
}
.setting-details-hint {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--blue);
  margin-left: 4px;
  opacity: 0.85;
}
.setting-details[open] .setting-details-hint {
  display: none;
}

/* ─── Hard モード XP バッジ ─── */
.diff-xp-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: #f59e0b;
  color: white;
  font-size: 0.6rem;
  font-weight: 800;
  padding: 2px 5px;
  border-radius: 6px;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

/* ─── PC 中断ボタン ─── */
.pc-quit-btn {
  background: none;
  border: 1.5px solid #e2e8f0;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-sub);
  cursor: pointer;
  padding: 4px 10px;
  margin-left: 8px;
  font-family: inherit;
  opacity: 0.75;
  transition: opacity 0.15s;
  white-space: nowrap;
  align-self: center;
}

/* ── 同意確認シート ─────────────────────────────────── */
#consentSheet {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1100;
  align-items: flex-end;
  justify-content: center;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
#consentSheet.show {
  display: flex;
  animation: menuOverlayIn 0.2s ease;
}
.consent-box {
  background: var(--card);
  border-radius: 24px 24px 0 0;
  width: 100%;
  max-width: 480px;
  padding: 28px 24px calc(28px + env(safe-area-inset-bottom, 0px));
  animation: menuSheetIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.consent-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--navy);
  text-align: center;
  margin: 0 0 16px;
}
.consent-intro {
  font-size: 0.88rem;
  color: var(--text-sub);
  margin: 0 0 8px;
}
.consent-data-list {
  list-style: none;
  padding: 10px 14px;
  margin: 0 0 14px;
  background: var(--bg);
  border-radius: 10px;
}
.consent-data-list li {
  font-size: 0.84rem;
  color: var(--text);
  padding: 3px 0;
}
.consent-data-list li::before {
  content: "✓ ";
  color: var(--blue);
  font-weight: 700;
}
.consent-legal-text {
  font-size: 0.82rem;
  color: var(--text-sub);
  text-align: center;
  line-height: 1.7;
  margin: 0 0 20px;
}
.consent-legal-text a {
  color: var(--blue);
  text-decoration: underline;
}
.btn-consent-agree {
  display: block;
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: var(--blue);
  cursor: pointer;
  margin-bottom: 10px;
  font-family: inherit;
  transition: opacity 0.15s;
}
.btn-consent-agree:active { opacity: 0.8; }
.btn-consent-cancel {
  display: block;
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: none;
  font-size: 0.9rem;
  color: var(--text-sub);
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}
.pc-quit-btn:hover { opacity: 1; background: #f8fafc; }