/* 理財規劃人員互動測驗系統 - 核心樣式表 */
    /* CSS 變數：深色/淺色主題系統 */
    :root {
      --bg-gradient-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
      --bg-gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
      
      --card-bg-light: rgba(255, 255, 255, 0.7);
      --card-bg-dark: rgba(15, 23, 42, 0.6);
      
      --card-border-light: rgba(255, 255, 255, 0.4);
      --card-border-dark: rgba(255, 255, 255, 0.08);
      
      --text-main-light: #1e293b;
      --text-main-dark: #f8fafc;
      
      --text-sub-light: #64748b;
      --text-sub-dark: #94a3b8;
      
      --accent-color: #6366f1; /* Indigo */
      --accent-hover: #4f46e5;
      
      --success-color: #10b981; /* Emerald */
      --error-color: #f43f5e; /* Rose */
      --warning-color: #f59e0b; /* Amber */
      
      --shadow-light: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
      --shadow-dark: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      
      --glass-blur: blur(12px);
    }
    
    
    /* 專業出版級 Markdown 表格排版 (Pro Table) */
    .table-responsive-wrapper {
      width: 100%;
      overflow-x: auto;
      margin: 0.8rem 0;
      border-radius: 10px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.06);
      border: 1px solid var(--card-border);
      -webkit-overflow-scrolling: touch;
    }
    .pro-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.92rem;
      text-align: left;
    }
    .pro-table th {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(139, 92, 246, 0.18));
      color: var(--accent-color);
      font-weight: 700;
      padding: 0.65rem 0.85rem;
      border-bottom: 2px solid rgba(99, 102, 241, 0.3);
      white-space: nowrap;
    }
    .pro-table td {
      padding: 0.6rem 0.85rem;
      border-bottom: 1px solid var(--card-border);
    }
    .pro-table tr:nth-child(even) {
      background: rgba(255, 255, 255, 0.03);
    }
    .pro-table tr:hover {
      background: rgba(99, 102, 241, 0.08);
    }
    
    /* KaTeX 數學公式優化 */
    .katex {
      font-size: 1.05em !important;
    }
    .katex-display {
      margin: 0.6rem 0 !important;
      padding: 0.5rem 0.8rem;
      background: rgba(99, 102, 241, 0.06);
      border-left: 3px solid var(--accent-color);
      border-radius: 6px;
      overflow-x: auto;
      overflow-y: hidden;
    }

    /* 基礎重設與排版 */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      transition: background-color 0.3s ease, border-color 0.3s ease;
    }
    
    body {
      font-family: 'Outfit', 'Noto Sans TC', sans-serif;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      color: var(--text-main);
      overflow-x: hidden;
    }
    
    /* 主題切換設定 */
    body.light-theme {
      background: var(--bg-gradient-light);
      background-attachment: fixed;
      --card-bg: var(--card-bg-light);
      --card-border: var(--card-border-light);
      --text-main: var(--text-main-light);
      --text-sub: var(--text-sub-light);
      --shadow: var(--shadow-light);
    }
    
    body.dark-theme {
      background: var(--bg-gradient-dark);
      background-attachment: fixed;
      --card-bg: var(--card-bg-dark);
      --card-border: var(--card-border-dark);
      --text-main: var(--text-main-dark);
      --text-sub: var(--text-sub-dark);
      --shadow: var(--shadow-dark);
    }
    
    /* 玻璃擬態容器與卡片 */
    .glass-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border-radius: 20px;
      box-shadow: var(--shadow);
      padding: 2.5rem;
      width: 100%;
      max-width: 900px;
      margin: 1.5rem auto;
      animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    /* 外層寬版佈局容器（拉到外層時使用） */
    .outer-layout-container {
      width: 100%;
      max-width: 900px;
      margin: 1.5rem auto;
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .outer-layout-container .glass-card {
      max-width: 100%;
      margin: 0;
    }
    
    /* 動畫定義 */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    /* 頁首與導覽列 */
    header {
      width: 100%;
      padding: 1.2rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      z-index: 10;
      flex-wrap: nowrap;
      gap: 10px;
    }
    
    .logo {
      font-size: 1.4rem;
      font-weight: 800;
      background: linear-gradient(to right, #818cf8, #c084fc);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: 0.5px;
      cursor: pointer;
      white-space: nowrap;
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    
    .theme-toggle-btn {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      color: var(--text-main);
      width: 45px;
      height: 45px;
      border-radius: 50%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow);
      backdrop-filter: var(--glass-blur);
    }
    
    .theme-toggle-btn:hover {
      transform: scale(1.05);
    }
    
    /* 主要內容區域 */
    main {
      flex: 1;
      padding: 0 1.5rem 3rem 1.5rem;
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
    }
    
    /* 歡迎畫面與模式卡片 */
    .welcome-container {
      width: 100%;
      max-width: 1000px;
      margin: 0 auto;
    }
    
    .welcome-title {
      text-align: center;
      margin-bottom: 2.5rem;
    }
    
    .welcome-title h1 {
      font-size: 2.5rem;
      font-weight: 800;
      margin-bottom: 0.5rem;
      background: linear-gradient(to right, #6366f1, #a855f7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    
    .welcome-title p {
      color: var(--text-sub);
      font-size: 1.1rem;
    }
    
    .modes-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }
    
    .mode-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      padding: 2rem;
      cursor: pointer;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 1.2rem;
      box-shadow: var(--shadow);
      backdrop-filter: var(--glass-blur);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    
    .mode-card:hover {
      transform: translateY(-5px);
      border-color: var(--accent-color);
      box-shadow: 0 12px 40px rgba(99, 102, 241, 0.15);
    }
    
    .mode-icon {
      width: 60px;
      height: 60px;
      border-radius: 16px;
      background: rgba(99, 102, 241, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
      color: var(--accent-color);
    }
    
    .mode-card.exam-mode .mode-icon {
      background: rgba(245, 158, 11, 0.15);
      color: var(--warning-color);
    }
    
    .mode-card.notebook-mode .mode-icon {
      background: rgba(16, 185, 129, 0.15);
      color: var(--success-color);
    }
    
    .mode-card h3 {
      font-size: 1.4rem;
      font-weight: 700;
    }
    
    .mode-card p {
      color: var(--text-sub);
      font-size: 0.95rem;
      line-height: 1.5;
      flex: 1;
    }
    
    .mode-btn {
      background: var(--accent-color);
      color: #fff;
      border: none;
      padding: 0.8rem 1.5rem;
      border-radius: 12px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      width: 100%;
      justify-content: center;
    }
    
    .mode-card.exam-mode .mode-btn {
      background: var(--warning-color);
    }
    
    .mode-card.notebook-mode .mode-btn {
      background: var(--success-color);
    }
    
    .mode-card.history-mode .mode-icon {
      background: rgba(139, 92, 246, 0.15);
      color: #8b5cf6;
    }
    
    .mode-card.history-mode .mode-btn {
      background: #8b5cf6;
    }
    
    /* 設定頁面樣式 */
    .setup-container h2 {
      font-size: 1.8rem;
      margin-bottom: 1.5rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 0.7rem;
    }
    
    .form-group {
      margin-bottom: 1.5rem;
    }
    
    .form-group label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 600;
      color: var(--text-sub);
    }
    
    .form-select, .form-input {
      width: 100%;
      padding: 0.9rem 1.2rem;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      background: var(--card-bg);
      color: var(--text-main);
      font-size: 1rem;
      font-family: inherit;
      outline: none;
      cursor: pointer;
    }
    
    .form-select:focus, .form-input:focus {
      border-color: var(--accent-color);
    }
    
    .btn-row {
      display: flex;
      gap: 1rem;
      margin-top: 2rem;
    }
    
    .btn-secondary {
      background: rgba(148, 163, 184, 0.2);
      color: var(--text-main);
      border: 1px solid var(--card-border);
      padding: 0.9rem 1.8rem;
      border-radius: 12px;
      font-weight: 600;
      cursor: pointer;
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }
    
    .btn-secondary:hover {
      background: rgba(148, 163, 184, 0.3);
    }
    
    .btn-primary {
      background: var(--accent-color);
      color: #fff;
      border: none;
      padding: 0.9rem 1.8rem;
      border-radius: 12px;
      font-weight: 600;
      cursor: pointer;
      flex: 2;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }
    
    .btn-primary:hover {
      background: var(--accent-hover);
    }
    
    /* 測驗/答題畫面 */
    .quiz-layout {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }
    
    .quiz-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 1rem;
      border-bottom: 1px solid var(--card-border);
      flex-wrap: wrap;
      gap: 1rem;
    }
    
    .quiz-meta {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    
    .badge {
      background: rgba(99, 102, 241, 0.15);
      color: var(--accent-color);
      padding: 0.4rem 0.8rem;
      border-radius: 8px;
      font-size: 0.85rem;
      font-weight: 600;
    }
    
    .badge.exam-badge {
      background: rgba(245, 158, 11, 0.15);
      color: var(--warning-color);
    }
    
    .timer-display {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--error-color);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    /* 進度條 */
    .progress-container {
      width: 100%;
      height: 8px;
      background: rgba(148, 163, 184, 0.2);
      border-radius: 4px;
      overflow: hidden;
      margin: 0.5rem 0;
    }
    
    .progress-bar {
      height: 100%;
      background: linear-gradient(to right, var(--accent-color), #a855f7);
      width: 0%;
      transition: width 0.3s ease;
    }
    
    .progress-text {
      font-size: 0.9rem;
      color: var(--text-sub);
      text-align: right;
    }
    
    /* 題目卡片本體 */
    .question-section {
      margin: 1.5rem 0;
    }
    
    .question-info {
      font-size: 0.95rem;
      color: var(--text-sub);
      margin-bottom: 0.8rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .star-rating {
      color: var(--warning-color);
      display: flex;
      gap: 0.1rem;
      font-size: 0.85rem;
    }
    
    .question-text {
      font-size: 1.25rem;
      font-weight: 600;
      line-height: 1.6;
      margin-bottom: 1.8rem;
    }
    
    /* 選項樣式 */
    .options-list {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    
    .option-btn {
      width: 100%;
      padding: 1.1rem 1.5rem;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      background: var(--card-bg);
      color: var(--text-main);
      text-align: left;
      font-size: 1.05rem;
      font-family: inherit;
      cursor: pointer;
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      transition: all 0.2s ease;
    }
    
    .option-btn:hover:not(.disabled) {
      border-color: var(--accent-color);
      background: rgba(99, 102, 241, 0.05);
      transform: translateX(4px);
    }
    
    .option-num {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: rgba(148, 163, 184, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
      font-weight: 600;
      flex-shrink: 0;
    }
    
    /* 答題回饋狀態 */
    .option-btn.selected {
      border-color: var(--accent-color);
      background: rgba(99, 102, 241, 0.1);
    }
    
    .option-btn.selected .option-num {
      background: var(--accent-color);
      color: #fff;
    }
    
    .option-btn.correct {
      border-color: var(--success-color);
      background: rgba(16, 185, 129, 0.1);
    }
    
    .option-btn.correct .option-num {
      background: var(--success-color);
      color: #fff;
    }
    
    .option-btn.incorrect {
      border-color: var(--error-color);
      background: rgba(244, 63, 94, 0.1);
    }
    
    .option-btn.incorrect .option-num {
      background: var(--error-color);
      color: #fff;
    }
    
    /* 控制區與面板 */
    .control-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 2rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--card-border);
      gap: 1rem;
      flex-wrap: wrap;
    }
    
    .control-left, .control-right {
      display: flex;
      gap: 0.8rem;
    }
    
    .btn-circle {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      background: var(--card-bg);
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.1rem;
    }
    
    .btn-circle:hover {
      background: rgba(148, 163, 184, 0.2);
    }
    
    .btn-circle.active-bookmark {
      color: var(--warning-color);
      border-color: var(--warning-color);
      background: rgba(245, 158, 11, 0.1);
    }
    
    .btn-normal {
      padding: 0.8rem 1.5rem;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      background: var(--card-bg);
      color: var(--text-main);
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }
    
    .btn-normal:hover:not(:disabled) {
      background: rgba(148, 163, 184, 0.2);
    }
    
    .btn-normal:disabled {
      opacity: 0.5;
      cursor: not-allowed;
    }
    
    .btn-accent {
      background: var(--accent-color);
      color: #fff;
      border: none;
    }
    
    .btn-accent:hover {
      background: var(--accent-hover);
    }
    
    /* 答案解析區域 */
    .analysis-container {
      margin-top: 1.5rem;
      border-radius: 12px;
      overflow: hidden;
      border: 1px dashed var(--card-border);
    }
    
    .analysis-header {
      background: rgba(99, 102, 241, 0.08);
      padding: 1rem 1.5rem;
      font-weight: 700;
      color: var(--accent-color);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      cursor: pointer;
    }
    
    .analysis-body {
      padding: 1.5rem;
      line-height: 1.6;
      color: var(--text-main);
      font-size: 1rem;
      background: rgba(255, 255, 255, 0.02);
    }
    
    /* 模擬考題號快速跳轉抽屜與面板 */
    .jump-panel-toggle {
      position: fixed;
      bottom: 2rem;
      right: 2rem;
      width: 55px;
      height: 55px;
      border-radius: 50%;
      background: var(--accent-color);
      color: #fff;
      border: none;
      cursor: pointer;
      box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      z-index: 99;
    }
    
    .drawer-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.5);
      z-index: 100;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    
    .drawer-overlay.active {
      opacity: 1;
      pointer-events: auto;
    }
    
    .drawer {
      position: fixed;
      top: 0;
      right: -320px;
      width: 320px;
      height: 100vh;
      background: var(--card-bg);
      border-left: 1px solid var(--card-border);
      backdrop-filter: var(--glass-blur);
      box-shadow: var(--shadow);
      z-index: 101;
      padding: 2rem;
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .drawer.active {
      right: 0;
    }
    
    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--card-border);
      padding-bottom: 1rem;
    }
    
    .drawer-header h4 {
      font-size: 1.2rem;
      font-weight: 700;
    }
    
    .drawer-close {
      background: none;
      border: none;
      color: var(--text-main);
      font-size: 1.2rem;
      cursor: pointer;
    }
    
    .grid-container {
      flex: 1;
      overflow-y: auto;
      padding-right: 0.5rem;
    }
    
    .jump-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0.5rem;
    }
    
    .jump-item {
      width: 100%;
      aspect-ratio: 1;
      border-radius: 8px;
      border: 1px solid var(--card-border);
      background: var(--card-bg);
      color: var(--text-main);
      cursor: pointer;
      font-weight: 600;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .jump-item:hover {
      border-color: var(--accent-color);
    }
    
    .jump-item.answered {
      background: rgba(99, 102, 241, 0.15);
      border-color: var(--accent-color);
      color: var(--accent-color);
    }
    
    .jump-item.current {
      outline: 2px solid var(--accent-color);
      outline-offset: 2px;
    }
    
    .jump-item.flagged {
      border: 2px solid var(--warning-color) !important;
      position: relative;
    }
    
    .jump-item.flagged::after {
      content: '🚩';
      position: absolute;
      top: -6px;
      right: -6px;
      font-size: 0.75rem;
    }
    
    /* 模擬考交卷結果 */
    .result-container {
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 1.5rem;
    }
    
    .score-circle {
      width: 180px;
      height: 180px;
      border-radius: 50%;
      border: 8px solid var(--card-border);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      margin: 1rem 0;
      position: relative;
    }
    
    .score-circle.pass {
      border-color: var(--success-color);
    }
    
    .score-circle.fail {
      border-color: var(--error-color);
    }
    
    .score-value {
      font-size: 3rem;
      font-weight: 800;
    }
    
    .score-label {
      font-size: 0.9rem;
      color: var(--text-sub);
    }
    
    .result-status {
      font-size: 1.8rem;
      font-weight: 700;
    }
    
    .result-status.pass {
      color: var(--success-color);
    }
    
    .result-status.fail {
      color: var(--error-color);
    }
    
    .report-card-list {
      width: 100%;
      text-align: left;
      margin-top: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    
    .report-item {
      border: 1px solid var(--card-border);
      border-radius: 12px;
      padding: 1rem 1.5rem;
      cursor: pointer;
    }
    
    .report-item-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .report-item-title {
      font-weight: 600;
    }
    
    .report-item-status {
      font-weight: 700;
    }
    
    .report-item-status.correct {
      color: var(--success-color);
    }
    
    .report-item-status.incorrect {
      color: var(--error-color);
    }
    
    .report-item-details {
      margin-top: 1rem;
      padding-top: 1rem;
      border-top: 1px dashed var(--card-border);
      display: none;
    }
    
    .report-item.active .report-item-details {
      display: block;
    }
    
    /* 錯題本與收藏本樣式 */
    .tab-header {
      display: flex;
      border-bottom: 1px solid var(--card-border);
      margin-bottom: 1.5rem;
    }
    
    .tab-btn {
      background: none;
      border: none;
      color: var(--text-sub);
      padding: 1rem 2rem;
      font-size: 1.1rem;
      font-weight: 600;
      cursor: pointer;
      position: relative;
    }
    
    .tab-btn.active {
      color: var(--accent-color);
    }
    
    .tab-btn.active::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--accent-color);
      border-radius: 3px 3px 0 0;
    }
    
    .empty-state {
      text-align: center;
      padding: 3rem 0;
      color: var(--text-sub);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 1rem;
    }
    
    .empty-state i {
      font-size: 3rem;
      opacity: 0.5;
    }
    
    .wrong-list {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    
    .wrong-item-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border-radius: 16px;
      padding: 1.8rem;
      box-shadow: var(--shadow);
      transition: transform 0.2s ease, border-color 0.2s ease;
    }
    
    .wrong-item-card:hover {
      border-color: var(--accent-color);
      transform: translateY(-2px);
    }
    
    .wrong-item-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.8rem;
      font-size: 0.9rem;
      color: var(--text-sub);
    }
    
    .wrong-item-title {
      font-weight: 600;
      margin-bottom: 1rem;
      line-height: 1.5;
    }
    
    .wrong-item-actions {
      display: flex;
      justify-content: flex-end;
      gap: 0.8rem;
    }
    
    /* 頁尾 */
    footer {
      text-align: center;
      padding: 1.5rem;
      color: var(--text-sub);
      font-size: 0.85rem;
      border-top: 1px solid var(--card-border);
      backdrop-filter: var(--glass-blur);
    }
    
    /* 避免按鈕快速點擊時的縮放延遲 */
    .option-btn, .btn-circle, .btn-normal {
      touch-action: manipulation;
    }

    /* 手機版響應式 RWD 樣式：最大化可視寬度，杜絕狹窄擠壓 */
    @media (max-width: 600px) {
      header {
        padding: 0.8rem 0.8rem;
        gap: 8px;
      }
      .logo {
        font-size: 1.15rem;
      }
      .theme-toggle-btn {
        width: 38px;
        height: 38px;
        font-size: 0.9rem;
      }
      .vip-badge-btn {
        padding: 0.3rem 0.65rem;
        font-size: 0.8rem;
      }
      main {
        padding: 0 0.4rem 2rem 0.4rem !important;
        width: 100% !important;
      }
      .welcome-container {
        width: 100% !important;
        padding: 0 0.2rem;
      }
      .welcome-title h1 {
        font-size: 1.6rem;
      }
      .welcome-title p {
        font-size: 0.9rem;
      }
      .glass-card {
        padding: 0.9rem 0.75rem !important;
        margin: 0.3rem auto !important;
        border-radius: 14px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }
      .quiz-layout {
        width: 100% !important;
        max-width: 100% !important;
      }
      .analysis-body {
        padding: 0.85rem 0.65rem !important;
        font-size: 0.95rem !important;
      }
      .analysis-header {
        padding: 0.75rem 0.85rem !important;
      }
      .katex-display {
        padding: 0.5rem 0.6rem !important;
        margin: 0.5rem 0 !important;
        font-size: 0.95em !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        width: 100% !important;
        box-sizing: border-box !important;
      }
      .katex {
        font-size: 1em !important;
      }
      .question-text {
        font-size: 1.05rem;
        margin-bottom: 1.2rem;
        line-height: 1.5;
      }
      .option-btn {
        padding: 0.75rem 0.85rem;
        font-size: 0.95rem;
        border-radius: 10px;
      }
      .option-num {
        width: 22px;
        height: 22px;
        font-size: 0.8rem;
      }
      .control-row {
        flex-direction: row;
        justify-content: space-between;
        padding-top: 1rem;
        margin-top: 1rem;
      }
      .btn-normal {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        border-radius: 8px;
      }
      .btn-circle {
        width: 40px;
        height: 40px;
        border-radius: 8px;
      }
      .drawer {
        width: 100%;
        height: 60vh;
        top: auto;
        bottom: -60vh;
        right: 0;
        border-left: none;
        border-top: 1px solid var(--card-border);
        border-radius: 20px 20px 0 0;
        transition: bottom 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      }
      .drawer.active {
        right: 0;
        bottom: 0;
      }
    }
    
    /* 簡易密碼登入驗證樣式 */
    .login-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(15, 23, 42, 0.95);
      z-index: 9999;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 1.5rem;
      backdrop-filter: blur(20px);
      transition: opacity 0.4s ease, visibility 0.4s ease;
    }
    
    .login-card {
      max-width: 400px !important;
      text-align: center;
      padding: 2.5rem 2rem !important;
      animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .login-logo {
      width: 70px;
      height: 70px;
      border-radius: 20px;
      background: rgba(99, 102, 241, 0.15);
      color: var(--accent-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2.2rem;
      margin: 0 auto 1.5rem auto;
    }
    
    .login-card h2 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    
    .login-card p {
      color: var(--text-sub);
      font-size: 0.95rem;
    }
    
    .login-input {
      width: 100%;
      padding: 0.9rem 1.2rem;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-main);
      font-size: 1.1rem;
      font-family: inherit;
      outline: none;
      text-align: center;
      letter-spacing: 2px;
      margin-top: 1.5rem;
    }
    
    .login-input:focus {
      border-color: var(--accent-color);
    }
    
    .login-btn {
      background: var(--accent-color);
      color: #fff;
      border: none;
      padding: 0.9rem 1.8rem;
      border-radius: 12px;
      font-weight: 600;
      cursor: pointer;
      width: 100%;
      margin-top: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }
    
    .login-btn:hover {
      background: var(--accent-hover);
    }


/* ==============================================================================
   商業授權與解析鎖定卡片樣式 (Commercial License & Gated Analysis)
   ============================================================================== */
.locked-analysis-banner {
  background: rgba(99, 102, 241, 0.08);
  border: 1px dashed var(--accent-color);
  border-radius: 12px;
  padding: 1.5rem 1.2rem;
  text-align: center;
  margin-top: 0.8rem;
}
.locked-analysis-banner .locked-icon {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}
.locked-analysis-banner h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}
.locked-analysis-banner p {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}
.vip-badge-btn {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(234, 88, 12, 0.2));
  border: 1px solid rgba(245, 158, 11, 0.5);
  color: #f59e0b;
  font-weight: 700;
  border-radius: 20px;
  padding: 0.35rem 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}
.vip-badge-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
}

/* 入口登入大門專屬樣式 (Google Auth Gatekeeper) */
.auth-gate-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.98));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  padding: 1.5rem;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.auth-gate-card {
  width: 100%;
  max-width: 440px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 0.4s ease forwards;
}

.google-auth-btn {
  width: 100%;
  padding: 0.9rem;
  background: #ffffff;
  color: #1f2937;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.2s ease;
  margin-top: 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.google-auth-btn:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.google-icon-svg {
  width: 20px;
  height: 20px;
}

.auth-divider {
  display: flex;
  align-items: center;
  margin: 1.2rem 0;
  color: var(--text-sub);
  font-size: 0.82rem;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  border-bottom: 1px solid var(--card-border);
}

.auth-divider::before {
  margin-right: 0.8rem;
}

.auth-divider::after {
  margin-left: 0.8rem;
}

.header-user-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #f59e0b;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
}