* { margin: 0; padding: 0; box-sizing: border-box; }
    :root {
      --primary: #4A90D9;
      --primary-dark: #3A7BC8;
      --secondary: #6C5CE7;
      --bg: #F5F7FA;
      --card-bg: #FFFFFF;
      --text: #333333;
      --text-light: #666666;
      --border: #E8ECF0;
      --success: #27AE60;
      --warning: #F39C12;
      --danger: #E74C3C;
      --info: #3498DB;
      --shadow: 0 2px 12px rgba(74, 144, 217, 0.15);
      --radius: 16px;
    }
    body {
      font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
      overflow-x: hidden;
    }
    .app-container {
      max-width: 428px;
      margin: 0 auto;
      min-height: 100vh;
      background: var(--bg);
      position: relative;
      padding-bottom: 70px;
    }
    .view { display: none; padding: 20px; min-height: calc(100vh - 70px); }
    .view.active { display: block; }

    /* Help Page */
    .help-section { background: var(--card-bg); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; box-shadow: var(--shadow); }
    .help-section h3 { font-size: 16px; font-weight: 700; margin: 0 0 12px; color: var(--text); }
    .help-section p { font-size: 15px; line-height: 1.6; margin: 8px 0; color: var(--text); }
    .help-step { display: flex; gap: 12px; margin-bottom: 12px; align-items: flex-start; }
    .step-num { width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700; flex-shrink: 0; }
    .help-list { padding-left: 20px; margin: 8px 0; font-size: 15px; line-height: 1.8; }
    .help-faq { padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 15px; line-height: 1.6; }
    .help-faq:last-child { border-bottom: none; }
    
    /* Tab Bar */
    .tab-bar {
      position: fixed;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 100%;
      max-width: 428px;
      height: 60px;
      background: var(--card-bg);
      display: flex;
      justify-content: space-around;
      align-items: center;
      box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
      z-index: 100;
    }
    .tab-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 8px 16px;
      cursor: pointer;
      transition: all 0.3s;
      color: var(--text-light);
    }
    .tab-item.active { color: var(--primary); }
    .tab-item svg { width: 24px; height: 24px; margin-bottom: 4px; }
    .tab-item span { font-size: 11px; }
    
    /* User Selection Page */
    .user-select-bg {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      min-height: calc(100vh - 60px);
      margin: -20px;
      padding: 40px 20px;
      color: white;
    }
    .user-select-header {
      text-align: center;
      margin-bottom: 30px;
    }
    .user-select-header .logo {
      width: 80px;
      height: 80px;
      background: rgba(255,255,255,0.2);
      border-radius: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 40px;
    }
    .user-select-header h1 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .user-select-header p {
      font-size: 15px;
      opacity: 0.9;
    }
    
    .user-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 20px;
    }
    .user-card {
      background: rgba(255,255,255,0.95);
      border-radius: var(--radius);
      padding: 16px;
      display: flex;
      align-items: center;
      gap: 16px;
      cursor: pointer;
      transition: all 0.2s;
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      color: var(--text);
      touch-action: manipulation;
      -webkit-tap-highlight-color: transparent;
    }
    .user-card:active { transform: scale(0.98); }
    .user-card .avatar {
      width: 56px;
      height: 56px;
      background: var(--bg);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 32px;
    }
    .user-card .info {
      flex: 1;
    }
    .user-card .name {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .user-card .grade {
      font-size: 15px;
      color: var(--text-light);
    }
    .user-card .arrow {
      font-size: 20px;
      color: var(--text-light);
    }
    
    .add-user-btn {
      background: rgba(255,255,255,0.2);
      border: 2px dashed rgba(255,255,255,0.5);
      border-radius: var(--radius);
      padding: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      cursor: pointer;
      font-size: 16px;
      color: white;
      transition: all 0.2s;
      touch-action: manipulation;
      -webkit-tap-highlight-color: transparent;
    }
    .add-user-btn:active {
      background: rgba(255,255,255,0.3);
    }
    
    /* Onboarding */
    .onboarding-title { font-size: 24px; font-weight: 700; text-align: center; margin-bottom: 30px; color: var(--text); }
    .option-group { margin-bottom: 24px; }
    .option-label { font-size: 15px; color: var(--text-light); margin-bottom: 12px; }
    .option-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .option-card {
      background: var(--card-bg);
      border: 2px solid var(--border);
      border-radius: var(--radius);
      padding: 16px;
      text-align: center;
      cursor: pointer;
      transition: all 0.2s;
      touch-action: manipulation;
      -webkit-tap-highlight-color: transparent;
    }
    .option-card.selected { border-color: var(--primary); background: rgba(74,144,217,0.05); }
    .option-card .icon { font-size: 28px; margin-bottom: 8px; }
    .option-card .text { font-size: 15px; font-weight: 500; }
    .btn-next {
      width: 100%;
      background: var(--primary);
      color: white;
      border: none;
      padding: 16px;
      border-radius: var(--radius);
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      margin-top: 20px;
      touch-action: manipulation;
      -webkit-tap-highlight-color: transparent;
    }
    .btn-next:disabled { background: #ccc; cursor: not-allowed; }
    .btn-back {
      background: none;
      border: none;
      color: var(--text-light);
      font-size: 15px;
      cursor: pointer;
      margin-top: 16px;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    
    /* Avatar Selection */
    .avatar-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .avatar-option {
      width: 56px;
      height: 56px;
      background: var(--bg);
      border: 2px solid var(--border);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 32px;
      cursor: pointer;
      transition: all 0.2s;
    }
    .avatar-option.selected { border-color: var(--primary); background: rgba(74,144,217,0.1); }
    .avatar-option:active { transform: scale(0.95); }
    
    /* Home Page */
    .home-header {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      margin: -20px -20px 20px -20px;
      padding: 20px;
      color: white;
    }
    .home-header-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 16px;
    }
    .current-user-btn {
      display: flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.2);
      border: none;
      border-radius: 20px;
      padding: 6px 12px;
      color: white;
      cursor: pointer;
      font-size: 15px;
    }
    .current-user-btn .avatar-small {
      width: 28px;
      height: 28px;
      background: rgba(255,255,255,0.3);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
    }
    .streak-badge {
      display: inline-flex;
      align-items: center;
      background: rgba(255,255,255,0.2);
      padding: 6px 12px;
      border-radius: 20px;
      font-size: 15px;
    }
    .streak-badge span { margin-left: 4px; font-weight: 600; }
    .greeting { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
    .greeting-sub { opacity: 0.9; font-size: 15px; }
    .stat-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 20px; }
    .stat-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 16px;
      box-shadow: var(--shadow);
    }
    .stat-card .value { font-size: 28px; font-weight: 700; color: var(--primary); }
    .stat-card .label { font-size: 12px; color: var(--text-light); margin-top: 4px; }
    .stat-card.highlight { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; }
    .stat-card.highlight .value, .stat-card.highlight .label { color: white; }
    
    .section-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; display: flex; align-items: center; justify-content: space-between; }
    .section-title .more { font-size: 15px; color: var(--primary); }
    
    /* Word Card */
    .word-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 20px;
      margin-bottom: 12px;
      box-shadow: var(--shadow);
      cursor: pointer;
      transition: transform 0.2s;
    }
    .word-card:active { transform: scale(0.98); }
    .word-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
    .word-text { font-size: 22px; font-weight: 700; }
    .phonetic { font-size: 15px; color: var(--text-light); margin-top: 4px; }
    .speak-btn {
      width: 44px;
      height: 44px;
      min-width: 44px;
      min-height: 44px;
      border-radius: 50%;
      background: rgba(74,144,217,0.1);
      border: none;
      color: var(--primary);
      font-size: 18px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s;
    }
    .speak-btn:active { transform: scale(0.9); background: var(--primary); color: white; }
    .word-meaning { font-size: 16px; color: var(--text); margin-bottom: 8px; }
    .word-example { font-size: 13px; color: var(--text-light); font-style: italic; }
    .strength-bar {
      height: 4px;
      background: var(--border);
      border-radius: 2px;
      margin-top: 12px;
      overflow: hidden;
    }
    .strength-fill { height: 100%; border-radius: 2px; transition: width 0.3s; }
    
    /* Review Card Flip */
    .flip-card {
      perspective: 1000px;
      margin-bottom: 20px;
    }
    .flip-card-inner {
      position: relative;
      width: 100%;
      min-height: 300px;
      transition: transform 0.6s;
      transform-style: preserve-3d;
    }
    .flip-card.flipped .flip-card-inner { transform: rotateY(180deg); }
    .flip-card-front, .flip-card-back {
      position: absolute;
      width: 100%;
      min-height: 300px;
      backface-visibility: hidden;
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .flip-card-back { transform: rotateY(180deg); }
    .flip-word { font-size: 36px; font-weight: 700; margin-bottom: 8px; }
    .flip-phonetic { font-size: 16px; color: var(--text-light); margin-bottom: 20px; }
    .flip-meaning { font-size: 20px; font-weight: 600; text-align: center; }
    .flip-example { font-size: 15px; color: var(--text-light); text-align: center; font-style: italic; }
    .flip-hint { font-size: 12px; color: var(--text-light); margin-top: 20px; }
    
    /* Action Buttons */
    .action-btns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; padding: 0 8px; }
    .action-btn {
      padding: 18px 16px;
      border-radius: var(--radius);
      border: none;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
    }
    .action-btn:active { transform: scale(0.95); }
    .action-btn.forgot { background: rgba(231,76,60,0.1); color: var(--danger); }
    .action-btn.fuzzy { background: rgba(243,156,18,0.1); color: var(--warning); }
    .action-btn.remember { background: rgba(39,174,96,0.1); color: var(--success); }
    
    /* Learn Card */
    .learn-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 30px 20px;
      text-align: center;
      box-shadow: var(--shadow);
      margin-bottom: 20px;
    }
    .learn-word { font-size: 42px; font-weight: 700; margin-bottom: 8px; }
    .learn-phonetic { font-size: 18px; color: var(--text-light); margin-bottom: 20px; }
    .learn-meaning { font-size: 24px; font-weight: 600; margin-bottom: 16px; }
    .learn-example { font-size: 15px; color: var(--text-light); font-style: italic; margin-bottom: 24px; padding: 0 20px; }
    
    /* Quiz */
    .quiz-question { background: var(--card-bg); border-radius: var(--radius); padding: 30px; text-align: center; box-shadow: var(--shadow); margin-bottom: 20px; }
    .quiz-word { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
    .quiz-phonetic { font-size: 15px; color: var(--text-light); }
    .quiz-options { display: flex; flex-direction: column; gap: 12px; }
    .quiz-option {
      background: var(--card-bg);
      border: 2px solid var(--border);
      border-radius: var(--radius);
      padding: 16px 20px;
      text-align: left;
      cursor: pointer;
      transition: all 0.2s;
      font-size: 15px;
    }
    .quiz-option:active { transform: scale(0.98); }
    .quiz-option.selected { border-color: var(--primary); background: rgba(74,144,217,0.05); }
    .quiz-option.correct { border-color: var(--success); background: rgba(39,174,96,0.1); }
    .quiz-option.wrong { border-color: var(--danger); background: rgba(231,76,60,0.1); }
    
    /* Stats Page */
    .chart-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 20px;
      box-shadow: var(--shadow);
      margin-bottom: 20px;
    }
    .chart-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
    .bar-chart { display: flex; align-items: flex-end; justify-content: space-between; height: 120px; padding: 0 10px; }
    .bar-item { display: flex; flex-direction: column; align-items: center; flex: 1; }
    .bar { width: 30px; background: var(--primary); border-radius: 4px 4px 0 0; transition: height 0.3s; min-height: 4px; }
    .bar-label { font-size: 10px; color: var(--text-light); margin-top: 8px; }
    .strength-dist { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .strength-item { text-align: center; padding: 16px 8px; border-radius: var(--radius); }
    .strength-item .value { font-size: 24px; font-weight: 700; }
    .strength-item .label { font-size: 12px; margin-top: 4px; }
    .strength-item.fragile { background: rgba(231,76,60,0.1); color: var(--danger); }
    .strength-item.normal { background: rgba(243,156,18,0.1); color: var(--warning); }
    .strength-item.stable { background: rgba(39,174,96,0.1); color: var(--success); }
    .strength-item.strong { background: rgba(52,152,219,0.1); color: var(--info); }
    
    /* Words Library */
    .filter-bar { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 12px; margin-bottom: 16px; }
    .filter-tag {
      padding: 8px 16px;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 20px;
      font-size: 13px;
      white-space: nowrap;
      cursor: pointer;
      transition: all 0.2s;
    }
    .filter-tag.active { background: var(--primary); color: white; border-color: var(--primary); }
    .word-list { display: flex; flex-direction: column; gap: 12px; }
    .word-mini {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: var(--shadow);
      cursor: pointer;
    }
    .word-mini:active { transform: scale(0.98); }
    .word-mini-left .word { font-size: 18px; font-weight: 600; }
    .word-mini-left .meaning { font-size: 15px; color: var(--text-light); margin-top: 4px; }
    .strength-dot { width: 12px; height: 12px; border-radius: 50%; }
    
    /* Modal */
    .modal-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.5);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 200;
      padding: 20px;
    }
    .modal-overlay.show { display: flex; }
    .modal { background: var(--card-bg); border-radius: var(--radius); width: 100%; max-width: 360px; padding: 24px; max-height: 80vh; overflow-y: auto; }
    .modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
    .modal-title { font-size: 18px; font-weight: 700; }
    .modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-light); }
    .modal-content .word { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
    .modal-content .phonetic { font-size: 15px; color: var(--text-light); margin-bottom: 16px; }
    .modal-content .meaning { font-size: 20px; font-weight: 600; margin-bottom: 16px; }
    .modal-content .example { font-size: 15px; color: var(--text-light); font-style: italic; margin-bottom: 20px; padding: 12px; background: var(--bg); border-radius: 8px; }
    .word-info-row { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
    .word-tag { padding: 4px 12px; background: var(--bg); border-radius: 12px; font-size: 12px; }
    
    /* User Switch Modal */
    .user-switch-modal {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.5);
      display: none;
      align-items: flex-start;
      justify-content: center;
      z-index: 200;
      padding-top: 60px;
    }
    .user-switch-modal.show { display: flex; }
    .user-switch-content {
      background: var(--card-bg);
      border-radius: var(--radius);
      width: 100%;
      max-width: 360px;
      overflow: hidden;
    }
    .user-switch-header {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .user-switch-header h3 { font-size: 16px; font-weight: 600; }
    .user-switch-list { padding: 8px; }
    .user-switch-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px;
      border-radius: 12px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .user-switch-item:active { background: var(--bg); }
    .user-switch-item .avatar-small {
      width: 44px;
      height: 44px;
      background: var(--bg);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
    }
    .user-switch-item .name { font-size: 16px; font-weight: 500; }
    .user-switch-item .grade { font-size: 13px; color: var(--text-light); }
    .user-switch-item.current { background: rgba(74,144,217,0.1); }
    .user-switch-add {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px;
      border-radius: 12px;
      cursor: pointer;
      color: var(--primary);
      transition: background 0.2s;
    }
    .user-switch-add:active { background: var(--bg); }
    
    /* Settings */
    .settings-group { background: var(--card-bg); border-radius: var(--radius); overflow: hidden; margin-bottom: 20px; box-shadow: var(--shadow); }
    .settings-item { padding: 16px 20px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); cursor: pointer; }
    .settings-item:last-child { border-bottom: none; }
    .settings-item .label { font-size: 15px; }
    .settings-item .value { color: var(--text-light); font-size: 15px; }
    .settings-item.danger { color: var(--danger); }
    .settings-item.danger .label { color: var(--danger); }
    .sprint-toggle { display: flex; gap: 12px; }
    .sprint-btn { flex: 1; padding: 12px; border: 2px solid var(--border); background: none; border-radius: 8px; font-size: 15px; cursor: pointer; }
    .sprint-btn.active { border-color: var(--secondary); background: rgba(108,92,231,0.1); color: var(--secondary); }
    
    /* Progress Ring */
    .progress-ring { position: relative; width: 120px; height: 120px; margin: 0 auto 20px; }
    .progress-ring svg { transform: rotate(-90deg); }
    .progress-ring circle { fill: none; stroke-width: 8; }
    .progress-ring .bg { stroke: var(--border); }
    .progress-ring .fill { stroke: var(--primary); stroke-linecap: round; transition: stroke-dashoffset 0.3s; }
    .progress-ring .text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; }
    .progress-ring .percent { font-size: 24px; font-weight: 700; }
    .progress-ring .label { font-size: 12px; color: var(--text-light); }
    
    /* Baseline Test */
    .baseline-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow);
      margin-bottom: 16px;
    }
    .baseline-card .word { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
    .baseline-card .phonetic { font-size: 15px; color: var(--text-light); margin-bottom: 20px; }
    .baseline-btns { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .baseline-btn { padding: 20px; border-radius: var(--radius); border: none; font-size: 16px; font-weight: 600; cursor: pointer; }
    .baseline-btn.know { background: rgba(39,174,96,0.1); color: var(--success); }
    .baseline-btn.dont-know { background: rgba(231,76,60,0.1); color: var(--danger); }
    
    /* Grade Confirm Modal */
    .grade-modal {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.5);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 250;
      padding: 20px;
    }
    .grade-modal.show { display: flex; }
    .grade-modal-content {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 30px 24px;
      text-align: center;
      max-width: 320px;
    }
    .grade-modal-content .icon { font-size: 48px; margin-bottom: 16px; }
    .grade-modal-content h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
    .grade-modal-content p { font-size: 15px; color: var(--text-light); margin-bottom: 24px; }
    .grade-modal-content .grade-btns { display: flex; gap: 12px; }
    .grade-modal-content .grade-btn {
      flex: 1;
      padding: 16px;
      border-radius: var(--radius);
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      border: none;
    }
    .grade-modal-content .grade-btn.confirm { background: var(--primary); color: white; }
    .grade-modal-content .grade-btn.cancel { background: var(--bg); color: var(--text); }
    
    /* Loading */
    .loading { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 200px; }
    .spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; }
    @keyframes spin { to { transform: rotate(360deg); } }
    
    /* Pulse animation for speak button */
    @keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(74,144,217,0.4); } 70% { box-shadow: 0 0 0 10px rgba(74,144,217,0); } 100% { box-shadow: 0 0 0 0 rgba(74,144,217,0); } }
    .speak-btn.speaking { animation: pulse 0.6s ease-out; background: var(--primary); color: white; }
    
    /* Toast */
    .toast {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%) translateY(-100px);
      background: var(--text);
      color: white;
      padding: 12px 24px;
      border-radius: 8px;
      font-size: 15px;
      z-index: 300;
      transition: transform 0.3s;
    }
    .toast.show { transform: translateX(-50%) translateY(0); }
    
    /* Name input */
    .name-input {
      width: 100%;
      padding: 16px;
      border: 2px solid var(--border);
      border-radius: var(--radius);
      font-size: 18px;
      text-align: center;
      margin-bottom: 8px;
    }
    .name-input:focus { outline: none; border-color: var(--primary); }
    .name-hint { font-size: 12px; color: var(--text-light); text-align: center; }
  
    /* Daily Quote */
    .daily-quote {
      margin: 16px 0;
      padding: 16px 20px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 16px;
      color: #fff;
      position: relative;
      overflow: hidden;
    }
    .daily-quote::before {
      content: '"';
      position: absolute;
      top: -10px;
      left: 10px;
      font-size: 80px;
      opacity: 0.15;
      font-family: Georgia, serif;
    }
    .daily-quote .quote-en {
      font-size: 15px;
      line-height: 1.5;
      font-style: italic;
      margin-bottom: 8px;
      position: relative;
    }
    .daily-quote .quote-cn {
      font-size: 13px;
      opacity: 0.85;
      margin-bottom: 8px;
    }
    .daily-quote .quote-author {
      font-size: 12px;
      opacity: 0.6;
      text-align: right;
    }
    .daily-quote .speak-quote {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(255,255,255,0.2);
      border: none;
      border-radius: 50%;
      width: 32px;
      height: 32px;
      color: #fff;
      font-size: 16px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .daily-quote .speak-quote.speaking {
      background: var(--primary);
      color: white;
      transform: scale(1.1);
    }
    .daily-quote .speak-quote:active {
      background: rgba(255,255,255,0.4);
      transform: scale(0.9);
    }