编辑页面

HTML内容
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>单词背背 - 英语单词背诵小程序</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }
        :root {
            --primary: #4A90D9; --primary-dark: #3A7BC8; --secondary: #F5A623;
            --success: #52C41A; --danger: #F5222D; --bg: #F7F8FA;
            --card-bg: #FFFFFF; --text-primary: #1A1A1A; --text-secondary: #666;
            --text-light: #999; --border: #E8E8E8;
        }
        body { background: var(--bg); min-height: 100vh; max-width: 430px; margin: 0 auto; }

        /* ===== 通用组件 ===== */
        .header-bar {
            background: linear-gradient(135deg, var(--primary), #6BB3F8);
            color: white; padding: 16px; display: flex; align-items: center;
            position: relative; z-index: 10;
        }
        .header-bar .back-btn { font-size: 24px; margin-right: 12px; cursor: pointer; }
        .header-bar h1 { font-size: 18px; font-weight: 600; flex: 1; }
        .header-bar .header-action { font-size: 20px; }
        
        .page { display: none; padding-bottom: 80px; }
        .page.active { display: block; }
        
        .content-card {
            background: var(--card-bg); border-radius: 16px; padding: 20px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.08); margin: 0 16px 16px;
        }
        
        .section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; padding: 0 16px; }
        .section-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
        .section-more { color: var(--text-light); font-size: 13px; }
        
        .primary-btn {
            width: 100%; background: linear-gradient(135deg, var(--primary), #6BB3F8);
            color: white; border: none; padding: 14px; border-radius: 24px;
            font-size: 16px; font-weight: 600; cursor: pointer; margin-top: 16px;
        }
        .primary-btn:active { transform: scale(0.98); }
        .secondary-btn {
            width: 100%; background: var(--bg); color: var(--text-secondary);
            border: none; padding: 14px; border-radius: 24px;
            font-size: 16px; font-weight: 500; cursor: pointer; margin-top: 12px;
        }

        /* ===== 底部导航 ===== */
        .tab-bar {
            position: fixed; bottom: 0; left: 50%; transform: translateX(-50%);
            width: 100%; max-width: 430px; background: white;
            display: flex; justify-content: space-around; padding: 8px 0 20px;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.05); z-index: 100;
        }
        .tab-item { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 20px; cursor: pointer; }
        .tab-item svg { width: 24px; height: 24px; fill: var(--text-light); }
        .tab-item span { font-size: 11px; color: var(--text-light); }
        .tab-item.active svg { fill: var(--primary); }
        .tab-item.active span { color: var(--primary); font-weight: 500; }

        /* ===== 首页 ===== */
        .home-header {
            background: linear-gradient(135deg, var(--primary), #6BB3F8);
            color: white; padding: 16px 16px 80px;
        }
        .home-header-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
        .home-header h1 { font-size: 20px; font-weight: 600; }
        .home-header-actions { display: flex; gap: 16px; font-size: 20px; }
        .home-greeting { font-size: 14px; opacity: 0.9; }
        .home-content { padding: 0 16px 80px; margin-top: -60px; position: relative; z-index: 5; }
        
        /* 打卡卡片 */
        .checkin-card { background: var(--card-bg); border-radius: 16px; padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); margin-bottom: 16px; }
        .checkin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
        .checkin-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
        .checkin-streak { background: linear-gradient(135deg, #FF6B6B, #FF8E53); color: white; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 500; cursor: pointer; }
        .checkin-info { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
        .checkin-calendar { display: flex; gap: 4px; }
        .calendar-day { width: 32px; height: 32px; border-radius: 8px; background: var(--bg); display: flex; align-items: center; justify-content: center; font-size: 11px; color: var(--text-light); }
        .calendar-day.checked { background: var(--success); color: white; }
        .calendar-day.today { border: 2px solid var(--primary); color: var(--primary); }
        .checkin-btn { background: var(--primary); color: white; border: none; padding: 10px 20px; border-radius: 24px; font-size: 14px; font-weight: 500; cursor: pointer; }
        .checkin-btn:disabled { background: var(--success); }
        
        /* 计划卡片 */
        .plan-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
        .plan-card { background: var(--card-bg); border-radius: 12px; padding: 16px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); cursor: pointer; }
        .plan-card:active { transform: scale(0.98); }
        .plan-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 12px; }
        .plan-icon.cet4 { background: linear-gradient(135deg, #E8F4FD, #D4EBFC); }
        .plan-icon.cet6 { background: linear-gradient(135deg, #FDF2E8, #FCE4D4); }
        .plan-name { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
        .plan-progress { font-size: 12px; color: var(--text-light); }
        .plan-progress-bar { height: 4px; background: var(--bg); border-radius: 2px; margin-top: 8px; overflow: hidden; }
        .plan-progress-fill { height: 100%; background: var(--primary); border-radius: 2px; }
        
        /* 新闻卡片 */
        .news-card { background: var(--card-bg); border-radius: 12px; padding: 16px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); margin-bottom: 12px; cursor: pointer; }
        .news-card:active { transform: scale(0.98); }
        .news-content { display: flex; gap: 12px; }
        .news-text { flex: 1; }
        .news-title { font-size: 14px; font-weight: 500; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }
        .news-meta { font-size: 12px; color: var(--text-light); display: flex; gap: 12px; }
        .news-tag { color: var(--primary); }
        .news-image { width: 80px; height: 60px; border-radius: 8px; background: #E3F2FD; display: flex; align-items: center; justify-content: center; font-size: 28px; }

        /* ===== 单词页 ===== */
        .word-header { background: linear-gradient(135deg, var(--primary), #6BB3F8); padding: 16px; border-radius: 0 0 24px 24px; }
        .word-search { background: white; border-radius: 24px; padding: 12px 16px; display: flex; align-items: center; gap: 10px; }
        .word-search svg { width: 20px; height: 20px; fill: var(--text-light); }
        .word-search input { flex: 1; border: none; outline: none; font-size: 14px; }
        
        .word-categories { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; padding: 16px; }
        .word-category { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 16px 8px; background: var(--card-bg); border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); cursor: pointer; }
        .category-icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; }
        .category-icon.plan { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
        .category-icon.test { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }
        .category-icon.book { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
        .category-name { font-size: 12px; color: var(--text-primary); font-weight: 500; }
        
        .word-list-item { background: var(--card-bg); border-radius: 12px; padding: 16px; margin: 0 16px 12px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 8px rgba(0,0,0,0.06); cursor: pointer; }
        .word-list-left { display: flex; align-items: center; gap: 12px; }
        .word-list-num { width: 32px; height: 32px; background: var(--bg); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 600; color: var(--text-secondary); }
        .word-main-text { font-size: 15px; font-weight: 600; color: var(--text-primary); }
        .word-meaning { font-size: 12px; color: var(--text-light); margin-top: 2px; }
        .word-arrow { color: var(--text-light); font-size: 18px; }

        /* ===== 学习计划详情页 ===== */
        .plan-detail-header { background: var(--card-bg); border-radius: 16px; padding: 20px; margin: 16px; text-align: center; }
        .plan-detail-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin: 0 auto 12px; }
        .plan-detail-title { font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
        .plan-detail-desc { font-size: 13px; color: var(--text-light); margin-bottom: 20px; }
        .progress-ring { display: flex; justify-content: center; margin: 20px 0; }
        .progress-circle { width: 120px; height: 120px; border-radius: 50%; background: conic-gradient(var(--primary) 0deg 234deg, var(--bg) 234deg 360deg); display: flex; align-items: center; justify-content: center; }
        .progress-inner { width: 100px; height: 100px; background: white; border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; }
        .progress-value { font-size: 24px; font-weight: 700; color: var(--primary); }
        .progress-label { font-size: 11px; color: var(--text-light); }
        .study-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
        .stat-item { text-align: center; }
        .stat-value { font-size: 20px; font-weight: 700; color: var(--text-primary); }
        .stat-label { font-size: 11px; color: var(--text-light); margin-top: 4px; }
        
        .plan-actions { padding: 0 16px; }
        .plan-action-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
        .plan-action-item { background: var(--card-bg); border-radius: 12px; padding: 16px; text-align: center; cursor: pointer; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
        .plan-action-icon { font-size: 28px; margin-bottom: 8px; }
        .plan-action-name { font-size: 14px; font-weight: 500; color: var(--text-primary); }
        .plan-action-desc { font-size: 12px; color: var(--text-light); margin-top: 4px; }

        /* ===== 单词背诵页 ===== */
        .learn-page { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: white; z-index: 200; display: none; }
        .learn-page.show { display: block; }
        .learn-header { display: flex; justify-content: space-between; align-items: center; padding: 16px; border-bottom: 1px solid var(--border); }
        .learn-close { font-size: 24px; color: var(--text-light); cursor: pointer; }
        .learn-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
        .learn-progress-bar { height: 4px; background: var(--border); }
        .learn-progress-fill { height: 100%; background: var(--primary); transition: width 0.3s; }
        .learn-content { padding: 24px 16px; text-align: center; }
        .learn-word { font-size: 36px; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
        .learn-phonetic { font-size: 16px; color: var(--text-light); margin-bottom: 24px; }
        .learn-meaning { padding: 20px; background: var(--bg); border-radius: 16px; text-align: left; margin-bottom: 24px; }
        .meaning-item { margin-bottom: 12px; }
        .meaning-pos { display: inline-block; padding: 2px 8px; background: var(--primary); color: white; border-radius: 4px; font-size: 11px; margin-right: 8px; }
        .meaning-text { font-size: 14px; color: var(--text-primary); }
        .learn-example { padding: 16px; background: #FFF9E6; border-radius: 12px; text-align: left; border-left: 4px solid var(--secondary); margin-bottom: 24px; }
        .example-label { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }
        .example-text { font-size: 14px; color: var(--text-primary); line-height: 1.6; }
        .learn-buttons { display: flex; gap: 12px; position: fixed; bottom: 40px; left: 16px; right: 16px; }
        .learn-btn { flex: 1; padding: 16px; border: none; border-radius: 24px; font-size: 16px; font-weight: 600; cursor: pointer; }
        .learn-btn.prev { background: var(--bg); color: var(--text-secondary); }
        .learn-btn.next { background: var(--primary); color: white; }
        .learn-btn.know { background: var(--success); color: white; }
        .learn-btn.forgot { background: var(--danger); color: white; }

        /* ===== 单词自检页 ===== */
        .test-card { background: var(--card-bg); border-radius: 16px; padding: 24px; margin: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); text-align: center; }
        .test-progress { font-size: 13px; color: var(--text-light); margin-bottom: 24px; }
        .test-word { font-size: 32px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
        .test-phonetic { font-size: 14px; color: var(--text-light); }
        .test-options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
        .test-option { padding: 16px; border: 2px solid var(--border); border-radius: 12px; font-size: 14px; color: var(--text-primary); background: white; cursor: pointer; transition: all 0.3s; }
        .test-option:active { transform: scale(0.95); }
        .test-option.correct { border-color: var(--success); background: #F6FFED; color: var(--success); }
        .test-option.wrong { border-color: var(--danger); background: #FFF2F0; color: var(--danger); }
        
        /* ===== 单词本页 ===== */
        .wordbook-tabs { display: flex; padding: 16px; gap: 12px; }
        .wordbook-tab { flex: 1; padding: 10px; background: var(--card-bg); border-radius: 24px; text-align: center; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
        .wordbook-tab.active { background: var(--primary); color: white; }
        .wordbook-filter { display: flex; gap: 8px; padding: 0 16px 16px; flex-wrap: wrap; }
        .filter-tag { padding: 6px 12px; background: var(--bg); border-radius: 16px; font-size: 12px; color: var(--text-secondary); cursor: pointer; }
        .filter-tag.active { background: var(--primary); color: white; }

        /* ===== 单词详情页 ===== */
        .word-detail-card { background: var(--card-bg); border-radius: 16px; padding: 20px; margin: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
        .word-detail-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
        .word-detail-word { font-size: 28px; font-weight: 700; color: var(--text-primary); }
        .word-detail-phonetic { font-size: 14px; color: var(--text-light); margin-top: 4px; }
        .word-audio-btn { width: 40px; height: 40px; background: var(--bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; cursor: pointer; }
        .word-meaning-section { background: var(--bg); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
        .word-example-section { background: #FFF9E6; border-radius: 12px; padding: 16px; border-left: 3px solid var(--secondary); }
        .word-example-label { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }
        .word-example-en { font-size: 14px; color: var(--text-primary); margin-bottom: 4px; }
        .word-example-cn { font-size: 13px; color: var(--text-light); }
        .add-to-bookmark { width: 100%; background: white; border: 2px solid var(--primary); color: var(--primary); padding: 12px; border-radius: 24px; font-size: 14px; font-weight: 500; cursor: pointer; margin-top: 16px; }
        .add-to-bookmark:active { background: var(--primary); color: white; }

        /* ===== 个人中心 ===== */
        .profile-header { background: linear-gradient(135deg, var(--primary), #6BB3F8); color: white; padding: 24px 16px 80px; text-align: center; }
        .avatar { width: 80px; height: 80px; border-radius: 50%; background: white; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 40px; }
        .profile-name { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
        .profile-level { font-size: 13px; opacity: 0.9; }
        .profile-stats { display: flex; justify-content: center; gap: 32px; margin-top: 20px; }
        .profile-stat { text-align: center; }
        .profile-stat-value { font-size: 20px; font-weight: 700; }
        .profile-stat-label { font-size: 11px; opacity: 0.8; margin-top: 4px; }
        .profile-content { padding: 0 16px 80px; margin-top: -60px; }
        .profile-card { background: var(--card-bg); border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); margin-bottom: 16px; overflow: hidden; }
        .menu-item { display: flex; align-items: center; padding: 14px 16px; cursor: pointer; }
        .menu-item:active { background: var(--bg); }
        .menu-icon { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-right: 12px; font-size: 18px; }
        .menu-icon.blue { background: #E3F2FD; }
        .menu-icon.green { background: #E8F5E9; }
        .menu-icon.orange { background: #FFF3E0; }
        .menu-icon.purple { background: #F3E5F5; }
        .menu-icon.red { background: #FFEBEE; }
        .menu-icon.gray { background: #F5F5F5; }
        .menu-text { flex: 1; font-size: 15px; color: var(--text-primary); }
        .menu-arrow { color: var(--text-light); font-size: 18px; }
        .menu-divider { height: 1px; background: var(--border); margin-left: 64px; }
        .logout-btn { width: 100%; padding: 14px; background: white; border: none; font-size: 15px; color: var(--danger); cursor: pointer; }

        /* ===== 设置页 ===== */
        .setting-section { background: var(--card-bg); border-radius: 12px; margin: 16px; overflow: hidden; }
        .setting-item { display: flex; justify-content: space-between; align-items: center; padding: 16px; border-bottom: 1px solid var(--border); cursor: pointer; }
        .setting-item:last-child { border-bottom: none; }
        .setting-label { font-size: 15px; color: var(--text-primary); }
        .setting-value { font-size: 14px; color: var(--text-light); display: flex; align-items: center; gap: 8px; }
        .toggle-switch { width: 44px; height: 24px; background: var(--border); border-radius: 12px; position: relative; cursor: pointer; transition: all 0.3s; }
        .toggle-switch.active { background: var(--primary); }
        .toggle-switch::after { content: ''; width: 20px; height: 20px; background: white; border-radius: 50%; position: absolute; top: 2px; left: 2px; transition: all 0.3s; }
        .toggle-switch.active::after { left: 22px; }

        /* ===== 学习记录页 ===== */
        .record-tabs { display: flex; padding: 16px; gap: 8px; }
        .record-tab { flex: 1; padding: 10px; background: var(--bg); border-radius: 8px; text-align: center; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
        .record-tab.active { background: var(--primary); color: white; }
        .calendar-full { background: var(--card-bg); border-radius: 16px; margin: 0 16px 16px; padding: 16px; }
        .calendar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
        .calendar-month { font-size: 16px; font-weight: 600; color: var(--text-primary); }
        .calendar-nav { display: flex; gap: 12px; }
        .calendar-nav span { font-size: 18px; color: var(--text-light); cursor: pointer; }
        .calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; }
        .calendar-weekday { font-size: 12px; color: var(--text-light); padding: 8px 0; }
        .calendar-day-full { padding: 8px; font-size: 14px; color: var(--text-primary); border-radius: 8px; cursor: pointer; }
        .calendar-day-full.empty { }
        .calendar-day-full.checked { background: var(--success); color: white; }
        .calendar-day-full.today { border: 2px solid var(--primary); }
        .record-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
        .record-stat { background: var(--card-bg); border-radius: 12px; padding: 16px; text-align: center; }
        .record-stat-value { font-size: 24px; font-weight: 700; color: var(--primary); }
        .record-stat-label { font-size: 12px; color: var(--text-light); margin-top: 4px; }

        /* ===== 成就页 ===== */
        .achievement-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 16px; }
        .achievement-item { background: var(--card-bg); border-radius: 16px; padding: 20px; text-align: center; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
        .achievement-icon { font-size: 40px; margin-bottom: 12px; }
        .achievement-name { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
        .achievement-desc { font-size: 12px; color: var(--text-light); }
        .achievement-item.locked { opacity: 0.5; }
        .achievement-item.locked .achievement-icon { filter: grayscale(1); }

        /* ===== 反馈页 ===== */
        .feedback-types { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; }
        .feedback-type { padding: 8px 16px; background: var(--bg); border-radius: 20px; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
        .feedback-type.active { background: var(--primary); color: white; }
        .feedback-textarea { width: calc(100% - 32px); margin: 0 16px 16px; padding: 16px; border: 2px solid var(--border); border-radius: 12px; font-size: 14px; resize: none; min-height: 150px; outline: none; }
        .feedback-textarea:focus { border-color: var(--primary); }
        .feedback-contact { padding: 0 16px 16px; }
        .feedback-contact input { width: 100%; padding: 12px 16px; border: 2px solid var(--border); border-radius: 12px; font-size: 14px; outline: none; }

        /* ===== 新闻列表页 ===== */
        .news-list { padding: 16px; }
        .news-list-item { background: var(--card-bg); border-radius: 12px; padding: 16px; margin-bottom: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); cursor: pointer; }
        .news-list-item:active { transform: scale(0.98); }
        .news-list-title { font-size: 15px; font-weight: 500; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }
        .news-list-meta { display: flex; justify-content: space-between; align-items: center; }
        .news-list-tags { display: flex; gap: 8px; }
        .news-list-tag { padding: 4px 8px; background: var(--bg); border-radius: 4px; font-size: 11px; color: var(--text-light); }

        /* ===== 新闻详情页 ===== */
        .news-detail-header { padding: 16px; }
        .news-detail-title { font-size: 20px; font-weight: 700; color: var(--text-primary); line-height: 1.5; margin-bottom: 12px; }
        .news-detail-meta { font-size: 13px; color: var(--text-light); }
        .news-detail-image { width: calc(100% - 32px); margin: 0 16px 16px; height: 200px; background: linear-gradient(135deg, #E3F2FD, #BBDEFB); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 60px; }
        .news-detail-content { padding: 0 16px 80px; }
        .news-detail-content p { font-size: 15px; color: var(--text-primary); line-height: 1.8; margin-bottom: 16px; }
        .news-detail-word { background: var(--bg); border-radius: 12px; padding: 16px; margin-top: 16px; }
        .news-detail-word-title { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
        .news-detail-word-item { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); }
        .news-detail-word-item:last-child { border-bottom: none; }
        .news-word-en { color: var(--primary); font-weight: 500; }
        .news-word-cn { color: var(--text-secondary); font-size: 13px; }
        .news-translate-btn { width: 100%; padding: 14px; background: var(--primary); color: white; border: none; border-radius: 24px; font-size: 15px; font-weight: 500; cursor: pointer; margin-top: 16px; }

        /* ===== 打卡历史页 ===== */
        .checkin-history { padding: 16px; }
        .checkin-month { margin-bottom: 16px; }
        .checkin-month-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 12px; }
        .checkin-days { display: flex; gap: 8px; flex-wrap: wrap; }
        .checkin-day { width: 44px; height: 44px; background: var(--card-bg); border-radius: 12px; display: flex; flex-direction: column; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
        .checkin-day.checked { background: var(--success); color: white; }
        .checkin-day-num { font-size: 14px; font-weight: 600; }
        .checkin-day-status { font-size: 10px; opacity: 0.8; }
        .checkin-summary { background: var(--card-bg); border-radius: 16px; padding: 20px; margin-top: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
        .summary-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; text-align: center; }
        .summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
        .summary-item { text-align: center; }
        .summary-value { font-size: 24px; font-weight: 700; color: var(--primary); }
        .summary-label { font-size: 12px; color: var(--text-light); margin-top: 4px; }

        /* ===== 登录模态框 ===== */
        .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: 1000; }
        .modal-overlay.show { display: flex; }
        .modal { background: white; border-radius: 20px 20px 0 0; width: 100%; max-width: 430px; padding: 24px; animation: slideUp 0.3s ease; }
        @keyframes slideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
        .modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
        .modal-title { font-size: 18px; font-weight: 600; color: var(--text-primary); }
        .modal-close { font-size: 24px; color: var(--text-light); cursor: pointer; }
        .form-group { margin-bottom: 16px; }
        .form-label { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; display: block; }
        .form-input { width: 100%; padding: 12px 16px; border: 2px solid var(--border); border-radius: 12px; font-size: 15px; outline: none; }
        .form-input:focus { border-color: var(--primary); }
        .form-btn { width: 100%; padding: 14px; background: linear-gradient(135deg, var(--primary), #6BB3F8); color: white; border: none; border-radius: 24px; font-size: 16px; font-weight: 600; cursor: pointer; }
        .form-footer { text-align: center; margin-top: 16px; font-size: 14px; color: var(--text-light); }
        .form-footer a { color: var(--primary); text-decoration: none; }

        /* ===== Toast ===== */
        .toast { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: rgba(0,0,0,0.75); color: white; padding: 12px 24px; border-radius: 8px; font-size: 14px; z-index: 2000; opacity: 0; transition: opacity 0.3s; pointer-events: none; }
        .toast.show { opacity: 1; }

        /* ===== 账号设置页 ===== */
        .account-section { background: var(--card-bg); border-radius: 12px; margin: 16px; overflow: hidden; }
        .account-item { display: flex; justify-content: space-between; align-items: center; padding: 16px; border-bottom: 1px solid var(--border); }
        .account-item:last-child { border-bottom: none; }
        .account-label { font-size: 15px; color: var(--text-primary); }
        .account-value { font-size: 14px; color: var(--text-light); display: flex; align-items: center; gap: 8px; }
        .account-avatar { width: 60px; height: 60px; border-radius: 50%; background: var(--bg); display: flex; align-items: center; justify-content: center; font-size: 30px; }
    </style>
</head>
<body>
    <!-- ===== 首页 ===== -->
    <div id="page-home" class="page active">
        <div class="home-header">
            <div class="home-header-top">
                <h1>单词背背</h1>
                <div class="home-header-actions">
                    <span onclick="showPage('checkin-history')">📅</span>
                </div>
            </div>
            <p class="home-greeting">每天进步一点点，成就更好的自己</p>
        </div>
        <div class="home-content">
            <!-- 打卡卡片 -->
            <div class="checkin-card">
                <div class="checkin-header">
                    <span class="checkin-title">🌟 每日打卡</span>
                    <span class="checkin-streak" onclick="showPage('checkin-history')">🔥 连续7天</span>
                </div>
                <div class="checkin-info">
                    <div class="checkin-calendar">
                        <div class="calendar-day checked">一</div>
                        <div class="calendar-day checked">二</div>
                        <div class="calendar-day checked">三</div>
                        <div class="calendar-day checked">四</div>
                        <div class="calendar-day checked">五</div>
                        <div class="calendar-day checked">六</div>
                        <div class="calendar-day today">日</div>
                    </div>
                    <button class="checkin-btn" id="checkin-btn" onclick="doCheckin()">立即打卡</button>
                </div>
            </div>
            
            <!-- 学习计划 -->
            <div class="section-header">
                <span class="section-title">🎯 学习计划</span>
                <span class="section-more" onclick="showPage('plan-list')">查看全部 ></span>
            </div>
            <div class="plan-cards">
                <div class="plan-card" onclick="showPlanDetail('cet4')">
                    <div class="plan-icon cet4">CET-4</div>
                    <div class="plan-name">四级词汇</div>
                    <div class="plan-progress">进度 65% · 已学1560词</div>
                    <div class="plan-progress-bar"><div class="plan-progress-fill" style="width: 65%"></div></div>
                </div>
                <div class="plan-card" onclick="showPlanDetail('cet6')">
                    <div class="plan-icon cet6">CET-6</div>
                    <div class="plan-name">六级词汇</div>
                    <div class="plan-progress">进度 32% · 已学768词</div>
                    <div class="plan-progress-bar"><div class="plan-progress-fill" style="width: 32%"></div></div>
                </div>
            </div>
            
            <!-- 英语新闻 -->
            <div class="section-header" style="margin-top: 16px;">
                <span class="section-title">📰 每日英语新闻</span>
                <span class="section-more" onclick="showPage('news-list')">更多 ></span>
            </div>
            <div class="news-card" onclick="showNewsDetail(0)">
                <div class="news-content">
                    <div class="news-text">
                        <div class="news-title">Apple Unveils New AI Features at WWDC 2026</div>
                        <div class="news-meta"><span class="news-tag">科技</span><span>3分钟前</span></div>
                    </div>
                    <div class="news-image">💻</div>
                </div>
            </div>
            <div class="news-card" onclick="showNewsDetail(1)">
                <div class="news-content">
                    <div class="news-text">
                        <div class="news-title">Global Climate Summit Reaches Historic Agreement</div>
                        <div class="news-meta"><span class="news-tag">环境</span><span>1小时前</span></div>
                    </div>
                    <div class="news-image">🌍</div>
                </div>
            </div>
        </div>
    </div>

    <!-- ===== 单词页 ===== -->
    <div id="page-word" class="page">
        <div class="word-header">
            <div class="word-search">
                <svg viewBox="0 0 24 24"><path d="M21.71 20.29L18 16.61A9 9 0 1 0 16.61 18l3.68 3.68a1 1 0 0 0 1.42 0 1 1 0 0 0 0-1.42zM11 18a7 7 0 1 1 7-7 7 7 0 0 1-7 7z"/></svg>
                <input type="text" placeholder="搜索单词..." id="search-input" onkeypress="handleSearch(event)">
            </div>
        </div>
        <div id="word-main">
            <div class="word-categories">
                <div class="word-category" onclick="showPlanDetail('cet4')">
                    <div class="category-icon plan">📖</div>
                    <span class="category-name">四级计划</span>
                </div>
                <div class="word-category" onclick="showPlanDetail('cet6')">
                    <div class="category-icon plan">📚</div>
                    <span class="category-name">六级计划</span>
                </div>
                <div class="word-category" onclick="showPage('word-test')">
                    <div class="category-icon test">✏</div>
                    <span class="category-name">单词自检</span>
                </div>
                <div class="word-category" onclick="showPage('wordbook')">
                    <div class="category-icon book">📝</div>
                    <span class="category-name">单词本</span>
                </div>
            </div>
            
            <div class="section-header">
                <span class="section-title">✨ 热门单词</span>
            </div>
            <div class="word-list-item" onclick="showWordDetail('apple')">
                <div class="word-list-left">
                    <div class="word-list-num">1</div>
                    <div><div class="word-main-text">apple</div><div class="word-meaning">n. 苹果</div></div>
                </div>
                <span class="word-arrow">></span>
            </div>
            <div class="word-list-item" onclick="showWordDetail('beautiful')">
                <div class="word-list-left">
                    <div class="word-list-num">2</div>
                    <div><div class="word-main-text">beautiful</div><div class="word-meaning">adj. 美丽的</div></div>
                </div>
                <span class="word-arrow">></span>
            </div>
            <div class="word-list-item" onclick="showWordDetail('knowledge')">
                <div class="word-list-left">
                    <div class="word-list-num">3</div>
                    <div><div class="word-main-text">knowledge</div><div class="word-meaning">n. 知识</div></div>
                </div>
                <span class="word-arrow">></span>
            </div>
            <div class="word-list-item" onclick="showWordDetail('perseverance')">
                <div class="word-list-left">
                    <div class="word-list-num">4</div>
                    <div><div class="word-main-text">perseverance</div><div class="word-meaning">n. 坚持不懈</div></div>
                </div>
                <span class="word-arrow">></span>
            </div>
            <div class="word-list-item" onclick="showWordDetail('endeavor')">
                <div class="word-list-left">
                    <div class="word-list-num">5</div>
                    <div><div class="word-main-text">endeavor</div><div class="word-meaning">v. 努力尝试</div></div>
                </div>
                <span class="word-arrow">></span>
            </div>
        </div>
    </div>

    <!-- ===== 个人中心 ===== -->
    <div id="page-profile" class="page">
        <div class="profile-header">
            <div class="avatar" id="user-avatar">🎓</div>
            <div class="profile-name" id="user-name">游客用户</div>
            <div class="profile-level" id="user-level">Lv.5 学习达人</div>
            <div class="profile-stats">
                <div class="profile-stat"><div class="profile-stat-value">156</div><div class="profile-stat-label">学习天数</div></div>
                <div class="profile-stat"><div class="profile-stat-value">2,328</div><div class="profile-stat-label">已学词汇</div></div>
                <div class="profile-stat"><div class="profile-stat-value">89%</div><div class="profile-stat-label">正确率</div></div>
            </div>
        </div>
        <div class="profile-content">
            <div class="profile-card">
                <div class="menu-item" onclick="showPage('account-settings')">
                    <div class="menu-icon blue">💼</div>
                    <span class="menu-text">账号设置</span>
                    <span class="menu-arrow">></span>
                </div>
                <div class="menu-divider"></div>
                <div class="menu-item" onclick="showPage('learning-record')">
                    <div class="menu-icon green">📚</div>
                    <span class="menu-text">学习记录</span>
                    <span class="menu-arrow">></span>
                </div>
                <div class="menu-divider"></div>
                <div class="menu-item" onclick="showPage('achievement')">
                    <div class="menu-icon orange">🌟</div>
                    <span class="menu-text">我的成就</span>
                    <span class="menu-arrow">></span>
                </div>
                <div class="menu-divider"></div>
                <div class="menu-item" onclick="showPage('feedback')">
                    <div class="menu-icon purple">💬</div>
                    <span class="menu-text">意见反馈</span>
                    <span class="menu-arrow">></span>
                </div>
            </div>
            <div class="profile-card">
                <div class="menu-item" onclick="showPage('settings')">
                    <div class="menu-icon gray">⚙</div>
                    <span class="menu-text">设置</span>
                    <span class="menu-arrow">></span>
                </div>
                <div class="menu-divider"></div>
                <div class="menu-item" onclick="showPage('help')">
                    <div class="menu-icon red">❓</div>
                    <span class="menu-text">帮助中心</span>
                    <span class="menu-arrow">></span>
                </div>
            </div>
            <button class="logout-btn" id="logout-btn" onclick="handleLogout()">登录/注册</button>
        </div>
    </div>

    <!-- ===== 底部导航 ===== -->
    <div class="tab-bar">
        <div class="tab-item active" onclick="switchTab('home')">
            <svg viewBox="0 0 24 24"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9,22 9,12 15,12 15,22"/></svg>
            <span>首页</span>
        </div>
        <div class="tab-item" onclick="switchTab('word')">
            <svg viewBox="0 0 24 24"><path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"/><path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"/></svg>
            <span>单词</span>
        </div>
        <div class="tab-item" onclick="switchTab('profile')">
            <svg viewBox="0 0 24 24"><path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"/><circle cx="12" cy="7" r="4"/></svg>
            <span>我</span>
        </div>
    </div>

    <!-- ===== 二级页面：学习计划列表 ===== -->
    <div id="page-plan-list" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>学习计划</h1>
        </div>
        <div style="padding: 16px;">
            <div class="plan-card" style="margin-bottom: 12px;" onclick="showPlanDetail('cet4')">
                <div style="display: flex; align-items: center; gap: 12px;">
                    <div class="plan-icon cet4" style="margin-bottom: 0;">CET-4</div>
                    <div style="flex: 1;">
                        <div class="plan-name">四级词汇</div>
                        <div class="plan-progress">进度 65% · 已学1560词</div>
                        <div class="plan-progress-bar"><div class="plan-progress-fill" style="width: 65%"></div></div>
                    </div>
                </div>
            </div>
            <div class="plan-card" style="margin-bottom: 12px;" onclick="showPlanDetail('cet6')">
                <div style="display: flex; align-items: center; gap: 12px;">
                    <div class="plan-icon cet6" style="margin-bottom: 0;">CET-6</div>
                    <div style="flex: 1;">
                        <div class="plan-name">六级词汇</div>
                        <div class="plan-progress">进度 32% · 已学768词</div>
                        <div class="plan-progress-bar"><div class="plan-progress-fill" style="width: 32%"></div></div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- ===== 二级页面：计划详情 ===== -->
    <div id="page-plan-detail" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1 id="plan-detail-title-bar">四级词汇</h1>
        </div>
        <div class="plan-detail-header">
            <div class="plan-detail-icon" id="plan-detail-icon" style="background: linear-gradient(135deg, #E8F4FD, #D4EBFC);">📖</div>
            <div class="plan-detail-title" id="plan-detail-title-main">四级词汇</div>
            <div class="plan-detail-desc" id="plan-detail-desc">2400个核心词汇</div>
            <div class="progress-ring">
                <div class="progress-circle" id="progress-circle">
                    <div class="progress-inner">
                        <span class="progress-value" id="plan-progress-value">65%</span>
                        <span class="progress-label">完成进度</span>
                    </div>
                </div>
            </div>
            <div class="study-stats">
                <div class="stat-item"><div class="stat-value" id="stat-learned">1560</div><div class="stat-label">已学词汇</div></div>
                <div class="stat-item"><div class="stat-value" id="stat-remaining">840</div><div class="stat-label">剩余词汇</div></div>
                <div class="stat-item"><div class="stat-value" id="stat-days">21</div><div class="stat-label">计划天数</div></div>
            </div>
        </div>
        <div class="plan-actions">
            <button class="primary-btn" onclick="startLearn()">▶ 开始学习</button>
            <div class="plan-action-grid">
                <div class="plan-action-item" onclick="showPage('word-test')">
                    <div class="plan-action-icon">✏</div>
                    <div class="plan-action-name">单词自检</div>
                    <div class="plan-action-desc">检验学习成果</div>
                </div>
                <div class="plan-action-item" onclick="showPage('wordbook')">
                    <div class="plan-action-icon">📝</div>
                    <div class="plan-action-name">单词本</div>
                    <div class="plan-action-desc">收藏的单词</div>
                </div>
            </div>
        </div>
    </div>

    <!-- ===== 二级页面：单词背诵 ===== -->
    <div id="page-learn" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="closeLearn()">✖</span>
            <h1>正在学习</h1>
        </div>
        <div class="learn-progress-bar"><div class="learn-progress-fill" id="learn-progress-fill" style="width: 33%;"></div></div>
        <div class="learn-content">
            <div class="learn-word" id="learn-word">perseverance</div>
            <div class="learn-phonetic" id="learn-phonetic">[ˌpɜːsɪˈvɪərəns]</div>
            <div class="learn-meaning">
                <div class="meaning-item">
                    <span class="meaning-pos">n.</span>
                    <span class="meaning-text">坚持不懈；毅力</span>
                </div>
                <div class="meaning-item">
                    <span class="meaning-pos">adj.</span>
                    <span class="meaning-text">坚持的</span>
                </div>
            </div>
            <div class="learn-example">
                <div class="example-label">例句</div>
                <div class="example-text">Success is the result of perseverance.<br><span style="color: var(--text-light);">成功是坚持不懈的结果。</span></div>
            </div>
        </div>
        <div class="learn-buttons">
            <button class="learn-btn forgot" onclick="forgotWord()">✖ 认识模糊</button>
            <button class="learn-btn know" onclick="knowWord()">✔ 已掌握</button>
        </div>
    </div>

    <!-- ===== 二级页面：单词自检 ===== -->
    <div id="page-word-test" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>单词自检</h1>
        </div>
        <div class="test-card">
            <div class="test-progress">第 <span id="test-current">1</span> / <span id="test-total">10</span> 题</div>
            <div class="test-word" id="test-word">apple</div>
            <div class="test-phonetic" id="test-phonetic">[ˈæpəl]</div>
            <div class="test-options" id="test-options">
                <button class="test-option" onclick="selectAnswer(this, true)">n. 苹果</button>
                <button class="test-option" onclick="selectAnswer(this, false)">苹果公司</button>
                <button class="test-option" onclick="selectAnswer(this, false)">应用软件</button>
                <button class="test-option" onclick="selectAnswer(this, false)">向上</button>
            </div>
        </div>
        <div style="padding: 0 16px;">
            <button class="secondary-btn" onclick="goBack()">返回</button>
        </div>
    </div>

    <!-- ===== 二级页面：单词本 ===== -->
    <div id="page-wordbook" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>我的单词本</h1>
            <span class="header-action">⚙</span>
        </div>
        <div class="wordbook-tabs">
            <div class="wordbook-tab active">全部</div>
            <div class="wordbook-tab">已掌握</div>
            <div class="wordbook-tab">待复习</div>
        </div>
        <div class="wordbook-filter">
            <span class="filter-tag active">全部</span>
            <span class="filter-tag">四级</span>
            <span class="filter-tag">六级</span>
            <span class="filter-tag">最近添加</span>
        </div>
        <div class="word-list-item" onclick="showWordDetail('perseverance')">
            <div class="word-list-left">
                <div class="word-list-num">1</div>
                <div><div class="word-main-text">perseverance</div><div class="word-meaning">n. 坚持不懈</div></div>
            </div>
            <span class="word-arrow">✔</span>
        </div>
        <div class="word-list-item" onclick="showWordDetail('endeavor')">
            <div class="word-list-left">
                <div class="word-list-num">2</div>
                <div><div class="word-main-text">endeavor</div><div class="word-meaning">v. 努力尝试</div></div>
            </div>
            <span class="word-arrow">✔</span>
        </div>
        <div class="word-list-item" onclick="showWordDetail('resilience')">
            <div class="word-list-left">
                <div class="word-list-num">3</div>
                <div><div class="word-main-text">resilience</div><div class="word-meaning">n. 恢复力</div></div>
            </div>
            <span class="word-arrow">✔</span>
        </div>
        <div class="word-list-item" onclick="showWordDetail('ambition')">
            <div class="word-list-left">
                <div class="word-list-num">4</div>
                <div><div class="word-main-text">ambition</div><div class="word-meaning">n. 雄心壮志</div></div>
            </div>
            <span class="word-arrow">✔</span>
        </div>
        <div class="word-list-item" onclick="showWordDetail('integrity')">
            <div class="word-list-left">
                <div class="word-list-num">5</div>
                <div><div class="word-main-text">integrity</div><div class="word-meaning">n. 正直；完整</div></div>
            </div>
            <span class="word-arrow"></span>
        </div>
    </div>

    <!-- ===== 二级页面：单词详情 ===== -->
    <div id="page-word-detail" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>单词详情</h1>
        </div>
        <div class="word-detail-card">
            <div class="word-detail-header">
                <div>
                    <div class="word-detail-word" id="detail-word">apple</div>
                    <div class="word-detail-phonetic" id="detail-phonetic">美 [ˈæpəl] 英 [ˈæpəl]</div>
                </div>
                <div class="word-audio-btn">🔊</div>
            </div>
            <div class="word-meaning-section">
                <div class="meaning-item">
                    <span class="meaning-pos">n.</span>
                    <span class="meaning-text">苹果</span>
                </div>
                <div class="meaning-item">
                    <span class="meaning-pos">n.</span>
                    <span class="meaning-text">苹果树</span>
                </div>
            </div>
            <div class="word-example-section">
                <div class="word-example-label">例句</div>
                <div class="word-example-en">An apple a day keeps the doctor away.</div>
                <div class="word-example-cn">一天一苹果，医生远离我。</div>
            </div>
            <button class="add-to-bookmark" id="bookmark-btn" onclick="toggleBookmark()">+ 加入单词本</button>
        </div>
    </div>

    <!-- ===== 二级页面：打卡历史 ===== -->
    <div id="page-checkin-history" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>打卡历史</h1>
        </div>
        <div class="checkin-history">
            <div class="checkin-month">
                <div class="checkin-month-title">📅 2026年4月</div>
                <div class="checkin-days">
                    <div class="checkin-day checked"><span class="checkin-day-num">1</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">2</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">3</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">4</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">5</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">6</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">7</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">8</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">9</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">10</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">11</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">12</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">13</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">14</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">15</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">16</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">17</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">18</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">19</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">20</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">21</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day checked"><span class="checkin-day-num">22</span><span class="checkin-day-status">已打卡</span></div>
                    <div class="checkin-day today"><span class="checkin-day-num">23</span><span class="checkin-day-status">今日</span></div>
                </div>
            </div>
            <div class="checkin-summary">
                <div class="summary-title">🎉 本月打卡统计</div>
                <div class="summary-grid">
                    <div class="summary-item"><div class="summary-value">22</div><div class="summary-label">本月打卡</div></div>
                    <div class="summary-item"><div class="summary-value">7</div><div class="summary-label">连续天数</div></div>
                    <div class="summary-item"><div class="summary-value">98%</div><div class="summary-label">打卡率</div></div>
                </div>
            </div>
        </div>
    </div>

    <!-- ===== 二级页面：新闻列表 ===== -->
    <div id="page-news-list" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>英语新闻</h1>
        </div>
        <div class="news-list">
            <div class="news-list-item" onclick="showNewsDetail(0)">
                <div class="news-list-title">Apple Unveils New AI Features at WWDC 2026</div>
                <div class="news-list-meta">
                    <div class="news-list-tags"><span class="news-list-tag">科技</span><span class="news-list-tag">英语</span></div>
                    <span style="color: var(--text-light); font-size: 12px;">3分钟前</span>
                </div>
            </div>
            <div class="news-list-item" onclick="showNewsDetail(1)">
                <div class="news-list-title">Global Climate Summit Reaches Historic Agreement</div>
                <div class="news-list-meta">
                    <div class="news-list-tags"><span class="news-list-tag">环境</span><span class="news-list-tag">英语</span></div>
                    <span style="color: var(--text-light); font-size: 12px;">1小时前</span>
                </div>
            </div>
            <div class="news-list-item" onclick="showNewsDetail(2)">
                <div class="news-list-title">New Study Reveals Benefits of Learning Multiple Languages</div>
                <div class="news-list-meta">
                    <div class="news-list-tags"><span class="news-list-tag">教育</span><span class="news-list-tag">英语</span></div>
                    <span style="color: var(--text-light); font-size: 12px;">2小时前</span>
                </div>
            </div>
            <div class="news-list-item" onclick="showNewsDetail(3)">
                <div class="news-list-title">Space Tourism Industry Set to Launch First Commercial Flights</div>
                <div class="news-list-meta">
                    <div class="news-list-tags"><span class="news-list-tag">科技</span><span class="news-list-tag">英语</span></div>
                    <span style="color: var(--text-light); font-size: 12px;">3小时前</span>
                </div>
            </div>
            <div class="news-list-item" onclick="showNewsDetail(4)">
                <div class="news-list-title">Healthy Eating Trends: Mediterranean Diet Gains Popularity</div>
                <div class="news-list-meta">
                    <div class="news-list-tags"><span class="news-list-tag">健康</span><span class="news-list-tag">英语</span></div>
                    <span style="color: var(--text-light); font-size: 12px;">5小时前</span>
                </div>
            </div>
        </div>
    </div>

    <!-- ===== 二级页面：新闻详情 ===== -->
    <div id="page-news-detail" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>新闻详情</h1>
        </div>
        <div class="news-detail-header">
            <h2 class="news-detail-title" id="news-detail-title">Apple Unveils New AI Features at WWDC 2026</h2>
            <div class="news-detail-meta">
                <span style="color: var(--primary);">科技</span>  |  <span>英语阅读</span>  |  <span>5分钟</span>
            </div>
        </div>
        <div class="news-detail-image" id="news-detail-image">💻</div>
        <div class="news-detail-content" id="news-detail-content">
            <p>Apple announced a range of revolutionary AI features at this year's Worldwide Developers Conference. The new capabilities include advanced natural language processing, improved Siri responses, and innovative on-device machine learning.</p>
            <p>The company emphasized its commitment to privacy while delivering powerful AI experiences. All new features will process data locally on user devices, ensuring personal information remains secure.</p>
            <p>Developers will have access to new AI frameworks in the upcoming iOS update, allowing them to integrate these capabilities into their own applications.</p>
            <div class="news-detail-word">
                <div class="news-detail-word-title">📚 重点词汇</div>
                <div class="news-detail-word-item"><span class="news-word-en">revolutionary</span><span class="news-word-cn">adj. 革命性的</span></div>
                <div class="news-detail-word-item"><span class="news-word-en">capability</span><span class="news-word-cn">n. 能力</span></div>
                <div class="news-detail-word-item"><span class="news-word-en">privacy</span><span class="news-word-cn">n. 隐私</span></div>
                <div class="news-detail-word-item"><span class="news-word-en">innovative</span><span class="news-word-cn">adj. 创新的</span></div>
            </div>
        </div>
        <div style="padding: 0 16px;">
            <button class="news-translate-btn" onclick="showToast('中英文对照已开启')">🌐 中英文对照阅读</button>
        </div>
    </div>

    <!-- ===== 二级页面：账号设置 ===== -->
    <div id="page-account-settings" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>账号设置</h1>
        </div>
        <div class="account-section">
            <div class="account-item" style="justify-content: center; padding: 24px;">
                <div class="account-avatar" id="account-avatar">😎</div>
            </div>
            <div class="account-item" onclick="showToast('修改头像')">
                <span class="account-label">头像</span>
                <span class="account-value">点击修改 ></span>
            </div>
            <div class="account-item">
                <span class="account-label">昵称</span>
                <span class="account-value" id="account-name">英语学习者 ></span>
            </div>
            <div class="account-item">
                <span class="account-label">手机号</span>
                <span class="account-value">138****8888</span>
            </div>
        </div>
        <div class="account-section">
            <div class="account-item" onclick="showToast('绑定微信')">
                <span class="account-label">微信</span>
                <span class="account-value">未绑定 ></span>
            </div>
            <div class="account-item" onclick="showToast('绑定QQ')">
                <span class="account-label">QQ</span>
                <span class="account-value">未绑定 ></span>
            </div>
        </div>
        <div style="padding: 0 16px;">
            <button class="secondary-btn" style="background: white; color: var(--danger); border: 2px solid var(--danger);" onclick="showToast('账号安全')">账号安全</button>
        </div>
    </div>

    <!-- ===== 二级页面：学习记录 ===== -->
    <div id="page-learning-record" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>学习记录</h1>
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        <div class="record-tabs">
            <div class="record-tab active">日</div>
            <div class="record-tab">周</div>
            <div class="record-tab">月</div>
        </div>
        <div class="calendar-full">
            <div class="calendar-header">
                <span class="calendar-month">2026年4月</span>
                <div class="calendar-nav"><span>←</span><span>→</span></div>
            </div>
            <div class="calendar-grid">
                <div class="calendar-weekday">日</div><div class="calendar-weekday">一</div><div class="calendar-weekday">二</div><div class="calendar-weekday">三</div><div class="calendar-weekday">四</div><div class="calendar-weekday">五</div><div class="calendar-weekday">六</div>
                <div class="calendar-day-full empty"></div><div class="calendar-day-full empty"></div><div class="calendar-day-full checked">1</div><div class="calendar-day-full checked">2</div><div class="calendar-day-full checked">3</div><div class="calendar-day-full checked">4</div><div class="calendar-day-full checked">5</div>
                <div class="calendar-day-full checked">6</div><div class="calendar-day-full checked">7</div><div class="calendar-day-full checked">8</div><div class="calendar-day-full checked">9</div><div class="calendar-day-full checked">10</div><div class="calendar-day-full checked">11</div><div class="calendar-day-full checked">12</div>
                <div class="calendar-day-full checked">13</div><div class="calendar-day-full checked">14</div><div class="calendar-day-full checked">15</div><div class="calendar-day-full checked">16</div><div class="calendar-day-full checked">17</div><div class="calendar-day-full checked">18</div><div class="calendar-day-full checked">19</div>
                <div class="calendar-day-full checked">20</div><div class="calendar-day-full checked">21</div><div class="calendar-day-full checked">22</div><div class="calendar-day-full today">23</div><div class="calendar-day-full">24</div><div class="calendar-day-full">25</div><div class="calendar-day-full">26</div>
            </div>
        </div>
        <div class="content-card" style="margin: 0 16px;">
            <div class="summary-title">本周学习数据</div>
            <div class="record-stats">
                <div class="record-stat"><div class="record-stat-value">156</div><div class="record-stat-label">学习词汇</div></div>
                <div class="record-stat"><div class="record-stat-value">45</div><div class="record-stat-label">复习词汇</div></div>
                <div class="record-stat"><div class="record-stat-value">92%</div><div class="record-stat-label">正确率</div></div>
            </div>
        </div>
    </div>

    <!-- ===== 二级页面：我的成就 ===== -->
    <div id="page-achievement" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>我的成就</h1>
        </div>
        <div class="achievement-grid">
            <div class="achievement-item">
                <div class="achievement-icon">🌟</div>
                <div class="achievement-name">初露锋芒</div>
                <div class="achievement-desc">完成首个学习计划</div>
            </div>
            <div class="achievement-item">
                <div class="achievement-icon">🏆</div>
                <div class="achievement-name">坚持不懈</div>
                <div class="achievement-desc">连续打卡30天</div>
            </div>
            <div class="achievement-item">
                <div class="achievement-icon">👑</div>
                <div class="achievement-name">词汇大师</div>
                <div class="achievement-desc">掌握1000+词汇</div>
            </div>
            <div class="achievement-item locked">
                <div class="achievement-icon">🌞</div>
                <div class="achievement-name">学霸之光</div>
                <div class="achievement-desc">完成所有四级词汇</div>
            </div>
            <div class="achievement-item locked">
                <div class="achievement-icon">🏉</div>
                <div class="achievement-name">荣耀王者</div>
                <div class="achievement-desc">完成所有六级词汇</div>
            </div>
            <div class="achievement-item locked">
                <div class="achievement-icon">🌚</div>
                <div class="achievement-name">学无止境</div>
                <div class="achievement-desc">学习天数满365天</div>
            </div>
        </div>
    </div>

    <!-- ===== 二级页面：意见反馈 ===== -->
    <div id="page-feedback" class="page">
        <div class="header-bar">
            <span class="back-btn" onclick="goBack()">←</span>
            <h1>意见反馈</h1>
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        <div class="feedback-types">
            <div class="feedback-type active">功能建议</div>
            <div class="feedback-type">Bug反馈</div>
            <div class="feedback-type">体验问题</div>
            <div class="feedback-type">内容纠错</div>
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