/* FAQ页面样式 */

/* 导航样式 */
.faq-nav {
    background-color: #333333;
    border-radius: 10px;
    margin-bottom: 30px;
    padding: 15px;
}

.faq-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.faq-nav a {
    color: #cccccc;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.faq-nav a:hover {
    background-color: #667eea;
    color: white;
    border-color: #667eea;
}

/* 内容容器 */
.faq-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.faq-content {
    line-height: 1.8;
}

/* FAQ章节 */
.faq-section {
    margin-bottom: 50px;
    background-color: #111111;
    border-radius: 15px;
    padding: 30px;
}

.faq-section h2 {
    color: #667eea;
    font-size: 28px;
    margin-bottom: 25px;
    border-bottom: 2px solid #333333;
    padding-bottom: 10px;
}

/* FAQ项目 */
.faq-item {
    background: linear-gradient(135deg, #1a202c, #2d3748);
    border-radius: 12px;
    margin: 25px 0;
    border: 1px solid #4a5568;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* 问题样式 */
.faq-question {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    margin: 0;
    padding: 20px;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: linear-gradient(135deg, #5a67d8, #6b46c1);
}

/* 答案样式 */
.faq-answer {
    padding: 25px;
    background-color: #2d3748;
    color: #e2e8f0;
}

.faq-answer p {
    margin-bottom: 15px;
}

.faq-answer strong {
    color: #48bb78;
}

/* 步骤指导 */
.step-guide {
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    padding: 20px;
    margin: 15px 0;
    border-left: 4px solid #667eea;
}

.step-guide h4 {
    color: #667eea;
    margin-top: 0;
    margin-bottom: 15px;
}

.step-guide ol {
    margin: 0;
    padding-left: 20px;
}

.step-guide ol li {
    margin: 8px 0;
    line-height: 1.6;
}

/* 提示框 */
.tip {
    background: linear-gradient(135deg, #2b6cb0, #3182ce);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #90cdf4;
}

.tip strong {
    color: white;
}

/* 对比表格 */
.comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.method-compare {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 20px;
    border: 1px solid #4a5568;
}

.method-compare h4 {
    color: #48bb78;
    margin-top: 0;
    margin-bottom: 15px;
    text-align: center;
}

.method-compare ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.method-compare li {
    margin: 8px 0;
    padding: 8px;
    background-color: rgba(72, 187, 120, 0.1);
    border-radius: 4px;
    border-left: 3px solid #48bb78;
}

/* 推荐框 */
.recommendation {
    background: linear-gradient(135deg, #38a169, #48bb78);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #9ae6b4;
}

.recommendation strong {
    color: white;
}

/* 级别测试 */
.level-test {
    margin: 20px 0;
}

.level-option {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 15px 0;
    border-left: 4px solid #ed8936;
}

.level-option h4 {
    color: #ed8936;
    margin-top: 0;
    margin-bottom: 15px;
}

.level-option ul {
    margin: 0;
    padding-left: 20px;
}

.level-option li {
    margin: 6px 0;
    color: #cccccc;
}

/* 警告框 */
.warning {
    background: linear-gradient(135deg, #c53030, #e53e3e);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #feb2b2;
}

.warning strong {
    color: white;
}

/* 时间安排 */
.time-schedule {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.time-schedule h4 {
    color: #667eea;
    margin-top: 0;
    margin-bottom: 15px;
}

.time-breakdown {
    display: grid;
    gap: 10px;
    margin-top: 15px;
}

.time-breakdown > div {
    background-color: rgba(102, 126, 234, 0.1);
    padding: 10px;
    border-radius: 6px;
    border-left: 3px solid #667eea;
}

/* 原则框 */
.principle {
    background: linear-gradient(135deg, #38a169, #48bb78);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #9ae6b4;
}

.principle strong {
    color: white;
}

/* 沉默期说明 */
.silent-period-explanation {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.silent-period-explanation h4 {
    color: #ffa500;
    margin-top: 0;
}

.silent-period-explanation ul {
    margin: 15px 0;
    padding-left: 20px;
}

.silent-period-explanation li {
    margin: 8px 0;
    color: #cccccc;
}

/* 突破标志 */
.breakthrough-signs {
    background-color: rgba(255, 165, 0, 0.1);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #ffa500;
}

.breakthrough-signs h4 {
    color: #ffa500;
    margin-top: 0;
}

/* 进度指标 */
.progress-indicators {
    margin: 20px 0;
}

.progress-indicators h4 {
    color: #48bb78;
    margin-bottom: 10px;
    border-bottom: 1px solid #4a5568;
    padding-bottom: 5px;
}

.progress-indicators ul {
    background-color: rgba(72, 187, 120, 0.1);
    border-radius: 6px;
    padding: 15px;
    margin: 10px 0;
    border-left: 3px solid #48bb78;
}

/* 测量建议 */
.measurement-tip {
    background: linear-gradient(135deg, #2b6cb0, #3182ce);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #90cdf4;
}

.measurement-tip strong {
    color: white;
}

/* 慢进度分析 */
.slow-progress-analysis {
    margin: 20px 0;
}

.reason-item {
    background-color: #2a2a2a;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #ed8936;
}

.reason-item h5 {
    color: #ed8936;
    margin-top: 0;
    margin-bottom: 10px;
}

.reason-item p {
    margin: 8px 0;
    color: #cccccc;
}

/* 耐心提醒 */
.patience-reminder {
    background: linear-gradient(135deg, #38a169, #48bb78);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #9ae6b4;
}

.patience-reminder strong {
    color: white;
}

/* 使用指导 */
.usage-guide {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.usage-guide h4 {
    color: #667eea;
    margin-top: 0;
    margin-bottom: 15px;
}

.usage-guide ol {
    margin: 0;
    padding-left: 20px;
}

.usage-guide ol li {
    margin: 8px 0;
    color: #cccccc;
}

.usage-guide ul {
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: 6px;
    padding: 15px;
    margin: 10px 0;
    border-left: 3px solid #667eea;
}

/* 加载问题 */
.loading-issues {
    margin: 20px 0;
}

.issue-solution {
    background-color: #2a2a2a;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #f56565;
}

.issue-solution h5 {
    color: #f56565;
    margin-top: 0;
    margin-bottom: 10px;
}

.issue-solution ul {
    margin: 0;
    padding-left: 20px;
}

.issue-solution li {
    margin: 6px 0;
    color: #cccccc;
}

/* 优化建议 */
.optimization-tip {
    background: linear-gradient(135deg, #2b6cb0, #3182ce);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #90cdf4;
}

.optimization-tip strong {
    color: white;
}

/* 离线功能 */
.offline-features {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.offline-features h4 {
    color: #48bb78;
    margin-top: 0;
    margin-bottom: 15px;
}

.offline-features ul {
    margin: 10px 0;
    padding-left: 20px;
}

.offline-features li {
    margin: 6px 0;
    color: #cccccc;
}

/* 版权说明 */
.copyright-notice {
    background: linear-gradient(135deg, #c53030, #e53e3e);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #feb2b2;
}

.copyright-notice strong {
    color: white;
}

/* 理论解释 */
.theory-explanation {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.theory-explanation h4 {
    color: #667eea;
    margin-top: 0;
    margin-bottom: 15px;
}

.theory-explanation p {
    color: #cccccc;
    margin: 10px 0;
}

/* 条件卡片 */
.conditions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.condition {
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    padding: 15px;
    border-left: 4px solid #667eea;
}

.condition h5 {
    color: #667eea;
    margin-top: 0;
    margin-bottom: 10px;
}

.condition p {
    color: #cccccc;
    margin: 0;
    font-size: 14px;
}

/* 输入优先级 */
.input-priority {
    margin: 20px 0;
}

.principle-item {
    background-color: #2a2a2a;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #48bb78;
}

.principle-item h5 {
    color: #48bb78;
    margin-top: 0;
    margin-bottom: 10px;
}

.principle-item p {
    color: #cccccc;
    margin: 0;
}

/* 比例指导 */
.ratio-guide {
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
}

.ratio-bar {
    display: flex;
    border-radius: 20px;
    overflow: hidden;
    margin: 10px 0;
    height: 40px;
}

.input-bar {
    background: linear-gradient(135deg, #48bb78, #38a169);
    flex: 7;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.output-bar {
    background: linear-gradient(135deg, #ed8936, #dd6b20);
    flex: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* 石化解释 */
.fossilization-explanation {
    margin: 20px 0;
}

.fossilization-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.type-card {
    background: linear-gradient(135deg, #4a1f1f, #5a2828);
    border-radius: 8px;
    padding: 15px;
    border-left: 4px solid #f56565;
}

.type-card h5 {
    color: #f56565;
    margin-top: 0;
    margin-bottom: 10px;
}

.type-card p {
    color: #cccccc;
    margin: 5px 0;
    font-size: 14px;
}

/* 预防方法 */
.prevention-methods {
    background-color: rgba(72, 187, 120, 0.1);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #48bb78;
    list-style: none;
}

.prevention-methods li {
    margin: 8px 0;
    color: #cccccc;
}

/* 新概念价值 */
.nce-value {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.nce-value h4 {
    color: #48bb78;
    margin-top: 0;
    margin-bottom: 15px;
}

.nce-value ul {
    margin: 10px 0;
    padding-left: 20px;
}

.nce-value li {
    margin: 8px 0;
    color: #cccccc;
}

/* 学习方法 */
.learning-approach {
    margin: 15px 0;
}

.learning-approach h5 {
    color: #667eea;
    margin: 15px 0 8px 0;
}

.learning-approach p {
    color: #cccccc;
    margin: 8px 0;
    font-size: 14px;
}

/* 记忆指导 */
.memorization-guide {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.memorization-approach {
    margin: 20px 0;
}

.memorization-approach h5 {
    margin: 15px 0 10px 0;
}

.memorization-approach ul {
    margin: 5px 0;
    padding-left: 20px;
}

.memorization-approach li {
    margin: 5px 0;
    color: #cccccc;
    font-size: 14px;
}

/* 记忆提示 */
.memory-tip {
    background: linear-gradient(135deg, #2b6cb0, #3182ce);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #90cdf4;
}

.memory-tip strong {
    color: white;
}

/* 流利期望 */
.fluency-expectation {
    background-color: #2a2a2a;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.fluency-expectation h4 {
    color: #48bb78;
    margin-top: 0;
    margin-bottom: 15px;
}

.additional-needs {
    margin: 20px 0;
}

.additional-needs h5 {
    color: #ed8936;
    margin: 15px 0 10px 0;
}

.additional-needs ul {
    margin: 5px 0;
    padding-left: 20px;
}

.additional-needs li {
    margin: 5px 0;
    color: #cccccc;
    font-size: 14px;
}

/* 时间期望 */
.time-expectation {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.phase {
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    padding: 15px;
    border-left: 4px solid #667eea;
}

.phase h5 {
    color: #667eea;
    margin-top: 0;
    margin-bottom: 8px;
}

.phase p {
    color: #cccccc;
    margin: 0;
    font-size: 14px;
}

/* 现实期望 */
.realistic-expectation {
    background: linear-gradient(135deg, #38a169, #48bb78);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #9ae6b4;
}

.realistic-expectation strong {
    color: white;
}

/* FAQ链接 */
.faq-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
}

.faq-links a {
    color: #667eea;
    text-decoration: none;
    padding: 10px 20px;
    border: 1px solid #667eea;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.faq-links a:hover {
    background-color: #667eea;
    color: white;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .faq-container {
        padding: 15px;
    }

    .faq-section {
        padding: 20px;
    }

    .faq-nav ul {
        flex-direction: column;
        align-items: center;
    }

    .comparison {
        grid-template-columns: 1fr;
    }

    .conditions {
        grid-template-columns: 1fr;
    }

    .fossilization-types {
        grid-template-columns: 1fr;
    }

    .time-expectation {
        grid-template-columns: 1fr;
    }

    .faq-links {
        flex-direction: column;
        align-items: center;
    }

    .faq-question {
        font-size: 18px;
        padding: 15px;
    }

    .faq-answer {
        padding: 20px;
    }
}