/* 社会责任页面样式 */

/* Hero 区域 */
.charity-hero {
    padding: 120px 40px 60px;
    text-align: center;
    background: var(--bg-primary);
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 介绍区域 */
.charity-intro {
    padding: 80px 40px;
    background: var(--bg-primary);
}

.charity-intro .container {
    max-width: 1400px;
    margin: 0 auto;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.intro-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
}

.intro-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 公益领域 */
.charity-areas {
    padding: 100px 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.charity-areas .container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.area-card {
    background: var(--bg-card);
    padding: 50px 40px;
    border: 1px solid var(--border);
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.area-icon {
    font-size: 48px;
    margin-bottom: 25px;
}

.area-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
}

.area-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.6;
}

.area-card ul {
    list-style: none;
    text-align: left;
}

.area-card li {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.area-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--text-primary);
}

/* 项目时间线 */
.charity-projects {
    padding: 100px 40px;
    background: var(--bg-primary);
}

.charity-projects .container {
    max-width: 1000px;
    margin: 0 auto;
}

.projects-timeline {
    position: relative;
}

.project-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 40px;
    padding: 40px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
    margin-bottom: 20px;
}

.project-date {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 1px;
}

.project-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.project-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 统计数据 */
.charity-stats {
    padding: 100px 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.charity-stats .container {
    max-width: 1400px;
    margin: 0 auto;
}

.charity-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.charity-stats .stat-item {
    padding: 40px;
}

.charity-stats .stat-number {
    display: block;
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 10px;
}

.charity-stats .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .areas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .charity-stats .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 36px;
    }
    
    .intro-text h2,
    .section-title {
        font-size: 28px;
    }
    
    .areas-grid {
        grid-template-columns: 1fr;
    }
    
    .project-item {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .charity-stats .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .charity-stats .stat-number {
        font-size: 36px;
    }
}