/* 协会概况页面样式 */

/* 页面标题区 */
.page-title {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    padding: 60px 0;
    margin-bottom: 0;
}

.page-title h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
}

.breadcrumb {
    font-size: 16px;
    opacity: 0.9;
}

.breadcrumb a {
    color: #fff;
}

.breadcrumb span {
    opacity: 0.7;
}

/* 协会简介 */
.about-intro {
    padding: 80px 0;
    background: #f9f9f9;
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    padding-right: 20px;
}

.about-text .section-header {
    margin-bottom: 30px;
}

.section-header h2 {
    font-size: 36px;
    color: #1e3c72;
    font-weight: 700;
    margin-bottom: 10px;
}

.section-header p {
    font-size: 16px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

/* 协会宗旨 */
.mission-section {
    padding: 80px 0;
    background: #fff;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.mission-item {
    background: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
}

.mission-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.mission-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.mission-item h3 {
    font-size: 20px;
    color: #1e3c72;
    margin-bottom: 15px;
    font-weight: 600;
}

.mission-item p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 组织架构 */
.organization-section {
    padding: 80px 0;
    background: #f9f9f9;
}

.org-structure {
    background: #fff;
    padding: 50px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.org-level {
    padding: 30px 0;
    border-bottom: 1px solid #e0e0e0;
}

.org-level:last-child {
    border-bottom: none;
}

.org-level h3 {
    font-size: 24px;
    color: #1e3c72;
    margin-bottom: 15px;
    font-weight: 600;
}

.org-president p,
.org-directors p,
.org-departments h4 {
    font-size: 18px;
    color: #333;
    font-weight: 600;
    margin-bottom: 10px;
}

.org-items {
    margin-top: 20px;
}

.org-item {
    padding: 15px;
    background: #f8f9fa;
    border-radius: 5px;
    margin-bottom: 10px;
}

.org-item h4 {
    font-size: 16px;
    color: #1e3c72;
    margin-bottom: 5px;
}

.org-item p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.org-item span {
    font-size: 14px;
    color: #999;
}

/* 发展历程 */
.history-section {
    padding: 80px 0;
    background: #fff;
}

.timeline {
    margin-top: 40px;
}

.timeline-item {
    display: flex;
    gap: 30px;
    padding: 30px 0;
    border-bottom: 1px solid #e0e0e0;
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-year {
    width: 120px;
    font-size: 24px;
    color: #1e3c72;
    font-weight: 700;
    text-align: right;
}

.timeline-content {
    flex: 1;
}

.timeline-content h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
    font-weight: 600;
}

.timeline-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 联系CTA */
.contact-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    text-align: center;
}

.contact-cta h2 {
    font-size: 32px;
    margin-bottom: 15px;
    font-weight: 600;
}

.contact-cta p {
    font-size: 16px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-primary {
    background: #fff;
    color: #1e3c72;
    padding: 15px 40px;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

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

    .org-structure {
        padding: 30px 20px;
    }

    .timeline-item {
        flex-direction: column;
        gap: 15px;
    }

    .timeline-year {
        text-align: left;
    }

    .page-title h1 {
        font-size: 32px;
    }

    .section-header h2 {
        font-size: 28px;
    }
}