/* 英雄区域 */
.about-hero {
    background: linear-gradient(135deg, var(--primary) 0%, #0d2340 100%);
    color: white;
    padding: 120px 20px 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 25px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 22px;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

/* 使命愿景部分 */
.mission-section {
    padding: 100px 20px;
    background-color: #f9fafc;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: 60px;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.mission-card {
    background: white;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.mission-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.mission-icon {
    font-size: 48px;
    color: var(--secondary);
    margin-bottom: 25px;
    display: block;
}

.mission-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
}

.mission-description {
    color: var(--gray);
    line-height: 1.6;
}

/* 核心价值观 */
.values-section {
    padding: 100px 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.value-item {
    background: white;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    border-top: 4px solid var(--accent);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.value-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 20px;
}

.value-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 15px;
}

.value-description {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.5;
}

/* 团队介绍 */
.team-section {
    padding: 100px 20px;
    background-color: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.team-member {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.member-avatar {
    height: 250px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 60px;
    font-weight: 700;
    background-size: cover;
    background-position: center;
}

.member-info {
    padding: 30px;
}

.member-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.member-role {
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 16px;
}

.member-bio {
    color: var(--gray);
    line-height: 1.6;
    font-size: 15px;
}

/* 发展历程 */
.timeline-section {
    padding: 100px 20px;
    background-color: #f9fafc;
}

.timeline {
    max-width: 800px;
    margin: 50px auto 0;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--secondary));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    width: 50%;
    padding-right: 40px;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 40px;
}

.timeline-dot {
    position: absolute;
    right: -10px;
    top: 0;
    width: 20px;
    height: 20px;
    background: white;
    border: 3px solid var(--accent);
    border-radius: 50%;
    z-index: 1;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -10px;
    right: auto;
}

.timeline-year {
    color: var(--accent);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
}

.timeline-content {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.timeline-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
}

.timeline-description {
    color: var(--gray);
    line-height: 1.6;
}

/* 数字成就 */
.stats-section {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--primary), #0d2340);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--secondary);
    display: block;
    margin-bottom: 15px;
}

.stat-label {
    font-size: 18px;
    opacity: 0.9;
}

/* 联系我们 */
.contact-section {
    padding: 100px 20px;
    background-color: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.contact-info {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 15px;
    padding: 40px;
}

.contact-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 30px;
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 24px;
    color: var(--accent);
    margin-right: 15px;
    width: 30px;
}

.contact-text h4 {
    color: var(--primary);
    margin-bottom: 5px;
    font-size: 18px;
}

.contact-text p {
    color: var(--gray);
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 0;
    }
    
    .timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: 60px;
    }
    
    .timeline-dot {
        left: 20px;
        right: auto;
    }
    
    .timeline-item:nth-child(even) .timeline-dot {
        left: 20px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .mission-grid,
    .values-grid,
    .team-grid,
    .stats-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 36px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .mission-card,
    .value-item,
    .team-member {
        padding: 25px;
    }
    
    .stat-number {
        font-size: 32px;
    }
}