/* 关于我们页面样式 */

.about-header {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--bg-white);
    overflow: hidden;
    margin-top: 70px;
}

.about-header .header-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.about-header .header-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-header .header-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.85), rgba(63, 81, 181, 0.7));
}

.about-header .header-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.about-header h1 {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.about-header p {
    font-size: 20px;
    color: var(--secondary-color);
}

.company-intro {
    padding: 80px 0;
    background: var(--bg-white);
}

.intro-content {
    max-width: 900px;
    margin: 0 auto 60px;
    text-align: center;
}

.intro-content h2 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.intro-content p {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-box {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-light);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    background: var(--primary-color);
    color: var(--bg-white);
}

.stat-box:hover .stat-number,
.stat-box:hover .stat-label {
    color: var(--bg-white);
}

.stat-number {
    font-size: 42px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: var(--text-light);
}

.company-history {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 50px auto 0;
    padding: 0 20px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    width: 100px;
    height: 100px;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    padding: 30px;
    background: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin: 0 40px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.timeline-content h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.8;
}

.team-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.team-member {
    text-align: center;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    background: var(--bg-white);
}

.member-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid var(--primary-color);
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.member-role {
    font-size: 16px;
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 15px;
}

.member-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.qualifications {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.qualification-item {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.qualification-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.qual-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.qualification-item h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.qualification-item p {
    color: var(--text-light);
    line-height: 1.6;
}

.contact-preview {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--bg-white);
    text-align: center;
}

.contact-preview h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.contact-preview p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .about-header {
        height: 300px;
    }

    .about-header h1 {
        font-size: 28px;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }

    .timeline-year {
        position: absolute;
        left: 0;
        width: 60px;
        height: 60px;
        font-size: 18px;
    }

    .timeline-content {
        margin: 0;
    }

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

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