/* About页面专用样式 */
.about-hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #e53e3e 0%, #f56565 100%);
    color: white;
    text-align: center;
}

.about-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-hero p {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.company-intro {
    padding: 100px 0;
    background: white;
}

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

.intro-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 30px;
    line-height: 1.2;
}

.intro-text p {
    font-size: 1.1rem;
    color: #718096;
    line-height: 1.8;
    margin-bottom: 25px;
}

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

.stat-item {
    text-align: center;
    padding: 20px;
    background: #f7fafc;
    border-radius: 12px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #e53e3e;
    display: block;
}

.stat-label {
    color: #718096;
    font-size: 0.9rem;
    margin-top: 5px;
}

.intro-image {
    background: linear-gradient(135deg, #e53e3e, #f56565);
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.intro-image i {
    font-size: 120px;
    color: white;
    opacity: 0.9;
}

.company-values {
    padding: 100px 0;
    background: #f7fafc;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.2rem;
    color: #718096;
    max-width: 600px;
    margin: 0 auto;
}

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

.value-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e53e3e, #f56565);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.value-icon i {
    font-size: 36px;
    color: white;
}

.value-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 15px;
}

.value-card p {
    color: #718096;
    line-height: 1.7;
}

.team-section {
    padding: 100px 0;
    background: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.team-member {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-member:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e53e3e, #f56565);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.member-avatar i {
    font-size: 36px;
    color: white;
}

.team-member h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 8px;
}

.position {
    color: #e53e3e;
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.team-member p {
    color: #718096;
    font-size: 0.95rem;
    line-height: 1.6;
}

.team-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.team-photo {
    height: 250px;
    background: linear-gradient(135deg, #4a5568, #718096);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.team-photo i {
    font-size: 80px;
    color: white;
    opacity: 0.8;
}

.team-info {
    padding: 25px;
    text-align: center;
}

.team-info h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 8px;
}

.team-position {
    color: #e53e3e;
    font-weight: 500;
    margin-bottom: 15px;
}

.team-info p {
    color: #718096;
    font-size: 0.95rem;
    line-height: 1.6;
}

.milestones {
    padding: 100px 0;
    background: #f7fafc;
}

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

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

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

.timeline-dot {
    width: 20px;
    height: 20px;
    background: #e53e3e;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    border: 4px solid white;
    box-shadow: 0 0 0 4px #e53e3e;
}

.timeline-content {
    flex: 1;
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin: 0 30px;
    position: relative;
    max-width: 45%;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 50%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: #e53e3e;
    margin-bottom: 10px;
}

.timeline-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 10px;
}

.timeline-desc {
    color: #718096;
    line-height: 1.6;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #e53e3e, #f56565);
    border-radius: 2px;
}

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

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

.timeline-content {
    flex: 1;
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin: 0 30px;
    position: relative;
}

.timeline-item:nth-child(odd) .timeline-content::after {
    content: '';
    position: absolute;
    right: -15px;
    top: 30px;
    width: 0;
    height: 0;
    border-left: 15px solid white;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
}

.timeline-item:nth-child(even) .timeline-content::after {
    content: '';
    position: absolute;
    left: -15px;
    top: 30px;
    width: 0;
    height: 0;
    border-right: 15px solid white;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: #e53e3e;
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1.1rem;
    z-index: 2;
}

.timeline-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 15px;
}

.timeline-content p {
    color: #718096;
    line-height: 1.7;
}

.certifications {
    padding: 100px 0;
    background: white;
}

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

.cert-item {
    background: #f7fafc;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.cert-item:hover {
    border-color: #e53e3e;
    background: white;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.cert-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e53e3e, #f56565);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.cert-icon i {
    font-size: 36px;
    color: white;
}

.cert-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 10px;
}

.cert-item p {
    color: #718096;
    font-size: 0.95rem;
}

.cert-card {
    background: #f7fafc;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.cert-card:hover {
    border-color: #e53e3e;
    background: white;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.cert-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e53e3e, #f56565);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.cert-icon i {
    font-size: 36px;
    color: white;
}

.cert-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 10px;
}

.cert-card p {
    color: #718096;
    font-size: 0.95rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2.5rem;
    }

    .intro-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .intro-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .intro-image {
        height: 300px;
        order: -1;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .values-grid,
    .team-grid,
    .cert-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-content {
        margin-left: 60px;
        margin-right: 0;
    }

    .timeline-content::after {
        left: -15px !important;
        right: auto !important;
        border-right: 15px solid white !important;
        border-left: none !important;
    }

    .timeline-year {
        left: 30px;
        transform: translateX(-50%);
    }
}

@media (max-width: 480px) {
    .about-hero h1 {
        font-size: 2rem;
    }

    .intro-text h2 {
        font-size: 2rem;
    }

    .value-card,
    .team-card,
    .cert-card {
        margin: 0 10px;
    }

    .timeline-content {
        margin-left: 50px;
        padding: 20px;
    }
}