/* ========================================
   关于页面样式
   ======================================== */

/* 页面标题区 */
.page-hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #0066CC 0%, #0052a3 100%);
    text-align: center;
}

.page-title {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.page-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
}

/* 通用区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 公司简介 */
.about-section {
    padding: 80px 0;
    background: #fff;
}

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

.intro-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, #e8f4fc 0%, #d0e8f7 100%);
}

.intro-image img {
    width: 85%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.intro-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-placeholder svg {
    width: 100px;
    height: 100px;
    stroke: var(--color-primary);
    opacity: 0.3;
}

.intro-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.intro-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid #eee;
}

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

.stat-num {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 发展历程 */
.timeline-section {
    padding: 80px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #eef3f8 100%);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-primary), rgba(0, 102, 204, 0.15));
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 48px);
    margin-bottom: 36px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.05s; }
.timeline-item:nth-child(2) { animation-delay: 0.1s; }
.timeline-item:nth-child(3) { animation-delay: 0.15s; }
.timeline-item:nth-child(4) { animation-delay: 0.2s; }
.timeline-item:nth-child(5) { animation-delay: 0.25s; }
.timeline-item:nth-child(6) { animation-delay: 0.3s; }
.timeline-item:nth-child(7) { animation-delay: 0.35s; }
.timeline-item:nth-child(8) { animation-delay: 0.4s; }
.timeline-item:nth-child(9) { animation-delay: 0.45s; }
.timeline-item:nth-child(10) { animation-delay: 0.5s; }
.timeline-item:nth-child(11) { animation-delay: 0.55s; }
.timeline-item:nth-child(12) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 48px);
}

.timeline-item:hover {
    z-index: 2;
}

.timeline-item:hover .timeline-content {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 102, 204, 0.15);
    border-color: rgba(0, 102, 204, 0.3);
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 24px;
    width: 18px;
    height: 18px;
    background: #fff;
    border: 3px solid var(--color-primary);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 1;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-dot {
    background: var(--color-primary);
    box-shadow: 0 0 0 6px rgba(0, 102, 204, 0.15);
}

.timeline-content {
    background: #fff;
    padding: 28px 28px;
    border-radius: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    max-width: 380px;
    border: 1px solid transparent;
    transition: all 0.35s ease;
}

.timeline-year {
    display: inline-block;
    padding: 4px 14px;
    background: linear-gradient(135deg, #0066CC, #0052a3);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    border-radius: 6px;
    margin-bottom: 14px;
    letter-spacing: 1px;
}

.timeline-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 资质荣誉 */
.honors-section {
    padding: 80px 0;
    background: #fff;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.honor-card {
    text-align: center;
    padding: 40px 24px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.honor-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 102, 204, 0.1);
}

.honor-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(0, 102, 204, 0.05) 100%);
    border-radius: 16px;
}

.honor-icon svg {
    width: 36px;
    height: 36px;
    stroke: var(--color-primary);
}

.honor-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.honor-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 团队介绍 */
.team-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    background: #fff;
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 102, 204, 0.1);
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    background: linear-gradient(135deg, #e8f4fc 0%, #d0e8f7 100%);
}

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

.team-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.team-placeholder svg {
    width: 48px;
    height: 48px;
    stroke: var(--color-primary);
    opacity: 0.4;
}

.team-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.team-position {
    display: block;
    font-size: 14px;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.team-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 响应式 */
@media (max-width: 991px) {
    .about-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 56px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .timeline-content {
        max-width: 100%;
    }
}

@media (max-width: 767px) {
    .page-hero {
        padding: 90px 0 40px;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .intro-title {
        font-size: 24px;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-num {
        font-size: 24px;
    }
    
    .honors-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .honor-card {
        padding: 24px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}