/* ============================================
   关于我们页面样式
   ============================================ */

/* Hero区域 */
.about-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    padding: 120px 5% 80px;
    overflow: hidden;
}

.about-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.city-grid {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 50% 50%, 
            rgba(13, 17, 23, 0.98) 0%, 
            rgba(13, 17, 23, 0.95) 30%,
            transparent 70%
        ),
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 100% 100%, 60px 60px, 60px 60px;
    opacity: 0.1;
}

.stars-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 50% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(1px 1px at 20% 30%, #00D4FF, transparent),
        radial-gradient(1px 1px at 40% 70%, #00D4FF, transparent),
        radial-gradient(1px 1px at 60% 20%, #00D4FF, transparent),
        radial-gradient(1px 1px at 80% 60%, #00D4FF, transparent),
        radial-gradient(1px 1px at 10% 80%, #00D4FF, transparent),
        radial-gradient(1px 1px at 90% 40%, #00D4FF, transparent);
}

.shield-pattern {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 50% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
}

.about-hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    text-align: center;
}

.about-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.about-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.8;
}

.about-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.about-nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.3s ease;
}

.about-nav-link:hover {
    color: var(--color-accent-primary);
}

.about-nav .nav-separator {
    color: var(--color-border);
}

/* 通用区块样式 */
.about-section {
    padding: 80px 5%;
}

.about-section.alt-bg {
    background: #0F1419;
}

.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-accent-primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text-primary);
}

/* 企业概况 */
.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.overview-text {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.stats-row {
    display: flex;
    gap: 48px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-top: 8px;
}

.overview-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.company-visual {
    width: 100%;
    max-width: 400px;
    filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.2));
}

/* 发展历程时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-accent-primary), transparent);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 48px;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
    padding-right: calc(50% + 40px);
    text-align: right;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: calc(50% + 40px);
    text-align: left;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 20px;
    background: var(--color-accent-primary);
    border-radius: 24px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-bg);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

.team-card {
    padding: 32px 24px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.team-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
}

.team-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 212, 255, 0.05));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-placeholder {
    font-size: 2.5rem;
}

.team-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.team-title {
    font-size: 0.875rem;
    color: var(--color-accent-primary);
    margin-bottom: 12px;
}

.team-desc {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

/* 办公网络 */
.locations-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.location-card {
    padding: 32px 24px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.location-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
}

.location-card.hq {
    border-color: var(--color-accent-primary);
    background: linear-gradient(135deg, #161B22, rgba(0, 212, 255, 0.05));
}

.location-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
}

.location-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.location-card p {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

.location-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 12px;
    background: var(--color-accent-primary);
    border-radius: 12px;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--color-bg);
}

/* 使命愿景页面 */
.mission-vision-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.mv-card {
    padding: 48px 40px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.mv-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
}

.mv-icon {
    font-size: 3rem;
    margin-bottom: 24px;
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
}

.mv-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.mv-desc {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* 核心价值观 */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.value-card {
    padding: 32px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.value-card:hover {
    border-color: var(--color-accent-primary);
}

.value-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: rgba(0, 212, 255, 0.2);
    line-height: 1;
    margin-bottom: 16px;
}

.value-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.value-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 经营理念 */
.philosophy-content {
    max-width: 900px;
    margin: 0 auto;
}

.philosophy-item {
    display: flex;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid var(--color-border);
}

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

.phil-icon {
    width: 64px;
    height: 64px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
}

.phil-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.phil-text p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 文化特色 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.culture-card {
    padding: 40px 24px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.culture-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
}

.culture-visual {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.culture-svg {
    width: 100%;
    height: 100%;
}

.culture-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.culture-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 社会责任 */
.csr-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.csr-card {
    padding: 32px 24px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.csr-card:hover {
    border-color: var(--color-accent-primary);
}

.csr-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
}

.csr-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.csr-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 资质合规页面 */
.cert-overview {
    padding: 48px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 212, 255, 0.02));
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
}

.cert-stat-row {
    display: flex;
    justify-content: space-around;
}

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

.cert-stat-num {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.cert-stat-label {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
}

/* 资质卡片 */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.cert-card {
    padding: 32px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.cert-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
}

.cert-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--color-accent-primary);
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-bg);
    margin-bottom: 16px;
}

.cert-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.cert-code {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin-bottom: 12px;
}

.cert-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ISO认证卡片 */
.iso-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.iso-card {
    padding: 32px 24px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.iso-card:hover {
    border-color: var(--color-accent-primary);
}

.iso-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.iso-svg {
    width: 100%;
    height: 100%;
}

.iso-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.iso-subtitle {
    font-size: 0.875rem;
    color: var(--color-accent-primary);
    margin-bottom: 16px;
}

.iso-desc {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.iso-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--color-accent-primary);
}

/* 合规管理 */
.compliance-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px;
}

.compliance-intro p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

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

.compliance-card {
    padding: 32px 24px;
    background: #161B22;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.compliance-card:hover {
    border-color: var(--color-accent-primary);
}

.compliance-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
}

.compliance-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.compliance-card ul {
    list-style: none;
    padding: 0;
}

.compliance-card li {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    padding: 6px 0;
    padding-left: 16px;
    position: relative;
}

.compliance-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
}

/* 响应式 */
@media (max-width: 1200px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .locations-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .csr-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .iso-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .compliance-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .about-hero {
        min-height: 50vh;
        padding: 100px 5% 60px;
    }
    
    .overview-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .stats-row {
        justify-content: center;
    }
    
    .mission-vision-grid {
        grid-template-columns: 1fr;
    }
    
    .philosophy-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .about-nav {
        flex-wrap: wrap;
    }
    
    .stats-row {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .stat-item {
        flex: 1 1 40%;
    }
    
    .timeline::before {
        left: 24px;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        flex-direction: row;
        padding-left: 64px;
        padding-right: 0;
        text-align: left;
    }
    
    .timeline-marker {
        left: 24px;
        transform: none;
        padding: 8px 14px;
        font-size: 0.875rem;
    }
    
    .team-grid,
    .locations-grid,
    .values-grid,
    .culture-grid,
    .csr-grid,
    .cert-grid,
    .iso-grid,
    .compliance-grid {
        grid-template-columns: 1fr;
    }
    
    .cert-stat-row {
        flex-wrap: wrap;
        gap: 32px;
    }
    
    .cert-stat {
        flex: 1 1 40%;
    }
}