/**
 * About Page Styles
 * Custom styles for the About page
 * Visual style unified with OEM page
 */

/* Color Palette - Unified with OEM */
:root {
    --about-primary: #2563eb;
    --about-primary-dark: #1d4ed8;
    --about-primary-light: #eff6ff;
    --about-secondary: #10b981;
    --about-text-primary: #111827;
    --about-text-secondary: #4b5563;
    --about-text-muted: #6b7280;
    --about-bg-light: #f9fafb;
    --about-bg-white: #ffffff;
    --about-border: #e5e7eb;
    --about-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --about-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --about-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --about-radius-sm: 0.25rem;
    --about-radius-md: 0.5rem;
    --about-radius-lg: 0.75rem;
    --about-radius-xl: 1rem;
}

/* Hero Section */
.about-hero-section {
    background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 50%, #eff6ff 100%);
    padding: 100px 0 80px;
    position: relative;
}

.about-hero-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4rem;
    justify-content: space-between;
}

.about-hero-text {
    flex: 1 1 450px;
    max-width: 650px;
    padding-right: 1rem;
}

.about-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--about-primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 9999px;
    margin-bottom: 1.75rem;
}

.about-hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--about-text-primary);
    line-height: 1.25;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.about-hero-subtitle {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--about-secondary);
    margin-bottom: 1.75rem;
    line-height: 1.4;
}

.about-hero-desc {
    font-size: 1.0625rem;
    color: var(--about-text-secondary);
    line-height: 1.85;
    margin-bottom: 2.25rem;
}

.about-hero-desc p {
    margin-bottom: 1.25rem;
}

.about-hero-desc p:last-child {
    margin-bottom: 0;
}

.about-hero-desc strong {
    color: var(--about-text-primary);
    font-weight: 600;
}

.about-hero-image {
    flex: 0 0 420px;
    max-width: 480px;
    position: relative;
    width: 100%;
}

.about-hero-image::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
    border-radius: 1.5rem;
    z-index: 0;
}

.about-hero-image img {
    position: relative;
    width: 100%;
    height: auto;
    border-radius: 1.25rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    z-index: 1;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.about-hero-image:hover img {
    transform: translateY(-8px);
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.15);
}

/* Stats Section */
.about-stats-section {
    padding: 4rem 0;
    background-color: var(--about-bg-white);
}

.about-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.about-stat-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background-color: var(--about-bg-light);
    border-radius: var(--about-radius-xl);
    transition: all 0.3s ease;
}

.about-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--about-shadow-lg);
}

.about-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--about-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.about-stat-label {
    font-size: 1rem;
    color: var(--about-text-secondary);
    margin: 0;
    font-weight: 500;
}

/* Section Header */
.about-section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.about-section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--about-text-primary);
    margin-bottom: 1rem;
}

.about-section-desc {
    font-size: 1rem;
    color: var(--about-text-secondary);
    line-height: 1.75;
    max-width: 700px;
    margin: 0 auto;
}

/* Values Section */
.about-values-section {
    padding: 6rem 0;
    background-color: var(--about-bg-light);
}

.about-values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.about-value-card {
    background-color: #ffffff;
    border-radius: var(--about-radius-xl);
    overflow: hidden;
    box-shadow: var(--about-shadow-sm);
    transition: all 0.3s ease;
}

.about-value-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-value-image {
    position: relative;
    overflow: hidden;
    height: 140px;
    background-color: #ffffff;
}

.about-value-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    padding: 1rem;
    transition: transform 0.5s ease;
}

.about-value-card:hover .about-value-image img {
    transform: scale(1.05);
}

.about-value-content {
    padding: 1.25rem 1.5rem 1.5rem;
    text-align: center;
}

.about-value-content h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--about-text-primary);
    margin-bottom: 0.875rem;
}

.about-value-content p {
    font-size: 0.875rem;
    color: var(--about-text-secondary);
    line-height: 1.6;
    margin: 0;
    text-align: center;
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
    .about-hero-content {
        gap: 3rem;
    }
    
    .about-hero-image {
        flex: 0 0 380px;
    }
    
    .about-hero-title {
        font-size: 2.25rem;
    }
}

@media (max-width: 992px) {
    .about-hero-content {
        gap: 2.5rem;
        flex-direction: column-reverse;
    }
    
    .about-hero-text {
        flex: 1 1 100%;
        max-width: 100%;
        padding-right: 0;
        text-align: center;
    }
    
    .about-badge,
    .about-hero-title,
    .about-hero-subtitle {
        text-align: center;
    }
    
    .about-hero-desc {
        text-align: left;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .about-hero-desc p {
        text-align: left;
    }
    
    .about-hero-image {
        flex: 0 0 350px;
        max-width: 420px;
        width: 100%;
        margin: 0 auto;
    }
    
    .about-hero-title {
        font-size: 2rem;
    }
    
    .about-hero-subtitle {
        font-size: 1.25rem;
    }
    
    .about-section-title {
        font-size: 1.75rem;
    }
    
    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-value-image {
        height: 120px;
    }
    
    .about-value-content h3 {
        font-size: 1.25rem;
    }
}

@media (max-width: 768px) {
    .about-hero-section {
        padding: 70px 0 50px;
    }
    
    .about-hero-title {
        font-size: 1.625rem;
    }
    
    .about-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .about-hero-desc {
        font-size: 1rem;
    }
    
    .about-hero-image {
        flex: 0 0 280px;
        max-width: 350px;
    }
    
    .about-stat-number {
        font-size: 2rem;
    }
    
    .about-values-grid {
        grid-template-columns: 1fr;
    }
    
    .about-value-image {
        height: 130px;
    }
    
    .about-value-content h3 {
        font-size: 1.3125rem;
    }
}

@media (max-width: 576px) {
    .about-hero-section {
        padding: 50px 0 30px;
    }
    
    .about-hero-title {
        font-size: 1.375rem;
    }
    
    .about-badge {
        font-size: 0.75rem;
        padding: 0.375rem 1rem;
    }
    
    .about-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stat-card {
        padding: 1.5rem 1rem;
    }
    
    .about-stat-number {
        font-size: 1.75rem;
    }
}
/**
 * About页面特定样式 - about.css
 * 包含About页面专有的组件和区块样式
 * 加载顺序：在layout.css之后，responsive.css之前
 */

/* ========== Hero区域样式 ========== */
.about-hero {
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

/* ========== 团队卡片样式 ========== */
.team-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* ========== 时间线样式 ========== */
.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: #e0e0e0;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 20px 40px;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border: 3px solid #2563eb;
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.timeline-item.left {
    left: 0;
}

.timeline-item.left::after {
    right: -11px;
}

.timeline-item.right {
    left: 50%;
}

.timeline-item.right::after {
    left: -9px;
}

.timeline-content {
    background-color: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.timeline-content .year {
    display: inline-block;
    background-color: #2563eb;
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-content h3 {
    color: #1f2937;
    margin-bottom: 8px;
}

.timeline-content p {
    color: #6b7280;
    font-size: 14px;
    line-height: 1.6;
}