/* ========== 关于我们页面 ========== */
.about-page {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 14px 30px;
}

/* 头部 */
.about-hero {
    text-align: center;
    padding: 60px 24px;
    background: linear-gradient(135deg, var(--accent-light), var(--bg-secondary));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: var(--accent);
    opacity: 0.05;
    border-radius: 50%;
    pointer-events: none;
}

.about-hero-icon {
    width: 80px;
    height: 80px;
    border-radius: 24px;
    background: var(--accent);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
    
}

.about-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.about-slogan {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 数据统计 */
.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

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

.stat-card i {
    font-size: 1.6rem;
    color: var(--accent);
    margin-bottom: 10px;
    display: block;
}

.stat-card strong {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-card span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* 内容区块 */
.about-section {
    margin-bottom: 40px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
    padding: 8px 18px;
    background: var(--accent-light);
    border-radius: 20px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow);
    line-height: 1.9;
    font-size: 1.05rem;
}

.about-card p {
    margin-bottom: 1.2em;
}

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

/* 作者卡片 */
.about-author {
    display: flex;
    align-items: center;
    gap: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.author-avatar img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 4px solid var(--accent-light);
    padding: 4px;
    background: var(--bg-card);
    display: block;
}

.author-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.author-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.author-contact {
    display: flex;
    gap: 12px;
}

.author-contact a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition);
}

.author-contact a:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.25);
}

/* 时间线 */
.about-timeline {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.timeline-row {
    display: flex;
    gap: 24px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.timeline-row:last-child {
    border-bottom: none;
}

.timeline-year {
    width: 60px;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--accent);
    flex-shrink: 0;
    padding-top: 4px;
}

.timeline-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.timeline-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 14px;
    border-radius: 10px;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-primary);
}

.timeline-item:hover {
    background: var(--bg-hover);
    transform: translateX(4px);
}

.timeline-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
    min-width: 48px;
}

.timeline-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-author {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .author-contact {
        justify-content: center;
    }
    
    .about-card,
    .about-timeline {
        padding: 24px;
    }
    
    .timeline-row {
        flex-direction: column;
        gap: 12px;
    }
    
    .timeline-year {
        width: auto;
        padding-bottom: 8px;
        border-bottom: 2px solid var(--accent-light);
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .stat-card {
        padding: 18px 12px;
    }
    
    .stat-card strong {
        font-size: 1.3rem;
    }
    
    .about-hero {
        padding: 40px 20px;
    }
    
    .about-title {
        font-size: 1.5rem;
    }
}