/* 关于页面头部 */
.about-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.about-intro {
    max-width: 600px;
    margin: 0 auto;
}

.about-avatar {
    margin-bottom: 2rem;
}

.about-avatar img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 5px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.about-intro h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.about-tagline {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.about-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.about-social a {
    display: inline-flex;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s;
}

.about-social a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

/* 关于内容区域 */
.about-content {
    padding: 4rem 0;
    background: var(--bg-light);
}

.about-section {
    background: white;
    border-radius: 10px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.about-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    position: relative;
    padding-bottom: 1rem;
}

.about-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.about-section p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* 技能网格 */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
}

.skill-category h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-category i {
    color: var(--primary-color);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: white;
    color: var(--text-color);
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 时间线 */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -44px;
    top: 0;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 0 4px white, 0 0 0 6px var(--border-color);
}

.timeline-date {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.timeline-company {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1rem;
}

/* 兴趣爱好 */
.interests {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.interest-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 10px;
    transition: transform 0.3s;
}

.interest-item:hover {
    transform: translateY(-5px);
}

.interest-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.interest-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.interest-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-intro h1 {
        font-size: 2rem;
    }

    .about-tagline {
        font-size: 1rem;
    }

    .about-avatar img {
        width: 150px;
        height: 150px;
    }

    .about-section {
        padding: 2rem;
    }

    .timeline {
        padding-left: 20px;
    }

    .timeline-item::before {
        left: -24px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
}