/* 文化起源页面样式 */
.origin-content {
    display: flex;
    max-width: 1200px;
    margin: 40px auto;
    min-height: calc(100vh - 200px);
}

/* 左侧时间轴导航 */
.timeline-nav {
    width: 200px;
    background: #8B0000;
    padding: 20px 0;
    border-radius: 10px;
    position: sticky;
    top: 20px;
    height: fit-content;
}

.timeline-nav ul {
    list-style: none;
}

.timeline-nav li {
    margin: 10px 0;
}

.timeline-nav a {
    display: block;
    color: #FFD700;
    text-decoration: none;
    padding: 10px 20px;
    transition: all 0.3s ease;
    position: relative;
}

.timeline-nav a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #FFD700;
    opacity: 0;
    transition: all 0.3s ease;
}

.timeline-nav a:hover,
.timeline-nav a.active {
    background: rgba(255, 215, 0, 0.2);
    padding-left: 30px;
}

.timeline-nav a:hover::before,
.timeline-nav a.active::before {
    opacity: 1;
}

/* 右侧内容区 */
.timeline-content {
    flex: 1;
    padding: 0 40px;
}

.time-section {
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.time-section h2 {
    color: #8B0000;
    font-size: 2em;
    margin-bottom: 30px;
    border-bottom: 2px solid #FFD700;
    padding-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.year {
    font-size: 0.6em;
    color: #666;
}

.content-box {
    display: flex;
    gap: 30px;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.content-box img {
    width: 300px;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
}

.text-content {
    flex: 1;
}

.text-content h3 {
    color: #CC0000;
    font-size: 1.5em;
    margin-bottom: 20px;
}

.text-content p {
    line-height: 1.8;
    text-indent: 2em;
    margin-bottom: 30px;
}

.culture-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.feature {
    background: rgba(139, 0, 0, 0.05);
    padding: 20px;
    border-radius: 8px;
}

.feature h4 {
    color: #8B0000;
    margin-bottom: 10px;
}

.feature p {
    margin: 0;
    font-size: 0.9em;
    text-indent: 0;
}