/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 新闻容器 */
.news-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 40px 20px;
}

/*  section标题 */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 32px;
    color: #333;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-divider {
    width: 80px;
    height: 4px;
    background-color: #2c6ecb;
    margin: 0 auto;
    border-radius: 2px;
}

/* 新闻列表 */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 新闻卡片 */
.news-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.news-card.wow.fadeInUp {
    opacity: 1;
    transform: translateY(0);
}

.news-card-inner {
    display: flex;
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover .news-card-inner {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* 新闻图片区域 */
.news-visual {
    flex: 0 0 300px;
    position: relative;
}

.news-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-visual img {
    transform: scale(1.03);
}

/* 分子式状态分布图 */
.molecule-diagram {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background-color: rgba(255, 255, 255, 0.85);
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 2;
}

.molecule-svg {
    transition: transform 0.5s ease;
}

.news-card:hover .molecule-svg {
    transform: rotate(15deg) scale(1.1);
}

/* 原子动画 */
.atom-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.15); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

/* 新闻详情 */
.news-details {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
}

/* 新闻元数据 */
.news-meta {
    display: flex;
    margin-bottom: 15px;
    font-size: 14px;
}

.news-date {
    color: #2c6ecb;
    font-weight: 500;
    margin-right: 20px;
}

.news-category {
    color: #666;
    background-color: #f5f7fa;
    padding: 2px 10px;
    border-radius: 12px;
}

/* 新闻标题 */
.news-title {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.news-card:hover .news-title {
    color: #2c6ecb;
}

/* 新闻摘要 */
.news-summary {
    color: #666;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 25px;
    flex: 1;
}

/* 新闻操作 */
.news-actions {
    margin-top: auto;
}

.read-more {
    display: inline-flex;
    align-items: center;
    color: #2c6ecb;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.read-more i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.read-more:hover {
    color: #1a56b3;
}

.read-more:hover i {
    transform: translateX(5px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .news-card-inner {
        flex-direction: column;
    }

    .news-visual {
        flex: 0 0 220px;
    }

    .news-details {
        padding: 25px;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 28px;
    }

    .news-title {
        font-size: 20px;
    }

    .news-visual {
        flex: 0 0 180px;
    }
}

@media (max-width: 480px) {
    .news-container {
        padding: 20px 15px;
    }

    .section-title {
        font-size: 24px;
    }

    .news-details {
        padding: 20px;
    }

    .news-summary {
        font-size: 14px;
    }
}