/* 新闻首页样式 - 参考Argus Media设计 */
.news-hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.news-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.news-hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.news-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.news-hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.news-hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 产品标签推荐区域 */
.product-tags-section {
    background: #f8fafc;
    padding: 4rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.product-tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.product-tag-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.product-tag-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
}

.product-tag-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.product-tag-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.product-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.5rem;
}

.product-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    cursor: help;
}

.product-name:hover::after {
    content: attr(data-full-name);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    background: #1e293b;
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 9999;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    max-width: 300px;
    word-wrap: break-word;
    white-space: normal;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: all 0.2s ease;
}

.product-name:hover::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 4px);
    left: 1rem;
    border: 4px solid transparent;
    border-top-color: #1e293b;
    z-index: 9999;
}

.product-cas {
    font-size: 0.875rem;
    color: #64748b;
    margin-top: 0.25rem;
}

.product-description {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.product-link {
    display: inline-flex;
    align-items: center;
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.product-link:hover {
    color: #1d4ed8;
}

.product-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.product-link:hover::after {
    transform: translateX(4px);
}

/* 最新新闻区域 */
.latest-news-section {
    padding: 4rem 0;
    background: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.news-card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.news-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    line-height: 1.4;
    margin: 0 0 0.75rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: #64748b;
}

.news-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.news-card-body {
    padding: 1.5rem;
}

.news-excerpt {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.news-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #1d4ed8;
}

.news-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

.news-link:hover::after {
    transform: translateX(4px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .news-hero h1 {
        font-size: 2.5rem;
    }
    
    .news-hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .product-tags-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
.loading-skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}