.container { width: 1300px; margin: 0 auto; padding: 0 40px; }

/* 页面标题区域 */
.page-header {
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.9) 0%, rgba(13, 35, 64, 0.9) 100%), 
                url('https://images.unsplash.com/photo-1526779259212-939e64788e3c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    color: white;
    padding: 80px 0 60px;
    text-align: center;
}
.page-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}
.page-subtitle {
    font-size: 22px;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 40px;
}

/* 主要内容区布局 */
.main-content {
    display: flex;
    gap: 40px;
    padding: 60px 0 80px;
}

/* 左侧新闻内容区 */
.news-content {
    flex: 1;
}

/* 内容导航 */
.content-nav {
    display: flex;
    margin-bottom: 40px;
    border-bottom: 2px solid var(--border);
}
.plan-nav-item {
    padding: 15px 30px;
    font-weight: 600;
    font-size: 17px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
    white-space: nowrap;
}
.plan-nav-item:hover, .plan-nav-item.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* 新闻文章列表 */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.article-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}
.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}
.article-image {
    height: 280px;
    background-size: cover;
    background-position: center;
}
.article-content {
    padding: 35px;
}
.article-meta {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: var(--gray);
    font-size: 15px;
}
.article-category {
    background: rgba(42, 92, 170, 0.1);
    color: var(--accent);
    padding: 6px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    margin-right: 20px;
}
.article-date {
    display: flex;
    align-items: center;
    margin-right: 20px;
}
.article-date i, .article-views i {
    margin-right: 8px;
}
.article-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary);
    line-height: 1.3;
}
.article-excerpt {
    color: #555;
    line-height: 1.7;
    margin-bottom: 25px;
    font-size: 17px;
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}
.article-tag {
    padding: 6px 14px;
    background: #f8f9fa;
    color: var(--gray);
    border-radius: 20px;
    font-size: 14px;
}
.read-more {
    display: inline-flex;
    align-items: center;
    color: var(--accent);
    font-weight: 600;
    font-size: 16px;
}
.read-more i {
    margin-left: 8px;
    transition: transform 0.3s;
}
.read-more:hover i {
    transform: translateX(5px);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
}
.page-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: white;
    color: var(--dark);
    font-weight: 600;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}
.page-link:hover, .page-link.active {
    background: var(--accent);
    color: white;
}
.page-ellipsis {
    color: var(--gray);
    padding: 0 10px;
}


/* 侧边栏 */
.sidebar {
    width: 380px;
    flex-shrink: 0;
}
.sidebar-section {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    padding: 30px;
    margin-bottom: 30px;
}
.sidebar-title {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
}
.sidebar-title i {
    margin-right: 12px;
    color: var(--secondary);
}

/* 成功案例 */
.case-card {
    display: flex;
    flex-direction: column;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #f0f0f0;
}
.case-card:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.case-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}
.case-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #1a365d);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: 700;
    margin-right: 15px;
}
.case-info h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--primary);
}
.case-location {
    color: var(--gray);
    font-size: 14px;
    display: flex;
    align-items: center;
}
.case-location i {
    margin-right: 5px;
}
.case-desc {
    color: #555;
    line-height: 1.6;
    margin-bottom: 15px;
    font-size: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-stats {
    display: flex;
    justify-content: space-between;
}
.case-stat {
    text-align: center;
}
.case-stat .number {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    display: block;
}
.case-stat .label {
    font-size: 13px;
    color: var(--gray);
}

/* 热门文章 */
.popular-article {
    display: flex;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #f0f0f0;
}
.popular-article:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.popular-rank {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--primary);
    margin-right: 15px;
    flex-shrink: 0;
}
.popular-rank.top {
    background: rgba(212, 175, 55, 0.15);
    color: var(--secondary);
}
.popular-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary);
    line-height: 1.4;
}
.popular-meta {
    display: flex;
    color: var(--gray);
    font-size: 13px;
}
.popular-meta span {
    margin-right: 15px;
}

/* 分类标签 */
.category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.category-tag {
    padding: 10px 20px;
    background: #f8f9fa;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
}
.category-tag:hover, .category-tag.active {
    background: var(--accent);
    color: white;
}

/* 新闻简报订阅 */
.newsletter-form {
    margin-top: 20px;
}
.newsletter-input {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 15px;
    transition: border 0.3s;
}
.newsletter-input:focus {
    outline: none;
    border-color: var(--accent);
}
.newsletter-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--accent), #1a365d);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
}
.newsletter-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(42, 92, 170, 0.2);
}

/* 特色成功案例 */
.featured-case {
    background: linear-gradient(135deg, #1a365d, #0d2340);
    border-radius: 12px;
    overflow: hidden;
    color: white;
    margin-top: 40px;
}
.featured-case-content {
    padding: 40px;
}
.featured-case .sidebar-title {
    color: white;
    border-bottom-color: rgba(255, 255, 255, 0.2);
}
.featured-case .case-card {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}
.featured-case .case-desc {
    color: rgba(255, 255, 255, 0.9);
}
.featured-case .case-stat .number {
    color: white;
}
.featured-case .case-stat .label {
    color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 1100px) {
    .main-content {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
    }
}
@media (max-width: 768px) {
    .container {
        padding-left: 25px;
        padding-right: 25px;
    }
    .page-title {
        font-size: 40px;
    }
    .page-subtitle {
        font-size: 18px;
    }
    .content-nav {
        overflow-x: auto;
        padding-bottom: 10px;
    }
    .article-image {
        height: 200px;
    }
    .article-title {
        font-size: 24px;
    }
}