/* 博客页面专用样式 */

/* 博客Hero区块 */
.blog-hero {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(240, 147, 251, 0.1) 50%, 
        rgba(79, 209, 199, 0.1) 100%);
    padding: 8rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.blog-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="%23667eea" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23f093fb" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%234fd1c7" opacity="0.15"/><circle cx="10" cy="50" r="0.5" fill="%23667eea" opacity="0.1"/><circle cx="90" cy="30" r="0.5" fill="%23f093fb" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    animation: float 20s ease-in-out infinite;
}

.blog-hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.blog-hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.blog-hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.blog-hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.hero-stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    min-width: 150px;
}

.hero-stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.hero-stat-item .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.hero-stat-item .stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* 分类筛选区块 */
.blog-filters {
    background: linear-gradient(135deg, #f8fbff 0%, #f0f4ff 100%);
    padding: 3rem 0;
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
}

.filters-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-tab {
    background: white;
    border: 2px solid rgba(229, 231, 235, 0.6);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.filter-tab:hover,
.filter-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.search-box {
    display: flex;
    align-items: center;
    background: white;
    border-radius: 25px;
    padding: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 2px solid rgba(229, 231, 235, 0.6);
    transition: all 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
}

.search-input {
    border: none;
    outline: none;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    background: transparent;
    min-width: 200px;
}

.search-btn {
    background: var(--primary-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background: var(--accent-color);
    transform: scale(1.05);
}

/* 博客文章区块 */
.blog-articles {
    background: white;
    padding: 6rem 0;
}

/* 特色文章 */
.featured-articles {
    margin: 3rem 0 4rem 0;
}

.featured-article {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 3rem;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.03) 0%, 
        rgba(118, 75, 162, 0.03) 50%, 
        rgba(240, 147, 251, 0.03) 100%);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 
        0 15px 35px rgba(102, 126, 234, 0.08),
        0 6px 16px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.featured-article:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 
        0 25px 60px rgba(102, 126, 234, 0.12),
        0 10px 25px rgba(0, 0, 0, 0.08);
}

.featured-image {
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    overflow: hidden;
}

.featured-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M30 5L35 20L50 15L40 30L55 35L40 40L50 55L35 50L30 65L25 50L10 55L20 40L5 35L20 30L10 15L25 20L30 5Z'/%3E%3C/g%3E%3C/svg%3E") repeat;
    animation: float 8s ease-in-out infinite;
}

.image-placeholder {
    z-index: 2;
    position: relative;
}

.featured-category {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-color);
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    z-index: 3;
}

.featured-date {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    z-index: 3;
}

.featured-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.featured-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.featured-excerpt {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.featured-meta {
    margin-bottom: 2rem;
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    align-self: flex-start;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.read-more-btn:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.4);
}

/* 最新文章区块 */
.latest-articles {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

/* 文章网格 */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.article-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 10px 25px rgba(102, 126, 234, 0.08),
        0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(229, 231, 235, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 25px 50px rgba(102, 126, 234, 0.15),
        0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
}

.article-image {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 180px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.article-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M20 3L23 13L33 10L27 20L37 23L27 26L33 36L23 33L20 43L17 33L7 36L13 26L3 23L13 20L7 10L17 13L20 3Z'/%3E%3C/g%3E%3C/svg%3E") repeat;
    animation: float 6s ease-in-out infinite;
}

.article-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
}

.article-date {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

.article-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1.5rem;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.tag {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(102, 126, 234, 0.2);
    transition: all 0.3s ease;
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.article-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    align-items: center;
}

.article-stats span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-weight: 500;
}

.article-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    margin-top: auto;
}

.article-link:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

/* 加载更多区块 */
.load-more-section {
    text-align: center;
    margin-top: 5rem;
    padding-top: 3rem;
    border-top: 2px solid rgba(229, 231, 235, 0.6);
}

.load-more-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1.2rem 3rem;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

.btn-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.load-more-btn:hover .btn-icon {
    transform: translateY(3px);
}

.load-more-hint {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-style: italic;
}

/* 解决方案与应用场景区块 */
.solutions-scenarios {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fbff 0%, #f0f4ff 100%);
}

/* 合集卡片网格 */
.collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.collection-card {
    background: white;
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 
        0 15px 35px rgba(102, 126, 234, 0.08),
        0 6px 16px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.collection-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.02) 0%, 
        rgba(118, 75, 162, 0.02) 50%, 
        rgba(240, 147, 251, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.collection-card:hover::before {
    opacity: 1;
}

.collection-card:hover {
    transform: translateY(-10px);
    box-shadow: 
        0 25px 60px rgba(102, 126, 234, 0.15),
        0 10px 25px rgba(0, 0, 0, 0.08);
    border-color: rgba(102, 126, 234, 0.2);
}

.collection-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.collection-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
}

.collection-badge {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.collection-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
    position: relative;
    z-index: 2;
}

.collection-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
    font-size: 1rem;
    position: relative;
    z-index: 2;
}

.collection-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.stat-item {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.collection-link {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.collection-link:hover {
    color: var(--accent-color);
}

.link-arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.collection-link:hover .link-arrow {
    transform: translateX(5px);
}

/* 知识专题合集区块 */
.knowledge-collections {
    padding: 6rem 0;
    background: white;
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.knowledge-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.9) 0%, 
        rgba(248, 250, 252, 0.9) 100%);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 
        0 10px 25px rgba(102, 126, 234, 0.08),
        0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(229, 231, 235, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.knowledge-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 40px rgba(102, 126, 234, 0.12),
        0 8px 20px rgba(0, 0, 0, 0.08);
    border-color: rgba(102, 126, 234, 0.3);
}

.knowledge-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.knowledge-icon {
    font-size: 2rem;
}

.knowledge-badge {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.knowledge-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.knowledge-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.knowledge-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.knowledge-link:hover {
    color: var(--accent-color);
}

.knowledge-link:hover .link-arrow {
    transform: translateX(3px);
}

.solutions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.solution-category {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: var(--transition);
}

.solution-category:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.category-header {
    text-align: center;
    margin-bottom: 2rem;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.category-subtitle {
    color: var(--text-secondary);
}

.category-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.category-item {
    background: white;
    border-radius: var(--border-radius-sm);
    padding: 1.5rem;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(229, 231, 235, 0.5);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.category-item:hover {
    background: rgba(102, 126, 234, 0.05);
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.item-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.item-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.item-arrow {
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.category-item:hover .item-arrow {
    transform: translateX(5px);
}

.view-all-btn {
    display: block;
    text-align: center;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.view-all-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* 热门文章区块 */
.popular-articles {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.popular-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.popular-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.popular-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.popular-rank {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.popular-content {
    flex: 1;
}

.popular-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.popular-excerpt {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.popular-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.popular-category {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.popular-views {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* 专题合集区块 */
.topics-collection {
    padding: 4rem 0;
    background: white;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.topic-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: var(--transition);
    border: 1px solid rgba(229, 231, 235, 0.5);
}

.topic-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.topic-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.topic-icon {
    font-size: 2.5rem;
}

.topic-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.topic-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.topic-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.topic-articles {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.article-preview {
    font-size: 0.875rem;
    color: var(--text-light);
    padding-left: 0.5rem;
}

.topic-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.topic-link:hover {
    color: var(--primary-dark);
}

/* 行业资源区块 */
.industry-resources {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

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

.resource-category {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.resource-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
}

.resource-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.resource-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.resource-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.resource-item {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    padding: 1.5rem;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid rgba(229, 231, 235, 0.5);
}

.resource-item:hover {
    background: rgba(102, 126, 234, 0.05);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.resource-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.resource-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.resource-type {
    font-size: 0.75rem;
    color: var(--text-light);
    background: rgba(102, 126, 234, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    display: inline-block;
}

.download-icon,
.external-icon {
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.resource-item:hover .download-icon,
.resource-item:hover .external-icon {
    transform: scale(1.2);
}

/* 订阅与联系区块 */
.subscribe-contact {
    padding: 4rem 0;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(240, 147, 251, 0.1) 100%);
}

.subscribe-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.subscribe-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.subscribe-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.subscribe-benefits {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.benefit-icon {
    font-size: 1.25rem;
}

.subscribe-right {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.subscribe-form,
.contact-info {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.subscribe-form h3,
.contact-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.form-group input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(229, 231, 235, 0.8);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.subscribe-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.subscribe-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.form-note {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    background: var(--bg-secondary);
}

.contact-item:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
}

.contact-icon {
    font-size: 1.25rem;
}

/* 动画定义 */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .featured-article {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .featured-image {
        min-height: 250px;
    }
    
    .featured-content {
        padding: 2rem;
    }

    .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 2rem;
    }

    .collections-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .knowledge-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
    }

    .filters-content {
        flex-direction: column;
        align-items: stretch;
        gap: 1.5rem;
    }
    
    .search-input {
        min-width: 150px;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .subscribe-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .blog-hero {
        padding: 6rem 0 3rem;
    }
    
    .blog-hero-title {
        font-size: 2.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .blog-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .blog-hero-stats {
        gap: 1.5rem;
    }
    
    .hero-stat-item {
        min-width: 120px;
        padding: 1rem;
    }
    
    .hero-stat-item .stat-number {
        font-size: 1.5rem;
    }
    
    .blog-filters {
        padding: 2rem 0;
    }
    
    .filter-tabs {
        justify-content: center;
    }
    
    /* 博客更新中提示移动端样式 */
    .coming-soon-card {
        padding: 2rem;
        margin: 2rem 0 3rem 0;
    }
    
    .coming-soon-title {
        font-size: 1.6rem;
    }
    
    .coming-soon-description {
        font-size: 1rem;
    }
    
    .coming-soon-features {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 1rem;
    }
    
    .feature-item {
        padding: 0.8rem;
    }
    
    .update-timeline {
        padding: 1rem;
    }
    
    .timeline-text {
        font-size: 0.9rem;
        flex-direction: column;
        gap: 0.3rem;
    }
    
    /* 占位卡片移动端样式 */
    .placeholder-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .placeholder-content {
        padding: 1.5rem;
    }
    
    .featured-article {
        margin: 2rem 0 3rem 0;
    }
    
    .featured-image {
        min-height: 200px;
    }
    
    .featured-title {
        font-size: 1.6rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .collections-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .knowledge-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .collection-card,
    .knowledge-card {
        padding: 2rem;
    }
    
    .load-more-btn {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    .popular-grid {
        grid-template-columns: 1fr;
    }
    
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .resource-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .subscribe-btn {
        align-self: stretch;
    }
}

@media (max-width: 480px) {
    .blog-hero {
        padding: 5rem 0 2rem;
    }
    
    .blog-hero-title {
        font-size: 2rem;
    }
    
    .blog-hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .hero-stat-item {
        width: 100%;
        max-width: 200px;
    }
    
    .blog-filters {
        padding: 1.5rem 0;
    }
    
    .filter-tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .search-input {
        min-width: 120px;
        font-size: 0.9rem;
    }
    
    /* 博客更新中提示小屏幕样式 */
    .coming-soon-card {
        padding: 1.5rem;
        margin: 1.5rem 0 2.5rem 0;
    }
    
    .coming-soon-title {
        font-size: 1.4rem;
    }
    
    .coming-soon-description {
        font-size: 0.95rem;
    }
    
    .coming-soon-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }
    
    .feature-item {
        padding: 0.6rem;
        font-size: 0.85rem;
    }
    
    .feature-icon {
        font-size: 1.2rem;
    }
    
    .update-timeline {
        padding: 0.8rem;
    }
    
    .timeline-text {
        font-size: 0.85rem;
        flex-direction: column;
        gap: 0.2rem;
    }
    
    /* 占位卡片小屏幕样式 */
    .placeholder-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .placeholder-content {
        padding: 1rem;
    }
    
    .placeholder-category {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    .featured-article {
        margin: 1.5rem 0 2.5rem 0;
    }
    
    .featured-content {
        padding: 1.5rem;
    }
    
    .featured-title {
        font-size: 1.4rem;
    }
    
    .article-content {
        padding: 1.5rem;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .article-title {
        font-size: 1.2rem;
    }
    
    .collections-grid {
        gap: 1.5rem;
    }
    
    .collection-card {
        padding: 1.5rem;
    }
    
    .collection-title {
        font-size: 1.3rem;
    }
    
    .knowledge-grid {
        gap: 1.5rem;
    }
    
    .knowledge-card {
        padding: 1.5rem;
    }
    
    .knowledge-title {
        font-size: 1.2rem;
    }
    
    .load-more-section {
        margin-top: 3rem;
        padding-top: 2rem;
    }
    
    .load-more-btn {
        padding: 0.9rem 1.8rem;
        font-size: 0.95rem;
    }
    
    .topic-card,
    .resource-category,
    .subscribe-form,
    .contact-info {
        padding: 1.5rem;
    }
    
    .solution-category {
        padding: 1.5rem;
    }
}

/* 动画优化 */
@media (prefers-reduced-motion: reduce) {
    .blog-hero::before {
        animation: none;
    }
    
    .hero-stat-item,
    .article-card,
    .topic-card,
    .popular-card {
        transition: none;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .article-card,
    .topic-card,
    .popular-card,
    .resource-category,
    .subscribe-form,
    .contact-info {
        border: 2px solid var(--text-primary);
    }
    
    .tag,
    .topic-badge,
    .resource-type {
        border: 1px solid var(--primary-color);
    }
}

/* 焦点样式 */
.article-card:focus,
.topic-card:focus,
.category-item:focus,
.resource-item:focus,
.contact-item:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* 博客更新中提示 */
.blog-coming-soon {
    margin: 3rem 0 4rem 0;
    display: flex;
    justify-content: center;
}

.coming-soon-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 250, 252, 0.95) 100%);
    border-radius: 24px;
    padding: 3rem;
    text-align: center;
    max-width: 800px;
    box-shadow: 
        0 15px 35px rgba(102, 126, 234, 0.08),
        0 6px 16px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}

.coming-soon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.02) 0%, 
        rgba(118, 75, 162, 0.02) 50%, 
        rgba(240, 147, 251, 0.02) 100%);
    z-index: 1;
}

.coming-soon-card > * {
    position: relative;
    z-index: 2;
}

.coming-soon-icon {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
}

.coming-soon-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.coming-soon-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.coming-soon-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.2);
    transform: translateY(-3px);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.feature-item span:last-child {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.update-timeline {
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 16px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.timeline-text {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.timeline-icon {
    font-size: 1.2rem;
}

/* 占位文章网格 */
.articles-placeholder {
    margin-top: 3rem;
}

.placeholder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.placeholder-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 10px 25px rgba(102, 126, 234, 0.05),
        0 4px 12px rgba(0, 0, 0, 0.03);
    border: 2px dashed rgba(102, 126, 234, 0.2);
    position: relative;
    opacity: 0.7;
}

.placeholder-image {
    height: 180px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    position: relative;
    overflow: hidden;
}

.placeholder-shimmer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(102, 126, 234, 0.1) 50%, 
        transparent 100%);
    animation: shimmer-loading 2s ease-in-out infinite;
}

@keyframes shimmer-loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.placeholder-content {
    padding: 2rem;
}

.placeholder-category {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
}

.placeholder-title {
    height: 24px;
    background: linear-gradient(90deg, #f7fafc 0%, #edf2f7 50%, #f7fafc 100%);
    border-radius: 4px;
    margin-bottom: 1rem;
    animation: shimmer-loading 2s ease-in-out infinite;
}

.placeholder-text {
    height: 16px;
    background: linear-gradient(90deg, #f7fafc 0%, #edf2f7 50%, #f7fafc 100%);
    border-radius: 4px;
    margin-bottom: 0.8rem;
    animation: shimmer-loading 2s ease-in-out infinite;
}

.placeholder-text.short {
    width: 60%;
}

/* 特色文章 */