/* 基础重置与布局 */
.ai_auto_home * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#ai_auto_home {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Banner 区域 */
#ai_auto_banner {
    text-align: center;
    padding: 60px 20px;
    border-bottom: 1px solid #eee;
    margin-bottom: 40px;
}

.ai_auto_banner-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.ai_auto_banner-info {
    font-size: 1.1rem;
    color: #7f8c8d;
    margin-bottom: 2rem;
}

.ai_auto_main-search-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.ai_auto_main-search-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.ai_auto_main-search-btn {
    padding: 12px 24px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.ai_auto_main-search-btn:hover {
    background: #2980b9;
}

/* 版块标题 */
.ai_auto_section-title {
    font-size: 1.8rem;
    font-weight: 400;
    color: #2c3e50;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #ecf0f1;
}

/* 特色文章区域 */
#ai_auto_feature-article {
    margin-bottom: 4rem;
}

.ai_auto_article-card {
    background: white;
    border: 1px solid #ecf0f1;
    border-radius: 4px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: box-shadow 0.2s;
}

.ai_auto_article-card:hover {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.ai_auto_article-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #7f8c8d;
}

.ai_auto_article-content {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1.5rem;
    align-items: start;
}

.ai_auto_article-img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 4px;
}

.ai_auto_article-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.ai_auto_article-title a {
    color: #2c3e50;
    text-decoration: none;
}

.ai_auto_article-title a:hover {
    color: #3498db;
}

.ai_auto_article-desc {
    color: #5d6d7e;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.ai_auto_article-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 1rem;
}

/* 标签样式 */
.ai_auto_tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ai_auto_tag {
    padding: 0.25rem 0.75rem;
    background: #ecf0f1;
    color: #34495e;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.8rem;
    transition: background 0.2s;
}

.ai_auto_tag:hover {
    background: #d5dbdb;
}

/* 最近文章区域 */
#ai_auto_last-article {
    margin-bottom: 4rem;
}

.ai_auto_magazine-left .ai_auto_article-card {
    padding: 0;
    overflow: hidden;
}

.ai_auto_magazine-left .ai_auto_article-img {
    width: 100%;
    height: 200px;
    margin-bottom: 1rem;
}

.ai_auto_magazine-left .ai_auto_article-content {
    padding: 0 1.5rem 1.5rem;
    display: block;
}

.ai_auto_magazine-right .ai_auto_article-card {
    padding: 1rem;
    margin-bottom: 1rem;
}

.ai_auto_magazine-right .ai_auto_article-img {
    height: 80px;
}

.ai_auto_magazine-right .ai_auto_article-title {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

/* 推荐文章区域 */
.ai_auto_masonry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.ai_auto_masonry-grid .ai_auto_article-card {
    padding: 0;
    overflow: hidden;
}

.ai_auto_masonry-grid .ai_auto_article-img {
    width: 100%;
    height: 160px;
}

.ai_auto_masonry-grid .ai_auto_article-content {
    padding: 1.5rem;
    display: block;
}

/* 订阅区域 */
#ai_auto_subscribe {
    background: #f8f9fa;
    padding: 4rem 2rem;
    text-align: center;
    border-radius: 4px;
    margin-top: 4rem;
}

.ai_auto_subscribe-title {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.ai_auto_subscribe-info {
    color: #7f8c8d;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.ai_auto_subscribe-form {
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.ai_auto_subscribe-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.ai_auto_subscribe-btn {
    padding: 12px 24px;
    background: #27ae60;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.ai_auto_subscribe-btn:hover {
    background: #219a52;
}

/* 响应式设计 */
@media (max-width: 768px) {
    #ai_auto_home {
        padding: 10px;
    }

    .ai_auto_banner-title {
        font-size: 2rem;
    }

    .ai_auto_main-search-form,
    .ai_auto_subscribe-form {
        flex-direction: column;
    }

    .ai_auto_article-content {
        grid-template-columns: 1fr;
    }

    .ai_auto_article-img-container {
        text-align: center;
    }

    .ai_auto_article-img {
        max-width: 300px;
    }

    .ai_auto_masonry-grid {
        grid-template-columns: 1fr;
    }

    .ai_auto_article-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}