:root {
            --ai_auto_primary: #2a6ecc;
            --ai_auto_secondary: #4a8b3e;
            --ai_auto_accent1: #d45d79;
            --ai_auto_accent2: #8e6ec6;
            --ai_auto_light: #f8f9fa;
            --ai_auto_dark: #212529;
            --ai_auto_gray: #6c757d;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f5f7fa;
            color: #333;
        }
        
        /* 导航条样式 */
        #ai_auto_navbar {
            background: linear-gradient(135deg, #1a3a6d, #2a6ecc);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 0.8rem 0;
        }
        
        .ai_auto_navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: white !important;
            letter-spacing: 0.5px;
        }
        
        .ai_auto_navbar-brand span {
            color: var(--ai_auto_accent1);
        }
        
        .ai_auto_nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            padding: 0.5rem 1rem !important;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        
        .ai_auto_nav-link:hover, 
        .ai_auto_nav-link.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: white !important;
        }
        
        .ai_auto_search-form {
            position: relative;
        }
        
        .ai_auto_search-input {
            border-radius: 50px;
            padding: 0.5rem 1.5rem;
            border: none;
            background-color: rgba(255, 255, 255, 0.15);
            color: white;
            transition: all 0.3s ease;
        }
        
        .ai_auto_search-input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        
        .ai_auto_search-input:focus {
            background-color: rgba(255, 255, 255, 0.25);
            box-shadow: none;
            color: white;
        }
        
        .ai_auto_search-btn {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: rgba(255, 255, 255, 0.7);
        }
        
        /* Banner 样式 */
        #ai_auto_banner {
            background: linear-gradient(rgba(42, 110, 204, 0.9), rgba(26, 58, 109, 0.9)), 
                        url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?ixlib=rb-4.0.3') no-repeat center center;
            background-size: cover;
            padding: 5rem 0;
            color: white;
            text-align: center;
        }
        
        .ai_auto_banner-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .ai_auto_banner-info {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2.5rem;
            opacity: 0.9;
            line-height: 1.6;
        }
        
        .ai_auto_main-search-form {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
        }
        
        .ai_auto_main-search-input {
            padding: 1rem 2rem;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
        }
        
        .ai_auto_main-search-btn {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            background-color: var(--ai_auto_accent1);
            border: none;
            color: white;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .ai_auto_main-search-btn:hover {
            background-color: #c04a65;
        }
        
        /* 文章板块通用样式 */
        #ai_auto_home-artice {
            padding: 4rem 0;
        }
        
        .ai_auto_section-title {
            position: relative;
            font-weight: 700;
            margin-bottom: 2rem;
            padding-bottom: 0.75rem;
            color: var(--ai_auto_dark);
        }
        
        .ai_auto_section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 70px;
            height: 4px;
            background: var(--ai_auto_primary);
            border-radius: 2px;
        }
        
        .ai_auto_article-card {
            border-radius: 8px;
            overflow: hidden;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            background-color: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border: none;
        }
        
        .ai_auto_article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .ai_auto_article-img {
            height: 200px;
            width: 100%;
            object-fit: cover;
            display: block;
        }
        
        .ai_auto_article-content {
            padding: 1.5rem;
        }
        
        .ai_auto_article-title {
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
            color: var(--ai_auto_dark);
        }
        
        .ai_auto_article-title a {
            color: inherit;
            text-decoration: none;
        }
        
        .ai_auto_article-title a:hover {
            color: var(--ai_auto_primary);
        }
        
        .ai_auto_article-desc {
            color: var(--ai_auto_gray);
            margin-bottom: 1rem;
            line-height: 1.6;
        }
        
        .ai_auto_article-meta {
            display: flex;
            align-items: center;
            margin-bottom: 0.75rem;
            font-size: 0.9rem;
            color: var(--ai_auto_gray);
        }
        
        .ai_auto_article-author {
            margin-right: 1.5rem;
        }
        
        .ai_auto_article-date {
            display: flex;
            align-items: center;
        }
        
        .ai_auto_article-date i {
            margin-right: 5px;
        }
        
        .ai_auto_tag {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            background-color: rgba(42, 110, 204, 0.1);
            color: var(--ai_auto_primary);
            border-radius: 30px;
            font-size: 0.8rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .ai_auto_tag:hover {
            background-color: var(--ai_auto_primary);
            color: white;
        }
        
        /* 特色文章板块 - 单列时间线卡片 */
        #ai_auto_feature-article .ai_auto_article-card {
            border-left: 3px solid var(--ai_auto_primary);
            margin-bottom: 2rem;
        }
        
        #ai_auto_feature-article .ai_auto_article-header {
            background-color: rgba(42, 110, 204, 0.05);
            padding: 0.75rem 1.5rem;
            color: var(--ai_auto_primary);
            font-weight: 600;
            display: flex;
            align-items: center;
        }
        
        #ai_auto_feature-article .ai_auto_article-date {
            margin-left: auto;
        }
        
        #ai_auto_feature-article .ai_auto_article-content {
            display: flex;
            padding: 0;
        }
        
        #ai_auto_feature-article .ai_auto_article-img-container {
            flex: 0 0 35%;
        }
        
        #ai_auto_feature-article .ai_auto_article-img {
            height: 100%;
            border-radius: 0;
        }
        
        #ai_auto_feature-article .ai_auto_article-text {
            flex: 0 0 65%;
            padding: 1.5rem;
        }
        
        /* 最近文章板块 - 杂志式排版 */
        #ai_auto_last-article {
            margin: 4rem 0;
        }
        
        .ai_auto_magazine-left {
            height: 100%;
        }
        
        .ai_auto_magazine-left .ai_auto_article-card {
            height: 100%;
        }
        
        .ai_auto_magazine-left .ai_auto_article-img {
            height: 300px;
        }
        
        .ai_auto_magazine-right .ai_auto_article-card {
            margin-bottom: 1.5rem;
        }
        
        .ai_auto_magazine-right .ai_auto_article-content {
            padding: 1.25rem;
        }
        
        .ai_auto_magazine-right .ai_auto_article-img {
            height: 150px;
        }
        
        .ai_auto_magazine-right .ai_auto_article-title {
            font-size: 1.1rem;
        }
        
        /* 推荐文章板块 - 瀑布流布局 */
        #ai_auto_recommend-article .ai_auto_masonry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
        }
        
        #ai_auto_recommend-article .ai_auto_article-card {
            margin-bottom: 0;
        }
        
        #ai_auto_recommend-article .ai_auto_article-img {
            height: 180px;
        }
        
        /* 订阅板块样式 */
        #ai_auto_subscribe {
            background: linear-gradient(135deg, var(--ai_auto_secondary), #3a7530);
            padding: 4rem 0;
            color: white;
            text-align: center;
        }
        
        .ai_auto_subscribe-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        
        .ai_auto_subscribe-info {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.9;
            line-height: 1.6;
        }
        
        .ai_auto_subscribe-form {
            max-width: 500px;
            margin: 0 auto;
            position: relative;
        }
        
        .ai_auto_subscribe-input {
            padding: 1rem 1.5rem;
            border-radius: 50px;
            border: none;
            font-size: 1rem;
            width: 100%;
        }
        
        .ai_auto_subscribe-btn {
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            background-color: var(--ai_auto_accent1);
            border: none;
            color: white;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .ai_auto_subscribe-btn:hover {
            background-color: #c04a65;
        }
        
        /* Footer 样式 */
        #ai_auto_footer {
            background-color: var(--ai_auto_dark);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 4rem;
        }
        
        .ai_auto_footer-title {
            color: white;
            font-weight: 600;
            font-size: 1.25rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.75rem;
        }
        
        .ai_auto_footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--ai_auto_primary);
        }
        
        .ai_auto_footer-desc {
            margin-top: 1.5rem;
            line-height: 1.6;
        }
        
        .ai_auto_footer-links {
            list-style: none;
            padding: 0;
        }
        
        .ai_auto_footer-links li {
            margin-bottom: 0.8rem;
        }
        
        .ai_auto_footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .ai_auto_footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .ai_auto_contact-info {
            list-style: none;
            padding: 0;
        }
        
        .ai_auto_contact-info li {
            margin-bottom: 1rem;
            display: flex;
            align-items: flex-start;
        }
        
        .ai_auto_contact-info i {
            margin-right: 12px;
            color: var(--ai_auto_primary);
            margin-top: 4px;
        }
        
        .ai_auto_copyright {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
        }
        
        /* 响应式调整 */
        @media (max-width: 992px) {
            #ai_auto_feature-article .ai_auto_article-content {
                flex-direction: column;
            }
            
            #ai_auto_feature-article .ai_auto_article-img {
                height: 200px;
            }
            
            .ai_auto_banner-title {
                font-size: 2.5rem;
            }
        }
        
        @media (max-width: 768px) {
            .ai_auto_banner-title {
                font-size: 2rem;
            }
            
            .ai_auto_banner-info {
                font-size: 1rem;
            }
            
            .ai_auto_navbar-nav {
                margin-top: 1rem;
            }
            
            #ai_auto_feature-article .ai_auto_article-header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            #ai_auto_feature-article .ai_auto_article-date {
                margin-left: 0;
                margin-top: 0.5rem;
            }
        }