:root {
            --primary-color: #1a3a6d;
            --secondary-color: #2a9d8f;
            --accent-color: #e76f51;
            --highlight-color: #f4a261;
            --light-bg: #f8f9fa;
            --card-radius: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            --inner-shadow: inset 0 -2px 12px rgba(0, 0, 0, 0.05);
        }

        body {
            background: linear-gradient(135deg, #e0f7fa 0%, #f5f5f5 100%);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333;
            overflow-x: hidden;
        }

        /* Claymorphism 黏土态风格 */
        .ai_auto_clay {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(10px);
            border-radius: var(--card-radius);
            border: 1px solid rgba(255, 255, 255, 0.6);
            box-shadow: var(--shadow), var(--inner-shadow);
            transition: all 0.3s ease;
        }

        .ai_auto_clay:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
        }

        /* 导航条样式 */
        #ai_auto_navbar {
            background: rgba(26, 58, 109, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            padding: 0.8rem 0;
        }

        .ai_auto_nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            border-radius: 50px;
            transition: all 0.3s ease;
        }

        .ai_auto_nav-link:hover {
            background: rgba(255, 255, 255, 0.15);
            color: white !important;
        }

        /* Banner 区域 */
        #ai_auto_banner {
            background: linear-gradient(120deg, rgba(26, 58, 109, 0.85), rgba(42, 157, 143, 0.8)), url('https://images.unsplash.com/photo-1620641788421-7a1c342ea42e?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1974&q=80');
            background-size: cover;
            background-position: center;
            padding: 5rem 0;
            margin-bottom: 4rem;
        }

        .ai_auto_banner-content {
            max-width: 800px;
            margin: 0 auto;
            color: white;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        /* 搜索框样式 */
        .ai_auto_search-box {
            position: relative;
            max-width: 700px;
            margin: 2rem auto;
        }

        .ai_auto_search-box input {
            border-radius: 50px;
            padding: 1.25rem 1.5rem;
            font-size: 1.1rem;
            border: none;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .ai_auto_search-box .btn {
            position: absolute;
            right: 6px;
            top: 6px;
            border-radius: 50px;
            padding: 0.75rem 1.5rem;
            background: var(--accent-color);
            border: none;
            font-weight: 600;
        }

        /* 文章卡片通用样式 */
        .ai_auto_article-card {
            /*height: 100%;*/
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .ai_auto_article-card .card-img-top {
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .ai_auto_article-card:hover .card-img-top {
            transform: scale(1.05);
        }

        .ai_auto_article-card .ai_auto_label {
            background: rgba(42, 157, 143, 0.15);
            color: var(--secondary-color);
            border-radius: 50px;
            padding: 0.25rem 0.8rem;
            font-size: 0.85rem;
            margin-right: 0.5rem;
            transition: all 0.2s ease;
        }

        .ai_auto_article-card .ai_auto_label:hover {
            background: var(--secondary-color);
            color: white;
        }

        /* 特色文章 - 杂志式布局 */
        #ai_auto_feature-article .ai_auto_main-article {
            border-radius: var(--card-radius);
            overflow: hidden;
            margin-bottom: 2rem;
            /*height: 500px;*/
            position: relative;
        }

        #ai_auto_feature-article .ai_auto_main-article img {
            height: 100%;
            width: 100%;
            object-fit: cover;
        }

        #ai_auto_feature-article .ai_auto_main-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,0.8));
            color: white;
            padding: 2rem;
        }

        #ai_auto_feature-article .ai_auto_side-articles .ai_auto_article-card {
            margin-bottom: 1.5rem;
        }

        /* 最近文章 - 时间线布局 */
        #ai_auto_last-article .ai_auto_timeline-card {
            position: relative;
            padding-left: 2.5rem;
            margin-bottom: 2.5rem;
            border-left: 3px solid var(--secondary-color);
        }

        #ai_auto_last-article .ai_auto_date-badge {
            position: absolute;
            left: -20px;
            top: 0;
            background: var(--secondary-color);
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        /* 推荐文章 - 图文融合卡片 */
        #ai_auto_recommend-article .ai_auto_fusion-card {
            height: 280px;
            position: relative;
            border-radius: var(--card-radius);
            overflow: hidden;
            margin-bottom: 1.5rem;
        }

        #ai_auto_recommend-article .ai_auto_fusion-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        #ai_auto_recommend-article .ai_auto_fusion-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(26, 58, 109, 0.85);
            color: white;
            padding: 1.5rem;
            transform: translateY(100%);
            transition: transform 0.4s ease;
        }

        #ai_auto_recommend-article .ai_auto_fusion-card:hover .ai_auto_fusion-content {
            transform: translateY(0);
        }

        #ai_auto_recommend-article .ai_auto_fusion-card:hover img {
            transform: scale(1.1);
        }

        /* 订阅区域 */
        #ai_auto_subscribe {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            padding: 5rem 0;
            margin: 5rem 0;
            color: white;
            border-radius: var(--card-radius);
        }

        .ai_auto_subscribe-form {
            max-width: 600px;
            margin: 0 auto;
        }

        .ai_auto_subscribe-form input {
            padding: 1.25rem;
            border-radius: 50px 0 0 50px;
            border: none;
            font-size: 1.1rem;
        }

        .ai_auto_subscribe-form .btn {
            border-radius: 0 50px 50px 0;
            padding: 1.25rem 2rem;
            background: var(--accent-color);
            font-weight: 600;
            border: none;
        }

        /* Footer 样式 */
        #ai_auto_footer {
            background: rgba(26, 58, 109, 0.95);
            color: rgba(255, 255, 255, 0.85);
            padding: 4rem 0 0;
        }

        .ai_auto_footer-section h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-weight: 600;
            position: relative;
            padding-bottom: 0.75rem;
        }

        .ai_auto_footer-section h5:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--secondary-color);
        }

        .ai_auto_footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            margin-bottom: 0.75rem;
            transition: all 0.3s ease;
        }

        .ai_auto_footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }

        .ai_auto_copyright {
            background: 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_main-article {
                height: 400px;
            }
        }

        @media (max-width: 768px) {
            #ai_auto_banner {
                padding: 3rem 0;
            }
            
            .ai_auto_navbar-collapse {
                background: rgba(26, 58, 109, 0.95);
                padding: 1rem;
                border-radius: 20px;
                margin-top: 1rem;
            }
            
            #ai_auto_feature-article .ai_auto_main-article {
                height: 300px;
            }
        }