:root {
            --ai_auto_primary: #2E7D32;
            --ai_auto_secondary: #FF8F00;
            --ai_auto_accent1: #1565C0;
            --ai_auto_accent2: #7B1FA2;
            --ai_auto_light: #f8f9fa;
            --ai_auto_dark: #212529;
        }
        
        /* 拟物化设计元素 */
        .ai_auto_neu {
            border-radius: 16px;
            background: #e0e0e0;
            box-shadow:  10px 10px 20px #c5c5c5, 
                         -10px -10px 20px #fbfbfb;
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: all 0.3s ease;
        }
        
        .ai_auto_neu:hover {
            box-shadow:  5px 5px 10px #c5c5c5, 
                         -5px -5px 10px #fbfbfb;
        }
        
        .ai_auto_neu_btn {
            border-radius: 12px;
            background: linear-gradient(145deg, #2E7D32, #1b5e20);
            box-shadow:  5px 5px 10px #c5c5c5, 
                         -5px -5px 10px #fbfbfb;
            color: white !important;
            border: none;
            padding: 10px 20px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .ai_auto_neu_btn:hover {
            box-shadow:  2px 2px 5px #c5c5c5, 
                         -2px -2px 5px #fbfbfb;
            transform: translateY(2px);
        }
        
        .ai_auto_neu_inset {
            border-radius: 12px;
            background: #e0e0e0;
            box-shadow: inset 5px 5px 10px #c5c5c5, 
                        inset -5px -5px 10px #fbfbfb;
            padding: 20px;
        }
        
        /* 导航样式 */
        #ai_auto_navbar {
            background-color: var(--ai_auto_primary);
            padding: 15px 0;
            border-bottom: 3px solid #1b5e20;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .ai_auto_nav_link {
            color: white !important;
            font-weight: 500;
            position: relative;
            padding: 5px 15px !important;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        
        .ai_auto_nav_link:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        
        .ai_auto_nav_link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 15px;
            width: 0;
            height: 2px;
            background: var(--ai_auto_secondary);
            transition: width 0.3s ease;
        }
        
        .ai_auto_nav_link:hover::after {
            width: calc(100% - 30px);
        }
        
        /* Banner 样式 */
        #ai_auto_banner {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1518834107812-67b0b7c58434?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            padding: 100px 0;
            color: white;
            border-bottom: 8px solid var(--ai_auto_primary);
            position: relative;
            overflow: hidden;
        }
        
        #ai_auto_banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, transparent 20%, var(--ai_auto_primary) 150%);
            opacity: 0.3;
        }
        
        .ai_auto_search_form {
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 文章区域 */
        #ai_auto_home-artice {
            background-color: #f8f9fa;
            padding: 60px 0;
            position: relative;
        }
        
        #ai_auto_home-artice::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 20px;
            background: linear-gradient(to bottom, rgba(46, 125, 50, 0.3), transparent);
        }
        
        .ai_auto_section_title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 30px;
            font-weight: 700;
            color: var(--ai_auto_dark);
        }
        
        .ai_auto_section_title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100px;
            height: 4px;
            background: var(--ai_auto_secondary);
            border-radius: 2px;
        }
        
        /* 特色文章 - 杂志式排版 */
        .ai_auto_feature_main {
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            height: 100%;
            min-height: 400px;
            transition: transform 0.3s ease;
        }
        
        .ai_auto_feature_main:hover {
            transform: scale(1.02);
        }
        
        .ai_auto_feature_main_img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .ai_auto_feature_main:hover .ai_auto_feature_main_img {
            transform: scale(1.05);
        }
        
        .ai_auto_feature_main_content {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 25px;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            color: white;
        }
        
        .ai_auto_feature_side {
            height: 100%;
        }
        
        .ai_auto_feature_side_item {
            display: flex;
            margin-bottom: 20px;
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
        
        .ai_auto_feature_side_item:hover {
            transform: translateY(-5px);
        }
        
        .ai_auto_feature_side_img {
            width: 120px;
            height: 100px;
            object-fit: cover;
            flex-shrink: 0;
        }
        
        /* 最近文章 - 时间线卡片 */
        .ai_auto_timeline_card {
            position: relative;
            padding-left: 30px;
            margin-bottom: 30px;
            border-left: 3px solid var(--ai_auto_secondary);
            border-radius: 0 8px 8px 0;
            background: white;
            padding: 20px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }
        
        .ai_auto_timeline_card::before {
            content: '';
            position: absolute;
            top: 25px;
            left: -8px;
            width: 14px;
            height: 14px;
            background: var(--ai_auto_secondary);
            border-radius: 50%;
        }
        
        .ai_auto_timeline_date {
            background: var(--ai_auto_primary);
            color: white;
            padding: 5px 15px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 15px;
            font-size: 0.9rem;
        }
        
        /* 推荐文章 - 图文背景融合 */
        .ai_auto_fusion_card {
            position: relative;
            height: 250px;
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 25px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        
        .ai_auto_fusion_img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .ai_auto_fusion_content {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 20px;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            color: white;
            transform: translateY(100%);
            transition: transform 0.4s ease;
        }
        
        .ai_auto_fusion_card:hover .ai_auto_fusion_content {
            transform: translateY(0);
        }
        
        .ai_auto_fusion_card:hover .ai_auto_fusion_img {
            transform: scale(1.1);
        }
        
        /* 订阅区域 */
        #ai_auto_subscribe {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--ai_auto_primary), #1b5e20);
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        #ai_auto_subscribe::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url("https://images.unsplash.com/photo-1495195129352-aeb325a55b65?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1776&q=80");
            background-size: cover;
            opacity: 0.1;
        }
        
        .ai_auto_subscribe_form {
            max-width: 600px;
            margin: 0 auto;
        }
        
        /* Footer 样式 */
        #ai_auto_footer {
            background-color: var(--ai_auto_dark);
            color: #adb5bd;
            padding-top: 60px;
        }
        
        .ai_auto_footer_title {
            color: white;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .ai_auto_footer_title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--ai_auto_secondary);
        }
        
        .ai_auto_footer_link {
            color: #adb5bd;
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: all 0.3s ease;
        }
        
        .ai_auto_footer_link:hover {
            color: white;
            transform: translateX(5px);
        }
        
        .ai_auto_copyright {
            border-top: 1px solid #495057;
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            #ai_auto_banner {
                padding: 60px 0;
            }
            
            .ai_auto_feature_side_item {
                flex-direction: column;
            }
            
            .ai_auto_feature_side_img {
                width: 100%;
                height: 150px;
            }
        }