:root {
            --primary-color: #2e4a7d;
            --secondary-color: #5c8dbd;
            --accent-color-1: #3a9e8f;
            --accent-color-2: #6a5c9a;
            --light-bg: #f8f9fa;
            --dark-text: #333;
            --light-text: #fff;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f0f5ff;
            color: var(--dark-text);
            overflow-x: hidden;
        }
        
        /* 导航栏样式 */
        #ai_auto_navbar {
            background-color: var(--primary-color);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .ai_auto_navbar-brand {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--light-text);
            letter-spacing: 1px;
        }
        
        .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 {
            color: var(--light-text) !important;
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        .ai_auto_search-form {
            position: relative;
        }
        
        .ai_auto_search-input {
            background-color: rgba(255, 255, 255, 0.15);
            border: none;
            border-radius: 30px;
            color: white;
            padding: 0.5rem 1rem 0.5rem 2.5rem;
            transition: all 0.3s ease;
        }
        
        .ai_auto_search-input:focus {
            background-color: rgba(255, 255, 255, 0.25);
            box-shadow: none;
            color: white;
        }
        
        .ai_auto_search-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        
        .ai_auto_search-icon {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.7);
        }
        
        /* Banner样式 */
        #ai_auto_banner {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color-2));
            padding: 5rem 0;
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .ai_auto_banner-content {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        
        .ai_auto_banner-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        
        .ai_auto_banner-desc {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 2rem;
        }
        
        .ai_auto_banner-form {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .ai_auto_banner-input {
            padding: 1rem 1.5rem;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }
        
        .ai_auto_banner-btn {
            position: absolute;
            right: 5px;
            top: 5px;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            background: var(--accent-color-1);
            border: none;
            color: white;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .ai_auto_banner-btn:hover {
            background: #2d8c7f;
        }
        
        /* 文章板块样式 */
        #ai_auto_home-artice {
            padding: 5rem 0;
        }
        
        .ai_auto_section-title {
            position: relative;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 2.5rem;
            color: var(--primary-color);
            text-align: center;
        }
        
        .ai_auto_section-title:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-color-1);
            border-radius: 2px;
        }
        
        /* 特色文章 - 杂志式布局 */
        #ai_auto_feature-article {
            margin-bottom: 5rem;
        }
        
        .ai_auto_magazine-left {
            height: 100%;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            position: relative;
            margin-bottom: 1.5rem;
        }
        
        .ai_auto_magazine-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .ai_auto_magazine-left:hover .ai_auto_magazine-img {
            transform: scale(1.05);
        }
        
        .ai_auto_magazine-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            padding: 2rem 1.5rem 1rem;
            color: white;
        }
        
        .ai_auto_magazine-label {
            background: var(--accent-color-1);
            color: white;
            font-size: 0.8rem;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 0.8rem;
        }
        
        .ai_auto_magazine-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: white;
        }
        
        .ai_auto_magazine-meta {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        
        .ai_auto_magazine-item {
            display: flex;
            margin-bottom: 1.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid rgba(0,0,0,0.1);
        }
        
        .ai_auto_magazine-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        
        .ai_auto_magazine-item-img {
            width: 120px;
            height: 90px;
            object-fit: cover;
            border-radius: 8px;
            margin-right: 1.2rem;
            flex-shrink: 0;
        }
        
        .ai_auto_magazine-item-content {
            flex-grow: 1;
        }
        
        .ai_auto_magazine-item-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: var(--primary-color);
        }
        
        .ai_auto_magazine-item-meta {
            font-size: 0.85rem;
            color: #666;
        }
        
        /* 最近文章 - 时间轴布局 */
        #ai_auto_last-article {
            margin-bottom: 5rem;
            padding: 3rem 0;
            background-color: #f9fbfd;
            border-radius: 15px;
        }
        
        .ai_auto_timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .ai_auto_timeline:before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
            transform: translateX(-50%);
        }
        
        .ai_auto_timeline-item {
            position: relative;
            margin-bottom: 3rem;
            width: 100%;
        }
        
        .ai_auto_timeline-item:nth-child(odd) {
            padding-right: calc(50% + 2rem);
            text-align: right;
        }
        
        .ai_auto_timeline-item:nth-child(even) {
            padding-left: calc(50% + 2rem);
        }
        
        .ai_auto_timeline-content {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            padding: 1.5rem;
            display: flex;
            align-items: center;
        }
        
        .ai_auto_timeline-item:nth-child(odd) .ai_auto_timeline-content {
            flex-direction: row-reverse;
        }
        
        .ai_auto_timeline-img {
            width: 200px;
            height: 150px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        
        .ai_auto_timeline-item:nth-child(odd) .ai_auto_timeline-img {
            margin-left: 1.5rem;
        }
        
        .ai_auto_timeline-item:nth-child(even) .ai_auto_timeline-img {
            margin-right: 1.5rem;
        }
        
        .ai_auto_timeline-text {
            flex-grow: 1;
        }
        
        .ai_auto_timeline-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--primary-color);
        }
        
        .ai_auto_timeline-desc {
            color: #555;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
        }
        
        .ai_auto_timeline-meta {
            font-size: 0.85rem;
            color: #777;
        }
        
        .ai_auto_timeline-date {
            position: absolute;
            top: 0;
            background: var(--accent-color-1);
            color: white;
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
        }
        
        .ai_auto_timeline-item:nth-child(odd) .ai_auto_timeline-date {
            left: calc(50% - 1.5rem);
            transform: translateX(-100%);
        }
        
        .ai_auto_timeline-item:nth-child(even) .ai_auto_timeline-date {
            right: calc(50% - 1.5rem);
            transform: translateX(100%);
        }
        
        /* 推荐文章 - 卡片瀑布布局 */
        #ai_auto_recommend-article {
            margin-bottom: 3rem;
        }
        
        .ai_auto_masonry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .ai_auto_masonry-item {
            break-inside: avoid;
            margin-bottom: 2rem;
        }
        
        .ai_auto_card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .ai_auto_card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }
        
        .ai_auto_card-img-container {
            height: 200px;
            overflow: hidden;
        }
        
        .ai_auto_card-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .ai_auto_card:hover .ai_auto_card-img {
            transform: scale(1.1);
        }
        
        .ai_auto_card-body {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        .ai_auto_card-labels {
            margin-bottom: 0.8rem;
        }
        
        .ai_auto_card-label {
            display: inline-block;
            background: rgba(58, 158, 143, 0.15);
            color: var(--accent-color-1);
            font-size: 0.75rem;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            transition: all 0.3s ease;
        }
        
        .ai_auto_card-label:hover {
            background: var(--accent-color-1);
            color: white;
            text-decoration: none;
        }
        
        .ai_auto_card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--primary-color);
        }
        
        .ai_auto_card-desc {
            color: #555;
            margin-bottom: 1.2rem;
            flex-grow: 1;
        }
        
        .ai_auto_card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #777;
            padding-top: 0.8rem;
            border-top: 1px solid rgba(0,0,0,0.08);
        }
        
        /* 订阅板块样式 */
        #ai_auto_subscribe {
            background: linear-gradient(to right, var(--primary-color), var(--accent-color-2));
            padding: 5rem 0;
            color: white;
            text-align: center;
        }
        
        .ai_auto_subscribe-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        
        .ai_auto_subscribe-desc {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        
        .ai_auto_subscribe-form {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .ai_auto_subscribe-input {
            padding: 1rem 1.5rem;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }
        
        .ai_auto_subscribe-btn {
            padding: 1rem 2.5rem;
            border-radius: 50px;
            background: var(--accent-color-1);
            border: none;
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            margin-top: 1.5rem;
            transition: all 0.3s ease;
        }
        
        .ai_auto_subscribe-btn:hover {
            background: #2d8c7f;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        
        /* Footer样式 */
        #ai_auto_footer {
            background: #1a2a4a;
            color: rgba(255, 255, 255, 0.8);
            padding-top: 4rem;
        }
        
        .ai_auto_footer-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: white;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        
        .ai_auto_footer-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--accent-color-1);
        }
        
        #ai_auto_footer_desc {
            padding-right: 1rem;
        }
        
        .ai_auto_footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1rem;
            display: block;
        }
        
        .ai_auto_footer-desc {
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }
        
        .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;
            display: inline-block;
        }
        
        .ai_auto_footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        
        .ai_auto_footer-contact li {
            display: flex;
            margin-bottom: 1rem;
        }
        
        .ai_auto_footer-contact i {
            color: var(--accent-color-1);
            font-size: 1.2rem;
            margin-right: 1rem;
            width: 20px;
        }
        
        .ai_auto_footer-contact span {
            flex: 1;
        }
        
        .ai_auto_footer-bottom {
            background: rgba(0, 0, 0, 0.2);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .ai_auto_timeline:before {
                left: 30px;
            }
            
            .ai_auto_timeline-item:nth-child(odd) {
                padding-right: 0;
                padding-left: 80px;
                text-align: left;
            }
            
            .ai_auto_timeline-item:nth-child(even) {
                padding-left: 80px;
            }
            
            .ai_auto_timeline-item:nth-child(odd) .ai_auto_timeline-date {
                left: 0;
                transform: translateX(0);
            }
            
            .ai_auto_timeline-item:nth-child(even) .ai_auto_timeline-date {
                left: 0;
                transform: translateX(0);
            }
            
            .ai_auto_timeline-content {
                flex-direction: column;
            }
            
            .ai_auto_timeline-img {
                width: 100%;
                height: 200px;
                margin: 0 0 1.5rem 0 !important;
            }
        }
        
        @media (max-width: 768px) {
            .ai_auto_banner-title {
                font-size: 2.2rem;
            }
            
            .ai_auto_section-title {
                font-size: 1.8rem;
            }
            
            .ai_auto_magazine-item {
                flex-direction: column;
            }
            
            .ai_auto_magazine-item-img {
                width: 100%;
                height: 200px;
                margin-right: 0;
                margin-bottom: 1rem;
            }
        }