:root {
            --ai_auto_primary: #1A56DB;
            --ai_auto_secondary: #2D9CDB;
            --ai_auto_accent1: #27AE60;
            --ai_auto_accent2: #EB5757;
            --ai_auto_dark: #0F172A;
            --ai_auto_light: #F8FAFC;
            --ai_auto_gray: #64748B;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--ai_auto_light);
            color: var(--ai_auto_dark);
            line-height: 1.6;
        }
        
        /* 导航条样式 */
        #ai_auto_navbar {
            background-color: var(--ai_auto_dark);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .ai_auto_navbar-brand {
            color: white;
            font-weight: 700;
            font-size: 1.5rem;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .ai_auto_navbar-brand i {
            color: var(--ai_auto_accent2);
            margin-right: 8px;
        }
        
        .ai_auto_nav-link {
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            border-radius: 4px;
            transition: all 0.3s;
        }
        
        .ai_auto_nav-link:hover {
            color: white;
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        .ai_auto_search-form {
            position: relative;
        }
        
        .ai_auto_search-input {
            background-color: rgba(255, 255, 255, 0.1);
            border: none;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            width: 200px;
            transition: all 0.3s;
        }
        
        .ai_auto_search-input:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.3);
            background-color: rgba(255, 255, 255, 0.15);
            width: 250px;
        }
        
        .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(15, 23, 42, 0.9), rgba(15, 23, 42, 0.8)), 
                        url('https://images.unsplash.com/photo-1576091160550-2173dba999ef?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 6rem 0;
            text-align: center;
            margin-bottom: 4rem;
        }
        
        .ai_auto_banner-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: white;
        }
        
        .ai_auto_banner-info {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2.5rem;
            opacity: 0.9;
        }
        
        .ai_auto_banner-search {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .ai_auto_banner-input {
            padding: 1rem 1.5rem;
            border-radius: 50px;
            border: none;
            width: 100%;
            font-size: 1.1rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        /* 文章板块样式 */
        #ai_auto_home-artice {
            padding: 3rem 0;
        }
        
        .ai_auto_section-title {
            position: relative;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            font-weight: 700;
            color: var(--ai_auto_dark);
        }
        
        .ai_auto_section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background-color: var(--ai_auto_primary);
            border-radius: 2px;
        }
        
        /* 特色文章 - 卡片堆叠式 */
        #ai_auto_feature-article .ai_auto_article-card {
            border-radius: 12px;
            overflow: hidden;
            border: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        
        #ai_auto_feature-article .ai_auto_article-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }
        
        .ai_auto_article-img-container {
            height: 220px;
            overflow: hidden;
        }
        
        .ai_auto_article-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .ai_auto_article-card:hover .ai_auto_article-img {
            transform: scale(1.05);
        }
        
        .ai_auto_article-body {
            padding: 1.5rem;
        }
        
        .ai_auto_article-title {
            font-weight: 700;
            margin-bottom: 0.8rem;
            font-size: 1.3rem;
            color: var(--ai_auto_dark);
            text-decoration: none;
            display: block;
            transition: color 0.3s;
        }
        
        .ai_auto_article-title:hover {
            color: var(--ai_auto_primary);
        }
        
        .ai_auto_article-desc {
            color: var(--ai_auto_gray);
            margin-bottom: 1.2rem;
            font-size: 0.95rem;
        }
        
        .ai_auto_article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--ai_auto_gray);
        }
        
        .ai_auto_article-author {
            display: flex;
            align-items: center;
        }
        
        .ai_auto_article-author i {
            margin-right: 5px;
            color: var(--ai_auto_secondary);
        }
        
        .ai_auto_article-date i {
            margin-right: 5px;
            color: var(--ai_auto_accent1);
        }
        
        .ai_auto_article-tags {
            display: flex;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        
        .ai_auto_article-tag {
            background-color: rgba(39, 174, 96, 0.1);
            color: var(--ai_auto_accent1);
            font-size: 0.75rem;
            padding: 0.25rem 0.8rem;
            border-radius: 30px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .ai_auto_article-tag:hover {
            background-color: var(--ai_auto_accent1);
            color: white;
        }
        
        /* 最近文章 - 时间轴布局 */
        #ai_auto_last-article {
            margin-top: 4rem;
        }
        
        .ai_auto_timeline {
            position: relative;
            padding-left: 30px;
            margin-left: 10px;
        }
        
        .ai_auto_timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background-color: var(--ai_auto_secondary);
            border-radius: 2px;
        }
        
        .ai_auto_timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
            padding-left: 25px;
        }
        
        .ai_auto_timeline-item::before {
            content: '';
            position: absolute;
            left: -33px;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--ai_auto_secondary);
            border: 3px solid white;
            box-shadow: 0 0 0 2px var(--ai_auto_secondary);
        }
        
        .ai_auto_timeline-date {
            background-color: var(--ai_auto_primary);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
            display: inline-block;
            margin-bottom: 0.8rem;
        }
        
        .ai_auto_timeline-content {
            background-color: white;
            border-radius: 8px;
            padding: 1.5rem;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            transition: all 0.3s;
        }
        
        .ai_auto_timeline-content:hover {
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.12);
            transform: translateX(5px);
        }
        
        .ai_auto_timeline-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
            color: var(--ai_auto_dark);
            text-decoration: none;
            display: block;
        }
        
        .ai_auto_timeline-title:hover {
            color: var(--ai_auto_primary);
        }
        
        .ai_auto_timeline-meta {
            display: flex;
            align-items: center;
            font-size: 0.85rem;
            color: var(--ai_auto_gray);
            margin-top: 0.8rem;
        }
        
        .ai_auto_timeline-meta i {
            margin-right: 5px;
        }
        
        /* 推荐文章 - 图文背景融合卡 */
        #ai_auto_recommend-article {
            margin-top: 4rem;
        }
        
        .ai_auto_overlay-card {
            position: relative;
            height: 350px;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .ai_auto_overlay-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .ai_auto_overlay-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 2rem;
            background: linear-gradient(transparent, rgba(15, 23, 42, 0.9));
            color: white;
            transform: translateY(100px);
            transition: transform 0.5s;
        }
        
        .ai_auto_overlay-card:hover .ai_auto_overlay-content {
            transform: translateY(0);
        }
        
        .ai_auto_overlay-card:hover .ai_auto_overlay-img {
            transform: scale(1.05);
        }
        
        .ai_auto_overlay-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: white;
            text-decoration: none;
        }
        
        .ai_auto_overlay-meta {
            display: flex;
            font-size: 0.9rem;
            opacity: 0.8;
            margin-top: 0.8rem;
        }
        
        .ai_auto_overlay-meta span {
            margin-right: 1.2rem;
            display: flex;
            align-items: center;
        }
        
        .ai_auto_overlay-meta i {
            margin-right: 5px;
        }
        
        /* 订阅板块 */
        #ai_auto_subscribe {
            background-color: var(--ai_auto_dark);
            color: white;
            padding: 5rem 0;
            margin-top: 4rem;
        }
        
        .ai_auto_subscribe-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        
        .ai_auto_subscribe-info {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        
        .ai_auto_subscribe-form {
            max-width: 500px;
            margin: 0 auto;
        }
        
        .ai_auto_subscribe-input {
            padding: 1rem 1.5rem;
            border-radius: 50px;
            border: none;
            width: 100%;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        
        .ai_auto_subscribe-btn {
            background-color: var(--ai_auto_accent1);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s;
            width: 100%;
        }
        
        .ai_auto_subscribe-btn:hover {
            background-color: #219653;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        /* Footer样式 */
        #ai_auto_footer {
            background-color: var(--ai_auto_dark);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 4rem;
        }
        
        .ai_auto_footer-title {
            color: white;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        
        .ai_auto_footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--ai_auto_secondary);
        }
        
        #ai_auto_footer_desc {
            padding-right: 2rem;
        }
        
        #ai_auto_footer_desc .ai_auto_footer-title {
            font-size: 1.5rem;
            color: white;
            margin-bottom: 1rem;
        }
        
        #ai_auto_footer_desc .ai_auto_footer-title i {
            color: var(--ai_auto_accent2);
            margin-right: 8px;
        }
        
        .ai_auto_footer-logo {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        
        .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, 0.8);
            text-decoration: none;
            transition: all 0.3s;
            display: flex;
            align-items: center;
        }
        
        .ai_auto_footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        
        .ai_auto_footer-links a i {
            margin-right: 8px;
            width: 20px;
            color: var(--ai_auto_secondary);
        }
        
        .ai_auto_footer-contact li {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1rem;
        }
        
        .ai_auto_footer-contact i {
            margin-right: 10px;
            color: var(--ai_auto_secondary);
            margin-top: 4px;
        }
        
        .ai_auto_footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
        }