/* 主内容区 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }
        body {
            background-color: #f8f9fc;
            color: #333;
            line-height: 1.6;
             margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        input, select {
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 8px 10px;
            font-size: 13px;
        }
    
 .news-hub-hero {
    background: linear-gradient(90deg, #eef5ff, #f8fbff);
    border-bottom: 1px solid var(--line);
    padding: 38px max(18px, calc((100vw - 1180px) / 2));
}
        .container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: 30px;
        }

        /* 左侧栏目导航 */
        .sidebar-nav h3{padding-bottom:10px ;}
        .sidebar-nav {
            background: #fff;
            border: 1px solid #eee;
            border-radius: 4px;
            padding: 20px;
        }
        .sidebar-nav .desc {
            font-size: 12px;
            color: #666;
            margin-bottom: 15px;
        }
        .sidebar-nav ul li {
            margin-bottom: 8px;
            border: 1px solid #dcdcdc;
    border-radius: 6px;
    background: #f8f9fc;
        }
        .sidebar-nav ul li button {
            width: 100%;
            text-align: left;
            padding: 8px 10px;
            border-radius: 4px;
            font-size: 13px;
            color: #666;
            transition: all 0.3s;
        }
        .sidebar-nav ul li button.active,
        .sidebar-nav ul li button:hover {
            background: #007bff;
            color: #fff;
        }

          /* 教程列表 */
        .tutorial-section .featured-card {
            background: #003377;
            color: #fff;
            padding: 25px;
            border-radius: 4px;
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
		.featured-card .info{width:100%;position: relative}
        .featured-card .info .tag {
            font-size: 11px;
            background: #ffd100;
            color: #000;
            padding: 2px 6px;
            border-radius: 2px;
            display: inline-block;
            margin-bottom: 8px;
        }
        .featured-card .info h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .featured-card .info p {
            font-size: 12px;
            opacity: 0.8;
            margin-bottom: 15px;
        }
        .featured-card .meta {
            font-size: 11px;
            opacity: 0.7;
            display: flex;
            gap: 15px;
			border-top: 1px solid #fff;
			    padding-top: 15px;
        }
		.featured-card .meta  span{
			color:#ffd100;
			}
		
		.featured-card .meta  button a{
		    font-size: 13px;
			color:#fff;	
			position: absolute;
			right:0px ;
			bottom: 0px
		}
      

        .latest-title {
            font-size: 14px;
            margin-bottom: 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .latest-title span {
            font-size: 11px;
            color: #999;
        }
        .latest-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .latest-card {
            background: #fff;
            border: 1px solid #eee;
            border-radius: 4px;
            padding: 20px;
        }
        .latest-card h4 {
            font-size: 15px;
            margin-bottom: 10px;
			color:#003377;
        }
		.latest-card h3 {
		    font-size: 18px;
		    margin-bottom: 10px;
			color:#003377;
		}
        .latest-card p {
            font-size: 12px;
            color: #666;
            margin-bottom: 15px;
        }
        .latest-card .tags {
            display: flex;
            gap: 8px;
            margin-bottom: 10px;
        }
        .latest-card .tag {
            font-size: 11px;
            background: #f0f7ff;
            color: #007bff;
            padding: 2px 6px;
            border-radius: 2px;
        }
        .latest-card .meta {
            font-size: 11px;
            color: #999;
            display: flex;
            gap: 15px;
        }
        
        /* 响应式适配 */
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            .sidebar-nav {
                order: -1;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 4px 8px rgba(0,0,0,0.1);
                display: none;
                gap: 12px;
            }
            .nav-links.active {
                display: flex;
            }
        }

        @media (max-width: 768px) {
            .banner-title {
                font-size: 22px;
            }
            .latest-grid {
                grid-template-columns: 1fr;
            }
            .featured-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            .bottom-form {
                flex-direction: column;
                align-items: stretch;
            }
            .bottom-form input,
            .bottom-form select,
            .bottom-form button {
                width: 100%;
            }
            .float-btns {
                display: none;
            }
            .header-tel {
                display: none;
            }
        }
        /* 响应式适配 */
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 4px 8px rgba(0,0,0,0.1);
                display: none;
                gap: 12px;
            }
            .nav-links.active {
                display: flex;
            }
            .quick-nav {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .banner-title {
                font-size: 22px;
            }
            .quick-nav {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
            }
            .news-tag {
                width: 100%;
                padding: 8px 0;
            }
            .bottom-form {
                flex-direction: column;
                align-items: stretch;
            }
            .bottom-form input,
            .bottom-form select,
            .bottom-form button {
                width: 100%;
            }
            .float-btns {
                display: none;
            }
            .header-tel {
                display: none;
            }
        }