/* ===== 全局重置 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F4F6F9;
            color: #1E2A3A;
            line-height: 1.7;
            scroll-behavior: smooth;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==========================================
           🔧 调节点1：头部整体高度
           修改 .header 的 padding 值
           当前设置：上下各18px
           ========================================== */
        .header {
            background: #1A252F !important;
            margin: 0 !important;
            padding: 18px 0 !important;
            border-bottom: none !important;
            box-shadow: none !important;
        }

        header.header {
            min-height: auto !important;
            height: auto !important;
            line-height: normal !important;
        }

        /* ==========================================
           🔧 调节点2：头部内容区内部间距
           ========================================== */
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
        }

        /* ==========================================
           🔧 调节点3：消除缝隙线
           想保留缝隙？注释掉 display: none
           ========================================== */
        .header-divider {
            display: none !important;
            height: 0 !important;
            margin: 0 !important;
            padding: 0 !important;
            border: none !important;
        }

        .logo-area h1 {
            color: #FFFFFF;
            font-size: 24px;
            font-weight: 700;
            margin: 0;
        }

        .logo-area span {
            color: #F39C12;
            font-size: 14px;
            margin-left: 6px;
            font-weight: 600;
        }

        .nav a, .nav .mega-menu-trigger {
            color: #E0E7EF;
            font-weight: 500;
            margin-left: 28px;
            font-size: 16px;
            cursor: pointer;
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
        }

        .nav a:hover, .nav .mega-menu-trigger:hover {
            color: #F39C12;
        }

        /*
           🔧 关键修复：确保菜单面板的 active 状态能正常显示
           hearder3.css 中 .mega-menu-panel 默认是 display:none
           这里通过 !important 强制显示
        */
        .mega-menu-panel.active {
            display: block !important;
            opacity: 1 !important;
            visibility: visible !important;
        }

        /*
           🔧 调节点4：覆盖层样式（确保与 JavaScript 配合）
        */
        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            /*
               🔧 覆盖层背景颜色和透明度
               rgba(红, 绿, 蓝, 透明度)
               0.3 = 30%不透明度，改成0.5会更暗，0.1会更亮
            */
            background: rgba(0, 0, 0, 0.3);
            z-index: 998;
            cursor: pointer;
        }

        .menu-overlay.active {
            display: block !important;
        }

        /* ==========================================
           🔧 调节点5：头部与Banner过渡色
           Banner边缘色 #1A252F 需与头部背景一致
           ========================================== */
        .hero {
            background: radial-gradient(circle at 10% 30%, #2C3E50, #1A252F);
            color: white;
            padding: 70px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
            /*
               🔧 头部和Banner之间要有缝隙？
               改成 margin-top: 2px; 就有2px缝隙
               改成 margin-top: 5px; 就有5px缝隙
            */
            margin: 0;
            border-top: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 40px;
            background: linear-gradient(to top, #F4F6F9 0%, rgba(244, 246, 249, 0.7) 50%, transparent 100%);
            pointer-events: none;
        }

        .hero h2 {
            font-size: 46px;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }

        .hero p {
            font-size: 20px;
            opacity: 0.9;
            margin-bottom: 35px;
            font-weight: 400;
        }

        .search-wrapper {
            max-width: 680px;
            margin: 0 auto 30px;
            display: flex;
            background: white;
            border-radius: 60px;
            padding: 6px 6px 6px 24px;
            box-shadow: 0 12px 30px rgba(0,0,0,0.2);
        }

        .search-wrapper input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 16px;
            padding: 14px 0;
            color: #1E2A3A;
        }

        .search-wrapper input::placeholder {
            color: #9AA9B7;
        }

        .search-wrapper button {
            background: #F39C12;
            border: none;
            color: white;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 50px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.2s;
            box-shadow: 0 6px 14px rgba(243, 156, 18, 0.3);
        }

        .search-wrapper button:hover {
            background: #E67E22;
        }

        /*
           🔧 查看全部选材攻略按钮
           使用 label 标签，配合 hearder6.php 中的 JavaScript
           for="megaMenuToggle" 让点击时触发菜单
        */
        .btn-primary {
            display: inline-block;
            background-color: transparent;
            border: 1.5px solid rgba(255,255,255,0.3);
            color: white;
            padding: 12px 36px;
            border-radius: 40px;
            font-size: 18px;
            font-weight: 500;
            transition: all 0.2s;
            backdrop-filter: blur(8px);
            cursor: pointer;
            font-family: inherit;
            line-height: 1.5;
            text-align: center;
            user-select: none;
        }

        .btn-primary:hover {
            background-color: white;
            color: #1E2A3A;
            border-color: white;
        }

        /* ===== 快速选材入口 ===== */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            margin: 60px 0 30px;
            color: #1E2A3A;
            border-left: 8px solid #F39C12;
            padding-left: 20px;
            letter-spacing: -0.3px;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }

        .category-card {
            background: white;
            border-radius: 24px;
            padding: 28px 16px 20px;
            text-align: center;
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.03), 0 8px 10px -6px rgba(0,0,0,0.02);
            border: 1px solid #EEF2F6;
            transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 25px 35px -12px rgba(0,0,0,0.12);
            border-color: #F39C12;
        }

        .category-icon {
            font-size: 40px;
            margin-bottom: 16px;
        }

        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #1E2A3A;
            margin-bottom: 12px;
        }

        .category-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 6px;
            margin-top: auto;
        }

        .mini-tag {
            background: #F2F5F9;
            color: #4A5A6A;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 30px;
            transition: all 0.15s;
        }

        .category-card:hover .mini-tag {
            background: #FDEBD0;
            color: #D35400;
        }

        /* ===== 热门专题 ===== */
        .featured-topics-wrapper {
            max-width: 1280px;
            margin: 30px auto 0;
            padding: 0 24px;
        }

        .featured-topics {
            margin: 0 0 10px;
        }

        .topics-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .topics-header h3 {
            font-size: 20px;
            font-weight: 700;
            color: #1E2A3A;
        }

        .topics-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 8px;
            scrollbar-width: thin;
        }

        .topic-card {
            flex: 0 0 220px;
            background: white;
            border-radius: 20px;
            padding: 18px;
            box-shadow: 0 8px 20px -6px rgba(0,0,0,0.02);
            border: 1px solid #EEF2F6;
            transition: transform 0.2s;
        }

        .topic-card:hover {
            transform: translateY(-3px);
            border-color: #F39C12;
        }

        .topic-card .topic-icon {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .topic-card h4 {
            font-size: 18px;
            margin-bottom: 6px;
        }

        .topic-card p {
            color: #5A6A7A;
            font-size: 13px;
        }

        /* ===== 主内容区 ===== */
        .main-content-wrapper {
            background: linear-gradient(to bottom, #F4F6F9 0%, #FFFFFF 100%);
            padding: 20px 0 40px;
            margin-top: 20px;
        }

        .main-content {
            display: flex;
            gap: 30px;
            margin: 0 auto;
            align-items: flex-start;    /* 侧边栏与文章列表顶部对齐 */
            max-width: 1280px;
            padding: 0 24px;
        }

        .article-list {
            flex: 1 1 auto;
            min-width: 0;
        }

        .sidebar {
            flex: 0 0 340px;
            width: 340px;
        }

        .article-item {
            display: flex;
            gap: 24px;
            background: white;
            border-radius: 24px;
            padding: 24px;
            margin-bottom: 25px;
            box-shadow: 0 8px 20px -6px rgba(0,0,0,0.02);
            border: 1px solid #EEF2F6;
            transition: all 0.2s;
        }

        .article-item:hover {
            box-shadow: 0 20px 30px -12px rgba(0,0,0,0.08);
            border-color: #E0E7EF;
        }

        .article-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 130px;
            border-radius: 18px;
            overflow: hidden;
            background-color: #D0D9E4;
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-info h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-info h3 a {
            color: #1E2A3A;
        }

        .article-info h3 a:hover {
            color: #F39C12;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 12px;
        }

        .category-tag {
            background: #FDEBD0;
            color: #D35400;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
        }

        .article-desc {
            color: #4A5A6A;
            font-size: 15px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-actions {
            display: flex;
            gap: 16px;
            margin-top: 12px;
            color: #8899AA;
            font-size: 14px;
        }

        .article-actions span {
            display: flex;
            align-items: center;
            gap: 4px;
            cursor: default;
        }

        .load-more-section {
            text-align: center;
            margin: 40px 0 20px;
        }

        .load-more-btn {
            background: white;
            padding: 14px 48px;
            border-radius: 50px;
            font-weight: 600;
            border: 1px solid #E2E8F0;
            color: #1E2A3A;
            transition: all 0.2s;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            display: inline-block;
            cursor: pointer;
        }

        .load-more-btn:hover {
            background: #F39C12;
            color: white;
            border-color: #F39C12;
        }

        .loading-indicator {
            display: none;
            color: #8899AA;
            margin-top: 16px;
        }

        .sidebar-widget {
            background: white;
            border-radius: 24px;
            padding: 28px 24px;
            margin-bottom: 30px;
            box-shadow: 0 8px 20px -6px rgba(0,0,0,0.02);
            border: 1px solid #EEF2F6;
        }

        .widget-title {
            font-size: 20px;
            font-weight: 700;
            color: #1E2A3A;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid #EEF2F6;
        }

        .trust-counter {
            background: #FDEBD0;
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            margin-bottom: 24px;
        }

        .trust-counter .number {
            font-size: 36px;
            font-weight: 800;
            color: #D35400;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            background: #F2F5F9;
            color: #2C3E50;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s;
        }

        .tag:hover {
            background: #F39C12;
            color: white;
        }

        .ad-placeholder {
            background: linear-gradient(145deg, #FDEBD0, #FAD7A1);
            border-radius: 18px;
            padding: 24px;
            text-align: center;
            color: #7B4A1E;
        }

        .ad-placeholder h4 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .ad-contact {
            background: white;
            display: inline-block;
            padding: 10px 24px;
            border-radius: 40px;
            color: #D35400;
            font-weight: 600;
            margin-top: 12px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }

        .hot-list {
            list-style: none;
        }
        .hot-list li {
            display: flex;
            align-items: center;
            margin-bottom: 18px;
        }
        .hot-index {
            width: 24px;
            font-weight: 700;
            color: #F39C12;
        }
        .hot-content {
            flex: 1;
        }
        .hot-content a {
            font-weight: 600;
        }
        .hot-meta {
            font-size: 12px;
            color: #8899AA;
        }

        .footer {
            background-color: #1E2A3A;
            color: #B0C4DE;
            padding: 50px 0 30px;
            margin-top: 60px;
            position: relative;
        }

        .footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #F39C12, #E67E22, #D35400);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: white;
            font-size: 18px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 12px;
        }

        .footer-col a {
            color: #B0C4DE;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-col a:hover {
            color: #F39C12;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
        }

        .footer-links a {
            color: #B0C4DE;
            margin-left: 24px;
        }

        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #1E2A3A;
            color: white;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: all 0.2s;
            opacity: 0;
            visibility: hidden;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        @media (max-width: 900px) {
            .main-content {
                flex-direction: column;
            }
            .sidebar {
                flex: 0 0 auto;
                width: 100%;
            }
            .category-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }