/* 独享CSS部分 - 知识库页面专用 */
        /* 动态背景 */
        .dynamic-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .bg-element {
            position: absolute;
            border-radius: 50%;
            background: rgba(0, 102, 255, 0.05);
            animation: float 15s infinite linear;
        }

        .bg-element:nth-child(1) {
            width: 300px;
            height: 300px;
            top: -150px;
            right: -100px;
            animation-duration: 25s;
        }

        .bg-element:nth-child(2) {
            width: 200px;
            height: 200px;
            bottom: -50px;
            left: -50px;
            animation-duration: 20s;
            animation-direction: reverse;
        }

        .bg-element:nth-child(3) {
            width: 150px;
            height: 150px;
            top: 50%;
            right: 10%;
            animation-duration: 30s;
        }

        /* 页面标题区域 */
        .page-hero {
            height: 50vh;
            position: relative;
            overflow: hidden;
            margin-top: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: white;
        }

        .page-hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient);
            z-index: -2;
        }

        .page-hero-content {
            max-width: 900px;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .page-hero p {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .page-hero-shape {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100px;
            background: var(--light);
            clip-path: polygon(0 100%, 100% 100%, 100% 0, 0 100%);
            z-index: -1;
        }

        /* 知识库筛选器 */
        .knowledge-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 50px;
        }

        .filter-btn {
            padding: 12px 25px;
            background: white;
            border: 2px solid #E0E6ED;
            border-radius: 50px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-btn.active, .filter-btn:hover {
            background: var(--gradient);
            color: white;
            border-color: transparent;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        /* 知识库网格 */
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }

        .knowledge-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            transform: translateY(50px);
            opacity: 0;
        }

        .knowledge-card.animated {
            transform: translateY(0);
            opacity: 1;
        }

        .knowledge-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 102, 255, 0.2);
        }

        .knowledge-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient);
        }

        .knowledge-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .knowledge-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .knowledge-card:hover .knowledge-image img {
            transform: scale(1.05);
        }

        .knowledge-content {
            padding: 25px;
        }

        .knowledge-category {
            display: inline-block;
            background: var(--gradient-secondary);
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .knowledge-content h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .knowledge-content h3 a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }

        .knowledge-content h3 a:hover {
            color: var(--primary);
        }

        .knowledge-content p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .knowledge-meta {
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .knowledge-meta span {
            display: flex;
            align-items: center;
        }

        .knowledge-meta i {
            margin-right: 5px;
            color: var(--accent);
        }

        .read-more {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
        }

        .read-more i {
            margin-left: 8px;
            transition: var(--transition);
        }

        .read-more:hover {
            color: var(--primary-dark);
        }

        .read-more:hover i {
            transform: translateX(5px);
        }

        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 50px;
            gap: 10px;
        }

        .page-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: white;
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .page-num:hover {
            background: var(--gradient);
            color: white;
            transform: translateY(-3px);
        }

        .page-num-current {
            background: var(--gradient);
            color: white;
        }

        /* 搜索框样式 */
        .search-box {
            position: relative;
            margin-bottom: 30px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .search-box input {
            width: 100%;
            padding: 15px 20px;
            border: 2px solid #E0E6ED;
            border-radius: 50px;
            font-size: 16px;
            transition: var(--transition);
        }

        .search-box input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
        }

        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--gradient);
            color: white;
            border: none;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .search-box button:hover {
            transform: translateY(-50%) scale(1.1);
        }