:root {
            --primary-dark: #0a192f;
            --primary-blue: #172a45;
            --accent-purple: #7f5af0;
            --accent-cyan: #2ec4b6;
            --text-primary: #e6f1ff;
            --text-secondary: #8892b0;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Roboto', sans-serif;
            background: var(--primary-dark);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
        }
        
        /* 粒子背景容器 */
        #particles-js {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: -1;
            background: linear-gradient(135deg, var(--primary-dark) 0%, #1a1a2e 100%);
        }
        
        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 1.5rem 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: rgba(10, 25, 47, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
        }
        
        .logo span {
            color: var(--accent-purple);
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 2.5rem;
        }
        
        .nav-links a {
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1.1rem;
            transition: color 0.3s ease;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--accent-purple);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background: var(--accent-purple);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* 页面标题区 */
        .page-header {
            padding: 8rem 5% 4rem;
            text-align: center;
            background: linear-gradient(135deg, rgba(10, 25, 47, 0.9) 0%, rgba(26, 26, 46, 0.9) 100%);
        }
        
        .page-header h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            background: linear-gradient(90deg, var(--text-primary), var(--accent-purple));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .page-header p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 新闻列表容器 */
        .news-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 5%;
        }
        
        /* 新闻筛选 */
        .news-filters {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
            justify-content: center;
        }
        
        .filter-btn {
            padding: 0.6rem 1.5rem;
            border-radius: 20px;
            background: rgba(127, 90, 240, 0.1);
            color: var(--accent-purple);
            border: 1px solid var(--accent-purple);
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
        }
        
        .filter-btn:hover, .filter-btn.active {
            background: var(--accent-purple);
            color: white;
        }
        
        /* 新闻列表 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }
        
        .news-item {
            background: rgba(23, 42, 69, 0.7);
            border-radius: 8px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            backdrop-filter: blur(5px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .news-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
        }
        
        .news-image {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        
        .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .news-item:hover .news-image img {
            transform: scale(1.05);
        }
        
        .news-date {
            position: absolute;
            top: 20px;
            left: 20px;
            background: rgba(10, 25, 47, 0.8);
            color: white;
            padding: 0.8rem;
            text-align: center;
            border-radius: 4px;
            line-height: 1;
        }
        
        .date-day {
            font-size: 1.8rem;
            font-weight: 700;
            display: block;
            background: linear-gradient(45deg, var(--accent-purple), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .date-month {
            font-size: 0.9rem;
            text-transform: uppercase;
        }
        
        .news-content {
            padding: 1.5rem;
        }
        
        .news-meta {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        
        .news-category {
            color: var(--accent-purple);
            font-weight: 500;
        }
        
        .news-comments {
            display: flex;
            align-items: center;
        }
        
        .news-comments .material-icons {
            font-size: 1rem;
            margin-right: 0.3rem;
        }
        
        .news-title {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        
        .news-excerpt {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }
        
        .news-link {
            display: inline-flex;
            align-items: center;
            color: var(--accent-purple);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }
        
        .news-link:hover {
            color: var(--accent-cyan);
        }
        
        .news-link .material-icons {
            font-size: 1.2rem;
            margin-left: 0.3rem;
            transition: transform 0.3s ease;
        }
        
        .news-link:hover .material-icons {
            transform: translateX(3px);
        }
        
        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin-top: 3rem;
        }
        
        .page-item {
            list-style: none;
        }
        
        .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 4px;
            background: rgba(127, 90, 240, 0.1);
            color: var(--text-primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .page-link:hover, .page-link.active {
            background: var(--accent-purple);
            color: white;
        }
        
        .page-link.disabled {
            opacity: 0.5;
            pointer-events: none;
        }
        
        /* 页脚 */
        footer {
            background: #0a0e17;
            padding: 3rem 5%;
            text-align: center;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .footer-logo {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            display: inline-block;
        }
        
        .footer-logo span {
            color: var(--accent-purple);
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .footer-links a:hover {
            color: var(--accent-purple);
        }
        
        .footer-social {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        
        .footer-social a {
            color: var(--text-secondary);
            font-size: 1.5rem;
            transition: color 0.3s ease;
        }
        
        .footer-social a:hover {
            color: var(--accent-purple);
        }
        
        .copyright {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: rgba(10, 25, 47, 0.95);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                transition: left 0.5s ease;
                backdrop-filter: blur(10px);
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 1.5rem 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .page-header h1 {
                font-size: 2.5rem;
            }
            
            .news-list {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .page-header h1 {
                font-size: 2rem;
            }
            
            .page-header p {
                font-size: 1rem;
            }
        }