* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
            min-height: 100vh;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        header {
            background: rgba(15, 12, 41, 0.95);
            backdrop-filter: blur(15px);
            color: #e0e0e0;
            padding: 25px 0;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid #00d4ff;
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 25px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 32px;
            font-weight: bold;
            text-decoration: none;
            color: #00d4ff;
            transition: all 0.3s ease;
            text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
        }
        
        .logo:hover {
            transform: scale(1.05);
            text-shadow: 0 0 30px rgba(0, 212, 255, 0.8);
        }
        
        .logo i {
            margin-right: 12px;
            font-size: 40px;
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .search-box {
            position: relative;
            flex: 1;
            max-width: 600px;
        }
        
        .search-box input {
            width: 100%;
            padding: 18px 55px 18px 25px;
            border: 2px solid #00d4ff;
            border-radius: 35px;
            outline: none;
            font-size: 16px;
            transition: all 0.3s ease;
            background: rgba(15, 12, 41, 0.8);
            color: #e0e0e0;
        }
        
        .search-box input:focus {
            border-color: #00ff88;
            box-shadow: 0 0 0 8px rgba(0, 255, 136, 0.3);
            background: rgba(15, 12, 41, 0.9);
        }
        
        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            color: white;
            border: none;
            border-radius: 50%;
            width: 45px;
            height: 45px;
            cursor: pointer;
            font-size: 18px;
            transition: all 0.3s ease;
        }
        
        .search-box button:hover {
            transform: translateY(-50%) scale(1.1);
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
        }
        
        .user-info {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        
        .user-info a {
            color: #00d4ff;
            text-decoration: none;
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 25px;
            border-radius: 30px;
            background: rgba(15, 12, 41, 0.8);
            transition: all 0.3s ease;
            font-weight: 600;
            border: 2px solid #00d4ff;
        }
        
        .user-info a:hover {
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.4);
            border-color: transparent;
        }
        
        /* 导航样式 - 居中显示 */
        nav {
            background: rgba(15, 12, 41, 0.95);
            backdrop-filter: blur(15px);
            box-shadow: 0 3px 20px rgba(0, 0, 0, 0.2);
            position: sticky;
            top: 120px;
            z-index: 999;
            border-bottom: 2px solid #00d4ff;
        }
        
        .nav-content {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        
        .nav-menu li a {
            display: block;
            padding: 18px 35px;
            text-decoration: none;
            color: #e0e0e0;
            font-weight: 600;
            font-size: 17px;
            transition: all 0.3s ease;
            border-radius: 30px;
            position: relative;
            overflow: hidden;
            border: 2px solid rgba(0, 212, 255, 0.3);
        }
        
        .nav-menu li a::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            transition: left 0.3s ease;
            z-index: -1;
        }
        
        .nav-menu li a:hover::before {
            left: 0;
        }
        
        .nav-menu li a:hover {
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.4);
            border-color: #00ff88;
        }
        
        .nav-menu li.active a {
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            color: white;
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.4);
            border-color: #00ff88;
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            border: none;
            font-size: 28px;
            color: white;
            cursor: pointer;
            padding: 15px 20px;
            border-radius: 30px;
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.4);
        }
        
        /* Banner样式 */
        .banner {
            background: linear-gradient(rgba(15, 12, 41, 0.9), rgba(48, 43, 99, 0.9)), url('https://picsum.photos/id/1040/1400/500') center/cover no-repeat;
            color: white;
            padding: 150px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin: 50px 0;
            border-radius: 25px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            border: 2px solid #00d4ff;
        }
        
        .banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(45deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 212, 255, 0) 100%);
            animation: shimmer 4s infinite;
        }
        
        @keyframes shimmer {
            0%, 100% { opacity: 0.1; }
            50% { opacity: 0.2; }
        }
        
        .banner h1 {
            font-size: 56px;
            margin-bottom: 30px;
            animation: fadeInUp 1s ease;
            position: relative;
            z-index: 1;
            text-shadow: 0 6px 30px rgba(0, 0, 0, 0.5);
            letter-spacing: 2px;
        }
        
        .banner p {
            font-size: 24px;
            margin-bottom: 40px;
            animation: fadeInUp 1s ease 0.3s both;
            position: relative;
            z-index: 1;
            text-shadow: 0 3px 15px rgba(0, 0, 0, 0.4);
        }
        
        .banner .btn {
            display: inline-block;
            padding: 20px 60px;
            background: linear-gradient(135deg, #00ff88 0%, #00d4ff 100%);
            color: white;
            text-decoration: none;
            border-radius: 40px;
            font-weight: bold;
            font-size: 22px;
            transition: all 0.3s ease;
            animation: fadeInUp 1s ease 0.6s both;
            position: relative;
            z-index: 1;
            box-shadow: 0 10px 35px rgba(0, 255, 136, 0.5);
            border: 2px solid #00ff88;
        }
        
        .banner .btn:hover {
            transform: translateY(-5px) scale(1.05);
            box-shadow: 0 15px 45px rgba(0, 255, 136, 0.6);
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(60px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* 主要内容区 */
        .main-content {
            background: rgba(15, 12, 41, 0.95);
            border-radius: 25px;
            padding: 50px;
            margin: 50px 0;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
            border: 2px solid rgba(0, 212, 255, 0.3);
        }
        
        /* 分类区域 */
        .category-section {
            margin-bottom: 70px;
            scroll-margin-top: 150px;
        }
        
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 3px solid #00d4ff;
        }
        
        .section-title {
            font-size: 38px;
            color: #e0e0e0;
            display: flex;
            align-items: center;
            gap: 15px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        
        .section-title i {
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .section-more {
            color: #00d4ff;
            text-decoration: none;
            font-size: 17px;
            font-weight: 600;
            transition: all 0.3s ease;
            padding: 12px 30px;
            border-radius: 30px;
            border: 2px solid #00d4ff;
        }
        
        .section-more:hover {
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.4);
            border-color: #00ff88;
        }
        
        /* 内容网格 */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .content-item {
            background: rgba(15, 12, 41, 0.8);
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.4s ease;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border: 2px solid rgba(0, 212, 255, 0.3);
        }
        
        .content-item:hover {
            transform: translateY(-12px);
            box-shadow: 0 20px 60px rgba(0, 212, 255, 0.35);
            border-color: #00ff88;
        }
        
        .content-cover {
            width: 100%;
            height: 350px;
            object-fit: cover;
            position: relative;
        }
        
        .content-cover::after {
            content: '\f005';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 80px;
            color: rgba(0, 212, 255, 0.9);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .content-item:hover .content-cover::after {
            opacity: 1;
        }
        
        .content-info {
            padding: 25px;
        }
        
        .content-title {
            font-size: 22px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #e0e0e0;
            text-decoration: none;
            display: block;
            line-height: 1.4;
            transition: color 0.3s ease;
        }
        
        .content-title:hover {
            color: #00d4ff;
        }
        
        .content-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            color: #a0a0a0;
            margin-top: 15px;
        }
        
        .content-tag {
            padding: 6px 18px;
            border-radius: 15px;
            font-size: 13px;
            font-weight: 600;
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            color: white;
        }
        
        .content-date {
            color: #808080;
        }
        
        /* 页脚样式 */
        footer {
            background: rgba(15, 12, 41, 0.95);
            color: #e0e0e0;
            padding: 80px 0 50px 0;
            margin-top: 70px;
            border-top: 3px solid #00d4ff;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 60px;
            margin-bottom: 60px;
        }
        
        .footer-section h3 {
            margin-bottom: 30px;
            color: #00d4ff;
            font-size: 24px;
            position: relative;
            padding-left: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .footer-section h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 30px;
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            border-radius: 3px;
        }
        
        .footer-section p {
            line-height: 2;
            color: #b0b0b0;
            font-size: 16px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 20px;
        }
        
        .footer-links a {
            color: #b0b0b0;
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .footer-links a:hover {
            color: #00d4ff;
            transform: translateX(10px);
        }
        
        .footer-links a i {
            font-size: 15px;
        }
        
        .social-links {
            display: flex;
            gap: 20px;
            margin-top: 25px;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            background: rgba(15, 12, 41, 0.8);
            color: #00d4ff;
            border-radius: 50%;
            transition: all 0.3s ease;
            text-decoration: none;
            border: 2px solid rgba(0, 212, 255, 0.3);
            font-size: 26px;
        }
        
        .social-links a:hover {
            background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
            color: white;
            transform: translateY(-5px) scale(1.1);
            border-color: #00ff88;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 40px;
            border-top: 2px solid rgba(0, 212, 255, 0.2);
            color: #808080;
            font-size: 15px;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .content-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            }
        }
        
        @media (max-width: 992px) {
            .container {
                padding: 0 15px;
            }
            
            .content-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 25px;
            }
        }
        
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            .search-box {
                max-width: 100%;
                width: 100%;
            }
            
            .nav-content {
                flex-direction: column;
            }
            
            .nav-menu {
                flex-direction: column;
                width: 100%;
                text-align: center;
                display: none;
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .banner h1 {
                font-size: 42px;
            }
            
            .banner p {
                font-size: 20px;
            }
            
            .section-title {
                font-size: 30px;
            }
            
            .content-grid {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
            
            .content-cover {
                height: 300px;
            }
            
            .content-info {
                padding: 20px;
            }
            
            .content-title {
                font-size: 20px;
            }
        }
        
        @media (max-width: 576px) {
            .banner {
                padding: 120px 0;
            }
            
            .banner h1 {
                font-size: 36px;
            }
            
            .main-content {
                padding: 35px;
            }
            
            .section-title {
                font-size: 26px;
            }
            
            .content-grid {
                grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            }
            
            .content-cover {
                height: 260px;
            }
            
            .content-info {
                padding: 15px;
            }
            
            .content-title {
                font-size: 18px;
            }
            
            .content-meta {
                font-size: 13px;
            }
        }