:root {
            --primary: #00ffff;
            --secondary: #ff00ff;
            --dark: #0a0a1a;
            --darker: #050510;
            --light: #ffffff;
            --gray: #a0a0c0;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--dark);
            color: var(--light);
            overflow-x: hidden;
            line-height: 1.6;
        }
        
        /* 粒子背景 */
        #particles-js {
            position: fixed;
            width: 100%;
            height: 100%;
            z-index: -1;
        }
        
        /* 导航栏 */
        header {
            background-color: rgba(10, 10, 26, 0.9);
            backdrop-filter: blur(10px);
            position: fixed;
            width: 100%;
            z-index: 1000;
            padding: 1rem 2rem;
            border-bottom: 1px solid rgba(0, 255, 255, 0.2);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }
        
        .nav-menu a {
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .nav-menu a:hover {
            color: var(--primary);
        }
        
        .nav-menu a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background: var(--primary);
            transition: width 0.3s ease;
        }
        
        .nav-menu a:hover::after {
            width: 100%;
        }
        
        /* 登录按钮样式 */
        .login-btn {
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            color: var(--dark);
            padding: 0.6rem 1.5rem;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
            box-shadow: 0 5px 15px rgba(0, 255, 255, 0.3);
            border: none;
            cursor: pointer;
        }
        
        .login-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 255, 255, 0.5);
        }
        
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* 主内容区域 */
        .main-content {
            min-height: 100vh;
            padding-top: 80px;
            display: flex;
            flex-direction: column;
        }
        
        .page-hero {
            padding: 6rem 2rem 4rem;
            text-align: center;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        
        .page-hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .page-hero p {
            font-size: 1.2rem;
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto 2rem;
        }
        
        /* 内容区域 */
        .content-area {
            flex: 1;
            padding: 2rem;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        
        .content-placeholder {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            padding: 3rem;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 2rem;
        }
        
        .content-placeholder h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }
        
        .content-placeholder p {
            color: var(--gray);
            margin-bottom: 1.5rem;
        }
        
        /* 页脚 */
        footer {
            background-color: var(--darker);
            padding: 4rem 2rem 2rem;
            border-top: 1px solid rgba(0, 255, 255, 0.2);
        }
        
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        
        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            position: relative;
            display: inline-block;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            width: 40px;
            height: 2px;
            background: var(--primary);
            bottom: -5px;
            left: 0;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        
        .footer-links a {
            color: var(--gray);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        
        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--light);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .social-link:hover {
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background: var(--darker);
                width: 80%;
                height: calc(100vh - 70px);
                padding: 2rem;
                transition: right 0.3s ease;
                border-left: 1px solid rgba(0, 255, 255, 0.2);
            }
            
            .nav-menu.active {
                right: 0;
            }
            
            .mobile-toggle {
                display: block;
            }
            
            .page-hero h1 {
                font-size: 2.5rem;
            }
            
            .page-hero p {
                font-size: 1rem;
            }
        }
        
        @media (max-width: 576px) {
            .page-hero {
                padding: 4rem 1rem 2rem;
            }
            
            .page-hero h1 {
                font-size: 2rem;
            }
            
            .content-area {
                padding: 1rem;
            }
            
            .content-placeholder {
                padding: 2rem 1rem;
            }
        }