* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        :root {
            --primary: #2A2C3F;
            --secondary: #00D9FF;
            --accent: #FF6B6B;
            --bg-light: #F8F9FA;
            --text-dark: #333333;
            --text-light: #ffffff;
            --transition: all 0.3s ease;
        }
        
        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header Styles */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(42, 44, 63, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-light);
            text-decoration: none;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        
        .logo:hover {
            color: var(--secondary);
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
        }
        
        .nav-menu li {
            margin-left: 30px;
        }
        
        .nav-menu a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        
        .nav-menu a:hover::after {
            width: 100%;
        }
        
        .hamburger {
            display: none;
            cursor: pointer;
            background: none;
            border: none;
        }
        
        .hamburger span {
            display: block;
            width: 25px;
            height: 3px;
            margin: 5px 0;
            background-color: var(--text-light);
            transition: var(--transition);
        }
        
        /* Main Content */
        main {
            padding-top: 80px;
            min-height: 100vh;
        }
        
        .page-header {
            background: linear-gradient(135deg, rgba(42, 44, 63, 0.9), rgba(0, 217, 255, 0.2)), url('../img/11.webp') no-repeat center center/cover;
            padding: 60px 0;
            text-align: center;
            color: var(--text-light);
        }
        
        .page-header h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        
        .page-header p {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }
        
        .content-section {
            padding: 60px 0;
        }
        
        .content-container {
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            padding: 40px;
        }
        
        .content-container h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary);
        }
        
        .content-container h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin: 30px 0 15px;
        }
        
        .content-container p {
            margin-bottom: 15px;
            color: #555;
        }
        
        .content-container ul {
            margin-left: 20px;
            margin-bottom: 15px;
        }
        
        .content-container li {
            margin-bottom: 10px;
            color: #555;
        }
        
        .content-container a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .content-container a:hover {
            text-decoration: underline;
        }
        
        .last-updated {
            text-align: right;
            font-style: italic;
            color: #777;
            margin-top: 30px;
        }
        
        /* Footer */
        footer {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-column {
            flex: 1;
            min-width: 250px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background-color: var(--secondary);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        
        .footer-contact p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .footer-contact i {
            margin-right: 10px;
            color: var(--secondary);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: var(--primary);
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 50px;
                transition: var(--transition);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .hamburger {
                display: block;
            }
            
            .hamburger.active span:nth-child(1) {
                transform: rotate(-45deg) translate(-5px, 6px);
            }
            
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            
            .hamburger.active span:nth-child(3) {
                transform: rotate(45deg) translate(-5px, -6px);
            }
            
            .page-header h1 {
                font-size: 2rem;
            }
            
            .content-container {
                padding: 20px;
            }
            
            .content-container h2 {
                font-size: 1.5rem;
            }
            
            .content-container h3 {
                font-size: 1.2rem;
            }
        }
        
        @media (max-width: 576px) {
            .footer-column {
                min-width: 100%;
            }
        }