* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
                        url('https://images.unsplash.com/photo-1523050854058-8df90110c9f1?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') no-repeat center center fixed;
            background-size: cover;
            color: white;
        }

        header {
            padding: 20px 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background-color: rgba(0, 0, 0, 0.7);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo-icon {
            font-size: 2.5rem;
            color: #1e88e5;
        }

        .logo-text {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
        }

        .logo-text span {
            color: #1e88e5;
        }

        .main-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 0 20px;
            text-align: center;
        }

        .welcome-text {
            margin-bottom: 50px;
            max-width: 800px;
        }

        .welcome-text h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }

        .welcome-text p {
            font-size: 1.2rem;
            line-height: 1.6;
            color: #e0e0e0;
        }

        .button-container {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .portal-btn {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            width: 200px;
            height: 200px;
            background: rgba(30, 136, 229, 0.85);
            border-radius: 15px;
            text-decoration: none;
            color: white;
            transition: all 0.3s ease;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
            position: relative;
            overflow: hidden;
        }

        .portal-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(-100%);
            transition: transform 0.5s ease;
        }

        .portal-btn:hover::before {
            transform: translateX(0);
        }

        .portal-btn:hover {
            transform: translateY(-10px);
            background: rgba(30, 136, 229, 0.95);
            box-shadow: 0 15px 25px rgba(0, 0, 0, 0.4);
        }

        .portal-btn i {
            font-size: 4rem;
            margin-bottom: 15px;
        }

        .portal-btn span {
            font-size: 1.5rem;
            font-weight: 600;
        }

        footer {
            background-color: rgba(0, 0, 0, 0.8);
            padding: 25px 50px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-left {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-right {
            text-align: right;
        }

        footer a {
            color: #1e88e5;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        footer a:hover {
            color: #64b5f6;
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            header {
                padding: 15px 20px;
            }
            
            .logo-text {
                font-size: 1.4rem;
            }
            
            .welcome-text h1 {
                font-size: 2.5rem;
            }
            
            .button-container {
                gap: 20px;
            }
            
            .portal-btn {
                width: 150px;
                height: 150px;
            }
            
            .portal-btn i {
                font-size: 3rem;
            }
            
            footer {
                padding: 20px;
                flex-direction: column;
                text-align: center;
            }
            
            .footer-right {
                text-align: center;
            }
        }