body, html {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #003366, #4B0082);
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}
nav .logo {
    font-size: 1.5em;
    font-weight: bold;
    color: #FFA500;
    text-transform: uppercase;
}
nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}
nav ul li a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}
nav ul li a:hover {
    color: #FFA500;
}
.hero-section {
    height: 100vh;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover,
                radial-gradient(circle, rgba(0, 51, 102, 0.8), rgba(75, 0, 130, 0.9));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    position: relative;
}
.hero-section h1 {
    font-size: 3em;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}
.hero-section p {
    font-size: 1.2em;
    max-width: 600px;
    margin-bottom: 30px;
}
.hero-section .cta-button {
    background-color: #FFA500;
    color: #fff;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.hero-section .cta-button:hover {
    background-color: #FF8C00;
}
.container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    padding: 20px;
    margin-top: 100px;
}
.feature-section {
    grid-column: span 4;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    color: #fff;
    transition: transform 0.3s ease;
}
.feature-section:hover {
    transform: translateY(-10px);
}
.feature-section img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    margin-bottom: 15px;
    border-radius: 50%;
}
.feature-section h3 {
    font-size: 1.2em;
    margin-bottom: 10px;
}
.feature-section p {
    font-size: 0.9em;
}
.case-study {
    grid-column: span 12;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    color: #fff;
}
.case-study h2 {
    font-size: 2em;
    margin-bottom: 20px;
}
.case-study .slider {
    display: flex;
    overflow-x: auto;
    gap: 20px;
    scroll-behavior: smooth;
}
.case-study .slider::-webkit-scrollbar {
    display: none;
}
.case-item {
    flex: 0 0 auto;
    width: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}
.case-item:hover {
    transform: scale(1.05);
}
.case-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    margin-bottom: 15px;
    border-radius: 50%;
}
footer {
    background: #003366;
    color: #fff;
    padding: 20px;
    text-align: center;
}
footer p {
    font-size: 0.9em;
}
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    .container {
        grid-template-columns: repeat(6, 1fr);
    }
    .feature-section {
        grid-column: span 6;
    }
    .hero-section h1 {
        font-size: 2em;
    }
    .hero-section p {
        font-size: 1em;
    }
}
@keyframes aurora-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 2s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}