body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1E274A, #2C3E50);
    color: #8F9BB3;
    line-height: 1.6;
    overflow-x: hidden;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(30, 39, 74, 0.9);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}
header .logo {
    font-size: 24px;
    font-weight: bold;
    color: #FFD700;
    text-transform: uppercase;
}
header nav a {
    color: #8F9BB3;
    text-decoration: none;
    margin-left: 20px;
    font-size: 16px;
    transition: color 0.3s ease;
}
header nav a:hover {
    color: #FFD700;
}
.hero {
    height: 100vh;
    background: radial-gradient(circle, rgba(30, 39, 74, 0.8), transparent), url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #fff;
    text-align: center;
    padding: 20px;
}
.hero h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}
.hero p {
    font-size: 20px;
    max-width: 600px;
    margin-bottom: 30px;
}
.hero .cta-button {
    background-color: #FFD700;
    color: #1E274A;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, background-color 0.3s ease;
}
.hero .cta-button:hover {
    transform: scale(1.1);
    background-color: #FFB700;
}
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 60px 20px;
    background: linear-gradient(135deg, #2C3E50, #1E274A);
}
.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    text-align: center;
    color: #fff;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}
.feature-card img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 15px;
}
.case-study {
    padding: 40px 20px;
    background: linear-gradient(135deg, #1E274A, #2C3E50);
    color: #fff;
    text-align: center;
}
.case-study blockquote {
    font-size: 20px;
    font-style: italic;
    margin: 20px 0;
    position: relative;
}
.case-study blockquote::before {
    content: '“';
    font-size: 40px;
    position: absolute;
    left: -20px;
    top: -10px;
    color: #FFD700;
}
footer {
    background: #1E274A;
    color: #8F9BB3;
    text-align: center;
    padding: 20px;
    font-size: 14px;
}
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
    }
    header nav a {
        margin: 10px 0;
    }
    .hero h1 {
        font-size: 36px;
    }
    .hero p {
        font-size: 16px;
    }
}
@media (max-width: 480px) {
    .features {
        grid-template-columns: 1fr;
    }
}