body {
    margin: 0;
    font-family: 'Roboto Condensed', sans-serif;
    background: linear-gradient(135deg, #000046, #1cb5e0);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 70, 0.8);
    z-index: 1000;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header h1 {
    font-size: 24px;
    font-weight: bold;
    font-style: italic;
    margin: 0;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}
nav li {
    margin-left: 20px;
}
nav a {
    text-decoration: none;
    color: #7c4dff;
    font-size: 18px;
    transition: color 0.3s ease-in-out;
}
nav a:hover {
    color: #ff4081;
}
.hero-section {
    height: 100vh;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover,
                linear-gradient(135deg, #000046, #1cb5e0);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #ffffff;
    padding: 20px;
}
.hero-section h1 {
    font-size: 48px;
    font-weight: bold;
    font-style: italic;
    margin-bottom: 20px;
}
.hero-section p {
    font-size: 20px;
    max-width: 800px;
}
.section {
    padding: 60px 20px;
    background: linear-gradient(135deg, #0d0d0d, #2a2a2a);
    color: #ffffff;
    text-align: center;
}
.section:nth-child(even) {
    background: linear-gradient(135deg, #1a1a1a, #3a3a3a);
}
.section h2 {
    font-size: 36px;
    font-weight: bold;
    font-style: italic;
    margin-bottom: 20px;
}
.section p {
    font-size: 18px;
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto 20px;
}
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 40px 20px;
    background: linear-gradient(135deg, #000046, #1cb5e0);
}
.feature-item {
    background: rgba(0, 0, 0, 0.6);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s ease-in-out;
}
.feature-item:hover {
    transform: scale(1.05);
}
.feature-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 10px;
}
.feature-item h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}
.feature-item p {
    font-size: 16px;
    line-height: 1.4;
}
footer {
    background: linear-gradient(135deg, #000046, #1cb5e0);
    color: #ffffff;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}
@media (max-width: 768px) {
    header h1 {
        font-size: 20px;
    }
    nav li {
        margin-left: 10px;
    }
    .hero-section h1 {
        font-size: 36px;
    }
    .section h2 {
        font-size: 30px;
    }
    .section p {
        font-size: 16px;
    }
    .feature-item img {
        width: 80px;
        height: 80px;
    }
    .feature-item h3 {
        font-size: 18px;
    }
    .feature-item p {
        font-size: 14px;
    }
}
@media (max-width: 480px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    nav ul {
        flex-direction: column;
        align-items: flex-start;
    }
    nav li {
        margin-left: 0;
        margin-top: 10px;
    }
    .hero-section h1 {
        font-size: 28px;
    }
    .section h2 {
        font-size: 24px;
    }
    .features {
        grid-template-columns: 1fr;
    }
}