body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1A1A1A, #000000);
    color: #FFFFFF;
    overflow-x: hidden;
}

header {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover;
    background-blend-mode: multiply;
    background-color: rgba(0, 116, 217, 0.8);
    text-align: center;
}

header h1 {
    font-size: 4rem;
    font-weight: bold;
    letter-spacing: 2px;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.5);
    animation: fadeIn 2s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.cta-button {
    display: inline-block;
    margin-top: 20px;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-weight: bold;
    color: #FFFFFF;
    background: linear-gradient(90deg, #0074D9, #39FF14);
    border-radius: 50px;
    box-shadow: 0 6px 12px rgba(0, 116, 217, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 16px rgba(0, 116, 217, 0.6);
}

main {
    padding: 40px 20px;
    line-height: 1.6;
}

main section {
    margin-bottom: 60px;
}

main h2, main h3 {
    color: #0074D9;
    margin-bottom: 20px;
}

main p {
    font-size: 1rem;
    margin-bottom: 15px;
}

main pre {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

main code {
    color: #39FF14;
    font-family: 'Courier New', monospace;
}

.icon-box {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.icon-box img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.icon-box img:hover {
    transform: scale(1.2);
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }

    .cta-button {
        padding: 10px 20px;
        font-size: 1rem;
    }

    main p {
        font-size: 0.9rem;
    }
}

footer {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #0074D9, #39FF14);
    color: #FFFFFF;
    font-size: 0.9rem;
}

@keyframes particleMove {
    0% { transform: translate(0, 0); }
    50% { transform: translate(50px, -30px); }
    100% { transform: translate(0, 0); }
}