body {
    font-family: 'Roboto Mono', monospace;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #0D1B2A, #162447);
    color: #F5EAEA;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: relative;
    height: 400px;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat, linear-gradient(135deg, #162447, #0D1B2A);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #C4900C;
    overflow: hidden;
}

header h1 {
    font-family: 'Bodoni', serif;
    font-size: 3rem;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
    z-index: 1;
}

header::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -20%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 70%);
    transform: rotate(45deg);
    animation: rotate-bg 20s infinite linear;
    z-index: 0;
}

@keyframes rotate-bg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

main {
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

section {
    margin-bottom: 60px;
}

h2 {
    font-family: 'Bodoni', serif;
    color: #C4900C;
    font-size: 2.2rem;
    margin-bottom: 20px;
    text-align: center;
}

p {
    font-size: 1rem;
    margin-bottom: 15px;
    text-align: justify;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

code {
    background-color: #1E293B;
    color: #FFD700;
    padding: 5px 10px;
    border-radius: 4px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    display: block;
    white-space: pre-wrap;
    overflow-wrap: break-word;
    margin: 10px 0;
}

pre {
    background-color: #1E293B;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}

button {
    background-color: #C4900C;
    color: #0D1B2A;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
    margin: 10px auto;
    display: block;
}

button:hover {
    transform: scale(1.1);
    background-color: #FFD700;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: #C4900C;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
}

.timeline-item {
    padding: 20px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #C4900C;
    border-radius: 50%;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    p {
        font-size: 0.9rem;
    }

    .timeline::after {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 60px;
        text-align: left;
    }

    .timeline-item:nth-child(odd) {
        left: 0;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline-item::after {
        left: 20px;
    }
}