body {
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 1.25rem;
    background: linear-gradient(180deg, #f5f8fd 0%, #edf2f9 100%);
}

h1,
h2 {
    color: #1f2937;
}

h1 {
    margin-bottom: 1rem;
}

pre {
    background: #1f2937;
    color: #f8fafc;
    padding: 0.85rem;
    border-radius: 8px;
    border: 1px solid #334155;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem;
    background: #ffffff;
    border: 1px solid #d3deea;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

section {
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    body {
        padding: 0.75rem;
    }

    .container {
        padding: 1rem;
        border-radius: 10px;
    }

    h1 {
        font-size: 1.7rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    pre {
        font-size: 0.88rem;
    }
}