:root {
    --primary-color: #0f172a;
    --secondary-color: #475569;
    --background-color: #f8fafc;
    --text-color: #1e293b;
    --accent-color: #2563eb;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.7;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    background-color: #ffffff;
}

header {
    margin-bottom: 2rem;
}

h1 {
    color: var(--primary-color);
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--accent-color);
    font-weight: 600;
}

.date {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-top: 0.5rem;
}

section {
    margin-bottom: 2rem;
}

h2 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 0.75rem;
}

ul {
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

ul li {
    margin-bottom: 0.4rem;
}

footer {
    border-top: 1px solid #e5e7eb;
    padding-top: 1rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--secondary-color);
}