body {
    background-color: #0f172a;
    color: #e2e8f0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: #1e293b;
    padding: 40px 0;
    text-align: center;
    border-bottom: 2px solid #38bdf8;
}

h1 {
    margin: 0;
    color: #38bdf8;
    font-size: 2.5rem;
}

.tagline {
    color: #94a3b8;
    font-size: 1.2rem;
    margin-top: 10px;
}

.card {
    background-color: #1e293b;
    padding: 25px;
    margin: 25px 0;
    border-radius: 8px;
    border: 1px solid #334155;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #38bdf8;
    margin-top: 0;
    border-bottom: 1px solid #334155;
    padding-bottom: 10px;
}

ul {
    padding-left: 20px;
}

li {
    margin-bottom: 12px;
    line-height: 1.6;
}

footer {
    text-align: center;
    padding: 30px;
    color: #64748b;
    font-size: 0.9rem;
}