.body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #111;
    color: #f2f2f2;
    line-height: 1.6;
}

.header {
    background: linear-gradient(135deg, #ff0000, #ff7b00);
    text-align: center;
    padding: 3rem 1rem;
}

.header h1 {
    font-size: 3rem;
    margin: 0;
}

.header p {
    font-size: 1.2rem;
}

.main {
    max-width: 900px;
    margin: auto;
    padding: 2rem 1rem;
}

.section {
    background: #1b1b1b;
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.h2 {
    color: #ff7b00;
    border-bottom: 2px solid #333;
    padding-bottom: 0.3rem;
}

.ul {
    padding-left: 1.2rem;
}

.rule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}

.card-rule {
    background: #262626;
    padding: 1rem;
    border-radius: 8px;
}

.card-rule h3 {
    margin-top: 0;
    color: #ff4444;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    background: #000;
    color: #777;
}