.container-15 {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

    .header h1 {
        font-size: 28px;
        color: #d63384;
        margin-bottom: 10px;
    }

    .header p {
        color: #666;
        font-size: 14px;
    }

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.rule-card {
    background: #fff;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    transition: 0.3s ease;
    border: 1px solid #f0f0f0;
}

    .rule-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 35px rgba(0,0,0,0.08);
    }

    .rule-card h2 {
        font-size: 18px;
        color: #6f42c1;
        margin-bottom: 15px;
    }

    .rule-card ul {
        padding: 0;
        margin: 0;
        list-style: none;
    }

        .rule-card ul li {
            margin-bottom: 10px;
            font-size: 14px;
            line-height: 1.8;
            position: relative;
            padding-right: 18px;
        }

            .rule-card ul li::before {
                content: "•";
                position: absolute;
                right: 0;
                color: #d63384;
                font-weight: bold;
            }

.footer-note {
    margin-top: 40px;
    text-align: center;
    font-size: 13px;
    color: #777;
}