* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    background: #f5f5f5;
    color: #222;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 30px 20px 60px;
}

.card {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

h1 {
    margin: 0 0 8px;
    color: #222;
    font-size: 30px;
    line-height: 1.3;
}

h2 {
    margin-top: 35px;
    margin-bottom: 12px;
    color: #222;
    font-size: 22px;
    line-height: 1.4;
}

p {
    margin: 12px 0;
}

ul {
    margin-top: 10px;
    padding-left: 25px;
}

li {
    margin-bottom: 8px;
}

.subtitle {
    color: #666;
    margin-top: 0;
    font-size: 17px;
}

.info {
    background: #f7f7f7;
    border-left: 4px solid #333;
    padding: 18px 20px;
    margin: 25px 0;
    border-radius: 4px;
}

.info p {
    margin: 5px 0;
}

.updated {
    color: #666;
    font-size: 14px;
    margin-top: 35px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

a {
    color: #0057b8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

strong {
    color: #111;
}

@media (max-width: 600px) {
    .container {
        padding: 15px 10px 40px;
    }

    .card {
        padding: 25px 20px;
        border-radius: 8px;
    }

    h1 {
        font-size: 25px;
    }

    h2 {
        font-size: 20px;
    }
}