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

body {
    font-family: sans-serif;
    background: #f5f5f5;
    padding: 20px;
    color: #003049;
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 30px;
}

.hero h1 {
    font-size: 28px;
    margin-bottom: 8px;
    color: #d62828;
}

.hero p {
    font-size: 14px;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Card */
.card {
    background: #fff;
    border: 1px solid #ccc;
    padding: 20px;
    border-radius: 6px;
    text-align: center;
}

.card h2 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #003049;
}

/* Button */
.btn {
    background: #003049;
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
}

.btn:hover {
    background: #d62828;
}

/* Hidden box */
.box {
    background: #eee;
    padding: 15px;
    border-radius: 4px;
    display: none;
}

.box p {
    margin-bottom: 8px;
}

/* Info */
.info {
    background: #e0e0e0;
    border-left: 3px solid #003049;
    padding: 10px;
    font-size: 12px;
}

.info strong {
    color: #d62828;
}

code {
    font-family: monospace;
    font-size: 12px;
}