:root {
    --primary: #003366;
    --background: #f5f7fa;
    --text: #333;
    --border: #ddd;
}


* {
    box-sizing: border-box;
}


body {
    margin: 0;
    font-family: "Inter", Arial, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
}


header {
    background: var(--primary);
    color: white;
    padding: 40px 20px;
    text-align: center;
}


header h1 {
    margin: 0;
    font-size: 2.2rem;
    font-weight: 700;
}


main {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}


.box {
    background: white;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 3px 10px rgba(0,0,0,.05);
}


.destaque {
    text-align: center;
    margin-bottom: 30px;
}


.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
}


h2, h3 {
    color: var(--primary);
}


footer {
    text-align: center;
    padding: 30px;
    color: #666;
}