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

body {
    background: radial-gradient(circle at top, #0a1a2f, #000814);
    font-family: Arial, Helvetica, sans-serif;
    color: #ffffff;
}

/* TOPO */
.topo {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #001f3f, #003566);
    border-bottom: 2px solid #00b4ff;
}

.topo h1 {
    font-size: 3em;
    color: #00d4ff;
}

.topo p {
    font-size: 1.2em;
    margin-top: 10px;
    color: #ccefff;
}

/* CARDS */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    padding: 60px;
}

.card {
    background: linear-gradient(145deg, #00152a, #00264d);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 0 25px rgba(0,180,255,0.2);
    transition: 0.4s;
    border: 1px solid rgba(0,180,255,0.2);
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 0 40px rgba(0,180,255,0.6);
}

.card h2 {
    color: #00d4ff;
    margin-bottom: 15px;
    font-size: 1.4em;
}

.card p {
    color: #e0f6ff;
    line-height: 1.6;
}

/* RODAPÉ */
.rodape {
    text-align: center;
    padding: 30px;
    background: #000814;
    border-top: 1px solid #00b4ff;
    margin-top: 40px;
}

.rodape a {
    color: #00d4ff;
    text-decoration: none;
}

.rodape a:hover {
    text-decoration: underline;
}