:root {
    --azul-syscorp: #00AEEF;
    --gris-oscuro: #58595B;
    --blanco: #FFFFFF;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    color: var(--gris-oscuro);
}

header {
    background: var(--blanco);
    padding: 1rem 5%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 160px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: var(--gris-oscuro);
    font-weight: bold;
}

#hero {
    background: linear-gradient(135deg, var(--azul-syscorp), #007bb0);
    color: white;
    padding: 100px 5%;
    text-align: center;
}

.btn {
    display: inline-block;
    background: var(--blanco);
    color: var(--azul-syscorp);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    margin-top: 20px;
}

#servicios {
    padding: 50px 5%;
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    padding: 30px;
    border: 1px solid #eee;
    border-radius: 10px;
    transition: 0.3s;
}

.card:hover {
    border-color: var(--azul-syscorp);
    box-shadow: 0 5px 15px rgba(0,174,239,0.2);
}

footer {
    background: #f4f4f4;
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
}