:root {
    --cyan: #00aeef;
    --magenta: #ec008c;
    --yellow: #f6c000;
    --green: #8dc63f;
    --orange: #f7941d;
    --black: #111111;
    --text-dark: #2c3e50;
    --bg-light: #fafafa;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    border-bottom: 2px solid var(--black);
    padding: 15px 0;
    background: #fff;
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    max-height: 50px;
}

/* Botones */
.btn-primary {
    background-color: var(--black);
    color: #fff;
    padding: 10px 24px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    transition: 0.3s;
}
.btn-primary:hover { background-color: var(--cyan); }

.btn-secondary {
    display: inline-block;
    background-color: #fff;
    color: var(--black);
    border: 2px solid var(--black);
    padding: 10px 24px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    margin-top: 15px;
    transition: 0.3s;
}
.btn-secondary:hover { background-color: var(--black); color: #fff; }

/* Hero */
.hero {
    padding: 80px 0;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.hero-text h1 {
    font-size: 3rem;
    color: var(--black);
    margin-bottom: 5px;
    line-height: 1.1;
}
.slogan {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--magenta);
    font-weight: bold;
    margin-bottom: 20px;
}
.desc {
    font-size: 1.1rem;
    margin-bottom: 30px;
}
.zeti-img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Servicios */
.bg-light { background-color: var(--bg-light); padding: 60px 0; }
.services h2, .advantages h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--black);
    margin-bottom: 40px;
    text-transform: uppercase;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.card {
    background: #fff;
    padding: 25px;
    border-radius: 6px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-top: 4px solid var(--black);
}
.card-cyan { border-top-color: var(--cyan); }
.card-magenta { border-top-color: var(--magenta); }
.card-yellow { border-top-color: var(--yellow); }
.card-green { border-top-color: var(--green); }
.card h3 { color: var(--black); margin-top: 0; }

/* Ventajas */
.advantages { padding: 60px 20px; }
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.adv-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

/* Footer */
.footer {
    background-color: var(--black);
    color: #fff;
    text-align: center;
    padding: 50px 20px;
    border-top: 5px solid var(--orange);
}
.footer h2 { margin-top: 0; }
.copyright {
    font-size: 0.8rem;
    color: #888;
    margin-top: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
}