body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0A1E3F;
    color: #fff;
}

/* HERO */
.principios-hero {
    height: 60vh;
    background: linear-gradient(135deg, #001B44, #003A8F);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.principios-hero .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.45);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 10px;
}

.hero-content p {
    font-size: 20px;
}

/* GRID */
.principios-section {
    padding: 80px 10%;
}

.principios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 35px;
}

/* CARD */
.principio-card {
    background: rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(12px);
    transition: 0.25s ease;
}

.principio-card:hover {
    transform: translateY(-8px);
    background: rgba(255,255,255,0.14);
}

.principio-card span {
    font-size: 34px;
    font-weight: 900;
    color: #ffcc00;
}

.principio-card h3 {
    margin-top: 10px;
    margin-bottom: 10px;
    font-size: 22px;
}

.principio-card p {
    font-size: 16px;
    line-height: 1.6;
}

/* FINAL */
.principios-final {
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #002B66, #00122E);
}

.principios-final h2 {
    font-size: 36px;
}