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

.html {
    scroll-behavior: smooth;
}

.body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(
        45deg, 
        #734f1b, 
        #a67c00, 
        #d4af37, 
        #8c6910, 
        #734f1b
    );
    color: #e2e8f0;
    min-height: 100vh;
    line-height: 1.65;
}


.sobre-section {
    padding: 120px 20px 100px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
}

.sobre-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 70%, rgba(59, 130, 246, 0.10), transparent 65%);
    pointer-events: none;
}

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


.card {
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(96, 165, 250, 0.20);
    border-radius: 28px;
    padding: 2.8rem 2.4rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
    transition: all 0.35s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 60px rgba(59, 130, 246, 0.22);
    border-color: rgba(96, 165, 250, 0.45);
}


.card.principal,
.card.mision,
.card.vision {
    border-top-left-radius: 60px;
    border-top-right-radius: 60px;
}


.card h1, .card h2 {
    font-size: 2.6rem;
    font-weight: 800;
    text-align: center;
    background: linear-gradient(90deg, #93c5fd, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.4rem;
}

.card h2 {
    font-size: 2.3rem;
}


.card p {
    font-size: 1.18rem;
    color: #cbd5e1;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}


.btn-inicio {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    font-weight: 600;
    font-size: 1.15rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.40);
    border: 2px solid rgba(255, 255, 255, 0.18);
    transition: all 0.4s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(30px);
    z-index: 1000;
}

.btn-inicio.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.btn-inicio:hover {
    transform: translateY(-8px) scale(1.06);
    box-shadow: 0 20px 50px rgba(59, 130, 246, 0.55);
    border-color: rgba(255, 255, 255, 0.35);
}

@media (max-width: 768px) {
    .sobre-section { padding: 90px 16px 70px; }
    .card { padding: 2.2rem 1.8rem; }
    .card h1 { font-size: 2.2rem; }
    .card h2 { font-size: 2rem; }
    .btn-inicio {
        bottom: 24px;
        right: 24px;
        padding: 0.9rem 1.6rem;
        font-size: 1.05rem;
    }
}