:root {
            --primary: #0052FF;
            --primary-dark: #0039B3;
            --primary-light: #4D94FF;
            --secondary: #0b2b3d;
            --bg: #f4f7f9;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --card-bg: #ffffff;
            --card-border: #e2e8f0;
            --accent: #00d4aa;
        }

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

        body {
            font-family: 'Montserrat', sans-serif;
            background-color: var(--bg);
            color: var(--text-dark);
            min-height: 100vh;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(0, 82, 255, 0.04) 0%, transparent 20%),
                radial-gradient(circle at 90% 80%, rgba(0, 212, 170, 0.04) 0%, transparent 20%);
        }

        /* ===== HEADER / HERO ===== */
        .header {
            width: 100%;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 60%, var(--primary) 100%);
            padding: 50px 20px 100px;
            text-align: center;
            color: #ffffff;
            border-bottom-left-radius: 50px;
            border-bottom-right-radius: 50px;
            box-shadow: 0 20px 60px rgba(0, 57, 179, 0.25);
            position: relative;
            margin-bottom: -60px;
            z-index: 1;
            overflow: hidden;
        }

        .header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.4;
            pointer-events: none;
        }

        .logo-main {
            max-width: 280px;
            width: 80%;
            margin-bottom: 25px;
            filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
            position: relative;
            z-index: 2;
        }

        .header h1 {
            font-weight: 900;
            font-size: 2.6rem;
            margin-bottom: 12px;
            letter-spacing: -1px;
            position: relative;
            z-index: 2;
            text-transform: uppercase;
        }

        .header p.subtitle {
            font-size: 1.1rem;
            opacity: 0.85;
            max-width: 600px;
            margin: 0 auto;
            font-weight: 500;
            position: relative;
            z-index: 2;
            line-height: 1.6;
        }

        /* ===== GRID 4 COLUMNAS ===== */
        .container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            max-width: 1400px;
            width: 100%;
            padding: 0 40px 80px;
            position: relative;
            z-index: 2;
            margin: 0 auto;
        }

        /* ===== CARDS ===== */
        .card {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 0;
            text-align: center;
            transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            border: 1px solid var(--card-border);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            text-decoration: none;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 25px 50px rgba(0, 82, 255, 0.15);
            border-color: transparent;
        }

        .card:hover::before {
            transform: scaleX(1);
        }

        /* Imagen / Logo arriba */
        .card-image {
            width: 100%;
            height: 280px;
            background: linear-gradient(135deg, #f0f4ff 0%, #e8eeff 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 30px;
            position: relative;
            overflow: hidden;
        }

        .card-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 40%;
            background: linear-gradient(to top, rgba(255,255,255,0.8), transparent);
        }

        .card-image img {
            max-width: 90%;
            max-height: 230px;
            object-fit: contain;
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            filter: drop-shadow(0 4px 8px rgba(0, 82, 255, 0.15));
            position: relative;
            z-index: 1;
        }

        .card:hover .card-image img {
            transform: scale(1.1) rotate(-3deg);
        }

        /* Badge */
        .badge {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: white;
            font-size: 0.65rem;
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 800;
            text-transform: uppercase;
            position: absolute;
            top: 15px;
            right: 15px;
            letter-spacing: 1px;
            z-index: 10;
            box-shadow: 0 4px 10px rgba(0, 82, 255, 0.3);
        }

        .badge.green {
            background: linear-gradient(135deg, #00d4aa, #00b894);
            box-shadow: 0 4px 10px rgba(0, 212, 170, 0.3);
        }

        .badge.orange {
            background: linear-gradient(135deg, #ff6b35, #f7931e);
            box-shadow: 0 4px 10px rgba(255, 107, 53, 0.3);
        }

        /* Contenido de texto */
        .card-body {
            padding: 25px 20px 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .card-title {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--secondary);
            line-height: 1.3;
            margin: 0;
        }

        .card-subtitle {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            font-weight: 500;
            margin: 0;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1200px) {
            .container {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
                padding: 0 30px 60px;
            }
        }

        @media (max-width: 900px) {
            .container {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                padding: 0 20px 50px;
            }

            .header h1 {
                font-size: 2rem;
            }

            .header p.subtitle {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 600px) {
            .container {
                grid-template-columns: 1fr;
                gap: 15px;
                padding: 0 15px 40px;
            }

            .header {
                padding: 40px 15px 80px;
                border-bottom-left-radius: 30px;
                border-bottom-right-radius: 30px;
            }

            .header h1 {
                font-size: 1.6rem;
            }

            .header p.subtitle {
                font-size: 0.85rem;
            }

            .card-image {
                height: 220px;
            }

            .card-title {
                font-size: 1rem;
            }

            .card-subtitle {
                font-size: 0.8rem;
            }
        }

        /* ===== FOOTER ===== */
        .footer {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 0.85rem;
            font-weight: 500;
        }

        .footer strong {
            color: var(--primary);
        }