:root {
            --bg-dark: #0f0b09;
            --card-bg: rgba(23, 17, 14, 0.88);
            --accent-gold: #d4a373;
            --text-light: #f8f9fa;
            --text-muted: #c4bbb0;
            --glass-border: rgba(212, 163, 115, 0.35);
        }

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

        body {
            font-family: 'Lato', sans-serif;
            background-color: var(--bg-dark);
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(212, 163, 115, 0.05) 0%, transparent 40%),
                linear-gradient(to bottom, rgba(15, 11, 9, 0.90), rgba(15, 11, 9, 0.98)),
                url('https://images.unsplash.com/photo-1447933601403-0c6688de566e?q=80&w=2000&auto=format&fit=crop');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: var(--text-light);
            line-height: 1.8;
        }

        h1, h2, h3 {
            font-family: 'Playfair Display', serif;
            color: var(--accent-gold);
        }

        
        .top-bar {
            background: rgba(18, 14, 12, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--glass-border);
            padding: 12px 24px;
            font-size: 0.88rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .top-bar a {
            color: var(--accent-gold);
            font-weight: 700;
            border: 1px solid var(--accent-gold);
            padding: 5px 14px;
            border-radius: 4px;
            text-transform: uppercase;
            font-size: 0.8rem;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .top-bar a:hover {
            background: var(--accent-gold);
            color: var(--bg-dark);
        }

        
        .hero-calidad {
            padding: 100px 20px 60px 20px;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-calidad h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .hero-calidad p.subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            font-style: italic;
        }

        
        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 20px 20px 80px 20px;
        }

        
        .glass-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-left: 5px solid var(--accent-gold);
            border-radius: 14px;
            padding: 45px 35px;
            margin-bottom: 50px;
            backdrop-filter: blur(12px);
            box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
        }

        .glass-card h2 {
            font-size: 2.2rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .tech-item {
            background: rgba(15, 11, 9, 0.6);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid rgba(212, 163, 115, 0.2);
        }

        .tech-item i {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 15px;
        }

        .tech-item h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: #fff;
        }

        .tech-item p {
            font-size: 0.95rem;
            color: #ccc;
        }

        
        footer.main-footer {
            background: rgba(9, 6, 5, 0.98);
            border-top: 2px solid var(--glass-border);
            padding: 60px 20px 30px 20px;
            text-align: center;
        }

        @media(max-width: 768px) {
            .hero-calidad h1 { font-size: 2.3rem; }
            .top-bar { flex-direction: column; gap: 10px; }
        }