/* --- DESIGN SYSTEM & CSS VARIABLES --- */
        :root {
            --primary-dark: #1A252C; /* Deep Charcoal/Slate */
            --secondary-dark: #2C3E4A; /* Corporate Navy */
            --accent-gold: #C5A059; /* Safari Luxury Gold */
            --accent-gold-hover: #A3803B;
            --light-bg: #F8F9FA; /* Clean Light Grey */
            --white: #FFFFFF;
            --text-main: #333333;
            --text-muted: #666666;
            --font-serif: 'Playfair Display', Georgia, serif;
            --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            line-height: 1.6;
            background-color: var(--white);
        }

        h1, h2, h3 {
            font-family: var(--font-sans);
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.2;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-muted);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* --- BUTTONS --- */
        .btn {
            display: inline-block;
            padding: 0.8rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            border-radius: 4px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-gold {
            background-color: var(--accent-gold);
            color: var(--white);
        }

        .btn-gold:hover {
            background-color: var(--accent-gold-hover);
        }

        .btn-outline {
            border: 2px solid var(--white);
            color: var(--white);
            margin-left: 1rem;
        }

        .btn-outline:hover {
            background-color: var(--white);
            color: var(--primary-dark);
        }

        .btn-whatsapp {
            background-color: #25D366;
            color: var(--white);
            font-weight: bold;
        }
        
        .btn-whatsapp:hover {
            background-color: #128C7E;
        }

        /* --- HEADER & NAV --- */
        header {
            background-color: var(--primary-dark);
            padding: 1.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-family: var(--font-sans);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--white);
            letter-spacing: 1px;
        }

        .logo span {
            color: var(--accent-gold);
        }

        /* --- HERO SECTION --- */
        .hero {
            background: linear-gradient(rgba(26, 37, 44, 0.27), rgba(26, 37, 44, 0.9)), url('https://images.unsplash.com/photo-1516426122078-c23e76319801?auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            padding: 8rem 0;
            color: var(--white);
            text-align: center;
        }

        .hero h1 {
            color: var(--white);
            font-size: 3rem;
            margin-bottom: 1.5rem;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero p {
            color: #E0E6ED;
            font-size: 1.25rem;
            max-width: 750px;
            margin: 0 auto 2.5rem auto;
        }

        .hero-meta {
            margin-top: 2rem;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* --- CHALLENGE SECTION --- */
        .challenge {
            padding: 5rem 0;
            text-align: center;
            background-color: var(--white);
        }

        .section-title {
            font-size: 2.25rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 1rem;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: var(--accent-gold);
        }

        .challenge p {
            max-width: 800px;
            margin: 2rem auto 0 auto;
            font-size: 1.1rem;
            line-height: 1.8;
        }

        /* --- ADVANTAGE / ABOUT --- */
        .advantage {
            background-color: var(--light-bg);
            padding: 5rem 0;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .adv-card {
            background: var(--white);
            padding: 2.5rem;
            border-radius: 4px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            border-top: 4px solid var(--accent-gold);
        }

        .adv-card h3 {
            margin-bottom: 1rem;
            font-size: 1.4rem;
        }

        /* --- PRODUCTS SECTION --- */
        .products {
            padding: 5rem 0;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .product-card {
            background: var(--light-bg);
            border: 1px solid #EAEAEA;
            padding: 2.5rem 2rem;
            border-radius: 4px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            border-color: var(--accent-gold);
        }

        .product-tag {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .product-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .product-card p {
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }

        /* --- PROCESS SECTION --- */
        .process {
            background-color: var(--primary-dark);
            color: var(--white);
            padding: 5rem 0;
            text-align: center;
        }

        .process .section-title {
            color: var(--white);
        }

        .steps-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 3rem;
            margin-top: 4rem;
        }

        .step {
            position: relative;
        }

        .step-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: rgba(197, 160, 89, 0.3);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .step h3 {
            color: var(--white);
            margin-bottom: 0.75rem;
            font-size: 1.3rem;
        }

        .step p {
            color: #A0AEC0;
            font-size: 0.95rem;
        }

        /* --- FOOTER & CTA --- */
        footer {
            background-color: #11191F;
            color: var(--white);
            padding: 5rem 0 2rem 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 4rem;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            padding-bottom: 3rem;
            margin-bottom: 2rem;
        }

        .footer-brand h3 {
            color: var(--white);
            margin-bottom: 1rem;
        }

        .footer-office h4 {
            color: var(--accent-gold);
            margin-bottom: 1rem;
            font-size: 1.1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .footer-office p {
            color: #A0AEC0;
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .copyright {
            text-align: center;
            color: #718096;
            font-size: 0.85rem;
        }

        /* --- RESPONSIVE DESIGN --- */
        @media (max-width: 968px) {
            .grid-3, .grid-2, .steps-container, .footer-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .btn-outline {
                margin-left: 0;
                margin-top: 1rem;
                display: block;
            }
            .hero .btn {
                width: 100%;
                max-width: 300px;
            }
        }