/* --- VARIABLES GLOBALES --- */
        :root {
            --color-white: #ffffff;
            --color-bg: #f8fafc;
            --color-black: #0f172a;
            --color-black-80: #1e293b;
            --color-black-60: #475569;
            --color-black-10: #e2e8f0;
            --color-black-5: #f1f5f9;
            
            /* Identidad Crezo Premium */
            --color-accent-primary: #059669; 
            --color-accent-secondary: #10b981;
            --color-accent-light: #f0fdf4;
            --color-accent-dark: #065f46;
            
            --space-xxs: 8px;
            --space-xs: 12px;
            --space-s: 16px;
            --space-m: 20px;
            --space-l: 32px;
            --space-xl: 48px;
            
            --radius-m: 16px;
            --radius-l: 24px;
            
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* --- RESETEO --- */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Inter', sans-serif;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--color-bg);
        }

        body {
            color: var(--color-black);
            font-size: 16px;
            line-height: 1.5;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-m);
        }

        /* --- COMPONENTES --- */
        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
            color: var(--color-white);
            font-weight: 700;
            font-size: 16px;
            height: 56px;
            padding: 0 var(--space-l);
            border-radius: var(--radius-m);
            border: none;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
        }

        .button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(5, 150, 105, 0.4);
            filter: brightness(1.05);
        }

        .button:active {
            transform: translateY(0);
        }

        /* --- HEADER --- */
        .header {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(15, 23, 42, 0.05);
            height: 72px;
            position: sticky;
            top: 0;
            z-index: 999;
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header__logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-accent-primary);
            letter-spacing: -1px;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .header__logo span { color: var(--color-black); }

        .header__nav { display: none; }

        .header__nav-list {
            display: flex;
            gap: var(--space-l);
            list-style: none;
        }

        .header__nav-link {
            color: var(--color-black-60);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .header__nav-link:hover { color: var(--color-accent-primary); }

        .header__btn {
            background: var(--color-black-5);
            color: var(--color-black);
            padding: 10px var(--space-s);
            border-radius: 12px;
            font-size: 14px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .header__btn:hover { background: var(--color-black-10); }

        /* --- HERO SECCIÓN --- */
        .hero-section {
            padding: var(--space-xl) 0;
            background: radial-gradient(circle at 90% 10%, var(--color-accent-light) 0%, var(--color-bg) 60%);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-l);
            align-items: center;
        }

        .hero-text { text-align: center; }

        .hero-text__tag {
            display: inline-flex;
            background: var(--color-accent-light);
            color: var(--color-accent-dark);
            padding: 6px 12px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: var(--space-s);
            border: 1px solid rgba(5, 150, 105, 0.1);
        }

        .hero-text__title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-black);
            margin-bottom: var(--space-s);
            letter-spacing: -1px;
        }

        .hero-text__title mark {
            background: none;
            color: var(--color-accent-primary);
        }

        .hero-text__subtitle {
            font-size: 16px;
            color: var(--color-black-60);
            margin-bottom: var(--space-m);
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }

        /* --- CALCULADORA --- */
        .calculator-card {
            background: var(--color-white);
            border: 1px solid rgba(15, 23, 42, 0.06);
            border-radius: var(--radius-l);
            padding: var(--space-m);
            box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06);
        }

        .calc-group { margin-bottom: var(--space-m); }

        .calc-labels {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: var(--space-xs);
        }

        .calc-labels__title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-black-80);
        }

        .calc-labels__value {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-accent-primary);
        }

        /* Sliders Interactivos */
        .slider-container {
            position: relative;
            display: flex;
            align-items: center;
        }

        .range-slider {
            width: 100%;
            -webkit-appearance: none;
            appearance: none;
            height: 6px;
            border-radius: 100px;
            background: var(--color-black-10);
            outline: none;
        }

        .range-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-accent-primary);
            cursor: pointer;
            border: 4px solid var(--color-white);
            box-shadow: 0 4px 10px rgba(15, 23, 42, 0.2);
            transition: var(--transition);
        }

        .range-slider::-webkit-slider-thumb:hover {
            transform: scale(1.15);
            background: var(--color-accent-secondary);
        }

        /* Resumen */
        .calc-summary {
            background: var(--color-black-5);
            border-radius: var(--radius-m);
            padding: var(--space-m);
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
            margin-bottom: var(--space-m);
            border: 1px solid rgba(15, 23, 42, 0.04);
        }

        .summary-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .summary-item__label {
            font-size: 13px;
            color: var(--color-black-60);
            font-weight: 500;
        }

        .summary-item__value {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-black);
        }

        .summary-row.total {
            border-top: 1px dashed var(--color-black-10);
            padding-top: var(--space-xs);
            margin-top: 4px;
        }

        .summary-item__value--highlight {
            color: var(--color-accent-primary);
            font-size: 22px;
            font-weight: 800;
        }

        /* --- SECCIÓN DE TRANSPARENCIA / ENTIDADES --- */
        .partners-section {
            padding: var(--space-m) 0;
            background: var(--color-white);
            text-align: center;
            border-bottom: 1px solid var(--color-black-10);
        }
        .partners-title {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--color-black-60);
            margin-bottom: var(--space-s);
            font-weight: 600;
        }
        .partners-logos {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: var(--space-l);
            opacity: 0.7;
            flex-wrap: wrap;
            font-weight: 600;
            font-size: 14px;
            color: var(--color-black-60);
        }

        /* --- BENEFICIOS --- */
        .benefits-section {
            padding: var(--space-xl) 0;
            background: var(--color-white);
        }

        .section-title {
            text-align: center;
            font-size: 28px;
            font-weight: 800;
            color: var(--color-black);
            margin-bottom: var(--space-xl);
            letter-spacing: -0.5px;
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-m);
        }

        .benefit-card {
            background: var(--color-bg);
            border: 1px solid rgba(15, 23, 42, 0.04);
            border-radius: var(--radius-m);
            padding: var(--space-m);
            transition: var(--transition);
        }

        .benefit-card:hover {
            transform: translateY(-4px);
            background: var(--color-white);
            box-shadow: 0 12px 24px rgba(15, 23, 42, 0.04);
            border-color: rgba(5, 150, 105, 0.1);
        }

        .benefit-card__icon {
            width: 48px;
            height: 48px;
            background: var(--color-accent-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: var(--space-s);
        }

        .benefit-card__title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: var(--space-xxs);
            color: var(--color-black);
        }

        .benefit-card__text {
            font-size: 14px;
            color: var(--color-black-60);
        }

        /* --- LOADER OVERLAY INTERACTIVO --- */
        .loader-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            color: var(--color-white);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease-in-out;
            padding: var(--space-l);
            text-align: center;
        }

        .loader-overlay.show {
            opacity: 1;
            pointer-events: all;
        }

        .spinner {
            width: 64px;
            height: 64px;
            border: 5px solid rgba(255, 255, 255, 0.1);
            border-top-color: var(--color-accent-secondary);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            margin-bottom: var(--space-l);
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .loader-overlay__title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: var(--space-xxs);
        }

        .loader-overlay__subtitle {
            font-size: 15px;
            color: #94a3b8;
            max-width: 400px;
        }

        /* --- STICKY BOTÓN MÓVIL --- */
        .pinned-container {
            position: fixed;
            bottom: 0; left: 0; right: 0;
            padding: var(--space-s);
            background: linear-gradient(to top, rgba(255,255,255,1) 85%, rgba(255,255,255,0) 0%);
            box-shadow: 0 -10px 30px rgba(15, 23, 42, 0.08);
            z-index: 900;
        }

        /* --- FOOTER --- */
        .footer {
            background: var(--color-black);
            color: #94a3b8;
            padding: var(--space-xl) 0 calc(var(--space-xl) + 60px) 0;
            font-size: 12px;
            line-height: 1.7;
        }

        .footer__legal-text {
            margin-top: var(--space-s);
            color: #475569;
            border-top: 1px solid #1e293b;
            padding-top: var(--space-s);
        }

        /* --- RESPONSIVO --- */
        @media (min-width: 768px) {
            :root {
                --space-xl: 64px;
            }

            .header__nav { display: block; }

            .hero-grid {
                grid-template-columns: 1.1fr 0.9fr;
                gap: var(--space-xl);
            }

            .hero-text {
                text-align: left;
            }
            .hero-text__subtitle {
                margin-left: 0;
            }

            .calculator-card {
                padding: var(--space-l);
            }

            .benefits-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--space-l);
            }

            .pinned-container { display: none; }

            .footer { padding: var(--space-xl) 0; }
        }