:root {
            --primary-color: #5624d0;
            --secondary-color: #a435f0;
            --text-dark: #2d2f31;
            --text-light: #6a6f73;
            --bg-light: #f7f9fa;
            --card-bg: #ffffff;
            --border-color: #d1d7dc;
            --success-color: #1e8331;
            --warning-color: #ffc107;
            --info-color: #007791;
        }

        body {
            font-family: 'Poppins', sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: 800px;
            margin: 20px auto;
            padding: 20px;
            background-color: var(--card-bg);
            border-radius: 4px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
        }

        /* Tipografía responsiva */
        h1 { font-size: clamp(1.5rem, 5vw, 2.2rem); text-align: center; color: var(--primary-color); }
        h2 { font-size: clamp(1.2rem, 4vw, 1.8rem); border-bottom: 2px solid var(--secondary-color); padding-bottom: 8px; }
        h3 { font-size: 1.1rem; margin-top: 10px; }

        .button {
            display: block;
            width: fit-content;
            background-color: var(--primary-color);
            color: white !important;
            padding: 12px 24px;
            border-radius: 4px;
            font-weight: 700;
            margin: 15px auto;
            text-align: center;
            transition: 0.3s;
        }

        .button:hover { background-color: var(--secondary-color); text-decoration: none; }

        /* Contenedores de opciones flexible */
        .options-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }

        .option-card {
            background: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .advantages {
            list-style: none;
            padding: 0;
        }

        .advantages li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: flex-start;
            font-size: 0.95rem;
        }

        .advantages li::before {
            content: "✔";
            color: var(--success-color);
            margin-right: 12px;
            font-weight: bold;
        }

        .note {
            background-color: #fff9e6;
            border-left: 4px solid var(--warning-color);
            padding: 15px;
            font-size: 0.9rem;
            margin: 20px 0;
        }

        /* Ajustes específicos para 320px */
        @media (max-width: 360px) {
            .container { margin: 10px; padding: 15px; }
            .button { width: 100%; box-sizing: border-box; }
            .options-grid { grid-template-columns: 1fr; }
        }