:root {
            --salvia: #6B8E85;
            --arena: #EDEBE6;
            --blanco: #FAFAF7;
            --gris: #8B8B8B;
            --ink: #2F2F2F;
            --line: rgba(139, 139, 139, 0.25);
        }

        body {
            background-color: var(--arena);
            color: var(--ink);
            font-family: "Inter", system-ui, sans-serif;
        }

        
        /* Títulos */
        .page-header {
            text-align: center;
            margin-bottom: 3rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .page-title {
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 1rem;
            font-size: 2.5rem;
        }
        .page-intro {
            font-size: 1.1rem;
            color: #555;
            line-height: 1.7;
        }

        /* =========================================
           Navegación Tipo "Pills" (Diseño Nuevo)
           ========================================= */
        .nav-pills-custom {
            background-color: #fff;
            padding: 0.5rem;
            border-radius: 50px;
            display: inline-flex;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            border: 1px solid rgba(0,0,0,0.05);
            margin-bottom: 3rem;
            justify-content: center;
        }

        .nav-pills-custom .nav-link {
            color: var(--gris);
            font-weight: 700;
            padding: 0.6rem 2rem;
            border-radius: 50px;
            border: none;
            transition: all 0.2s ease;
            background: transparent;
        }

        .nav-pills-custom .nav-link:hover {
            color: var(--salvia);
            background-color: rgba(107, 142, 133, 0.05);
        }

        .nav-pills-custom .nav-link.active {
            background-color: var(--salvia);
            color: #fff;
            box-shadow: 0 4px 10px rgba(107, 142, 133, 0.3);
        }

        /* =========================================
           Panel de Contenido
           ========================================= */
        .tab-pane {
            animation: fadeIn 0.4s ease-out;
        }

        .academic-panel {
            background-color: #fff;
            border: 1px solid rgba(0,0,0,0.08);
            border-left: 6px solid var(--salvia);
            border-radius: 8px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
            margin-bottom: 2rem;
            /* Se elimina display:none porque Bootstrap maneja la visibilidad */
        }

        .academic-panel h2 {
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .academic-panel ul, .academic-panel ol {
            padding-left: 1.2rem;
            margin-bottom: 1.5rem;
        }

        .academic-panel li {
            margin-bottom: 0.8rem;
            line-height: 1.6;
            color: #444;
        }

        .academic-panel li::marker {
            color: var(--salvia);
            font-weight: bold;
        }

        /* =========================================
           Alertas y Notas
           ========================================= */
        .note-box {
            background-color: var(--arena);
            border-radius: 8px;
            padding: 24px;
            border: 1px solid rgba(0,0,0,0.05);
            font-size: 0.95rem;
            color: #444;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .note-box i {
            font-size: 1.5rem;
            color: var(--salvia);
        }

        /* Tarjetas internas para opciones presenciales */
        .option-card {
            background-color: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: 8px;
            padding: 20px;
            height: 100%;
            transition: transform 0.2s;
        }
        .option-card:hover {
            transform: translateY(-3px);
            border-color: var(--salvia);
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @media (max-width: 768px) {
            .nav-pills-custom { width: 100%; display: flex; flex-direction: column; border-radius: 12px; }
            .nav-pills-custom .nav-link { width: 100%; border-radius: 8px; text-align: center; margin-bottom: 5px; }
            .academic-panel { padding: 24px; }
        }