/* ==========================================================================
           3. DESIGN TOKENS (Paleta de Color Fija y Control de Foco)
           ========================================================================== */
        :root {
            /* Tonos Fijos de la Marca */
            --text-main: #41403c;
            --text-featured: #4f4749;

            --font-editorial: 1.25rem;
            
            /* Inercias de Sistemas Premium (Apple Springs) */
            --transition-apple: all 1.25s cubic-bezier(0.16, 1, 0.3, 1);
            --transition-menu: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
            --transition-snap: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
            --transition-spring: all 0.75s cubic-bezier(0.25, 1.15, 0.5, 1);
            
            --gutter: 40px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            color-scheme: light;
        }

        [hidden] {
            display: none !important;
        }

        .visually-hidden {
            position: absolute !important;
            width: 1px !important;
            height: 1px !important;
            padding: 0 !important;
            margin: -1px !important;
            overflow: hidden !important;
            clip: rect(0, 0, 0, 0) !important;
            white-space: nowrap !important;
            border: 0 !important;
        }

        body {
            background: linear-gradient(135deg, #f9f5f2 0%, #dad2ce 100%);
            color: var(--text-main);
            font-family: 'Switzer', -apple-system, BlinkMacSystemFont, sans-serif;
            height: 100dvh; 
            overflow: hidden; 
            -webkit-font-smoothing: antialiased;
        }

        /* Contenedor principal limitado estrictamente al ancho de la retícula */
        .app-container {
            position: relative;
            height: 100dvh; 
            max-height: 100dvh;
            width: 100%;
            max-width: 38rem; 
            margin: 0 auto;
            padding: var(--gutter) 24px; 
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        /* ==========================================================================
           4. HEADER (Alineación Quirúrgica con Salida Rápida)
           ========================================================================== */
        .main-header {
            width: 100%;
            flex-shrink: 0;
            opacity: 0;
            pointer-events: none; 
            transform: translateY(-8px);
            z-index: 100;
            
            /* Salida rápida (Fast Exit) al volver a la pantalla de bienvenida */
            will-change: transform, opacity;
            transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
        }

        [data-state="narrative"] .main-header,
        [data-state="contact"] .main-header,
        [data-state="operations"] .main-header {
            opacity: 0.47;
            pointer-events: auto; 
            transform: translateY(0);
            
            /* Entrada elegante en pantallas secundarias */
            transition: opacity 0.4s cubic-bezier(0.25, 1, 0.5, 1), 
                        transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        }

        /* El hover solo se activa si estamos en una pantalla con la cabecera visible */
        body[data-state="narrative"] .main-header:hover,
        body[data-state="contact"] .main-header:hover,
        body[data-state="operations"] .main-header:hover,
        body[data-state="narrative"] .main-header:has(:focus-visible),
        body[data-state="contact"] .main-header:has(:focus-visible),
        body[data-state="operations"] .main-header:has(:focus-visible) {
            opacity: 1 !important;
        }

        .brand-group {
            display: flex;
            flex-direction: column;
            gap: 6px; 
            align-items: flex-start;
        }

        .brand-title {
            appearance: none;
            background: none;
            border: 0;
            font-family: inherit;
            font-size: 1.1rem;
            letter-spacing: -0.01em;
            font-weight: 700;
            color: var(--text-main);
            text-decoration: none;
            cursor: pointer;
            transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .brand-title:hover {
            opacity: 0.6;
        }

        :where(button, a, input):focus-visible {
            outline: 2px solid var(--text-main);
            outline-offset: 4px;
            border-radius: 2px;
        }

        .tag-line {
            font-size: 12px; 
            line-height: 20px; 
            letter-spacing: 0.8px; 
            text-transform: uppercase;
            color: var(--text-featured);
            font-weight: 500;
        }

        /* ==========================================================================
           5. VISOR CENTRAL (Unificación Total de Vistas Planas)
           ========================================================================== */
        .content-viewport {
            flex-grow: 1; 
            flex-shrink: 1;
            min-height: 0; 
            width: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center; 
            align-items: center;
            position: relative;
        }

        body[data-state="contact"] .content-viewport,
        body[data-state="operations"] .content-viewport {
            justify-content: flex-start;
            padding-top: 4vh;
        }

        .view-welcome,
        .view-narrative,
        .view-contact,
        .view-operations {
            position: absolute;
            width: 100%;
            left: 0;
            will-change: transform, opacity;
        }

        /* La pantalla base de bienvenida responde al desvanecimiento vertical unificado */
        .view-welcome {
            height: auto;
            top: 50%;
            transform: translateY(-50%) scale(1);
            opacity: 1;
            pointer-events: auto;
            transition: opacity 1.25s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 1.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* UNIFICACIÓN: En todos los estados secundarios, la bienvenida se disuelve y encoge igual */
        body[data-state="narrative"] .view-welcome,
        body[data-state="contact"] .view-welcome,
        body[data-state="operations"] .view-welcome {
            opacity: 0;
            transform: translateY(-50%) scale(0.95);
            pointer-events: none;
        }

        /* COREOGRAFÍA DE NODOS ASÍNCRONOS */
        .axis-box {
            position: absolute;
            width: max-content; 
            height: auto;
            display: flex;
            align-items: center;
            transition: var(--transition-apple);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .text-node {
            font-size: var(--font-editorial);
            line-height: 1.5;
            letter-spacing: -0.02em;
            font-weight: 800;
            color: var(--text-main);
            transition: opacity 0.25s ease, filter 0.25s ease;
        }

        #box-name { opacity: 1; filter: blur(0); }
        #box-welcome { opacity: 0; filter: blur(15px); }

        body[data-state="welcome-center"] #box-name { opacity: 0; filter: blur(15px); visibility: hidden; }
        body[data-state="welcome-center"] #box-welcome { opacity: 1; filter: blur(0); }

        body[data-state="welcome-left"] #box-name { opacity: 0; visibility: hidden; }
        body[data-state="welcome-left"] #box-welcome {
            left: 0; top: 50%;
            transform: translate(0, -50%);
            opacity: 1; filter: blur(0);
        }

        body[data-state="welcome-ready"] #box-name,
        body[data-state="narrative"] #box-name,
        body[data-state="contact"] #box-name,
        body[data-state="operations"] #box-name { opacity: 0; visibility: hidden; }
        
        body[data-state="welcome-ready"] #box-welcome,
        body[data-state="narrative"] #box-welcome,
        body[data-state="contact"] #box-welcome,
        body[data-state="operations"] #box-welcome {
            top: 0; left: 0;
            transform: translate(0, 0);
            opacity: 1; filter: blur(0);
        }

        .welcome-fade-block {
            width: 100%;
            position: relative;
            padding-top: 36px;
            left: 0;
            opacity: 0;
            filter: blur(8px);
            transform: translateY(10px);
            transition: var(--transition-apple);
            pointer-events: none;
        }

        body[data-state="welcome-ready"] .welcome-fade-block {
            opacity: 1;
            filter: blur(0);
            transform: translateY(0);
            pointer-events: auto;
            transition-delay: 0.35s; 
        }

        /* Marca focal: un único testigo visual para estado y progreso. Vive en
           el margen, no participa en el layout y nunca captura interacción. */
        .focus-companion {
            --focus-progress: 0.5;
            --focus-offset: 52px;
            position: absolute;
            top: 50%;
            right: 0;
            width: 28px;
            height: 136px;
            z-index: 90;
            color: var(--text-featured);
            opacity: 0;
            pointer-events: none;
            transform: translateY(-50%) scale(0.96);
            transform-origin: center;
            transition: opacity 0.38s ease,
                        transform 0.42s cubic-bezier(0.16, 1, 0.3, 1);
        }

        body[data-state="welcome-ready"] .focus-companion:not([data-mode="hidden"]),
        body[data-state="narrative"] .focus-companion:not([data-mode="hidden"]),
        body[data-state="contact"] .focus-companion:not([data-mode="hidden"]),
        body[data-state="operations"] .focus-companion:not([data-mode="hidden"]) {
            opacity: 0.58;
            transform: translateY(-50%) scale(1);
        }

        body[data-state="welcome-ready"] .focus-companion:not([data-mode="hidden"]) { opacity: 0.56; }
        body[data-state="contact"] .focus-companion:not([data-mode="hidden"]) { opacity: 0.64; }
        .focus-companion.is-updating { opacity: 0.9 !important; }

        .focus-rail {
            position: absolute;
            top: 16px;
            bottom: 16px;
            left: 50%;
            width: 1px;
            background: currentColor;
            opacity: 0.34;
            transform: translateX(-50%);
            transition: opacity 0.25s ease;
        }

        .focus-rail-fill {
            position: absolute;
            inset: 0;
            background: currentColor;
            opacity: 0.95;
            transform: scaleY(var(--focus-progress));
            transform-origin: top center;
            transition: transform 0.36s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .focus-ticks {
            position: absolute;
            top: 16px;
            bottom: 16px;
            left: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            opacity: 0;
            transform: translateX(-50%);
            transition: opacity 0.25s ease;
        }

        .focus-tick {
            display: block;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: currentColor;
            opacity: 0.42;
            transform: scale(0.78);
            transition: opacity 0.25s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .focus-tick.is-passed { opacity: 0.68; }
        .focus-tick.is-current { opacity: 1; transform: scale(1.3); }

        .focus-mark {
            position: absolute;
            top: 16px;
            left: 50%;
            width: 28px;
            height: 28px;
            overflow: visible;
            transform: translate(-50%, -50%) translateY(var(--focus-offset));
            transition: transform 0.36s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .focus-bracket {
            fill: none;
            stroke: currentColor;
            stroke-width: 1.35;
            stroke-linecap: square;
            stroke-linejoin: miter;
            vector-effect: non-scaling-stroke;
            transform-box: fill-box;
            transform-origin: center;
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .focus-bracket-left { transform: translateX(-1.2px); }
        .focus-bracket-right { transform: translateX(1.2px); }

        .focus-core {
            fill: currentColor;
            transform-box: fill-box;
            transform-origin: center;
            transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
        }

        .focus-companion[data-mode="welcome"] .focus-ticks,
        .focus-companion[data-mode="complete"] .focus-rail,
        .focus-companion[data-mode="complete"] .focus-ticks {
            opacity: 0;
        }

        .focus-companion[data-mode="welcome"] .focus-rail { opacity: 0.24; }
        .focus-companion[data-mode="welcome"] .focus-rail-fill { opacity: 0; }

        .focus-companion[data-mode="operations"] .focus-ticks,
        .focus-companion[data-mode="contact"] .focus-ticks {
            opacity: 1;
        }

        .focus-companion[data-mode="operations"] .focus-rail { opacity: 0.2; }
        .focus-companion[data-mode="operations-scroll"] .focus-rail { opacity: 0.3; }
        .focus-companion[data-mode="operations"][data-active="false"] .focus-rail-fill { opacity: 0; }
        .focus-companion[data-mode="operations"][data-active="false"] .focus-mark { opacity: 0.74; }

        .focus-companion.is-updating .focus-bracket-left,
        body[data-state="welcome-ready"]:has(.btn-inline-option:hover, .btn-inline-option:focus-visible) .focus-bracket-left {
            transform: translateX(-0.25px);
        }

        .focus-companion.is-updating .focus-bracket-right,
        body[data-state="welcome-ready"]:has(.btn-inline-option:hover, .btn-inline-option:focus-visible) .focus-bracket-right {
            transform: translateX(0.25px);
        }

        .focus-companion.is-updating .focus-core,
        body[data-state="welcome-ready"]:has(.btn-inline-option:hover, .btn-inline-option:focus-visible) .focus-core {
            transform: scale(1.38);
        }

        .focus-companion[data-mode="complete"] .focus-bracket-left,
        .focus-companion[data-mode="complete"] .focus-bracket-right {
            transform: translateX(0);
        }

        .focus-companion[data-mode="complete"] .focus-core { transform: scale(1.55); }

        .interactive-prose {
            font-size: var(--font-editorial);
            line-height: 1.6;
            color: var(--text-main);
            opacity: 0.95; 
            letter-spacing: -0.01em;
            transition: opacity 0.25s ease, filter 0.25s ease;
        }

        .btn-inline-option {
            background: none;
            border: none;
            font-family: inherit;
            font-size: inherit;
            font-weight: 700;
            color: var(--text-featured);
            cursor: pointer;
            display: inline;
            padding: 0 1px;
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: color 0.3s ease;
        }

        .btn-inline-option:hover { color: var(--text-main); }

        /* Estilo de despliegue unificado para vistas secundarias */
        .view-contact {
            top: 0;
            padding-top: 36px;
            opacity: 0;
            transform: scale(0.96) translateY(12px);
            pointer-events: none;
            transition: opacity 1.25s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 1.25s cubic-bezier(0.16, 1, 0.3, 1); 
            height: 100%;
            max-height: 70vh;
            overflow-y: auto;
            overscroll-behavior: contain;
            scrollbar-width: none;
            padding-bottom: 36px;
            -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 7%, #000 93%, transparent 100%);
            mask-image: linear-gradient(to bottom, transparent 0%, #000 7%, #000 93%, transparent 100%);
        }

        .view-contact::-webkit-scrollbar { display: none; }

        body[data-state="contact"] .view-contact {
            opacity: 1;
            transform: scale(1) translateY(0);
            pointer-events: auto;
        }

        /* UNIFICACIÓN ABSOLUTA: Operaciones ahora entra verticalmente, igual que Contacto */
        .view-operations {
            top: 0;
            padding-top: 36px;
            opacity: 0;
            transform: scale(0.96) translateY(12px);
            pointer-events: none;
            transition: opacity 1.25s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 1.25s cubic-bezier(0.16, 1, 0.3, 1);
            height: 100%;
            max-height: 70vh;
            overflow-y: auto;
            overscroll-behavior: contain;
            scrollbar-width: none;
            padding-bottom: 36px;
            -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 7%, #000 93%, transparent 100%);
            mask-image: linear-gradient(to bottom, transparent 0%, #000 7%, #000 93%, transparent 100%);
        }
        .view-operations::-webkit-scrollbar { display: none; }

        body[data-state="operations"] .view-operations {
            opacity: 1;
            transform: scale(1) translateY(0);
            pointer-events: auto;
        }

        /* Espaciado del Manifiesto de Operaciones */
        #operations-intro {
            margin-bottom: 28px;
        }

        /* ==========================================================================
           6. ARCHIVADOR FOCAL (Índice + superficie editorial en el mismo escenario)
           ========================================================================== */
        .cabinet-system {
            width: 100%;
            padding-bottom: 12px;
        }

        .operations-file-list {
            list-style: none;
            border-bottom: 1px solid rgba(65, 64, 60, 0.15);
        }

        .operation-file-row {
            border-top: 1px solid rgba(65, 64, 60, 0.15);
        }

        .operation-file-link {
            color: inherit;
            text-decoration: none;
            width: 100%;
            display: grid;
            grid-template-columns: 34px minmax(0, 1fr) auto;
            gap: 10px;
            align-items: start;
            padding: 18px 0 19px;
            transition: opacity 0.3s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .operation-file-link:hover {
            transform: translateX(3px);
        }

        .operation-file-link[aria-current="page"] {
            opacity: 1;
        }

        .operation-file-num {
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.1em;
            color: var(--text-featured);
            opacity: 0.55;
            padding-top: 3px;
        }

        .operation-file-copy {
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .operation-file-copy strong {
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-main);
        }

        .operation-file-copy > span {
            font-size: 15px;
            line-height: 1.5;
            letter-spacing: -0.005em;
            color: var(--text-main);
            opacity: 0.72;
        }

        .operation-file-status {
            font-size: 10px;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-featured);
            opacity: 0.48;
            padding-top: 3px;
            transition: opacity 0.3s ease;
        }

        .operation-file-link:hover .operation-file-status {
            opacity: 0.85;
        }

        .operations-reading {
            width: 100%;
        }

        .operation-article {
            width: 100%;
            max-width: 72ch;
            margin: 0 auto;
            padding-bottom: 32px;
            color: var(--text-main);
        }

        .operation-article:focus {
            outline: none;
        }

        .operation-article h3:focus-visible {
            outline: 2px solid var(--text-main);
            outline-offset: 5px;
            border-radius: 2px;
        }

        .operation-article-header {
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(65, 64, 60, 0.15);
        }

        .operation-kicker {
            display: flex;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 11px;
            line-height: 1.4;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--text-featured);
            opacity: 0.58;
        }

        .operation-article h3 {
            max-width: 22ch;
            font-size: 1.75rem;
            line-height: 1.12;
            letter-spacing: -0.035em;
            font-weight: 700;
        }

        .operation-section {
            margin-top: 28px;
        }

        .operation-section h4,
        .operation-section h5 {
            font-size: 11px;
            line-height: 1.4;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-featured);
        }

        .operation-thesis p {
            margin-top: 10px;
            font-size: 1.16rem;
            line-height: 1.55;
            letter-spacing: -0.015em;
            font-weight: 500;
        }

        .operation-explanation,
        .operation-limit p,
        .evidence-scenario p,
        .evidence-step-copy span,
        .evidence-reframe p,
        .evidence-claims li {
            font-size: 17px;
            line-height: 1.6;
            letter-spacing: -0.008em;
        }

        .operation-explanation {
            margin-top: 24px;
            opacity: 0.9;
        }

        .operation-section-heading {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 20px;
            padding-bottom: 10px;
        }

        .operation-section-heading > p {
            font-size: 12px;
            line-height: 1.4;
            text-align: right;
            color: var(--text-featured);
            opacity: 0.62;
        }

        .evidence-reframe,
        .evidence-scenarios,
        .evidence-sequence,
        .evidence-boundary {
            border-top: 1px solid rgba(65, 64, 60, 0.18);
            border-bottom: 1px solid rgba(65, 64, 60, 0.18);
        }

        .evidence-reframe-row {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 22px minmax(0, 1fr);
            gap: 10px;
            padding: 16px 0;
            align-items: start;
        }

        .evidence-reframe-row + .evidence-reframe-row,
        .evidence-step + .evidence-step,
        .evidence-scenario + .evidence-scenario {
            border-top: 1px solid rgba(65, 64, 60, 0.12);
        }

        .evidence-arrow {
            text-align: center;
            opacity: 0.42;
            padding-top: 3px;
        }

        .evidence-sequence {
            list-style: none;
        }

        .evidence-step {
            display: grid;
            grid-template-columns: 34px minmax(0, 1fr);
            gap: 10px;
            padding: 15px 0 16px;
        }

        .evidence-step-num {
            font-size: 10px;
            line-height: 1.6;
            font-weight: 700;
            letter-spacing: 0.1em;
            opacity: 0.48;
        }

        .evidence-step-copy {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .evidence-step-copy strong {
            font-size: 13px;
            line-height: 1.45;
            text-transform: uppercase;
            letter-spacing: 0.055em;
        }

        .evidence-step-copy span {
            opacity: 0.82;
        }

        .evidence-scenario {
            padding: 16px 0;
        }

        .evidence-scenario.is-selected {
            padding-left: 14px;
            padding-right: 14px;
            background: rgba(79, 71, 73, 0.055);
        }

        .evidence-scenario-heading {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 7px;
        }

        .evidence-scenario-heading span {
            font-size: 9px;
            line-height: 1.4;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            opacity: 0.58;
        }

        .evidence-boundary {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }

        .evidence-claims {
            padding: 16px 14px 18px 0;
        }

        .evidence-claims + .evidence-claims {
            border-left: 1px solid rgba(65, 64, 60, 0.15);
            padding-left: 18px;
            padding-right: 0;
        }

        .evidence-claims ul {
            margin-top: 10px;
            padding-left: 18px;
        }

        .evidence-claims li + li {
            margin-top: 8px;
        }

        .operation-limit {
            padding: 18px 20px 20px;
            border: 1px solid rgba(65, 64, 60, 0.18);
            background: rgba(79, 71, 73, 0.035);
        }

        .operation-limit p {
            margin-top: 8px;
            opacity: 0.82;
        }

        /* ==========================================================================
           7. TELEPROMPTER NARRATIVO
           ========================================================================== */
        .view-narrative {
            top: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transform: translateY(16px); 
            pointer-events: none;
            transition: opacity 1.25s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 1.25s cubic-bezier(0.16, 1, 0.3, 1); 
            
            overflow-y: scroll;
            scrollbar-width: none;
            scroll-snap-type: y proximity;
            overscroll-behavior-y: contain;
            
            padding-top: 35vh; 
            padding-bottom: 35vh;
            
            -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #fff 15%, #fff 85%, transparent 100%);
            mask-image: linear-gradient(to bottom, transparent 0%, #fff 15%, #fff 85%, transparent 100%);
        }

        body[data-state="narrative"] .view-narrative {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .view-narrative::-webkit-scrollbar { display: none; }

        .scrolling-p, .image-box {
            font-size: var(--font-editorial);
            line-height: 1.55;
            padding: 24px 0; 
            margin: 0; 
            scroll-snap-align: center;
            scroll-snap-stop: normal;
            opacity: 0.015;
            filter: blur(1.55px);
            transition: opacity 0.28s cubic-bezier(0.25, 1, 0.5, 1),
                        filter 0.28s cubic-bezier(0.25, 1, 0.5, 1);
            color: var(--text-main);
            letter-spacing: -0.01em;
        }

        .scrolling-p.is-reading, .image-box.is-reading {
            opacity: 1;
            filter: blur(0);
        }

        /* Avance del siguiente bloque: deja entrever su arranque en el borde
           inferior sin hacer legible todo el contenido periférico. */
        .scrolling-p.is-reading + .scrolling-p:not(.is-reading),
        .scrolling-p.is-reading + .image-box:not(.is-reading),
        .image-box.is-reading + .scrolling-p:not(.is-reading),
        .image-box.is-reading + .image-box:not(.is-reading) {
            opacity: 0.23;
            filter: blur(0.85px);
        }

        .contact-form {
            width: 100%;
            min-height: 100%;
            padding: 42px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            --form-editorial-size: clamp(1.16rem, 4.9vw, 1.38rem);
            --form-answer-size: clamp(1.08rem, 4.5vw, 1.28rem);
        }

        .form-step {
            width: 100%;
        }

        .form-group {
            min-width: 0;
            border: 0;
        }

        .form-group-legend,
        .form-field-label {
            display: block;
            font-size: var(--form-editorial-size);
            line-height: 1.42;
            letter-spacing: -0.018em;
            font-weight: 400;
            color: var(--text-main);
        }

        .form-field-label small {
            font-size: 11px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            opacity: 0.48;
        }

        .form-intent-group {
            margin-bottom: 0;
        }

        .form-choice-row {
            display: flex;
            align-items: baseline;
            flex-wrap: wrap;
            gap: 0;
            margin-top: 2px;
        }

        .form-choice-btn {
            font-size: var(--form-editorial-size);
            line-height: 1.42;
            letter-spacing: -0.018em;
            font-weight: 400;
            color: var(--text-main);
            opacity: 0.24;
            cursor: pointer;
            padding: 1px 0;
            transition: opacity 0.3s ease, color 0.3s ease, text-decoration-color 0.3s ease;
        }

        .form-choice-input:checked + .form-choice-btn {
            opacity: 1;
            font-weight: 800;
        }

        .form-choice-input:focus-visible + .form-choice-btn,
        .form-option-input:focus-visible + .form-option-label {
            outline: 2px solid var(--text-main);
            outline-offset: 3px;
            border-radius: 2px;
        }

        .form-slash {
            font-size: var(--form-editorial-size);
            line-height: 1.42;
            opacity: 0.18;
            padding: 0 8px;
        }

        .form-conditional-fields {
            display: contents;
        }

        .form-panel-enter {
            animation: inkMaterialize 0.42s cubic-bezier(0.25, 1, 0.5, 1) both;
        }

        .form-field {
            display: block;
            min-width: 0;
        }

        .form-field-hint {
            display: block;
            max-width: 34rem;
            margin-top: 9px;
            color: var(--text-featured);
            font-size: clamp(0.94rem, 4vw, 1.06rem);
            line-height: 1.48;
            letter-spacing: -0.006em;
            font-weight: 400;
            opacity: 0.48;
            transition: opacity 0.25s ease;
        }

        .form-field:focus-within .form-field-hint {
            opacity: 0.68;
        }

        .form-field textarea,
        .form-field input[type="text"],
        .form-field input[type="email"],
        .form-field input[type="date"] {
            display: block;
            width: 100%;
            min-height: 37px;
            margin-top: 1px;
            padding: 3px 0 6px;
            border: 0;
            border-bottom: 1px dashed rgba(65, 64, 60, 0.3);
            border-radius: 0;
            outline: 0;
            background: transparent;
            color: var(--text-main);
            font-family: inherit;
            font-size: var(--form-answer-size);
            line-height: 1.42;
            letter-spacing: -0.012em;
            font-weight: 500;
            resize: none;
            overflow-y: hidden;
            transition: border-color 0.25s ease, opacity 0.25s ease;
        }

        .form-field textarea {
            min-height: 46px;
            margin-top: 8px;
            scrollbar-width: none;
        }

        .form-field textarea::-webkit-scrollbar {
            display: none;
        }

        .form-field input[type="date"] {
            width: auto;
            min-width: 180px;
            color-scheme: light;
        }

        .form-field textarea::placeholder,
        .form-field input::placeholder {
            color: var(--text-featured);
            opacity: 0.3;
            font-weight: 400;
        }

        .form-field textarea:focus,
        .form-field input:focus {
            border-bottom-style: solid;
            border-bottom-color: var(--text-main);
        }

        .form-urgency-group {
            margin-top: 4px;
        }

        .form-radio-stack {
            display: flex;
            align-items: baseline;
            flex-wrap: wrap;
            gap: 0;
            margin-top: 3px;
        }

        .form-option-label {
            position: relative;
            padding: 1px 0;
            font-size: var(--form-answer-size);
            line-height: 1.42;
            letter-spacing: -0.012em;
            cursor: pointer;
            opacity: 0.26;
            transition: opacity 0.25s ease, text-decoration-color 0.25s ease;
        }

        .form-option-divider {
            font-size: var(--form-answer-size);
            line-height: 1.42;
            margin: 0 9px;
            opacity: 0.15;
            font-weight: 400;
        }

        .form-option-input:checked + .form-option-label {
            opacity: 1;
            font-weight: 800;
        }

        .form-date-field {
            margin-top: 20px;
        }

        .form-common-fields {
            display: block;
            margin-top: 0;
            font-size: var(--form-editorial-size);
            line-height: 1.75;
            letter-spacing: -0.018em;
        }

        .form-common-fields .form-field {
            display: inline;
        }

        .form-common-fields .form-field-label {
            display: inline;
        }

        .form-common-fields .form-field input[type="text"],
        .form-common-fields .form-field input[type="email"] {
            display: inline-block;
            width: 148px;
            min-height: 0;
            margin: 0 4px;
            padding: 0 3px 2px;
            font-size: inherit;
            line-height: inherit;
            vertical-align: baseline;
        }

        .form-common-fields .form-field input[type="email"] {
            width: min(230px, 82vw);
        }

        .form-promise {
            margin-top: 42px;
            font-size: 15px;
            line-height: 1.6;
            opacity: 0.62;
        }

        .form-privacy {
            margin-top: 16px;
            font-size: 10px;
            line-height: 1.6;
            opacity: 0.46;
        }

        .form-privacy a,
        .legal-scroll a {
            color: inherit;
            text-underline-offset: 3px;
        }

        .form-status {
            display: block;
            min-height: 1.5em;
            margin-top: 18px;
            font-size: 0.875rem;
            line-height: 1.5;
            font-weight: 500;
        }

        .form-status[data-kind="error"] { color: #702b31; }
        .form-status[data-kind="success"] { color: #2f5841; }

        .input-error {
            animation: shake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
            border-bottom-color: #4f4749 !important;
            border-bottom-style: solid;
        }

        .form-option-input.input-error + .form-option-label,
        .form-choice-input.input-error + .form-choice-btn {
            opacity: 1;
            text-decoration: underline;
            text-decoration-style: wavy;
            text-underline-offset: 4px;
        }
        @keyframes shake {
            10%, 90% { transform: translate3d(-1px, 0, 0); }
            20%, 80% { transform: translate3d(2px, 0, 0); }
            30%, 50%, 70% { transform: translate3d(-3px, 0, 0); }
            40%, 60% { transform: translate3d(3px, 0, 0); }
        }

        /* ==========================================================================
           8. FOOTER & SELECTOR DE IDIOMA INLINE (Morphing In-Place sin Jitter)
           ========================================================================== */
        .main-footer {
            width: 100%;
            height: 48px; 
            flex-shrink: 0; 
            display: grid;
            grid-template-columns: 1.2fr 1fr 1.2fr; 
            align-items: center;
            z-index: 100;
            opacity: 0;
            pointer-events: none; 
            transform: translateY(8px);
            transition: opacity 1.25s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 1.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        body[data-state="welcome-ready"] .main-footer,
        body[data-state="narrative"] .main-footer,
        body[data-state="contact"] .main-footer,
        body[data-state="operations"] .main-footer {
            opacity: 0.47;
            pointer-events: auto; 
            transform: translateY(0);
            transition: opacity 0.4s cubic-bezier(0.25, 1, 0.5, 1), 
                        transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        }

        /* La franja solo recupera opacidad al señalar un control que siga visible.
           Así, al entrar en Operaciones, el cursor que queda en el centro no
           mantiene todo el footer negro después de desaparecer el botón. */
        .main-footer:not(.footer-resting):has(button.meta-text:hover, a.meta-text:hover),
        .main-footer:not(.footer-resting):has(:focus-visible) {
            opacity: 1 !important;
        }

        /* Mantenemos el brillo encendido al 100% únicamente si el selector está abierto */
        .main-footer:has(.lang-selector-inline.is-open) { opacity: 1 !important; }

        /* Clase de bloqueo temporal por hardware */
        .main-footer.footer-resting {
            pointer-events: none !important; 
        }

        .footer-col-left { display: flex; justify-content: flex-start; }
        .footer-col-center { display: flex; justify-content: center; }
        .footer-col-right { display: flex; justify-content: flex-end; }

        .legal-link {
            position: absolute;
            left: 50%;
            bottom: max(3px, env(safe-area-inset-bottom));
            z-index: 120;
            transform: translateX(-50%);
            color: var(--text-main);
            font-size: 9px;
            line-height: 1;
            letter-spacing: 0.55px;
            text-transform: uppercase;
            text-decoration: none;
            opacity: 0.42;
            padding: 5px 8px;
            transition: opacity 0.25s ease;
        }

        .legal-link:hover,
        .legal-link:focus-visible { opacity: 0.8; }

        .meta-text {
            font-size: 12px; 
            line-height: 20px;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            color: var(--text-main);
            background: none;
            border: none;
            font-family: inherit;
            cursor: pointer;
            text-decoration: none;
            font-weight: 500;
            padding: 14px 12px; 
            display: inline-block;
            will-change: transform, letter-spacing;
            transition: color 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                        letter-spacing 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
                        transform 0.1s ease;
        }

        .meta-text:hover { color: var(--text-featured); letter-spacing: 1.4px; }
        .meta-text:active { transform: scale(0.96); }

        .footer-col-left #btn-contact,
        .footer-col-left #btn-back,
        .footer-col-left #btn-operation-left { padding-left: 0; transform-origin: left center; }
        .footer-col-center #btn-operations-footer { transform-origin: center center; }

        .operation-footer-control {
            display: none;
            white-space: nowrap;
        }

        .form-footer-control {
            display: none;
            white-space: nowrap;
        }

        .operation-progress {
            cursor: default;
            pointer-events: none;
        }

        .form-progress {
            cursor: default;
            pointer-events: none;
            opacity: 0.5;
        }

        #btn-operation-right {
            padding-right: 0;
            transform-origin: right center;
        }
        
        /* Contenedor estático calibrado. Protege los márgenes exteriores */
        .lang-selector-inline {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            height: 48px;
            width: 110px; 
        }

        #lang-toggle {
            position: absolute;
            right: 0;
            padding-right: 0; 
            transform-origin: right center;
            will-change: transform, opacity;
            transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .lang-options-slide {
            position: absolute;
            right: 0;
            display: flex;
            align-items: center;
            opacity: 0;
            transform: translateX(8px);
            pointer-events: none;
            will-change: transform, opacity;
            transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .lang-selector-inline.is-open #lang-toggle {
            opacity: 0;
            transform: translateX(-8px);
            pointer-events: none;
        }

        .lang-selector-inline.is-open .lang-options-slide {
            opacity: 1;
            transform: translateX(0);
            pointer-events: auto;
        }

        .lang-divider-dot {
            font-size: 11px;
            opacity: 0.25;
            color: var(--text-main);
            padding: 0 4px;
            user-select: none;
        }

        .lang-opt { padding: 14px 6px !important; }

        .lang-opt.is-active {
            font-weight: 700;
            color: var(--text-main);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        /* CONTROL DE VISIBILIDAD DE ESTADOS */
        #btn-back, #btn-cancel-contact { display: none; }

        body[data-state="narrative"] #btn-contact { display: none; }
        body[data-state="narrative"] #btn-back { display: block; }

        body[data-state="contact"] .main-footer { opacity: 1; }
        body[data-state="contact"] #btn-contact { display: none; }
        body[data-state="contact"] #btn-back { display: none; }
        body[data-state="contact"] #btn-operations-footer { display: none; }
        body[data-state="contact"] #lang-inline-container { display: none; }
        body[data-state="contact"] #btn-cancel-contact {
            display: block;
            opacity: 0.47;
            padding-left: 0;
        }
        body[data-state="contact"] #btn-form-previous,
        body[data-state="contact"] #form-progress,
        body[data-state="contact"] #btn-form-next { display: inline-block; }
        body[data-state="contact"] #btn-form-previous {
            padding-left: 0;
            opacity: 0.62;
        }
        body[data-state="contact"] #btn-form-next {
            padding-right: 0;
            font-weight: 800;
            opacity: 1;
            letter-spacing: 0.95px;
        }

        body[data-state="operations"] #btn-contact { display: none; }
        body[data-state="operations"] #btn-operations-footer { display: none; }
        body[data-state="operations"][data-operation-mode="index"] #btn-back { display: block; }
        body[data-state="operations"][data-operation-mode="reading"] #btn-operation-left,
        body[data-state="operations"][data-operation-mode="reading"] #operation-progress,
        body[data-state="operations"][data-operation-mode="reading"] #btn-operation-right { display: inline-block; }
        body[data-state="operations"][data-operation-mode="reading"] #lang-inline-container { display: none; }

        /* ======================================================================
           9. PÁGINAS LEGALES Y 404
           ====================================================================== */
        body.legal-page,
        body.error-page {
            height: 100dvh;
            overflow: hidden;
        }

        .legal-shell {
            width: 100%;
            max-width: 38rem;
            height: 100dvh;
            margin: 0 auto;
            padding: var(--gutter) 24px;
            display: grid;
            grid-template-rows: auto minmax(0, 1fr) 48px;
            gap: 18px;
        }

        .legal-header {
            opacity: 0.47;
        }

        .legal-header .brand-title {
            display: inline-block;
            text-decoration: none;
        }

        .legal-scroll {
            min-height: 0;
            overflow-y: auto;
            overscroll-behavior: contain;
            scrollbar-width: thin;
            padding: 8px 10px 42px 0;
        }

        .legal-scroll h1 {
            margin-bottom: 42px;
            font-size: clamp(2rem, 7vw, 3rem);
            line-height: 1;
            letter-spacing: -0.04em;
        }

        .legal-scroll section + section { margin-top: 54px; }
        .legal-scroll h2 {
            margin-bottom: 24px;
            font-size: 1.45rem;
            line-height: 1.2;
            letter-spacing: -0.025em;
        }
        .legal-scroll h3 {
            margin: 28px 0 8px;
            font-size: 0.75rem;
            line-height: 1.4;
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }
        .legal-scroll p,
        .legal-scroll li {
            font-size: 0.96rem;
            line-height: 1.65;
        }
        .legal-scroll p + p { margin-top: 12px; }
        .legal-scroll ul { padding-left: 1.15rem; }
        .legal-scroll li + li { margin-top: 8px; }
        .legal-updated { margin-top: 54px !important; opacity: 0.5; }

        .legal-footer {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            opacity: 0.47;
        }
        .legal-footer > :first-child { justify-self: start; padding-left: 0; }
        .legal-footer > :nth-child(2) { justify-self: center; }
        .legal-footer > :last-child { justify-self: end; padding-right: 0; }
        .legal-footer:hover,
        .legal-footer:has(:focus-visible) { opacity: 1; }

        .error-page main {
            width: min(100% - 48px, 38rem);
            height: 100dvh;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
            gap: 14px;
        }
        .error-page h1 {
            font-size: clamp(2rem, 8vw, 3.5rem);
            line-height: 1.05;
            letter-spacing: -0.045em;
        }
        .error-page p:not(.tag-line) { opacity: 0.55; }
        .error-page nav { display: flex; gap: 10px; margin-top: 20px; }
        .error-page nav a { color: inherit; text-underline-offset: 4px; }

        /* ==========================================================================
           10. CALIBRACIÓN DE RELEVO TIPOGRÁFICO (Ink Swap Physics)
           ========================================================================== */
        @keyframes inkEvaporate {
            0% { opacity: 1; filter: blur(0px); transform: scale(1); }
            100% { opacity: 0; filter: blur(4px); transform: scale(0.99); }
        }
        @keyframes inkMaterialize {
            0% { opacity: 0; filter: blur(4px); transform: scale(0.99); }
            100% { opacity: 1; filter: blur(0px); transform: scale(1); }
        }

        /* Clases de estado de transición controladas por GPU */
        .lang-evaporating {
            animation: inkEvaporate 0.2s cubic-bezier(0.4, 0, 1, 1) forwards !important;
        }
        .lang-materializing {
            animation: inkMaterialize 0.42s cubic-bezier(0.25, 1, 0.5, 1) forwards !important;
        }

        /* ==========================================================================
           11. RESPONSIVE DESKTOP 
           ========================================================================== */
        @media (max-width: 767px) {
            /* Carril exclusivo para la marca focal: mantiene el contenido fuera
               de su huella sin alterar la retícula del header ni del footer. */
            .view-welcome,
            .view-narrative,
            .view-contact,
            .view-operations {
                padding-right: 20px;
            }
        }

        @media (max-width: 520px) {
            .operation-file-link {
                grid-template-columns: 30px minmax(0, 1fr);
            }

            .operation-file-status {
                grid-column: 2;
                padding-top: 0;
            }

            .operation-section-heading {
                display: block;
            }

            .operation-section-heading > p {
                margin-top: 5px;
                text-align: left;
            }

            .evidence-reframe-row {
                grid-template-columns: 1fr;
                gap: 7px;
            }

            .evidence-arrow {
                text-align: left;
                transform: rotate(90deg);
                transform-origin: left center;
                padding: 0;
            }

            .evidence-boundary {
                grid-template-columns: 1fr;
            }

            .evidence-claims,
            .evidence-claims + .evidence-claims {
                padding: 16px 0 18px;
                border-left: 0;
            }

            .evidence-claims + .evidence-claims {
                border-top: 1px solid rgba(65, 64, 60, 0.15);
            }

            .operation-footer-control,
            .operation-progress,
            .form-footer-control,
            .form-progress,
            #btn-cancel-contact {
                font-size: 10px;
                letter-spacing: 0.55px;
            }
        }

        @media (min-width: 768px) {
            :root {
                --gutter: 32px;
                --font-editorial: 1.55rem;
            }
            .app-container { padding: var(--gutter) 0; } 
            .focus-companion { right: -48px; }
            .welcome-fade-block { padding-top: 46px; }
            body[data-state="contact"] .content-viewport,
            body[data-state="operations"] .content-viewport { padding-top: 0; justify-content: center; }

            .view-contact, .view-operations { padding-top: 32px; }
            body[data-state="welcome-left"] #box-welcome { top: 50%; left: 0; transform: translate(0, -50%); }
            body[data-state="welcome-ready"] #box-welcome,
            body[data-state="narrative"] #box-welcome,
            body[data-state="contact"] #box-welcome,
            body[data-state="operations"] #box-welcome { top: 0; left: 0; transform: translate(0, 0); }

            .scrolling-p { padding: 32px 0; }
            .operation-explanation,
            .operation-limit p,
            .evidence-scenario p,
            .evidence-step-copy span,
            .evidence-reframe p,
            .evidence-claims li { font-size: 18px; }
            .operation-article h3 { font-size: 2rem; }
            .main-footer { height: 40px; }
            .legal-shell { grid-template-rows: auto minmax(0, 1fr) 40px; }
            .main-footer .meta-text { padding: 10px 12px; }
            .main-footer .footer-col-left .meta-text { padding-left: 0; }
            .main-footer .footer-col-right .meta-text { padding-right: 0; }
        }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                scroll-behavior: auto !important;
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }

            .scrolling-p, .image-box { filter: blur(1.75px); }
            .scrolling-p.is-reading, .image-box.is-reading { filter: blur(0); }
            .focus-companion.is-updating { opacity: 0.58 !important; }

            /* El cambio de idioma conserva su relevo visual incluso si el sistema
               reduce el resto de movimientos de interfaz. */
            .lang-evaporating {
                animation: inkEvaporate 0.2s cubic-bezier(0.4, 0, 1, 1) forwards !important;
            }
            .lang-materializing {
                animation: inkMaterialize 0.42s cubic-bezier(0.25, 1, 0.5, 1) forwards !important;
            }
        }