/* KNOWMADA · BRANDBOOK v3.2 · MODO DARK */
        :root {
            --kn-tinta:        #0B0F14;
            --kn-tinta-deep:   #05070A;
            --kn-tinta-soft:   #1F2933;
            --kn-blanco:       #FFFFFF;
            --kn-papel:        #F5F7FA;
            --kn-piedra:       #E5E7EB;
            --kn-grafito:      #1F2933;
            --kn-hormigon:     #6B7280;
            --kn-lima:         #B7FF00;
            --kn-lima-deep:    #9DE600;
            --kn-ambar:        #FF7A1A;
            --kn-blue:         #2563FF;
            --kn-violet:       #7C3AED;
            --kn-fuchsia:      #EC4899;
            --kn-gradient-ai:  linear-gradient(90deg, #2563FF, #7C3AED, #EC4899);
            --kn-font:         'IBM Plex Sans', 'Inter', system-ui, sans-serif;
            --kn-font-mono:    'IBM Plex Mono', 'JetBrains Mono', ui-monospace, Consolas, monospace;
            --max-width:       1180px;
            --section-padding: clamp(4rem, 8vw, 7rem);
            --kn-border-dark:  #1F2933;
        }

        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: var(--kn-tinta); }
        body {
            font-family: var(--kn-font);
            background-color: var(--kn-tinta);
            color: var(--kn-piedra);
            line-height: 1.55;
            font-size: 16px;
            font-weight: 400;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img, svg { display: block; max-width: 100%; }
        a { color: inherit; text-decoration: none; }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 clamp(1.25rem, 4vw, 2rem);
        }
        section { padding: var(--section-padding) 0; }

        /* SVG defs container · oculto */
        .svg-defs {
            position: absolute;
            width: 0;
            height: 0;
            overflow: hidden;
        }

        /* Banda gradiente IA · sello permanente */
        .ai-band {
            height: 3px;
            width: 100%;
            background: var(--kn-gradient-ai);
            position: fixed;
            top: 0;
            left: 0;
            z-index: 101;
        }

        /* Reveal animations */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                        transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .reveal.is-visible { opacity: 1; transform: translateY(0); }
        .reveal-stagger > .reveal:nth-child(2) { transition-delay: 0.06s; }
        .reveal-stagger > .reveal:nth-child(3) { transition-delay: 0.12s; }
        .reveal-stagger > .reveal:nth-child(4) { transition-delay: 0.18s; }
        .reveal-stagger > .reveal:nth-child(5) { transition-delay: 0.24s; }
        .reveal-stagger > .reveal:nth-child(6) { transition-delay: 0.30s; }
        .reveal-stagger > .reveal:nth-child(7) { transition-delay: 0.36s; }
        .reveal-stagger > .reveal:nth-child(8) { transition-delay: 0.42s; }
        .reveal-stagger > .reveal:nth-child(9) { transition-delay: 0.48s; }

        /* ============================================
           LOGO · LOCKUP DARK
           Geometría oficial brandkit v3.2
           - Isotipo: viewBox 128x128, eje x=20 y=16 (14x96),
             anillo centro (74,72) re=40 ri=28, gap 1u en x=74
           - Wordmark: viewBox 215x56, "o" partida en x=64
           ============================================ */
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            line-height: 1;
            color: var(--kn-blanco);
        }
        .logo__iso {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }
        .logo__word {
            height: 26px;
            width: auto;
            flex-shrink: 0;
            display: block;
        }

        /* NAV · TINTA DEEP
           Brandkit v3.2 prohíbe glassmorphism/backdrop-filter.
           Se usa fondo sólido casi opaco para mantener la jerarquía
           sobre el contenido sin recurrir al blur. */
        .nav {
            position: fixed;
            top: 3px;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(5, 7, 10, 0.98);
            border-bottom: 1px solid var(--kn-border-dark);
        }
        .nav__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .nav__links { display: none; list-style: none; gap: 2.25rem; }
        .nav__links a {
            font-family: var(--kn-font);
            font-size: 0.8125rem;
            font-weight: 400;
            color: var(--kn-piedra);
            transition: color 0.2s;
        }
        .nav__links a:hover, .nav__links a:focus { color: var(--kn-lima); }
        .nav__cta {
            display: none;
            font-family: var(--kn-font);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 0.5rem 1.25rem;
            border: 1px solid var(--kn-blanco);
            color: var(--kn-blanco);
            border-radius: 2px;
            transition: background 0.2s, color 0.2s;
            cursor: pointer;
            background: transparent;
        }
        .nav__cta:hover, .nav__cta:focus {
            background: var(--kn-blanco);
            color: var(--kn-tinta);
        }
        .nav__toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .nav__toggle span {
            display: block;
            width: 22px;
            height: 1.5px;
            background: var(--kn-piedra);
        }
        .nav__mobile {
            display: none;
            position: fixed;
            top: 67px;
            left: 0;
            width: 100%;
            background: var(--kn-tinta-deep);
            border-bottom: 1px solid var(--kn-border-dark);
            padding: 1rem 0;
        }
        .nav__mobile.is-open { display: block; }
        .nav__mobile a {
            display: block;
            padding: 0.875rem clamp(1.25rem, 4vw, 2rem);
            font-size: 0.9375rem;
            color: var(--kn-piedra);
            border-bottom: 1px solid var(--kn-border-dark);
        }
        .nav__mobile a:last-child { border-bottom: none; }
        @media (min-width: 768px) {
            .nav__links { display: flex; }
            .nav__cta { display: inline-block; }
            .nav__toggle { display: none; }
        }

        /* MONO LABELS */
        .label-mono {
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            font-weight: 400;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--kn-hormigon);
            display: inline-block;
        }
        .num-mono {
            font-family: var(--kn-font-mono);
            font-size: 0.75rem;
            font-weight: 400;
            letter-spacing: 0.14em;
        }

        /* ============================================
           MOTIVOS VISUALES · derivados del isotipo
           Sistema generativo: usa primitivos oficiales de marca
           sin agregar elementos externos al sistema
           ============================================ */

        /* Anillo gigante de fondo · sello sectorial */
        .motif-ring {
            position: absolute;
            pointer-events: none;
            z-index: 0;
            color: var(--kn-tinta-soft);
            opacity: 0.55;
        }
        .motif-ring--lima {
            color: var(--kn-lima);
            opacity: 0.06;
        }
        /* En mobile, reducir presencia para no ahogar el contenido */
        @media (max-width: 767px) {
            .motif-ring {
                opacity: 0.25 !important;
                transform-origin: center;
            }
            .motif-ring--lima {
                opacity: 0.04 !important;
            }
            .motif-grid {
                opacity: 0.25 !important;
            }
        }

        /* Eje vertical individual · marca de inicio de bloque */
        .motif-axis {
            color: var(--kn-lima);
            display: inline-block;
            vertical-align: middle;
        }

        /* Bullet anillo · reemplaza dots */
        .motif-bullet {
            display: inline-block;
            width: 14px;
            height: 14px;
            color: var(--kn-tinta-soft);
            flex-shrink: 0;
        }

        /* Grilla rítmica de ejes · patrón de fondo CSS puro
           Líneas verticales finas que evocan medición/precisión */
        .motif-grid {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background-image: repeating-linear-gradient(
                90deg,
                transparent 0,
                transparent 79px,
                rgba(31, 41, 51, 0.4) 79px,
                rgba(31, 41, 51, 0.4) 80px
            );
            opacity: 0.5;
        }

        /* Línea divisora con anillo central · separador editorial */
        .motif-divider {
            display: flex;
            align-items: center;
            gap: 0.875rem;
            margin: 2.25rem 0;
            color: var(--kn-tinta-soft);
        }
        .motif-divider::before,
        .motif-divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--kn-border-dark);
        }
        .motif-divider svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }

        /* Sello de esquina (corner mark) en cards y secciones */
        .motif-corner {
            position: absolute;
            top: 1.25rem;
            right: 1.25rem;
            width: 22px;
            height: 22px;
            color: var(--kn-tinta-soft);
            opacity: 0.85;
            pointer-events: none;
        }

        /* Arco horizontal compuesto · connector visual entre bloques */
        .motif-connector {
            display: inline-flex;
            align-items: center;
            gap: 2px;
            color: var(--kn-tinta-soft);
        }
        .motif-connector svg { width: 12px; height: 12px; flex-shrink: 0; }

        /* HERO · TINTA DEEP */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 67px;
            background: var(--kn-tinta-deep);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 30%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(183, 255, 0, 0.04) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero__inner {
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
            align-items: center;
            width: 100%;
            position: relative;
            z-index: 1;
        }
        .hero__content { max-width: 920px; }
        .hero__title {
            font-family: var(--kn-font);
            font-size: clamp(2.125rem, 5.2vw, 3.875rem);
            font-weight: 600;
            line-height: 1.05;
            letter-spacing: -0.035em;
            color: var(--kn-blanco);
            margin-bottom: 1.75rem;
        }
        .hero__title .lima-word {
            color: var(--kn-lima);
            font-weight: 600;
            display: block;
        }
        .hero__pillars {
            font-family: var(--kn-font);
            font-size: clamp(0.9375rem, 1.45vw, 1.125rem);
            font-weight: 400;
            color: var(--kn-blanco);
            line-height: 1.55;
            margin-bottom: 2rem;
            max-width: 880px;
        }
        .hero__pillars .dot {
            color: var(--kn-lima);
            font-weight: 600;
            margin: 0 0.5rem;
            display: inline-block;
        }
        .hero__divider {
            width: 48px;
            height: 1px;
            background: var(--kn-lima);
            border: none;
            margin: 0 0 2rem 0;
        }
        .hero__subtitle {
            font-family: var(--kn-font);
            font-size: clamp(0.9375rem, 1.3vw, 1.0625rem);
            font-weight: 300;
            line-height: 1.6;
            color: var(--kn-piedra);
            max-width: 660px;
            margin-bottom: 2.5rem;
        }
        /* ============================================
           CTA FLOTANTE WHATSAPP
           Visible permanente · esquina inferior derecha
           Lima sólido = señal acción rápida (canal IA-aware)
           ============================================ */
        .wa-float {
            position: fixed;
            bottom: 1.5rem;
            right: 1.5rem;
            z-index: 99;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: var(--kn-ambar);
            color: var(--kn-blanco);
            border-radius: 4px;
            text-decoration: none;
            transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
            cursor: pointer;
            overflow: hidden;
            white-space: nowrap;
            box-shadow: 0 2px 4px rgba(11, 15, 20, 0.18);
        }
        .wa-float:hover {
            transform: translateY(-2px);
        }
        .wa-float__icon {
            width: 26px;
            height: 26px;
            flex-shrink: 0;
            color: var(--kn-blanco);
        }
        .wa-float__label {
            display: none;
            font-family: var(--kn-font);
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--kn-blanco);
            margin-left: 0.5rem;
            margin-right: 0.25rem;
            letter-spacing: -0.005em;
        }
        @media (min-width: 768px) {
            .wa-float {
                bottom: 1.75rem;
                right: 1.75rem;
                width: auto;
                height: 56px;
                padding: 0 1.5rem 0 1.25rem;
                border-radius: 4px;
            }
            .wa-float__label {
                display: inline-block;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            .wa-float, .wa-float:hover {
                transition: none;
                transform: none;
            }
        }

        .cta-amber {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            font-family: var(--kn-font);
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 1rem 1.75rem;
            background: var(--kn-ambar);
            color: var(--kn-blanco);
            border-radius: 2px;
            transition: background 0.2s, transform 0.2s;
            border: none;
            cursor: pointer;
        }
        .cta-amber:hover {
            transform: translateY(-1px);
        }
        .cta-amber svg { width: 16px; height: 16px; }
        .hero__meta {
            margin-top: 4rem;
            padding-top: 2rem;
            border-top: 1px solid var(--kn-border-dark);
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        .hero__meta-item .num-mono {
            color: var(--kn-lima);
            display: block;
            margin-bottom: 0.5rem;
        }
        .hero__meta-item-text {
            font-size: 0.875rem;
            line-height: 1.5;
            color: var(--kn-piedra);
        }
        @media (min-width: 768px) {
            .hero__meta {
                grid-template-columns: repeat(3, 1fr);
                gap: 3rem;
            }
        }

        /* SECTION HEADERS */
        .section-head {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
            margin-bottom: 3.5rem;
            max-width: 720px;
        }
        .section-head__num {
            color: var(--kn-lima);
            margin-bottom: 0.25rem;
            display: block;
        }
        .section-title {
            font-family: var(--kn-font);
            font-size: clamp(1.625rem, 3.5vw, 2.5rem);
            font-weight: 600;
            line-height: 1.12;
            letter-spacing: -0.025em;
            color: var(--kn-blanco);
        }
        .section-desc {
            font-size: 1rem;
            color: var(--kn-piedra);
            max-width: 620px;
            line-height: 1.6;
            font-weight: 400;
        }

        /* PROBLEMA · TINTA · 6 CARDS */
        #problema {
            background: var(--kn-tinta);
            border-top: 1px solid var(--kn-border-dark);
            border-bottom: 1px solid var(--kn-border-dark);
        }
        .problems {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            border-top: 1px solid var(--kn-border-dark);
        }
        .problem-card {
            padding: 2rem 0;
            border-bottom: 1px solid var(--kn-border-dark);
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 1.25rem;
            align-items: start;
        }
        .problem-card__num {
            font-family: var(--kn-font-mono);
            font-size: 0.75rem;
            letter-spacing: 0.14em;
            color: var(--kn-lima);
            padding-top: 0.25rem;
            min-width: 44px;
        }
        .problem-card__title {
            font-family: var(--kn-font);
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--kn-blanco);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
            line-height: 1.25;
        }
        .problem-card__text {
            font-size: 0.9375rem;
            color: var(--kn-piedra);
            line-height: 1.6;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .problems {
                grid-template-columns: repeat(2, 1fr);
                column-gap: 3rem;
            }
        }
        @media (min-width: 1024px) {
            .problems {
                grid-template-columns: repeat(3, 1fr);
                column-gap: 2.5rem;
            }
            .problem-card {
                display: block;
                padding: 2.25rem 0;
            }
            .problem-card__num {
                margin-bottom: 1.25rem;
                padding-top: 0;
            }
        }

        /* SERVICIOS · TINTA DEEP · 9 CARDS */
        #servicios { background: var(--kn-tinta-deep); }
        .services-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            border-top: 1px solid var(--kn-border-dark);
        }
        .service-card {
            padding: 2rem 0;
            border-bottom: 1px solid var(--kn-border-dark);
            position: relative;
        }
        .service-card__num {
            font-family: var(--kn-font-mono);
            font-size: 0.75rem;
            letter-spacing: 0.14em;
            color: var(--kn-lima);
            margin-bottom: 1rem;
            display: block;
        }
        .service-card__title {
            font-family: var(--kn-font);
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--kn-blanco);
            margin-bottom: 0.625rem;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .service-card__desc {
            font-size: 0.9375rem;
            color: var(--kn-piedra);
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }
        .service-card__outcome {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--kn-blanco);
            font-weight: 400;
        }
        .service-card__outcome svg {
            width: 14px;
            height: 14px;
            color: var(--kn-piedra);
            flex-shrink: 0;
        }
        @media (min-width: 768px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                column-gap: 2.5rem;
            }
            .service-card { padding: 2.25rem 0; }
        }
        @media (min-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(3, 1fr);
                column-gap: 2.5rem;
            }
        }

        /* METODOLOGÍA · TINTA · 6 PASOS */
        #metodologia {
            background: var(--kn-tinta);
            position: relative;
        }
        #metodologia::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--kn-gradient-ai);
        }
        .methodology {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            border-top: 1px solid var(--kn-border-dark);
        }
        .method-step {
            padding: 2rem 0;
            border-bottom: 1px solid var(--kn-border-dark);
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 1.5rem;
            align-items: start;
        }
        .method-step__num {
            font-family: var(--kn-font-mono);
            font-size: 0.875rem;
            font-weight: 400;
            letter-spacing: 0.1em;
            color: var(--kn-lima);
            min-width: 56px;
            padding-top: 0.125rem;
        }
        .method-step__title {
            font-family: var(--kn-font);
            font-size: 1.1875rem;
            font-weight: 600;
            color: var(--kn-blanco);
            margin-bottom: 0.5rem;
            letter-spacing: -0.015em;
        }
        .method-step__text {
            font-size: 0.9375rem;
            color: var(--kn-piedra);
            line-height: 1.6;
            max-width: 680px;
        }
        @media (min-width: 768px) {
            .methodology {
                grid-template-columns: repeat(2, 1fr);
                column-gap: 3rem;
            }
            .method-step { padding: 2.25rem 0; }
        }
        @media (min-width: 1024px) {
            .methodology {
                grid-template-columns: repeat(3, 1fr);
                column-gap: 2.5rem;
            }
            .method-step { display: block; }
            .method-step__num {
                margin-bottom: 1.25rem;
                padding-top: 0;
            }
        }

        /* DIFERENCIAL · TINTA DEEP */
        #diferencial { background: var(--kn-tinta-deep); }
        .differentials {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        .diff-card {
            padding: 2rem 1.75rem;
            background: var(--kn-tinta);
            border-left: 3px solid var(--kn-lima);
            border-top: 1px solid var(--kn-border-dark);
            border-right: 1px solid var(--kn-border-dark);
            border-bottom: 1px solid var(--kn-border-dark);
            position: relative;
            overflow: hidden;
        }
        .diff-card .motif-corner {
            top: 1rem;
            right: 1rem;
            width: 26px;
            height: 26px;
            color: var(--kn-tinta-soft);
            opacity: 1;
        }
        .diff-card__num {
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--kn-lima);
            margin-bottom: 1rem;
            display: block;
        }
        .diff-card__title {
            font-family: var(--kn-font);
            font-size: 1.1875rem;
            font-weight: 600;
            color: var(--kn-blanco);
            margin-bottom: 0.875rem;
            letter-spacing: -0.015em;
        }
        .diff-card__text {
            font-size: 0.9375rem;
            color: var(--kn-piedra);
            line-height: 1.65;
        }
        @media (min-width: 768px) {
            .differentials {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.5rem;
            }
            .diff-card { padding: 2.25rem 1.75rem; }
        }

        /* ============================================
           QUIÉNES SOMOS · TINTA · 2 columnas
           Foto + perfil profesional
           ============================================ */
        #quienes {
            background: var(--kn-tinta);
            border-top: 1px solid var(--kn-border-dark);
        }
        .about-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: start;
        }
        .about-photo {
            position: relative;
            background: var(--kn-tinta-deep);
            border: 1px solid var(--kn-border-dark);
            overflow: hidden;
            max-width: 360px;
        }
        .about-photo img {
            width: 100%;
            height: auto;
            display: block;
            filter: grayscale(8%) contrast(1.02);
        }
        /* Marca lima esquina sup-izq · referencia identitaria */
        .about-photo::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 24px;
            height: 3px;
            background: var(--kn-lima);
            z-index: 2;
        }
        .about-photo::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 24px;
            background: var(--kn-lima);
            z-index: 2;
        }
        .about-content__name {
            font-family: var(--kn-font);
            font-size: clamp(1.375rem, 2.4vw, 1.75rem);
            font-weight: 600;
            color: var(--kn-blanco);
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 0.5rem;
        }
        .about-content__role {
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            font-weight: 400;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--kn-lima);
            margin-bottom: 1.75rem;
            display: block;
        }
        .about-content p {
            font-size: 0.9375rem;
            color: var(--kn-piedra);
            line-height: 1.65;
            margin-bottom: 1rem;
            max-width: 640px;
        }
        .about-content p:last-of-type { margin-bottom: 0; }

        /* LinkedIn link · about section
           Lima sólido · señal de credencial profesional verificable
           Flex-wrap evita overflow en mobile pequeño cuando el URL es largo. */
        .about-linkedin {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.625rem;
            margin-top: 1.75rem;
            padding: 0.625rem 1rem;
            max-width: 100%;
            border: 1px solid var(--kn-border-dark);
            background: var(--kn-tinta-deep);
            color: var(--kn-blanco);
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            transition: border-color 0.2s, color 0.2s, background 0.2s;
            border-radius: 2px;
        }
        .about-linkedin span {
            overflow-wrap: anywhere;
            min-width: 0;
        }
        .about-linkedin:hover {
            border-color: var(--kn-lima);
            color: var(--kn-lima);
        }
        .about-linkedin svg {
            width: 18px;
            height: 18px;
            color: var(--kn-lima);
            flex-shrink: 0;
            transition: color 0.2s;
        }
        .about-linkedin:hover svg {
            color: var(--kn-blanco);
        }

        .about-credentials {
            margin-top: 2rem;
            padding-top: 1.75rem;
            border-top: 1px solid var(--kn-border-dark);
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        .about-cred__label {
            font-family: var(--kn-font-mono);
            font-size: 0.625rem;
            font-weight: 400;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--kn-lima);
            margin-bottom: 0.375rem;
            display: block;
        }
        .about-cred__list {
            font-size: 0.8125rem;
            color: var(--kn-piedra);
            line-height: 1.55;
            list-style: none;
        }
        .about-cred__list li {
            padding-left: 0.875rem;
            position: relative;
            margin-bottom: 0.375rem;
            overflow-wrap: anywhere;
            hyphens: auto;
        }
        .about-cred__list li:last-child { margin-bottom: 0; }
        .about-cred__list li::before {
            content: '·';
            color: var(--kn-lima);
            position: absolute;
            left: 0;
            font-weight: 600;
        }

        @media (min-width: 768px) {
            .about-layout {
                grid-template-columns: 360px 1fr;
                gap: 3.5rem;
            }
            .about-credentials {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .about-layout {
                grid-template-columns: 400px 1fr;
                gap: 4rem;
            }
            .about-photo {
                max-width: 400px;
            }
        }

        /* NEWSLETTER · TINTA */
        .newsletter-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: start;
        }
        .newsletter-intro p {
            font-size: 1.0625rem;
            line-height: 1.6;
            color: var(--kn-piedra);
            margin-bottom: 1.25rem;
        }
        .newsletter-intro p:last-child { margin-bottom: 0; }
        .newsletter-intro strong {
            color: var(--kn-blanco);
            font-weight: 600;
        }
        .newsletter-form {
            background: var(--kn-tinta-deep);
            border: 1px solid var(--kn-border-dark);
            padding: 2rem;
        }
        .newsletter-form__label {
            display: block;
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--kn-piedra);
            margin-bottom: 0.75rem;
        }
        .newsletter-form__row {
            display: flex;
            gap: 0;
            border: 1px solid var(--kn-border-dark);
            background: var(--kn-tinta);
            transition: border-color 0.2s;
        }
        .newsletter-form__row:focus-within {
            border-color: var(--kn-lima);
        }
        .newsletter-form__input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            padding: 0.875rem 1rem;
            font-family: var(--kn-font);
            font-size: 0.9375rem;
            color: var(--kn-blanco);
        }
        .newsletter-form__input::placeholder { color: var(--kn-hormigon); }
        .newsletter-form__submit {
            background: var(--kn-blanco);
            color: var(--kn-tinta);
            border: none;
            padding: 0 1.5rem;
            font-family: var(--kn-font);
            font-size: 0.875rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            white-space: nowrap;
        }
        .newsletter-form__submit:hover { background: var(--kn-piedra); }
        .newsletter-form__hint {
            display: block;
            margin-top: 0.875rem;
            font-size: 0.8125rem;
            color: var(--kn-hormigon);
            line-height: 1.5;
        }
        .newsletter-form__feedback {
            margin-top: 1rem;
            padding: 0.875rem 1rem;
            font-size: 0.875rem;
            line-height: 1.5;
            display: none;
            border-left: 3px solid var(--kn-lima);
            background: var(--kn-tinta);
            color: var(--kn-blanco);
        }
        .newsletter-form__feedback.is-visible { display: block; }
        .newsletter-form__feedback.is-error {
            border-left-color: var(--kn-ambar);
            color: var(--kn-piedra);
        }
        /* Feedback del form de contacto · mismo lenguaje visual que newsletter */
        .contact-form__feedback {
            margin-bottom: 0.5rem;
            padding: 0.875rem 1rem;
            font-family: var(--kn-font);
            font-size: 0.875rem;
            font-weight: 400;
            line-height: 1.5;
            display: none;
            border-left: 3px solid var(--kn-lima);
            background: var(--kn-tinta-soft);
            color: var(--kn-blanco);
        }
        .contact-form__feedback.is-visible { display: block; }
        .contact-form__feedback.is-error {
            border-left-color: var(--kn-ambar);
            color: var(--kn-piedra);
        }
        @media (max-width: 768px) {
            .newsletter-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .newsletter-form { padding: 1.5rem; }
            .newsletter-form__row {
                flex-direction: column;
            }
            .newsletter-form__submit {
                padding: 0.875rem 1rem;
            }
        }

        /* CONTACTO · TINTA DEEP */
        #contacto {
            background: var(--kn-tinta-deep);
            border-top: 1px solid var(--kn-border-dark);
        }
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
            align-items: start;
        }
        .contact-meta {
            display: grid;
            gap: 1.75rem;
            padding-top: 0.5rem;
        }
        .contact-meta__item .num-mono {
            color: var(--kn-lima);
            display: block;
            margin-bottom: 0.5rem;
        }
        .contact-meta__item-value {
            font-size: 0.9375rem;
            color: var(--kn-blanco);
        }

        /* QR · WhatsApp · contenedor blanco funcional
           Excepción cromática justificada: los QR requieren
           black-on-white para legibilidad de escaneo */
        .qr-card {
            background: var(--kn-blanco);
            padding: 0.875rem;
            border-radius: 4px;
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            gap: 0.625rem;
            margin-top: 0.5rem;
            max-width: 200px;
        }
        .qr-card__image {
            width: 168px;
            height: 168px;
            display: block;
        }
        .qr-card__hint {
            font-family: var(--kn-font-mono);
            font-size: 0.625rem;
            font-weight: 400;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--kn-tinta);
            text-align: center;
            line-height: 1.4;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            background: var(--kn-tinta);
            padding: 2.25rem;
            border: 1px solid var(--kn-border-dark);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            font-weight: 400;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--kn-hormigon);
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            font-family: var(--kn-font);
            font-size: 0.9375rem;
            padding: 0.75rem 0;
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--kn-border-dark);
            color: var(--kn-blanco);
            transition: border-color 0.2s;
            outline: none;
            border-radius: 0;
            width: 100%;
        }
        .form-group select {
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            background-image: linear-gradient(45deg, transparent 50%, var(--kn-piedra) 50%),
                              linear-gradient(135deg, var(--kn-piedra) 50%, transparent 50%);
            background-position: calc(100% - 14px) 50%, calc(100% - 8px) 50%;
            background-size: 6px 6px, 6px 6px;
            background-repeat: no-repeat;
            cursor: pointer;
            padding-right: 24px;
        }
        .form-group select option {
            background: var(--kn-tinta);
            color: var(--kn-blanco);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus { border-color: var(--kn-lima); }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder { color: var(--kn-hormigon); }
        .form-honeypot {
            position: absolute;
            left: -9999px;
            opacity: 0;
            pointer-events: none;
        }
        .form-submit {
            font-family: var(--kn-font);
            font-size: 0.875rem;
            font-weight: 600;
            padding: 0.875rem 1.75rem;
            background: var(--kn-blanco);
            color: var(--kn-tinta);
            border: none;
            border-radius: 2px;
            cursor: pointer;
            transition: background 0.2s, color 0.2s;
            align-self: flex-start;
            letter-spacing: 0.01em;
            margin-top: 0.5rem;
        }
        .form-submit:hover {
            background: var(--kn-lima);
            color: var(--kn-tinta);
        }
        @media (min-width: 768px) {
            .contact-layout {
                grid-template-columns: 1fr 1.1fr;
                gap: 4rem;
            }
        }

        /* FOOTER · TINTA DEEP */
        .footer {
            background: var(--kn-tinta-deep);
            padding: 4rem 0 2rem;
            color: var(--kn-piedra);
            border-top: 1px solid var(--kn-border-dark);
        }
        .footer__top {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid var(--kn-border-dark);
        }
        .footer__brand .logo__iso { width: 36px; height: 36px; }
        .footer__brand .logo__word { height: 32px; }
        .footer__tagline {
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--kn-hormigon);
            margin-top: 1rem;
        }
        .footer__col h4 {
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            font-weight: 400;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--kn-lima);
            margin-bottom: 1rem;
        }
        .footer__nav {
            display: flex;
            flex-direction: column;
            gap: 0.625rem;
            list-style: none;
        }
        .footer__nav a {
            font-size: 0.875rem;
            color: var(--kn-piedra);
            transition: color 0.2s;
        }
        .footer__nav a:hover { color: var(--kn-lima); }
        .footer__nav a.footer__nav--icon {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer__nav a.footer__nav--icon svg {
            width: 14px;
            height: 14px;
            color: var(--kn-lima);
            flex-shrink: 0;
        }
        .footer__social {
            display: flex;
            gap: 0.625rem;
        }
        .footer__social a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--kn-piedra);
            border: 1px solid var(--kn-border-dark);
            transition: color 0.2s, border-color 0.2s, background 0.2s;
        }
        .footer__social a:hover {
            color: var(--kn-tinta);
            border-color: var(--kn-lima);
            background: var(--kn-lima);
        }
        .footer__social svg { width: 16px; height: 16px; }
        .footer__bottom {
            padding-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            font-family: var(--kn-font-mono);
            font-size: 0.6875rem;
            letter-spacing: 0.12em;
            color: var(--kn-hormigon);
        }
        @media (min-width: 768px) {
            .footer__top {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
                gap: 3rem;
            }
            .footer__bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }
        /* ============================================
           SISTEMA TIPOGRÁFICO · JUSTIFICACIÓN CONTROLADA
           ============================================
           Aplica justify SOLO a párrafos largos institucionales.
           En mobile <=480px revierte a left para evitar ríos
           tipográficos en columnas estrechas. Hyphens auto se
           mantiene siempre como ayuda al renderer. */
        .text-justify-balanced {
            text-align: justify;
            text-justify: inter-word;
            hyphens: auto;
            -webkit-hyphens: auto;
            overflow-wrap: break-word;
            text-wrap: pretty;
        }

        /* Utility · acento cromático lima inline (reemplaza inline-styles) */
        .text-accent {
            color: var(--kn-lima);
            font-weight: 600;
        }

        /* ============================================
           AJUSTES RESPONSIVE FINOS
           Cobertura para mobile estándar (≤480px) y mobile
           pequeño (≤360px). Resuelve overflow y compresión
           reportados sobre todo en sección Quiénes Somos.
           ============================================ */

        /* Tablet pequeña: ajustes intermedios */
        @media (max-width: 768px) {
            section {
                padding: clamp(2.75rem, 7vw, 4.5rem) 0;
            }
            .section-head {
                margin-bottom: 2.5rem;
            }
        }

        /* Mobile estándar: vuelve a alineación izquierda en bloques
           justificados para preservar legibilidad. Reduce paddings. */
        @media (max-width: 480px) {
            .text-justify-balanced {
                text-align: left;
                hyphens: auto;
            }

            /* Hero · ajustes mobile pequeño */
            .hero {
                min-height: auto;
                padding-top: 5rem;
                padding-bottom: 2.5rem;
            }
            .hero__meta {
                margin-top: 2.5rem;
                padding-top: 1.5rem;
                gap: 1.25rem;
            }
            .hero__pillars {
                line-height: 1.65;
            }
            .hero__pillars .dot {
                margin: 0 0.35rem;
            }

            /* Métricas hero: evitar overflow por letter-spacing del mono */
            .hero__meta-item .num-mono {
                font-size: 0.6875rem;
                letter-spacing: 0.10em;
                overflow-wrap: anywhere;
            }

            /* Cards: padding vertical reducido */
            .problem-card,
            .service-card,
            .method-step {
                padding: 1.5rem 0;
            }
            .diff-card {
                padding: 1.5rem 1.25rem;
            }

            /* About: ajustes específicos al problema reportado */
            #quienes .about-photo {
                max-width: 100%;
            }
            .about-content__name {
                line-height: 1.2;
            }
            .about-cred__list {
                font-size: 0.8125rem;
            }
            .about-cred__list li {
                line-height: 1.6;
                margin-bottom: 0.5rem;
            }
            .about-linkedin {
                width: 100%;
                justify-content: flex-start;
                font-size: 0.625rem;
                letter-spacing: 0.12em;
            }
            .about-credentials {
                margin-top: 1.5rem;
                padding-top: 1.25rem;
                gap: 1.5rem;
            }

            /* Newsletter form: padding reducido */
            .newsletter-form {
                padding: 1.25rem;
            }

            /* Form contacto: padding reducido para más ancho útil */
            .contact-form {
                padding: 1.25rem;
                gap: 1rem;
            }
            .contact-meta {
                gap: 1.25rem;
            }

            /* Footer: gap reducido entre columnas apiladas */
            .footer {
                padding: 3rem 0 1.5rem;
            }
            .footer__top {
                gap: 1.75rem;
                padding-bottom: 1.75rem;
            }
        }

        /* Mobile pequeño: iPhone SE, Android compactos (320-360px) */
        @media (max-width: 360px) {
            section {
                padding: 2.5rem 0;
            }

            /* Hero: tipografía y meta más compactos */
            .hero {
                padding-top: 4.5rem;
            }
            .hero__title {
                letter-spacing: -0.025em;
            }

            /* Cards: spacing mínimo respirable */
            .problem-card,
            .service-card,
            .method-step {
                padding: 1.25rem 0;
            }

            /* About: scope final para 320px */
            .about-cred__list {
                font-size: 0.75rem;
            }
            .about-cred__list li {
                padding-left: 0.625rem;
            }
            .about-linkedin {
                padding: 0.5rem 0.75rem;
            }

            /* Form contacto en 320: padding más comprimido */
            .contact-form {
                padding: 1rem;
            }
            .newsletter-form {
                padding: 1rem;
            }

            /* Nav: padding lateral ligeramente menor */
            .nav__inner {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ============================================
           ACCESIBILIDAD · FOCUS VISIBLE
           Outline lima para foco por teclado. No afecta
           click del mouse (focus-visible solo en teclado).
           ============================================ */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible,
        .nav__toggle:focus-visible {
            outline: 2px solid var(--kn-lima);
            outline-offset: 2px;
        }
        .form-group input:focus-visible,
        .form-group select:focus-visible,
        .form-group textarea:focus-visible {
            outline: none;
            border-bottom-color: var(--kn-lima);
            box-shadow: 0 1px 0 0 var(--kn-lima);
        }