/* Toolkit Social — landing v2
   Tokens según docs/estrategia-rediseno.md */

:root {
    --ink: #25204F;
    --ink-deep: #1A1640;
    --violet: #7C78F2;
    --violet-strong: #6A5DE7;
    --violet-deep: #5548d6;
    --lavender: #EDEBFA;
    --lavender-line: #C2C8FA;
    --graphite: #4F4F4F;
    --white: #FFFFFF;

    --font: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

    /* Escala 1.25 */
    --fs-xs: 0.875rem;
    --fs-base: 1.0625rem;
    --fs-md: 1.3125rem;
    --fs-lg: 1.6875rem;
    --fs-xl: clamp(1.75rem, 1.2rem + 2vw, 2.625rem);

    --gutter: 1.5rem;
    --max: 75rem;
    --header-h: 4.5rem;
    --section-y: clamp(4rem, 3rem + 5vw, 7.5rem);

    --radius-sm: 6px;
    --radius: 8px;

    color-scheme: light;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--white);
    color: var(--ink);
    font-family: var(--font);
    font-size: var(--fs-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd {
    margin: 0;
}

ul,
ol {
    padding: 0;
    list-style: none;
}

a {
    color: var(--violet-strong);
}

:focus-visible {
    outline: 3px solid var(--violet-strong);
    outline-offset: 3px;
    border-radius: 2px;
}

[id] {
    scroll-margin-top: calc(var(--header-h) + 1rem);
}

.container {
    width: 100%;
    max-width: var(--max);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -4rem;
    z-index: 100;
    padding: 0.75rem 1rem;
    background: var(--ink);
    color: var(--white);
    border-radius: var(--radius);
}

.skip-link:focus {
    top: 1rem;
}

/* Botones y enlaces */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.75rem 1.5rem;
    border: 0;
    border-radius: var(--radius);
    background: var(--violet-strong);
    color: var(--white);
    font: 600 var(--fs-base)/1.2 var(--font);
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.btn:hover {
    background: var(--violet-deep);
}

.btn--small {
    min-height: 2.5rem;
    padding: 0.5rem 1.125rem;
    font-size: var(--fs-xs);
}

.btn--block {
    width: 100%;
}

.link-light {
    color: var(--white);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: var(--violet);
    text-decoration-thickness: 2px;
    text-underline-offset: 0.3em;
}

.link-light:hover {
    text-decoration-color: var(--white);
}

/* Marca (marcador temporal del logo) */

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--ink);
    text-decoration: none;
}

/* Versión reducida del logo (sin el lema, que a este tamaño no se lee) */
.brand__logo {
    display: block;
    width: auto;
    height: 2.5rem;
}

/* Header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgb(255 255 255 / 0.94);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--lavender);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-nav a:not(.btn) {
    color: var(--ink);
    font-weight: 500;
    font-size: 0.9375rem;
    text-decoration: none;
}

.site-nav a:not(.btn):hover {
    color: var(--violet-strong);
}

.nav-toggle {
    display: none;
}

@media (max-width: 52rem) {
    .nav-toggle {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        min-height: 2.75rem;
        padding: 0.5rem 0.75rem;
        border: 1px solid var(--lavender-line);
        border-radius: var(--radius);
        background: var(--white);
        color: var(--ink);
        font: 600 var(--fs-xs) var(--font);
        cursor: pointer;
    }

    .nav-toggle__bars,
    .nav-toggle__bars::before,
    .nav-toggle__bars::after {
        display: block;
        width: 1.125rem;
        height: 2px;
        background: currentColor;
        transition: transform 0.2s ease;
    }

    .nav-toggle__bars {
        position: relative;
    }

    .nav-toggle__bars::before,
    .nav-toggle__bars::after {
        content: "";
        position: absolute;
        left: 0;
    }

    .nav-toggle__bars::before {
        top: -6px;
    }

    .nav-toggle__bars::after {
        top: 6px;
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle__bars {
        background: transparent;
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
        transform: translateY(6px) rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
        transform: translateY(-6px) rotate(-45deg);
    }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        display: none;
        background: var(--white);
        border-bottom: 1px solid var(--lavender-line);
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0.5rem var(--gutter) 1.25rem;
    }

    .site-nav a:not(.btn) {
        display: block;
        padding: 0.875rem 0;
        border-bottom: 1px solid var(--lavender);
        font-size: var(--fs-base);
    }

    .site-nav .btn {
        margin-top: 1rem;
        width: 100%;
        min-height: 3rem;
        font-size: var(--fs-base);
    }
}

/* Hero: el engrane del logo llega en cuatro piezas (una por área) y encaja.
   La tipografía repite la idea: problema condensado, solución a ancho completo. */

.hero {
    background: var(--violet-strong);
    color: var(--white);
    padding-block: clamp(3.5rem, 2rem + 6vw, 7rem);
    overflow: hidden;
}

.hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(2rem, 1rem + 4vw, 5rem);
}

.hero__title {
    font-size: clamp(2.25rem, 1.1rem + 3.9vw, 4.375rem);
    font-weight: 600;
    line-height: 1.02;
    letter-spacing: -0.025em;
}

.hero__problem {
    display: block;
    font-stretch: 75%;
    color: var(--ink);
}

.hero__answer {
    display: block;
    margin-top: 0.3em;
    font-weight: 700;
    font-stretch: 100%;
    text-wrap: balance;
    color: var(--white);
}

.hero__body {
    max-width: 34rem;
    margin-top: 2.25rem;
    font-size: var(--fs-md);
    line-height: 1.55;
}

.hero__body p+p {
    margin-top: 0.75rem;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.25rem 2rem;
    margin-top: 2.25rem;
}

.hero .btn {
    background: var(--ink);
}

.hero .btn:hover {
    background: var(--ink-deep);
}

.hero .link-light {
    text-decoration-color: var(--ink);
}

.hero .link-light:hover {
    text-decoration-color: var(--white);
}

.hero__gear {
    position: relative;
    justify-self: end;
    width: 100%;
    max-width: 30rem;
    aspect-ratio: 1;
}

.gear {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
    fill: var(--ink);
}

/* Desplazamiento de cada pieza hacia afuera, en la dirección de su centro */
.gear__piece {
    transform-box: fill-box;
    transform-origin: center;
    transition: transform 0.25s ease;
}

.gear__piece--consulting { --x: -17px; --y: -42px; --r: -9deg; }
.gear__piece--data       { --x: 42px;  --y: -17px; --r: 7deg; }
.gear__piece--studio     { --x: 17px;  --y: 42px;  --r: -6deg; }
.gear__piece--lab        { --x: -42px; --y: 17px;  --r: 11deg; }

/* El engrane completo tapa las uniones una vez armado */
.gear__whole {
    transition: opacity 0.15s ease;
}

.gear__areas li {
    position: absolute;
}

.gear__area--consulting { top: 0; left: 0; }
.gear__area--data       { top: 0; right: 0; }
.gear__area--lab        { bottom: 0; left: 0; }
.gear__area--studio     { bottom: 0; right: 0; }

.gear__areas a {
    display: inline-block;
    padding: 0.25rem 0;
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: transparent;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.3em;
}

.gear__areas a:hover,
.gear__areas a:focus-visible {
    text-decoration-color: var(--ink);
}

/* Al señalar un área, su pieza se separa del engrane */
.hero__gear:has(.gear__areas a:is(:hover, :focus-visible)) .gear__whole {
    opacity: 0;
}

.hero__gear:has(.gear__area--consulting a:is(:hover, :focus-visible)) .gear__piece--consulting,
.hero__gear:has(.gear__area--data a:is(:hover, :focus-visible)) .gear__piece--data,
.hero__gear:has(.gear__area--studio a:is(:hover, :focus-visible)) .gear__piece--studio,
.hero__gear:has(.gear__area--lab a:is(:hover, :focus-visible)) .gear__piece--lab {
    transform: translate(calc(var(--x) * 0.45), calc(var(--y) * 0.45));
}

.hero :focus-visible {
    outline-color: var(--white);
}

.section--ink :focus-visible,
.site-footer :focus-visible {
    outline-color: var(--lavender-line);
}

/* Móvil: engrane compacto con las áreas en 2×2 a su lado (misma posición que sus piezas),
   para que titular y botón principal quepan en la primera pantalla */
@media (max-width: 52rem) {
    .hero {
        padding-block: 2rem 3rem;
    }

    .hero__grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 1.75rem;
    }

    .hero__gear {
        order: -1;
        display: grid;
        grid-template-columns: 6.5rem max-content max-content;
        grid-template-areas:
            "gear consulting data"
            "gear lab studio";
        align-items: center;
        justify-content: start;
        column-gap: 1.25rem;
        max-width: none;
        aspect-ratio: auto;
    }

    .gear {
        grid-area: gear;
        width: 6.5rem;
        height: 6.5rem;
    }

    .gear__areas {
        display: contents;
    }

    .gear__areas li {
        position: static;
    }

    .gear__area--consulting { grid-area: consulting; }
    .gear__area--data       { grid-area: data; }
    .gear__area--lab        { grid-area: lab; }
    .gear__area--studio     { grid-area: studio; }

    .gear__areas a {
        font-size: var(--fs-xs);
    }

    .hero__body {
        margin-top: 1.5rem;
        font-size: 1.125rem;
    }

    .hero__actions {
        margin-top: 1.75rem;
    }
}

/* Única animación de carga: las piezas encajan y entonces aparece la solución */
@media (prefers-reduced-motion: no-preference) {
    .gear__piece {
        animation: piece-join 0.9s cubic-bezier(0.65, 0, 0.25, 1) 0.55s backwards;
    }

    .gear__whole {
        animation: hold-hidden 1.45s linear;
    }

    .hero__answer {
        animation: answer-in 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) 1.3s backwards;
    }

    @keyframes piece-join {
        from {
            transform: translate(var(--x), var(--y)) rotate(var(--r));
        }
    }

    @keyframes hold-hidden {
        from, to {
            opacity: 0;
        }
    }

    @keyframes answer-in {
        from {
            opacity: 0;
            clip-path: inset(0 100% 0 0);
        }
        to {
            opacity: 1;
            clip-path: inset(0 0 0 0);
        }
    }
}

/* Secciones */

.section {
    padding-block: var(--section-y);
}

.section--lavender {
    background: var(--lavender);
}

.section--ink {
    background: var(--ink);
    color: var(--white);
}

.section__title {
    max-width: 22ch;
    font-size: var(--fs-xl);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem);
}

/* Quiénes somos: el titular repite el recurso del hero (condensada = separado, ancha = unido) */

.about {
    padding-top: var(--section-y);
}

.about__title {
    max-width: 24ch;
    font-size: clamp(2rem, 1.1rem + 3.2vw, 3.625rem);
    font-weight: 600;
    line-height: 1.04;
    letter-spacing: -0.025em;
}

.about__parts {
    display: block;
    font-stretch: 75%;
}

.about__whole {
    display: block;
    font-stretch: 100%;
}

.about__body {
    display: grid;
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 1.25rem 4rem;
    align-items: start;
    margin-top: clamp(1.5rem, 1rem + 2vw, 2.5rem);
}

.about__lead {
    max-width: 38rem;
    font-size: var(--fs-md);
    line-height: 1.5;
}

.about__cols {
    max-width: 30rem;
    color: var(--graphite);
}

.about__cols p+p {
    margin-top: 1rem;
}

/* Equipo: franja tinta; las disciplinas pasan de condensada a ancha */

.team {
    margin-top: clamp(3.5rem, 2.5rem + 3vw, 5rem);
    padding-block: clamp(3.5rem, 2.5rem + 3vw, 5rem);
    background: var(--ink);
    color: var(--lavender);
}

.team__head {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 1.25rem 4rem;
    align-items: end;
}

.team__head p {
    max-width: 30rem;
    font-size: var(--fs-md);
    line-height: 1.5;
}

.team__title {
    max-width: 16ch;
    font-size: var(--fs-xl);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--white);
}

.team__lead-in {
    margin-top: clamp(2rem, 1.5rem + 2vw, 3rem);
    color: var(--lavender-line);
}

.team__disciplines {
    display: flex;
    flex-wrap: wrap;
    gap: 0.1em 0.75em;
    margin-top: 0.75rem;
    font-size: clamp(1.5rem, 0.9rem + 2vw, 2.5rem);
    font-weight: 600;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--white);
}

.team__disciplines li:nth-child(1) { font-stretch: 75%; }
.team__disciplines li:nth-child(2) { font-stretch: 79%; }
.team__disciplines li:nth-child(3) { font-stretch: 83%; }
.team__disciplines li:nth-child(4) { font-stretch: 87%; }
.team__disciplines li:nth-child(5) { font-stretch: 92%; }
.team__disciplines li:nth-child(6) { font-stretch: 96%; }
.team__disciplines li:nth-child(7) { font-stretch: 100%; }

/* Misma rejilla que .team__head para que las dos columnas de la franja alineen */
.team__cols {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 1.25rem 4rem;
    align-items: start;
    margin-top: clamp(2rem, 1.5rem + 2vw, 3rem);
}

.team__cols p {
    max-width: 30rem;
}

.team__belief {
    font-size: var(--fs-md);
    line-height: 1.45;
    color: var(--white);
}

@media (max-width: 40rem) {
    .about__body,
    .team__head,
    .team__cols {
        grid-template-columns: minmax(0, 1fr);
    }
}

/* Áreas: cada una con su pieza del engrane; la rejilla 2×2 repite su posición */

.areas {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(3rem, 2rem + 3vw, 4.5rem) clamp(2rem, 1rem + 4vw, 5rem);
}

.area {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 34rem;
    color: var(--graphite);
}

.area__head {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.area__gear {
    flex: none;
    width: 4rem;
    height: 4rem;
    overflow: visible;
}

.area__gear-rest {
    fill: var(--lavender-line);
}

.area__gear-piece {
    fill: var(--ink);
    transform-box: fill-box;
    transform-origin: center;
}

/* Hacia dónde sale cada pieza (las mismas direcciones que en el hero) */
#area-consulting { --x: -42px; --y: -105px; }
#area-data       { --x: 105px; --y: -42px; }
#area-studio     { --x: 42px;  --y: 105px; }
#area-lab        { --x: -105px; --y: 42px; }

.area h3 {
    font-size: var(--fs-lg);
    line-height: 1.1;
    letter-spacing: -0.015em;
    color: var(--ink);
}

.area__brand {
    font-weight: 400;
}

.area__name {
    font-weight: 700;
}

.area__sub {
    margin-top: 0.375rem;
    font-weight: 500;
    color: var(--violet-deep);
}

.area__list {
    display: grid;
    gap: 0.5rem;
}

.area__list li {
    position: relative;
    padding-left: 1.25rem;
    color: var(--ink);
}

.area__list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.8em;
    width: 0.625rem;
    height: 2px;
    background: var(--violet-strong);
}

/* Al llegar desde el hero, la pieza del área se separa un instante y vuelve */
@media (prefers-reduced-motion: no-preference) {
    .area:target .area__gear-piece {
        animation: piece-nudge 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.15s;
    }

    @keyframes piece-nudge {
        40% {
            transform: translate(var(--x), var(--y));
        }
    }
}

@media (max-width: 52rem) {
    .area__gear {
        width: 3rem;
        height: 3rem;
    }
}

@media (max-width: 40rem) {
    .areas {
        grid-template-columns: minmax(0, 1fr);
    }
}

/* Desafíos (tabs): el problema en condensada y entre comillas (voz de quien
   nos busca); la respuesta a ancho completo; el engrane enciende las áreas */

.challenges {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 2rem clamp(2rem, 1rem + 4vw, 5rem);
    align-items: start;
}

.section__title:has(+ .challenges__hint) {
    margin-bottom: 0.75rem;
}

.challenges__hint {
    margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem);
    color: var(--graphite);
}

/* Los problemas se leen como filas pulsables: filete entre filas, flecha y fondo al señalar */
.challenges__list {
    display: grid;
    border-top: 1px solid var(--lavender-line);
}

.challenge-tab {
    position: relative;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 0;
    border-bottom: 1px solid var(--lavender-line);
    background: none;
    color: var(--graphite);
    font: 500 clamp(1.25rem, 0.9rem + 1vw, 1.5rem)/1.25 var(--font);
    font-stretch: 75%;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.challenge-tab[aria-selected="false"]::after {
    content: "→";
    position: absolute;
    right: 1rem;
    top: 0.75rem;
    color: var(--violet-strong);
    font-stretch: 100%;
    transition: transform 0.15s ease;
}

.challenge-tab:hover {
    background: #F6F5FD;
    color: var(--ink);
}

.challenge-tab:hover::after {
    transform: translateX(0.2em);
}

.challenge-tab[aria-selected="true"] {
    background: var(--lavender);
    color: var(--ink);
    font-weight: 700;
}

/* Comillas colgadas: la de apertura entra en el relleno para no mover el texto */
.challenge-tab[aria-selected="true"]::before,
.challenge-tab[aria-selected="true"]::after {
    color: var(--violet-strong);
}

.challenge-tab[aria-selected="true"]::before {
    content: "«";
    position: absolute;
    left: 1rem;
    transform: translateX(calc(-100% - 0.1em));
}

.challenge-tab[aria-selected="true"]::after {
    content: "»";
    margin-left: 0.1em;
}

.challenges__panels {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
}

.challenge-panel+.challenge-panel {
    margin-top: 3rem;
}

.challenge-panel[hidden] {
    display: none;
}

.challenge-panel__q {
    margin-bottom: 1rem;
    font-weight: 600;
    font-stretch: 75%;
    font-size: var(--fs-md);
}

.js .challenge-panel__q {
    display: none;
}

/* Engrane con las piezas de las áreas que intervienen */
.fit {
    position: relative;
    width: min(100%, 16rem);
    aspect-ratio: 1;
}

.fit__gear {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
}

.fit__rest,
.fit__piece {
    fill: var(--lavender-line);
}

.fit__piece {
    transform-box: fill-box;
    transform-origin: center;
}

.fit__piece--consulting { --x: -25px; --y: -63px; }
.fit__piece--data       { --x: 63px;  --y: -25px; }
.fit__piece--studio     { --x: 25px;  --y: 63px; }
.fit__piece--lab        { --x: -63px; --y: 25px; }

.fit--consulting .fit__piece--consulting,
.fit--data .fit__piece--data,
.fit--lab .fit__piece--lab,
.fit--studio .fit__piece--studio {
    fill: var(--ink);
}

.fit__label {
    position: absolute;
    font-size: var(--fs-xs);
    font-weight: 500;
    color: var(--graphite);
}

.fit__label--consulting { top: 0; left: 0; }
.fit__label--data       { top: 0; right: 0; }
.fit__label--lab        { bottom: 0; left: 0; }
.fit__label--studio     { bottom: 0; right: 0; }

.fit--consulting .fit__label--consulting,
.fit--data .fit__label--data,
.fit--lab .fit__label--lab,
.fit--studio .fit__label--studio {
    font-weight: 700;
    color: var(--ink);
}

.challenge-panel__a {
    max-width: 30rem;
    margin-top: 1.75rem;
    font-size: var(--fs-lg);
    font-weight: 600;
    line-height: 1.22;
    letter-spacing: -0.015em;
}

.challenge-panel__areas {
    margin-block: 0.875rem 1.75rem;
    color: var(--graphite);
}

.challenge-panel__areas a {
    color: var(--ink);
    font-weight: 600;
    text-decoration-color: var(--lavender-line);
    text-decoration-thickness: 2px;
    text-underline-offset: 0.25em;
}

.challenge-panel__areas a:hover {
    text-decoration-color: var(--violet-strong);
}

/* Al elegir un problema, sus piezas llegan desde afuera y encajan */
@media (prefers-reduced-motion: no-preference) {
    .fit--consulting .fit__piece--consulting,
    .fit--data .fit__piece--data,
    .fit--lab .fit__piece--lab,
    .fit--studio .fit__piece--studio {
        animation: piece-fit 0.55s cubic-bezier(0.3, 0, 0.2, 1) backwards;
    }

    .fit--data .fit__piece--data,
    .fit--lab .fit__piece--lab,
    .fit--studio .fit__piece--studio {
        animation-delay: 0.08s;
    }

    @keyframes piece-fit {
        from {
            transform: translate(var(--x), var(--y));
            fill: var(--lavender-line);
        }
    }
}

/* En móvil cada respuesta aparece justo debajo de su pregunta */
@media (max-width: 52rem) {
    .challenges {
        display: flex;
        flex-direction: column;
    }

    .challenges__list,
    .challenges__panels {
        display: contents;
    }

    .challenge-tab:nth-child(1) { order: 1; }
    .challenge-panel:nth-child(1) { order: 2; }
    .challenge-tab:nth-child(2) { order: 3; }
    .challenge-panel:nth-child(2) { order: 4; }
    .challenge-tab:nth-child(3) { order: 5; }
    .challenge-panel:nth-child(3) { order: 6; }
    .challenge-tab:nth-child(4) { order: 7; }
    .challenge-panel:nth-child(4) { order: 8; }
    .challenge-tab:nth-child(5) { order: 9; }
    .challenge-panel:nth-child(5) { order: 10; }
    .challenge-tab:nth-child(6) { order: 11; }
    .challenge-panel:nth-child(6) { order: 12; }

    .challenge-tab:first-child {
        border-top: 1px solid var(--lavender-line);
    }

    .challenge-panel,
    .challenge-panel+.challenge-panel {
        margin-block: 1.25rem 1.75rem;
    }

    .fit {
        width: min(100%, 14rem);
    }
}

/* Pasos (secuencia real, por eso numerada): escalera tipográfica.
   Cada paso entra un escalón más; el verbo manda, el número acompaña. */

.steps {
    display: grid;
    gap: clamp(1.25rem, 0.75rem + 1.25vw, 2rem);
    --stair: clamp(0rem, -5rem + 11vw, 5.5rem);
}

.step {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 28rem);
    column-gap: 0.75rem;
    align-items: baseline;
}

/* Sólo el número y el verbo bajan en diagonal; las descripciones quedan en una columna recta */
.step:nth-child(2) .step__num { margin-left: var(--stair); }
.step:nth-child(3) .step__num { margin-left: calc(var(--stair) * 2); }
.step:nth-child(4) .step__num { margin-left: calc(var(--stair) * 3); }

.step__num {
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--violet-deep);
}

.step h3 {
    font-size: clamp(2rem, 1rem + 3vw, 3.25rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.025em;
}

.step p {
    color: var(--graphite);
    padding-left: 1.5rem;
}

/* Sin ancho para la escalera: verbo grande y descripción debajo */
@media (max-width: 64rem) {
    .step {
        grid-template-columns: 2rem minmax(0, 1fr);
        row-gap: 0.5rem;
    }

    .step:nth-child(n) .step__num {
        margin-left: 0;
    }

    .step p {
        grid-column: 2;
        max-width: 34rem;
        padding-left: 0;
    }
}

/* Sectores: el nombre grande para que cada visitante se reconozca;
   el cierre abre paso al contacto */

.sectors {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(2rem, 1.5rem + 2vw, 3rem) clamp(2rem, 1rem + 4vw, 5rem);
}

.sector {
    max-width: 32rem;
}

.sector dt {
    font-size: var(--fs-lg);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.015em;
}

.sector dd {
    margin-top: 0.625rem;
    color: var(--graphite);
}

.sectors__close {
    max-width: 40rem;
    margin-top: clamp(3rem, 2rem + 3vw, 4.5rem);
    font-size: var(--fs-md);
    line-height: 1.5;
    color: var(--graphite);
}

.sectors__lead {
    display: block;
    margin-bottom: 0.5rem;
    font-size: var(--fs-xl);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.025em;
    color: var(--ink);
}

@media (max-width: 40rem) {
    .sectors {
        grid-template-columns: minmax(0, 1fr);
    }
}

/* Contacto */

.contact {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 3rem 4rem;
    align-items: start;
}

.contact__intro {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    color: var(--lavender);
}

.contact__intro .section__title {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.contact__intro p+p {
    margin-top: 0.75rem;
}

.contact__lead {
    font-size: var(--fs-md);
    color: var(--white);
}

.channels {
    display: grid;
    gap: 1.25rem;
    margin-top: 2.5rem;
}

.channels li {
    display: grid;
    gap: 0.125rem;
}

.channels__label {
    font-size: var(--fs-xs);
    color: var(--lavender-line);
}

.channels a {
    color: var(--white);
    font-size: var(--fs-md);
    font-weight: 600;
    text-decoration: none;
    overflow-wrap: break-word;
}

.channels a:hover {
    text-decoration: underline;
    text-decoration-color: var(--violet);
    text-underline-offset: 0.25em;
}

.contact-form {
    display: grid;
    gap: 1.25rem;
    padding: clamp(1.5rem, 1rem + 2vw, 2.5rem);
    background: var(--white);
    border-radius: var(--radius);
    color: var(--ink);
}

.contact-form :focus-visible {
    outline-color: var(--violet-strong);
}

.field {
    display: grid;
    gap: 0.375rem;
    margin: 0;
    padding: 0;
    border: 0;
    min-width: 0;
}

.field label,
.field legend {
    font-weight: 600;
    font-size: 0.9375rem;
}

.field legend {
    padding: 0;
    margin-bottom: 0.375rem;
}

.optional {
    font-weight: 400;
    color: var(--graphite);
}

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field textarea {
    width: 100%;
    min-height: 3rem;
    padding: 0.75rem 0.875rem;
    border: 1px solid #a9a6cf;
    border-radius: var(--radius-sm);
    background: var(--white);
    color: var(--ink);
    font: 400 var(--fs-base)/1.4 var(--font);
}

.field textarea {
    resize: vertical;
}

.field input:focus-visible,
.field textarea:focus-visible {
    outline-offset: 0;
    border-color: var(--violet-strong);
}

.field [aria-invalid="true"] {
    border-color: #b42318;
}

.field__error {
    font-size: var(--fs-xs);
    color: #b42318;
}

.field__error:empty {
    display: none;
}

.choice-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
}

.choice {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    cursor: pointer;
}

.choice input {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    accent-color: var(--violet-strong);
}

.choice--consent {
    align-items: flex-start;
    font-weight: 400;
    font-size: 0.9375rem;
    line-height: 1.45;
}

.choice--consent input {
    flex: none;
    margin-top: 0.1rem;
}

/* Tipo de apoyo: el visitante arma su engrane. Las casillas son el control;
   el engrane refleja las marcadas y sus piezas también se pueden pulsar. */

.picker__hint {
    margin-bottom: 0.75rem;
    font-size: var(--fs-xs);
    color: var(--graphite);
}

/* Casillas en columna junto a un engrane pequeño; con ancho suficiente,
   en 2×2 (misma posición que sus piezas) y el engrane a la derecha */
.contact-form {
    container-type: inline-size;
}

.picker__gear {
    display: grid;
    grid-template-columns: 5.5rem max-content;
    grid-template-areas:
        "gear consulting"
        "gear data"
        "gear lab"
        "gear studio";
    align-items: center;
    justify-content: start;
    gap: 0.5rem 1.5rem;
}

.picker__svg {
    grid-area: gear;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    overflow: visible;
}

@container (min-width: 24rem) {
    .picker__gear {
        grid-template-columns: max-content max-content 6rem;
        grid-template-areas:
            "consulting data gear"
            "lab studio gear";
        gap: 1rem 2rem;
    }
}

.picker__rest,
.picker__piece {
    fill: var(--lavender-line);
}

.picker__piece {
    cursor: pointer;
    transform-box: fill-box;
    transform-origin: center;
    transition: fill 0.15s ease;
}

.picker__piece--consulting { --x: -25px; --y: -63px; }
.picker__piece--data       { --x: 63px;  --y: -25px; }
.picker__piece--studio     { --x: 25px;  --y: 63px; }
.picker__piece--lab        { --x: -63px; --y: 25px; }

.picker__opt {
    font-size: 0.9375rem;
}

.picker__opt--consulting { grid-area: consulting; }
.picker__opt--data       { grid-area: data; }
.picker__opt--lab        { grid-area: lab; }
.picker__opt--studio     { grid-area: studio; }

/* Al señalar un área (pieza o nombre), su pieza se tiñe de violeta */
.picker__piece:hover,
.picker:has(.picker__opt--consulting:hover) .picker__piece--consulting,
.picker:has(.picker__opt--data:hover) .picker__piece--data,
.picker:has(.picker__opt--lab:hover) .picker__piece--lab,
.picker:has(.picker__opt--studio:hover) .picker__piece--studio {
    fill: var(--violet);
}

/* Marcada: la pieza queda en tinta */
.picker:has(#f-apoyo-consulting:checked) .picker__piece--consulting,
.picker:has(#f-apoyo-data:checked) .picker__piece--data,
.picker:has(#f-apoyo-lab:checked) .picker__piece--lab,
.picker:has(#f-apoyo-studio:checked) .picker__piece--studio {
    fill: var(--ink);
}

@media (prefers-reduced-motion: no-preference) {
    .picker:has(#f-apoyo-consulting:checked) .picker__piece--consulting,
    .picker:has(#f-apoyo-data:checked) .picker__piece--data,
    .picker:has(#f-apoyo-lab:checked) .picker__piece--lab,
    .picker:has(#f-apoyo-studio:checked) .picker__piece--studio {
        animation: picker-in 0.45s cubic-bezier(0.3, 0, 0.2, 1);
    }

    @keyframes picker-in {
        from {
            transform: translate(var(--x), var(--y));
        }
    }
}

.hp {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.form-status {
    font-size: 0.9375rem;
}

.form-status:empty {
    display: none;
}

.form-status.is-error {
    color: #b42318;
}

@media (max-width: 52rem) {
    .contact {
        grid-template-columns: 1fr;
    }

    .contact__intro {
        position: static;
    }
}

/* Footer */

.site-footer {
    background: var(--ink);
    color: var(--lavender-line);
    border-top: 1px solid rgb(194 200 250 / 0.2);
    padding-block: 2.5rem;
    font-size: var(--fs-xs);
}

.site-footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem 2rem;
}

.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
}

.site-footer a {
    color: var(--white);
    text-decoration: none;
}

.site-footer a:hover {
    text-decoration: underline;
}

/* Aviso de privacidad */

.privacy {
    width: min(40rem, calc(100% - 2rem));
    padding: 2rem;
    border: 0;
    border-radius: var(--radius);
    color: var(--ink);
}

.privacy::backdrop {
    background: rgb(37 32 79 / 0.6);
}

.privacy h2 {
    font-size: var(--fs-lg);
    margin-bottom: 1rem;
}

.privacy__pending {
    margin-bottom: 1.5rem;
    padding: 1rem;
    border: 2px dashed var(--violet);
    border-radius: var(--radius-sm);
    color: var(--graphite);
}

.channels a.channels__email {
    font-size: var(--fs-base);
}