```css
/* =========================================================
   GRUPO LAS LETRAS
   QUIÉNES SOMOS
   ESTILOS PRINCIPALES
========================================================= */


/* =========================================================
   HERO
========================================================= */

.page-hero {
    position: relative;

    min-height: 76vh;

    display: flex;
    align-items: center;

    padding: 130px 0 140px;

    overflow: hidden;

    background:
        radial-gradient(
            circle at 82% 22%,
            rgba(168, 138, 82, 0.13),
            transparent 30%
        ),
        radial-gradient(
            circle at 12% 85%,
            rgba(168, 138, 82, 0.05),
            transparent 28%
        ),
        var(--color-fondo);
}


/* Línea decorativa */

.page-hero::before {
    content: "";

    position: absolute;

    top: 12%;
    right: 10%;

    width: 1px;
    height: 76%;

    background:
        linear-gradient(
            to bottom,
            transparent,
            var(--color-dorado),
            transparent
        );

    opacity: 0.35;

    pointer-events: none;
}


/* Círculo decorativo */

.page-hero::after {
    content: "";

    position: absolute;

    width: 520px;
    height: 520px;

    right: -240px;
    bottom: -280px;

    border: 1px solid rgba(168, 138, 82, 0.20);

    border-radius: 50%;

    pointer-events: none;
}


/* Contenedor */

.page-hero .container {
    position: relative;

    z-index: 2;

    width: min(92%, 1100px);

    margin: 0 auto;
}


/* Etiqueta */

.page-hero .small-title {
    display: inline-flex;
    align-items: center;
    gap: 14px;

    margin-bottom: 30px;

    color: var(--color-dorado);

    font-size: 11px;
    font-weight: 600;

    letter-spacing: 4px;

    text-transform: uppercase;
}


.page-hero .small-title::before {
    content: "";

    width: 38px;
    height: 1px;

    background: var(--color-dorado);

    opacity: 0.7;
}


/* Título */

.page-hero h1 {
    max-width: 950px;

    margin: 0 0 34px;

    font-size: clamp(3.2rem, 7vw, 6.8rem);

    line-height: 0.92;

    letter-spacing: -2px;

    overflow-wrap: break-word;
}


/* Texto */

.page-hero p {
    max-width: 700px;

    margin: 0;

    font-size: 17px;

    line-height: 1.9;

    opacity: 0.82;
}


/* =========================================================
   SECCIONES
========================================================= */

.about-page,
.two-column-section,
.audience-grid,
.mission-content,
.vision-section,
.values-grid {
    position: relative;
}


/* =========================================================
   ENCABEZADOS
========================================================= */

.about-page .section-heading,
.section > .container > .section-heading {
    max-width: 900px;

    margin-bottom: 55px;
}


.section-heading > span {
    display: block;

    margin-bottom: 14px;

    color: var(--color-dorado);

    font-size: 11px;
    font-weight: 600;

    letter-spacing: 3px;

    text-transform: uppercase;
}


.section-heading h2 {
    max-width: 850px;

    margin: 0;

    font-size: clamp(2.2rem, 4vw, 4rem);

    line-height: 1.05;

    letter-spacing: -0.8px;
}


.section-heading p {
    max-width: 720px;

    margin-top: 25px;

    font-size: 16px;

    line-height: 1.85;

    opacity: 0.78;
}


/* =========================================================
   PRESENTACIÓN
========================================================= */

.about-page {
    max-width: 1050px;
}


.about-introduction {
    position: relative;

    max-width: 850px;

    margin: 0 auto;

    padding-left: 55px;
}


.about-introduction::before {
    content: "";

    position: absolute;

    left: 0;
    top: 8px;
    bottom: 8px;

    width: 1px;

    background:
        linear-gradient(
            to bottom,
            var(--color-dorado),
            rgba(168, 138, 82, 0.05)
        );

    opacity: 0.7;
}


.about-introduction p {
    margin-bottom: 24px;

    font-size: 16px;

    line-height: 1.9;

    opacity: 0.82;
}


.about-introduction p:last-child {
    margin-bottom: 0;
}


.about-introduction .lead {
    margin-bottom: 32px;

    font-size: 21px;

    line-height: 1.7;

    opacity: 1;
}


/* =========================================================
   HISTORIA
========================================================= */

.section-light {
    position: relative;

    overflow: hidden;
}


.section-light::before {
    content: "";

    position: absolute;

    top: 0;
    left: 7%;

    width: 1px;
    height: 100%;

    background:
        linear-gradient(
            to bottom,
            transparent,
            rgba(168, 138, 82, 0.16),
            transparent
        );

    pointer-events: none;
}


.two-column-section {
    display: grid;

    grid-template-columns:
        minmax(280px, 0.9fr)
        minmax(320px, 1.1fr);

    gap: 100px;

    align-items: start;
}


.two-column-section .section-heading {
    position: sticky;

    top: 100px;

    margin-bottom: 0;
}


.two-column-section .section-heading h2 {
    font-size: clamp(2.2rem, 4vw, 3.8rem);

    line-height: 1.05;
}


.two-column-section .section-content {
    padding-top: 5px;
}


.two-column-section .section-content p {
    margin-bottom: 25px;

    font-size: 16px;

    line-height: 1.9;

    opacity: 0.82;
}


.two-column-section .section-content p:last-child {
    margin-bottom: 0;
}


/* =========================================================
   DOS CAMINOS
========================================================= */

.audience-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 28px;

    margin-top: 55px;
}


.audience-card {
    position: relative;

    min-height: 390px;

    display: flex;
    flex-direction: column;

    padding: 45px;

    border: 1px solid rgba(168, 138, 82, 0.20);

    background:
        linear-gradient(
            145deg,
            rgba(168, 138, 82, 0.045),
            transparent 60%
        );

    transition:
        transform 0.35s ease,
        border-color 0.35s ease,
        box-shadow 0.35s ease;
}


.audience-card::before {
    content: "";

    position: absolute;

    top: 0;
    left: 0;

    width: 55px;
    height: 1px;

    background: var(--color-dorado);

    opacity: 0.75;
}


.audience-card:hover {
    transform: translateY(-6px);

    border-color: rgba(168, 138, 82, 0.48);

    box-shadow:
        0 18px 45px rgba(0, 0, 0, 0.06);
}


.audience-icon {
    width: 58px;
    height: 58px;

    display: flex;
    align-items: center;
    justify-content: center;

    margin-bottom: 30px;

    border: 1px solid rgba(168, 138, 82, 0.35);

    font-size: 24px;

    background: rgba(168, 138, 82, 0.05);
}


.audience-card > span {
    display: block;

    margin-bottom: 14px;

    color: var(--color-dorado);

    font-size: 10px;
    font-weight: 600;

    letter-spacing: 3px;

    text-transform: uppercase;
}


.audience-card h3 {
    max-width: 440px;

    margin-bottom: 20px;

    font-size: clamp(1.6rem, 2.4vw, 2.25rem);

    line-height: 1.1;

    letter-spacing: -0.4px;
}


.audience-card p {
    margin-bottom: 30px;

    font-size: 15px;

    line-height: 1.8;

    opacity: 0.78;
}


.audience-card .text-link {
    margin-top: auto;

    color: inherit;

    font-size: 13px;
    font-weight: 600;

    letter-spacing: 0.4px;

    text-decoration: none;

    transition: color 0.25s ease;
}


.audience-card .text-link:hover {
    color: var(--color-dorado);
}


/* =========================================================
   MISIÓN
   TARJETA PRINCIPAL
========================================================= */

.mission-section {
    position: relative;

    padding: 120px 0;

    overflow: hidden;

    background:
        linear-gradient(
            to bottom,
            var(--color-fondo),
            rgba(168, 138, 82, 0.035),
            var(--color-fondo)
        );
}


.mission-content {
    max-width: 1050px;

    margin: 0 auto;

    padding: 75px 85px;

    text-align: center;

    border: 1px solid rgba(168, 138, 82, 0.38);

    background:
        radial-gradient(
            circle at 50% 0%,
            rgba(168, 138, 82, 0.10),
            transparent 48%
        ),
        var(--color-fondo);

    box-shadow:
        0 25px 70px rgba(0, 0, 0, 0.055);
}


/* Marco interior */

.mission-content::before {
    content: "";

    position: absolute;

    inset: 10px;

    border: 1px solid rgba(168, 138, 82, 0.10);

    pointer-events: none;
}


/* Línea superior */

.mission-content::after {
    content: "";

    position: absolute;

    top: -1px;
    left: 50%;

    width: 110px;
    height: 2px;

    background: var(--color-dorado);

    transform: translateX(-50%);
}


/* Icono */

.mission-icon {
    position: relative;
    z-index: 2;

    width: 62px;
    height: 62px;

    display: flex;
    align-items: center;
    justify-content: center;

    margin: 0 auto 28px;

    border: 1px solid rgba(168, 138, 82, 0.45);

    color: var(--color-dorado);

    font-size: 22px;

    background: var(--color-fondo);
}


/* Etiqueta */

.mission-content > span {
    position: relative;
    z-index: 2;

    display: block;

    margin-bottom: 24px;

    color: var(--color-dorado);

    font-size: 11px;
    font-weight: 600;

    letter-spacing: 4px;

    text-transform: uppercase;
}


/* Título */

.mission-content h2 {
    position: relative;
    z-index: 2;

    max-width: 850px;

    margin: 0 auto 38px;

    font-size: clamp(2.5rem, 5vw, 4.7rem);

    line-height: 0.98;

    letter-spacing: -1.2px;
}


/* Texto */

.mission-content p {
    position: relative;
    z-index: 2;

    max-width: 760px;

    margin: 0 auto 20px;

    font-size: 16px;

    line-height: 1.9;

    opacity: 0.82;
}


.mission-content p:last-child {
    margin-bottom: 0;

    margin-top: 28px;

    padding-top: 28px;

    border-top: 1px solid rgba(168, 138, 82, 0.20);

    font-family: Georgia, "Times New Roman", serif;

    font-size: 18px;

    font-style: italic;

    opacity: 0.95;
}


/* =========================================================
   VISIÓN
   TARJETA COMPLEMENTARIA
========================================================= */

.vision-section {
    display: grid;

    grid-template-columns:
        minmax(0, 1.15fr)
        minmax(300px, 0.85fr);

    max-width: 1150px;

    margin: 0 auto;

    border: 1px solid rgba(168, 138, 82, 0.30);

    overflow: hidden;

    background: var(--color-fondo);

    box-shadow:
        0 25px 70px rgba(0, 0, 0, 0.045);
}


/* Texto */

.vision-text {
    position: relative;

    padding: 70px 70px 75px;
}


/* Línea lateral */

.vision-text::before {
    content: "";

    position: absolute;

    left: 0;
    top: 55px;
    bottom: 55px;

    width: 2px;

    background:
        linear-gradient(
            to bottom,
            transparent,
            var(--color-dorado),
            transparent
        );

    opacity: 0.7;
}


/* Etiqueta */

.vision-text > span {
    display: block;

    margin-bottom: 20px;

    color: var(--color-dorado);

    font-size: 11px;
    font-weight: 600;

    letter-spacing: 4px;

    text-transform: uppercase;
}


/* Título */

.vision-text h2 {
    max-width: 700px;

    margin-bottom: 35px;

    font-size: clamp(2.3rem, 4vw, 4rem);

    line-height: 1.02;

    letter-spacing: -0.9px;
}


/* Párrafos */

.vision-text p {
    max-width: 720px;

    margin-bottom: 22px;

    font-size: 15px;

    line-height: 1.9;

    opacity: 0.80;
}


.vision-text p:last-child {
    margin-bottom: 0;
}


/* =========================================================
   DESTACADO DE VISIÓN
========================================================= */

.vision-highlight {
    position: relative;

    display: flex;

    align-items: center;
    justify-content: center;

    min-height: 100%;

    padding: 65px 50px;

    border-left: 1px solid rgba(168, 138, 82, 0.20);

    background:
        radial-gradient(
            circle at 50% 45%,
            rgba(168, 138, 82, 0.11),
            transparent 65%
        );
}


/* Círculo ornamental */

.vision-highlight::after {
    content: "";

    position: absolute;

    width: 280px;
    height: 280px;

    top: 50%;
    left: 50%;

    border: 1px solid rgba(168, 138, 82, 0.13);

    border-radius: 50%;

    transform: translate(-50%, -50%);

    pointer-events: none;
}


/* Comillas */

.vision-highlight::before {
    content: "“";

    position: absolute;

    top: 25px;
    left: 30px;

    z-index: 1;

    color: var(--color-dorado);

    font-family: Georgia, "Times New Roman", serif;

    font-size: 90px;

    line-height: 1;

    opacity: 0.25;
}


/* Cita */

.vision-highlight blockquote {
    position: relative;

    z-index: 2;

    margin: 0;

    font-family: Georgia, "Times New Roman", serif;

    font-size: clamp(1.45rem, 2.5vw, 2.15rem);

    line-height: 1.4;

    font-style: italic;

    text-align: center;
}


/* Identificador */

.vision-section::after {
    content: "NUESTRO FUTURO";

    position: absolute;

    top: 18px;
    right: 25px;

    color: var(--color-dorado);

    font-size: 9px;
    font-weight: 600;

    letter-spacing: 3px;

    opacity: 0.55;
}


/* =========================================================
   VALORES
========================================================= */

.values-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    margin-top: 55px;

    border-top: 1px solid rgba(168, 138, 82, 0.20);

    border-left: 1px solid rgba(168, 138, 82, 0.20);
}


.value-card {
    min-height: 230px;

    padding: 38px 35px;

    border-right: 1px solid rgba(168, 138, 82, 0.20);

    border-bottom: 1px solid rgba(168, 138, 82, 0.20);

    transition:
        background 0.3s ease,
        transform 0.3s ease;
}


.value-card:hover {
    background: rgba(168, 138, 82, 0.045);
}


.value-card h3 {
    position: relative;

    margin-bottom: 20px;

    padding-top: 17px;

    font-size: 1.35rem;

    line-height: 1.2;
}


.value-card h3::before {
    content: "";

    position: absolute;

    top: 0;
    left: 0;

    width: 28px;
    height: 1px;

    background: var(--color-dorado);
}


.value-card p {
    margin: 0;

    font-size: 14px;

    line-height: 1.8;

    opacity: 0.75;
}


/* =========================================================
   CTA FINAL
========================================================= */

.about-cta {
    position: relative;

    padding: 130px 0;

    overflow: hidden;

    text-align: center;

    background:
        radial-gradient(
            circle at 50% 100%,
            rgba(168, 138, 82, 0.12),
            transparent 45%
        ),
        var(--color-fondo);
}


.about-cta::before,
.about-cta::after {
    content: "";

    position: absolute;

    border: 1px solid rgba(168, 138, 82, 0.15);

    border-radius: 50%;

    pointer-events: none;
}


.about-cta::before {
    width: 420px;
    height: 420px;

    left: -260px;
    top: 20%;
}


.about-cta::after {
    width: 600px;
    height: 600px;

    right: -400px;
    bottom: -420px;
}


.about-cta .container {
    position: relative;

    z-index: 2;

    max-width: 900px;
}


.about-cta > .container > span {
    display: block;

    margin-bottom: 25px;

    color: var(--color-dorado);

    font-size: 11px;
    font-weight: 600;

    letter-spacing: 4px;

    text-transform: uppercase;
}


.about-cta h2 {
    max-width: 850px;

    margin: 0 auto 30px;

    font-size: clamp(2.7rem, 5.5vw, 5rem);

    line-height: 0.98;

    letter-spacing: -1.2px;
}


.about-cta p {
    max-width: 650px;

    margin: 0 auto 40px;

    font-size: 16px;

    line-height: 1.8;

    opacity: 0.78;
}


.cta-buttons {
    display: flex;

    justify-content: center;
    align-items: center;

    gap: 15px;

    flex-wrap: wrap;
}


/* =========================================================
   DARK MODE
========================================================= */

body.dark-theme .audience-card:hover {
    box-shadow:
        0 18px 45px rgba(0, 0, 0, 0.25);
}


body.dark-theme .value-card:hover {
    background: rgba(168, 138, 82, 0.07);
}


body.dark-theme .mission-content,
body.dark-theme .vision-section {
    box-shadow:
        0 25px 70px rgba(0, 0, 0, 0.22);
}


body.dark-theme .mission-content {
    background:
        radial-gradient(
            circle at 50% 0%,
            rgba(168, 138, 82, 0.12),
            transparent 50%
        ),
        var(--color-fondo);
}


body.dark-theme .vision-highlight {
    background:
        radial-gradient(
            circle at 50% 45%,
            rgba(168, 138, 82, 0.12),
            transparent 65%
        );
}
```