/* ============================================================
   N2 · Sobre n2 — identidad de la empresa
   Dos columnas: titular fijo (sticky) a la izquierda y narrativa
   + principios a la derecha; debajo, una franja de métricas
   cualitativas. El revelado por scroll vive en about.js.
   Depende de los tokens de brand.css.
   ============================================================ */

.about {
  background: var(--bg);
  padding: clamp(80px, 12vw, 180px) 0;
  scroll-margin-top: 90px;
}

/* ---- Rejilla de dos columnas ---- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}

/* ---- Columna izquierda fija ---- */
.about-aside {
  position: sticky;
  top: clamp(96px, 14vh, 140px);
  align-self: start;
}
.about-title {
  margin-top: 16px;
  max-width: 10ch;
}
.about-em {
  font-family: "Instrument Serif", serif;
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

/* ---- Columna derecha ---- */
.about-lead {
  margin: 0;
  max-width: 30ch;
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1.35;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.about-text {
  margin-top: clamp(16px, 2vh, 24px);
  max-width: 54ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.7;
  color: var(--fg-dim);
}
.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: clamp(24px, 3vh, 36px);
}
.about-list li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  color: var(--fg-dim);
}
.about-list li::before {
  content: "—";
  font-family: "Geist Mono", ui-monospace, monospace;
  color: var(--accent);
  flex: 0 0 auto;
}

/* ---- Franja de métricas ---- */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  margin-top: clamp(56px, 8vw, 96px);
}
.about-stat {
  padding: clamp(20px, 3vw, 32px) clamp(16px, 2vw, 24px);
  border-left: 1px solid var(--line);
}
.about-stat:first-child {
  border-left: none;
  padding-left: 0;
}
.about-stat dt {
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--fg);
}
.about-stat dd {
  margin: 8px 0 0;
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-faint);
}

/* ============================================================
   Sobre n2 · responsive — una columna, sin sticky, métricas 2×2
   ============================================================ */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: clamp(24px, 6vw, 36px);
  }
  .about-aside {
    position: static;
    top: auto;
  }
  .about-title {
    max-width: none;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
    border-top: none;
  }
  /* Con 2 columnas usamos border-top por celda para evitar líneas sueltas */
  .about-stat {
    border-left: none;
    padding-left: 0;
    padding-right: clamp(12px, 4vw, 20px);
    border-top: 1px solid var(--line);
  }
  .about-stat:first-child {
    padding-left: 0;
  }
}