/* ─── About hero ─────────────────────────────────────────────────────────────── */
.about-hero {
  padding: 6rem 0 5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.about-hero-inner { max-width: 700px; margin: 0 auto; }
.about-eyebrow {
  display: inline-block;
  font-size: 0.78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent);
  background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.2);
  border-radius: 999px; padding: 0.3rem 0.9rem; margin-bottom: 1.25rem;
}
.about-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 1.25rem;
}
.about-hero p {
  font-size: 1.1rem; line-height: 1.75; color: var(--text-muted); max-width: 580px; margin: 0 auto;
}

/* ─── Shared section wrapper ─────────────────────────────────────────────────── */
.about-section { padding: 5rem 0; border-bottom: 1px solid var(--border); }
.about-section-alt { background: var(--surface); }
.about-section-title {
  font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 0.75rem; text-align: center;
}
.about-section-sub {
  text-align: center; color: var(--text-muted); font-size: 1rem;
  max-width: 560px; margin: 0 auto 3rem;
}

/* ─── Mission 2-col grid ─────────────────────────────────────────────────────── */
.about-grid {
  display: grid; grid-template-columns: 1fr 280px; gap: 5rem; align-items: center;
}
.about-text h2 { font-size: 1.8rem; margin-bottom: 1.25rem; }
.about-text p { font-size: 0.95rem; line-height: 1.8; color: var(--text-muted); margin-bottom: 1rem; }
.about-text p:last-child { margin-bottom: 0; }

.about-stat-stack { display: flex; flex-direction: column; gap: 1.5rem; }
.about-stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem;
  text-align: center;
}
.about-stat-number {
  display: block; font-size: 2rem; font-weight: 800; color: var(--accent);
  letter-spacing: -0.03em; margin-bottom: 0.25rem;
}
.about-stat-label { font-size: 0.82rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; }

/* ─── Origin section ─────────────────────────────────────────────────────────── */
.about-origin {
  display: grid; grid-template-columns: 1fr 300px; gap: 5rem; align-items: start;
}
.about-origin-eyebrow { margin-bottom: 1.5rem; }
.about-origin-text h2 { font-size: 1.8rem; margin-bottom: 1.25rem; line-height: 1.3; }
.about-origin-text p { font-size: 0.95rem; line-height: 1.8; color: var(--text-muted); margin-bottom: 1rem; }
.about-origin-text p:last-child { margin-bottom: 0; }
.about-origin-text a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.about-origin-text a:hover { opacity: 0.8; }
.about-origin-aside { display: flex; flex-direction: column; gap: 1.5rem; }
.about-origin-quote {
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-lg); padding: 1.5rem; margin: 0;
}
.about-origin-quote p {
  font-size: 0.95rem; line-height: 1.75; color: var(--text);
  font-style: italic; margin: 0 0 1rem;
}
.about-origin-quote cite { font-size: 0.82rem; color: var(--text-faint); font-style: normal; }
.about-origin-tag {
  background: rgba(99,102,241,0.06); border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-lg); padding: 1.25rem 1.5rem;
}
.about-origin-tag-label {
  display: block; font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent); margin-bottom: 0.5rem;
}
.about-origin-tag-link {
  display: block; font-size: 0.95rem; font-weight: 600; color: var(--text);
  text-decoration: none; margin-bottom: 0.75rem;
}
.about-origin-tag-link:hover { color: var(--accent); }
.about-origin-tag p { font-size: 0.83rem; line-height: 1.65; color: var(--text-muted); margin: 0; }

/* ─── Principles grid ────────────────────────────────────────────────────────── */
.about-principles {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-top: 2.5rem;
}
.about-principle {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.75rem;
}
.about-principle-icon {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,0.1); border-radius: 10px; color: var(--accent); margin-bottom: 1rem;
}
.about-principle h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.about-principle p { font-size: 0.88rem; line-height: 1.7; color: var(--text-muted); }

/* ─── Use-case grid ──────────────────────────────────────────────────────────── */
.about-usecase-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 2.5rem;
}
.about-usecase-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem;
}
.about-usecase-card strong { display: block; font-size: 0.95rem; margin-bottom: 0.5rem; color: var(--text); }
.about-usecase-card p { font-size: 0.875rem; line-height: 1.7; color: var(--text-muted); margin: 0; }

/* ─── CTA section ────────────────────────────────────────────────────────────── */
.about-cta { padding: 6rem 0; text-align: center; }
.about-cta-inner { max-width: 560px; margin: 0 auto; }
.about-cta h2 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin-bottom: 0.75rem; }
.about-cta p { color: var(--text-muted); margin-bottom: 2rem; }
.about-cta-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-stat-stack { flex-direction: row; justify-content: center; }
  .about-stat { flex: 1; min-width: 140px; }
  .about-usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .about-origin { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 700px) {
  .about-principles { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .about-hero { padding: 4rem 0 3.5rem; }
  .about-section { padding: 3.5rem 0; }
  .about-stat-stack { flex-direction: column; }
  .about-usecase-grid { grid-template-columns: 1fr; }
}