/* ═══ PF-FEATURES — full feature index (S550) ═══════════ */

.fx-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* ── HERO ────────────────────────────────────────────── */
.fx-hero {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
}
.fx-wordmark {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--viz-ink-deep);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: .8rem;
  margin-bottom: 20px;
}
.fx-wordmark .eco-sub-e { color: var(--cat-blue); }
.fx-wordmark .eco-sub-c { color: var(--cat-green); }
.fx-wordmark .eco-sub-o { color: var(--c-white-01); }
.fx-h1 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 5vw, 2.6rem);
  color: var(--color-text);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 0 0 16px;
}
.fx-lead {
  font-size: .95rem;
  color: var(--color-text-mid);
  line-height: 1.7;
  max-width: 62ch;
  margin: 0;
}

/* ── GROUPS ──────────────────────────────────────────── */
.fx-group { margin-bottom: 48px; }
.fx-group-h2 {
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  color: var(--color-text);
  line-height: 1.25;
  letter-spacing: -.01em;
  margin: 0 0 8px;
}
.fx-group-lead {
  font-size: .85rem;
  color: var(--color-text-dim);
  line-height: 1.6;
  margin: 0 0 22px;
}

/* ── CARDS ───────────────────────────────────────────── */
.fx-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 620px) { .fx-grid { grid-template-columns: 1fr; } }
.fx-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px 18px;
  text-decoration: none;
}
.fx-card:hover { border-color: var(--color-accent-c); }
.fx-icon {
  font-size: 1.3rem;
  line-height: 1;
  margin-bottom: 10px;
}
.fx-name {
  font-size: .9rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 7px;
}
.fx-desc {
  font-size: .8rem;
  color: var(--color-text-mid);
  line-height: 1.55;
}

/* ── BACK + FOOTER ───────────────────────────────────── */
.fx-back {
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}
.fx-back-link {
  display: inline-block;
  font-size: .88rem;
  font-weight: 700;
  color: var(--color-accent-c);
  text-decoration: none;
  margin-bottom: 6px;
}
.fx-back-link:hover { text-decoration: underline; }
.fx-back-note {
  display: block;
  font-size: .78rem;
  color: var(--color-text-dim);
  line-height: 1.6;
}
.fx-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-size: .75rem;
  color: var(--color-text-dim);
}
.fx-footer-links a {
  color: var(--color-text-mid);
  text-decoration: none;
}
.fx-footer-links a:hover { text-decoration: underline; }