:root {
  --fl-bg:      #e8f4ff;
  --fl-border:  #b0d4f8;
  --fl-text:    #185890;
  --fl-icon-bg: #e8f4ff;
}

.app-hero{border-bottom:1px solid var(--color-border);padding:1.25rem 1.5rem 1.1rem}
.app-hero--sky{background:var(--fl-bg);border-bottom-color:var(--fl-border)}
.app-hero__inner{margin:0 auto}
.app-hero__title{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;color:var(--fl-text);letter-spacing:-.02em;margin:0 0 .5rem;line-height:1.2}
.app-hero__desc{font-size:.9rem;color:var(--color-text-secondary);max-width:660px;line-height:1.6;margin:0 0 .85rem}
.app-hero__chips{display:flex;flex-wrap:wrap;gap:.35rem}
.hero-chip{display:inline-flex;align-items:center;padding:.22rem .65rem;font-size:.72rem;font-weight:700;background:var(--color-surface);border:1.5px solid var(--fl-border);border-radius:var(--radius-full);color:var(--fl-text);white-space:nowrap}

.app-wrap {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem 1rem 3rem;
}
.pane-in { width: 320px; flex-shrink: 0; display: flex; flex-direction: column; gap: 1rem; }
.pane-out { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--fl-border);
  border-radius: var(--radius-xl);
  padding: 1rem 1.125rem;
}
.card-title {
  font-size: .7rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--fl-text); margin: 0 0 .75rem;
}

.field { margin-bottom: .75rem; }
.field:last-child { margin-bottom: 0; }

label.lbl {
  display: block; font-size: .72rem; font-weight: 600;
  color: var(--color-text-muted); margin-bottom: .28rem;
}

.slider-row { display: flex; align-items: center; gap: .5rem; }
.slider-row input[type=range] { flex: 1; accent-color: var(--fl-text); height: 4px; }
.slider-val { font-size: .8rem; font-weight: 700; color: var(--fl-text); min-width: 40px; text-align: right; }

/* Results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .6rem;
}
.result-cell {
  background: var(--fl-bg); border: 1px solid var(--fl-border);
  border-radius: var(--radius-md); padding: .6rem .75rem;
}
.result-cell.wide { grid-column: span 2; }
.result-lbl {
  font-size: .62rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--color-text-muted); margin-bottom: .2rem;
  display: flex; align-items: center; gap: .25rem;
}
.result-val {
  font-size: 1.8rem; font-weight: 800; color: var(--fl-text); line-height: 1.2;
}
.result-val.sm { font-size: 1rem; }

.caveat-text {
  font-size: .75rem; color: var(--color-text-muted); line-height: 1.55;
  margin: .75rem 0 0;
}

@media (max-width: 720px) {
  .app-wrap { flex-direction: column; }
  .pane-in { width: 100%; }
}