/* slate-gilt device ledger: stacked rows, hairline gold, no form chrome */
:root {
  --slate-body: #334155;
  --gilt-line: #B8860B;
  --obsidian-bg: #0F172A;
  --snow-panel: #F8FAFC;
  --gilt-soft: #D4A017;
  --row-line: #CBD5E1;
  --mute-ink: #475569;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "IBM Plex Sans", "Segoe UI", "PingFang SC", sans-serif;
  background: var(--obsidian-bg);
  color: #E2E8F0;
  line-height: 1.72;
  font-size: 16px;
}

.dv-bar {
  background: #1E293B;
  border-bottom: 1px solid var(--gilt-line);
  padding: 0.85rem 5vw;
}
.dv-brand {
  color: var(--gilt-soft);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  text-transform: uppercase;
}
.dv-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.4rem;
  list-style: none;
  margin-top: 0.55rem;
}
.dv-links a {
  color: #CBD5E1;
  text-decoration: none;
  font-size: 0.84rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
}
.dv-links a:hover { color: var(--gilt-soft); border-bottom-color: var(--gilt-line); }

.dv-sheet {
  width: min(860px, 92vw);
  margin: 0 auto;
  padding: 1.8rem 0 2.6rem;
}
.dv-hero {
  border-top: 2px solid var(--gilt-line);
  border-bottom: 1px solid #334155;
  padding: 1.4rem 0 1.2rem;
}
.dv-hero h1 {
  font-size: clamp(1.4rem, 2.8vw, 1.95rem);
  line-height: 1.35;
  font-weight: 650;
  color: #F8FAFC;
}
.dv-note {
  margin-top: 0.7rem;
  color: var(--gilt-soft);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}
.dv-hero p { margin-top: 0.55rem; color: #94A3B8; max-width: 40em; }

.dv-sec { padding: 1.7rem 0; border-bottom: 1px solid #1E293B; }
.dv-sec h2 {
  font-size: 1.22rem;
  color: #F1F5F9;
  font-weight: 650;
  margin-bottom: 0.75rem;
}
.dv-sec p { margin-bottom: 0.7rem; color: #CBD5E1; }

.dv-stack { display: flex; flex-direction: column; gap: 0; margin-top: 0.9rem; }
.dv-row {
  display: grid;
  grid-template-columns: 2.2rem 1fr auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.85rem 0.2rem;
  border-bottom: 1px solid #334155;
  background: transparent;
}
.dv-row:hover { background: #1E293B; }
.dv-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gilt-line);
  justify-self: center;
}
.dv-row small { color: #94A3B8; font-size: 0.78rem; font-variant-numeric: tabular-nums; }
.dv-row strong { display: block; font-size: 0.95rem; color: #F8FAFC; font-family: ui-monospace, Consolas, monospace; }
.dv-row em { font-style: normal; color: #94A3B8; font-size: 0.8rem; }

.dv-cards {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-top: 0.8rem;
}
.dv-cards article {
  background: var(--snow-panel);
  color: var(--slate-body);
  padding: 0.95rem 1rem;
  border-left: 3px solid var(--gilt-line);
}
.dv-cards h3 { font-size: 0.98rem; margin-bottom: 0.35rem; color: #0F172A; }

.dv-ol { list-style: none; margin-top: 0.7rem; }
.dv-ol li {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: 0.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed #334155;
  color: #E2E8F0;
}
.dv-ol b { color: var(--gilt-soft); font-family: ui-monospace, Consolas, monospace; }

.dv-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--gilt-line);
  margin-top: 0.9rem;
}
.dv-split article { background: #1E293B; padding: 1rem 0.95rem; }
.dv-split h3 { color: var(--gilt-soft); font-size: 0.95rem; margin-bottom: 0.4rem; }

.dv-chart { width: 100%; border-collapse: collapse; margin-top: 0.8rem; font-size: 0.92rem; }
.dv-chart th, .dv-chart td {
  border-bottom: 1px solid #334155;
  padding: 0.6rem 0.3rem;
  text-align: left;
  vertical-align: top;
}
.dv-chart th { color: var(--gilt-soft); font-weight: 650; width: 34%; }

.dv-faq details {
  border-bottom: 1px solid #334155;
  padding: 0.75rem 0;
}
.dv-faq summary { cursor: pointer; color: #F8FAFC; font-weight: 650; }
.dv-faq p { margin-top: 0.4rem; color: #CBD5E1; }

.dv-end {
  background: #020617;
  color: #94A3B8;
  padding: 1.6rem 5vw 2rem;
  font-size: 0.88rem;
  border-top: 1px solid var(--gilt-line);
}
.dv-end p { margin-bottom: 0.5rem; max-width: 56em; }

@media (max-width: 720px) {
  .dv-split, .dv-row { grid-template-columns: 1fr; }
  .dv-row small { justify-self: start; }
}

.dv-cards svg { display:block; margin-bottom:0.4rem; }