/* ── Whitepaper page styles ───────────────────────────────── */

/* Callout block */
.wp-callout {
  background: var(--ink);
  color: var(--paper);
  padding: 2rem 2.2rem;
  border-left: 3px solid var(--gold);
}
.wpc-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.wpc-text {
  color: #d8cfb9;
  font-size: 1.05rem;
  line-height: 1.6;
}
.wpc-text strong { color: var(--paper); }

/* Three approaches grid */
.wp-approaches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
@media (max-width: 820px) { .wp-approaches { grid-template-columns: 1fr; } }
.wp-approach {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.2rem;
  padding: 2rem 1.6rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.wpa-num {
  font-family: var(--display);
  font-style: italic;
  font-size: 2rem;
  color: var(--gold);
  line-height: 1;
}
.wp-approach h3 {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--ink);
  margin-bottom: 0.6rem;
  line-height: 1.15;
}
.wp-approach p { font-size: 0.92rem; color: var(--ink-3); }
.wpa-verdict {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--rule);
}

/* Five functions */
.wp-five {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
@media (max-width: 960px) { .wp-five { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .wp-five { grid-template-columns: 1fr; } }
.wp-func {
  padding: 1.8rem 1.4rem;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  transition: background .25s;
}
.wp-func:hover { background: var(--paper-soft); }
.wpf-num {
  font-family: var(--display);
  font-style: italic;
  font-size: 2.4rem;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.6rem;
}
.wpf-name {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--ink);
  margin-bottom: 0.8rem;
  line-height: 1;
}
.wp-func p { font-size: 0.88rem; color: var(--ink-3); margin: 0; }

/* Architecture flow */
.wp-arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.waf-step {
  text-align: center;
  flex: 1;
  min-width: 120px;
}
.waf-icon {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper);
  border: 1px solid var(--paper);
  padding: 0.7rem 1.2rem;
  margin-bottom: 0.6rem;
}
.waf-gold {
  border-color: var(--gold);
  color: var(--gold);
}
.waf-desc {
  font-size: 0.78rem;
  color: #9a8e7c;
  max-width: 140px;
  margin: 0 auto;
  line-height: 1.35;
}
.waf-arrow {
  font-family: var(--mono);
  font-size: 1.2rem;
  color: var(--gold);
  padding: 0 0.6rem;
  flex-shrink: 0;
}
@media (max-width: 700px) {
  .wp-arch-flow { flex-direction: column; gap: 0.5rem; }
  .waf-arrow { transform: rotate(90deg); padding: 0.3rem 0; }
}
.wp-arch-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
@media (max-width: 700px) { .wp-arch-details { grid-template-columns: 1fr; } }
.wp-detail-h {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  font-weight: 500;
}

/* Walkthrough */
.wp-walkthrough {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
@media (max-width: 700px) { .wp-walkthrough { grid-template-columns: 1fr; } }
.wpw-step {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1.8rem 1.6rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.wpw-num {
  font-family: var(--display);
  font-style: italic;
  font-size: 2rem;
  color: var(--gold);
  line-height: 1;
}
.wpw-step h4 {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.wpw-step p { font-size: 0.92rem; color: var(--ink-3); margin: 0; }

/* What this is not */
.wp-nots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
@media (max-width: 700px) { .wp-nots { grid-template-columns: 1fr; gap: 2rem; } }
.wp-not h3 {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--ink);
  margin-bottom: 0.6rem;
}
.wp-not p { font-size: 0.94rem; color: var(--ink-3); }