/* =========================================================================
   QPN Catalyst — Home "How it works" + Response-mode addresses.
   Sits directly under the hero. Closes the two comprehension gaps the
   current page leaves open:
     1. WHAT you do   — you Bcc ONE shared address on an intro you're already
                        sending (you don't get your own address).
     2. HOW you get it — email agree@ once to accept terms; it replies with
                        the three Bcc addresses.
   Plus the three response modes (silent / ack / evidence) — identical
   storage, differing only in what returns to your inbox — laid out on the
   system's existing discreet→provable axis.

   Reuses native classes: .qpn-section, .qpn-uc / .qpn-uc--row, .qpn-uc-grid,
   .qpn-uc-axis, .qpn-uc__here-tag. Tokens only; the single raw value is the
   system gold tint rgba(138,107,46,*) from --qpn-accent (#8A6B2E).

   Load order: … → qpn-cards.css → qpn-email-mock.css → qpn-hero-rail.css →
   THIS FILE.
   ========================================================================= */

.qpn-howto {
  background: var(--qpn-page);
  border-top: var(--qpn-rule-hair) solid var(--qpn-rule);
  padding-bottom: 72px;
}

/* Lead line under the section title — the one-sentence answer, up front. */
.qpn-howto__lead {
  font-family: var(--qpn-font-display);
  font-size: var(--qpn-fs-lede);
  line-height: var(--qpn-lh-lede);
  color: var(--qpn-ink-muted);
  max-width: 60ch;
  margin: var(--qpn-sp-3) 0 var(--qpn-sp-6);
}
.qpn-howto__lead strong {
  color: var(--qpn-ink);
  font-weight: 600;
}

/* Inline address chip — a mono, gold, non-breaking email address in prose. */
.qpn-addr {
  font-family: var(--qpn-font-mono);
  font-size: 0.9em;
  letter-spacing: var(--qpn-tracking-mono);
  color: var(--qpn-accent);
  font-weight: 500;
  white-space: nowrap;
}

/* ── Step cards (reuse .qpn-uc--row) ───────────────────────────────────── */
/* The step ordinal sits at the right of the rail (margin-left:auto from
   .qpn-uc--row). Make it a touch more legible than the micro default. */
.qpn-step .qpn-uc__ordinal {
  font-size: var(--qpn-fs-body-sm);
  color: var(--qpn-accent);
}
.qpn-step .qpn-uc__name { font-size: 18px; }
.qpn-step .qpn-uc__body { color: var(--qpn-ink-muted); }
.qpn-step .qpn-uc__body strong {
  color: var(--qpn-ink);
  font-weight: 600;
}

/* ── Response-mode block ───────────────────────────────────────────────── */
.qpn-modes {
  max-width: var(--qpn-w-marketing);
  margin: var(--qpn-sp-8) auto 0;
  padding: 0 var(--qpn-sp-7);
}

.qpn-modes__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--qpn-sp-5);
  flex-wrap: wrap;
}
.qpn-modes__title {
  font-family: var(--qpn-font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--qpn-ink);
  margin: 0;
}
.qpn-modes__note {
  font-family: var(--qpn-font-body);
  font-size: var(--qpn-fs-body-sm);
  line-height: 1.55;
  color: var(--qpn-ink-faint);
  margin: 0;
  max-width: 46ch;
}

/* Mode card — single column: tag / name / address, hairline, then payload. */
.qpn-mode {
  display: flex;
  flex-direction: column;
  background: var(--qpn-surface);
  border: var(--qpn-uc-border);
  border-radius: 6px;
  padding: var(--qpn-sp-6);
  height: 100%;
}
/* Silent is the privacy default — echo the system's gold "here/default"
   highlight (matches .qpn-uc--here and the hero Bcc row). */
.qpn-mode--default {
  border-color: var(--qpn-accent);
  background: rgba(138, 107, 46, 0.04);
}
.qpn-mode .qpn-uc__here-tag { align-self: flex-start; }

.qpn-mode__name {
  font-family: var(--qpn-font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.005em;
  line-height: var(--qpn-lh-tight);
  color: var(--qpn-ink);
  margin: 0;
}
.qpn-mode__addr {
  font-family: var(--qpn-font-mono);
  font-size: var(--qpn-fs-body-sm);
  letter-spacing: var(--qpn-tracking-mono);
  color: var(--qpn-accent);
  margin-top: 7px;
  white-space: nowrap;
}
.qpn-mode__back {
  margin-top: var(--qpn-sp-5);
  padding-top: var(--qpn-sp-4);
  border-top: var(--qpn-rule-hair) solid var(--qpn-rule-faint);
  font-family: var(--qpn-font-body);
  font-size: var(--qpn-fs-body);
  line-height: var(--qpn-lh-body);
  color: var(--qpn-ink-muted);
}
.qpn-mode__back strong {
  color: var(--qpn-ink);
  font-weight: 600;
}

/* Foot note under the modes grid — the "all identical storage" reassurance
   + where the addresses come from. */
.qpn-modes__foot {
  font-family: var(--qpn-font-body);
  font-size: var(--qpn-fs-body-sm);
  line-height: 1.6;
  color: var(--qpn-ink-muted);
  margin: var(--qpn-sp-5) 0 0;
  padding-left: var(--qpn-sp-3);
  border-left: 2px solid var(--qpn-rule);
  max-width: 70ch;
}

@media (max-width: 720px) {
  .qpn-modes { padding: 0 var(--qpn-sp-4); }
  .qpn-terms { padding: 0 var(--qpn-sp-4); }
  .qpn-terms__inner { grid-template-columns: 1fr; }
}

/* Keep the discreet/provable axis labels on a single line each. */
.qpn-modes .qpn-uc-axis span { white-space: nowrap; }

/* ── Terms notice ──────────────────────────────────────────────────────── */
/* Implicit agreement, placed AFTER the visitor understands the action — not
   as a pre-comprehension gate. Uses the system notice tokens so it's clearly
   the Submission Terms notice, but contained + rounded + calm rather than the
   full-bleed banner that was creating friction at the top of the page. */
.qpn-terms {
  max-width: var(--qpn-w-marketing);
  margin: var(--qpn-sp-7) auto 0;
  padding: 0 var(--qpn-sp-7);
}
.qpn-terms__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--qpn-sp-2) var(--qpn-sp-4);
  align-items: baseline;
  background: var(--qpn-notice-bg);
  border: 1px solid var(--qpn-notice-border);
  border-radius: 6px;
  padding: var(--qpn-sp-4) var(--qpn-sp-5);
}
.qpn-terms__tag {
  font-family: var(--qpn-font-body);
  font-size: var(--qpn-fs-micro);
  letter-spacing: var(--qpn-tracking-label);
  text-transform: uppercase;
  font-weight: 700;
  color: var(--qpn-notice-text);
  white-space: nowrap;
}
.qpn-terms__text {
  font-family: var(--qpn-font-body);
  font-size: var(--qpn-fs-body-sm);
  line-height: 1.55;
  color: var(--qpn-notice-text);
  margin: 0;
}
.qpn-terms__text a {
  color: var(--qpn-notice-text);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.qpn-terms__opt {
  margin: 8px 0 0;
  font-size: var(--qpn-fs-body-sm);
  line-height: 1.55;
  color: var(--qpn-notice-text);
  opacity: 0.85;
}
/* Mono addresses inside the amber note read in the note's own ink, not gold. */
.qpn-terms__opt .qpn-addr { color: var(--qpn-notice-text); }

/* ── Start contributing — slim gateless closer ─────────────────────────── */
/* The three response modes already appear as cards in "How it works"; this
   final CTA names the addresses inline (via .qpn-addr) instead of repeating
   the cards, and keeps agree@ as an optional text link. Reuses .qpn-section /
   __eyebrow / __title / __dek. */
.qpn-start__opt {
  margin: var(--qpn-sp-6) 0 0;
  font-family: var(--qpn-font-body);
  font-size: var(--qpn-fs-body-sm);
  line-height: 1.6;
  color: var(--qpn-ink-muted);
}
.qpn-start__opt a {
  color: var(--qpn-ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  white-space: nowrap;
}
.qpn-start__opt-note { color: var(--qpn-ink-faint); }