/* ============================================================
   NO RULERS — American PSA poster
   Mobile-first. Off-white / ink / red. Anton display,
   Public Sans text, B&W photography. Mandatory chapter stops.
   ============================================================ */

:root {
  --bg: #f4f2ec;
  --bg-deep: #eae7dd;
  --ink: #16181d;
  --ink-soft: #565b66;
  --ink-faint: rgba(22, 24, 29, 0.14);
  --night: #16181d;
  --bone: #f4f2ec;
  --bone-dim: #a9adb6;
  --red: #c22d1e;
  --display: "Anton", "Arial Narrow", sans-serif;
  --sans: "Public Sans", -apple-system, system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scrollbar-color: #b9b4a5 var(--bg);
  /* hard stop at every chapter */
  scroll-snap-type: y mandatory;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--red); color: var(--bg); }

.paper-grain { display: none; }

/* ---------- fixed chrome ---------- */

.chrome-mark, .chrome-share, .chrome-pct {
  position: fixed; z-index: 50;
  font-family: var(--sans); font-weight: 700;
  font-size: 10px; letter-spacing: .18em;
  text-decoration: none;
  color: var(--bg);
  mix-blend-mode: difference;
}
.chrome-mark {
  top: 14px; left: 16px;
  font-family: var(--display); font-weight: 400;
  font-size: 15px; letter-spacing: .06em;
}
.chrome-share { top: 18px; right: 16px; }
.chrome-share:hover { text-decoration: underline; text-underline-offset: 4px; }
.chrome-pct { bottom: 14px; left: 16px; opacity: .75; }
.chrome-rail { display: none; }

.chrome-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60;
}
.chrome-progress span { display: block; height: 100%; width: 0%; background: var(--red); }

/* ---------- chapters: one screen each, hard stops ---------- */

main { position: relative; }

.ch {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 64px 20px 48px;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.ch-rule { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.ch-rule::after {
  content: ""; flex: 1; height: 2px;
  background-image:
    linear-gradient(90deg, transparent 42%, var(--red) 50%, transparent 58%),
    linear-gradient(var(--ink), var(--ink));
  background-size: 220% 100%, 100% 100%;
  background-repeat: no-repeat;
  animation: rule-dash 5.5s linear infinite;
}
.night .ch-rule::after {
  background-image:
    linear-gradient(90deg, transparent 42%, var(--red) 50%, transparent 58%),
    linear-gradient(rgba(244,242,236,.25), rgba(244,242,236,.25));
}
@keyframes rule-dash {
  from { background-position: -120% 0, 0 0; }
  to   { background-position: 220% 0, 0 0; }
}

.tag {
  display: inline-block;
  font-weight: 800; font-size: 9.5px; letter-spacing: .16em;
  color: var(--bg); background: var(--red);
  padding: 6px 9px 5px;
  white-space: nowrap;
}
.tag-night { color: var(--bg); }

.mono-note {
  font-weight: 700; font-size: 10px; letter-spacing: .16em;
  color: var(--ink-soft); text-transform: uppercase;
}
.night .mono-note { color: var(--bone-dim); }
.mono-note.red, .red { color: var(--red); }

/* ---------- night ---------- */

.night { background: var(--night); color: var(--bone); }
.night ::selection { background: var(--red); color: var(--bone); }
.dither, .dither-flip { display: none; }

/* ---------- type ---------- */

.display, .display-xl, .head, .display-final {
  font-family: var(--display); font-weight: 400;
  text-transform: uppercase;
  letter-spacing: .005em;
}
.display { font-size: clamp(44px, 12.5vw, 120px); line-height: .96; margin-bottom: 22px; }
.display em, .display-final em { font-style: normal; color: var(--red); }
.display em:not(.red) {
  color: var(--ink);
  text-decoration: line-through;
  text-decoration-color: var(--red);
  text-decoration-thickness: .07em;
}
.display-xl { font-size: clamp(52px, 15vw, 170px); line-height: .95; margin-bottom: 10px; }
.display-final { font-size: clamp(38px, 10.5vw, 64px); text-align: center; margin: 22px auto 14px; max-width: 900px; }
.head { font-size: clamp(30px, 8.5vw, 64px); line-height: .98; margin-bottom: 18px; }
.head-center { text-align: center; margin-left: auto; margin-right: auto; max-width: 820px; margin-bottom: 26px; }

.lede {
  font-size: clamp(16px, 4.2vw, 21px); font-weight: 500;
  color: var(--ink-soft); max-width: 520px;
}

.prose { max-width: 560px; }
.prose p { margin-bottom: 14px; font-size: clamp(15px, 3.9vw, 18px); color: #33373f; }
.prose p em { font-style: italic; }
.prose p strong { color: var(--ink); background: linear-gradient(transparent 62%, rgba(194,45,30,.22) 62%); }
.prose-night p { color: var(--bone-dim); }
.prose-night p em, .prose-night p strong { color: var(--bone); background: none; }
.prose-center { margin-left: auto; margin-right: auto; text-align: center; }

.emphasis {
  font-family: var(--display); text-transform: uppercase;
  font-size: clamp(19px, 5vw, 30px) !important;
  line-height: 1.15; letter-spacing: .01em;
  color: var(--bone) !important;
}

/* ---------- cover: pure type poster ---------- */

.cover { padding-top: 12svh; }
.cover-grid { display: block; width: 100%; max-width: 1100px; margin: 0 auto; }
.cover-text .tag { margin-bottom: 22px; }
.cover-plate { display: none; }
.cover-cue { display: flex; align-items: center; gap: 12px; margin-top: 34px; }
.cue-line {
  width: 2px; height: 44px;
  background: linear-gradient(180deg, var(--red), transparent);
  animation: cue-drop 2s ease-in-out infinite;
}
@keyframes cue-drop {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  35% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1) translateY(12px); opacity: 0; }
}

/* ---------- photos ---------- */

.plate { min-width: 0; }
.plate-frame {
  position: relative; overflow: hidden;
  border-top: 4px solid var(--red);
  background: var(--ink);
}
.plate-frame img {
  display: block; width: 100%; height: 100%;
  object-fit: cover;
}
.kb img {
  animation: kenburns 26s ease-in-out infinite alternate;
  will-change: transform;
}
@keyframes kenburns {
  from { transform: scale(1.02) translate3d(0, 0, 0); }
  to   { transform: scale(1.1) translate3d(-1.6%, 1.8%, 0); }
}
.plate-cap {
  margin-top: 8px;
  font-weight: 700; font-size: 9px; letter-spacing: .14em;
  line-height: 1.7; text-transform: uppercase;
  color: var(--ink-soft);
}
.plate-cap i { font-style: normal; }
.cap-night { color: var(--bone-dim); }
.plate-wide { max-width: 1100px; margin: 0 auto; width: 100%; }
.plate-wide .plate-frame { aspect-ratio: 16 / 9; }

/* ---------- splits: photo on top (mobile), side-by-side (desktop) ---------- */

.split { display: flex; flex-direction: column; gap: 18px; max-width: 1200px; margin: 0 auto; width: 100%; }
.split .plate, .split-rev .plate { order: -1; }
.split .plate-frame { aspect-ratio: 16 / 10; }
.split-text { max-width: 560px; }

/* ---------- the word (night) ---------- */

.word-stage { max-width: 900px; margin: 0 auto; text-align: center; }
.etym { margin-bottom: 22px; display: block; }
.word-claim {
  font-family: var(--display); text-transform: uppercase;
  font-size: clamp(26px, 8vw, 56px);
  line-height: 1.02; margin-bottom: 16px;
}
.word-claim em { font-style: normal; color: var(--red); }
.word-claim .strike {
  text-decoration: line-through;
  text-decoration-color: var(--red);
  text-decoration-thickness: .07em;
}
.word-body {
  max-width: 620px; margin: 0 auto 24px;
  color: var(--bone-dim); font-size: clamp(14.5px, 3.8vw, 17px);
}
.word-body em { color: var(--bone); font-style: italic; }

.defs {
  display: grid; grid-template-columns: 1fr; gap: 0;
  border-top: 1px solid rgba(244,242,236,.25);
  border-bottom: 1px solid rgba(244,242,236,.25);
  margin-bottom: 14px; text-align: left;
}
.def { padding: 16px 4px; }
.def h3 { margin-bottom: 6px; font-size: 10px; }
.def p { font-size: clamp(16px, 4.4vw, 22px); font-weight: 600; line-height: 1.3; color: var(--bone); }
.def p em { font-style: normal; color: var(--red); }
.def-divider { height: 1px; background: rgba(244,242,236,.25); }
.defs-note { color: var(--bone-dim); margin-bottom: 22px; font-size: 13.5px; }

.quote {
  max-width: 680px; margin: 0 auto;
  padding-left: 16px; border-left: 3px solid var(--red);
  text-align: left;
}
.quote p {
  font-style: italic; font-weight: 500;
  font-size: clamp(14.5px, 3.9vw, 19px);
  line-height: 1.45; color: var(--bone); margin-bottom: 10px;
}
.quote cite {
  font-style: normal; font-weight: 700;
  font-size: 9.5px; letter-spacing: .14em; color: var(--bone-dim);
  text-transform: uppercase;
}
.quote-gloss {
  font-style: normal !important; font-weight: 700 !important;
  font-size: 10px !important; letter-spacing: .12em;
  line-height: 1.7 !important; color: var(--bone-dim) !important;
  margin: 12px 0 0 !important; text-transform: uppercase;
}

.src {
  font-weight: 800; font-size: .64em; letter-spacing: .1em;
  white-space: nowrap; color: var(--red); text-decoration: none;
  border-bottom: 1.5px solid rgba(194,45,30,.4);
  text-transform: uppercase;
}
.src:hover { border-bottom-color: var(--red); }
.night .src { color: #e05743; }

/* ---------- two lists ---------- */

.card-text { max-width: 640px; margin: 0 auto; width: 100%; }
.card-text .head { text-align: left; }

.ledger { display: grid; grid-template-columns: 1fr; max-width: 680px; margin: 0 auto; width: 100%; }
.ledger-col { border: 3px solid var(--ink); padding: 16px 16px 12px; background: #faf8f3; }
.ledger-col.ledger-b { border-color: var(--red); }
.ledger-col h3 { margin-bottom: 8px; font-size: 10px; line-height: 1.7; }
.ledger-list { list-style: none; }
.ledger-list li {
  font-weight: 600;
  font-size: clamp(15px, 4vw, 19px); line-height: 1.3;
  padding: 9px 0 9px 26px;
  border-bottom: 1px solid var(--ink-faint);
  position: relative;
}
.ledger-list li:last-child { border-bottom: none; }
.ledger-list li::before { content: "—"; position: absolute; left: 0; color: var(--ink-soft); }
.ledger-list-x li { font-weight: 500; font-size: clamp(13px, 3.5vw, 16px); line-height: 1.4; padding: 7px 0 7px 24px; }
.ledger-list-x li::before { content: "✗"; color: var(--red); font-weight: 800; }
.ledger-note { margin-top: 10px; font-size: 12px; color: var(--ink-soft); font-style: italic; }
.ledger-punch {
  font-family: var(--display); text-transform: uppercase;
  font-size: clamp(22px, 6.4vw, 44px); line-height: 1.05;
  text-align: center; max-width: 880px; margin: 28px auto 0;
}
.ledger-punch em { font-style: normal; }
.ledger-punch .red {
  color: var(--red);
  background-image: linear-gradient(rgba(194,45,30,.22), rgba(194,45,30,.22));
  background-repeat: no-repeat;
  background-position: 0 86%;
  background-size: 0% 12%;
  animation: sweep 3.4s ease-in-out infinite;
}
@keyframes sweep {
  0% { background-size: 0% 12%; background-position: 0 86%; }
  45% { background-size: 100% 12%; background-position: 0 86%; }
  55% { background-size: 100% 12%; background-position: 0 86%; }
  100% { background-size: 0% 12%; background-position: 100% 86%; }
}
.ledger-after {
  text-align: center; font-size: 12.5px; color: var(--ink-soft);
  max-width: 520px; margin: 12px auto 0;
}

/* ---------- receipt ---------- */

.triptych { max-width: 1100px; margin: 0 auto 20px; width: 100%; }
/* reserve the plate's box before the lazy image lands — without this the
   chapter grows ~390px mid-scroll and long anchor jumps land short */
.triptych .plate-frame { aspect-ratio: 3 / 2; }
.counter-kick { text-align: center; display: block; margin-bottom: 4px; }
.counter-block { text-align: center; margin: 12px 0 14px; }
.counter-num {
  font-family: var(--display);
  font-size: clamp(44px, 13vw, 130px);
  line-height: 1; color: var(--red);
  font-variant-numeric: tabular-nums;
  margin-bottom: 12px;
}
.counter-label {
  max-width: 620px; margin: 0 auto;
  font-size: 12.5px; line-height: 1.6; color: var(--bone-dim);
}

/* ---------- principles ---------- */

.principles { list-style: none; max-width: 1150px; margin: 0 auto; width: 100%; }
.principle {
  display: flex; gap: 14px; align-items: baseline;
  padding: 14px 0;
  border-top: 2px solid var(--ink);
}
.p-num {
  font-family: var(--display);
  font-size: 22px; color: var(--red);
  flex: 0 0 34px; text-align: right;
}
.principle h3 {
  font-family: var(--display); font-weight: 400; text-transform: uppercase;
  font-size: clamp(17px, 4.6vw, 26px); line-height: 1.05;
  margin-bottom: 5px;
}
.principle p { font-size: 13.5px; line-height: 1.5; color: #454a54; max-width: 430px; }

/* ---------- objections ---------- */

.qa-list { max-width: 860px; margin: 0 auto; width: 100%; border-top: 3px solid var(--ink); }
.qa { border-bottom: 1px solid var(--ink-faint); }
.qa summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: baseline; gap: 12px;
  padding: 15px 2px;
  -webkit-tap-highlight-color: transparent;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary:hover .qa-q { color: var(--red); }
.qa-no { font-weight: 800; font-size: 10px; letter-spacing: .1em; color: var(--red); flex: 0 0 38px; }
.qa-q {
  font-family: var(--display); font-weight: 400; text-transform: uppercase;
  font-size: clamp(16px, 4.6vw, 26px); line-height: 1.08; flex: 1;
  transition: color .2s ease;
}
.qa-plus { position: relative; flex: 0 0 14px; height: 14px; align-self: center; }
.qa-plus::before, .qa-plus::after {
  content: ""; position: absolute; background: var(--ink);
  left: 0; top: 6px; width: 14px; height: 2px;
  transition: transform .25s ease;
}
.qa-plus::after { transform: rotate(90deg); }
.qa[open] .qa-plus::after { transform: rotate(0deg); }
.qa[open] .qa-plus::before, .qa[open] .qa-plus::after { background: var(--red); }
.qa-a { padding: 0 2px 18px 50px; }
.qa-a p { font-size: 14px; line-height: 1.6; color: #3b4048; max-width: 640px; margin-bottom: 10px; }
.qa-a p:last-child { margin-bottom: 0; }
.qa-a em { font-style: italic; color: var(--ink); }

/* ---------- order without a throne ---------- */

.sim-frame { aspect-ratio: 4 / 3; background: var(--bg-deep); border-top: 4px solid var(--red); }
#murmuration { display: block; width: 100%; height: 100%; }

.proof-row { max-width: 1150px; margin: 22px auto 0; width: 100%; border-top: 3px solid var(--ink); }
.proof { padding: 14px 0; border-bottom: 1px solid var(--ink-faint); }
.proof:last-child { border-bottom: none; }
.proof h4 { margin-bottom: 5px; color: var(--red); font-size: 10px; }
.proof p { font-size: 13.5px; line-height: 1.55; color: #454a54; }
.proof em { color: var(--ink); font-style: italic; }

/* ---------- finale ---------- */

#final { text-align: center; }
#final .ch-rule { text-align: left; }
#final .plate-wide .plate-frame { aspect-ratio: 3 / 2; }
#final .plate-wide img { object-position: 50% 22%; }
@media (min-width: 900px) {
  #final .plate-wide { max-width: 620px; }
  .triptych { max-width: 780px; }
  #final .plate-wide .plate-frame { aspect-ratio: 16 / 8; }
  .ledger { max-width: 600px; }
  .ledger-list li { padding: 10px 0 10px 28px; }
  .head-center { margin-bottom: 18px; font-size: clamp(30px, 5vw, 54px); }
}

.start-strip { max-width: 720px; margin: 26px auto 0; border-top: 3px solid var(--red); padding-top: 14px; text-align: left; }
.start-strip h3 { margin-bottom: 4px; }
.start-list { list-style: none; }
.start-list li {
  font-weight: 600;
  font-size: clamp(15px, 4vw, 19px); line-height: 1.3;
  padding: 9px 0 9px 24px;
  border-bottom: 1px solid var(--ink-faint);
  position: relative;
}
.start-list li::before {
  content: "→"; position: absolute; left: 0; color: var(--red); font-weight: 800;
  animation: nudge 1.8s ease-in-out infinite;
}
@keyframes nudge { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(4px); } }

.form-block {
  max-width: 720px; margin: 26px auto 0; width: 100%;
  border: 3px solid var(--ink);
  background: #faf8f3;
}
.form-head { border-bottom: 1px solid var(--ink-faint); padding: 10px; display: flex; justify-content: center; }
.cta-zone { padding: 22px 16px 26px; }

.pledge-btn {
  font-family: var(--sans); font-weight: 800;
  font-size: 12px; letter-spacing: .14em;
  color: var(--bg); background: var(--ink);
  border: none; padding: 16px 26px;
  cursor: pointer; text-transform: uppercase;
  transition: background .2s ease;
  width: 100%;
}
.pledge-btn:hover { background: var(--red); }

.quiz { max-width: 560px; margin: 0 auto; }
.quiz-q { font-weight: 600; font-size: clamp(16px, 4.4vw, 22px); line-height: 1.35; margin-bottom: 18px; min-height: 2.6em; }
.quiz-opts { display: flex; flex-direction: column; gap: 8px; }
.quiz-opt {
  font-family: var(--sans); font-weight: 800;
  font-size: 11px; letter-spacing: .1em;
  color: var(--ink); background: transparent;
  padding: 13px 16px;
  border: 2px solid var(--ink);
  cursor: pointer; text-transform: uppercase;
  transition: background .15s ease, color .15s ease;
}
.quiz-opt:hover { background: var(--ink); color: var(--bg); }
.quiz-step { margin-top: 14px; }

.quiz-result { margin-top: 6px; }
.qr-line {
  font-family: var(--display); text-transform: uppercase;
  font-size: clamp(22px, 6vw, 34px);
  color: var(--red); margin-bottom: 8px;
}
.qr-sub { font-size: 14px; color: var(--ink-soft); margin-bottom: 16px; }
.qr-sub strong { color: var(--ink); }
.pledge-small.is-done { background: var(--ink); color: var(--bg); cursor: default; }
.pledge-note { margin-top: 12px; font-size: 8.5px; }

.share-row { margin-top: 26px; }
.share-prompt { display: block; font-size: 13px; color: var(--ink-soft); margin-bottom: 12px; }
.share-btns { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.share-btn {
  font-family: var(--sans); font-weight: 800;
  font-size: 10.5px; letter-spacing: .12em;
  color: var(--ink); text-decoration: none;
  padding: 12px 16px;
  border: 2px solid var(--ink);
  background: transparent; cursor: pointer;
  text-transform: uppercase;
  transition: background .15s ease, color .15s ease;
}
.share-btn:hover { background: var(--ink); color: var(--bg); }

/* ---------- books ---------- */

.books-intro { text-align: center; font-size: 14px; color: var(--ink-soft); max-width: 480px; margin: -10px auto 20px; }
.books { list-style: none; max-width: 900px; margin: 0 auto; width: 100%; }
.book {
  display: flex; gap: 14px; align-items: center; justify-content: space-between;
  padding: 13px 0;
  border-top: 2px solid var(--ink);
}
.book-main h3 {
  font-family: var(--display); font-weight: 400; text-transform: uppercase;
  font-size: clamp(17px, 4.6vw, 25px); line-height: 1.05;
}
.book-by { font-weight: 800; font-size: 9.5px; letter-spacing: .14em; color: var(--red); margin: 3px 0 4px; }
.free-badge {
  background: var(--ink); color: var(--bg);
  padding: 2px 6px 1px; margin-left: 6px;
  font-size: 8.5px; letter-spacing: .12em;
}
.book-main p:last-child { font-size: 13px; line-height: 1.5; color: #454a54; max-width: 520px; }
.book-get {
  flex: 0 0 auto;
  font-weight: 800; font-size: 10px; letter-spacing: .1em;
  color: var(--ink); text-decoration: none;
  border: 2px solid var(--ink);
  padding: 10px 12px;
  white-space: nowrap;
  transition: background .15s ease, color .15s ease;
}
.book-get:hover { background: var(--red); border-color: var(--red); color: var(--bg); }
.book-actions { display: flex; flex-direction: column; gap: 6px; flex: 0 0 auto; }
.book-alt { border-color: var(--ink-faint); color: var(--ink-soft); font-size: 9px; padding: 8px 10px; text-align: center; }

/* ---------- spread the word ---------- */

.spread-grid { display: flex; flex-direction: column; gap: 20px; max-width: 1100px; margin: 0 auto; width: 100%; }
.sticker { max-width: 340px; margin: 0 auto; }
.sticker img { display: block; width: 100%; height: auto; box-shadow: 0 14px 40px rgba(22,24,29,.22); }
.spread-text { text-align: center; }
.spread-text .prose { margin: 0 auto; }
.spread-btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.spread-btn { text-decoration: none; display: inline-block; width: auto; }
.spread-note { margin-top: 14px; font-size: 8.5px; }

@media (min-width: 900px) {
  .spread-grid { flex-direction: row; align-items: center; gap: 5vw; }
  .sticker { flex: 0 0 380px; max-width: 380px; }
  .spread-text { text-align: left; flex: 1; }
  .spread-text .prose { margin: 0; }
  .spread-btns { justify-content: flex-start; }
  .book { padding: 18px 0; }
}

/* ---------- footer ---------- */

.site-foot {
  padding: 40px 20px 70px;
  scroll-snap-align: start;
}
.foot-rule { height: 3px; background: var(--ink); margin-bottom: 26px; }
.foot-inner { max-width: 860px; margin: 0 auto; }
.foot-note { font-weight: 600; font-size: clamp(15px, 4vw, 20px); line-height: 1.45; margin-bottom: 26px; max-width: 700px; }
.sources h5 { margin-bottom: 12px; color: var(--red); }
.sources ul { list-style: none; }
.sources li { font-size: 12.5px; color: #454a54; padding: 7px 0; border-top: 1px solid var(--ink-faint); }
.sources li em { color: var(--ink); }
.standards { margin-top: 20px; font-size: 10.5px; line-height: 1.7; letter-spacing: .04em; color: var(--ink-soft); }

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--red); outline-offset: 2px;
}

/* ---------- reveals ---------- */

.reveal { opacity: 1; transform: none; }
body.gsap-on .reveal { opacity: 0; transform: translateY(22px); }

/* ---------- short screens (SE-class phones, short laptops) ---------- */

@media (max-height: 700px) {
  .ch { padding-top: 56px; padding-bottom: 36px; }
  .split .plate-frame { aspect-ratio: 2.1 / 1; }
  .head { font-size: clamp(24px, 7vw, 40px); margin-bottom: 12px; }
  .prose p { font-size: 14px; margin-bottom: 10px; }
  .ledger-list li { padding: 7px 0 7px 24px; }
  .ledger-list-x li { font-size: 12px; padding: 5px 0 5px 20px; }
  #lists-b .head { margin-bottom: 8px; }
  .ch-rule { margin-bottom: 14px; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; scroll-snap-type: none; }
  .cue-line, .ch-rule::after, .kb img, .start-list li::before, .ledger-punch .red { animation: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  * { transition-duration: .01ms !important; }
}

/* ============================================================
   DESKTOP ≥ 900px
   ============================================================ */

@media (min-width: 900px) {
  .ch { padding: 84px 6vw 60px; }
  .ch-rule { margin-bottom: 34px; }
  .tag { font-size: 10.5px; padding: 7px 11px 6px; }
  .chrome-mark { top: 20px; left: 24px; font-size: 17px; }
  .chrome-share { top: 24px; right: 24px; font-size: 11px; }
  .chrome-pct { bottom: 18px; left: 24px; font-size: 11px; }

  .cover { padding-top: 84px; }
  .cover-cue { margin-top: 48px; }

  .split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4vw; align-items: center; }
  .split .plate, .split-rev .plate { order: 0; }
  .split-rev .plate { order: 1; }
  .split .plate-frame { aspect-ratio: 4 / 3; }

  .defs { grid-template-columns: 1fr 1px 1fr; }
  .def { padding: 26px 28px; }
  .def-divider { height: auto; width: 1px; }

  .ledger-col { padding: 22px 24px 16px; }
  .ledger-list li { padding: 12px 0 12px 30px; }

  .principles { display: grid; grid-template-columns: 1fr 1fr; column-gap: 5vw; }
  .principle { padding: 22px 0; gap: 18px; }
  .p-num { font-size: 28px; flex-basis: 42px; }

  .proof-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3vw; }
  .proof { border-bottom: none; padding: 18px 0 0; }

  .quiz-opts { flex-direction: row; justify-content: center; }
  .pledge-btn { width: auto; }
  .cta-zone { padding: 32px 28px 36px; }
  .form-block, .start-strip { margin-top: 34px; }

  .qa summary { padding: 20px 4px; gap: 20px; }
  .qa-no { flex-basis: 48px; font-size: 11px; }
  .qa-a { padding: 0 4px 24px 68px; }
  .qa-a p { font-size: 15px; }

  .site-foot { padding: 60px 6vw 80px; }
}

[hidden] { display: none !important; }