/* LEARNING-DISCOSCM-UNIT-SELECTION-GUARD-STYLE-2026-07-17-V3 */

.notation-page {
  background:
    radial-gradient(circle at 84% 4%, rgba(231, 104, 53, 0.13), transparent 25rem),
    var(--paper);
}

.notation-page .topbar {
  background: rgba(247, 244, 236, 0.94);
}

.notation-page .brand-mark {
  background: var(--orange);
  font-style: normal;
  font-weight: 800;
}

.guard-hero {
  position: relative;
  overflow: hidden;
  color: white;
  background:
    linear-gradient(118deg, rgba(12, 20, 38, 0.98), rgba(22, 31, 55, 0.96)),
    var(--dark);
}

.guard-hero::before,
.guard-hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
}

.guard-hero::before {
  width: 440px;
  height: 440px;
  top: -260px;
  right: 7%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow:
    0 0 0 72px rgba(255, 255, 255, 0.025),
    0 0 0 144px rgba(255, 255, 255, 0.018);
}

.guard-hero::after {
  width: 320px;
  height: 320px;
  left: -180px;
  bottom: -245px;
  background: rgba(231, 104, 53, 0.2);
  filter: blur(2px);
}

.guard-hero-grid {
  position: relative;
  z-index: 1;
  min-height: 590px;
  padding-block: 94px 88px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(290px, 0.65fr);
  align-items: center;
  gap: 76px;
}

.guard-copy .eyebrow {
  color: #ff956a;
}

.guard-copy h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(64px, 8vw, 108px);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

.guard-copy h1 em {
  color: #ff956a;
  font-style: normal;
}

.guard-deck {
  max-width: 760px;
  margin: 31px 0 0;
  color: #cbd1dd;
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.68;
}

.guard-hero .button.ghost {
  color: #eef1f8;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.21);
}

.guard-hero .button.primary {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 12px 28px rgba(231, 104, 53, 0.23);
}

.red-line {
  position: relative;
  padding: 29px 30px 28px;
  text-align: center;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 20px;
  box-shadow: 0 28px 65px rgba(0, 0, 0, 0.25);
}

.red-line::before,
.red-line::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: 50%;
  width: 145px;
  height: 4px;
  background: #ff7950;
  border-radius: 99px;
  transform-origin: center;
}

.red-line::before {
  top: 44%;
  transform: translateX(-50%) rotate(28deg);
}

.red-line::after {
  top: 44%;
  transform: translateX(-50%) rotate(-28deg);
}

.red-line-label {
  display: block;
  color: #ff9b75;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.forbidden-symbol {
  display: block;
  margin-block: 19px 15px;
  font-family: var(--serif);
  font-size: 78px;
  font-weight: 500;
  line-height: 1;
}

.red-line > p {
  max-width: 250px;
  margin: 0 auto;
  color: #bfc6d6;
  font-size: 14px;
}

.replacement {
  margin-top: 25px;
  padding: 13px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink);
  background: #fff7f2;
  border-radius: 11px;
}

.replacement span {
  color: #9b5a42;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.replacement b {
  font-family: var(--serif);
  font-size: 21px;
}

.contract-band {
  padding-block: 58px 62px;
  color: white;
  background: var(--blue);
}

.band-label {
  margin: 0;
  color: #cbd8ff;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.contract-equation {
  margin-top: 12px;
  overflow-x: auto;
  font-family: var(--serif);
  font-size: clamp(15px, 1.8vw, 21px);
}

.index-rule {
  margin-top: 35px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  gap: 20px;
}

.index-ok,
.index-no {
  padding: 21px 24px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 13px;
}

.index-rule span {
  display: block;
  color: #cedaff;
  font-size: 11px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.index-rule strong {
  display: block;
  margin-top: 7px;
  font-family: var(--serif);
  font-size: 21px;
}

.index-rule p {
  margin: 5px 0 0;
  color: #c8d4f8;
  font-size: 12px;
}

.index-arrow {
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 28px;
}

.reading-layout {
  padding-block: 88px 112px;
  display: grid;
  grid-template-columns: 210px minmax(0, 790px);
  justify-content: center;
  align-items: start;
  gap: 86px;
}

.reading-rail {
  position: sticky;
  top: 105px;
  padding-top: 7px;
}

.reading-rail > p {
  margin: 0 0 13px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.reading-rail > a {
  padding: 10px 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: #596174;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  font-weight: 650;
  text-decoration: none;
}

.reading-rail > a:hover {
  color: var(--blue);
}

.reading-rail > a span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 10px;
}

.rail-reminder {
  margin-top: 25px;
  padding: 17px 18px;
  background: var(--orange-soft);
  border-left: 3px solid var(--orange);
}

.rail-reminder strong {
  color: #a54b2c;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.rail-reminder p {
  margin: 8px 0 0;
  color: #704737;
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.7;
}

.reading-column {
  min-width: 0;
}

.chapter {
  padding: 0 0 87px;
  scroll-margin-top: 100px;
}

.chapter + .chapter {
  padding-top: 83px;
  border-top: 1px solid var(--line);
}

.chapter-heading {
  display: grid;
  grid-template-columns: 53px minmax(0, 1fr);
  gap: 21px;
  align-items: start;
}

.chapter-heading > span {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--ink);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 12px;
}

.chapter-heading p {
  margin: 1px 0 4px;
  color: var(--orange);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.chapter-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(31px, 4vw, 47px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.18;
}

.chapter > .lead {
  margin: 29px 0 25px;
  color: #3e475a;
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.75;
}

.chapter > p {
  color: #444d60;
}

.definition-card,
.belief-definition,
.mixture-card {
  margin-block: 25px;
  padding: 28px 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.card-kicker,
.belief-definition > span {
  display: block;
  margin: 0;
  color: var(--blue);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.display-math,
.belief-definition > div,
.mixture-card {
  overflow-x: auto;
}

.definition-card .display-math {
  font-size: 20px;
}

.definition-card > p:last-child {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.world-instance {
  margin-block: 26px;
  padding: 22px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  background: var(--paper-deep);
  border-radius: 15px;
}

.world-instance > div {
  min-width: 0;
  padding: 15px;
  text-align: center;
  background: var(--white);
  border-radius: 11px;
}

.world-instance span {
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.world-instance strong {
  display: block;
  overflow-x: auto;
  font-size: 13px;
}

.world-instance > i {
  color: var(--blue);
  font-size: 11px;
  font-style: normal;
  font-weight: 750;
  text-align: center;
}

.precision-note,
.replica-note {
  margin-top: 24px;
  padding: 21px 24px;
  color: #5d493b;
  background: var(--orange-soft);
  border-left: 4px solid var(--orange);
}

.precision-note strong,
.replica-note strong {
  color: #9d4829;
  font-family: var(--serif);
  font-size: 17px;
}

.precision-note p,
.replica-note p {
  margin: 5px 0 0;
  font-size: 13px;
}

.belief-definition {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
}

.belief-definition > span {
  color: #9fb6ff;
}

.belief-definition > div {
  font-size: 18px;
}

.three-objects {
  margin-block: 25px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 13px;
}

.three-objects article {
  padding: 20px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 13px;
}

.three-objects span {
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.three-objects strong {
  display: block;
  margin-top: 7px;
  color: var(--blue);
  font-family: var(--serif);
  font-size: 28px;
}

.three-objects p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.5;
}

.wrong-right {
  margin-block: 27px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.wrong-right > div {
  padding: 22px 24px;
  border-radius: 14px;
}

.wrong-right .wrong {
  background: #fff0ec;
  border: 1px solid rgba(194, 70, 35, 0.2);
}

.wrong-right .right {
  background: var(--green-soft);
  border: 1px solid rgba(21, 131, 109, 0.2);
}

.wrong-right span {
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.wrong-right .wrong span { color: #b4482a; }
.wrong-right .right span { color: var(--green); }

.wrong-right strong {
  display: block;
  margin-block: 4px;
  overflow-x: auto;
  font-size: 13px;
}

.wrong-right p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.population-belief-card {
  margin-top: 34px;
  padding: 31px;
  scroll-margin-top: 112px;
  color: #edf2ff;
  background:
    radial-gradient(circle at 93% 8%, rgba(122, 150, 255, 0.22), transparent 18rem),
    linear-gradient(145deg, #121d35, #1b2947 72%, #24365d);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  box-shadow: 0 24px 55px rgba(18, 29, 53, 0.19);
}

.population-belief-intro .card-kicker {
  color: #9fb6ff;
}

.population-belief-intro h3 {
  margin: 7px 0 11px;
  color: white;
  font-family: var(--serif);
  font-size: clamp(25px, 3vw, 34px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.population-belief-intro > p:last-child {
  max-width: 760px;
  margin: 0;
  color: #cbd5eb;
  line-height: 1.75;
}

.population-belief-intro code {
  color: #ffb192;
}

.population-belief-flow {
  margin-top: 27px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 0.9fr) auto minmax(0, 1.15fr);
  align-items: stretch;
  gap: 12px;
}

.population-node {
  min-width: 0;
  padding: 18px 17px;
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
}

.population-node > span,
.flow-abduction > span {
  display: block;
  color: #9fb6ff;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.population-node > strong {
  display: block;
  margin-top: 8px;
  overflow-x: auto;
  color: white;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
}

.population-node > p {
  margin: 8px 0 0;
  color: #b9c5dd;
  font-size: 10px;
  line-height: 1.45;
}

.population-node-belief {
  background: rgba(59, 185, 151, 0.13);
  border-color: rgba(89, 219, 183, 0.26);
}

.population-node-belief > span {
  color: #7ce0c2;
}

.flow-operator,
.flow-abduction {
  align-self: center;
  color: #ff9b75;
}

.flow-operator {
  font-size: 23px;
}

.flow-abduction {
  min-width: 76px;
  text-align: center;
}

.flow-abduction > b {
  display: block;
  margin-top: 4px;
  color: #ff9b75;
  font-size: 27px;
  line-height: 1;
}

.population-belief-equation {
  margin-top: 19px;
  padding: 8px 14px;
  overflow-x: auto;
  color: white;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 12px;
}

.epistemic-subpopulation-note {
  margin-top: 18px;
  padding: 22px 23px;
  color: #183e36;
  background: #e5f5ef;
  border: 1px solid rgba(89, 219, 183, 0.28);
  border-radius: 14px;
}

.epistemic-subpopulation-note > span {
  color: #18725f;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.epistemic-subpopulation-note h4 {
  margin: 5px 0 9px;
  color: #123f35;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
}

.epistemic-subpopulation-note p {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.7;
}

.epistemic-subpopulation-note > div {
  margin-top: 11px;
  overflow-x: auto;
  color: #123f35;
  background: rgba(255, 255, 255, 0.62);
  border-radius: 10px;
}

.population-wording {
  margin-bottom: 18px;
}

.population-wording > div {
  color: var(--ink);
}

.population-wording strong {
  line-height: 1.55;
}

.population-belief-memory {
  margin: 0;
  padding-top: 18px;
  color: #d9e1f2;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.7;
}

.population-belief-memory strong {
  color: #ffad8d;
}

.par-steps {
  margin: 31px 0 0;
  padding: 0;
  list-style: none;
}

.par-steps > li {
  position: relative;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 22px;
}

.par-steps > li + li {
  margin-top: 17px;
}

.step-index {
  position: relative;
  z-index: 1;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--blue);
  border: 6px solid var(--paper);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 750;
}

.par-steps > li:not(:last-child)::before {
  content: "";
  position: absolute;
  top: 52px;
  bottom: -22px;
  left: 26px;
  width: 2px;
  background: rgba(34, 86, 217, 0.2);
}

.abduction-step .step-index { background: var(--violet); }
.reduction-step .step-index { background: var(--green); }

.step-body {
  padding: 24px 28px 27px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 15px;
}

.step-body > span {
  color: var(--blue);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.abduction-step .step-body > span { color: var(--violet); }
.reduction-step .step-body > span { color: var(--green); }

.step-body h3 {
  margin: 1px 0 8px;
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 600;
}

.step-body > p {
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.step-formula {
  margin: 12px 0;
  padding: 9px 13px;
  overflow-x: auto;
  background: var(--paper);
  border-radius: 9px;
  font-size: 13px;
}

.mini-boundary {
  margin-top: 14px;
  padding: 10px 12px;
  color: #655341;
  background: #fff6dc;
  border-left: 3px solid #dda62d;
  font-size: 11px;
}

.query-lock {
  margin-top: 18px;
  padding: 14px;
  display: grid;
  grid-template-columns: auto auto auto auto 1fr;
  align-items: center;
  gap: 10px;
  background: var(--green-soft);
  border-radius: 10px;
}

.query-lock b,
.query-lock strong {
  padding: 6px 9px;
  background: white;
  border-radius: 7px;
  font-family: var(--serif);
}

.query-lock span {
  color: var(--green);
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
}

.query-lock i {
  color: var(--green);
  font-style: normal;
}

.query-lock > div {
  display: flex;
  justify-content: flex-end;
  gap: 5px;
}

.oracle-card {
  margin-top: 25px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}

.oracle-card > div {
  min-width: 0;
  padding: 20px 19px;
  color: white;
  background: var(--ink);
  border-radius: 13px;
}

.oracle-card > div:last-child {
  background: var(--blue);
}

.oracle-card span {
  display: block;
  color: #b7c0d2;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.oracle-card > div:last-child span {
  color: #c9d6ff;
}

.oracle-card strong {
  display: block;
  overflow-x: auto;
  font-size: 11px;
}

.candidate-note {
  margin-top: 17px;
  padding: 16px 18px;
  color: #4b5466;
  background: var(--paper-deep);
  border-radius: 10px;
  font-size: 12px;
}

.boundary-chapter blockquote {
  margin: 30px 0 25px;
  padding: 25px 28px;
  color: white;
  background: var(--blue);
  border: 0;
  border-radius: 15px;
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.7;
}

.mixture-card {
  color: white;
  background: var(--ink);
  font-size: 16px;
}

.boundary-grid {
  margin-top: 25px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.boundary-grid article {
  padding: 20px 18px;
  background: var(--white);
  border-top: 3px solid var(--orange);
  border-radius: 4px 4px 13px 13px;
}

.boundary-grid span {
  color: var(--orange);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.boundary-grid strong {
  display: block;
  margin-top: 6px;
  font-family: var(--serif);
  font-size: 17px;
}

.boundary-grid p {
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.5;
}

.audit-targets,
.audit-metrics {
  margin-top: 27px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.evidence-provenance {
  margin-top: 24px;
  padding: 15px 18px;
  color: #34405a;
  background: #edf2ff;
  border-left: 4px solid var(--blue);
  border-radius: 0 10px 10px 0;
}

.evidence-provenance > span {
  display: block;
  color: var(--blue);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.evidence-provenance > code {
  display: inline-block;
  margin-top: 5px;
  font-size: 11px;
  font-weight: 750;
}

.evidence-provenance > p {
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 10px;
}

.evidence-provenance code {
  overflow-wrap: anywhere;
}

.evidence-provenance > a {
  margin-top: 8px;
  display: inline-block;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  text-decoration: none;
}

.evidence-provenance > a:hover {
  text-decoration: underline;
}

.audit-targets article,
.audit-metrics > div {
  padding: 20px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 13px;
}

.audit-targets span,
.audit-metrics span {
  color: var(--blue);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.audit-targets strong,
.audit-metrics strong {
  display: block;
  margin-top: 7px;
  font-family: var(--serif);
  font-size: 22px;
}

.audit-targets p,
.audit-metrics p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.55;
}

.audit-verdict {
  margin-top: 27px;
  padding: 25px 28px;
  color: white;
  background: var(--ink);
  border-left: 5px solid var(--orange);
  border-radius: 14px;
}

.audit-verdict > span {
  color: #ffad8e;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.audit-verdict > strong {
  display: block;
  margin-top: 5px;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.45;
}

.audit-verdict > p {
  margin: 8px 0 0;
  color: #c9cfdb;
  font-size: 13px;
}

.repair-result {
  margin-top: 16px;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  align-items: center;
  gap: 17px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.repair-result > div {
  min-width: 0;
}

.repair-result span {
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.repair-result strong {
  display: block;
  margin-top: 3px;
  color: #a74828;
  font-family: var(--serif);
  font-size: 29px;
}

.repair-result > div:nth-of-type(2) strong {
  color: var(--green);
}

.repair-result p {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 10px;
}

.repair-result > i {
  color: var(--blue);
  font-family: var(--serif);
  font-size: 25px;
  font-style: normal;
}

.repair-result > b {
  padding: 8px 11px;
  color: var(--green);
  background: var(--green-soft);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 13px;
}

.audit-metrics {
  margin-top: 12px;
}

.audit-metrics > div {
  padding: 17px 16px;
}

.audit-metrics strong {
  color: var(--green);
}

.audit-warning {
  margin-bottom: 30px;
}

.claim-separation {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.claim-separation article {
  padding: 20px 18px;
  background: var(--white);
  border-top: 4px solid var(--green);
  border-radius: 4px 4px 13px 13px;
  box-shadow: var(--shadow);
}

.claim-separation article.claim-open {
  border-top-color: #d59c25;
}

.claim-separation span {
  color: var(--green);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.claim-separation .claim-open span {
  color: #9a6e11;
}

.claim-separation strong {
  display: block;
  margin-top: 6px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.35;
}

.claim-separation p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.55;
}

.claim-caption {
  margin: 13px 0 0;
  padding: 14px 16px;
  color: #645834;
  background: #fff4d5;
  border-radius: 9px;
  font-size: 11px;
}

.audit-table-wrap {
  margin-top: 30px;
  overflow-x: auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 15px;
  box-shadow: var(--shadow);
}

.audit-table {
  width: 100%;
  min-width: 930px;
  border-collapse: collapse;
  font-size: 12px;
  line-height: 1.55;
}

.audit-table th {
  padding: 14px 17px;
  color: white;
  background: var(--ink);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-align: left;
  text-transform: uppercase;
}

.audit-table th:first-child {
  width: 22%;
}

.audit-table th:nth-child(2) {
  width: 31%;
}

.audit-table td {
  padding: 17px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.audit-table tr:last-child td {
  border-bottom: 0;
}

.audit-table td:first-child {
  color: var(--ink);
  background: rgba(240, 243, 250, 0.6);
}

.audit-table code {
  padding: 1px 4px;
  font-size: 10px;
  white-space: nowrap;
  background: var(--paper-deep);
  border-radius: 4px;
}

.status {
  display: inline-block;
  margin-bottom: 5px;
  padding: 3px 7px;
  border-radius: 99px;
  font-size: 9px;
  letter-spacing: 0.05em;
}

.status.affected {
  color: #a23f20;
  background: #ffebe4;
}

.status.relabel,
.status.boundary,
.status.api {
  color: #234da6;
  background: #eaf0ff;
}

.status.retained {
  color: #126a59;
  background: var(--green-soft);
}

.status.pending {
  color: #756027;
  background: #fff3cf;
}

.contrast-diagnostic {
  margin-top: 25px;
  padding: 25px 27px;
  color: white;
  background: var(--blue);
  border-radius: 15px;
}

.contrast-diagnostic span {
  color: #cbd8ff;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.contrast-diagnostic h3 {
  margin: 3px 0 0;
  font-family: var(--serif);
  font-size: 21px;
}

.contrast-values {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  align-items: center;
  gap: 15px;
}

.contrast-values p {
  margin: 0;
  padding: 13px 15px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 10px;
}

.contrast-values small {
  display: block;
  color: #cbd8ff;
  font-size: 9px;
}

.contrast-values strong {
  display: block;
  margin-top: 3px;
  font-family: var(--serif);
  font-size: 24px;
}

.contrast-values > i {
  color: #cbd8ff;
  font-size: 11px;
  font-style: normal;
}

.contrast-values > b {
  padding: 7px 9px;
  color: #174c43;
  background: #d5f5ed;
  border-radius: 8px;
  font-family: var(--serif);
}

.contrast-diagnostic > p {
  margin: 13px 0 0;
  color: #d7dff6;
  font-size: 12px;
}

.audit-rule {
  margin-top: 24px;
  padding: 18px 20px;
  color: #4c5567;
  background: var(--paper-deep);
  border-radius: 11px;
  font-size: 13px;
}

.repair-table-wrap {
  margin-top: 31px;
  overflow-x: auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 15px;
  box-shadow: var(--shadow);
}

.repair-table {
  width: 100%;
  min-width: 650px;
  border-collapse: collapse;
  font-size: 13px;
}

.repair-table th {
  padding: 14px 19px;
  color: white;
  background: var(--ink);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-align: left;
  text-transform: uppercase;
}

.repair-table th:first-child {
  width: 39%;
  color: #ffad8e;
}

.repair-table td {
  padding: 16px 19px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.repair-table tr:last-child td {
  border-bottom: 0;
}

.repair-table td:first-child {
  color: #9c482b;
  background: rgba(255, 240, 231, 0.55);
}

.repair-table td:last-child {
  color: #166f60;
}

.agent-checklist {
  margin: 31px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11px;
  list-style: none;
}

.agent-checklist li {
  padding: 15px 17px;
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: start;
  gap: 11px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.agent-checklist li > span {
  width: 17px;
  height: 17px;
  margin-top: 4px;
  border: 2px solid var(--green);
  border-radius: 4px;
}

.agent-checklist p {
  margin: 0;
  color: #454e60;
  font-size: 12px;
  line-height: 1.55;
}

.final-rule {
  margin-top: 28px;
  padding: 30px 34px;
  color: white;
  background:
    linear-gradient(120deg, rgba(34, 86, 217, 0.96), rgba(23, 63, 168, 0.98)),
    var(--blue);
  border-radius: 17px;
  box-shadow: 0 20px 48px rgba(34, 86, 217, 0.2);
}

.final-rule p {
  margin: 0 0 8px;
  color: #cbd8ff;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.final-rule strong {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.65;
}

@media (max-width: 1000px) {
  .guard-hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.8fr);
    gap: 42px;
  }

  .reading-layout {
    grid-template-columns: 170px minmax(0, 720px);
    gap: 48px;
  }
}

@media (max-width: 780px) {
  .notation-page .topbar-inner {
    width: min(100% - 26px, 1260px);
  }

  .notation-page .topnav {
    max-width: 57vw;
    overflow-x: auto;
    gap: 18px;
  }

  .guard-hero-grid {
    min-height: auto;
    padding-block: 72px 66px;
    grid-template-columns: 1fr;
  }

  .red-line {
    max-width: 360px;
  }

  .index-rule {
    grid-template-columns: 1fr;
  }

  .index-arrow {
    height: 16px;
  }

  .reading-layout {
    padding-top: 64px;
    grid-template-columns: 1fr;
  }

  .reading-rail {
    position: static;
    padding: 15px 18px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 13px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 13px;
  }

  .reading-rail > p,
  .rail-reminder {
    display: none;
  }

  .world-instance,
  .oracle-card {
    grid-template-columns: 1fr;
  }

  .repair-result {
    grid-template-columns: 1fr auto 1fr;
  }

  .repair-result > b {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .contrast-values {
    grid-template-columns: 1fr auto 1fr;
  }

  .contrast-values > b {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .world-instance > i {
    transform: rotate(90deg);
  }
}

@media (max-width: 620px) {
  .wrap {
    width: min(100% - 30px, 1180px);
  }

  .notation-page .brand small {
    display: none;
  }

  .notation-page .topnav {
    max-width: 48vw;
  }

  .guard-copy h1 {
    font-size: 60px;
  }

  .guard-deck {
    font-size: 18px;
  }

  .guard-hero .hero-actions {
    display: grid;
  }

  .guard-hero .button {
    width: 100%;
  }

  .contract-band {
    padding-block: 44px 47px;
  }

  .contract-equation {
    margin-inline: -8px;
    font-size: 12px;
  }

  .reading-rail {
    grid-template-columns: 1fr 1fr;
  }

  .chapter {
    padding-bottom: 67px;
  }

  .chapter + .chapter {
    padding-top: 65px;
  }

  .chapter-heading {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
  }

  .chapter-heading > span {
    width: 40px;
    height: 40px;
  }

  .chapter > .lead {
    font-size: 19px;
  }

  .definition-card,
  .belief-definition,
  .mixture-card {
    padding: 22px 19px;
  }

  .world-instance,
  .wrong-right,
  .three-objects,
  .population-belief-flow,
  .boundary-grid,
  .audit-targets,
  .audit-metrics,
  .claim-separation,
  .agent-checklist {
    grid-template-columns: 1fr;
  }

  .population-belief-card {
    padding: 24px 19px;
  }

  .flow-operator,
  .flow-abduction {
    justify-self: center;
  }

  .flow-abduction > b {
    transform: rotate(90deg);
  }

  .repair-result {
    grid-template-columns: 1fr;
  }

  .repair-result > i {
    transform: rotate(90deg);
  }

  .repair-result > b {
    grid-column: auto;
  }

  .contrast-values {
    grid-template-columns: 1fr;
  }

  .contrast-values > b {
    grid-column: auto;
  }

  .contrast-values > i {
    text-align: center;
  }

  .audit-table-wrap {
    overflow: visible;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .audit-table {
    min-width: 0;
    display: block;
  }

  .audit-table thead {
    display: none;
  }

  .audit-table tbody,
  .audit-table tr,
  .audit-table td {
    display: block;
  }

  .audit-table tr {
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
  }

  .audit-table td,
  .audit-table td:first-child {
    padding: 13px 16px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
  }

  .audit-table td:last-child {
    border-bottom: 0;
  }

  .audit-table td::before {
    display: block;
    margin-bottom: 5px;
    color: var(--ink-soft);
    font-size: 8px;
    font-weight: 850;
    letter-spacing: 0.09em;
    text-transform: uppercase;
  }

  .audit-table td:nth-child(1)::before { content: "Paper / experiment"; }
  .audit-table td:nth-child(2)::before { content: "Audit verdict"; }
  .audit-table td:nth-child(3)::before { content: "Evidence boundary / action"; }

  .par-steps > li {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
  }

  .step-index {
    width: 42px;
    height: 42px;
    border-width: 4px;
    font-size: 17px;
  }

  .par-steps > li:not(:last-child)::before {
    top: 41px;
    left: 20px;
  }

  .step-body {
    padding: 20px 17px 22px;
  }

  .step-formula {
    margin-inline: -5px;
    font-size: 11px;
  }

  .query-lock {
    grid-template-columns: auto 1fr auto;
  }

  .query-lock > span {
    text-align: center;
  }

  .query-lock > div {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .boundary-chapter blockquote,
  .final-rule {
    padding: 23px 21px;
  }

  .boundary-chapter blockquote {
    font-size: 18px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}