.rt-hero,
.rt-section,
.rt-summary,
.rt-principles,
.rt-review,
.rt-evidence,
.rt-related {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.rt-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: end;
  padding-block: clamp(92px, 12vw, 148px) clamp(72px, 9vw, 108px);
}

.rt-back {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.rt-back:hover {
  color: var(--ink);
}

.rt-hero h1 {
  max-width: 860px;
  margin: 24px 0 0;
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 0.98;
  text-wrap: balance;
}

.rt-hero-side > p:first-child {
  max-width: 500px;
  margin: 0;
  color: var(--text);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.55;
}

.rt-reviewed {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 28px 0 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rt-section {
  padding-block: 88px 104px;
  border-top: 1px solid var(--line-strong);
}

.rt-section-muted {
  position: relative;
}

.rt-heading {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: clamp(48px, 8vw, 112px);
  margin-bottom: 64px;
}

.rt-heading > p,
.rt-principles > div > p,
.rt-review > div > p,
.rt-evidence > div > p,
.rt-related > div > p,
.rt-summary > p,
.rt-control-proof > p,
.rt-control-boundary > p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rt-heading h2,
.rt-principles h2,
.rt-review h2,
.rt-evidence h2,
.rt-related h2 {
  margin: 0;
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.1;
  text-wrap: balance;
}

.rt-heading > div > p,
.rt-review > div > p:last-child,
.rt-evidence > div > p:last-child {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--text);
  font-size: 17px;
  line-height: 1.68;
}

.rt-heading small {
  display: block;
  max-width: 720px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.rt-index {
  border-top: 1px solid var(--line-strong);
}

.rt-index-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) minmax(140px, auto);
  gap: 24px;
  align-items: center;
  padding-block: 34px;
  border-bottom: 1px solid var(--line-soft);
}

.rt-index-row > span,
.rt-cluster > span,
.rt-step header > span,
.rt-review li > span,
.rt-capability-links > a > span,
.rt-related > div:last-child > a > span,
.rt-reference-links > a > span,
.rt-control header > span,
.rt-principles li > span {
  color: var(--quiet);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.rt-index-row div > p,
.rt-step header > p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rt-index-row h3,
.rt-cluster h3,
.rt-step h3,
.rt-review h3,
.rt-control h3 {
  margin: 0;
  font-size: clamp(21px, 2.4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.15;
  text-wrap: balance;
}

.rt-index-row div > div,
.rt-cluster p,
.rt-step > div > p,
.rt-review li p,
.rt-control-answer p,
.rt-control-proof > div,
.rt-control-boundary > div,
.rt-reference-links p,
.rt-related p {
  margin: 16px 0 0;
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}

.rt-index-row > strong {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.rt-index-row:hover h3,
.rt-index-row:hover > strong,
.rt-cluster a:hover,
.rt-capability-links > a:hover strong,
.rt-related a:hover strong,
.rt-reference-links a:hover strong {
  color: var(--accent);
}

.rt-index-row i,
.rt-capability-links i,
.rt-related i,
.rt-reference-links i {
  font-style: normal;
}

.rt-clusters {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
}

.rt-cluster {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 18px;
  padding: 34px 32px 40px 0;
  border-bottom: 1px solid var(--line-soft);
}

.rt-cluster:nth-child(even) {
  padding-right: 0;
  padding-left: 32px;
  border-left: 1px solid var(--line-soft);
}

.rt-cluster ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.rt-cluster li {
  border-top: 1px solid var(--line-soft);
}

.rt-cluster a {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.rt-summary {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: clamp(48px, 8vw, 112px);
  padding-block: 64px 80px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.rt-summary h2 {
  max-width: 840px;
  margin: 0;
  font-size: clamp(25px, 3.2vw, 38px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.18;
  text-wrap: balance;
}

.rt-steps,
.rt-controls {
  border-top: 1px solid var(--line-strong);
}

.rt-step {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(32px, 6vw, 88px);
  padding-block: 36px;
  border-bottom: 1px solid var(--line-soft);
}

.rt-step header {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-content: start;
  gap: 12px;
}

.rt-step header > p {
  margin-top: -2px;
}

.rt-step > div > p {
  max-width: 720px;
  margin-top: 18px;
}

.rt-principles,
.rt-review,
.rt-evidence,
.rt-related {
  display: grid;
  grid-template-columns: minmax(250px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(48px, 8vw, 112px);
  padding-block: 96px 112px;
  border-top: 1px solid var(--line-strong);
}

.rt-principles h2,
.rt-review h2,
.rt-evidence h2,
.rt-related h2 {
  margin-top: 20px;
}

.rt-principles ol,
.rt-review ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.rt-principles li,
.rt-review li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 20px;
  padding-block: 24px;
  border-top: 1px solid var(--line-soft);
}

.rt-principles li:last-child,
.rt-review li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.rt-principles li p {
  margin: 0;
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}

.rt-capability-links,
.rt-reference-links,
.rt-related > div:last-child {
  border-top: 1px solid var(--line-strong);
}

.rt-capability-links > a,
.rt-reference-links > a,
.rt-related > div:last-child > a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  min-height: 76px;
  border-bottom: 1px solid var(--line-soft);
}

.rt-capability-links strong,
.rt-reference-links strong,
.rt-related strong {
  font-size: clamp(17px, 1.8vw, 22px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.rt-capability-links i {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.rt-reference-links > a,
.rt-related > div:last-child > a {
  align-items: start;
  padding-block: 22px;
}

.rt-reference-links p,
.rt-related p {
  margin-top: 8px;
  font-size: 14px;
}

.rt-controls {
  counter-reset: trust-control;
}

.rt-control {
  display: grid;
  grid-template-columns: minmax(210px, 0.7fr) repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 54px);
  padding-block: 38px;
  border-bottom: 1px solid var(--line-soft);
}

.rt-control header {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
}

.rt-control h3 {
  font-size: 20px;
}

.rt-control-answer p,
.rt-control-proof > div,
.rt-control-boundary > div {
  margin-top: 0;
}

.rt-control-proof > p,
.rt-control-boundary > p {
  margin-bottom: 12px;
}

@media (max-width: 960px) {
  .rt-hero,
  .rt-principles,
  .rt-review,
  .rt-evidence,
  .rt-related {
    grid-template-columns: 1fr;
  }

  .rt-hero {
    gap: 36px;
    padding-block: 80px 72px;
  }

  .rt-control {
    grid-template-columns: minmax(180px, 0.6fr) repeat(2, minmax(0, 1fr));
  }

  .rt-control-boundary {
    grid-column: 2 / -1;
  }
}

@media (max-width: 700px) {
  .rt-heading,
  .rt-summary,
  .rt-step,
  .rt-control {
    grid-template-columns: 1fr;
  }

  .rt-heading {
    gap: 24px;
    margin-bottom: 44px;
  }

  .rt-index-row {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .rt-index-row > strong {
    grid-column: 2;
    justify-content: flex-start;
  }

  .rt-clusters {
    grid-template-columns: 1fr;
  }

  .rt-cluster,
  .rt-cluster:nth-child(even) {
    padding: 28px 0 34px;
    border-left: 0;
  }

  .rt-summary {
    gap: 24px;
  }

  .rt-step {
    gap: 22px;
  }

  .rt-step > div,
  .rt-control > div {
    padding-left: 50px;
  }

  .rt-control {
    gap: 24px;
  }

  .rt-control-boundary {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .rt-hero,
  .rt-section,
  .rt-summary,
  .rt-principles,
  .rt-review,
  .rt-evidence,
  .rt-related {
    width: min(100% - 32px, 1120px);
  }

  .rt-hero h1 {
    font-size: clamp(38px, 12vw, 54px);
  }

  .rt-section,
  .rt-principles,
  .rt-review,
  .rt-evidence,
  .rt-related {
    padding-block: 72px 88px;
  }

  .rt-capability-links > a,
  .rt-reference-links > a,
  .rt-related > div:last-child > a {
    grid-template-columns: 34px minmax(0, 1fr);
    padding-block: 18px;
  }

  .rt-capability-links i,
  .rt-reference-links i,
  .rt-related i {
    grid-column: 2;
  }
}

@media print {
  .site-header,
  .site-footer,
  .cta-band,
  .rt-back {
    display: none !important;
  }

  .rt-hero,
  .rt-section,
  .rt-summary,
  .rt-principles,
  .rt-review,
  .rt-evidence,
  .rt-related {
    width: 100%;
    padding-block: 24px;
  }

  .rt-step,
  .rt-control,
  .rt-cluster,
  .rt-review li {
    break-inside: avoid;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rt-back,
  .rt-index-row,
  .rt-cluster a,
  .rt-capability-links > a,
  .rt-reference-links > a,
  .rt-related a {
    transition: none;
  }
}