/* CTR sections use the existing homepage's type, surfaces and spacing tokens. */
.ctr-definition, .ctr-model { padding-block: var(--section, 110px); }
.ctr-definition { background: var(--surface); border-block: 1px solid var(--line); }
.ctr-definition-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.ctr-definition .b-head { margin: 0; }
.ctr-eyebrow { color: var(--orange) !important; text-transform: uppercase; letter-spacing: .13em; font: 600 11px/1.6 var(--font); margin-bottom: 18px; }
.ctr-definition-copy { padding-top: 34px; }
.ctr-definition-copy p { color: var(--muted); font-size: 17px; line-height: 1.75; margin: 0 0 20px; }
.ctr-definition-copy p:first-child { color: var(--ink); }
.ctr-definition-copy .b-link { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; margin-top: 8px; }
.ctr-definition-copy svg, .ctr-model-tail svg, .ctr-source svg { width: 16px; height: 16px; flex: none; }
.ctr-route { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; padding: 0; margin: 64px 0 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.ctr-route li { position: relative; display: grid; align-content: start; gap: 14px; padding: 30px; }
.ctr-route li + li { border-left: 1px solid var(--line); }
.ctr-route b { font-size: 14px; color: var(--orange); }
.ctr-route span { font-size: 18px; font-weight: 700; letter-spacing: -.025em; }
.ctr-route small { color: var(--muted); font-size: 13px; line-height: 1.6; }
.ctr-model-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.ctr-model-grid article { border-top: 2px solid var(--orange); padding: 32px 28px 24px; background: var(--surface); border-radius: 0 0 10px 10px; }
.ctr-model-n { font-size: 11px; color: var(--muted); }
.ctr-model h3 { font-size: 24px; letter-spacing: -.035em; line-height: 1.3; margin: 22px 0 16px; }
.ctr-model-grid p { color: var(--muted); font-size: 15px; line-height: 1.75; }
.ctr-model-grid .ctr-model-note { font-size: 12px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.ctr-model-tail { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; margin-top: 32px; font-size: 14px; color: var(--muted); }
.ctr-model-tail .b-link { display: inline-flex; align-items: center; gap: 10px; }
.ctr-metrics-inputs fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.ctr-metrics-inputs fieldset + fieldset { margin-top: 30px; }
.ctr-metrics-inputs legend { padding: 0 0 16px; font-size: 19px; font-weight: 700; letter-spacing: -.025em; }
.ctr-input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ctr-input-row label { display: grid; gap: 10px; font-size: 12px; color: var(--muted); }
.ctr-input-row input { width: 100%; min-width: 0; min-height: 54px; padding: 12px 14px; border: 1px solid var(--line-2); border-radius: 8px; background: var(--surface); color: var(--ink); font: 600 19px/1.4 var(--font); }
.ctr-input-row input:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }
.ctr-input-row input[aria-invalid="true"] { border-color: #bb321d; }
.ctr-reset { align-self: start; min-height: 44px; border: 0; border-bottom: 1px solid currentColor; padding: 4px 0; background: transparent; color: var(--muted); font: inherit; font-size: 13px; cursor: pointer; transition: color .2s; }
.ctr-reset:hover { color: var(--orange); }
.ctr-reset:focus-visible { outline: 2px solid var(--orange); outline-offset: 5px; }
.ctr-metrics-out { display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.ctr-rates { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px; }
.ctr-rates dt { color: var(--inst-muted); font-size: 12px; }
.ctr-rates dd { margin: 10px 0 0; color: #fff; font-size: clamp(24px, 3.1vw, 38px); font-weight: 800; letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.ctr-difference { margin: 28px 0 18px; display: grid; gap: 6px; }
.ctr-difference strong { font-size: clamp(34px, 4.5vw, 58px); line-height: 1.1; color: var(--orange); font-weight: 900; letter-spacing: -.05em; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.ctr-difference span { color: var(--inst-muted); font-size: 13px; }
.ctr-count-change { color: #fff; font-size: 13px; line-height: 1.6; margin-bottom: 16px; }
.ctr-metrics-out .b-calc-sub { min-height: 4.8em; margin-bottom: 22px; }
.ctr-source { display: inline-flex; align-items: center; gap: 8px; color: var(--inst-muted); font-size: 12px; line-height: 1.5; text-decoration: underline; text-underline-offset: 3px; transition: color .2s; }
.ctr-source:hover { color: #fff; }
.ctr-measurement-note { max-width: 760px; margin: 28px auto 0; color: var(--muted); font-size: 13px; line-height: 1.8; text-align: center; }
@media (max-width: 1000px) {
  .ctr-definition-grid { gap: 36px; }
  .ctr-route li { padding: 24px 18px; }
  .ctr-route span { font-size: 16px; }
  .ctr-model-grid { gap: 16px; }
  .ctr-model-grid article { padding-inline: 20px; }
}
@media (max-width: 760px) {
  .ctr-definition, .ctr-model { padding-block: 72px; }
  .ctr-definition-grid { grid-template-columns: 1fr; gap: 20px; }
  .ctr-definition-copy { padding-top: 0; }
  .ctr-route { grid-template-columns: 1fr 1fr; margin-top: 36px; }
  .ctr-route li:nth-child(3) { border-left: 0; }
  .ctr-route li:nth-child(n+3) { border-top: 1px solid var(--line); }
  .ctr-model-grid { grid-template-columns: 1fr; }
  .ctr-model-grid article { padding: 26px; }
  .ctr-model h3 { font-size: 23px; }
  .ctr-rates dd { font-size: 30px; }
  .ctr-difference strong { font-size: 48px; }
}
@media (max-width: 390px) {
  .ctr-input-row { gap: 10px; }
  .ctr-input-row input { padding-inline: 10px; font-size: 17px; }
  .ctr-rates { gap: 10px; }
  .ctr-rates dd { font-size: 27px; }
  .ctr-route li { padding: 22px 16px; }
}
@media (prefers-reduced-motion: reduce) { .ctr-reset, .ctr-source { transition: none; } }