@font-face {
  font-family: "Barlow";
  src: url("/assets/fonts/Barlow-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Barlow";
  src: url("/assets/fonts/Barlow-Medium.ttf") format("truetype");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Barlow";
  src: url("/assets/fonts/Barlow-SemiBold.ttf") format("truetype");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Barlow";
  src: url("/assets/fonts/Barlow-Bold.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  color-scheme: light;
  --paper: #f4f6f5;
  --panel: #fbfcfb;
  --ink: #101b2b;
  --muted: #556070;
  --rule: #c8d0d4;
  --rule-strong: #86919a;
  --orange: #c84e2f;
  --orange-text: #9f381f;
  --orange-soft: #f0d5ca;
  --blue: #245b96;
  --blue-soft: #d7e3ef;
  --ready: #2e7253;
  --shadow: 0 16px 42px rgba(25, 39, 50, 0.09);
  font-family: "Barlow", "Trebuchet MS", sans-serif;
  font-synthesis: none;
  background: var(--paper);
  color: var(--ink);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), transparent 360px),
    var(--paper);
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
}

.topbar {
  width: min(1460px, calc(100% - 48px));
  min-height: 72px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--rule-strong);
}

.wordmark {
  width: fit-content;
  display: flex;
  align-items: baseline;
  gap: 7px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.025em;
}

.wordmark span {
  font-size: 1.02rem;
  font-weight: 520;
}

.wordmark strong {
  font-size: 1.02rem;
  font-weight: 780;
}

.topbar-status,
.model-readiness dt,
.headline-output span,
.legend,
.chart-heading p,
.chart-heading output,
.comparison-strip span,
.control output,
.parameter-readout,
.preset-matrix table {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #344451;
}

.status-light {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ready);
  box-shadow: 0 0 0 3px rgba(46, 114, 83, 0.14);
}

.topbar nav {
  justify-self: end;
  display: flex;
  gap: 24px;
}

.topbar nav a,
.footer-links a {
  color: #344451;
  font-size: 0.82rem;
  text-decoration: none;
}

.topbar nav a:hover,
.topbar nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--orange-text);
  text-decoration: underline;
  text-underline-offset: 5px;
}

main,
footer {
  width: min(1460px, calc(100% - 48px));
  margin-inline: auto;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(360px, 0.85fr);
  gap: clamp(44px, 8vw, 120px);
  align-items: end;
  padding: clamp(56px, 8vw, 112px) 0 44px;
}

.intro h1 {
  max-width: 970px;
  margin: 0;
  font-size: clamp(2.65rem, 5.6vw, 5.75rem);
  font-weight: 520;
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.intro > div > p {
  max-width: 700px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.22rem);
  line-height: 1.55;
}

.model-readiness {
  margin: 0;
  border-top: 1px solid var(--rule-strong);
}

.model-readiness div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}

.model-readiness dt {
  color: var(--muted);
}

.model-readiness dd {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 650;
}

.calculator {
  display: grid;
  grid-template-columns: 350px minmax(0, 1fr);
  min-height: 820px;
  background: var(--panel);
  border: 1px solid var(--rule-strong);
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.control-rack {
  padding: 28px 26px;
  background: #e9edef;
  border-right: 1px solid var(--rule-strong);
}

.rack-heading,
.results-header,
.chart-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.rack-heading h2,
.results-header h2,
.methodology h2 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.reset-button {
  min-width: 54px;
  min-height: 36px;
  padding: 0 11px;
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  color: var(--ink);
  background: transparent;
  font-size: 0.75rem;
  cursor: pointer;
}

.reset-button:hover {
  background: var(--panel);
}

/*
 * Two buttons no longer fit beside the heading at the rack's fixed width, so
 * this row wraps and the actions drop below the title rather than squeezing it
 * into a clipped two-line block.
 */
.rack-heading {
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
}

.rack-heading > div {
  flex: 1 1 auto;
  min-width: 0;
}

.rack-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.reset-button:focus-visible,
.scenario-control input:focus-visible + span,
.control input:focus-visible,
.choice-option input:focus-visible + span {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.scenario-control {
  margin: 32px 0 0;
  padding: 0;
  border: 0;
}

.scenario-control legend {
  width: 100%;
  margin-bottom: 9px;
  padding: 0 0 9px;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.045em;
}

.scenario-control label {
  display: block;
  margin-top: 7px;
  cursor: pointer;
}

.scenario-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.scenario-control label span {
  min-height: 53px;
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: background 160ms ease, border-color 160ms ease;
}

.scenario-control label:hover span {
  background: rgba(255, 255, 255, 0.55);
}

.scenario-control input:checked + span {
  background: var(--panel);
  border-color: var(--rule-strong);
  box-shadow: 0 5px 16px rgba(25, 39, 50, 0.07);
}

.scenario-control strong {
  font-size: 0.83rem;
}

.scenario-control small {
  color: var(--muted);
  font-size: 0.74rem;
}

#assumption-controls {
  margin-top: 32px;
  border-top: 1px solid var(--rule-strong);
}

.control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}

.control-label {
  max-width: 225px;
  font-size: 0.85rem;
  font-weight: 630;
  line-height: 1.3;
}

.control output {
  color: var(--blue);
  font-weight: 720;
}

.choice-control {
  min-width: 0;
  display: block;
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
}

.choice-control legend {
  margin-bottom: 12px;
  padding: 0;
}

.choice-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.choice-option {
  min-width: 0;
  cursor: pointer;
}

.choice-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-option span {
  min-height: 62px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  padding: 8px 5px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.38);
  text-align: center;
  transition: background 160ms ease, border-color 160ms ease;
}

.choice-option:hover span {
  background: rgba(255, 255, 255, 0.72);
}

.choice-option input:checked + span {
  border-color: var(--blue);
  background: var(--panel);
  box-shadow: 0 4px 12px rgba(25, 39, 50, 0.06);
}

.choice-option strong {
  font-size: 0.72rem;
}

.choice-option small {
  color: var(--muted);
  font-size: 0.61rem;
  line-height: 1.15;
}

.control input[type="range"] {
  --fill: 40%;
  grid-column: 1 / -1;
  width: 100%;
  height: 26px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

.control input[type="range"]::-webkit-slider-runnable-track {
  height: 3px;
  background: linear-gradient(90deg, var(--blue) var(--fill), #b8c1c7 var(--fill));
}

.control input[type="range"]::-webkit-slider-thumb {
  width: 14px;
  height: 20px;
  margin-top: -8px;
  appearance: none;
  border: 2px solid var(--panel);
  border-radius: 2px;
  background: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
}

.control input[type="range"]::-moz-range-track {
  height: 3px;
  background: #b8c1c7;
}

.control input[type="range"]::-moz-range-progress {
  height: 3px;
  background: var(--blue);
}

.control input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 18px;
  border: 2px solid var(--panel);
  border-radius: 2px;
  background: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
}

.parameter-readout {
  margin-top: 26px;
  padding: 17px 0 4px;
  border-top: 1px solid var(--rule-strong);
}

.parameter-readout > div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
}

.parameter-readout h3 {
  margin: 0;
  font-family: "Barlow", "Trebuchet MS", sans-serif;
  font-size: 0.84rem;
  letter-spacing: normal;
  text-transform: none;
}

.parameter-readout > div span {
  color: var(--blue);
  text-align: right;
}

.parameter-readout dl {
  margin: 12px 0 0;
}

.parameter-readout dl div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--rule);
}

.parameter-readout dt {
  color: var(--muted);
}

.parameter-readout dd {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.rack-note {
  display: flex;
  gap: 10px;
  margin-top: 26px;
  color: var(--muted);
}

.rack-note svg {
  width: 19px;
  min-width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.35;
}

.rack-note p {
  margin: 0;
  font-size: 0.74rem;
  line-height: 1.5;
}

.results-bay {
  min-width: 0;
  padding: 28px clamp(24px, 3.4vw, 54px) 36px;
}

.results-header {
  align-items: end;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule-strong);
}

.headline-output {
  text-align: right;
}

.headline-output span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
}

.headline-output strong {
  color: var(--orange-text);
  font-size: 1.1rem;
  font-weight: 720;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding: 14px 0;
  color: #344451;
}

.legend > span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.legend-line {
  width: 24px;
  height: 0;
  border-top: 2px solid;
}

.legend-line.baseline {
  border-color: var(--ink);
  border-top-style: dashed;
}

.legend-line.firm-a {
  border-color: var(--orange);
}

.legend-line.firm-b {
  border-color: var(--blue);
}

.legend-disclaimer {
  margin-left: auto;
  color: var(--orange-text);
}

.model-error {
  margin: 12px 0 0;
  padding: 11px 12px;
  border: 1px solid var(--orange);
  border-radius: 3px;
  color: var(--orange-text);
  background: var(--orange-soft);
  font-size: 0.82rem;
  line-height: 1.4;
}

.chart-block {
  margin-top: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}

.chart-heading {
  align-items: baseline;
}

.chart-heading h3 {
  margin: 0;
  font-size: 1.04rem;
  letter-spacing: -0.015em;
}

.chart-heading p {
  margin: 5px 0 0;
  color: var(--muted);
}

.chart-heading output {
  color: var(--muted);
}

.chart-frame {
  min-width: 0;
  margin-top: 8px;
  overflow: hidden;
}

.trajectory-chart {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

.plot-grid {
  fill: none;
  stroke: #d6dcdf;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.axis-labels {
  fill: #68747c;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
}

.gap-area {
  fill: var(--orange-soft);
  opacity: 0.42;
}

.trace {
  fill: none;
  stroke-width: 3;
  stroke-linecap: square;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.trace-baseline {
  stroke: var(--ink);
  stroke-width: 1.6;
  stroke-dasharray: 7 6;
}

.trace-a {
  stroke: var(--orange);
}

.trace-b {
  stroke: var(--blue);
}

.trace-b.is-overlapping {
  stroke-width: 2.2;
  stroke-dasharray: 4 6;
}

.trace.is-drawing {
  animation: trace-in 720ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.sweep {
  color: var(--rule-strong);
  opacity: 0;
  transform: translateX(0);
  pointer-events: none;
}

.sweep path,
.sweep circle {
  fill: var(--panel);
  stroke: currentColor;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.sweep.is-scanning {
  animation: scan-plot 760ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes trace-in {
  from { stroke-dashoffset: var(--trace-length); }
  to { stroke-dashoffset: 0; }
}

@keyframes scan-plot {
  0% { opacity: 0; transform: translateX(0); }
  10% { opacity: 0.75; }
  85% { opacity: 0.35; }
  100% { opacity: 0; transform: translateX(700px); }
}

.comparison-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 24px;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}

.comparison-strip div {
  min-width: 0;
  padding: 16px 18px 18px 0;
}

.comparison-strip div + div {
  padding-left: 18px;
  border-left: 1px solid var(--rule);
}

.comparison-strip div.is-active {
  background: linear-gradient(180deg, rgba(215, 227, 239, 0.55), rgba(215, 227, 239, 0.16));
}

.comparison-strip div.is-active strong {
  color: var(--blue);
}

.comparison-strip span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
}

.comparison-strip strong {
  font-size: 0.84rem;
}

.methodology {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(60px, 10vw, 160px);
  padding: clamp(80px, 10vw, 150px) 0;
}

.methodology h2 {
  max-width: 440px;
  font-size: clamp(2rem, 3.5vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.methodology > div p {
  max-width: 610px;
  margin: 24px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.methodology ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule-strong);
}

.model-specification {
  min-width: 0;
}

.methodology li {
  display: grid;
  grid-template-columns: minmax(110px, 0.3fr) 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
}

.methodology li strong {
  font-size: 0.92rem;
}

.methodology li span {
  color: var(--muted);
  line-height: 1.5;
}

.methodology li i {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
}

.preset-matrix {
  margin-top: 42px;
}

.preset-matrix h3 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.preset-matrix table {
  width: 100%;
  border-collapse: collapse;
  color: var(--ink);
  text-align: right;
}

.preset-matrix caption {
  padding: 0 0 10px;
  color: var(--muted);
  text-align: left;
  text-transform: none;
  letter-spacing: normal;
}

.preset-matrix th,
.preset-matrix td {
  padding: 11px 12px;
  border-top: 1px solid var(--rule);
}

.preset-matrix th:first-child {
  padding-left: 0;
  text-align: left;
}

.preset-matrix th:last-child,
.preset-matrix td:last-child {
  padding-right: 0;
}

.preset-matrix thead th {
  color: var(--muted);
  font-weight: 500;
}

.preset-matrix tbody th {
  font-family: "Barlow", "Trebuchet MS", sans-serif;
  font-size: 0.8rem;
  letter-spacing: normal;
  text-transform: none;
}

.preset-matrix p {
  margin: 16px 0 0;
  color: var(--muted);
  font-family: "Barlow", "Trebuchet MS", sans-serif;
  font-size: 0.84rem;
  letter-spacing: normal;
  line-height: 1.55;
  text-transform: none;
}

.parameter-contract {
  margin-top: 32px;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}

.parameter-contract summary {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

.parameter-contract summary::-webkit-details-marker {
  display: none;
}

.parameter-contract summary::after {
  content: "+";
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1rem;
  font-weight: 500;
}

.parameter-contract[open] summary::after {
  content: "−";
}

.parameter-contract summary:focus-visible,
.parameter-contract-table:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.parameter-contract-table {
  max-width: 100%;
  padding-bottom: 16px;
  overflow-x: auto;
}

.parameter-contract table {
  width: 100%;
  min-width: 740px;
  border-collapse: collapse;
  color: var(--ink);
  font-size: 0.76rem;
  line-height: 1.35;
}

.parameter-contract th,
.parameter-contract td {
  padding: 9px 12px;
  border-top: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.parameter-contract th:first-child,
.parameter-contract td:first-child {
  padding-left: 0;
}

.parameter-contract th:last-child,
.parameter-contract td:last-child {
  padding-right: 0;
}

.parameter-contract thead th {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.parameter-contract tbody th {
  white-space: nowrap;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.86rem;
  font-weight: 600;
}

.parameter-contract tbody td:nth-child(3),
.parameter-contract tbody td:nth-child(4) {
  color: var(--muted);
}

footer {
  display: grid;
  grid-template-columns: 0.6fr 1fr auto;
  gap: 36px;
  align-items: start;
  padding: 26px 0 40px;
  border-top: 1px solid var(--rule-strong);
  color: var(--muted);
  font-size: 0.78rem;
}

footer p {
  margin: 0;
}

footer p:first-child {
  color: var(--ink);
  font-weight: 720;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 1020px) {
  .topbar,
  main,
  footer {
    width: min(100% - 32px, 900px);
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .model-readiness {
    max-width: 620px;
  }

  .calculator {
    grid-template-columns: 300px minmax(0, 1fr);
  }

  .control-rack {
    padding-inline: 20px;
  }

  .results-bay {
    padding-inline: 22px;
  }
}

@media (max-width: 760px) {
  html {
    scroll-behavior: auto;
  }

  .topbar {
    min-height: 64px;
    grid-template-columns: 1fr auto;
  }

  .topbar-status {
    justify-self: end;
  }

  .topbar nav {
    display: none;
  }

  .intro {
    padding-top: 56px;
  }

  .intro h1 {
    font-size: clamp(2.55rem, 12vw, 4rem);
  }

  .calculator {
    grid-template-columns: 1fr;
    clip-path: none;
  }

  .control-rack {
    border-right: 0;
    border-bottom: 1px solid var(--rule-strong);
  }

  .scenario-control label span {
    grid-template-columns: 100px 1fr;
  }

  .results-header {
    align-items: flex-start;
  }

  .headline-output {
    max-width: 120px;
  }

  .legend-disclaimer {
    width: 100%;
    margin-left: 0;
  }

  .chart-frame {
    margin-inline: -14px;
  }

  .axis-labels {
    font-size: 28px;
  }

  .comparison-strip {
    grid-template-columns: 1fr;
  }

  .comparison-strip div {
    padding: 14px 0;
  }

  .comparison-strip div + div {
    padding-left: 0;
    border-top: 1px solid var(--rule);
    border-left: 0;
  }

  .methodology {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}