:root {
  color-scheme: dark;
  --bg: #210c20;
  --panel: #2b1029;
  --paper: #ffe9e7;
  --muted: #c69da8;
  --rose: #eaa6ba;
  --cyan: #a8f3e8;
  --line: #654054;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--paper);
  background: var(--bg);
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background:
    radial-gradient(ellipse at 60% 26%, #53213e55, transparent 62%), var(--bg);
}
button,
input {
  font: inherit;
}
button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}
button,
a {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 5px;
}
main {
  max-width: 1600px;
  margin: auto;
  padding: 0 4.5%;
}
.skip-link {
  position: fixed;
  top: 12px;
  clip-path: inset(100%);
  left: 20px;
  z-index: 9;
  background: var(--cyan);
  color: var(--bg);
  padding: 16px;
}
.skip-link:focus {
  clip-path: none;
}
.masthead {
  min-height: 99px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.identity {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 1.4px;
  text-decoration: none;
}
.mark {
  font-size: 39px;
  font-weight: 400;
  line-height: 1;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--rose);
  border-radius: 50%;
  color: var(--rose);
}
.edition,
.eyebrow,
.model-label,
.chart-topline,
.inspection label,
footer,
.field label span {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  letter-spacing: 1.4px;
}
.edition {
  color: var(--muted);
}
.quiet-button {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 30px;
  color: var(--paper);
  padding: 11px 14px;
  font-size: 11px;
  min-height: 42px;
}
.quiet-button span {
  padding-left: 16px;
  color: var(--cyan);
}
.quiet-button:hover {
  border-color: var(--cyan);
}
.observatory {
  padding-top: 27px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
}
.eyebrow {
  color: var(--muted);
  display: block;
  margin: 0;
}
.section-heading .eyebrow {
  color: var(--rose);
}
.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  margin-right: 8px;
  box-shadow: 0 0 14px #a8f3e888;
  animation: breathe 4s ease-in-out infinite;
}
.model-label {
  color: var(--muted);
  margin: 0;
}
.headline {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 30px 0 19px;
  gap: 32px;
}
h1 {
  margin: 0;
  font-size: clamp(42px, 4.6vw, 70px);
  font-weight: 400;
  line-height: 0.99;
  letter-spacing: -3.5px;
}
h1 span {
  color: var(--rose);
}
.result-block {
  text-align: right;
  width: min(50%, 650px);
}
#result {
  color: var(--cyan);
  font-size: clamp(29px, 4.3vw, 65px);
  font-weight: 400;
  letter-spacing: -2.5px;
  text-align: right;
  width: 100%;
  background: none;
  border: 0;
  padding: 10px 0 2px;
  outline: none;
  text-overflow: ellipsis;
}
#result_status {
  font-size: 11px;
  color: var(--muted);
  margin: 0;
  min-height: 26px;
  line-height: 1.5;
}
.chart-shell {
  position: relative;
  min-height: 340px;
  margin-top: 10px;
  background: linear-gradient(110deg, #ffffff03, #ffffff00);
  border: 1px solid var(--line);
  border-radius: 5px;
  overflow: hidden;
}
.chart-topline {
  display: flex;
  align-items: center;
  gap: 27px;
  padding: 20px 25px 0;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 1px;
}
.chart-unit {
  margin-left: auto;
}
.legend-dot {
  width: 5px;
  height: 5px;
  display: inline-block;
  border-radius: 50%;
  margin-right: 8px;
}
.cyan {
  background: var(--cyan);
}
.rose {
  background: var(--rose);
}
#growth_chart {
  display: block;
  width: 100%;
  height: auto;
  max-height: 390px;
  overflow: visible;
}
.grid-line {
  stroke: #6c435745;
  stroke-width: 1;
}
.chart-label {
  fill: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 10px;
}
.capital-line {
  fill: none;
  stroke: var(--rose);
  stroke-width: 1;
  stroke-dasharray: 5 7;
  opacity: 0.7;
}
.growth-path,
.growth-glow {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.growth-glow {
  opacity: 0.35;
  stroke-width: 6;
}
.growth-path.draw {
  animation: draw 900ms cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.curve-point {
  fill: var(--bg);
  stroke: var(--cyan);
  stroke-width: 1.5;
}
.inspection-line line {
  stroke: var(--cyan);
  stroke-width: 1;
  stroke-dasharray: 3 5;
  opacity: 0.7;
}
.inspection-line circle {
  fill: var(--cyan);
  stroke: var(--bg);
  stroke-width: 3;
}
.inspection {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 60px;
  padding: 0 25px;
  border-top: 1px solid #65405470;
  background: #ffffff03;
}
.inspection label {
  font-size: 9px;
  color: var(--muted);
  white-space: nowrap;
}
.inspection label span {
  font-size: 15px;
  color: var(--cyan);
  margin-left: 8px;
}
.inspection input {
  flex: 1;
  min-width: 70px;
  accent-color: var(--cyan);
  cursor: pointer;
  height: 30px;
}
.inspection output {
  font:
    11px ui-monospace,
    monospace;
  min-width: 55px;
  color: var(--muted);
}
.inspection strong {
  font-size: 13px;
  min-width: 125px;
  text-align: right;
  color: var(--cyan);
  font-weight: 400;
}
#chart_empty {
  position: absolute;
  inset: 50px 20px 60px;
  align-content: center;
  text-align: center;
  color: var(--rose);
  background: var(--bg);
}
.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  padding: 24px 0 26px;
  gap: 24px;
}
.metrics > div {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.metrics > div:first-child {
  padding-left: 0;
  border: 0;
}
.metrics .eyebrow {
  font-size: 9px;
  letter-spacing: 1px;
}
.metrics strong {
  display: block;
  font-size: 25px;
  font-weight: 400;
  margin-top: 10px;
  letter-spacing: -0.8px;
}
.metrics > div:nth-child(2) strong {
  color: var(--cyan);
}
.metrics p {
  margin: 0;
  text-align: right;
  line-height: 1.5;
  font-size: 13px;
  color: var(--rose);
}
.parameter-dock {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr 1fr 1fr 1.2fr;
  gap: 24px;
  padding: 27px;
  background: #f3d6db;
  color: #311626;
  border-radius: 5px;
  align-items: start;
  box-shadow: 0 9px 40px #10020f40;
}
.dock-title .eyebrow {
  font-size: 9px;
  color: #6c4558;
  letter-spacing: 1px;
}
h2 {
  font-size: 25px;
  line-height: 1.05;
  letter-spacing: -1px;
  font-weight: 400;
  margin: 11px 0 0;
}
.field {
  min-width: 0;
}
.field label {
  font-size: 11px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 5px;
}
.field label span {
  font-size: 8px;
  letter-spacing: 0;
  color: #694354;
}
.input-wrap {
  display: flex;
  border-bottom: 1px solid #a68091;
  align-items: center;
  gap: 4px;
  margin: 9px 0 8px;
}
.input-wrap > span {
  font-size: 20px;
  color: #805767;
}
.input-wrap input {
  background: transparent;
  border: 0;
  color: #311626;
  font-size: 28px;
  letter-spacing: -1px;
  padding: 4px 0 8px;
  width: 100%;
  min-width: 0;
  border-radius: 0;
  outline-offset: 0;
}
.input-wrap:focus-within {
  border-color: #311626;
}
.parameter-dock input:focus-visible,
.parameter-dock button:focus-visible {
  outline-color: #392139;
}
.field small {
  display: block;
  font-size: 9px;
  line-height: 1.4;
  color: #694354;
}
.error {
  font-size: 10px;
  color: #9f213c;
  display: block;
  line-height: 1.4;
  margin-top: 6px;
}
.actions {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.calculate {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: #32172c;
  color: #fff1ef;
  border: 1px solid #32172c;
  padding: 16px 15px;
  min-height: 51px;
  font-size: 12px;
  border-radius: 3px;
  transition:
    transform 0.2s,
    background 0.2s;
}
.calculate span {
  font-size: 20px;
}
.calculate:hover {
  background: #523149;
  transform: translateY(-2px);
}
.calculate:active {
  transform: translateY(1px);
}
.random {
  font-size: 10px;
  background: none;
  border: 0;
  color: #59394b;
  min-height: 30px;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
}
.random span {
  display: inline-block;
  font-size: 23px;
  transition: transform 0.35s;
}
.random:hover span {
  transform: rotate(180deg);
}
footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 35px;
  padding: 25px 0 32px;
  font-size: 9px;
  letter-spacing: 0;
  color: var(--muted);
  line-height: 1.65;
}
footer p {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  max-width: 620px;
}
footer a {
  white-space: nowrap;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
.foot-marker {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-style: italic;
}
@keyframes draw {
  from {
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
  }
  to {
    stroke-dasharray: 1;
    stroke-dashoffset: 0;
  }
}
@keyframes breathe {
  50% {
    opacity: 0.35;
  }
}
.motion-paused * {
  animation: none !important;
  transition: none !important;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}
@media (min-width: 1500px) {
  .headline {
    padding-top: 40px;
  }
  .chart-shell {
    margin-top: 20px;
  }
  .parameter-dock {
    padding: 32px;
  }
}
@media (max-width: 1050px) {
  .edition {
    display: none;
  }
  .parameter-dock {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .dock-title {
    grid-column: 1/-1;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  h2 {
    font-size: 23px;
    margin: 0;
  }
  h2 br {
    display: none;
  }
  .actions {
    grid-column: 1/-1;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
  }
  .calculate {
    min-width: 205px;
  }
  .random {
    padding: 10px 15px;
  }
  .metrics {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .metrics > p {
    display: none;
  }
  .chart-shell {
    min-height: 0;
  }
  footer {
    align-items: flex-start;
  }
}
@media (max-width: 600px) {
  main {
    padding: 0 20px;
  }
  .masthead {
    min-height: 80px;
    gap: 12px;
  }
  .identity {
    font-size: 10px;
    letter-spacing: 1px;
  }
  .mark {
    font-size: 31px;
    width: 35px;
    height: 35px;
  }
  .quiet-button {
    font-size: 10px;
    padding: 8px 10px;
  }
  .quiet-button span {
    padding-left: 8px;
  }
  .observatory {
    padding-top: 20px;
  }
  .section-heading .eyebrow {
    font-size: 8px;
    letter-spacing: 1px;
  }
  .model-label {
    display: none;
  }
  .headline {
    display: block;
    padding: 24px 0 10px;
  }
  h1 {
    font-size: 47px;
    line-height: 1;
    letter-spacing: -2.8px;
  }
  h1 br {
    display: none;
  }
  h1 span {
    display: block;
  }
  .result-block {
    width: 100%;
    text-align: left;
    margin-top: 27px;
  }
  .result-block .eyebrow {
    font-size: 8px;
  }
  #result {
    text-align: left;
    font-size: 43px;
    letter-spacing: -2px;
    padding-top: 6px;
  }
  #result_status {
    font-size: 10px;
    min-height: 18px;
  }
  .chart-shell {
    margin-top: 12px;
  }
  .chart-topline {
    padding: 15px 12px 3px;
    gap: 12px;
    font-size: 6px;
    letter-spacing: 0.3px;
  }
  .chart-unit {
    display: none;
  }
  #growth_chart {
    height: 225px;
    max-height: none;
  }
  .chart-label {
    font-size: 15px;
  }
  .inspection {
    padding: 9px 12px;
    gap: 8px;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .inspection label {
    font-size: 7px;
  }
  .inspection label span {
    display: none;
  }
  .inspection input {
    grid-column: 1/-1;
    grid-row: 2;
    width: 100%;
    margin: 0;
  }
  .inspection output {
    font-size: 10px;
    grid-column: 1;
    grid-row: 3;
  }
  .inspection strong {
    min-width: 0;
    font-size: 12px;
    grid-row: 3;
    grid-column: 2;
  }
  .metrics {
    gap: 12px;
    padding: 20px 0 23px;
    grid-template-columns: 1fr 1fr;
  }
  .metrics > div {
    padding-left: 12px;
  }
  .metrics > div:nth-child(3) {
    grid-column: 1/-1;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 12px 0 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .metrics > div:nth-child(3) strong {
    margin: 0;
    font-size: 18px;
  }
  .metrics .eyebrow {
    font-size: 7px;
    letter-spacing: 0.4px;
  }
  .metrics strong {
    font-size: clamp(15px, 5vw, 21px);
    margin-top: 8px;
  }
  .parameter-dock {
    grid-template-columns: 1fr 1fr;
    padding: 20px;
    gap: 17px;
  }
  .dock-title {
    display: block;
  }
  .dock-title .eyebrow {
    font-size: 8px;
  }
  h2 {
    margin-top: 8px;
    font-size: 25px;
  }
  .field:nth-child(2) {
    grid-column: 1/-1;
  }
  .field label {
    font-size: 10px;
  }
  .field label span {
    font-size: 7px;
  }
  .input-wrap input {
    font-size: 27px;
  }
  .field small {
    font-size: 9px;
  }
  .actions {
    flex-direction: column;
    gap: 3px;
  }
  .calculate {
    width: 100%;
    font-size: 12px;
  }
  .random {
    width: 100%;
    padding: 4px 0;
    min-height: 35px;
  }
  footer {
    flex-direction: column;
    gap: 18px;
    padding: 24px 0 30px;
    font-size: 9px;
  }
  footer p {
    align-items: flex-start;
  }
  footer a {
    padding-left: 30px;
  }
}
@media (max-width: 350px) {
  main {
    padding: 0 14px;
  }
  h1 {
    font-size: 42px;
  }
  #result {
    font-size: 37px;
  }
  .parameter-dock {
    padding: 17px;
  }
  .metrics strong {
    font-size: 16px;
  }
  .quiet-button span {
    display: none;
  }
}

/* Vector arrows keep their shape across Safari, system fonts, and emoji sets. */
svg.compat-arrow {
  display: inline-block;
  position: static;
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  vertical-align: -0.125em;
  fill: none;
  stroke: currentColor;
}