:root {
  color-scheme: light;
  --bg: #f7f4ed;
  --surface: #fffdf8;
  --surface-strong: #ffffff;
  --ink: #191815;
  --muted: #676057;
  --line: #d8d0c4;
  --line-strong: #b6ac9f;
  --blue: #245a85;
  --blue-soft: #d9e8ef;
  --rust: #a14f3b;
  --rust-soft: #f0ddd4;
  --green: #426b58;
  --focus: #0b5cab;
  --shadow: 0 18px 50px rgba(38, 32, 23, 0.08);
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Iowan Old Style", "New York", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(rgba(25, 24, 21, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 24, 21, 0.025) 1px, transparent 1px),
    var(--bg);
  background-size: 44px 44px;
  font-family: var(--sans);
  line-height: 1.5;
}

a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 24px 0 18px;
}

.wordmark {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
}

.source-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

main {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto 56px;
}

.intro {
  display: grid;
  gap: 14px;
  max-width: 760px;
  padding: 58px 0 44px;
}

.eyebrow {
  margin: 0;
  color: var(--rust);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(42px, 5.8vw, 76px);
  line-height: 0.96;
  letter-spacing: 0;
}

.lede {
  max-width: 650px;
  margin-bottom: 0;
  color: #35302a;
  font-family: var(--serif);
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.28;
}

.simulator {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.88);
  box-shadow: var(--shadow);
}

.simulator-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.simulator-heading h2 {
  margin: 3px 0 0;
  font-family: var(--serif);
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1;
  letter-spacing: 0;
}

.heading-footnote {
  position: relative;
  top: -0.82em;
  display: inline-block;
  margin-left: 3px;
  color: var(--rust) !important;
  font-family: var(--sans);
  font-size: 0.22em;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}

.heading-footnote:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.year-readout {
  min-width: 124px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-strong);
  text-align: center;
}

.year-readout span {
  display: block;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 34px;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.top-controls {
  display: grid;
  gap: 15px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.picker label,
.metric-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.country-select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface-strong);
  color: var(--ink);
}

.country-select {
  padding: 0 38px 0 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.country-select:focus,
button:focus-visible,
a:focus-visible,
summary:focus-visible,
.rights-badge:focus-visible {
  outline: 3px solid rgba(11, 92, 171, 0.24);
  outline-offset: 2px;
}

.button-row {
  display: flex;
  gap: 9px;
  justify-self: end;
  min-width: min(100%, 230px);
}

.action {
  flex: 1;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 750;
}

.action.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--surface);
}

.action:hover:not(:disabled) {
  border-color: var(--ink);
}

.timeline-control {
  display: grid;
  gap: 8px;
}

.timeline-control label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-control input[type="range"] {
  width: 100%;
  accent-color: var(--ink);
  cursor: pointer;
}

.timeline-labels {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.timeline-labels span:nth-child(2) {
  color: var(--ink);
  font-weight: 800;
}

.timeline-labels span:last-child {
  text-align: right;
}

.comparison {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.country-panel {
  display: grid;
  gap: 16px;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.country-panel[data-side="left"] {
  --accent: var(--rust);
  --accent-soft: var(--rust-soft);
}

.country-panel[data-side="right"] {
  --accent: var(--blue);
  --accent-soft: var(--blue-soft);
}

.picker {
  display: grid;
  gap: 8px;
}

.country-meta {
  min-height: 72px;
}

.country-meta h3 {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 2px;
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.05;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.rights-badge {
  position: relative;
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  width: 27px;
  height: 27px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.92);
  color: var(--muted);
  cursor: help;
}

.rights-badge.top {
  color: var(--green);
}

.rights-badge.bottom {
  color: var(--rust);
}

.rights-badge svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.rights-badge::before,
.rights-badge::after {
  position: absolute;
  left: 50%;
  z-index: 5;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 3px);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
}

.rights-badge::before {
  bottom: calc(100% + 4px);
  width: 8px;
  height: 8px;
  background: var(--ink);
  content: "";
  rotate: 45deg;
}

.rights-badge::after {
  bottom: calc(100% + 8px);
  width: max-content;
  max-width: min(280px, 82vw);
  padding: 8px 10px;
  border-radius: 6px;
  background: var(--ink);
  color: var(--surface);
  content: attr(data-tooltip);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 650;
  line-height: 1.35;
  text-align: center;
  white-space: normal;
}

.rights-badge:hover::before,
.rights-badge:hover::after,
.rights-badge:focus-visible::before,
.rights-badge:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

.country-meta p {
  margin-bottom: 0;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.visual-stage {
  position: relative;
  display: grid;
  place-items: center;
  height: clamp(250px, 32vw, 340px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background:
    linear-gradient(rgba(25, 24, 21, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 24, 21, 0.035) 1px, transparent 1px),
    #fbfaf6;
  background-size: 26px 26px;
}

.visual-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.metric-row > div {
  min-width: 0;
  padding: 13px;
  border-top: 1px solid var(--line);
}

.metric-row strong {
  display: block;
  margin-top: 2px;
  font-size: clamp(21px, 2.8vw, 33px);
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.percent-value {
  color: var(--accent);
}

.summary-sentence {
  margin: 22px auto 0;
  max-width: 920px;
  color: #2f2b25;
  font-family: var(--serif);
  font-size: clamp(21px, 2.8vw, 34px);
  line-height: 1.24;
  text-align: center;
}

.summary-sentence .hover-number {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}

.summary-sentence .model-footnote {
  position: relative;
  top: -0.55em;
  margin-left: 3px;
  color: var(--rust);
  font-family: var(--sans);
  font-size: 0.42em;
  font-weight: 800;
  text-decoration: none;
}

.summary-sentence .model-footnote:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.more-info {
  margin-top: 28px;
  margin-bottom: 80px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.9);
}

summary {
  padding: 18px 20px;
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

.details-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 26px;
  padding: 4px 20px 20px;
}

.details-grid h3,
.source-list h3 {
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.1;
}

.details-grid p {
  color: #37322c;
}

.formula {
  display: grid;
  gap: 8px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f2eee5;
  overflow-x: auto;
}

.formula .katex-display {
  margin: 0;
}

.sanity-check {
  padding-left: 14px;
  border-left: 3px solid var(--line-strong);
}

.source-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 0 20px 22px;
}

.source-list h3 {
  flex: 0 0 100%;
}

.source-list a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
}

.source-list a:hover {
  border-color: var(--line-strong);
  background: #f2eee5;
}

@media (max-width: 980px) {
  .button-row {
    width: 100%;
    justify-self: stretch;
  }

  .action {
    flex: 1;
  }

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

@media (max-width: 620px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  main,
  .site-header {
    width: min(100% - 24px, 1120px);
  }

  .intro {
    padding: 32px 0 28px;
  }

  .lede {
    font-size: clamp(18px, 4.8vw, 22px);
    line-height: 1.32;
  }

  .simulator {
    padding: 14px;
  }

  .simulator-heading {
    align-items: start;
    flex-direction: column;
    gap: 14px;
  }

  .year-readout {
    width: 100%;
    padding: 9px 12px;
  }

  .country-panel {
    padding: 12px;
  }

  .visual-stage {
    height: clamp(220px, 70vw, 280px);
  }

  .metric-row {
    grid-template-columns: 1fr;
  }

  .details-grid {
    gap: 16px;
    padding: 2px 16px 16px;
  }

  .source-list {
    padding: 0 16px 18px;
  }

  .source-list a {
    flex: 1 1 100%;
    justify-content: center;
  }
}