:root {
  --sky: #05070d;
  --ink: #f3f0ea;
  --text: #b6bac8;
  --muted: #7d8295;
  --rule: rgba(243, 240, 234, 0.1);
  --loss: #ff6a55;
  --gold: #ffd27a;
  --pad: clamp(1rem, 5vw, 4.5rem);
  --axis: 4.9rem;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--sky); -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--sky);
  color: var(--text);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--gold); }
a:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }
img { display: block; max-width: 100%; height: auto; }
.sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.top {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  padding: 1.15rem var(--pad);
  font-size: 0.95rem;
}
.top a { text-decoration: none; }
.top .name { color: var(--ink); font-weight: 650; letter-spacing: -0.01em; }
.top .by { color: var(--muted); }
.top .by:hover { color: var(--ink); }

/* The chart stays pinned while empty steps scroll past and drive it */
.story { position: relative; }
.stage {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  touch-action: pan-y;
  --horizon: 54vh;
  --plot-top: 10vh;
}
#sky, #axes { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.steps { position: relative; margin-top: -100vh; margin-top: -100svh; pointer-events: none; }
.step { height: 100vh; height: 100svh; }
.step-fall { height: 160vh; height: 160svh; }

#axes .g { stroke: rgba(243, 240, 234, 0.06); stroke-width: 1; }
#axes .yl, #axes .xl { fill: rgba(243, 240, 234, 0.4); font: 500 11px var(--sans); font-variant-numeric: tabular-nums; }
#axes .yl.one { fill: rgba(243, 240, 234, 0.8); }
#axes .note { fill: rgba(243, 240, 234, 0.45); font-weight: 400; }
#axes .tick { stroke: rgba(243, 240, 234, 0.25); }
#axes .off { fill: rgba(243, 240, 234, 0.3); }
#axes .hz { stroke: rgba(255, 236, 205, 0.55); stroke-width: 1; transition: stroke 0.5s; }
#axes .hz-glow { stroke: rgba(255, 214, 150, 0.32); stroke-width: 4; transition: stroke 0.5s; }
#axes.hi .hz { stroke: var(--gold); }
#axes.hi .hz-glow { stroke: rgba(255, 210, 122, 0.7); }
#axes .ring { fill: none; stroke: var(--gold); stroke-width: 1.5; }
#axes .lead { stroke: var(--gold); stroke-width: 1; }
#axes .tag { fill: var(--gold); font: 600 12px var(--sans); }
#axes .path { stroke-width: 1.5; stroke-dasharray: 2 3; }
#axes .path.up { stroke: rgba(243, 240, 234, 0.75); }
#axes .path.down { stroke: var(--loss); }
#axes .end { fill: var(--sky); stroke-width: 1.5; }
#axes .end.up { stroke: rgba(243, 240, 234, 0.75); }
#axes .end.down { stroke: var(--loss); }
#axes .hover { fill: none; stroke: var(--ink); stroke-width: 1.5; }

/* Captions live in whatever part of the sky is empty at that moment */
.caps { position: absolute; inset: 0; pointer-events: none; }
.cap {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.1rem, 1.55vw, 1.35rem);
  line-height: 1.45;
  text-shadow: 0 0 18px var(--sky), 0 0 6px var(--sky), 0 0 2px var(--sky);
}
.js .cap {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.7s var(--ease);
}
.js .cap.is-on { opacity: 1; transform: none; }
.cap.low {
  position: absolute;
  left: var(--pad);
  top: calc(var(--horizon) + clamp(1rem, 3vh, 2.75rem));
  max-width: min(38rem, calc(100% - var(--pad) - var(--axis)));
}
.intro h1 {
  margin: 0 0 0.85rem;
  color: var(--ink);
  font: 700 clamp(2.3rem, min(5.4vw, 7.8vh), 4.7rem)/0.98 var(--display);
  letter-spacing: -0.04em;
}
.intro .nw { white-space: nowrap; }
.intro .lede { max-width: 38rem; margin: 0; color: var(--text); font-size: clamp(1rem, 1.35vw, 1.15rem); line-height: 1.55; }
.intro .hint { margin: 1rem 0 0; color: var(--muted); font-size: 0.9rem; }

.readout {
  position: absolute;
  top: calc(var(--plot-top) + 0.25rem);
  right: calc(var(--pad) + var(--axis));
  width: min(25rem, calc(100% - 2 * var(--pad) - var(--axis)));
}
.readout .cap { position: absolute; left: 0; right: 0; }
.meter { margin: 0 0 1rem; text-shadow: 0 0 18px var(--sky), 0 0 6px var(--sky); }
.js .meter { opacity: 0; transition: opacity 0.45s ease; }
.js .meter.is-on { opacity: 1; }
.meter-n { display: block; color: var(--loss); font: 700 clamp(3rem, 6.5vw, 5.6rem)/0.95 var(--display); letter-spacing: -0.045em; font-variant-numeric: tabular-nums; }
.meter-l { display: block; margin-top: 0.35rem; color: var(--text); font-size: 0.95rem; }

.tip {
  position: absolute;
  z-index: 3;
  min-width: 11.5rem;
  padding: 0.6rem 0.75rem;
  background: #0d111d;
  border: 1px solid rgba(243, 240, 234, 0.16);
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.45;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}
.tip b { display: block; margin-bottom: 0.15rem; color: var(--ink); font-size: 0.9rem; font-weight: 650; }
.tip span { display: block; }

/* After the chart */
.after { position: relative; z-index: 2; padding: 0 var(--pad) clamp(4rem, 9vw, 7rem); background: var(--sky); }
.block { max-width: 52rem; padding-top: clamp(5rem, 11vw, 9rem); }
.block h2 {
  max-width: 18ch;
  margin: 0 0 1rem;
  color: var(--ink);
  font: 700 clamp(1.9rem, 3.8vw, 2.9rem)/1.06 var(--display);
  letter-spacing: -0.03em;
}
.block p { max-width: 38rem; margin: 0 0 1rem; }
.block .note, .block .stack { color: var(--muted); font-size: 0.95rem; }

.loss { --label: 16rem; max-width: 52rem; margin: 2.2rem 0 1rem; }
.loss ol { margin: 0; padding: 0; list-style: none; }
.loss li, .loss-axis { display: grid; grid-template-columns: var(--label) minmax(0, 1fr) 5.5rem; column-gap: 1rem; align-items: center; }
.loss li { padding: 0.7rem 0; border-top: 1px solid var(--rule); }
.loss-axis { padding-bottom: 0.45rem; color: var(--muted); font-size: 0.8rem; }
.loss-axis .ax { display: flex; justify-content: space-between; }
.lbl { color: var(--ink); font-size: 0.98rem; line-height: 1.3; }
.lbl small { display: block; margin-top: 0.15rem; color: var(--muted); font-size: 0.84rem; }
.track { display: flex; justify-content: flex-end; height: 10px; border-right: 1px solid rgba(243, 240, 234, 0.6); }
.bar { width: var(--w); background: var(--loss); opacity: 0.85; transform-origin: right center; }
.js .loss .bar { transform: scaleX(0); transition: transform 0.9s var(--ease); transition-delay: calc(var(--i, 0) * 70ms); }
.js .loss.is-in .bar { transform: none; }
.val { color: var(--loss); font-weight: 650; text-align: right; font-variant-numeric: tabular-nums; }

.flip { display: flex; flex-wrap: wrap; gap: 1rem 3rem; margin: 1.6rem 0 1.8rem; }
.flip .num { position: relative; display: inline-block; font: 700 clamp(2.6rem, 7vw, 4.6rem)/1 var(--display); letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }
.flip .was { color: var(--muted); }
.flip .was::after {
  content: "";
  position: absolute;
  left: -3%; right: -3%; top: 52%;
  height: 0.065em;
  background: var(--loss);
}
.flip .is { color: var(--loss); }
.js .flip .was::after { transform: scaleX(0); transform-origin: left center; transition: transform 0.6s var(--ease) 0.25s; }
.js .flip.is-in .was::after { transform: none; }
.js .flip .is { opacity: 0; transition: opacity 0.6s ease 0.85s; }
.js .flip.is-in .is { opacity: 1; }
.flip small { display: block; margin-top: 0.5rem; color: var(--muted); font-size: 0.9rem; }

.shot { max-width: 42rem; margin: 2rem 0 0; }
.shot img { border: 1px solid var(--rule); }
.shot figcaption { margin-top: 0.7rem; color: var(--muted); font-size: 0.9rem; }

.foot { position: relative; z-index: 2; padding: 2.4rem var(--pad) 3rem; border-top: 1px solid var(--rule); background: var(--sky); color: var(--muted); font-size: 0.88rem; line-height: 1.55; }
.foot p { max-width: 46rem; margin: 0 0 0.9rem; }
.foot strong { color: var(--text); font-weight: 600; }
.foot .sign { margin: 1.4rem 0 0; color: var(--text); }
.foot .sign a { margin-left: 0.4rem; }

@media (max-width: 700px) {
  :root { --axis: 3.4rem; }
  body { font-size: 1rem; }
  .readout { top: calc(var(--plot-top) + 4.4rem); left: var(--pad); right: auto; }
  .loss li { grid-template-columns: minmax(0, 1fr) 5rem; row-gap: 0.5rem; }
  .loss li .lbl { grid-column: 1 / -1; }
  .loss-axis { grid-template-columns: minmax(0, 1fr) 5rem; }
  .loss-axis > span:first-child { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .js .cap, .js .meter, .js .loss .bar, .js .flip .was::after, .js .flip .is { transition: none; }
  .js .cap { transform: none; }
}