/* ==========================================================================
   SimulacraBench · competition page
   White ground, always. Ink carries body text, crimson carries interactivity
   and emphasis, maroon carries the dark modules. --sky appears exactly once,
   on the microdata at rest in the closed-evaluation flow.
   Signature system: the respondent × question matrix. The why-compete panels,
   the section glyphs and the icon set are all built from two cell states —
   an observed response, and a model estimate.
   ========================================================================== */

:root {
  --maroon: #5A0F0F;
  --crimson: #C8102E;
  --coral: #FF7B68;
  --bone: #F4EDE4;
  --ink: #1C1E21;
  --white: #FFFFFF;
  --sky: #7FB8CE;
  --grad: linear-gradient(135deg, var(--coral), var(--crimson), var(--maroon));

  --hairline: rgba(28, 30, 33, 0.14);
  --hairline-soft: rgba(28, 30, 33, 0.09);
  --on-dark: rgba(244, 237, 228, 0.86);
  --on-dark-line: rgba(244, 237, 228, 0.22);

  /* the arch: a quarter-round on the top corners of bands and dark modules */
  --arch-lg: clamp(48px, 9vw, 120px);
  --arch-md: clamp(28px, 4vw, 56px);
  --r-pill: 999px;
  --r-card: 4px;

  --shell: 74rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-y: clamp(3rem, 6vw, 5rem);

  --font: "Inter", -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--crimson); text-decoration: none; }
p a { text-decoration: underline; text-underline-offset: 0.2em; }
img, svg { max-width: 100%; }
/* Identifiers out of the submission contract — file names, the API, the gated
   sentinel — set in mono at a size that matches the surrounding text. */
code { font-family: var(--mono); font-size: 0.92em; }
b { font-weight: 500; color: var(--maroon); }
table { border-collapse: collapse; }

.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

:focus-visible {
  outline: 2px solid var(--crimson);
  outline-offset: 3px;
  border-radius: 3px;
}
.pill:focus-visible, .arrow-link:focus-visible { border-radius: var(--r-pill); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
.skip-link {
  position: absolute; left: 1rem; top: -3.5rem; z-index: 100;
  background: var(--maroon); color: var(--bone);
  padding: 0.5rem 1.25rem; border-radius: var(--r-pill);
  transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }

.shell {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }

/* ---------- type voices ---------- */
.h1-name {
  display: block;
  font-weight: 800;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--maroon);
}
.h1-tag {
  display: block;
  margin-top: 0.5rem;
  font-weight: 800;
  font-size: clamp(1.15rem, 2.3vw, 1.7rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--crimson);
  max-width: 20ch;
}
.section-head {
  font-weight: 800;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--maroon);
  max-width: 24ch;
}
.head-em {
  display: block;
  color: var(--crimson);
  margin-top: 0.12em;
}
/* These three heads carry copy that breaks awkwardly at the default 24ch
   measure — a wider measure lets them sit at two lines (one for the rules
   subline) without touching the locked copy. */
#data .section-head, #rules .section-head { max-width: 40ch; }
@media (max-width: 760px) { .br-wide { display: none; } }
.head-sub {
  display: block;
  margin-top: 0.6rem;
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--ink);
  max-width: 46ch;
}
.head-on-dark { color: var(--bone); }
.head-on-dark .head-em { color: var(--coral); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 1.35rem;
}
.eyebrow-dark { color: var(--bone); }
.hero-eyebrow { margin-bottom: 1rem; color: var(--maroon); }

/* the paired arch, quietly: the brand's geometric primitive as a marker */
.arch-glyph {
  position: relative;
  display: inline-block;
  flex: none;
  width: 0.92em;
  height: 0.78em;
  top: 0.06em;
}
.arch-glyph::before, .arch-glyph::after {
  content: "";
  position: absolute;
  bottom: 0;
  border-radius: var(--r-pill) var(--r-pill) 0 0;
}
.arch-glyph::before { left: 0; width: 52%; height: 74%; background: var(--crimson); }
.arch-glyph::after { right: 0; width: 44%; height: 100%; background: var(--coral); }
.eyebrow-dark .arch-glyph::before { background: var(--coral); }
.eyebrow-dark .arch-glyph::after { background: var(--bone); }

.prose {
  max-width: 68ch;
  margin-top: 1.9rem;
  display: grid;
  gap: 1.35rem;
}
.prose h3 {
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--maroon);
}

/* ---------- pills & arrows ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--r-pill);
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1;
  padding: 0.72rem 1.5rem;
  border: 1.5px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease,
              border-color 0.18s ease, transform 0.18s ease;
}
.pill-solid { background: var(--crimson); color: var(--white); }
.pill-solid:hover { background: var(--maroon); }
.pill-outline { border-color: var(--ink); color: var(--ink); }
.pill-outline:hover { border-color: var(--crimson); color: var(--crimson); }
.pill-bone { border-color: var(--bone); color: var(--bone); }
.pill-bone:hover { background: var(--bone); color: var(--maroon); }
.pill-lg { padding: 0.9rem 1.9rem; font-size: 1rem; }
.pill-sm { padding: 0.5rem 1.05rem; font-size: 0.875rem; }
.pill:active { transform: translateY(1px); }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }

/* Two kinds of control, and they must not look alike: a pill that goes
   somewhere, and a pill that says plainly it cannot yet. Anything not ready
   is a disabled button, never a link to nowhere. */
button.pill {
  font-family: inherit;
  background: none;
  margin: 0;
  cursor: pointer;
}
button.pill[disabled] { cursor: not-allowed; }
button.pill[disabled]:active { transform: none; }
.pill-muted {
  gap: 0.6rem;
  border-color: var(--hairline);
  color: rgba(28, 30, 33, 0.58);
}
.lang-soon {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--coral);
  border-inline-start: 1px solid var(--hairline);
  padding-inline-start: 0.6rem;
}
.lang-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 500;
  font-size: 1rem;
  color: var(--crimson);
}
.arrow-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem; height: 2rem;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  flex: none;
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}
.arrow-circle svg { width: 1rem; height: 1rem; }
.arrow-link:hover .arrow-circle { transform: translateX(4px); background: var(--crimson); color: var(--white); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--hairline);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.25rem;
}
.lockup { display: inline-flex; align-items: center; gap: 0.65rem; color: var(--ink); }
.mark { display: block; width: 1.9rem; height: 1.9rem; flex: none; }
/* the same paired-arch glyph that marks the section titles */
.mark-left { fill: var(--crimson); }
.mark-right { fill: var(--coral); }
.wordmark {
  font-weight: 800;
  font-size: 1.1875rem;
  letter-spacing: -0.025em;
  color: var(--ink);
}
.wordmark-em { color: var(--crimson); }

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(0.85rem, 2.2vw, 1.75rem);
  font-weight: 500;
  font-size: 0.9375rem;
}
.site-nav > a:not(.pill) { color: var(--ink); }
.site-nav > a:not(.pill):hover { color: var(--crimson); }

.nav-toggle {
  display: none;
  appearance: none;
  background: none;
  border: 1.5px solid var(--ink);
  border-radius: var(--r-pill);
  width: 2.6rem; height: 2.1rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 1.05rem; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  content: "";
  position: relative;
}
.nav-toggle-bar::before { position: absolute; top: -5px; }
.nav-toggle-bar::after { position: absolute; top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { top: 0; transform: rotate(-45deg); }

/* ==========================================================================
   The matrix — the page's signature system
   ========================================================================== */
.mx { display: block; width: 100%; height: auto; overflow: visible; }
.c-obs { fill: var(--crimson); }
.c-est { fill: none; stroke: var(--coral); stroke-width: 1.5; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(2.5rem, 5.5vw, 4.5rem) clamp(2.5rem, 5vw, 4rem);
}
/* the notation field bleeds to the section edges; a mask keeps it off the
   copy column, dissolving rather than stopping */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(100deg, transparent 0%, transparent 42%, #000 64%);
  mask-image: linear-gradient(100deg, transparent 0%, transparent 42%, #000 64%);
}
.hero .hero-grid { position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  align-items: center;
  gap: clamp(2.25rem, 5vw, 4.5rem);
}
.hero-statement {
  margin-top: 1.5rem;
  font-size: 1.125rem;
  max-width: 52ch;
}
.facts {
  margin-top: 2rem;
  border-top: 1px solid var(--hairline);
  display: grid;
  font-variant-numeric: tabular-nums;
}
.fact {
  display: grid;
  grid-template-columns: minmax(0, 11rem) minmax(0, 1fr);
  gap: 0.5rem 1.25rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--hairline);
}
.fact dt {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--crimson);
  align-self: center;
}
.fact dd {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--ink);
  align-self: center;
}
.hero .cta-row { margin-top: 2rem; }
/* The notebook row: a third, quieter call to action under the two loud ones,
   separated by a rule so it does not read as a continuation of them. */
.hero-kit {
  margin-top: 1.9rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
}
.hero-kit-cap {
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--maroon);
}
.hero-kit .lang-row { margin-top: 0.9rem; }

.hero-pattern-svg { display: block; width: 100%; height: 100%; }
.hero-pattern-svg text {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}
.hc { fill: var(--crimson); }
.hc-em { fill: var(--maroon); font-weight: 500; }

/* ---------- partner band ---------- */
.partners { padding-block: clamp(1.25rem, 3vw, 2rem); }
.partners .shell {
  border-block: 1px solid var(--hairline);
  padding-block: clamp(1.1rem, 2.6vw, 1.6rem);
}
.partner-groups {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1.75rem clamp(2.5rem, 6vw, 5rem);
}
/* flex-grow set to each crop's natural width keeps both groups at one scale */
.partner-group { display: grid; gap: 30px; }
.partner-group:nth-child(1) { flex: 384 1 0; max-width: 384px; }
.partner-group:nth-child(2) { flex: 612 1 0; max-width: 612px; }
.partners-cap {
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  opacity: 0.7;
}
.partner-strip { display: block; width: 100%; height: auto; }

/* ---------- progressive disclosure ---------- */
.disclose { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.disclose + p { margin-top: 0.15rem; }
/* consecutive disclosures sit flush and share one rule, rather than stacking
   four hairlines within a couple of centimetres */
.prose .disclose + .disclose { margin-top: -1.35rem; border-top: 0; }
summary { list-style: none; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
.disclose > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--crimson);
}
.disclose > summary:hover { color: var(--maroon); }
.sum-mark {
  position: relative;
  width: 0.85rem; height: 0.85rem;
  flex: none;
}
.sum-mark::before, .sum-mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.sum-mark::before { top: 50%; left: 0; width: 100%; height: 1.5px; transform: translateY(-50%); }
.sum-mark::after { left: 50%; top: 0; height: 100%; width: 1.5px; transform: translateX(-50%); }
details[open] > summary .sum-mark::after { transform: translateX(-50%) scaleY(0); opacity: 0; }
.disclose-body { padding-bottom: 1.1rem; display: grid; gap: 1rem; }
details[open] > .disclose-body,
details[open] > .acc-body,
details[open] > .p-bio { animation: unfold 0.25s ease both; }

@keyframes unfold {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: none; }
}

/* ---------- stats ---------- */
.stats {
  margin-top: clamp(2.5rem, 5vw, 3.75rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
}
.stat { padding: 1.5rem 1.5rem 0 0; border-right: 1px solid var(--hairline); }
.stat:last-child { border-right: 0; }
.stat + .stat { padding-left: 1.75rem; }
.stat-fig {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.1rem, 4.4vw, 3.1rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--crimson);
}
.stat dd { margin-top: 0.85rem; font-size: 0.9375rem; max-width: 30ch; }

/* ---------- photo bands ---------- */
.band { margin: 0; }
/* The frame takes the photographs' own 3:2 ratio, so nothing is cropped —
   the whole image is shown at full height. */
.band-frame {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--maroon);
  border-radius: var(--arch-lg) var(--arch-lg) 0 0;
}
.band-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.band-duo { filter: url(#sb-duotone); transition: opacity 0.4s ease; }
.band:hover .band-duo,
.band:focus-within .band-duo { opacity: 0; }
/* credit only: with the captions gone the bar right-aligns its one item */
.band-bar {
  display: flex;
  justify-content: flex-end;
  background: var(--maroon);
  color: var(--bone);
  padding: 0.7rem var(--gutter);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  line-height: 1.5;
}
.band-credit { color: var(--coral); flex: none; }

/* ---------- why compete ---------- */
#why .prose { margin-top: 0.25rem; }
.wc { margin-top: clamp(2rem, 4vw, 2.75rem); }
.wc-panels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  /* column gap only: the vertical rhythm inside a panel is set by the title
     and caption margins, not by a grid row gap */
  column-gap: clamp(1.5rem, 4vw, 3rem);
  row-gap: 0;
  align-items: start;
}
/* Panel three carries the argument, so it keeps the wider column and the
   crimson rule. Subgrid keeps titles, art and captions on shared rows even
   when a caption wraps to an extra line. */
@supports (grid-template-rows: subgrid) {
  @media (min-width: 941px) {
    .wc-panels { grid-template-rows: auto auto auto; }
    .wc-panel { display: grid; grid-row: span 3; grid-template-rows: subgrid; }
  }
}
.wc-panel { padding-top: 1.1rem; border-top: 1px solid var(--hairline); }
.wc-emph { border-top-color: var(--crimson); }
.wc-art { max-width: 15rem; }
.wc-title {
  font-weight: 500;
  font-size: 1.0625rem;
  color: var(--maroon);
  margin-bottom: 1.1rem;
}
.wc-emph .wc-title { color: var(--crimson); }
.wc-cap { margin-top: 0.65rem; font-size: 0.8125rem; line-height: 1.5; max-width: 15rem; }

/* ---------- what makes it different ---------- */
.points { margin-top: clamp(2.25rem, 4.5vw, 3.25rem); border-top: 1px solid var(--ink); }
.point {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  align-items: start;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--hairline);
  transition: background-color 0.2s ease;
}
.point-icon { display: block; width: 1.9rem; height: 1.9rem; margin-top: 0.15rem; }
.point-icon svg { display: block; width: 100%; height: 100%; }
.i-fill { fill: var(--crimson); }
.i-line { fill: none; stroke: var(--crimson); stroke-width: 1.3; }
.point-text { max-width: 78ch; font-size: 1rem; }

/* ---------- dark modules ---------- */
.dark-module {
  position: relative;
  overflow: hidden;
  background: var(--maroon);
  color: var(--bone);
  border-radius: var(--arch-md) var(--arch-md) var(--r-card) var(--r-card);
  padding: clamp(2rem, 4.5vw, 3.5rem);
}
.dark-body {
  margin-top: 1.35rem;
  max-width: 62ch;
  color: var(--on-dark);
  font-size: 1rem;
}

/* ---------- how it works: three steps ---------- */
/* A sequence, not a topology. The point is that code moves and data does not,
   which is a matter of order — so the section is an ordered list, in real
   text, with a rule and a chevron carrying the direction. */
.flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(2.25rem, 4.5vw, 3.25rem);
  counter-reset: none;
}
.flow-step {
  position: relative;
  padding-top: 1.6rem;
  border-top: 1px solid var(--on-dark-line);
}
/* the chevron sits on the rule, pointing to the next step */
.flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: -0.32rem;
  right: calc(clamp(1.5rem, 4vw, 3rem) / -2 - 0.2rem);
  width: 0.62rem;
  height: 0.62rem;
  border-top: 1.5px solid var(--coral);
  border-right: 1.5px solid var(--coral);
  transform: rotate(45deg);
}
.flow-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--coral);
}
.flow-name {
  margin-top: 0.7rem;
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--bone);
}
.flow-line {
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--on-dark);
}
/* the one thing the flow does not show: the data staying put */
.flow-rule {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: clamp(2rem, 4vw, 2.75rem);
  padding-top: 1.4rem;
  border-top: 1px solid var(--on-dark-line);
  font-weight: 500;
  font-size: 1.0625rem;
  color: var(--bone);
}
/* the page's single --sky moment: the microdata, at rest */
.flow-rest {
  flex: none;
  width: 2.55rem;
  height: 1.05rem;
  background: var(--sky);
  -webkit-mask-image:
    repeating-linear-gradient(90deg, #000 0 0.45rem, transparent 0.45rem 0.7rem),
    repeating-linear-gradient(180deg, #000 0 0.45rem, transparent 0.45rem 0.7rem);
  -webkit-mask-composite: source-in;
  mask-image:
    repeating-linear-gradient(90deg, #000 0 0.45rem, transparent 0.45rem 0.7rem),
    repeating-linear-gradient(180deg, #000 0 0.45rem, transparent 0.45rem 0.7rem);
  mask-composite: intersect;
}

/* ---------- data table ---------- */
.table-wrap { margin-top: clamp(2.25rem, 4.5vw, 3.25rem); }
.dt {
  width: 100%;
  font-variant-numeric: tabular-nums;
  border-top: 1px solid var(--ink);
}
.dt th, .dt td { text-align: right; padding: 0.85rem 0.75rem; vertical-align: baseline; }
.dt thead th {
  font-weight: 500;
  font-size: 0.8125rem;
  line-height: 1.3;
  color: var(--maroon);
  border-bottom: 1px solid var(--ink);
  cursor: default;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.dt tbody th {
  text-align: left;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--ink);
  white-space: nowrap;
  padding-left: 0;
}
.dt tbody td {
  font-family: var(--mono);
  font-size: 0.9375rem;
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-soft);
  transition: color 0.18s ease, background-color 0.18s ease;
}
.dt tbody tr:last-child td { border-bottom: 1px solid var(--hairline); }
.dt .dt-word { font-size: 0.8125rem; letter-spacing: 0.03em; text-transform: uppercase; }
.dt-corner { border-bottom: 1px solid var(--ink); }
/* reading a column: it raises to crimson while the others recede */
.dt[data-hot] tbody td { color: rgba(28, 30, 33, 0.66); }
.dt[data-hot] thead th { color: rgba(90, 15, 15, 0.66); }
.dt[data-hot="2"] [data-c="2"], .dt[data-hot="3"] [data-c="3"],
.dt[data-hot="4"] [data-c="4"] { color: var(--crimson); }
.dt[data-hot="2"] thead [data-c="2"], .dt[data-hot="3"] thead [data-c="3"],
.dt[data-hot="4"] thead [data-c="4"] {
  color: var(--crimson);
  border-bottom-color: var(--crimson);
}
.dt-cards { display: none; }

/* ---------- starter kit ---------- */
.kit-actions { margin-top: clamp(1.75rem, 3.5vw, 2.5rem); }
.kit-langs-note {
  margin-top: 1.35rem;
  font-size: 0.875rem;
  color: rgba(28, 30, 33, 0.66);
  max-width: 62ch;
}

/* ---------- accordion ---------- */
.accordion { margin-top: clamp(2rem, 4vw, 3rem); border-top: 1px solid var(--ink); }
.acc { border-bottom: 1px solid var(--hairline); }
.acc > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0;
  color: var(--maroon);
  transition: color 0.18s ease;
}
.acc > summary:hover { color: var(--crimson); }
.acc-title { font-weight: 500; font-size: 1.1875rem; }
.acc-body { padding-bottom: 1.4rem; }
.ruleset { display: grid; gap: 0.7rem; max-width: 72ch; }
.ruleset li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.9375rem;
}
.ruleset li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 0.5rem; height: 0.5rem;
  background: var(--crimson);
}
.rules-note {
  margin-top: 1.75rem;
  font-size: 0.9375rem;
  max-width: 66ch;
}

/* ---------- recognition ---------- */
.rec-grid {
  margin-top: clamp(2.25rem, 4.5vw, 3.25rem);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}
.rec-card {
  border: 1px solid var(--hairline);
  border-radius: var(--r-card) var(--arch-md) var(--r-card) var(--r-card);
  padding: 1.5rem 1.4rem 1.6rem;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.rec-card:hover { border-color: var(--crimson); transform: translateY(-3px); }
.rec-card h3, .rec-card h4 {
  font-weight: 500;
  font-size: 1.0625rem;
  line-height: 1.3;
  color: var(--maroon);
}
.rec-card p { margin-top: 0.55rem; font-size: 0.9375rem; line-height: 1.55; }

/* the highlighted prize module: the grand prize as one prominent line, then
   the three per-instrument skills the single ranking is the mean of */
.rec-module { overflow: visible; }
.grand-prize {
  margin-top: clamp(2.25rem, 4.5vw, 3.25rem);
  padding: clamp(1.4rem, 3vw, 2rem) clamp(1.5rem, 3vw, 2.1rem);
  border: 1px solid var(--coral);
  border-radius: var(--r-card) var(--arch-md) var(--r-card) var(--r-card);
  background: rgba(255, 123, 104, 0.08);
  font-weight: 500;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  line-height: 1.35;
  color: var(--bone);
}
/* Subordinate to the grand prize, and visibly so: a hairline border instead of
   the coral one, no wash behind it, and a step down in size. */
.roots-prize {
  margin-top: 1rem;
  border-color: var(--on-dark-line);
  background: none;
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  color: var(--on-dark);
}
.grand-prize-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 0.5rem;
}
.rec-grid-dark {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.rec-card-dark { border-color: var(--on-dark-line); }
.rec-card-dark:hover { border-color: var(--coral); }
.rec-card-dark h3, .rec-card-dark h4 { color: var(--bone); }
.rec-card-dark p { color: var(--on-dark); }

/* the second grid — forms of recognition rather than prize categories —
   sits below its own sub-head, at its original two-column count */
.rec-subhead {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  padding-top: clamp(1.75rem, 3.5vw, 2.5rem);
  border-top: 1px solid var(--on-dark-line);
  font-weight: 500;
  font-size: 1.0625rem;
  color: var(--bone);
}

/* ---------- team ---------- */
.team {
  margin-top: clamp(2.25rem, 4.5vw, 3.25rem);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 3.25rem);
}
.team-group-head {
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--crimson);
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--ink);
}
.person { border-bottom: 1px solid var(--hairline); }
.person > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.15rem 1rem;
  padding: 0.95rem 0;
  color: var(--maroon);
  transition: color 0.18s ease;
}
.person > summary:hover { color: var(--crimson); }
.p-name { font-weight: 500; font-size: 1.0625rem; }
.p-aff {
  grid-column: 1;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  opacity: 0.66;
}
.person .sum-mark { grid-column: 2; grid-row: 1 / span 2; color: var(--crimson); }
.p-bio {
  padding-bottom: 1.1rem;
  font-size: 0.9375rem;
  max-width: 58ch;
  color: var(--ink);
}

/* ---------- the Exchange: the page's single bone surface ---------- */
.bone-module {
  background: var(--bone);
  border-radius: var(--arch-md) var(--arch-md) var(--r-card) var(--r-card);
  padding: clamp(2rem, 4.5vw, 3.5rem);
}
.ex-body { margin-top: 1.35rem; max-width: 62ch; font-size: 1rem; }
.bone-module .arrow-link { margin-top: 1.9rem; }

/* ---------- closing CTA ---------- */
.cta-module { padding-block: clamp(2.5rem, 5vw, 4rem); }
/* The one notation texture on the page. It is bounded to the empty right of
   the module so it never sits behind body copy — on narrow screens, where the
   copy runs full width, it is dropped entirely. */
.binary-texture {
  position: absolute;
  inset: -0.5rem -0.5rem -0.5rem 54%;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 2.05;
  letter-spacing: 0.26em;
  word-spacing: 0.5em;
  color: rgba(244, 237, 228, 0.05);
  user-select: none;
  overflow: hidden;
  pointer-events: none;
}
.cta-module::after {
  content: "";
  position: absolute;
  inset: 0 0 0 54%;
  background: var(--grad);
  opacity: 0.18;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 65%);
  mask-image: linear-gradient(90deg, transparent, #000 65%);
  pointer-events: none;
}
.cta-state { position: relative; z-index: 1; }
.countdown {
  margin-top: 1.75rem;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--bone);
}
.cd-static {
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  color: var(--coral);
}
.cd-grid { display: flex; flex-wrap: wrap; gap: 0.75rem 1.75rem; }
.cd-unit { display: grid; gap: 0.25rem; }
.cd-num {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bone);
}
.cd-lab {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--coral);
}
.cta-module .pill { margin-top: 2rem; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--bone);
  padding-block: 3.5rem 2.5rem;
  font-size: 0.875rem;
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 2rem;
}
.lockup-footer .wordmark { color: var(--bone); }
.lockup-footer .wordmark-em { color: var(--coral); }
.lockup-footer .mark-left { fill: var(--coral); }
.lockup-footer .mark-right { fill: var(--bone); }

/* Stanford Digital Economy Lab, reversed: the two-tone cardinal mark reads as
   a light silhouette with its accent blocks held back a step. */
.del-lockup { display: block; }
.del-lockup svg {
  display: block;
  height: 2.15rem;
  width: auto;
  fill: var(--bone);
  opacity: 0.82;
  transition: opacity 0.18s ease;
}
.del-lockup svg .del-b { fill: var(--coral); }
.del-lockup:hover svg { opacity: 1; }


.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  margin-top: 2.5rem;
  color: rgba(244, 237, 228, 0.72);
}
.footer-base a { color: var(--coral); }
.footer-compute {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.footer-compute a { display: inline-flex; align-items: center; }
.modal-mark {
  display: block;
  height: 0.95rem;
  width: auto;
  opacity: 0.92;
  transition: opacity 0.18s ease;
}
.footer-compute a:hover .modal-mark { opacity: 1; }

/* ==========================================================================
   Motion. The budget: one hero reveal, one reveal per infographic, quiet
   section entries, hover states, accordion unfolds. Nothing else moves.
   ========================================================================== */
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
html.js .hero-copy > * { animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) backwards; }
html.js .hero-copy > h1 { animation-delay: 0.04s; }
html.js .hero-copy > .hero-statement { animation-delay: 0.14s; }
html.js .hero-copy > .facts { animation-delay: 0.24s; }
html.js .hero-copy > .cta-row { animation-delay: 0.34s; }
html.js .hero-copy > .hero-kit { animation-delay: 0.44s; }

html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
html.js .reveal.in { opacity: 1; transform: none; }

/* why compete: the three panels resolve in sequence */
html.js .wc-panel { opacity: 0; transform: translateY(10px); }
html.js .wc.in .wc-panel {
  animation: rise 0.42s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: calc((var(--i, 0)) * 0.22s);
}
html.js .wc-panel[data-step="1"] { --i: 0; }
html.js .wc-panel[data-step="2"] { --i: 1; }
html.js .wc-panel[data-step="3"] { --i: 2; }


@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html.js .reveal, html.js .wc-panel { opacity: 1; transform: none; }
  /* the duotone is the resting state; no reveal on hover */
  .band:hover .band-duo, .band:focus-within .band-duo { opacity: 1; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-bg { display: none; }
  .h1-tag { max-width: none; }
  .wc-panels { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .wc-art { max-width: 13rem; }
  .rec-grid-dark { grid-template-columns: minmax(0, 1fr); }
  .team { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: minmax(0, 1fr); }
  .stat { border-right: 0; border-bottom: 1px solid var(--hairline); padding: 1.25rem 0; }
  .stat + .stat { padding-left: 0; }
  .stat:last-child { border-bottom: 0; }
  .flow { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .flow-step { padding-bottom: 1.6rem; }
  .flow-step:last-child { padding-bottom: 0; }
  .flow-step:not(:last-child)::after { display: none; }
}

@media (max-width: 760px) {
  .point { grid-template-columns: 2.25rem minmax(0, 1fr); gap: 0.75rem 1rem; }
  .point-icon { width: 1.6rem; height: 1.6rem; }
  .band-bar { font-size: 0.625rem; }
  .rec-grid { grid-template-columns: minmax(0, 1fr); }
  .binary-texture, .cta-module::after { display: none; }

  /* the instrument table becomes four stacked cards */
  .dt { display: none; }
  .dt-cards { display: grid; gap: 1.25rem; }
  .dt-card {
    border: 1px solid var(--hairline);
    border-radius: var(--r-card) var(--arch-md) var(--r-card) var(--r-card);
    padding: 1.25rem 1.35rem;
  }
  .dt-card h3 {
    font-weight: 500;
    font-size: 1.0625rem;
    color: var(--maroon);
    padding-bottom: 0.7rem;
    border-bottom: 1px solid var(--hairline);
  }
  .dt-card dl { font-variant-numeric: tabular-nums; }
  .dt-card dl > div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--hairline-soft);
  }
  .dt-card dl > div:last-child { border-bottom: 0; }
  .dt-card dt { font-size: 0.8125rem; }
  .dt-card dd { font-family: var(--mono); font-size: 0.9375rem; color: var(--crimson); }
  .dt-card .dt-word { font-size: 0.75rem; letter-spacing: 0.04em; text-transform: uppercase; }

  html.js .nav-toggle { display: inline-flex; }
  html.js .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem var(--gutter) 1.5rem;
    gap: 1.1rem;
  }
  html.js .site-nav.open { display: flex; }
  .header-row { position: relative; }
}

@media (max-width: 420px) {
  .fact { grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
}