:root {
  color-scheme: light;

  /* Paper and ink. Warm cream, deep midnight indigo. */
  --paper: #ece4d2;
  --paper-warm: #f3ecdc;
  --paper-deep: #e2d8c2;
  --ink: #14182b;
  --ink-soft: #2a3050;
  --ink-2: #3a4060;
  --muted: #6a7080;
  --muted-dim: #95a0b0;
  --line: rgba(20, 24, 43, 0.12);
  --line-strong: rgba(20, 24, 43, 0.24);

  /* Single luminous accent. Bioluminescent indigo-violet. */
  --accent: #5a48d8;
  --accent-bright: #7a5cff;
  --accent-soft: rgba(90, 72, 216, 0.55);
  --accent-mist: rgba(90, 72, 216, 0.12);

  /* Typography */
  --serif: "Fraunces", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "Menlo", Monaco, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(80% 60% at 88% -8%, rgba(90, 72, 216, 0.06), transparent 60%),
    radial-gradient(80% 60% at -8% 108%, rgba(90, 72, 216, 0.05), transparent 60%),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ----------------------------------------------------------------------
   Header — small corner orientation
   ---------------------------------------------------------------------- */

.site-header {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1240px, calc(100% - 64px));
  margin: 0 auto;
  padding: 28px 0 16px;
}

.brand-small,
.contact-link,
.site-nav a {
  text-decoration: none;
}

.site-nav {
  display: inline-flex;
  gap: 28px;
}

.site-nav a {
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  position: relative;
  padding: 4px 0;
  transition: color 200ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent-soft);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 280ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.brand-small {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand-small-name {
  font-family: var(--serif);
  font-weight: 420;
  font-size: 1.05rem;
  letter-spacing: 0.005em;
  font-variation-settings: "opsz" 14, "SOFT" 60;
}

.brand-small-mark {
  position: relative;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow:
    inset 0 0 0 1px var(--paper),
    0 0 0 2px rgba(90, 72, 216, 0.22),
    0 0 14px rgba(90, 72, 216, 0.35);
}

.contact-link {
  color: var(--ink-2);
  font-size: 0.88rem;
  letter-spacing: 0.01em;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color 200ms ease, border-color 200ms ease;
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--ink);
  border-color: var(--accent-soft);
}

/* ----------------------------------------------------------------------
   Main + figure shell
   ---------------------------------------------------------------------- */

main {
  position: relative;
  z-index: 2;
  width: min(1240px, calc(100% - 64px));
  margin: 0 auto;
}

.fig {
  position: relative;
  margin: 0;
  padding: 56px 0 28px;
}

.fig + .fig {
  border-top: 1px solid var(--line);
}

.fig-caption {
  margin: 24px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  color: var(--muted);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.9rem;
  letter-spacing: 0.005em;
  font-variation-settings: "opsz" 14, "SOFT" 60;
}

.fig-caption em {
  font-style: italic;
}

.fig-label {
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted-dim);
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

.fig-coords {
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted-dim);
  letter-spacing: 0.10em;
  text-transform: lowercase;
  margin-left: auto;
}

/* ----------------------------------------------------------------------
   fig. i — the wordmark
   ---------------------------------------------------------------------- */

.fig-i {
  padding: 88px 0 28px;
}

.wordmark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  font-family: var(--serif);
  font-weight: 420;
  font-size: clamp(4.2rem, 16.5vw, 14rem);
  line-height: 1;
  letter-spacing: -0.032em;
  color: var(--ink);
  font-variation-settings: "opsz" 144, "SOFT" 70;
  user-select: none;
}

.wordmark-letters {
  display: inline-block;
  white-space: nowrap;
}

.wordmark-eye {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* Sized to match the lowercase o-width of the surrounding type.
     The SVG halo extends beyond this box and bleeds into the paper. */
  width: 0.74em;
  height: 0.74em;
  /* Nudge to sit on the same optical line as the lowercase o. */
  transform: translateY(0.16em);
  position: relative;
  overflow: visible;
}

.wordmark-eye svg {
  width: 152%;        /* halo extends beyond the slot */
  height: 152%;
  overflow: visible;
  filter: drop-shadow(0 0 26px rgba(90, 72, 216, 0.16));
}

/* Eye animation: slow halo breathing + pupil glow + occasional blink */
.eye-halo {
  transform-origin: center;
  animation: eye-breathe 6s ease-in-out infinite;
}

.pupil-glow {
  transform-origin: center;
  animation: pupil-pulse 4.6s ease-in-out infinite;
}

.pupil {
  transform-origin: center;
  transition: transform 130ms cubic-bezier(0.45, 0, 0.55, 1);
}

.pupil.blinking {
  transform: scaleY(0.06);
}

@keyframes eye-breathe {
  0%, 100% { transform: scale(1); opacity: 0.92; }
  50%      { transform: scale(1.07); opacity: 1; }
}

@keyframes pupil-pulse {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50%      { transform: scale(1.10); opacity: 1; }
}

/* ----------------------------------------------------------------------
   fig. ii — thesis
   ---------------------------------------------------------------------- */

.fig-ii {
  padding: 80px 0 28px;
}

.display {
  max-width: 1100px;
  margin: 0 0 44px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(3.2rem, 7.6vw, 7.6rem);
  line-height: 0.98;
  letter-spacing: -0.018em;
  color: var(--ink);
  font-variation-settings: "opsz" 144, "SOFT" 80;
  text-wrap: balance;
}

.display-em {
  display: block;
  font-style: italic;
  font-weight: 360;
  color: var(--ink);
  font-variation-settings: "opsz" 144, "SOFT" 100;
}

.intro {
  max-width: 760px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.12rem, 1.55vw, 1.42rem);
  line-height: 1.55;
  font-weight: 400;
  letter-spacing: 0.005em;
}

.intro-em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 460;
  font-variation-settings: "opsz" 24, "SOFT" 90;
  color: var(--ink);
  letter-spacing: 0;
}

/* Drop-cap on the manifesto intro — editorial first-letter treatment */
.intro-dropcap::first-letter {
  float: left;
  font-family: var(--serif);
  font-weight: 380;
  font-variation-settings: "opsz" 144, "SOFT" 95;
  font-size: 4.4em;
  line-height: 0.82;
  padding: 0.04em 0.12em 0 0;
  color: var(--ink);
  letter-spacing: -0.04em;
}

/* ----------------------------------------------------------------------
   Scale-axis figure (fig. ii companion)
   ---------------------------------------------------------------------- */

.scale-axis {
  margin: 56px 0 32px;
  max-width: 880px;
  padding: 24px 0 8px;
}

.scale-axis-track {
  position: relative;
  width: 100%;
  height: 96px;
}

.scale-axis-rule {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(
    90deg,
    var(--line-strong) 0%,
    var(--line-strong) 14%,
    var(--line) 26%,
    var(--line) 100%
  );
  transform: translateY(-0.5px);
}

.scale-axis-tick {
  position: absolute;
  top: 50%;
  width: 1px;
  height: 12px;
  background: var(--line-strong);
  transform: translate(0, -50%);
}

.scale-axis-tick--start { left: 0; }
.scale-axis-tick--end   { right: 0; }

.scale-axis-mark {
  position: absolute;
  top: 50%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  transform: translate(-50%, -50%);
}

.scale-axis-mark--here  { left: 0%; }
.scale-axis-mark--there { left: 100%; transform: translate(-100%, -50%); align-items: flex-end; }

.scale-axis-mark--here  .scale-axis-value,
.scale-axis-mark--here  .scale-axis-label { text-align: left; }
.scale-axis-mark--there .scale-axis-value,
.scale-axis-mark--there .scale-axis-label { text-align: right; }

.scale-axis-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
}

.scale-axis-dot--here {
  background: var(--accent);
  box-shadow:
    0 0 0 4px rgba(122, 92, 255, 0.10),
    0 0 18px rgba(122, 92, 255, 0.45);
  animation: status-pulse 3.6s ease-in-out infinite;
}

.scale-axis-dot--there {
  background: transparent;
  border: 1px solid var(--ink-2);
  opacity: 0.55;
}

.scale-axis-value {
  font-family: var(--serif);
  font-weight: 380;
  font-size: 1.6rem;
  font-variation-settings: "opsz" 60, "SOFT" 80;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1;
}

.scale-axis-mark--there .scale-axis-value {
  color: var(--ink-2);
}

.scale-axis-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  max-width: 220px;
  line-height: 1.4;
}

/* ----------------------------------------------------------------------
   fig. iii — methodology beat
   ---------------------------------------------------------------------- */

.fig-iii {
  padding: 64px 0 28px;
}

.kicker {
  margin: 0 0 22px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.beat-title {
  margin: 0 0 22px;
  max-width: 880px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 4.4vw, 3.6rem);
  line-height: 1.04;
  letter-spacing: -0.008em;
  color: var(--ink);
  font-variation-settings: "opsz" 90, "SOFT" 90;
}

.beat-body {
  max-width: 720px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
  line-height: 1.62;
  font-weight: 400;
}

.beat-em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 460;
  font-variation-settings: "opsz" 24, "SOFT" 90;
  color: var(--ink);
}

/* ----------------------------------------------------------------------
   fig. iv — paired artefacts
   ---------------------------------------------------------------------- */

.fig-iv {
  padding: 64px 0 28px;
}

.paired {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.card {
  position: relative;
  display: block;
  padding: 40px 36px 32px;
  background: var(--paper);
  color: inherit;
  text-decoration: none;
  transition: background 320ms ease, box-shadow 320ms ease;
}

.card-link:hover .card-cta,
.card-link:focus-visible .card-cta {
  color: var(--accent);
}

.card-link:hover .card-cta span,
.card-link:focus-visible .card-cta span {
  transform: translateX(4px);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background:
    radial-gradient(70% 60% at 30% 0%, rgba(90, 72, 216, 0.10), transparent 70%);
  transition: opacity 420ms ease;
}

.card:hover {
  background: var(--paper-warm);
}

.card:hover::after {
  opacity: 1;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 22px;
  padding: 0 0 14px;
  border-bottom: 1px solid var(--line);
}

.card-head .kicker {
  margin: 0;
}

.card-catalog {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--muted-dim);
  text-transform: lowercase;
}

.card-title {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-weight: 420;
  font-size: clamp(1.6rem, 2.6vw, 2.05rem);
  line-height: 1.1;
  letter-spacing: -0.005em;
  color: var(--ink);
  font-variation-settings: "opsz" 60, "SOFT" 80;
}

/* Glyph block — a small visual emblem inside each card */
.card-glyph {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 72px;
  margin: 20px 0 24px;
  padding: 16px 0;
  border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
}

.card-glyph-pulse {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow:
    0 0 0 6px rgba(122, 92, 255, 0.10),
    0 0 22px rgba(122, 92, 255, 0.45);
  animation: status-pulse 3.6s ease-in-out infinite;
}

.card-glyph--pair {
  gap: 14px;
}

.card-glyph-node {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--ink-2);
  background: transparent;
}

.card-glyph--pair .card-glyph-node:nth-child(1) {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(122, 92, 255, 0.5);
}

.card-glyph-arrow {
  position: relative;
  width: 56px;
  height: 1px;
  background: var(--line-strong);
}

.card-glyph-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
  transform: translate(0, -50%) rotate(45deg);
}

.card-foot {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.card-body {
  margin: 0 0 26px;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.6;
}

.card-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
}

.card-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  transition: color 280ms ease;
}

.card-cta span {
  display: inline-block;
  transition: transform 280ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(122, 92, 255, 0.5);
  animation: status-pulse 3.6s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 0.7; transform: scale(0.92); }
  50%      { opacity: 1;   transform: scale(1.08); }
}

.benchmarks {
  list-style: none;
  margin: 6px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.benchmarks li {
  font-family: var(--serif);
  font-weight: 420;
  font-variation-settings: "opsz" 24, "SOFT" 80;
  font-size: 1.02rem;
  color: var(--ink);
  letter-spacing: 0.005em;
  position: relative;
  padding-left: 14px;
}

.benchmarks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(122, 92, 255, 0.55);
}

/* ----------------------------------------------------------------------
   Perturbation pair — the worked example on /evals/
   ---------------------------------------------------------------------- */

.perturbation-pair {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: stretch;
  margin: 44px 0 24px;
  max-width: 1000px;
}

.specimen {
  position: relative;
  padding: 28px 28px 24px;
  background: var(--paper-warm);
  border: 1px solid var(--line-strong);
  border-radius: 1px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.specimen::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 4px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent-soft) 50%,
    transparent 100%
  );
  opacity: 0.5;
}

.specimen-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--line);
}

.specimen-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.10em;
  color: var(--muted-dim);
  text-transform: lowercase;
}

.specimen-tag {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

.specimen-prose {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-variation-settings: "opsz" 24, "SOFT" 70;
  font-size: 1.18rem;
  line-height: 1.55;
  color: var(--ink);
  letter-spacing: -0.005em;
}

.specimen-prose em {
  font-style: italic;
  display: block;
}

.specimen-answer {
  margin: auto 0 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  font-variation-settings: "opsz" 24, "SOFT" 70;
}

.specimen-arrow {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 1.05rem;
}

.specimen-answer em {
  font-style: italic;
  font-weight: 460;
}

.specimen-mark {
  margin-left: auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.specimen-mark--ok {
  background: var(--accent);
  box-shadow: 0 0 10px rgba(122, 92, 255, 0.5);
}

.specimen-mark--fail {
  background: transparent;
  border: 1px solid var(--ink-2);
  opacity: 0.6;
}

.perturbation-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 90px;
}

.perturbation-line {
  width: 1px;
  height: 24px;
  background: linear-gradient(180deg, transparent, var(--line-strong), transparent);
}

.perturbation-line:first-child {
  background: linear-gradient(180deg, transparent, var(--line-strong));
}

.perturbation-line:last-child {
  background: linear-gradient(180deg, var(--line-strong), transparent);
}

.perturbation-word {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 8px 14px;
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
  background: rgba(122, 92, 255, 0.06);
  white-space: nowrap;
}

.specimen-note {
  max-width: 720px;
  margin: 0 0 24px;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 24, "SOFT" 80;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--ink-soft);
  letter-spacing: 0.005em;
}

/* ----------------------------------------------------------------------
   Sub-page layout — for /models/ and /evals/
   ---------------------------------------------------------------------- */

.page-title {
  margin: 0 0 28px;
  max-width: 980px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.8rem, 6.4vw, 5.6rem);
  line-height: 1.0;
  letter-spacing: -0.012em;
  color: var(--ink);
  font-variation-settings: "opsz" 144, "SOFT" 85;
  text-wrap: balance;
}

.page-h2 {
  margin: 0 0 24px;
  max-width: 900px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.0rem, 4vw, 3.0rem);
  line-height: 1.06;
  letter-spacing: -0.005em;
  color: var(--ink);
  font-variation-settings: "opsz" 90, "SOFT" 85;
}

.page-lede {
  max-width: 720px;
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.5vw, 1.32rem);
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: 0.005em;
}

.page-lede .intro-em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 460;
  font-variation-settings: "opsz" 24, "SOFT" 90;
  color: var(--ink);
}

.lede-link,
.page-lede a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color 200ms ease, color 200ms ease;
}

.lede-link:hover,
.lede-link:focus-visible,
.page-lede a:hover,
.page-lede a:focus-visible {
  border-color: var(--accent-soft);
  color: var(--accent);
}

.page-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
}

.benchmark-detail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.benchmark-detail li {
  display: grid;
  grid-template-columns: minmax(180px, 0.4fr) 1fr;
  gap: 32px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.benchmark-name {
  font-family: var(--serif);
  font-weight: 420;
  font-variation-settings: "opsz" 36, "SOFT" 80;
  font-size: 1.32rem;
  color: var(--ink);
  letter-spacing: -0.005em;
  position: relative;
  padding-left: 16px;
}

.benchmark-name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(122, 92, 255, 0.6);
}

.benchmark-desc {
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.5;
}

/* ----------------------------------------------------------------------
   Colophon — inside-back-cover verification plate
   ---------------------------------------------------------------------- */

.colophon {
  margin: 56px 0 0;
  padding: 44px 0 56px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}

.colophon-heading {
  margin: 0 0 32px;
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-dim);
}

.colophon-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

.colophon-key {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 500;
}

.colophon-val {
  margin: 0;
  font-family: var(--serif);
  font-weight: 420;
  font-variation-settings: "opsz" 24, "SOFT" 60;
  font-size: 1.08rem;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: 0.005em;
}

.colophon-val a {
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color 200ms ease;
}

.colophon-val a:hover,
.colophon-val a:focus-visible {
  border-color: var(--accent-soft);
}

/* ----------------------------------------------------------------------
   Footer
   ---------------------------------------------------------------------- */

.site-footer {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 24px;
  width: min(1240px, calc(100% - 64px));
  margin: 0 auto;
  padding: 24px 0 40px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.10em;
}

.footer-coords {
  text-transform: lowercase;
}

/* ----------------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------------- */

@media (max-width: 920px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 40px, 1240px);
  }

  .fig-i { padding-top: 56px; }
  .fig-ii { padding-top: 56px; }

  .wordmark {
    font-size: clamp(3.4rem, 22vw, 11rem);
    letter-spacing: -0.038em;
  }

  .display {
    font-size: clamp(2.5rem, 11vw, 4.6rem);
    line-height: 1.0;
  }

  .beat-title {
    font-size: clamp(1.8rem, 6.4vw, 2.6rem);
  }

  .paired {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 32px 26px 26px;
  }

  .scale-axis {
    margin: 40px 0 24px;
  }

  .scale-axis-track {
    height: auto;
    padding: 16px 0;
  }

  .scale-axis-rule,
  .scale-axis-tick {
    display: none;
  }

  .scale-axis-mark--here,
  .scale-axis-mark--there {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    transform: none;
    margin: 0 0 20px;
    flex-direction: row;
    align-items: center;
    gap: 14px;
  }

  .scale-axis-mark--there { align-items: center; }
  .scale-axis-mark--there .scale-axis-value,
  .scale-axis-mark--there .scale-axis-label {
    text-align: left;
  }

  .scale-axis-label {
    max-width: none;
  }

  .perturbation-pair {
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: none;
  }

  .perturbation-arrow {
    flex-direction: row;
    min-width: 0;
    padding: 4px 0;
  }

  .perturbation-line {
    width: 28px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  }

  .perturbation-line:first-child {
    background: linear-gradient(90deg, transparent, var(--line-strong));
  }

  .perturbation-line:last-child {
    background: linear-gradient(90deg, var(--line-strong), transparent);
  }

  .specimen {
    padding: 22px 22px 20px;
  }

  .specimen-prose {
    font-size: 1.08rem;
  }

  .card-glyph {
    height: 60px;
    margin: 16px 0 20px;
  }

  .intro-dropcap::first-letter {
    font-size: 3.6em;
  }

  .colophon-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
  }

  .fig-caption {
    font-size: 0.85rem;
  }

  .fig-coords {
    margin-left: 0;
  }
}

@media (max-width: 920px) {
  .benchmark-detail li {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 18px 0;
  }
}

@media (max-width: 520px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding-top: 22px;
  }

  .site-nav {
    order: 1;
    gap: 22px;
  }

  .contact-link {
    order: 2;
  }

  .colophon-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------------------------------------
   Scroll-reveal — figures fade up slightly as they enter the viewport.
   Gated on html.motion so the no-JS fallback shows all figures normally.
   ---------------------------------------------------------------------- */

html.motion .fig {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 900ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 900ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

html.motion .fig.reveal-in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 200ms !important;
  }

  html.motion .fig {
    opacity: 1;
    transform: none;
  }
}