:root {
  --ink: #122019;
  --ink-soft: #314039;
  --muted: #66736c;
  --paper: #f7f9f5;
  --surface: #ffffff;
  --line: #dfe6dd;
  --green: #78b255;
  --green-bright: #a8d672;
  --green-dark: #2f7042;
  --green-deep: #10261b;
  --blue: #6088b2;
  --blue-dark: #285b86;
  --orange: #f39a45;
  --yellow: #f5d26f;
  --shadow: 0 24px 70px rgba(25, 48, 35, 0.12);
  --shadow-soft: 0 14px 42px rgba(25, 48, 35, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 15px;
  --container: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
a {
  color: inherit;
}

a {
  text-decoration: none;
}

button {
  font: inherit;
}

::selection {
  color: #0d2116;
  background: var(--green-bright);
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.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;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: white;
  background: var(--green-deep);
  border-radius: 9px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
  background: rgba(249, 251, 247, 0.88);
  border-color: rgba(24, 52, 34, 0.1);
  box-shadow: 0 10px 35px rgba(23, 45, 31, 0.06);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 19px;
  font-weight: 760;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  width: 33px;
  height: 33px;
  grid-template-columns: repeat(2, 1fr);
  overflow: hidden;
  border: 1px solid rgba(17, 39, 27, 0.18);
  border-radius: 9px;
  background: var(--surface);
  box-shadow: 0 5px 16px rgba(30, 57, 39, 0.1);
}

.brand-mark span {
  display: grid;
  place-items: center;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 8px;
  font-weight: 800;
  line-height: 1;
}

.brand-mark span:nth-child(1) { color: #b36b22; background: #fff3e7; }
.brand-mark span:nth-child(2) { color: #24618c; background: #eaf4fc; }
.brand-mark span:nth-child(3) { color: #3d7b2f; background: #eff8e7; }
.brand-mark span:nth-child(4) { color: #6e528c; background: #f4eefb; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu > a:not(.button) {
  position: relative;
  color: #45534b;
  font-size: 14px;
  font-weight: 650;
}

.nav-menu > a:not(.button)::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--green-dark);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.nav-menu > a:not(.button):hover::after,
.nav-menu > a:not(.button).is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle > span:not(.sr-only) {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-size: 14px;
  font-weight: 750;
  line-height: 1;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button svg {
  width: 18px;
  fill: currentColor;
}

.button-small {
  min-height: 39px;
  padding-inline: 16px;
  border-radius: 10px;
  font-size: 13px;
}

.button-dark {
  color: white;
  background: var(--green-deep);
  box-shadow: 0 8px 20px rgba(16, 38, 27, 0.15);
}

.button-primary {
  color: #102017;
  background: var(--green-bright);
  box-shadow: 0 12px 28px rgba(88, 143, 54, 0.23);
}

.button-primary:hover {
  background: #b6e17e;
  box-shadow: 0 16px 32px rgba(88, 143, 54, 0.28);
}

.button-ghost {
  color: #28382f;
  border-color: rgba(19, 48, 30, 0.18);
  background: rgba(255, 255, 255, 0.58);
}

.button-ghost:hover {
  background: white;
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding: 150px 0 70px;
  background:
    radial-gradient(circle at 85% 12%, rgba(168, 214, 114, 0.29), transparent 31%),
    radial-gradient(circle at 5% 58%, rgba(96, 136, 178, 0.12), transparent 26%),
    linear-gradient(145deg, #fbfcf9 0%, #f4f8f1 56%, #f1f7ec 100%);
}

.hero::before {
  position: absolute;
  top: 76px;
  right: -140px;
  width: 540px;
  height: 540px;
  border: 1px solid rgba(66, 119, 65, 0.13);
  border-radius: 50%;
  content: "";
  box-shadow: inset 0 0 0 45px rgba(255, 255, 255, 0.2), inset 0 0 0 46px rgba(66, 119, 65, 0.08);
}

.hero-noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.23;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E");
}

.hero-grid {
  position: relative;
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1.04fr) minmax(430px, 0.96fr);
  gap: 62px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 29px;
  height: 2px;
  background: var(--green);
}

.hero h1,
.section-heading h2,
.final-copy h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.hero h1 {
  max-width: 690px;
  font-size: clamp(52px, 6.2vw, 82px);
}

.hero h1 em,
.section-heading h2 em,
.final-copy h2 em {
  color: var(--green-dark);
  font-weight: 500;
}

.hero-lead {
  max-width: 660px;
  margin: 30px 0 0;
  color: #536158;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.7;
}

.hero-lead strong {
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 32px;
  color: #6b766f;
  font-size: 13px;
  font-weight: 650;
}

.hero-meta span {
  position: relative;
}

.hero-meta span:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -13px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  content: "";
  background: #9ca69f;
}

.hero-visual {
  position: relative;
  min-width: 0;
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  border-radius: 50%;
  content: "";
  filter: blur(2px);
}

.hero-visual::before {
  top: -38px;
  right: -28px;
  width: 110px;
  height: 110px;
  background: rgba(243, 154, 69, 0.22);
}

.hero-visual::after {
  bottom: -42px;
  left: -28px;
  width: 130px;
  height: 130px;
  background: rgba(96, 136, 178, 0.2);
}

.sequence-window {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: 1px solid rgba(30, 59, 39, 0.15);
  border-radius: 25px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 35px 90px rgba(32, 58, 40, 0.17);
  transform: rotate(1.3deg);
  backdrop-filter: blur(14px);
}

.window-bar {
  display: grid;
  min-height: 54px;
  align-items: center;
  padding: 0 18px;
  border-bottom: 1px solid #e4e9e2;
  color: #839087;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  grid-template-columns: 1fr auto 1fr;
}

.window-bar > div {
  display: flex;
  gap: 6px;
}

.window-bar > div span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d6ddd5;
}

.window-bar > div span:nth-child(1) { background: #ef9b80; }
.window-bar > div span:nth-child(2) { background: #efcf72; }
.window-bar > div span:nth-child(3) { background: #8fc67a; }

.window-bar p {
  margin: 0;
}

.window-bar > span {
  justify-self: end;
}

.sequence-body {
  position: relative;
  min-height: 475px;
  padding: 35px;
  background:
    linear-gradient(rgba(28, 56, 37, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 56, 37, 0.035) 1px, transparent 1px),
    #fbfcfa;
  background-size: 24px 24px;
}

.sequence-grid {
  display: grid;
  width: min(76%, 350px);
  padding: 14px;
  border: 1px solid rgba(36, 74, 46, 0.14);
  border-radius: 16px;
  background: white;
  box-shadow: var(--shadow-soft);
  grid-template-columns: repeat(8, 1fr);
}

.sequence-grid span {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  border-right: 1px solid #edf0ec;
  border-bottom: 1px solid #edf0ec;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: clamp(11px, 1.2vw, 15px);
  font-weight: 800;
}

.base-a { color: #a76024; background: #fff8ef; }
.base-c { color: #2a6f9e; background: #f1f8fd; }
.base-t { color: #488035; background: #f5faef; }
.base-g { color: #745491; background: #faf6fd; }

.feature-card {
  position: absolute;
  width: 190px;
  padding: 16px 17px;
  border: 1px solid rgba(30, 58, 39, 0.14);
  border-radius: 15px;
  box-shadow: 0 15px 35px rgba(26, 50, 34, 0.14);
}

.feature-card p {
  margin: 0;
  color: #617068;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.feature-card strong {
  display: block;
  margin: 4px 0 10px;
  font-family: Georgia, serif;
  font-size: 27px;
  font-style: italic;
  font-weight: 500;
}

.feature-card > div {
  display: flex;
  height: 7px;
  overflow: hidden;
  gap: 3px;
  border-radius: 99px;
}

.feature-card > div span {
  flex: 1;
  border-radius: 99px;
  background: currentColor;
  opacity: 0.2;
}

.feature-card > div span:nth-child(2),
.feature-card > div span:nth-child(4) { opacity: 0.75; }

.feature-invariant {
  right: 25px;
  bottom: 115px;
  color: var(--green-dark);
  background: #eff8e9;
  transform: rotate(-2deg);
}

.feature-spurious {
  right: 72px;
  bottom: 26px;
  color: var(--blue-dark);
  background: #edf5fb;
  transform: rotate(2deg);
}

.ratio-chip {
  position: absolute;
  top: 108px;
  right: 18px;
  padding: 9px 12px;
  border: 1px solid #e5d2b2;
  border-radius: 10px;
  color: #7a5e2d;
  background: #fff8e9;
  box-shadow: 0 10px 24px rgba(57, 48, 29, 0.08);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
}

.ratio-chip span {
  display: inline-grid;
  width: 22px;
  height: 22px;
  margin-right: 5px;
  place-items: center;
  border-radius: 6px;
  color: white;
  background: var(--orange);
  font-family: Georgia, serif;
  font-size: 15px;
  font-style: italic;
}

.metric-strip {
  position: relative;
  display: grid;
  margin-top: 78px;
  overflow: hidden;
  border: 1px solid rgba(28, 60, 38, 0.12);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: 0 16px 45px rgba(29, 53, 37, 0.07);
  grid-template-columns: repeat(4, 1fr);
  backdrop-filter: blur(12px);
}

.metric-strip article {
  position: relative;
  padding: 25px 28px;
}

.metric-strip article:not(:last-child)::after {
  position: absolute;
  top: 22px;
  right: 0;
  bottom: 22px;
  width: 1px;
  content: "";
  background: var(--line);
}

.metric-strip strong {
  display: block;
  color: var(--green-dark);
  font-family: Georgia, serif;
  font-size: 34px;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}

.metric-strip h2 {
  margin: 9px 0 1px;
  font-size: 14px;
  font-weight: 780;
  line-height: 1.45;
}

.metric-strip span {
  color: var(--muted);
  font-size: 11px;
}

.section {
  position: relative;
  padding: 120px 0;
}

.section-light {
  background: var(--surface);
}

.section-tint {
  background: #f0f5ed;
}

.section-dark {
  overflow: hidden;
  color: #eef5ef;
  background:
    radial-gradient(circle at 6% 18%, rgba(126, 183, 89, 0.18), transparent 28%),
    radial-gradient(circle at 96% 75%, rgba(92, 136, 178, 0.18), transparent 29%),
    var(--green-deep);
}

.section-dark::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.3;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

.section-dark > .container {
  position: relative;
}

.section-heading {
  max-width: 830px;
  margin-bottom: 58px;
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.section-kicker span {
  display: inline-grid;
  width: 33px;
  height: 25px;
  place-items: center;
  border: 1px solid rgba(57, 112, 63, 0.24);
  border-radius: 99px;
  font-size: 10px;
}

.section-heading h2,
.final-copy h2 {
  font-size: clamp(42px, 5.2vw, 68px);
}

.section-heading > p:last-child,
.final-copy > p {
  max-width: 760px;
  margin: 25px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.section-heading-light .section-kicker,
.section-heading-light h2 em {
  color: var(--green-bright);
}

.section-heading-light > p:last-child {
  color: #aebbb2;
}

.paper-figure {
  margin: 0;
}

.figure-button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: white;
  box-shadow: var(--shadow-soft);
  cursor: zoom-in;
}

.figure-button img {
  width: 100%;
  height: auto;
  transition: transform 350ms cubic-bezier(.2,.7,.2,1);
}

.figure-button:hover img {
  transform: scale(1.015);
}

.zoom-hint {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 9px;
  color: white;
  background: rgba(12, 28, 18, 0.75);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.06em;
  opacity: 0;
  transform: translateY(5px);
  transition: opacity 180ms ease, transform 180ms ease;
  backdrop-filter: blur(8px);
}

.figure-button:hover .zoom-hint,
.figure-button:focus-visible .zoom-hint {
  opacity: 1;
  transform: translateY(0);
}

.paper-figure figcaption {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.paper-figure figcaption span {
  flex: 0 0 auto;
  color: var(--green-dark);
  font-weight: 800;
}

.wide-figure .figure-button {
  padding: 28px;
  background: #fbfcfa;
}

.shift-cards {
  display: grid;
  margin-top: 58px;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.shift-card {
  min-height: 260px;
  padding: 29px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fbfcfa;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.shift-card:hover {
  border-color: rgba(71, 126, 61, 0.26);
  box-shadow: var(--shadow-soft);
  transform: translateY(-4px);
}

.card-index {
  display: grid;
  width: 40px;
  height: 40px;
  margin-bottom: 38px;
  place-items: center;
  border-radius: 11px;
  color: var(--green-dark);
  background: #eaf5e2;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 800;
}

.shift-card h3,
.abstract-card h3,
.benchmark-card h3,
.protocol h3,
.score-card h3,
.analysis-copy h3,
.citation-card h3 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.shift-card p {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.abstract-card {
  display: grid;
  margin-top: 72px;
  padding: 42px;
  border: 1px solid #dce8d7;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #edf7e8, #f7fbf4 60%, #edf5f8);
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
}

.mini-label {
  margin: 0 0 12px;
  color: var(--green-dark);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.abstract-card > p {
  margin: 0;
  color: #536159;
  font-size: 15px;
}

.figure-on-dark .figure-button {
  padding: 16px;
  border-color: rgba(255,255,255,.12);
  background: white;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
}

.figure-on-dark figcaption {
  color: #a5b4aa;
}

.figure-on-dark figcaption span {
  color: var(--green-bright);
}

.method-steps {
  display: grid;
  padding: 0;
  margin: 62px 0 0;
  list-style: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.method-steps li {
  display: flex;
  min-height: 200px;
  gap: 19px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  background: rgba(255, 255, 255, 0.045);
}

.method-steps li:first-child { border-radius: 18px 0 0 18px; }
.method-steps li:last-child { border-radius: 0 18px 18px 0; }

.method-steps li > span {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  place-items: center;
  border: 1px solid rgba(168, 214, 114, 0.32);
  border-radius: 50%;
  color: var(--green-bright);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 800;
}

.method-steps h3 {
  margin: 3px 0 10px;
  color: white;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.method-steps p {
  margin: 0;
  color: #aebbb2;
  font-size: 13px;
}

.method-specs {
  display: grid;
  margin-top: 28px;
  padding: 25px 28px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  background: rgba(255,255,255,.035);
  grid-template-columns: repeat(4, 1fr);
}

.method-specs div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.method-specs span {
  color: #829187;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.method-specs strong {
  color: #e6eee8;
  font-size: 14px;
}

.benchmark-layout {
  display: grid;
  align-items: start;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 28px;
}

.benchmark-layout > .paper-figure .figure-button {
  padding: 18px;
}

.benchmark-cards {
  display: grid;
  gap: 18px;
}

.benchmark-card {
  padding: 27px;
  border: 1px solid #d8e4d3;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.74);
  box-shadow: var(--shadow-soft);
}

.benchmark-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.benchmark-head span {
  color: var(--green-dark);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.benchmark-head strong {
  display: grid;
  width: 49px;
  height: 49px;
  place-items: center;
  border-radius: 14px;
  color: var(--green-dark);
  background: #e9f4e2;
  font-family: Georgia, serif;
  font-size: 25px;
  font-weight: 500;
}

.benchmark-card > p {
  margin: 11px 0 19px;
  color: var(--muted);
  font-size: 13px;
}

.benchmark-card ul {
  padding: 16px 0 0;
  margin: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.benchmark-card li {
  position: relative;
  padding: 4px 0 4px 17px;
  color: #536058;
  font-size: 12px;
}

.benchmark-card li::before {
  position: absolute;
  top: 12px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  content: "";
  background: var(--green);
}

.benchmark-card-blue .benchmark-head span { color: var(--blue-dark); }
.benchmark-card-blue .benchmark-head strong { color: var(--blue-dark); background: #e8f1f8; }
.benchmark-card-blue li::before { background: var(--blue); }

.protocol {
  display: grid;
  align-items: center;
  margin-top: 56px;
  padding: 34px;
  border: 1px solid #d7e2d3;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.7);
  grid-template-columns: 0.35fr 1fr;
  gap: 40px;
}

.protocol ol {
  display: grid;
  padding: 0;
  margin: 0;
  list-style: none;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.protocol li {
  position: relative;
  padding-left: 36px;
  color: #536159;
  font-size: 12px;
  line-height: 1.45;
}

.protocol li span {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: 8px;
  color: var(--green-dark);
  background: #e9f3e3;
  font-size: 10px;
  font-weight: 800;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.score-card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: #fbfcfa;
  box-shadow: var(--shadow-soft);
}

.score-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--line);
}

.score-heading span {
  color: var(--green-dark);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.score-heading h3 {
  margin-top: 5px;
}

.score-heading > strong {
  color: var(--green-dark);
  font-family: Georgia, serif;
  font-size: 39px;
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1;
}

.bar-chart {
  display: grid;
  gap: 15px;
  margin-top: 27px;
}

.bar-row {
  display: grid;
  align-items: center;
  color: #66736b;
  font-size: 11px;
  grid-template-columns: 76px 1fr 38px;
  gap: 10px;
}

.bar-row > div {
  height: 9px;
  overflow: hidden;
  border-radius: 99px;
  background: #e5eae3;
}

.bar-row i {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: #aeb8b0;
}

.bar-row strong {
  text-align: right;
  font-size: 11px;
}

.bar-row.best {
  color: var(--ink);
  font-weight: 800;
}

.bar-row.best i {
  background: linear-gradient(90deg, var(--green-dark), var(--green));
}

.score-card-blue .score-heading span,
.score-card-blue .score-heading > strong {
  color: var(--blue-dark);
}

.score-card-blue .bar-row.best i {
  background: linear-gradient(90deg, var(--blue-dark), var(--blue));
}

.score-note {
  margin: 25px 0 0;
  padding: 14px 16px;
  border-radius: 12px;
  color: #50604f;
  background: #edf6e8;
  font-size: 12px;
}

.score-note strong {
  color: var(--green-dark);
}

.score-card-blue .score-note {
  background: #eaf2f8;
}

.score-card-blue .score-note strong {
  color: var(--blue-dark);
}

.result-figures {
  display: grid;
  align-items: start;
  margin-top: 62px;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.result-figures .figure-button {
  aspect-ratio: 1.42;
  background: #fbfcfa;
}

.result-figures .figure-button img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.section-analysis {
  background: #f8faf7;
}

.analysis-block {
  display: grid;
  align-items: center;
  margin-top: 80px;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 60px;
}

.analysis-block:first-of-type {
  margin-top: 0;
}

.analysis-block-reverse {
  grid-template-columns: 1.28fr 0.72fr;
}

.analysis-block-reverse .analysis-copy {
  order: 2;
}

.analysis-copy h3 {
  font-size: 30px;
}

.analysis-copy > p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.analysis-copy strong {
  color: var(--green-dark);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .94em;
}

.analysis-block .figure-button {
  padding: 12px;
}

.section-final {
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 80% 0%, rgba(168, 214, 114, 0.2), transparent 30%),
    linear-gradient(135deg, #183526, #0d2116);
}

.section-final::before {
  position: absolute;
  right: -100px;
  bottom: -200px;
  width: 580px;
  height: 580px;
  border: 1px solid rgba(168, 214, 114, 0.13);
  border-radius: 50%;
  content: "";
  box-shadow: inset 0 0 0 70px rgba(168, 214, 114, 0.025), inset 0 0 0 71px rgba(168, 214, 114, 0.1);
}

.final-grid {
  position: relative;
  display: grid;
  align-items: center;
  grid-template-columns: 1fr 0.82fr;
  gap: 80px;
}

.final-copy .section-kicker,
.final-copy h2 em {
  color: var(--green-bright);
}

.final-copy > p {
  color: #abbab0;
}

.final-copy .button {
  margin-top: 30px;
}

.citation-card {
  padding: 29px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.055);
  box-shadow: 0 30px 80px rgba(0,0,0,.16);
  backdrop-filter: blur(12px);
}

.citation-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.citation-card .mini-label {
  color: var(--green-bright);
}

.copy-button {
  padding: 8px 12px;
  border: 1px solid rgba(255,255,255,.17);
  border-radius: 9px;
  color: #dce8df;
  background: rgba(255,255,255,.06);
  font-size: 11px;
  font-weight: 750;
  cursor: pointer;
}

.copy-button:hover {
  background: rgba(255,255,255,.12);
}

.citation-card pre {
  max-width: 100%;
  padding: 19px;
  margin: 22px 0 0;
  overflow-x: auto;
  border-radius: 13px;
  color: #d6e3d9;
  background: rgba(0,0,0,.22);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  line-height: 1.7;
}

.citation-note {
  margin: 14px 0 0;
  color: #809188;
  font-size: 10px;
}

.site-footer {
  padding: 45px 0;
  color: #9aa8a0;
  background: #091810;
}

.footer-inner {
  display: grid;
  align-items: center;
  grid-template-columns: 1fr auto auto;
  gap: 50px;
}

.brand-footer {
  color: white;
}

.footer-inner > div:first-child > p {
  margin: 9px 0 0;
  font-size: 11px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 12px;
  font-weight: 700;
}

.footer-links a:hover {
  color: var(--green-bright);
}

.footer-inner > p {
  margin: 0;
  font-size: 11px;
}

.lightbox {
  width: min(94vw, 1500px);
  max-width: none;
  height: min(92vh, 1000px);
  max-height: none;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 18px;
  color: white;
  background: #0c1811;
  box-shadow: 0 35px 100px rgba(0,0,0,.42);
}

.lightbox::backdrop {
  background: rgba(5, 15, 9, 0.78);
  backdrop-filter: blur(9px);
}

.lightbox-content {
  display: grid;
  height: 100%;
  padding: 40px 28px 22px;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 15px;
}

.lightbox-content img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
  background: white;
}

.lightbox-content p {
  margin: 0;
  color: #b8c5bc;
  font-size: 12px;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  z-index: 2;
  top: 8px;
  right: 10px;
  display: grid;
  width: 34px;
  height: 34px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: white;
  background: rgba(255,255,255,.1);
  font-size: 23px;
  cursor: pointer;
}

.reveal {
  opacity: 1;
  transform: none;
}

.has-js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms cubic-bezier(.2,.7,.2,1);
}

.has-js .reveal[data-delay="1"] { transition-delay: 90ms; }
.has-js .reveal[data-delay="2"] { transition-delay: 180ms; }

.has-js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1040px) {
  .nav-menu { gap: 19px; }
  .hero-grid { grid-template-columns: 1fr 0.88fr; gap: 35px; }
  .hero h1 { font-size: clamp(48px, 6.6vw, 68px); }
  .sequence-body { min-height: 430px; padding: 25px; }
  .feature-card { width: 165px; }
  .benchmark-layout { grid-template-columns: 1fr; }
  .benchmark-cards { grid-template-columns: repeat(2, 1fr); }
  .protocol { grid-template-columns: 1fr; }
  .final-grid { gap: 45px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }

  .nav-menu {
    position: fixed;
    top: 74px;
    right: 16px;
    left: 16px;
    display: grid;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255,255,255,.97);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
    backdrop-filter: blur(18px);
  }

  .nav-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-menu > a:not(.button) {
    padding: 8px 4px;
    font-size: 15px;
  }

  .nav-menu > a:not(.button)::after { display: none; }

  .nav-toggle[aria-expanded="true"] > span:nth-child(2) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] > span:nth-child(3) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(4) { transform: translateY(-6px) rotate(-45deg); }

  .hero { padding-top: 125px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .hero-visual { width: min(100%, 580px); margin: 20px auto 0; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric-strip article:nth-child(2)::after { display: none; }
  .metric-strip article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }

  .shift-cards,
  .method-steps { grid-template-columns: 1fr; }
  .method-steps { gap: 10px; }
  .method-steps li:first-child,
  .method-steps li:last-child,
  .method-steps li { border-radius: 16px; }
  .method-steps li { min-height: auto; }
  .method-specs { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .abstract-card { grid-template-columns: 1fr; gap: 25px; }
  .score-grid { grid-template-columns: 1fr; }
  .analysis-block,
  .analysis-block-reverse { grid-template-columns: 1fr; gap: 30px; }
  .analysis-block-reverse .analysis-copy { order: initial; }
  .final-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 88px 0; }
  .hero { padding: 112px 0 50px; }
  .hero h1 { font-size: clamp(43px, 13vw, 60px); }
  .hero-lead { font-size: 16px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .hero-meta { gap: 8px 20px; }
  .hero-visual { margin-top: 5px; }
  .sequence-window { border-radius: 18px; transform: none; }
  .window-bar { padding: 0 12px; grid-template-columns: 1fr auto; }
  .window-bar p { display: none; }
  .sequence-body { min-height: 380px; padding: 15px; }
  .sequence-grid { width: 83%; padding: 8px; }
  .sequence-grid span { font-size: 10px; }
  .ratio-chip { top: 87px; right: 7px; font-size: 0; }
  .ratio-chip span { margin: 0; }
  .feature-card { width: 145px; padding: 12px; }
  .feature-card strong { font-size: 22px; }
  .feature-invariant { right: 10px; bottom: 98px; }
  .feature-spurious { right: 42px; bottom: 20px; }
  .metric-strip { margin-top: 45px; }
  .metric-strip article { padding: 20px; }
  .metric-strip strong { font-size: 29px; }
  .metric-strip h2 { font-size: 12px; }
  .section-heading { margin-bottom: 42px; }
  .section-heading h2,
  .final-copy h2 { font-size: clamp(38px, 11vw, 52px); }
  .section-heading > p:last-child,
  .final-copy > p { font-size: 16px; }
  .wide-figure .figure-button { padding: 8px; }
  .paper-figure figcaption { display: block; }
  .paper-figure figcaption span { display: block; margin-bottom: 4px; }
  .abstract-card { padding: 27px; }
  .figure-on-dark .figure-button { padding: 6px; }
  .method-specs { grid-template-columns: 1fr; gap: 17px; }
  .benchmark-cards { grid-template-columns: 1fr; }
  .protocol { padding: 25px; }
  .protocol ol { grid-template-columns: 1fr; gap: 16px; }
  .score-card { padding: 24px 20px; }
  .score-heading > strong { font-size: 31px; }
  .bar-row { grid-template-columns: 68px 1fr 36px; }
  .result-figures { grid-template-columns: 1fr; }
  .analysis-block { margin-top: 58px; }
  .analysis-copy h3 { font-size: 25px; }
  .citation-card { padding: 22px; }
  .citation-card pre { padding: 14px; font-size: 9px; }
  .footer-links { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  .reveal { opacity: 1; transform: none; }
}