:root {
  color-scheme: light;
  --ink: #172033;
  --ink-soft: #536074;
  --ink-muted: #7d8797;
  --paper: #f8faf7;
  --surface: #ffffff;
  --line: rgba(23, 32, 51, 0.14);
  --accent: #0f8f9e;
  --accent-strong: #0a6570;
  --signal: #f06f38;
  --blue: #265bba;
  --shadow: 0 24px 70px rgba(29, 44, 66, 0.16);
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--paper);
  letter-spacing: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: var(--header-height);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(96px, 1fr);
  align-items: center;
  gap: 28px;
  padding: 0 clamp(18px, 4vw, 56px);
  color: #f7fbff;
  transition:
    background 220ms ease,
    color 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(248, 250, 247, 0.92);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 12px 38px rgba(23, 32, 51, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  font-weight: 760;
  letter-spacing: 0;
}

.brand-mark {
  width: 18px;
  aspect-ratio: 1;
  border: 2px solid currentColor;
  transform: rotate(45deg);
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  font-size: 0.92rem;
  color: currentColor;
}

.site-nav a {
  opacity: 0.78;
  transition: opacity 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  opacity: 1;
}

.nav-action {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 17px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 720;
}

.hero {
  position: relative;
  min-height: calc(100svh - 44px);
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-height) + 34px) clamp(18px, 5vw, 72px) 34px;
  background: #111722;
  color: #f7fbff;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -3;
  background-image: url("assets/hero-overview.png");
  background-size: cover;
  background-position: 58% 48%;
  transform: scale(1.045);
  transition: transform 800ms ease;
}

.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(10, 17, 31, 0.96) 0%, rgba(10, 17, 31, 0.82) 35%, rgba(10, 17, 31, 0.34) 70%, rgba(10, 17, 31, 0.18) 100%),
    linear-gradient(0deg, rgba(10, 17, 31, 0.78) 0%, rgba(10, 17, 31, 0.1) 44%, rgba(10, 17, 31, 0.52) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 26vh;
  z-index: -1;
  background: linear-gradient(0deg, #111722 0%, rgba(17, 23, 34, 0) 100%);
  pointer-events: none;
}

.hero-content {
  width: min(680px, 100%);
  padding-bottom: clamp(34px, 8vh, 96px);
}

.eyebrow,
.section-kicker,
.result-label {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 820;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #79e0ec;
}

h1,
h2,
h3,
p,
dl,
dd,
ol,
pre {
  margin-top: 0;
}

h1 {
  margin-bottom: 14px;
  font-size: clamp(4rem, 13vw, 9.4rem);
  line-height: 0.88;
  letter-spacing: 0;
}

.hero-subtitle {
  max-width: 650px;
  margin-bottom: 18px;
  font-size: clamp(1.38rem, 3vw, 2.65rem);
  line-height: 1.04;
  font-weight: 760;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 610px;
  color: rgba(247, 251, 255, 0.78);
  font-size: clamp(1rem, 1.35vw, 1.18rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(247, 251, 255, 0.35);
  color: #f7fbff;
  font-weight: 760;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(247, 251, 255, 0.8);
}

.button.primary {
  color: #08262c;
  background: #7ee4ed;
  border-color: #7ee4ed;
}

.button.disabled {
  color: rgba(247, 251, 255, 0.56);
  cursor: default;
}

.button.disabled:hover {
  transform: none;
  border-color: rgba(247, 251, 255, 0.35);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: min(1040px, 100%);
  margin: 0;
  background: rgba(247, 251, 255, 0.2);
  border: 1px solid rgba(247, 251, 255, 0.2);
}

.hero-stats div {
  padding: clamp(16px, 2.2vw, 24px);
  background: rgba(9, 16, 28, 0.58);
  backdrop-filter: blur(16px);
}

.hero-stats dt {
  margin-bottom: 8px;
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  font-weight: 820;
  line-height: 1;
}

.hero-stats dd {
  margin: 0;
  color: rgba(247, 251, 255, 0.7);
  font-size: 0.92rem;
  line-height: 1.45;
}

.section {
  padding: clamp(74px, 10vw, 132px) clamp(18px, 5vw, 72px);
}

.intro-section {
  background: #111722;
  color: #f7fbff;
}

.intro-grid,
.split-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(0, 1.22fr);
  align-items: center;
  gap: clamp(34px, 5vw, 72px);
}

.section-copy h2,
.dataset-header h2,
.results-heading h2 {
  margin-bottom: 22px;
  font-size: clamp(2rem, 4.7vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.section-copy p,
.dataset-header p,
.results-heading p {
  max-width: 670px;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  line-height: 1.76;
}

.intro-section .section-copy p {
  color: rgba(247, 251, 255, 0.72);
}

.intro-section .section-kicker {
  color: #79e0ec;
}

.figure-panel {
  margin: 0;
}

.figure-panel img {
  width: 100%;
  border: 1px solid rgba(23, 32, 51, 0.12);
  box-shadow: var(--shadow);
}

.intro-section .figure-panel img {
  border-color: rgba(247, 251, 255, 0.12);
}

figcaption {
  margin-top: 14px;
  color: var(--ink-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.intro-section figcaption {
  color: rgba(247, 251, 255, 0.58);
}

.thesis-section {
  background: #f4f7f3;
}

.wide-heading {
  width: min(1180px, 100%);
  margin-bottom: clamp(34px, 5vw, 64px);
  font-size: clamp(2rem, 5vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.principle-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.principle {
  min-height: 260px;
  padding: clamp(20px, 2.5vw, 34px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.42);
}

.principle span {
  display: block;
  margin-bottom: 72px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 820;
}

.principle h3,
.modality h3,
.result h3 {
  margin-bottom: 12px;
  font-size: clamp(1.15rem, 1.8vw, 1.56rem);
  line-height: 1.12;
  letter-spacing: 0;
}

.principle p,
.modality p,
.result p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.65;
}

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

.pipeline-section .split-layout {
  grid-template-columns: minmax(270px, 0.72fr) minmax(0, 1.28fr);
}

.step-list {
  display: grid;
  gap: 12px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.step-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  color: var(--ink-soft);
  line-height: 1.55;
}

.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  aspect-ratio: 1;
  color: #ffffff;
  background: var(--blue);
  font-weight: 820;
}

.pipeline-figure img {
  box-shadow: 0 22px 56px rgba(12, 42, 82, 0.14);
}

.dataset-section {
  background: #ecf3f0;
}

.dataset-header,
.results-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.55fr);
  align-items: end;
  gap: clamp(24px, 4vw, 72px);
  margin-bottom: clamp(34px, 5vw, 58px);
}

.modality-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid rgba(23, 32, 51, 0.18);
  border-left: 1px solid rgba(23, 32, 51, 0.18);
}

.modality {
  min-height: 190px;
  padding: clamp(20px, 2.5vw, 30px);
  border-right: 1px solid rgba(23, 32, 51, 0.18);
  border-bottom: 1px solid rgba(23, 32, 51, 0.18);
  background: rgba(255, 255, 255, 0.48);
}

.gravity-strip {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin-top: 22px;
  overflow: hidden;
  border: 1px solid rgba(23, 32, 51, 0.16);
  background: var(--surface);
}

.gravity-strip span,
.gravity-strip strong {
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: center;
  border-right: 1px solid rgba(23, 32, 51, 0.1);
  font-size: clamp(0.88rem, 1.5vw, 1.08rem);
  letter-spacing: 0;
}

.gravity-strip span:last-child {
  border-right: 0;
}

.gravity-strip strong {
  color: #ffffff;
  background: var(--accent-strong);
}

.sample-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.55fr) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 54px);
  align-items: start;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid rgba(23, 32, 51, 0.16);
}

.sample-layout h3 {
  margin-bottom: 10px;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.1;
}

.sample-layout p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.65;
}

.sample-layout pre,
.citation-box {
  margin: 0;
  overflow-x: auto;
  padding: clamp(18px, 2.6vw, 28px);
  color: #e9fbff;
  background: #111722;
  border: 1px solid rgba(23, 32, 51, 0.16);
  font-size: 0.9rem;
  line-height: 1.55;
}

.results-section {
  background: #141a24;
  color: #f7fbff;
}

.results-section .section-kicker {
  color: #79e0ec;
}

.results-heading p {
  color: rgba(247, 251, 255, 0.68);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(247, 251, 255, 0.16);
  border-left: 1px solid rgba(247, 251, 255, 0.16);
}

.result {
  min-height: 380px;
  padding: clamp(22px, 3vw, 36px);
  border-right: 1px solid rgba(247, 251, 255, 0.16);
  border-bottom: 1px solid rgba(247, 251, 255, 0.16);
  background: rgba(255, 255, 255, 0.03);
}

.result p {
  color: rgba(247, 251, 255, 0.68);
}

.result-label {
  color: #79e0ec;
}

.metric-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 26px;
}

.metric-pair span {
  padding: 14px;
  border: 1px solid rgba(247, 251, 255, 0.15);
  color: rgba(247, 251, 255, 0.64);
}

.metric-pair b {
  display: block;
  color: #ffffff;
  font-size: 1.5rem;
  line-height: 1.1;
}

.comparison {
  margin-top: 24px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid rgba(247, 251, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
}

.comparison-row {
  display: grid;
  grid-template-columns: minmax(150px, 220px) minmax(0, 1fr) 82px;
  align-items: center;
  gap: 18px;
  margin-bottom: 16px;
}

.comparison-row span:first-child,
.comparison-row strong {
  font-weight: 760;
}

.bar-track {
  height: 12px;
  background: rgba(247, 251, 255, 0.12);
  overflow: hidden;
}

.bar-track span {
  display: block;
  width: var(--value);
  height: 100%;
  background: linear-gradient(90deg, #79e0ec, #f6b36b);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 900ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.comparison.is-visible .bar-track span {
  transform: scaleX(1);
}

.comparison p {
  margin: 8px 0 0;
  color: rgba(247, 251, 255, 0.58);
}

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

.release-grid,
.citation-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.74fr) minmax(0, 1.26fr);
  align-items: start;
  gap: clamp(32px, 5vw, 72px);
}

.release-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button.dark {
  color: #ffffff;
  background: var(--ink);
  border-color: var(--ink);
}

.button.ghost {
  color: var(--ink);
  border-color: rgba(23, 32, 51, 0.24);
}

.button.ghost:hover,
.button.ghost:focus-visible {
  border-color: rgba(23, 32, 51, 0.7);
}

.release-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.release-list article {
  min-height: 220px;
  padding: clamp(20px, 2.6vw, 32px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #f5f8f4;
}

.release-list span {
  display: block;
  margin-bottom: 42px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 820;
}

.release-list h3 {
  margin-bottom: 10px;
  font-size: clamp(1.15rem, 1.7vw, 1.45rem);
  line-height: 1.12;
}

.release-list p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.citation-section {
  background: #eef4f6;
}

.citation-box {
  color: #edfaff;
  background: #101620;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: rgba(247, 251, 255, 0.68);
  background: #101620;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 650ms ease,
    transform 650ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal,
  .bar-track span {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .intro-grid,
  .split-layout,
  .pipeline-section .split-layout,
  .dataset-header,
  .results-heading,
  .sample-layout,
  .release-grid,
  .citation-grid {
    grid-template-columns: 1fr;
  }

  .principle-row,
  .modality-grid,
  .result-grid,
  .release-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-bg {
    background-position: 64% 50%;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(10, 17, 31, 0.96) 0%, rgba(10, 17, 31, 0.78) 55%, rgba(10, 17, 31, 0.32) 100%),
      linear-gradient(0deg, rgba(10, 17, 31, 0.78) 0%, rgba(10, 17, 31, 0.08) 42%, rgba(10, 17, 31, 0.58) 100%);
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 62px;
  }

  .site-header {
    padding-inline: 16px;
  }

  .brand {
    font-size: 0.96rem;
  }

  .nav-action {
    min-height: 34px;
    padding-inline: 14px;
    font-size: 0.86rem;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + 34px);
    padding-bottom: 24px;
  }

  .hero-content {
    padding-bottom: 26px;
  }

  h1 {
    font-size: clamp(2.6rem, 13vw, 3.25rem);
  }

  .hero-subtitle {
    font-size: clamp(1.28rem, 8vw, 2.1rem);
  }

  .hero-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
  }

  .hero-actions .primary {
    grid-column: 1 / -1;
  }

  .button {
    width: 100%;
    min-width: 0;
    padding-inline: 12px;
  }

  .principle-row,
  .modality-grid,
  .result-grid,
  .release-list,
  .gravity-strip {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-stats div {
    padding: 14px;
  }

  .gravity-strip span,
  .gravity-strip strong {
    justify-content: flex-start;
    min-height: 48px;
    padding-inline: 18px;
    border-right: 0;
    border-bottom: 1px solid rgba(23, 32, 51, 0.1);
  }

  .comparison-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .comparison-row strong {
    justify-self: start;
  }

  .site-footer {
    flex-direction: column;
  }
}