:root {
  --ink: #17201c;
  --muted: #5d6b65;
  --line: #d8e2dc;
  --paper: #f7faf8;
  --panel: #ffffff;
  --wash: #e9f5ef;
  --mint: #24a57a;
  --teal: #0e766f;
  --coral: #d85b46;
  --amber: #d39a26;
  --shadow: 0 16px 42px rgba(18, 35, 29, 0.1);
  --content: 1180px;
  --page-x: clamp(20px, 5vw, 72px);
  --section-y: clamp(56px, 7vw, 76px);
  --section-y-tight: clamp(46px, 6vw, 64px);
  --block-gap: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

main {
  overflow-x: clip;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 12px var(--page-x);
  background: rgba(247, 250, 248, 0.9);
  border-bottom: 1px solid rgba(216, 226, 220, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  background:
    linear-gradient(135deg, var(--mint) 0 45%, transparent 45%),
    linear-gradient(315deg, var(--coral) 0 42%, var(--amber) 42%);
  box-shadow: inset 0 0 0 1px rgba(23, 32, 28, 0.15);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  padding: 8px 10px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
  background: var(--wash);
  outline: none;
}

.hero {
  position: relative;
  min-height: clamp(460px, 58svh, 620px);
  display: grid;
  align-items: center;
  overflow: hidden;
  background: #12231d;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 25, 20, 0.94), rgba(12, 25, 20, 0.7) 42%, rgba(12, 25, 20, 0.28)),
    linear-gradient(180deg, rgba(12, 25, 20, 0.12), rgba(12, 25, 20, 0.72)),
    url("figures/motivation.webp") top center / cover no-repeat;
  transform: scale(1.02);
}

.hero-inner {
  position: relative;
  width: 100%;
  max-width: var(--content);
  padding: clamp(44px, 6vh, 68px) var(--page-x) clamp(42px, 6vh, 60px);
  color: #fff;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 780px;
  font-size: 3.35rem;
  line-height: 1.08;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.authors {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--mint);
  color: rgba(255, 255, 255, 0.78);
  font-weight: 650;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.44);
  border-radius: 8px;
  padding: 10px 16px;
  color: #fff;
  font-weight: 800;
}

.action:hover,
.action:focus-visible {
  background: rgba(255, 255, 255, 0.14);
  outline: none;
}

.action.primary {
  border-color: #fff;
  background: #fff;
  color: #12231d;
}

.action.primary:hover,
.action.primary:focus-visible {
  background: #eaf5ef;
}

.action.muted {
  border-color: rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.58);
}

.section {
  padding: var(--section-y) var(--page-x);
}

.hero + .section {
  padding-top: var(--section-y-tight);
}

.section.band {
  background: #fbfefd;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-kicker {
  max-width: var(--content);
  margin: 0 auto 14px;
}

.section-heading {
  max-width: var(--content);
  margin: 0 auto var(--block-gap);
}

.section-heading.two-column {
  max-width: var(--content);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.68fr);
  gap: 48px;
  align-items: start;
}

.section-heading h2 {
  margin: 0;
  max-width: 760px;
  font-size: 2.28rem;
  line-height: 1.15;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.section-heading p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.section-heading.two-column p {
  margin-top: 4px;
}

.motivation-grid,
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: var(--content);
  margin: var(--block-gap) auto;
}

.insight-card {
  min-height: 196px;
  padding: 20px;
  border: 1px solid var(--line);
  border-top: 3px solid rgba(36, 165, 122, 0.74);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 1px 0 rgba(18, 35, 29, 0.03);
}

.card-index {
  display: inline-block;
  color: var(--coral);
  font-size: 0.84rem;
  font-weight: 900;
}

.insight-card h3 {
  margin: 14px 0 9px;
  font-size: 1.18rem;
  line-height: 1.25;
}

.insight-card p {
  margin: 0;
  color: var(--muted);
}

.wide-figure {
  width: 100%;
  max-width: var(--content);
  margin: var(--block-gap) auto 0;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.wide-figure.compact {
  max-width: 980px;
}

figure {
  margin: 0;
  max-width: 100%;
  min-width: 0;
}

figcaption {
  padding: 13px 16px 15px;
  color: var(--muted);
  font-size: 0.93rem;
  border-top: 1px solid var(--line);
  background: #fff;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: var(--content);
  margin: var(--block-gap) auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--line);
}

.process-list div {
  min-height: 140px;
  padding: 20px;
  background: #f9fcfa;
}

.process-list b,
.process-list span {
  display: block;
}

.process-list b {
  font-size: 1.03rem;
}

.process-list span {
  margin-top: 12px;
  color: var(--muted);
}

.dataset-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.58fr) minmax(0, 1fr);
  max-width: var(--content);
  gap: 36px;
  align-items: center;
  margin: calc(var(--block-gap) + 4px) auto 0;
}

.dataset-layout h3 {
  margin: 0 0 12px;
  font-size: 1.45rem;
}

.dataset-layout p {
  margin: 0;
  color: var(--muted);
}

.dataset-layout figure {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.fact-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 20px 0 0;
}

.fact-list div {
  min-height: 92px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.fact-list dt {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 750;
}

.fact-list dd {
  margin: 8px 0 0;
  color: var(--teal);
  font-size: 1.32rem;
  font-weight: 850;
}

.table-wrap {
  max-width: var(--content);
  margin: 0 auto;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

caption {
  padding: 18px 20px;
  text-align: left;
  color: var(--ink);
  font-weight: 850;
}

th,
td {
  padding: 14px 20px;
  border-top: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 850;
}

tbody tr:hover {
  background: #f7fbf8;
}

.highlight-row {
  background: #eef8f3;
  color: #0b5d49;
  font-weight: 850;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: var(--content);
  gap: 22px;
  margin: var(--block-gap) auto 0;
}

.result-grid figure {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.citation-section {
  background: #12231d;
  color: #fff;
}

.citation-section .section-heading p {
  color: rgba(255, 255, 255, 0.7);
}

pre {
  max-width: 980px;
  overflow-x: auto;
  margin: 0 auto;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #f1fff8;
  font-size: 0.95rem;
  line-height: 1.55;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px var(--page-x);
  color: var(--muted);
  background: #fff;
  border-top: 1px solid var(--line);
}

.site-footer a {
  color: var(--teal);
  font-weight: 800;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: 520px;
  }

  .hero h1 {
    font-size: 2.65rem;
  }

  .motivation-grid,
  .method-grid,
  .process-list,
  .dataset-layout,
  .section-heading.two-column {
    grid-template-columns: 1fr;
  }

  .fact-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header {
    position: static;
  }

  .site-nav {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px;
  }

  .site-nav a {
    min-width: 0;
    padding: 6px 4px;
    font-size: 0.86rem;
    text-align: left;
  }

  .hero {
    min-height: 500px;
  }

  .hero-inner {
    padding-top: 48px;
    padding-right: 30px;
    padding-bottom: 40px;
    padding-left: 30px;
    width: 100%;
    max-width: 100%;
  }

  .hero h1 {
    font-size: 1.72rem;
    max-width: calc(100vw - 60px);
    overflow-wrap: break-word;
  }

  .section {
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .section-heading h2 {
    font-size: 1.72rem;
    max-width: calc(100vw - 40px);
    overflow-wrap: break-word;
  }

  .section-heading p {
    max-width: calc(100vw - 40px);
  }

  .action {
    width: 100%;
  }

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