:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --surface-muted: #eef4f5;
  --text: #17212b;
  --muted: #5b6874;
  --line: #d8e2e6;
  --line-strong: #b9c8ce;
  --teal: #116c6d;
  --teal-dark: #0c4f52;
  --amber: #b7791f;
  --ink: #111827;
  --shadow: 0 18px 46px rgba(20, 35, 45, 0.09);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Instrument Sans", Arial, sans-serif;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(17, 108, 109, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 108, 109, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
}

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

a {
  color: inherit;
}

.page-shell {
  position: relative;
  overflow: hidden;
}

.shell-width {
  max-width: 1180px;
}

.narrow-width {
  max-width: 920px;
}

.hero-section {
  padding: 56px 24px 36px;
  background:
    linear-gradient(135deg, rgba(238, 244, 245, 0.95) 0%, rgba(247, 249, 251, 0.96) 48%, rgba(247, 242, 232, 0.88) 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  gap: 32px;
  align-items: center;
}

.paper-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 5px 12px;
  border: 1px solid rgba(17, 108, 109, 0.24);
  border-radius: var(--radius);
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: "Source Serif 4", Georgia, serif;
  letter-spacing: 0;
}

h1 {
  margin: 22px 0 0;
  max-width: 820px;
  color: var(--ink);
  font-size: 48px;
  line-height: 1.05;
  font-weight: 700;
}

.hero-subtitle {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.author-list,
.affiliation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.author-list {
  margin-top: 28px;
  font-size: 17px;
  font-weight: 600;
}

.affiliation-list {
  margin-top: 9px;
  color: var(--muted);
  font-size: 15px;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 15px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  font-weight: 700;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.primary-link {
  color: #ffffff;
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}

.secondary-link {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
}

.primary-link:hover,
.secondary-link:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.primary-link:hover {
  color: #ffffff;
  background: var(--teal);
}

.secondary-link:hover {
  color: var(--teal-dark);
  border-color: rgba(17, 108, 109, 0.44);
}

.hero-visual {
  padding: 4px 0;
}

.visual-caption {
  margin-bottom: 12px;
  color: var(--teal-dark);
  font-weight: 700;
}

.teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

figure {
  margin: 0;
}

.teaser-grid figure,
.loss-grid figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.teaser-grid img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

figcaption {
  padding: 9px 10px;
  color: var(--muted);
  font-size: 13px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.metric-item {
  min-height: 104px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
}

.metric-value {
  display: block;
  color: var(--teal-dark);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
}

.metric-label {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-weight: 600;
}

.section-block {
  padding: 58px 24px;
  background: rgba(247, 249, 251, 0.82);
}

.section-muted {
  background: var(--surface-muted);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 18px;
}

.section-heading span {
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: 36px;
  line-height: 1.1;
}

.section-lead {
  max-width: 840px;
  margin: -4px 0 24px 80px;
  color: var(--muted);
  font-size: 17px;
}

.abstract-text {
  margin: 0 0 16px 80px;
  color: #2a3540;
  font-size: 17px;
}

.figure-panel,
.table-panel,
.qual-example,
.bibtex,
.contribution-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 12px 28px rgba(20, 35, 45, 0.06);
}

.figure-panel {
  overflow: hidden;
}

.figure-panel img {
  width: 100%;
  background: #ffffff;
}

.method-panel img {
  padding: 12px;
}

.figure-panel figcaption {
  padding: 13px 16px 16px;
}

.contribution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.contribution-grid article {
  min-height: 210px;
  padding: 20px;
}

.contribution-grid span {
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.contribution-grid h3 {
  margin: 12px 0 8px;
  font-size: 25px;
  line-height: 1.1;
}

.contribution-grid p {
  margin: 0;
  color: var(--muted);
}

.loss-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.loss-grid img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  background: #ffffff;
}

.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 18px;
  align-items: start;
}

.table-panel {
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  color: var(--ink);
  background: #f2f6f7;
  font-weight: 800;
}

td {
  color: #273341;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.highlight-row td {
  background: rgba(17, 108, 109, 0.055);
}

.strong-row td {
  color: var(--teal-dark);
  font-weight: 800;
}

.qual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.qual-example {
  padding: 18px;
}

.qual-example h3 {
  margin: 0 0 8px;
  font-size: 25px;
  line-height: 1.1;
}

.query {
  min-height: 54px;
  margin: 0 0 14px;
  color: var(--muted);
}

.qual-images {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.qual-images img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.answer-pair {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.answer-pair p {
  margin: 0;
  padding: 10px 12px;
  border-left: 3px solid var(--teal);
  background: #f4f8f8;
  color: #273341;
}

.bibtex {
  display: block;
  margin: 0 0 0 80px;
  padding: 18px;
  overflow-x: auto;
  color: #f4f7f8;
  background: #14212a;
  font-size: 14px;
  line-height: 1.55;
}

@media screen and (max-width: 1023px) {
  .hero-grid,
  .result-layout,
  .qual-grid {
    grid-template-columns: 1fr;
  }

  .metric-strip,
  .contribution-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .loss-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  h1 {
    font-size: 42px;
  }
}

@media screen and (max-width: 720px) {
  .hero-section,
  .section-block {
    padding-left: 16px;
    padding-right: 16px;
  }

  h1 {
    font-size: 34px;
  }

  .hero-subtitle,
  .section-lead,
  .abstract-text {
    font-size: 16px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .section-heading h2 {
    font-size: 30px;
  }

  .section-lead,
  .abstract-text,
  .bibtex {
    margin-left: 0;
  }

  .metric-strip,
  .contribution-grid,
  .teaser-grid,
  .loss-grid,
  .qual-images {
    grid-template-columns: 1fr;
  }

  .resource-links a {
    width: 100%;
    justify-content: center;
  }
}