:root {
  --bg: #f5f1ea;
  --paper: #fffdf8;
  --paper-strong: #ffffff;
  --ink: #13212d;
  --muted: #596977;
  --accent: #163249;
  --accent-soft: #315674;
  --line: rgba(19, 33, 45, 0.12);
  --line-strong: rgba(19, 33, 45, 0.2);
  --shadow: 0 22px 60px rgba(22, 50, 73, 0.09);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --content-width: 1180px;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif;
  --sans: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", "Menlo", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(circle at top left, rgba(49, 86, 116, 0.08), transparent 28rem),
    radial-gradient(circle at top right, rgba(22, 50, 73, 0.06), transparent 24rem),
    linear-gradient(180deg, #f7f3ec 0%, #f4efe6 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 48px,
      rgba(19, 33, 45, 0.02) 48px,
      rgba(19, 33, 45, 0.02) 49px
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 48px,
      rgba(19, 33, 45, 0.02) 48px,
      rgba(19, 33, 45, 0.02) 49px
    );
  opacity: 0.6;
}

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

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

h1,
h2,
h3,
p,
ul,
figure,
pre {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

.site-shell {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  padding: 20px 0 72px;
  position: relative;
  z-index: 1;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.84);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 30px rgba(22, 50, 73, 0.08);
}

.brand {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 24px;
  padding-top: 34px;
}

.masthead-copy,
.masthead-panel,
.text-panel,
.insight-card,
.metric-card,
.resource-card,
.figure-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 248, 0.9);
  box-shadow: var(--shadow);
}

.masthead-copy {
  padding: 44px;
}

.kicker,
.panel-label,
figcaption,
.copy-button {
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kicker,
.panel-label {
  color: var(--accent);
  font-size: 0.76rem;
}

.masthead h1,
.section-heading h2,
.insight-card h3 {
  font-family: var(--serif);
  letter-spacing: -0.04em;
}

.masthead h1 {
  margin-top: 14px;
  font-size: clamp(3.2rem, 6vw, 5.6rem);
  line-height: 0.92;
}

.masthead h1 span {
  display: block;
  margin-top: 12px;
  color: var(--accent-soft);
  font-size: clamp(1.5rem, 2.6vw, 2.5rem);
  line-height: 1.05;
}

.authors {
  margin-top: 22px;
  font-size: 1.06rem;
  line-height: 1.75;
}

.author-note,
.lede,
.text-panel p,
.insight-card p:last-child,
.metric-list span,
.site-footer p,
.nav-links a,
figcaption {
  color: var(--muted);
}

.author-note {
  margin-top: 6px;
  font-size: 0.95rem;
}

.lede {
  margin-top: 22px;
  max-width: 40rem;
  font-size: 1.08rem;
  line-height: 1.8;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button,
.resource-links a,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-weight: 600;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

.button:hover,
.resource-links a:hover,
.copy-button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #f7f4ee;
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, #234c6a 100%);
}

.button-secondary,
.resource-links a,
.copy-button {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
}

.masthead-panel {
  padding: 28px;
}

.summary-list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.summary-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.summary-list li:first-child {
  border-top: 0;
  padding-top: 4px;
}

.summary-list strong,
.metric-list strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.6rem;
  letter-spacing: -0.03em;
}

.summary-list span,
.metric-list span {
  display: block;
  margin-top: 6px;
  line-height: 1.6;
}

.section {
  margin-top: 88px;
  scroll-margin-top: 112px;
}

.section-heading {
  max-width: 52rem;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin-top: 10px;
  font-size: clamp(2.1rem, 4vw, 3.7rem);
  line-height: 0.98;
}

.figure-panel {
  overflow: hidden;
}

.figure-frame {
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(250, 247, 242, 0.9), rgba(255, 255, 255, 0.95));
}

.figure-frame img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

figcaption {
  padding: 0 18px 18px;
  font-size: 0.74rem;
  line-height: 1.6;
}

.abstract-grid,
.method-layout,
.results-layout,
.analysis-layout,
.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.text-panel {
  padding: 28px;
}

.text-panel p {
  font-size: 1.04rem;
  line-height: 1.9;
}

.insight-grid,
.stack-column {
  display: grid;
  gap: 18px;
}

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

.insight-card,
.metric-card,
.resource-card {
  padding: 24px;
}

.insight-card h3 {
  margin-top: 12px;
  font-size: 1.8rem;
  line-height: 1.04;
}

.insight-card p:last-child {
  margin-top: 12px;
  line-height: 1.7;
}

.metric-list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.metric-list li {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.metric-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.wide-panel {
  margin-top: 22px;
}

.pipeline-panel .figure-frame {
  padding: 10px;
}

.method-support,
.tables-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 22px;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.fact-grid li {
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}

.fact-grid strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.7rem;
  letter-spacing: -0.03em;
}

.fact-grid span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.5;
}

.section-subhead {
  margin-top: 28px;
  margin-bottom: 18px;
}

.section-subhead h3 {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  letter-spacing: -0.03em;
}

.table-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 248, 0.9);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.leader-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.leader-card {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(241, 246, 250, 0.72));
  box-shadow: var(--shadow);
}

.leader-card strong {
  display: block;
  margin-top: 10px;
  font-family: var(--serif);
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.leader-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.5;
}

.table-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 22px 14px;
}

.table-header p:last-child {
  color: var(--muted);
  font-size: 0.94rem;
  text-align: right;
}

.table-scroll {
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.data-table {
  width: 100%;
  min-width: 720px;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
  vertical-align: middle;
}

.data-table th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(22, 50, 73, 0.04);
}

.data-table th:first-child,
.data-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  background: rgba(255, 253, 248, 0.98);
}

.data-table th:first-child {
  z-index: 3;
  background: rgba(240, 245, 249, 0.98);
}

.data-table td {
  font-size: 0.95rem;
}

.data-table tbody tr:hover td {
  background: rgba(244, 248, 251, 0.96);
}

.group-row td {
  position: static;
  z-index: auto;
  padding: 12px 16px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(22, 50, 73, 0.07);
}

.row-featured td {
  background: rgba(227, 238, 247, 0.62);
}

.row-featured td:first-child {
  background: rgba(227, 238, 247, 0.95);
}

.model-cell {
  min-width: 200px;
}

.model-name {
  display: block;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.model-rank {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.82rem;
}

.type-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.82rem;
  font-weight: 700;
}

.type-pill.open {
  color: #18435d;
  background: rgba(49, 114, 156, 0.12);
}

.type-pill.proprietary {
  color: #7a4b12;
  background: rgba(211, 156, 57, 0.14);
}

.type-pill.moe {
  color: #6b2f78;
  background: rgba(160, 102, 178, 0.12);
}

.metric-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 78px;
  padding: 7px 11px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(19, 33, 45, 0.08);
  background: rgba(255, 255, 255, 0.78);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.metric-pill::before {
  content: "";
  position: absolute;
  inset: 0;
  width: calc(var(--score) * 1%);
  opacity: 0.24;
}

.metric-pill.family::before {
  background: linear-gradient(90deg, #d5aa29, #f0c861);
}

.metric-pill.size::before {
  background: linear-gradient(90deg, #d86f24, #f6a24a);
}

.metric-pill.style::before {
  background: linear-gradient(90deg, #c74b47, #ef7b72);
}

.metric-pill.color::before {
  background: linear-gradient(90deg, #26995c, #4fd089);
}

.metric-pill.overall::before {
  background: linear-gradient(90deg, #2b5d7f, #72a5c7);
}

.metric-pill.frb::before,
.metric-pill.easy::before {
  background: linear-gradient(90deg, #587cb7, #8fb0e6);
}

.metric-pill.hard::before {
  background: linear-gradient(90deg, #8e5db7, #bf95e4);
}

.metric-pill,
.type-pill,
.leader-card strong {
  position: relative;
  z-index: 1;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.citation-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.copy-button {
  cursor: pointer;
  font-size: 0.72rem;
}

.resource-card pre {
  margin-top: 16px;
  overflow-x: auto;
  padding: 18px;
  border-radius: var(--radius-sm);
  background: #11202c;
  color: #f7f4ee;
}

.resource-card code {
  font-family: var(--mono);
  font-size: 0.88rem;
  line-height: 1.7;
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-top: 70px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.site-footer a {
  color: var(--accent);
}

[data-reveal] {
  opacity: 1;
  transform: none;
}

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

  [data-reveal] {
    transition: none;
  }

  .button,
  .resource-links a,
  .copy-button {
    transition: none;
  }
}

@media (max-width: 1080px) {
  .masthead,
  .abstract-grid,
  .results-layout,
  .analysis-layout,
  .resource-grid,
  .method-support,
  .tables-layout,
  .leader-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--content-width));
    padding-top: 14px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 24px;
    padding: 14px 16px;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: 10px 14px;
  }

  .masthead-copy,
  .masthead-panel,
  .text-panel,
  .insight-card,
  .metric-card,
  .resource-card {
    padding: 22px;
  }

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

  .section {
    margin-top: 72px;
  }

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