:root {
  --bg: #f5efe6;
  --bg-soft: #fbf8f3;
  --bg-deep: #0f1d31;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(255, 255, 255, 0.88);
  --surface-dark: rgba(14, 28, 47, 0.84);
  --ink: #162338;
  --ink-soft: #41526b;
  --ink-faint: #6c7a8f;
  --line: rgba(26, 42, 68, 0.1);
  --line-strong: rgba(26, 42, 68, 0.18);
  --primary: #214f92;
  --primary-strong: #17376b;
  --accent: #bf5c3f;
  --accent-soft: #e6b486;
  --mint: #2d8f84;
  --gold: #f0c67b;
  --white: #ffffff;
  --shadow-lg: 0 36px 100px rgba(20, 33, 54, 0.14);
  --shadow-md: 0 20px 50px rgba(20, 33, 54, 0.12);
  --radius-xl: 34px;
  --radius-lg: 26px;
  --radius-md: 18px;
  --container: min(1200px, calc(100vw - 40px));
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Sora", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 12%, rgba(240, 198, 123, 0.26), transparent 24%),
    radial-gradient(circle at 88% 14%, rgba(33, 79, 146, 0.16), transparent 22%),
    radial-gradient(circle at 78% 88%, rgba(45, 143, 132, 0.1), transparent 24%),
    linear-gradient(180deg, #f7f2ea 0%, #f4ede4 40%, #fbf8f3 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(23, 43, 72, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 43, 72, 0.035) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.42), transparent 82%);
  pointer-events: none;
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 0.5), transparent 34%),
    radial-gradient(circle at 100% 20%, rgba(255, 255, 255, 0.32), transparent 28%);
  pointer-events: none;
  z-index: -3;
}

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

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

a[aria-disabled="true"] {
  pointer-events: none;
}

p {
  margin: 0;
  line-height: 1.74;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.7rem;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

h1,
h2,
h3,
strong {
  text-wrap: balance;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.narrow {
  max-width: 860px;
}

.card {
  border: 1px solid rgba(255, 255, 255, 0.58);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 18px 0 0;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  background: rgba(250, 246, 239, 0.78);
  box-shadow: 0 18px 50px rgba(21, 35, 60, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 0;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.brand strong {
  font-size: 1rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.site-nav a {
  position: relative;
  color: var(--ink-soft);
  font-size: 0.93rem;
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--primary);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  padding: 84px 0 44px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 38px;
  align-items: center;
}

.eyebrow,
.section-kicker,
.benchmark-kicker {
  margin-bottom: 12px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Fraunces", serif;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(3.35rem, 7vw, 6rem);
  max-width: 10ch;
}

.hero-subtitle {
  margin-top: 18px;
  max-width: 42rem;
  font-size: clamp(1.15rem, 2vw, 1.48rem);
  color: rgba(22, 35, 56, 0.9);
}

.author-block {
  margin-top: 24px;
  max-width: 52rem;
}

.author-line {
  font-size: 1rem;
  line-height: 1.86;
}

.author-link {
  display: inline-block;
  border-bottom: 1px solid transparent;
  transition:
    color 180ms ease,
    border-color 180ms ease;
}

.author-link:hover,
.author-link:focus-visible {
  color: var(--primary);
  border-color: rgba(33, 79, 146, 0.28);
}

.author-link-static {
  cursor: default;
}

.affiliation-line,
.author-note {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 10px;
  color: var(--ink-soft);
}

.affiliation-line {
  font-size: 0.95rem;
}

.author-note {
  font-size: 0.9rem;
}

.hero-body {
  margin-top: 22px;
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 0 18px 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(26, 42, 68, 0.12);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 16px 36px rgba(20, 33, 54, 0.08);
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.icon-button:hover,
.icon-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 22px 44px rgba(20, 33, 54, 0.12);
}

.icon-button-code {
  background: linear-gradient(135deg, rgba(26, 42, 68, 0.98), rgba(36, 63, 101, 0.94));
  color: var(--white);
}

.icon-button-paper {
  background: linear-gradient(135deg, rgba(255, 250, 244, 0.96), rgba(247, 237, 225, 0.96));
}

.icon-button.is-disabled {
  cursor: default;
  opacity: 0.88;
}

.icon-button.is-disabled:hover,
.icon-button.is-disabled:focus-visible {
  transform: none;
  box-shadow: 0 16px 36px rgba(20, 33, 54, 0.08);
}

.button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  flex: 0 0 34px;
}

.icon-button-code .button-icon {
  background: rgba(255, 255, 255, 0.12);
}

.icon-button-paper .button-icon {
  background: #b31b1b;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.button-icon svg,
.button-icon img {
  width: 22px;
  height: 22px;
}

.icon-button-code svg {
  fill: currentColor;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-tags span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(33, 79, 146, 0.09);
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.hero-visual {
  position: relative;
  min-height: 470px;
}

.visual-stack {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(245, 239, 230, 0.56)),
    linear-gradient(135deg, rgba(33, 79, 146, 0.08), transparent 55%);
  box-shadow: var(--shadow-lg);
}

.visual-stack::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(240, 198, 123, 0.18), transparent 28%),
    radial-gradient(circle at left center, rgba(33, 79, 146, 0.12), transparent 24%);
  pointer-events: none;
}

.visual-kicker {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  color: var(--ink-faint);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-figure {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.9);
}

.hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.floating-panel {
  position: absolute;
  max-width: 290px;
  padding: 18px 18px 16px;
  border-radius: 22px;
  background: rgba(255, 252, 248, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 24px 60px rgba(19, 33, 55, 0.14);
}

.floating-panel-top {
  top: -22px;
  right: -14px;
}

.floating-panel-bottom {
  left: -10px;
  bottom: 20px;
}

.panel-label {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.floating-panel strong {
  display: block;
  font-size: 1rem;
  line-height: 1.45;
}

.floating-panel p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.62;
}

.thesis-strip {
  padding: 12px 0 42px;
}

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

.thesis-card {
  padding: 26px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(31, 51, 80, 0.08);
  box-shadow: 0 16px 42px rgba(20, 33, 54, 0.08);
}

.thesis-index,
.feature-number,
.note-index,
.signal-tag,
.result-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.thesis-index,
.note-index,
.result-label {
  color: var(--primary);
  background: rgba(33, 79, 146, 0.1);
}

.feature-number {
  width: 34px;
  padding: 0;
  color: var(--accent);
  background: rgba(191, 92, 63, 0.12);
}

.signal-tag {
  color: var(--mint);
  background: rgba(45, 143, 132, 0.1);
}

.thesis-card h2 {
  margin-top: 18px;
  font-size: 1.52rem;
}

.thesis-card p {
  margin-top: 12px;
  color: var(--ink-soft);
}

.section {
  padding: 58px 0;
}

.section-alt {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.12));
  border-block: 1px solid rgba(34, 53, 82, 0.05);
}

.section-dark {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 14% 12%, rgba(240, 198, 123, 0.14), transparent 20%),
    radial-gradient(circle at 86% 18%, rgba(67, 134, 222, 0.18), transparent 22%),
    linear-gradient(180deg, #10203a 0%, #0c182c 100%);
}

.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 92px 92px;
  opacity: 0.6;
  pointer-events: none;
}

.section-heading {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin-bottom: 28px;
}

.section-heading-light .section-kicker,
.section-heading-light .benchmark-kicker {
  color: var(--gold);
}

.section-title {
  font-size: clamp(2.1rem, 4vw, 3.8rem);
}

.section-lead {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

.section-heading-light .section-lead {
  color: rgba(236, 242, 251, 0.78);
}

.intro-grid,
.resource-grid,
.citation-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 24px;
  align-items: start;
}

.signal-cluster {
  display: grid;
  gap: 18px;
}

.signal-panel,
.feature-card,
.note-card,
.highlight-card,
.benchmark-card,
.result-stat,
.code-card {
  border-radius: var(--radius-lg);
}

.signal-panel,
.feature-card,
.note-card,
.highlight-card,
.benchmark-card,
.result-stat {
  padding: 28px;
}

.signal-panel p {
  margin-top: 14px;
  color: var(--ink-soft);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.feature-card h3,
.note-card h3,
.highlight-card h3 {
  margin-top: 18px;
  font-size: 1.58rem;
}

.feature-card p,
.note-card p,
.highlight-card li {
  margin-top: 12px;
  color: var(--ink-soft);
}

.feature-card p {
  margin-top: 14px;
}

.method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(310px, 0.84fr);
  gap: 24px;
  align-items: start;
}

.method-notes,
.results-side {
  display: grid;
  gap: 18px;
}

.figure-card {
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.figure-card a {
  display: block;
}

.figure-card img {
  width: 100%;
  height: auto;
}

.figure-card figcaption {
  padding: 20px 24px 24px;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.68;
}

.rubric-showcase,
.two-up {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.result-highlights {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.result-stat {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.result-stat strong {
  display: block;
  margin-top: 16px;
  font-size: clamp(2.1rem, 5vw, 3rem);
  line-height: 1;
}

.result-stat p {
  margin-top: 10px;
  color: rgba(236, 242, 251, 0.76);
}

.results-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(290px, 0.92fr);
  gap: 24px;
  align-items: start;
}

.section-dark .card {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.section-dark .figure-card figcaption,
.section-dark .highlight-card li,
.section-dark .benchmark-note {
  color: rgba(236, 242, 251, 0.74);
}

.highlight-card ul {
  margin-top: 16px;
}

.benchmark-panels {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
  margin-top: 26px;
}

.benchmark-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 18px;
}

.benchmark-head h3 {
  font-size: 1.52rem;
}

.benchmark-note {
  max-width: 360px;
  text-align: right;
  font-size: 0.95rem;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.96);
}

.benchmark-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  color: var(--ink);
}

.benchmark-table-wide {
  min-width: 1100px;
}

.benchmark-table th,
.benchmark-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(33, 53, 84, 0.08);
  text-align: left;
  vertical-align: top;
  font-size: 0.92rem;
}

.benchmark-table th {
  background: rgba(33, 79, 146, 0.08);
  font-weight: 700;
  white-space: nowrap;
}

.benchmark-table td:first-child,
.benchmark-table th:first-child {
  position: sticky;
  left: 0;
  background: rgba(251, 248, 242, 0.98);
  z-index: 1;
}

.benchmark-table th:first-child {
  z-index: 2;
}

.group-row td {
  background: rgba(33, 79, 146, 0.06) !important;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
}

.arr-row td {
  background: rgba(45, 143, 132, 0.1);
}

.best-row td {
  font-weight: 700;
}

.gain {
  color: var(--primary);
  font-weight: 700;
  white-space: nowrap;
}

.qualitative-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

.example-top {
  grid-column: 1 / -1;
  width: min(100%, 720px);
  justify-self: center;
}

.resource-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.resource-list a {
  display: grid;
  gap: 4px;
  padding: 18px 18px 16px;
  border-radius: 20px;
  border: 1px solid rgba(33, 79, 146, 0.08);
  background: rgba(255, 255, 255, 0.72);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.resource-list a:hover,
.resource-list a:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(33, 79, 146, 0.18);
  box-shadow: 0 20px 40px rgba(20, 33, 54, 0.08);
}

.resource-list strong {
  font-size: 1rem;
}

.resource-list span {
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.code-card {
  overflow: hidden;
}

.code-card-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(236, 242, 251, 0.78);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-alt .code-card-head,
.citation-section .code-card-head {
  background: rgba(18, 30, 49, 0.96);
}

.code-card pre {
  margin: 0;
  padding: 24px;
  overflow: auto;
  background:
    linear-gradient(180deg, rgba(18, 30, 49, 0.98), rgba(13, 24, 41, 0.98)),
    linear-gradient(135deg, rgba(240, 198, 123, 0.08), transparent 34%);
  color: #edf3fb;
  line-height: 1.72;
  font-size: 0.94rem;
}

.citation-section {
  padding-top: 42px;
}

.site-footer {
  padding: 28px 0 38px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(29, 44, 68, 0.1);
}

.footer-title {
  font-weight: 700;
}

.footer-copy {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

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

@media (max-width: 1180px) {
  .hero-grid,
  .method-grid,
  .results-grid,
  .intro-grid,
  .resource-grid,
  .citation-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
  }

  .floating-panel-top {
    right: 16px;
    top: 16px;
  }

  .floating-panel-bottom {
    left: 16px;
    bottom: 16px;
  }

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

@media (max-width: 920px) {
  .header-row,
  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .thesis-grid,
  .result-highlights,
  .qualitative-grid,
  .rubric-showcase,
  .two-up {
    grid-template-columns: 1fr;
  }

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

  .benchmark-head,
  .code-card-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .benchmark-note {
    max-width: none;
    text-align: left;
  }

  .example-top {
    width: 100%;
  }
}

@media (max-width: 640px) {
  :root {
    --container: min(100vw - 24px, 1200px);
    --radius-xl: 28px;
    --radius-lg: 22px;
  }

  .site-header {
    padding-top: 12px;
  }

  .header-row {
    border-radius: 28px;
  }

  .hero {
    padding-top: 58px;
  }

  h1 {
    max-width: none;
    font-size: clamp(2.7rem, 14vw, 4rem);
  }

  .hero-actions {
    flex-direction: column;
  }

  .icon-button {
    width: 100%;
    justify-content: flex-start;
  }

  .floating-panel {
    position: static;
    max-width: none;
    margin-top: 16px;
  }

  .section {
    padding: 44px 0;
  }

  .signal-panel,
  .feature-card,
  .note-card,
  .highlight-card,
  .benchmark-card,
  .result-stat {
    padding: 22px;
  }

  .code-card pre {
    padding: 20px;
  }
}