:root {
  color-scheme: light;
  --bg: #fbfaf8;
  --surface-soft: #f5f1f3;
  --text: #29252a;
  --muted: #6f6670;
  --line: #ddd5da;
  --plum: #9b3b72;
  --teal: #0d7471;
  --teal-dark: #075855;
  --amber: #b36b22;
  --shadow: 0 22px 60px rgba(72, 48, 64, 0.12);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(155, 59, 114, 0.08), transparent 36%),
    linear-gradient(180deg, rgba(13, 116, 113, 0.06), transparent 26%),
    var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 32px;
  border-bottom: 1px solid rgba(221, 213, 218, 0.8);
  background: rgba(251, 250, 248, 0.92);
  backdrop-filter: blur(18px);
}

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

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(13, 116, 113, 0.28);
  border-radius: 50%;
  background: #ffffff;
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.brand-text {
  font-size: 15px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--plum);
  opacity: 0;
  transform: translateY(4px);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.header-action,
.primary-link,
.secondary-link,
.report-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 750;
}

.header-action {
  min-width: 96px;
  border: 1px solid rgba(13, 116, 113, 0.24);
  background: #ffffff;
  color: var(--teal);
}

svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

main {
  overflow: hidden;
}

.hero-section,
.section-block,
.metric-strip,
.site-footer {
  width: min(var(--max), calc(100% - 40px));
  margin-right: auto;
  margin-left: auto;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1fr);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: 70px 0 42px;
  gap: 56px;
}

.hero-copy h1 {
  max-width: 650px;
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 58px;
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 650px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-link {
  min-width: 150px;
  padding: 0 18px;
  background: var(--teal);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(13, 116, 113, 0.22);
}

.secondary-link {
  min-width: 126px;
  padding: 0 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
}

.hero-media {
  position: relative;
}

.hero-media::before {
  position: absolute;
  inset: -30px 62% -20px -54px;
  z-index: 1;
  content: "";
  background: linear-gradient(90deg, rgba(251, 250, 248, 0.96), rgba(251, 250, 248, 0));
  pointer-events: none;
}

.mosaic {
  position: relative;
  z-index: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(72px, 1fr));
  grid-auto-rows: minmax(72px, 1fr);
  gap: 6px;
  transform: rotate(-1deg);
}

.mosaic img {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 6px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(76, 42, 62, 0.12);
}

.media-caption {
  position: relative;
  z-index: 2;
  max-width: 360px;
  margin-top: 16px;
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: -28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.metric-strip article {
  padding: 26px 28px;
  border-right: 1px solid var(--line);
}

.metric-strip article:last-child {
  border-right: 0;
}

.metric-strip span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
  text-transform: uppercase;
}

.metric-strip strong {
  display: block;
  margin-top: 8px;
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 34px;
  line-height: 1.1;
}

.metric-strip p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.section-block {
  padding: 86px 0 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 26px;
}

.section-heading h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: 0;
}

.section-heading p,
.panel-title p {
  max-width: 660px;
  margin: 10px 0 0;
  color: var(--muted);
}

.model-layout,
.comparison-grid,
.result-layout,
.class-layout,
.method-grid {
  display: grid;
  gap: 18px;
}

.model-layout {
  grid-template-columns: 320px minmax(0, 1fr);
}

.model-selector,
.class-list {
  display: grid;
  align-content: start;
  gap: 10px;
}

.model-button,
.class-button,
.tab-button,
.pill-button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.model-button {
  min-height: 92px;
  padding: 18px;
}

.model-button:hover,
.class-button:hover,
.tab-button:hover,
.pill-button:hover,
.model-button:focus-visible,
.class-button:focus-visible,
.tab-button:focus-visible,
.pill-button:focus-visible {
  border-color: rgba(13, 116, 113, 0.55);
  transform: translateY(-1px);
  outline: none;
}

.model-button.is-active,
.class-button.is-active,
.tab-button.is-active,
.pill-button.is-active {
  border-color: rgba(13, 116, 113, 0.58);
  background: #ffffff;
  color: var(--teal-dark);
  box-shadow: 0 12px 30px rgba(13, 116, 113, 0.1);
}

.model-button strong {
  display: block;
  font-size: 18px;
}

.model-button span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.model-detail,
.chart-panel,
.result-stage,
.finding-panel,
.class-detail,
.method-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 16px 40px rgba(72, 48, 64, 0.08);
}

.model-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  min-height: 286px;
  overflow: hidden;
}

.model-narrative {
  padding: 28px;
}

.model-narrative h3,
.panel-title h3,
.method-panel h3,
.class-detail h3,
.finding-panel h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.model-narrative p,
.method-panel p,
.finding-panel p,
.class-detail p {
  margin: 12px 0 0;
  color: var(--muted);
}

.model-stats {
  display: grid;
  gap: 10px;
  padding: 24px;
  border-left: 1px solid var(--line);
  background: var(--surface-soft);
}

.stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(221, 213, 218, 0.9);
}

.stat-row:last-child {
  border-bottom: 0;
}

.stat-row span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.stat-row strong {
  color: var(--teal-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 20px;
}

.parameter-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.parameter-list div {
  min-height: 64px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.parameter-list span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.parameter-list strong {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-size: 14px;
}

.comparison-grid {
  grid-template-columns: 1.15fr 0.85fr;
  margin-top: 18px;
}

.chart-panel {
  padding: 24px;
}

.bar-chart {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.bar-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 78px;
  align-items: center;
  gap: 14px;
}

.bar-row span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.bar-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: #ebe4e8;
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--plum));
}

.bar-value {
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  text-align: right;
}

.result-band {
  width: 100%;
  max-width: none;
  padding: 86px max(20px, calc((100vw - var(--max)) / 2)) 0;
}

.result-band::before {
  display: block;
  height: 1px;
  margin-bottom: 84px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.segmented-control,
.model-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-button,
.pill-button {
  min-height: 40px;
  padding: 0 14px;
  text-align: center;
  font-size: 14px;
  font-weight: 750;
}

.result-layout {
  grid-template-columns: minmax(0, 1fr) 320px;
}

.result-stage {
  padding: 22px;
}

.figure-frame {
  margin: 18px 0 0;
}

.figure-frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 620px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  object-fit: contain;
}

.figure-frame figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}

.finding-panel {
  align-self: stretch;
  padding: 24px;
}

.finding-panel ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.finding-panel li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
}

.finding-panel li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  content: "";
  background: var(--amber);
}

.class-layout {
  grid-template-columns: 260px minmax(0, 1fr);
}

.class-list {
  max-height: 680px;
  overflow: auto;
  padding-right: 6px;
}

.class-button {
  min-height: 58px;
  padding: 12px 14px;
}

.class-button strong {
  display: block;
  font-size: 14px;
}

.class-button span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.class-detail {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1fr);
  gap: 24px;
  padding: 24px;
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(70px, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.sample-grid img {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid rgba(221, 213, 218, 0.9);
  border-radius: 6px;
  object-fit: cover;
  image-rendering: pixelated;
}

.class-metrics {
  display: grid;
  gap: 14px;
}

.class-counts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.class-counts div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.class-counts span,
.f1-row span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.class-counts strong {
  display: block;
  margin-top: 4px;
  color: var(--teal-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 22px;
}

.f1-chart {
  display: grid;
  gap: 12px;
  margin-top: 4px;
}

.f1-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 58px;
  align-items: center;
  gap: 12px;
}

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

.method-panel {
  padding: 22px;
}

.method-panel img {
  width: 100%;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.report-links {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.report-links a {
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--teal-dark);
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 54px 0 38px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 54px;
  }

  .hero-copy h1 {
    font-size: 44px;
  }

  .hero-media::before {
    inset: -18px auto -18px -20px;
    width: 40%;
  }

  .metric-strip,
  .model-layout,
  .comparison-grid,
  .result-layout,
  .class-layout,
  .method-grid,
  .model-detail,
  .class-detail {
    grid-template-columns: 1fr;
  }

  .metric-strip {
    margin-top: 0;
  }

  .metric-strip article,
  .model-stats {
    border-right: 0;
    border-left: 0;
  }

  .metric-strip article {
    border-bottom: 1px solid var(--line);
  }

  .metric-strip article:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 64px;
  }

  .header-action {
    min-width: 82px;
  }

  .hero-section,
  .section-block,
  .metric-strip,
  .site-footer {
    width: min(100% - 28px, var(--max));
  }

  .hero-copy h1 {
    font-size: 36px;
  }

  .hero-copy p {
    font-size: 16px;
  }

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

  .metric-strip strong {
    font-size: 28px;
  }

  .section-heading {
    display: block;
  }

  .section-heading h2 {
    font-size: 28px;
  }

  .segmented-control {
    margin-top: 18px;
  }

  .parameter-list,
  .class-counts {
    grid-template-columns: 1fr;
  }

  .bar-row,
  .f1-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .bar-value {
    text-align: left;
  }

  .sample-grid {
    grid-template-columns: repeat(3, minmax(70px, 1fr));
  }

  .site-footer {
    display: grid;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}