:root {
  --ink: #0b1638;
  --muted: #5b6680;
  --blue: #2f67c7;
  --blue-dark: #1d4fa9;
  --blue-soft: #e8f0fc;
  --orange: #e56a2f;
  --orange-soft: #fcecdf;
  --green: #2f8a64;
  --green-soft: #e7f5ec;
  --paper: #f3f7fd;
  --white: #ffffff;
  --line: #dce5f1;
  --shadow: 0 20px 60px rgba(25, 53, 100, 0.11);
  --radius: 26px;
  --content-width: min(70vw, 1120px);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  color: white;
  background: var(--blue);
}

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

button {
  color: inherit;
  font: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(47, 103, 199, 0.38);
  outline-offset: 3px;
}

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

main {
  overflow: hidden;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 18px;
  left: 50%;
  width: var(--content-width);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 10px 14px;
  transform: translateX(-50%);
  border: 1px solid rgba(205, 218, 236, 0.86);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 34px rgba(20, 47, 91, 0.11);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: inline-block;
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-header nav a {
  color: #4b5874;
  font-size: 15px;
  font-weight: 700;
  transition: color 180ms ease;
}

.site-header nav a:hover {
  color: var(--blue);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  padding: 10px;
  cursor: pointer;
  border: 0;
  border-radius: 11px;
  background: var(--blue-soft);
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  display: block;
  border-radius: 999px;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  color: #fff;
  border-radius: 12px;
  background: var(--ink);
  font-size: 13px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease;
}

.header-cta {
  padding: 14px 16px;
}

.header-cta:hover {
  transform: translateY(-2px);
  background: var(--blue-dark);
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: 178px max(6vw, 40px) 42px;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  z-index: -3;
  inset: 0;
  content: "";
  background:
    linear-gradient(rgba(47, 103, 199, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 103, 199, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 50% 0%, #fff 0, rgba(255,255,255,0.35) 44%, transparent 70%);
  background-size: 38px 38px, 38px 38px, auto;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

.hero-glow {
  position: absolute;
  z-index: -2;
  border-radius: 999px;
  filter: blur(2px);
  opacity: 0.85;
}

.hero-glow-one {
  width: 430px;
  height: 430px;
  top: 220px;
  left: -240px;
  background: radial-gradient(circle, rgba(69, 129, 230, 0.24), transparent 70%);
}

.hero-glow-two {
  width: 470px;
  height: 470px;
  top: 100px;
  right: -250px;
  background: radial-gradient(circle, rgba(229, 106, 47, 0.16), transparent 70%);
}

.hero-copy {
  width: min(1180px, 100%);
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  width: var(--content-width);
  margin: 0 auto;
  font-size: clamp(30px, 3.6vw, 48px);
  font-weight: 720;
  letter-spacing: -0.045em;
  line-height: 1.09;
}

.hero h1 em,
.hero h1 span {
  display: block;
  font-size: 1em;
}

.hero h1 em {
  margin-bottom: 5px;
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.035em;
}

.author-block {
  max-width: 1080px;
  margin: 34px auto 0;
  color: #253452;
}

.author-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  min-height: 28px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.55;
}

.author-row sup,
.affiliations sup {
  margin-left: 2px;
  color: var(--blue);
  font-size: 0.7em;
  font-weight: 900;
}

.affiliations {
  margin-top: 12px;
  color: var(--muted);
}

.affiliations p {
  margin: 4px 0;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.55;
}

.affiliations p span {
  margin: 0 7px;
  color: #adb7c8;
}

.affiliations .author-notes {
  margin-top: 8px;
  color: #72809a;
}

.resource-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: var(--content-width);
  margin: 24px auto 0;
}

.resource-button {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 7px 15px 7px 8px;
  border: 1px solid #cfd8e8;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--navy);
  box-shadow: 0 5px 16px rgba(40, 60, 94, 0.07);
  font-size: 15px;
  font-weight: 750;
  line-height: 1;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.resource-button:hover {
  border-color: #9eb2d2;
  box-shadow: 0 8px 20px rgba(40, 60, 94, 0.12);
  transform: translateY(-2px);
}

.resource-button.is-disabled {
  cursor: default;
  opacity: 0.58;
}

.resource-button.is-disabled:hover {
  border-color: #cfd8e8;
  box-shadow: 0 5px 16px rgba(40, 60, 94, 0.07);
  transform: none;
}

.resource-button.primary {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

.button-icon {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  flex: 0 0 27px;
  border-radius: 7px;
  background: #edf3fc;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.resource-button.primary .button-icon {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.hero-copy > p {
  max-width: 840px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.hero-stats {
  width: var(--content-width);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 46px auto 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,255,255,0.8);
  box-shadow: 0 14px 44px rgba(31, 63, 112, 0.08);
}

.hero-stats > div {
  min-height: 128px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border-right: 1px solid var(--line);
}

.hero-stats > div:last-child {
  border-right: 0;
}

.hero-stats strong {
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.hero-stats small {
  color: var(--blue);
  font-family: inherit;
  font-size: 16px;
}

.hero-stats span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.figure-card {
  width: var(--content-width);
  margin-right: auto;
  margin-left: auto;
}

.figure-media {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow);
}

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

.figure-card figcaption {
  width: 100%;
  max-width: var(--content-width);
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.7;
  text-align: center;
}

.hero-figure {
  width: var(--content-width);
  margin: 0 auto;
}

.teaser-video-frame {
  aspect-ratio: 16 / 9;
  background: #fff;
}

.teaser-video-frame video {
  width: 96%;
  height: 96%;
  display: block;
  border-radius: 16px;
  object-fit: contain;
}

.page-section {
  width: min(1380px, calc(100% - 80px));
  margin: 0 auto;
  padding: 64px 0;
}

.section-heading {
  width: var(--content-width);
  margin: 0 auto 34px;
}

.eyebrow,
.panel-kicker {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.method-section .section-heading > .eyebrow,
.results-section .section-heading > .eyebrow,
.real-section .section-heading > .eyebrow,
.visual-section .section-heading > .eyebrow {
  font-size: 17px;
  letter-spacing: 0.13em;
}

.section-title-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 64px;
  align-items: end;
  margin-top: 12px;
}

.section-title-row h2:only-child {
  grid-column: 1 / -1;
}

.section-title-row h2 {
  max-width: var(--content-width);
  margin: 0;
  font-size: clamp(30px, 3.3vw, 44px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.section-title-row p {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.abstract-section {
  padding-top: 28px;
}

.abstract-title {
  width: var(--content-width);
  margin: 0 auto 20px;
  font-size: 32px;
  font-weight: 750;
  letter-spacing: -0.035em;
}

.abstract-box {
  width: var(--content-width);
  margin: 0 auto;
  padding: 34px 40px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 18px 60px rgba(25, 53, 100, 0.07);
}

.abstract-box p {
  margin: 0 0 16px;
  color: var(--muted);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

.abstract-box p:last-child {
  margin-bottom: 0;
}

.contribution-strip {
  width: var(--content-width);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 22px auto 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--line);
}

.contribution-strip article {
  min-height: 190px;
  padding: 28px;
  background: rgba(255,255,255,0.86);
}

.contribution-strip span,
.method-cards article > span {
  display: inline-block;
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 18px;
  font-style: italic;
}

.contribution-strip h3,
.method-cards h3 {
  margin: 25px 0 8px;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.contribution-strip p,
.method-cards p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.method-section,
.visual-section {
  width: 100%;
  padding-right: max(6vw, 40px);
  padding-left: max(6vw, 40px);
  background: #fff;
}

.method-figure .figure-media {
  padding: 18px;
  border-radius: 25px;
  background: #fbfcff;
}

.method-cards {
  width: var(--content-width);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px auto 0;
}

.method-cards article {
  position: relative;
  min-height: 280px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #f9fbfe;
}

.method-cards article > span {
  position: absolute;
  top: 28px;
  right: 28px;
}

.node {
  width: max-content;
  padding: 9px 12px;
  border-radius: 9px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.blue-node { color: var(--blue); background: var(--blue-soft); }
.green-node { color: var(--green); background: var(--green-soft); }
.orange-node { color: var(--orange); background: var(--orange-soft); }

.method-cards h3 {
  max-width: 260px;
  margin-top: 74px;
  font-size: 20px;
}

.results-shell,
.real-world-shell {
  width: var(--content-width);
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.tab-list {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
  background: #f8faff;
}

.tab-list button,
.subtabs button,
.segmented button {
  cursor: pointer;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.tab-list button {
  padding: 13px 17px;
}

.tab-list button.active,
.subtabs button.active,
.segmented button.active {
  color: #fff;
  background: var(--ink);
}

.result-panel {
  padding: 38px;
}

.panel-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
  margin-bottom: 34px;
}

.panel-intro h3,
.real-summary h3 {
  margin: 10px 0 8px;
  font-size: 26px;
  letter-spacing: -0.04em;
}

.panel-intro p,
.real-summary p {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.big-number {
  min-width: 200px;
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: 16px;
  background: var(--blue-soft);
}

.big-number strong {
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 34px;
}

.big-number span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.split-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
  align-items: start;
}

.rank-chart {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px;
  border-radius: 18px;
  background: #f6f8fc;
}

.rank-row {
  display: grid;
  grid-template-columns: 24px 115px 1fr 36px;
  gap: 8px;
  align-items: center;
  min-height: 26px;
  font-size: 12px;
}

.rank-row.accent {
  color: var(--blue);
  font-weight: 900;
}

.rank-index {
  color: #9aa6b9;
  font-family: ui-monospace, monospace;
}

.rank-name {
  overflow: hidden;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rank-track {
  height: 5px;
  display: block;
  overflow: hidden;
  border-radius: 999px;
  background: #dde4ee;
}

.rank-track span {
  height: 100%;
  display: block;
  border-radius: inherit;
  background: #a6b8d6;
}

.rank-row.accent .rank-track span {
  background: linear-gradient(90deg, var(--blue), #6b9be6);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 12px 13px;
  border-bottom: 1px solid #e8edf4;
  font-size: 13px;
  text-align: right;
  white-space: nowrap;
}

th:first-child,
td:first-child {
  text-align: left;
}

thead th {
  color: #70809b;
  background: #f7f9fc;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

tbody th {
  font-weight: 700;
}

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

tbody tr:hover {
  background: #f8faff;
}

tr.highlight {
  color: var(--blue-dark);
  background: #ebf2fd;
  font-weight: 900;
}

.robotwin-chart {
  width: min(100%, 820px);
  margin: 0 auto 28px;
  padding: 24px;
  border-radius: 18px;
  background: #f6f8fc;
}

.chart-legend {
  display: flex;
  justify-content: flex-end;
  gap: 18px;
  margin-bottom: 13px;
}

.chart-legend span,
.method-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
}

.chart-legend span::before,
.method-legend span::before {
  width: 9px;
  height: 9px;
  content: "";
  border-radius: 3px;
  background: var(--blue);
}

.chart-legend .legend-hard::before { background: var(--orange); }

.twin-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 14px;
  align-items: center;
  padding: 7px 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.twin-row.accent {
  color: var(--ink);
  font-weight: 900;
}

.twin-bars {
  display: grid;
  gap: 3px;
}

.twin-bars i {
  position: relative;
  min-width: 2px;
  height: 9px;
  display: block;
  border-radius: 0 5px 5px 0;
  background: #80a6e3;
}

.twin-bars i.hard { background: #eda479; }
.twin-row.accent .twin-bars i.easy { background: var(--blue); }
.twin-row.accent .twin-bars i.hard { background: var(--orange); }

.twin-bars b {
  position: absolute;
  left: calc(100% + 7px);
  top: -2px;
  font-size: 12px;
  font-style: normal;
}

.compact-table {
  max-width: 600px;
  margin-right: auto;
  margin-left: auto;
}

.demo-video-shell {
  width: var(--content-width);
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.demo-task-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.demo-task-tabs button {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  border: 0;
  background: #f8faff;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  text-align: left;
  transition: color 180ms ease, background 180ms ease;
}

.demo-task-tabs button span {
  color: #9aa6b9;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}

.demo-task-tabs button.active {
  color: #fff;
  background: var(--ink);
}

.demo-task-tabs button.active span {
  color: #8fb5f4;
}

.demo-video-stage {
  padding: 20px;
  background: #101a33;
}

.demo-video-stage video {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  border-radius: 14px;
  background: #050814;
  object-fit: contain;
}

.demo-video-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 18px;
}

.demo-variant-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-variant-tabs button {
  padding: 9px 12px;
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #f7f9fc;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.demo-variant-tabs button.active {
  border-color: var(--blue);
  background: var(--blue-soft);
  color: var(--blue-dark);
}

.demo-video-toolbar > a {
  flex: 0 0 auto;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.subtabs {
  display: flex;
  gap: 7px;
  margin-bottom: 16px;
}

.subtabs button {
  padding: 10px 13px;
  background: #edf1f7;
}

.ablation-callout {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: 18px;
  padding: 18px 20px;
  border-left: 3px solid var(--orange);
  border-radius: 0 12px 12px 0;
  background: var(--orange-soft);
}

.ablation-callout span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.ablation-callout p {
  margin: 0;
  color: #6b5142;
  font-size: 15px;
  line-height: 1.5;
}

.rubric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.rubric-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #f9fbfe;
}

.rubric-top span {
  display: inline-block;
  padding: 7px 9px;
  border-radius: 8px;
  color: var(--blue);
  background: var(--blue-soft);
  font-size: 12px;
  font-weight: 900;
}

.rubric-card.orange .rubric-top span { color: var(--orange); background: var(--orange-soft); }
.rubric-card.green .rubric-top span { color: var(--green); background: var(--green-soft); }

.rubric-card h4 {
  margin: 18px 0 24px;
  font-size: 19px;
}

.rubric-card ol {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rubric-card li {
  position: relative;
  display: grid;
  grid-template-columns: 27px 1fr;
  gap: 11px;
  min-height: 56px;
}

.rubric-card li:not(:last-child)::before {
  position: absolute;
  top: 25px;
  bottom: 0;
  left: 13px;
  width: 1px;
  content: "";
  background: #cdd8e7;
}

.rubric-card li span {
  width: 27px;
  height: 27px;
  display: grid;
  z-index: 1;
  place-items: center;
  color: #fff;
  border-radius: 50%;
  background: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.rubric-card.orange li span { background: var(--orange); }
.rubric-card.green li span { background: var(--green); }

.rubric-card li p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.real-section {
  width: 100%;
  padding-right: max(6vw, 40px);
  padding-left: max(6vw, 40px);
  background: linear-gradient(180deg, #eef4fc, #f7f9fd);
}

.real-controls {
  display: flex;
  align-items: center;
  gap: 38px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  background: #f8faff;
}

.real-controls > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.real-controls > div > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.segmented {
  display: flex;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
}

.segmented button {
  padding: 9px 12px;
}

.real-content {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 28px;
  padding: 30px;
}

.vertical-chart {
  padding: 22px;
  border-radius: 18px;
  background: #f5f7fb;
}

.chart-topline {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chart-area {
  height: 320px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-top: 28px;
  padding-top: 24px;
  border-bottom: 1px solid #bfcadb;
  background: repeating-linear-gradient(to bottom, transparent 0, transparent 62px, rgba(167,180,201,0.22) 63px);
}

.bar-cluster {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  text-align: center;
}

.bars {
  height: 230px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
}

.bar-slot {
  width: 22%;
  height: 100%;
  display: flex;
  align-items: flex-end;
}

.bar {
  position: relative;
  width: 100%;
  height: var(--bar-height);
  display: block;
  border-radius: 7px 7px 2px 2px;
  background: #9dbbe1;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.55);
  transition: height 420ms cubic-bezier(.2,.8,.2,1);
}

.bar.method-1 { background: #a8d0b6; }
.bar.method-2 { background: linear-gradient(180deg, #f2b079, var(--orange)); }

.bar b {
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  color: #52617c;
  font-size: 12px;
  transform: translateX(-50%);
}

.bar-cluster > strong {
  min-height: 34px;
  margin-top: 11px;
  font-size: 13px;
  line-height: 1.35;
}

.bar-cluster > small {
  color: #8b97aa;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.method-legend {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 22px;
}

.method-legend .method-0::before { background: #9dbbe1; }
.method-legend .method-1::before { background: #a8d0b6; }
.method-legend .method-2::before { background: var(--orange); }

.real-summary {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.real-summary h3 {
  font-size: 24px;
}

.summary-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 26px 0;
}

.summary-list > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  border-radius: 10px;
  background: #f5f7fb;
  font-size: 14px;
  font-weight: 700;
}

.summary-list > div.winner {
  color: #9b4825;
  background: var(--orange-soft);
}

.summary-list strong {
  font-size: 16px;
}

.paper-chart {
  width: min(70vw, 760px);
  max-width: 760px;
  margin: 34px auto 0;
}

.paper-chart .figure-media {
  max-height: 760px;
  padding: 18px;
}

.paper-chart img {
  width: auto;
  max-height: 720px;
  object-fit: contain;
}

.visual-grid {
  display: grid;
  gap: 24px;
}

.visual-grid .figure-media {
  padding: 10px;
  background: #f8faff;
}

.citation-section {
  width: var(--content-width);
  margin: 54px auto;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow);
}

.citation-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.citation-heading h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.035em;
}

.citation-section pre {
  margin: 0;
  padding: 24px;
  overflow-x: auto;
  border: 1px solid #25365b;
  border-radius: 15px;
  background: #0c1730;
  color: #e8efff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  line-height: 1.7;
}

footer {
  min-height: 150px;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  align-items: center;
  gap: 40px;
  padding: 38px max(6vw, 40px);
  border-top: 1px solid var(--line);
  background: #fff;
}

footer p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

@media (max-width: 1100px) {
  .site-header nav { display: none; }
  .split-results { grid-template-columns: 1fr; }
  .rank-chart { order: 2; }
  .real-content { grid-template-columns: 1fr; }
  .real-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
  .real-summary .summary-list { grid-column: 2; grid-row: 1 / span 3; margin: 0; }
  .rubric-grid { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  :root { --content-width: calc(100vw - 32px); }
  html { scroll-padding-top: 82px; }
  .site-header { width: calc(100% - 24px); height: 62px; top: 10px; padding: 8px 9px 8px 13px; }
  .brand-mark { font-size: 30px; }
  .menu-toggle { display: grid; gap: 4px; }
  .site-header nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    display: grid;
    gap: 3px;
    padding: 8px;
    visibility: hidden;
    opacity: 0;
    border: 1px solid var(--line);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 16px 36px rgba(20, 47, 91, 0.14);
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }
  .site-header.menu-open nav { visibility: visible; opacity: 1; transform: translateY(0); }
  .site-header nav a { padding: 11px 12px; border-radius: 9px; }
  .site-header nav a:hover { background: var(--blue-soft); }
  .site-header.menu-open .menu-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-header.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
  .site-header.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .header-cta { display: none; }
  .hero { min-height: auto; padding: 118px 16px 56px; }
  .hero h1 { font-size: clamp(27px, 6vw, 38px); }
  .author-row { gap: 5px 14px; font-size: 13px; }
  .affiliations p { font-size: 13px; }
  .figure-card,
  .hero-figure,
  .paper-chart { width: var(--content-width); }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stats > div:nth-child(2) { border-right: 0; }
  .hero-stats > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .page-section,
  .citation-section { width: var(--content-width); }
  .method-section,
  .real-section,
  .visual-section { width: 100%; padding-right: 16px; padding-left: 16px; }
  .section-title-row { grid-template-columns: 1fr; }
  .section-title-row { gap: 22px; }
  .section-title-row h2 { line-height: 1.08; }
  .abstract-box { padding: 28px; }
  .contribution-strip,
  .method-cards { grid-template-columns: 1fr; }
  .contribution-strip { gap: 1px; }
  .tab-list { overflow-x: auto; }
  .tab-list button { flex: 0 0 auto; }
  .result-panel { padding: 24px 16px; }
  .panel-intro { align-items: flex-start; flex-direction: column; gap: 20px; }
  .big-number { width: 100%; }
  .real-controls { align-items: flex-start; flex-direction: column; gap: 15px; }
  .chart-area { height: 290px; gap: 8px; }
  .bars { gap: 4px; }
  .real-summary { display: block; }
  .real-summary .summary-list { margin: 20px 0; }
  .citation-section { margin: 40px auto; padding: 28px; }
  .demo-task-tabs { grid-template-columns: 1fr; }
  .demo-task-tabs button { min-height: 54px; }
  .demo-video-toolbar { align-items: flex-start; flex-direction: column; }
  footer { grid-template-columns: 1fr; padding-right: 16px; padding-left: 16px; }
}

@media (max-width: 520px) {
  :root { --content-width: calc(100vw - 24px); }
  .hero h1 { font-size: clamp(24px, 6.5vw, 31px); }
  .author-block { margin-top: 26px; }
  .author-row { display: block; font-size: 13px; line-height: 1.65; }
  .author-row span { display: inline-block; margin: 0 5px; }
  .affiliations p span { margin: 0 3px; }
  .resource-actions { gap: 8px; }
  .resource-button { min-height: 40px; padding-right: 11px; font-size: 13px; }
  .button-icon { width: 25px; height: 25px; flex-basis: 25px; }
  .hero-copy > p { font-size: 15px; }
  .hero-stats > div { min-height: 108px; padding: 14px 8px; }
  .hero-stats strong { font-size: 28px; }
  .hero-stats span { font-size: 10px; letter-spacing: 0.05em; text-align: center; }
  .page-section { padding-top: 52px; padding-bottom: 52px; }
  .section-title-row h2 { font-size: clamp(27px, 8vw, 32px); }
  .abstract-title { font-size: 28px; }
  .abstract-box { padding: 22px 18px; }
  .abstract-box p { font-size: 15px; line-height: 1.7; }
  .contribution-strip article { min-height: 0; padding: 22px; }
  .contribution-strip h3 { margin-top: 16px; }
  .method-figure .figure-media { padding: 6px; border-radius: 16px; }
  .method-cards article { min-height: 0; padding: 24px; }
  .method-cards h3 { margin-top: 54px; }
  .figure-card figcaption { padding: 0 8px; }
  .subtabs { overflow-x: auto; }
  .subtabs button { flex: 0 0 auto; }
  .ablation-callout { grid-template-columns: 1fr; gap: 7px; }
  .real-controls > div { width: 100%; align-items: flex-start; flex-direction: column; }
  .segmented { width: 100%; }
  .segmented button { flex: 1; }
  .real-content { padding: 16px; }
  .vertical-chart { padding: 14px 6px; }
  .chart-topline { font-size: 10px; letter-spacing: 0.04em; }
  .chart-area { height: 260px; }
  .bars { height: 190px; }
  .bar-slot { width: 27%; }
  .bar b { font-size: 10px; }
  .bar-cluster > strong { font-size: 12px; }
  .bar-cluster > small { display: none; }
  .method-legend { gap: 12px; }
  .method-legend span { font-size: 11px; }
  .citation-heading { align-items: flex-start; flex-direction: column; gap: 8px; }
  .citation-heading h2 { font-size: 26px; }
  .citation-section pre { padding: 18px; font-size: 13px; }
  .demo-video-stage { padding: 10px; }
  .demo-video-toolbar { padding: 14px 12px; }
  .demo-variant-tabs { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
  .demo-variant-tabs button { min-height: 42px; }
  .citation-section { padding: 22px 16px; }
  .citation-section pre { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}