:root {
  --page: #ffffff;
  --soft: #f7f8fa;
  --soft-alt: #fafafa;
  --blue-tint: #eaf1ff;
  --ink: #1a1a1a;
  --ink-2: #555555;
  --quiet: #7a7a7a;
  --line: #e6e8ee;
  --blue: #2563eb;
  --blue-2: #485fc7;
  --dark: #363636;
  --dark-hover: #2f2f2f;
  --ok: #047857;
  --warm: #c2410c;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  --radius: 16px;
  --shell: 960px;
  color-scheme: light;
  font-family: "Noto Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; color: var(--ink); background: var(--page); }
body.menu-open { overflow: hidden; }
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(37, 99, 235, 0.34); outline-offset: 3px; }

h1, h2, h3, h4 {
  font-family: "Google Sans", "Noto Sans", ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
}

.page-shell { width: min(var(--shell), calc(100% - 48px)); margin: 0 auto; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; color: white; background: var(--dark); border-radius: 8px; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

/* Navigation */
.site-header { position: sticky; z-index: 50; top: 0; height: 58px; border-bottom: 1px solid rgba(230, 232, 238, 0.92); background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px); }
.nav-shell { width: min(var(--shell), calc(100% - 48px)); height: 100%; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { display: inline-flex; align-items: center; gap: 9px; font-family: "Google Sans", "Noto Sans", sans-serif; font-size: 16px; font-weight: 700; letter-spacing: -0.02em; }
.wordmark-icon { width: 42px; height: 28px; display: block; overflow: hidden; border-radius: 7px; background: #1d2025; }
.wordmark-icon img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center; }
.site-nav { display: flex; align-items: center; gap: 4px; font-size: 13px; font-weight: 500; color: var(--ink-2); }
.site-nav a { padding: 7px 12px; border-radius: 999px; transition: color 0.16s ease, background-color 0.16s ease; }
.site-nav a:hover { color: var(--ink); background: var(--soft); }
.site-nav a.is-active { color: var(--blue); background: var(--blue-tint); }
.menu-button { display: none; width: 40px; height: 40px; padding: 10px; border: 0; border-radius: 10px; background: transparent; }
.menu-button span { width: 100%; height: 2px; display: block; margin: 4px 0; background: var(--ink); transition: transform 0.2s ease, opacity 0.2s ease; }

/* Hero */
.hero { padding-top: 58px; padding-bottom: 58px; }
.project-label, .part-label, .mini-label { margin: 0; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.hero > .project-label { text-align: center; }
.hero h1 { max-width: 900px; margin: 14px auto 24px; text-align: center; font-size: clamp(30px, 4.3vw, 44px); font-weight: 700; line-height: 1.13; letter-spacing: -1.1px; }
.hero h1 span { display: block; white-space: nowrap; }
.authors { display: flex; flex-wrap: wrap; justify-content: center; gap: 5px 16px; text-align: center; font-size: 15px; line-height: 1.55; }
.authors sup, .affiliations sup, .author-note sup { color: var(--blue); font-size: 0.72em; font-weight: 700; }
.affiliations { margin: 9px 0 0; display: grid; gap: 3px; color: var(--ink-2); text-align: center; font-size: 13px; line-height: 1.5; }
.author-note { margin: 7px 0 0; color: var(--quiet); text-align: center; font-size: 12px; }
.resource-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 28px 0 34px; }
.resource-button { min-height: 40px; padding: 7px 20px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; color: #fff; background: var(--dark); border: 1px solid transparent; border-radius: 999px; font-size: 13px; font-weight: 600; transition: background-color 0.16s ease; }
.resource-button:hover { background: var(--dark-hover); }
.resource-button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.paper-card { border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
.hero-figure { margin: 0; padding: 16px; }
.hero-figure img { width: 100%; display: block; object-fit: contain; border-radius: 10px; }
.pipeline-hero { padding: 20px; }
.pipeline-hero img { min-height: 220px; }
.hero-figure figcaption, .figure-card figcaption { margin-top: 13px; color: var(--ink-2); font-size: 13px; line-height: 1.55; }

/* Section rhythm */
.abstract-section { padding: 40px 0 64px; }
.abstract-section h2 { margin: 0 0 18px; text-align: center; font-size: 30px; letter-spacing: -0.5px; }
.abstract-section p { max-width: 840px; margin: 0 auto; font-size: 15px; line-height: 1.72; text-align: justify; }
.soft-section { background: var(--soft); border-top: 1px solid #f0f1f4; border-bottom: 1px solid #f0f1f4; }
.section-inner { padding-top: 60px; padding-bottom: 60px; }
.soft-section h2, .method-section h2, .resources-section h2 { margin: 8px 0 14px; font-size: clamp(29px, 4vw, 36px); line-height: 1.18; letter-spacing: -0.65px; }
.section-lede { max-width: 790px; margin: 0; color: var(--ink-2); font-size: 15px; line-height: 1.65; }
.problem-detail { max-width: 860px; margin: 17px 0 0; color: var(--ink-2); font-size: 13px; line-height: 1.65; }
.bad-case-figure { margin: 30px 0 0; padding: 18px; }
.bad-case-heading { margin: 0 0 16px; display: flex; align-items: end; justify-content: space-between; gap: 24px; }
.bad-case-heading h3 { max-width: 620px; margin: 0; font-size: 18px; line-height: 1.35; text-align: right; }
.bad-case-figure img { width: 100%; display: block; border: 1px solid var(--line); border-radius: 10px; background: white; }
.bad-case-figure figcaption { margin-top: 13px; color: var(--ink-2); font-size: 12px; line-height: 1.6; }

/* Problem facets */
.facet-grid { margin-top: 32px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.facet-grid article { min-width: 0; padding: 17px 15px; border: 1px solid var(--line); border-radius: 12px; background: white; }
.facet-grid article > span { color: var(--blue); font-family: ui-monospace, monospace; font-size: 11px; font-weight: 700; }
.facet-grid h3 { margin: 8px 0 6px; font-size: 16px; }
.facet-grid p { margin: 0; color: var(--ink-2); font-size: 12px; line-height: 1.5; }

/* Unified method */
.method-section { padding-top: 72px; padding-bottom: 72px; scroll-margin-top: 58px; }
.pipeline-bridge { margin: 30px 0 18px; padding: 11px 16px; display: flex; align-items: center; justify-content: center; gap: 17px; border: 1px solid var(--line); border-radius: 999px; background: var(--soft-alt); color: var(--ink-2); font-size: 12px; }
.pipeline-bridge span { display: inline-flex; align-items: center; gap: 7px; }
.pipeline-bridge b { width: 21px; height: 21px; display: inline-grid; place-items: center; color: white; background: var(--dark); border-radius: 50%; font-size: 10px; }
.pipeline-bridge i { color: var(--blue); font-style: normal; }
.figure-card { margin: 0; padding: 14px; }
.figure-card img { width: 100%; height: auto; display: block; border-radius: 8px; background: white; }
.method-rationale { margin: 22px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.method-rationale article { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--soft); }
.method-rationale h3 { margin: 9px 0 10px; font-size: 19px; line-height: 1.3; }
.method-rationale article > p:last-child { margin: 0; color: var(--ink-2); font-size: 13px; line-height: 1.65; }
.method-subtitle { margin: 38px 0 16px; font-size: 21px; letter-spacing: -0.3px; }
.reward-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.reward-grid article { min-width: 0; padding: 18px 16px; border: 1px solid var(--line); border-radius: 13px; background: white; }
.reward-grid article > span { color: var(--blue); font-family: ui-monospace, monospace; font-size: 10px; font-weight: 700; }
.reward-grid h3 { margin: 9px 0 7px; font-size: 16px; }
.reward-grid p { margin: 0; color: var(--ink-2); font-size: 12px; line-height: 1.55; }
.reward-grid small { margin-top: 13px; display: block; color: var(--blue); font-size: 10px; font-weight: 700; }
.reward-grid .reward-primary { border-color: #b8c9f4; background: var(--blue-tint); }
.elastic-context { margin-top: 12px; padding: 22px; display: grid; grid-template-columns: minmax(210px, 0.65fr) minmax(0, 1.35fr); gap: 24px; align-items: center; border: 1px solid var(--line); border-radius: var(--radius); background: var(--soft-alt); }
.elastic-context h3 { margin: 8px 0 0; font-size: 18px; line-height: 1.3; }
.elastic-context > p { margin: 0; color: var(--ink-2); font-size: 13px; line-height: 1.65; }
.facet-proof { margin-top: 12px; padding: 18px; display: grid; grid-template-columns: 0.65fr 0.65fr 1.2fr; gap: 16px; align-items: center; border-left: 3px solid var(--blue); background: var(--blue-tint); }
.facet-proof div { display: grid; gap: 5px; }
.facet-proof strong { color: var(--blue); font-family: "Google Sans", "Noto Sans", sans-serif; font-size: 21px; letter-spacing: -0.035em; }
.facet-proof span { color: var(--ink-2); font-size: 10px; line-height: 1.45; }
.facet-proof > p { margin: 0; color: var(--ink-2); font-size: 12px; line-height: 1.6; }
.dataset-title { margin-top: 42px; }
.method-support { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr); gap: 16px; align-items: stretch; }
.dataset-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 9px; }
.dataset-summary div { min-height: 86px; padding: 14px; display: grid; align-content: center; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
.dataset-summary strong { color: var(--blue); font-family: "Google Sans", "Noto Sans", sans-serif; font-size: 24px; letter-spacing: -0.04em; }
.dataset-summary span { margin-top: 4px; color: var(--ink-2); font-size: 10px; line-height: 1.35; }
.reward-note { padding: 20px 22px; border-left: 3px solid var(--blue); background: var(--blue-tint); }
.reward-note p:last-child { margin: 7px 0 0; color: var(--ink-2); font-size: 13px; line-height: 1.6; }
.process-grid { margin-top: 20px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.process-grid article { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.process-grid article > span { width: 31px; height: 31px; display: grid; place-items: center; color: var(--blue); border: 1.5px solid var(--blue); border-radius: 50%; font-size: 12px; font-weight: 700; }
.process-grid h3 { margin: 13px 0 7px; font-size: 17px; }
.process-grid p { margin: 0; color: var(--ink-2); font-size: 13px; line-height: 1.55; }

/* Results */
.results-section { scroll-margin-top: 58px; }
.metric-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.metric-grid article { min-height: 122px; padding: 20px; display: grid; align-content: center; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
.metric-grid strong { color: var(--blue); font-family: "Google Sans", "Noto Sans", sans-serif; font-size: clamp(30px, 4vw, 38px); line-height: 1; letter-spacing: -0.045em; }
.metric-grid span { margin-top: 10px; color: var(--ink-2); font-size: 11px; line-height: 1.4; }
.results-toolbar { margin-top: 34px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.control-group { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 999px; background: white; }
.control-group > span { padding: 0 8px; color: var(--quiet); font-size: 10px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.control-group button { min-height: 34px; padding: 5px 12px; border: 0; border-radius: 999px; color: var(--ink-2); background: transparent; font-size: 11px; font-weight: 600; cursor: pointer; }
.control-group button:hover { color: var(--ink); background: var(--soft); }
.control-group button.is-selected { color: var(--blue); background: var(--blue-tint); }
.table-context { margin: 18px 0 10px; color: var(--ink-2); font-size: 12px; line-height: 1.55; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: white; scrollbar-color: #c5cad5 transparent; }
table { width: 100%; min-width: 690px; border-collapse: collapse; font-size: 12px; }
th, td { padding: 12px 15px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th { color: var(--ink-2); background: var(--soft); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; }
tbody tr:last-child td { border-bottom: 0; }
.group-row th { padding-top: 8px; padding-bottom: 8px; color: var(--quiet); background: var(--soft-alt); font-size: 10px; font-style: italic; font-weight: 600; letter-spacing: 0.04em; }
.ours-row td { background: var(--blue-tint); }
.ours-row td:first-child { font-weight: 700; }
.ours-primary td { color: var(--blue-2); font-weight: 700; }
.metric-best { color: var(--blue); font-weight: 700; }
.metric-second { color: var(--blue-2); text-decoration: underline; text-underline-offset: 2px; }
.method-note { display: block; margin-top: 2px; color: var(--quiet); font-size: 9px; font-weight: 400; }
.table-note { margin: 11px 0 0; color: var(--quiet); font-size: 11px; line-height: 1.55; }
.subjective-results { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--line); }
.subjective-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr); gap: 32px; align-items: end; }
.subjective-heading h3 { margin: 8px 0 0; font-size: 23px; line-height: 1.3; letter-spacing: -0.35px; }
.subjective-heading > p { margin: 0; color: var(--ink-2); font-size: 12px; line-height: 1.65; }
.subjective-case-list { margin-top: 22px; display: grid; gap: 16px; }
.subjective-case { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
.subjective-case-head { margin-bottom: 13px; display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.subjective-case-head span { color: var(--quiet); font-size: 10px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.subjective-case-head h4 { margin: 3px 0 0; font-size: 16px; }
.subjective-case-head > strong { padding: 6px 10px; color: var(--blue); border-radius: 999px; background: var(--blue-tint); font-size: 10px; text-align: right; }
.case-triptych { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.case-triptych figure { min-width: 0; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); }
.case-triptych figure.is-preferred { border-color: #8faae9; box-shadow: inset 0 0 0 1px #8faae9; }
.case-triptych img { width: 100%; aspect-ratio: 16 / 9; display: block; object-fit: cover; background: #e9eaed; }
.case-triptych figcaption { min-height: 34px; padding: 8px 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--ink-2); font-size: 10px; line-height: 1.35; }
.case-triptych figcaption b { color: var(--blue); font-size: 9px; text-transform: uppercase; }
.case-metrics { margin-top: 12px; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.case-metrics table { width: 100%; min-width: 540px; border-collapse: collapse; font-size: 10px; font-variant-numeric: tabular-nums; }
.case-metrics th,
.case-metrics td { padding: 8px 11px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
.case-metrics thead th { color: var(--quiet); background: var(--soft); font-size: 9px; letter-spacing: 0.05em; text-transform: uppercase; }
.case-metrics th:first-child { text-align: left; }
.case-metrics tbody th { color: var(--ink-2); font-weight: 600; }
.case-metrics tbody tr:last-child > * { border-bottom: 0; }
.case-metrics tbody tr.is-codecarena { background: var(--blue-tint); }
.case-metrics tbody tr.is-codecarena th { color: var(--blue); }
.decision { display: inline-flex; padding: 3px 7px; border-radius: 999px; font-size: 9px; font-weight: 700; }
.decision.is-aligned { color: var(--blue); background: var(--blue-tint); }
.decision.is-misaligned { color: #8a4b35; background: #fff1ec; }
.subjective-case > p { margin: 13px 0 0; color: var(--ink-2); font-size: 12px; line-height: 1.6; }

/* Resources */
.resources-section { padding-top: 72px; padding-bottom: 72px; scroll-margin-top: 58px; }
.resource-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.resource-grid a { min-height: 142px; padding: 20px; display: grid; align-content: start; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); transition: border-color 0.16s ease, box-shadow 0.16s ease; }
.resource-grid a:hover { border-color: #cbd3e5; box-shadow: 0 14px 34px rgba(15, 23, 42, 0.07); }
.resource-grid span { font-family: "Google Sans", "Noto Sans", sans-serif; font-size: 18px; font-weight: 700; }
.resource-grid small { margin-top: 8px; color: var(--ink-2); font-size: 12px; line-height: 1.5; }
.resource-grid b { margin-top: 16px; color: var(--blue); font-size: 12px; }
.citation-card { margin-top: 30px; padding: 20px; position: relative; border-radius: var(--radius); background: var(--blue-tint); }
.citation-card > div > p:last-child { margin: 5px 0 0; color: var(--ink-2); font-size: 12px; }
.citation-card pre { margin: 18px 0 0; padding-right: 70px; overflow-x: auto; color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 11px; line-height: 1.65; white-space: pre-wrap; }
.copy-button { position: absolute; top: 17px; right: 17px; min-width: 58px; min-height: 34px; padding: 6px 11px; color: white; border: 0; border-radius: 999px; background: var(--dark); font-size: 11px; font-weight: 600; cursor: pointer; }
.copy-button:hover { background: var(--dark-hover); }

.site-footer { border-top: 1px solid var(--line); background: var(--soft-alt); }
.site-footer .page-shell { min-height: 90px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--quiet); font-size: 12px; }
.site-footer a { color: var(--blue); }

@media (max-width: 820px) {
  .facet-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facet-grid article:last-child { grid-column: 1 / -1; }
  .reward-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .elastic-context, .facet-proof { grid-template-columns: 1fr; }
  .method-support { grid-template-columns: 1fr; }
  .dataset-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-grid, .resource-grid { grid-template-columns: 1fr; }
  .resource-grid a { min-height: 0; }
}

@media (max-width: 640px) {
  .page-shell, .nav-shell { width: min(var(--shell), calc(100% - 32px)); }
  .menu-button { display: block; }
  .site-nav { display: none; position: absolute; top: 57px; left: 16px; right: 16px; padding: 10px; align-items: stretch; flex-direction: column; border: 1px solid var(--line); border-radius: 12px; background: white; box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1); }
  .site-nav.is-open { display: flex; }
  .site-nav a { min-height: 40px; display: flex; align-items: center; }
  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .hero { padding: 42px 0; }
  .hero h1 { font-size: clamp(22px, 5vw, 30px); letter-spacing: -0.7px; }
  .hero h1 span { white-space: normal; }
  .wordmark-icon { width: 38px; height: 26px; }
  .resource-buttons { display: grid; grid-template-columns: 1fr; }
  .resource-button { width: 100%; }
  .abstract-section p { text-align: left; }
  .bad-case-figure { padding: 10px; }
  .bad-case-heading { align-items: flex-start; flex-direction: column; gap: 8px; }
  .bad-case-heading h3 { text-align: left; }
  .facet-grid { grid-template-columns: 1fr; }
  .facet-grid article:last-child { grid-column: auto; }
  .method-rationale, .reward-grid { grid-template-columns: 1fr; }
  .pipeline-bridge { padding: 12px; display: grid; grid-template-columns: 1fr; justify-items: start; border-radius: 12px; }
  .pipeline-bridge i { display: none; }
  .pipeline-hero { padding: 10px; }
  .pipeline-hero img { min-height: 0; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-grid article { min-height: 96px; }
  .subjective-heading { grid-template-columns: 1fr; gap: 12px; }
  .subjective-case-head { align-items: flex-start; flex-direction: column; gap: 8px; }
  .case-triptych { grid-template-columns: repeat(3, minmax(180px, 1fr)); overflow-x: auto; padding-bottom: 6px; }
  .results-toolbar { align-items: stretch; flex-direction: column; }
  .control-group { width: 100%; justify-content: center; }
  .control-group > span { margin-right: auto; }
  .citation-card pre { padding-right: 0; padding-top: 34px; font-size: 10px; }
  .site-footer .page-shell { align-items: flex-start; justify-content: center; flex-direction: column; }
}

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