/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --surface2: #faf4f4;
  --border: #eadada;
  --accent: #C44E52;
  --accent2: #A03A3E;
  --accent-soft: rgba(196, 78, 82, 0.08);
  --accent-soft2: rgba(196, 78, 82, 0.14);
  --accent-tint: #fdf0f0;
  --text: #1e293b;
  --muted: #6b7280;
  --muted-2: #a8a8a8;
  --green: #16a34a;
  --green-soft: #dcfce7;
  --amber: #d97706;
  --amber-soft: #fef9c3;
  --red: #dc2626;
  --red-soft: #fee2e2;
  --purple: #7c3aed;
  --purple-soft: #ede9fe;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(196, 78, 82, 0.12);
  --radius: 8px;
  --radius-lg: 10px;
  --nav-h: 60px;
  --max-width: 1200px;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Source Code Pro", "Fira Code", "SF Mono", Consolas, monospace;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--accent2); }

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

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

button { cursor: pointer; font-family: inherit; }

/* ===== Container ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  padding: 0.75rem 0;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 100%;
}

.navbar .nav-logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.navbar .nav-logo:hover { color: var(--accent); }

.navbar .nav-logo .dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.navbar .nav-links {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  list-style: none;
}

.navbar .nav-links a {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  transition: all var(--transition);
}

.navbar .nav-links a:hover {
  color: var(--text);
  background: var(--surface2);
}

.navbar .nav-links a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

.navbar .nav-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.gh-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
}

.gh-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* ===== Page wrapper ===== */
.page { padding-top: var(--nav-h); }

/* ===== Sections ===== */
section { padding: 3rem 0; }
section.alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-title span { color: var(--accent); }

.section-subtitle {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 740px;
  margin: 0 auto 2rem;
  line-height: 1.65;
}

/* ===== Hero (landing) ===== */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* ===== Page hero (inner pages) ===== */
.page-hero {
  padding: 3rem 0 2rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% -20%, rgba(196, 78, 82, 0.07), transparent);
  pointer-events: none;
}

.page-hero .container { position: relative; }

.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.4rem;
}

.page-hero h1 span { color: var(--accent); }

.page-hero p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 55% at 50% -5%, rgba(196, 78, 82, 0.1), transparent);
  pointer-events: none;
}

.hero-inner {
  position: relative;
}

.hero h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text);
}

.hero h1 .accent { color: var(--accent); }

.hero .authors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
  margin-bottom: 4px;
  font-size: 0.92rem;
  color: var(--text);
}

.hero .authors span { white-space: nowrap; }

.hero .affiliations {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 8px;
  margin-bottom: 1.75rem;
}

.hero .affiliations sup { margin: 0 1px; }

.affiliations-inline {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.9rem;
  row-gap: 0.5rem;
}

.aff-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.aff-item a {
  display: inline-flex;
  align-items: center;
  opacity: 0.9;
  transition: opacity var(--transition), transform var(--transition);
}

.aff-item a:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.aff-sep {
  color: var(--muted);
}

.aff-logo {
  display: block;
  width: auto;
  object-fit: contain;
}

.aff-logo-cmu { height: 36px; }
.aff-logo-amazon { height: 20px; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 3px rgba(196, 78, 82, 0.3);
}

.btn-primary:hover {
  background: var(--accent2);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 78, 82, 0.35);
}

.btn-outline {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ===== Stats pill ===== */
.hero-stats {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: 0 auto 2rem;
}

.hero-stats .h-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.85rem 1.6rem;
  border-right: 1px solid var(--border);
}

.hero-stats .h-stat:last-child { border-right: none; }

.hero-stats .h-stat-n {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero-stats .h-stat-l {
  font-size: 0.66rem;
  color: var(--muted);
  margin-top: 0.3rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Legacy .stats-row retained for compatibility (mapped to pill look) */
.stats-row {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.stats-row .stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.85rem 1.6rem;
  border-right: 1px solid var(--border);
}
.stats-row .stat-item:last-child { border-right: none; }
.stats-row .stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stats-row .stat-label {
  font-size: 0.66rem;
  color: var(--muted);
  margin-top: 0.3rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stats-center { text-align: center; }

/* ===== Section Tabs (in page-hero) ===== */
.section-tabs {
  display: inline-flex;
  gap: 0.25rem;
  padding: 3px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.section-tabs .tab {
  padding: 0.4rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 6px;
  transition: all var(--transition);
}

.section-tabs .tab:hover {
  color: var(--accent);
  background: var(--accent-tint);
}

.section-tabs .tab.active {
  background: var(--surface);
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* ===== Cards ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  transition: all var(--transition);
}

.card-hover:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== Highlights (3-col feature cards) ===== */
.hl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.hl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.hl-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hl-icon { font-size: 1.4rem; margin-bottom: 0.85rem; }

.hl-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.hl-card p {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.hl-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.hl-tag {
  font-size: 0.68rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 5px;
  background: var(--accent-tint);
  color: var(--accent2);
}

/* ===== Abstract ===== */
.abstract-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text);
  max-width: 900px;
  margin: 0 auto;
}

/* ===== Contributions ===== */
.contributions {
  list-style: none;
  counter-reset: contrib;
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.contributions li {
  counter-increment: contrib;
  position: relative;
  padding: 1rem 1.2rem 1rem 3.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text);
  transition: border-color var(--transition);
}

.contributions li:hover { border-color: var(--accent); }

.contributions li::before {
  content: counter(contrib);
  position: absolute;
  left: 1rem;
  top: 1rem;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-soft2);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contributions li strong { font-weight: 700; }

/* ===== Framework steps ===== */
.framework-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.step-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.step-card .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-soft2);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.step-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.step-card > p {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.step-metrics {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.step-metrics li {
  position: relative;
  padding-left: 14px;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
}

.step-metrics li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.step-metrics li strong { color: var(--text); font-weight: 600; }

/* ===== Method Cards ===== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}

.method-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  transition: all var(--transition);
}

.method-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.method-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.method-card h3 i { color: var(--accent); }

.method-card p {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ===== Findings ===== */
.findings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.finding-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.finding-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.finding-card .icon { font-size: 1.4rem; margin-bottom: 0.75rem; }

.finding-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.finding-card p {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ===== Figures ===== */
.figure-full {
  text-align: center;
  margin: 1.5rem 0;
}

.figure-full img {
  margin: 0 auto;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.5rem;
  max-width: 100%;
}

.figure-full .caption,
.figure-grid .caption,
.teaser .caption {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ===== Tables (shared base) ===== */
.taxonomy-table-wrap,
.results-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.taxonomy-table th,
.results-table th {
  text-align: left;
  padding: 0.7rem 1rem;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  white-space: nowrap;
}

.taxonomy-table td,
.results-table td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.taxonomy-table tr:last-child td,
.results-table tr:last-child td { border-bottom: none; }

.taxonomy-table tbody tr:hover td,
.results-table tbody tr:hover td { background: var(--accent-tint); }

/* Taxonomy specific */
.taxonomy-table td a {
  color: var(--accent);
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.taxonomy-table td a:hover { color: var(--accent2); text-decoration: underline; }

.taxonomy-table .category-cell {
  font-weight: 600;
  color: var(--text);
  background: var(--surface2);
  vertical-align: middle;
  border-right: 1px solid var(--border);
}

.taxonomy-table .total-row td {
  background: var(--accent-soft);
  color: var(--text);
  font-weight: 600;
  border-top: 2px solid var(--accent);
}

.taxonomy-table th:last-child,
.taxonomy-table td:last-child { text-align: center; }

/* Results table specific */
.results-table {
  min-width: 780px;
  font-size: 0.82rem;
}

.results-table th {
  text-align: center;
  padding: 0.55rem 0.7rem;
}

.results-table th:first-child { text-align: left; padding-left: 1rem; }

.results-table th.group-header {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}

.results-table td {
  padding: 0.55rem 0.7rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  color: var(--text);
}

.results-table td:first-child {
  text-align: left;
  padding-left: 1rem;
  font-weight: 500;
  color: var(--text);
}

.results-table .section-header td {
  background: var(--accent-tint);
  color: var(--accent2);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: left;
  padding: 0.55rem 1rem;
  border-top: 1px solid var(--border);
}

.results-table .baseline-row td {
  background: var(--surface2);
  color: var(--muted);
  font-style: italic;
}

.results-table .baseline-row td:first-child { color: var(--text); font-style: normal; font-weight: 600; }

.results-table .best {
  font-weight: 700;
  color: var(--accent);
}

.results-table .second {
  text-decoration: underline;
  text-decoration-color: var(--muted-2);
  text-underline-offset: 3px;
}

.results-table th.sortable {
  cursor: pointer;
  user-select: none;
  transition: color var(--transition);
}
.results-table th.sortable:hover { color: var(--accent); }

.results-table .avg-row td {
  background: var(--accent-soft);
  font-weight: 600;
}

/* ===== Run-It-Yourself CTA ===== */
.run-cta {
  text-align: center;
  margin-top: 2rem;
}

.run-cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  padding: 0.75rem 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.run-cta-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
  text-decoration: none;
}

.run-cta-link .run-arrow { transition: transform var(--transition); }
.run-cta-link:hover .run-arrow { transform: translateX(3px); }

/* Hero action row: tabs on the left, prominent CTA pill on the right */
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.run-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 1.25rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 999px;
  box-shadow: 0 1px 3px rgba(196, 78, 82, 0.3);
  transition: all var(--transition);
  white-space: nowrap;
}

.run-pill:hover {
  background: var(--accent2);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(196, 78, 82, 0.4);
  text-decoration: none;
}

.run-pill .run-arrow { transition: transform var(--transition); }
.run-pill:hover .run-arrow { transform: translateX(3px); }

@media (max-width: 640px) {
  .run-pill { padding: 0.45rem 1rem; font-size: 0.82rem; }
}

/* ===== Model Leaderboard ===== */
.mlb-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.mlb-header {
  padding: 1.1rem 1.4rem 0.9rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.mlb-header h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.mlb-header .mlb-caption {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.2rem;
  font-weight: 400;
}

.mlb-tabs {
  display: inline-flex;
  gap: 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  flex-wrap: wrap;
}

.mlb-tab {
  padding: 0.38rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.mlb-tab:hover { color: var(--text); }

.mlb-tab.active {
  background: var(--surface);
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.mlb-table-wrap {
  overflow-x: auto;
}

.mlb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 640px;
}

.mlb-table-wide { min-width: 920px; }

.mlb-table th {
  text-align: center;
  padding: 0.55rem 0.75rem;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  white-space: nowrap;
}

.mlb-table th.group-header {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}

.mlb-table th.sortable {
  cursor: pointer;
  user-select: none;
  transition: color var(--transition), background var(--transition);
}

.mlb-table th.sortable:hover {
  color: var(--accent);
  background: var(--accent-tint);
}

.mlb-sort-ico {
  font-size: 0.65em;
  opacity: 0.4;
  margin-left: 0.4em;
  transition: opacity var(--transition);
}

.mlb-table th.sortable:hover .mlb-sort-ico { opacity: 0.8; }

.mlb-table th.sort-active {
  color: var(--accent);
}

.mlb-table th.sort-active .mlb-sort-ico { opacity: 1; }

.mlb-table td {
  padding: 0.72rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.mlb-table td:nth-child(2) { text-align: left; }

.mlb-table tbody tr:last-child td { border-bottom: none; }
.mlb-table tbody tr:hover td { background: var(--accent-tint); }

.mlb-table th:first-child,
.mlb-table td:first-child { width: 52px; text-align: center; }

.mlb-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--surface2);
  color: var(--muted);
}

.mlb-rank.r1 { background: #fef9c3; color: #a16207; }
.mlb-rank.r2 { background: #f4f4f5; color: #52525b; }
.mlb-rank.r3 { background: #fff7ed; color: #c2410c; }

.mlb-model {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.mlb-model-name {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.mlb-model-org {
  font-size: 0.7rem;
  color: var(--muted);
}

.mlb-acc-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 140px;
}

.mlb-acc-bar {
  flex: 1;
  height: 6px;
  background: var(--surface2);
  border-radius: 3px;
  overflow: hidden;
  min-width: 60px;
}

.mlb-acc-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 3px;
  transition: width 0.5s ease;
}

.mlb-acc-val {
  font-weight: 700;
  color: var(--accent);
  font-size: 0.9rem;
  min-width: 52px;
  text-align: right;
}

.mlb-num {
  font-size: 0.82rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.mlb-tokens {
  color: var(--muted);
  font-size: 0.8rem;
}

.mlb-foot {
  padding: 0.65rem 1.4rem;
  background: var(--surface2);
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.mlb-foot code {
  color: var(--accent);
  background: var(--accent-tint);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

@media (max-width: 640px) {
  .mlb-header { flex-direction: column; align-items: flex-start; }
}

/* ===== Task filter bar ===== */
.task-filters {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.task-filter-group {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.task-fb {
  padding: 0.32rem 0.9rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.2;
  white-space: nowrap;
}

.task-fb:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.task-fb.active {
  background: var(--accent-soft2);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.task-search {
  margin-left: auto;
  padding: 0.4rem 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.85rem;
  width: 240px;
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
}

.task-search:focus { border-color: var(--accent); }
.task-search::placeholder { color: var(--muted-2); }

.task-result-info {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.task-empty {
  text-align: center;
  color: var(--muted);
  padding: 3rem 0;
  font-size: 0.9rem;
  grid-column: 1 / -1;
}

@media (max-width: 768px) {
  .task-search { margin-left: 0; width: 100%; }
}

/* ===== Task cards grid ===== */
.task-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.9rem;
  align-items: stretch;
}

.task-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  cursor: pointer;
}

.task-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

.task-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.task-id {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.task-inst {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-tint);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}

.task-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text);
  letter-spacing: -0.01em;
  word-break: break-word;
}

.task-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.task-tag {
  font-size: 0.66rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.task-tag.cat-se  { background: #dbeafe; color: #1d4ed8; }
.task-tag.cat-ir  { background: #dcfce7; color: #15803d; }
.task-tag.cat-pt  { background: #fef3c7; color: #92400e; }
.task-tag.cat-da  { background: #ede9fe; color: #6d28d9; }
.task-tag.cat-cc  { background: #fce7f3; color: #be185d; }
.task-tag.cat-uo  { background: #f1f5f9; color: #475569; }

.task-sub {
  background: var(--surface2);
  color: var(--muted);
  border: 1px solid var(--border);
}

.task-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.task-card-foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--transition);
  margin-top: auto;
}

.task-card:hover .task-card-foot { opacity: 1; }

/* ===== Method comparison composite ===== */
.method-compare {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.method-compare img {
  width: 100%;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.5rem;
}

@media (max-width: 768px) {
  .method-compare { grid-template-columns: 1fr; }
}

/* ===== BibTeX ===== */
.bibtex-section { background: var(--surface); }

.bibtex-block {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.bibtex-block pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
  color: var(--text);
}

.bibtex-block .copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.bibtex-block .copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-tint);
}

/* ===== Footer ===== */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }

/* ===== Utility ===== */
.text-muted { color: var(--muted); }
.text-center { text-align: center; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hl-grid, .framework-steps, .findings-grid {
    grid-template-columns: 1fr 1fr;
  }
  .method-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .navbar .nav-links { display: none; }
  .hero { padding: 3rem 0 2rem; }
  .hero h1 { font-size: 1.45rem; }
  .hero-stats { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-stats .h-stat { border-right: none; border-bottom: 1px solid var(--border); }
  .hero-stats .h-stat:nth-child(odd) { border-right: 1px solid var(--border); }
  .hero-stats .h-stat:nth-last-child(-n+2) { border-bottom: none; }
  .stats-row { display: grid; grid-template-columns: 1fr 1fr; }
  .hl-grid, .framework-steps, .findings-grid {
    grid-template-columns: 1fr;
  }
  section { padding: 2rem 0; }
  .abstract-content { padding: 1.25rem; font-size: 0.88rem; }
  .affiliations-inline { gap: 0.6rem; }
  .aff-item { gap: 0.4rem; }
  .aff-logo-cmu { height: 28px; }
  .aff-logo-amazon { height: 16px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.25rem; }
  .btn { padding: 0.45rem 0.9rem; font-size: 0.8rem; }
}