:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #17202a;
  --muted: #66727f;
  --hairline: #e6e4dc;
  --accent: #0f766e;
  --accent-strong: #0b5a54;
  --accent-soft: #dcf0ed;
  --accent-col: #eaf4f2;
  --accent-col-hover: #d2e9e5;
  --accent-bar: #0f766e;
  --neutral-bar: #93a8bc;
  --zebra: #efede6;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(23, 32, 42, 0.05), 0 4px 16px rgba(23, 32, 42, 0.04);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --rank-width: 48px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

section[id] { scroll-margin-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.wrap-wide { max-width: 1320px; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.nav-brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: var(--accent-strong);
  text-decoration: none;
  white-space: nowrap;
}

.nav-links { display: flex; align-items: center; gap: 22px; }

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  transition: color 0.15s;
  white-space: nowrap;
}

.nav-links a:hover { color: var(--accent-strong); }
.nav-links .nav-ext { color: var(--ink); font-weight: 600; }

.site-header {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, #0a2724 0%, #0f766e 78%, #12877e 100%);
  color: #fff;
  padding: 58px 0 38px;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("assets/wave.svg") repeat;
  -webkit-mask-image: linear-gradient(100deg, transparent 34%, rgba(0, 0, 0, 0.9) 80%);
  mask-image: linear-gradient(100deg, transparent 34%, rgba(0, 0, 0, 0.9) 80%);
  pointer-events: none;
}

.site-header .wrap { position: relative; z-index: 1; }

.site-header h1 {
  margin: 0 0 10px;
  font-size: 48px;
  font-weight: 750;
  letter-spacing: -0.03em;
}

.tagline {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  max-width: 620px;
  font-size: 16px;
}

.links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.links .link-primary {
  display: inline-block;
  padding: 7px 20px;
  border-radius: 999px;
  background: #fff;
  color: var(--accent-strong);
  font-weight: 650;
  text-decoration: none;
  font-size: 14px;
  transition: background 0.15s, transform 0.15s;
}

.links .link-primary:hover { background: var(--accent-soft); }

.links .link-text {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(255, 255, 255, 0.4);
  font-size: 14px;
  transition: color 0.15s, text-decoration-color 0.15s;
}

.links .link-text:hover { color: #fff; text-decoration-color: #fff; }

.stats {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 22px;
}

.stat {
  display: flex;
  flex-direction: column;
  padding-right: 38px;
  margin-right: 38px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

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

.stat-num {
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.stat-label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: rgba(255, 255, 255, 0.62);
  margin-top: 2px;
}

main { padding: 4px 0 10px; }

section#overview {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 28px;
  margin: 26px 0;
}

section h2 {
  margin: 0 0 18px;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.chart-scale {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 118px;
  gap: 14px;
  margin-bottom: 6px;
}

.scale-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 3px;
}

section#leaderboard {
  margin: 26px 0;
  padding: 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 16px;
}

.section-head h2 { margin: 0; font-size: 22px; }

.controls {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.control-group { display: flex; align-items: center; gap: 10px; }

.control-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  min-width: 44px;
  text-align: right;
}

.segmented {
  display: inline-flex;
  background: var(--zebra);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.segmented button {
  border: none;
  background: transparent;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}

.segmented button:hover { color: var(--ink); }

.segmented button.active {
  background: var(--surface);
  color: var(--accent-strong);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(23, 32, 42, 0.12);
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chips button {
  padding: 5px 13px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12.5px;
  cursor: pointer;
  transition: all 0.15s;
}

.chips button:hover { border-color: var(--accent); color: var(--accent); }

.chips button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.table-scroll {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
}

thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  text-align: right;
  font-family: var(--mono);
  font-weight: 600;
  color: var(--muted);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  border-bottom: 1.5px solid var(--hairline);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  background: var(--surface);
}

thead th:nth-child(-n+3) { text-align: left; }
thead th:hover { color: var(--accent-strong); }
thead th.sorted-asc::after { content: " ↑"; }
thead th.sorted-desc::after { content: " ↓"; }

thead th:nth-child(1) { left: 0; z-index: 4; width: var(--rank-width); min-width: var(--rank-width); }
thead th:nth-child(2) { left: var(--rank-width); z-index: 4; }
thead th:nth-child(4) { background: var(--accent-col); }

.th-sub {
  display: block;
  font-size: 10px;
  font-weight: 500;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
  margin-top: 1px;
}

th.has-tip { text-decoration: underline dotted; text-underline-offset: 3px; }

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--hairline);
  text-align: right;
  white-space: nowrap;
}

tbody td:nth-child(-n+3) { text-align: left; }

tbody td:nth-child(1) {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--surface);
  width: var(--rank-width);
}

tbody td:nth-child(2) {
  position: sticky;
  left: var(--rank-width);
  z-index: 1;
  background: var(--surface);
  box-shadow: 8px 0 10px -8px rgba(23, 32, 42, 0.18);
}

tbody td:nth-child(4) { background: var(--accent-col); }

tbody tr.data-row:last-child td { border-bottom: none; }
tbody tr.data-row { transition: background 0.12s; }
tbody tr.data-row:hover td { background: var(--accent-soft); }
tbody tr.data-row:hover td:nth-child(4) { background: var(--accent-col-hover); }

td.model-name { font-weight: 600; }

.effort {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.85em;
  margin-left: 5px;
}

.vendor-icon {
  display: inline-flex;
  width: 14px;
  height: 14px;
  margin-left: 6px;
  color: var(--muted);
  vertical-align: -2px;
}

.vendor-icon svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: currentColor;
}
td.agent-name { color: var(--muted); font-size: 13px; }

td.rank {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

td.rank .medal, td.rank .rank-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
}

td.rank .medal {
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
}

td.score-pct, td.score-count { font-family: var(--mono); font-size: 13.5px; }
td.score-pct { font-weight: 600; }
td.score-count { color: var(--ink); }

td.cost-cell,
td.precision-cell { font-family: var(--mono); font-size: 13.5px; color: var(--ink); }

td.best { color: var(--accent-strong); }
td.best .val {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

tr.group-row td {
  background: var(--surface);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: left;
  padding: 14px 14px 8px;
  border-bottom: 1px solid var(--hairline);
}

.table-hint {
  display: none;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.precision-note {
  margin: 6px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.chart { display: flex; flex-direction: column; gap: 7px; }

.chart-row {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 118px;
  align-items: center;
  gap: 14px;
  min-height: 26px;
}

.chart-label {
  font-size: 13.5px;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chart-track {
  background: var(--zebra);
  border-radius: 999px;
  height: 14px;
  overflow: hidden;
}

.chart-bar {
  height: 100%;
  border-radius: 999px;
  min-width: 3px;
  transition: width 0.45s ease;
}

.chart-bar.proprietary { background: linear-gradient(90deg, var(--accent-strong), var(--accent-bar)); }
.chart-bar.open-source { background: var(--neutral-bar); }

.chart-value {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.legend {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted);
}

.swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 4px;
  margin-left: 16px;
}

.swatch:first-child { margin-left: 0; }
.swatch.proprietary { background: var(--accent-bar); }
.swatch.open-source { background: var(--neutral-bar); }

section#citation {
  margin: 26px 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--hairline);
}

.bibtex-wrap { position: relative; }

pre {
  background: #0f1c1a;
  color: #c9e4df;
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.55;
  margin: 0;
  font-family: var(--mono);
}

#copy-bibtex {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 12px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  background: transparent;
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}

#copy-bibtex:hover { border-color: rgba(255, 255, 255, 0.6); color: #fff; }

.site-footer {
  margin-top: 34px;
  padding: 20px 0 30px;
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
}

@media (max-width: 760px) {
  .wrap { padding: 0 16px; }

  .site-header { padding: 40px 0 30px; }
  .site-header h1 { font-size: 36px; }

  .stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 12px;
  }

  .stat {
    padding-right: 0;
    margin-right: 0;
    border-right: none;
  }

  .stat-num { font-size: 24px; }

  .chart-scale { grid-template-columns: 1fr; }

  .chart-row {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "label value"
      "track track";
    gap: 4px 10px;
    margin-bottom: 6px;
  }

  .chart-label { grid-area: label; text-align: left; font-size: 12.5px; }
  .chart-value { grid-area: value; }
  .chart-track { grid-area: track; height: 10px; }

  .controls { align-items: flex-start; }

  section#overview { padding: 20px 18px; }

  .table-scroll {
    border-radius: 10px;
    -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 28px), transparent);
    mask-image: linear-gradient(90deg, #000 calc(100% - 28px), transparent);
  }

  .table-hint { display: block; }
  .hint { display: none; }
}

@media (max-width: 520px) {
  .nav-links .nav-item { display: none; }
  .nav-links { gap: 16px; }
}