:root {
  --ink: #17231f;
  --muted: #5f6d68;
  --line: #dce3e0;
  --line-strong: #bdc9c4;
  --paper: #ffffff;
  --canvas: #f2f5f3;
  --teal: #087d72;
  --teal-soft: #e5f2ef;
  --blue: #315f9d;
  --blue-soft: #e9eff7;
  --rust: #a5412e;
  --rust-soft: #f9ebe7;
  --gold: #956000;
  --gold-soft: #f8f0dc;
  --shadow: 0 10px 28px rgba(20, 44, 36, 0.07);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 14px/1.5 "IBM Plex Sans", sans-serif;
  letter-spacing: 0;
}

button,
input,
select { color: inherit; font: inherit; }
button,
select { cursor: pointer; }
a { color: inherit; }

.page {
  width: min(1520px, calc(100% - 40px));
  margin: 0 auto;
  padding: 10px 0 40px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 310px);
  gap: 28px;
  align-items: end;
  margin-top: 14px;
  padding: 30px 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  margin-bottom: 8px;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: 0;
}

.subtitle {
  max-width: 900px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 16px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.badge,
.setting-pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--canvas);
  color: #485650;
  font: 600 10px/1.2 "IBM Plex Mono", monospace;
}

.snapshot {
  min-height: 72px;
  padding-left: 20px;
  border-left: 3px solid var(--teal);
  color: var(--muted);
}

.snapshot strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 14px;
}

.score-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.score-card {
  min-width: 0;
  min-height: 116px;
  padding: 17px 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.score-card .label {
  margin-bottom: 8px;
  color: var(--muted);
  font: 600 10px/1.2 "IBM Plex Mono", monospace;
  text-transform: uppercase;
}

.score-card .value {
  overflow: hidden;
  margin-bottom: 4px;
  font-size: 23px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.score-card .note {
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 12px;
}

.panel {
  margin-bottom: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.comparison-studio { padding: 22px; }

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.comparison-studio > .section-heading {
  margin: -22px -22px 18px;
}

.section-heading h2 { margin: 0; font-size: 19px; }
.section-heading p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }

.case-explorer {
  overflow: hidden;
}

.case-explorer iframe {
  display: block;
  width: 100%;
  height: min(760px, 78vh);
  min-height: 580px;
  border: 0;
  background: var(--paper);
}

.case-explorer-note {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--canvas);
  color: var(--muted);
  font: 500 10px/1.5 "IBM Plex Mono", monospace;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
  color: var(--muted);
  font: 500 10px/1.2 "IBM Plex Mono", monospace;
}

.legend span::before {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 5px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 2px;
  content: "";
  vertical-align: -1px;
}

.legend .best-key::before { background: #dff1e9; }
.legend .second-key::before { background: #e6eef9; }
.legend .reference-key::before { background: #fff4d9; }

.studio-controls {
  display: grid;
  grid-template-columns: repeat(5, minmax(150px, 1fr));
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--canvas);
}

.control-field { min-width: 0; }
.control-field.wide { grid-column: span 2; }
.control-field label {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font: 600 9px/1.2 "IBM Plex Mono", monospace;
  text-transform: uppercase;
}

.control-field select,
.control-field input {
  width: 100%;
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper);
}

.method-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.method-picker button {
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--muted);
  font: 600 10px/1.2 "IBM Plex Mono", monospace;
}

.method-picker button[aria-pressed="true"] {
  border-color: var(--teal);
  background: var(--teal-soft);
  color: #075e57;
}

.chart-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  gap: 12px;
  margin-top: 12px;
}

.chart-panel {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 5px;
}

.chart-panel h3 { margin-bottom: 3px; font-size: 14px; }
.chart-panel p { margin-bottom: 10px; color: var(--muted); font-size: 11px; }
.chart-frame { position: relative; height: 320px; }

.table-wrap { overflow: auto; }
.leaderboard {
  width: 100%;
  min-width: 1080px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.leaderboard th,
.leaderboard td {
  padding: 10px 11px;
  border-bottom: 1px solid var(--line);
  text-align: right;
  white-space: nowrap;
}

.leaderboard thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #eef2f0;
  color: #42504a;
  font: 600 10px/1.2 "IBM Plex Mono", monospace;
  text-transform: uppercase;
}

.leaderboard th:first-child,
.leaderboard td:first-child { text-align: left; }
.leaderboard tbody tr:hover { background: #f7f9f8; }
.leaderboard .reference-row { background: #fffaf0; }
.leaderboard .best { background: #e1f1e9; color: #086b55; font-weight: 700; }
.leaderboard .second { background: #e9f0f8; color: #315f9d; font-weight: 700; }

.method-cell { display: flex; align-items: center; gap: 8px; }
.method-cell > span:last-child { display: grid; }
.method-cell strong { font-size: 13px; }
.method-cell small { color: var(--muted); font-size: 10px; }
.method-cell a { color: var(--teal); text-decoration: none; }
.method-cell a:hover { text-decoration: underline; }

.rank {
  display: inline-grid;
  flex: 0 0 24px;
  width: 24px;
  height: 22px;
  place-items: center;
  border-radius: 4px;
  background: #e8eeeb;
  color: #46524d;
  font: 600 9px/1 "IBM Plex Mono", monospace;
}
.rank.reference { background: var(--gold-soft); color: var(--gold); }

.table-note {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 16px;
  color: var(--muted);
  font-size: 11px;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}
.demo-card { min-width: 0; padding: 16px; background: var(--paper); }
.demo-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.demo-head h3 { margin: 0; font-size: 16px; }
.demo-head span { color: var(--muted); font: 600 9px/1.2 "IBM Plex Mono", monospace; }
.demo-card video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background: #111;
  object-fit: contain;
}
.demo-card p { margin: 9px 0 0; color: var(--muted); font-size: 11px; }

.protocol-details { overflow: hidden; }
.protocol-details summary {
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 700;
  list-style-position: inside;
}
.protocol-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.protocol-grid article { padding: 17px 18px; border-right: 1px solid var(--line); }
.protocol-grid article:last-child { border-right: 0; }
.protocol-grid h3 { margin-bottom: 6px; font-size: 13px; }
.protocol-grid p { margin-bottom: 0; color: var(--muted); font-size: 12px; }
.protocol-grid code { color: var(--teal); font: 500 11px/1.4 "IBM Plex Mono", monospace; }

.empty { padding: 36px !important; color: var(--muted); text-align: center !important; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 2px 0;
  color: var(--muted);
  font-size: 11px;
}

@media (max-width: 1050px) {
  .score-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .studio-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .control-field.wide { grid-column: span 2; }
  .chart-grid { grid-template-columns: 1fr; }
  .chart-panel { min-height: 360px; }
  .protocol-grid { grid-template-columns: 1fr; }
  .protocol-grid article { border-right: 0; border-bottom: 1px solid var(--line); }
  .protocol-grid article:last-child { border-bottom: 0; }
}

@media (max-width: 720px) {
  .page { width: min(100% - 20px, 1520px); padding-top: 2px; }
  .topbar { grid-template-columns: 1fr; gap: 18px; padding: 22px 18px; }
  h1 { font-size: 27px; }
  .subtitle { font-size: 14px; }
  .score-strip { grid-template-columns: 1fr; }
  .score-card { min-height: 96px; }
  .comparison-studio { padding: 14px; }
  .comparison-studio > .section-heading { margin: -14px -14px 14px; }
  .section-heading { flex-direction: column; padding: 15px; }
  .legend { justify-content: flex-start; }
  .studio-controls { grid-template-columns: 1fr; }
  .control-field.wide { grid-column: span 1; }
  .chart-grid { grid-template-columns: minmax(0, 1fr); }
  .chart-frame { height: 280px; }
  .demo-grid { grid-template-columns: 1fr; }
  .case-explorer iframe { min-height: 640px; }
  .case-explorer-note { flex-direction: column; gap: 3px; padding: 10px 15px; }
  .table-note,
  footer { flex-direction: column; }
}