:root {
  --ink: #17191f;
  --muted: #565d6b;
  --faint: #8b919c;
  --line: #e6e4df;
  --line-strong: #d4d1ca;
  --bg: #fbfaf7;
  --panel: #ffffff;
  --soft: #f2f0eb;
  --accent: #1f6f50;
  --accent-ink: #ffffff;
  --accent-soft: #e3efe8;
  --cut: #d9622b;
  --cut-soft: #fbe9df;
  --bar: #1f6f50;
  --bar-track: #ebe8e1;
  --grid: #ece9e3;
  --s-survey: #4c7fd1;
  --s-design: #3f9a8c;
  --s-data: #c99a1e;
  --s-code: #8a6bc2;
  --s-execution: #2b9bc0;
  --s-analysis: #5e9e4a;
  --s-writing: #e07b2a;
  --t-current: #1f8a5c;
  --t-stale: #c43d3d;
  --t-old: #b8860b;
  --t-paused: #7c5cc4;
  --t-running: #2b8fc0;
  --radius: 12px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

[data-theme="dark"] {
  --ink: #eceae4;
  --muted: #a9adb5;
  --faint: #7d838d;
  --line: #2a2d33;
  --line-strong: #3a3e46;
  --bg: #111215;
  --panel: #17191d;
  --soft: #1e2025;
  --accent: #5cc493;
  --accent-ink: #0d1a13;
  --accent-soft: #19302a;
  --cut: #f08a52;
  --cut-soft: #3a2418;
  --bar: #5cc493;
  --bar-track: #262930;
  --grid: #24272d;
  --t-current: #5cc493;
  --t-stale: #f07a7a;
  --t-old: #e0b44c;
  --t-paused: #b49af0;
  --t-running: #6cc4ea;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--sans); color: var(--ink); background: var(--bg);
  line-height: 1.6; font-size: 16px; -webkit-font-smoothing: antialiased;
  transition: background 0.2s, color 0.2s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: var(--mono); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.01em; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 28px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; height: 58px; gap: 28px; }
.logo { font-family: var(--mono); font-weight: 700; font-size: 16px; color: var(--ink); letter-spacing: 0.02em; }
.logo:hover { text-decoration: none; }
.logo .cut { color: var(--cut); }
.nav nav { display: flex; gap: 2px; }
.nav nav a {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted); padding: 6px 12px; border-radius: 6px;
}
.nav nav a:hover { color: var(--ink); text-decoration: none; }
.nav nav a.active { color: var(--ink); background: var(--soft); }
.nav .spacer { flex: 1; }
.icon-btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--muted); border-radius: 8px;
  width: 34px; height: 34px; cursor: pointer; font-size: 15px; display: grid; place-items: center;
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); }

.loading { text-align: center; color: var(--faint); padding: 120px 0; font-family: var(--mono); font-size: 14px; }

/* hero */
.hero { padding: 72px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 48px; align-items: center; }
.eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
  display: flex; align-items: center; gap: 10px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cut); display: inline-block; }
.hero h1 { font-size: 64px; line-height: 1.02; margin: 18px 0 18px; font-weight: 600; }
.hero h1 .cut { color: var(--cut); }
.hero .pitch { font-family: var(--serif); font-size: 23px; line-height: 1.4; color: var(--ink); margin: 0 0 16px; }
.hero .sub { color: var(--muted); font-size: 16px; margin: 0 0 28px; max-width: 520px; }
.buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 13px; font-weight: 600;
  letter-spacing: 0.02em; padding: 10px 16px; border-radius: 8px; border: 1px solid var(--ink);
  background: var(--ink); color: var(--bg);
}
.btn:hover { text-decoration: none; opacity: 0.9; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn.off { background: transparent; color: var(--faint); border-color: var(--line); cursor: default; }
.btn.off:hover { opacity: 1; }
.meta-line { margin-top: 22px; font-family: var(--mono); font-size: 12px; color: var(--faint); }

/* replay panel */
.replay {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  box-shadow: 0 1px 0 var(--line), 0 24px 48px -28px rgba(20, 20, 20, 0.28);
  font-family: var(--mono); font-size: 12.5px;
}
.replay-head {
  display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--line);
  color: var(--muted); font-size: 12px;
}
.replay-head i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); display: inline-block; }
.replay-head .title { margin-left: 8px; }
.replay-head .turn { margin-left: auto; color: var(--ink); font-weight: 600; }
.replay-body { display: grid; grid-template-columns: 1fr 1fr; height: 372px; }
.replay-col { padding: 14px 16px; overflow-y: auto; scrollbar-width: none; }
.replay-col::-webkit-scrollbar { display: none; }
.replay-col + .replay-col { border-left: 1px solid var(--line); }
.replay-col h5 {
  margin: 0 0 10px; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); font-weight: 600;
}
.feed { list-style: none; margin: 0; padding: 0; }
.feed li {
  display: grid; grid-template-columns: 34px 1fr; gap: 6px; padding: 5px 0; line-height: 1.45;
  animation: rise 0.35s ease both;
}
.feed li b { color: var(--faint); font-weight: 600; }
.feed li.target {
  background: var(--cut-soft); margin: 4px -8px 0; padding: 7px 8px; border-radius: 6px;
}
.feed li.target b { color: var(--cut); }
.ws .row { display: flex; justify-content: space-between; gap: 8px; padding: 2.5px 0; }
.ws .row.fresh { animation: rise 0.35s ease both; }
.ws .row.dir { font-weight: 700; margin-top: 4px; }
.ws .row.child { padding-left: 14px; }
.ws .row .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tagx { font-family: var(--sans); font-size: 11px; font-style: italic; white-space: nowrap; transition: color 0.3s; }
.tagx.current { color: var(--t-current); font-style: normal; font-weight: 700; }
.tagx.stale { color: var(--t-stale); }
.tagx.superseded, .tagx.duplicate { color: var(--t-old); }
.tagx.paused { color: var(--t-paused); }
.tagx.running { color: var(--t-running); }
.tagx.new, .tagx.default { color: var(--faint); }
.replay-foot { border-top: 1px solid var(--line); padding: 12px 16px 14px; }
.ticks { display: flex; gap: 2px; height: 8px; }
.ticks span { flex: 1; border-radius: 2px; background: var(--bar-track); transition: background 0.25s; }
.ticks span.on { background: color-mix(in srgb, var(--accent) 55%, var(--bar-track)); }
.ticks span.cut { background: var(--cut); }
.replay-caption { display: flex; justify-content: space-between; margin-top: 9px; color: var(--faint); font-size: 11.5px; }
.cut-badge {
  color: var(--cut); font-weight: 700; opacity: 0; transform: translateY(3px); transition: opacity 0.35s, transform 0.35s;
}
.cut-badge.show { opacity: 1; transform: none; }
@keyframes rise { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* sections */
.section { padding: 56px 0 8px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.section h2, .page h1 { font-size: 34px; margin: 0; line-height: 1.15; }
.kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 8px;
}
.lead { font-size: 17px; color: var(--muted); max-width: 760px; margin: 8px 0 0; }
.pill {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--cut); background: var(--cut-soft);
  border-radius: 999px; padding: 3px 10px; white-space: nowrap;
}
.note { color: var(--faint); font-size: 13px; margin-top: 12px; }

/* stats strip */
.strip {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.strip > div { padding: 22px 0 20px 22px; border-left: 1px solid var(--line); }
.strip > div:nth-child(4n + 1) { border-left: none; padding-left: 0; }
.strip > div:nth-child(n + 5) { border-top: 1px solid var(--line); }
.strip .v { font-family: var(--serif); font-size: 38px; line-height: 1; font-weight: 600; }
.strip .k { font-family: var(--mono); font-size: 11.5px; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 8px; }

/* leaderboard */
.controls { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 8px; overflow: hidden; }
.seg button {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 7px 13px; background: transparent; border: none; cursor: pointer; color: var(--muted);
}
.seg button + button { border-left: 1px solid var(--line-strong); }
.seg button.active { background: var(--ink); color: var(--bg); }
.board { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { padding: 12px 14px; text-align: right; white-space: nowrap; }
th:first-child, td:first-child, th.l, td.l { text-align: left; }
thead th {
  font-family: var(--mono); font-size: 11.5px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--faint); border-bottom: 1px solid var(--line);
}
thead tr.group th { border-bottom: none; color: var(--muted); text-align: center; padding-bottom: 0; }
thead th.sortable { cursor: pointer; user-select: none; }
thead th.sortable:hover, thead th.sorted { color: var(--ink); }
thead th.sorted::after { content: " ↓"; }
tbody tr + tr td { border-top: 1px solid var(--line); }
tbody tr:hover td { background: color-mix(in srgb, var(--soft) 60%, transparent); }
td.num { font-variant-numeric: tabular-nums; font-family: var(--mono); font-size: 13.5px; }
td.best { font-weight: 700; }
td .sd { color: var(--faint); font-size: 11.5px; margin-left: 3px; }
td.rank { color: var(--faint); font-family: var(--mono); font-size: 13px; width: 36px; }
.model { font-weight: 600; }
.org { color: var(--faint); font-size: 12.5px; margin-left: 6px; }
.badge {
  display: inline-block; font-family: var(--mono); font-size: 10.5px; font-weight: 600; letter-spacing: 0.04em;
  border-radius: 4px; padding: 1px 6px; margin-left: 6px; vertical-align: 1px; text-transform: uppercase;
}
.badge.open { background: var(--accent-soft); color: var(--accent); }
.badge.partial { background: var(--cut-soft); color: var(--cut); }
td.barcell { width: 42%; min-width: 260px; }
.bar { display: grid; grid-template-columns: 92px 1fr; align-items: center; gap: 12px; }
.bar .val { font-family: var(--mono); font-size: 13.5px; text-align: right; font-variant-numeric: tabular-nums; }
.bar .val b { font-weight: 700; }
.bar .track { position: relative; height: 8px; background: var(--bar-track); border-radius: 4px; }
.bar .fill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--bar); border-radius: 4px; }
.bar .err { position: absolute; top: -3px; bottom: -3px; border-left: 1.5px solid var(--ink); border-right: 1.5px solid var(--ink); opacity: 0.55; }
.bar .err::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 1.5px solid var(--ink); }
td.heat { text-align: center; font-family: var(--mono); font-size: 13px; }

.chart { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.chart svg { width: 100%; height: auto; display: block; font-family: var(--mono); }
.chart .gridline { stroke: var(--grid); }
.chart .tick { fill: var(--faint); font-size: 11px; }
.chart .axis { fill: var(--muted); font-size: 12px; }
.chart .frontier { stroke: var(--faint); }
.chart .lbl { fill: var(--ink); font-size: 12.5px; font-weight: 600; stroke: var(--panel); stroke-width: 4px; paint-order: stroke; font-family: var(--sans); }
.chart .dot-open { fill: var(--accent); }
.chart .dot-closed { fill: var(--cut); }
.chart circle { stroke: var(--panel); stroke-width: 2; }
.legend { display: flex; gap: 18px; color: var(--muted); font-size: 13px; margin-top: 12px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: 0; }
.tip {
  position: fixed; pointer-events: none; background: var(--ink); color: var(--bg); font-size: 12.5px;
  padding: 7px 10px; border-radius: 6px; z-index: 30; display: none; line-height: 1.45; font-family: var(--mono);
}

/* compare */
.compare { display: grid; grid-template-columns: 1fr 1.25fr; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--panel); }
.compare > div { padding: 26px 28px; }
.compare > div + div { border-left: 1px dashed var(--line-strong); }
.compare h3 { margin: 0 0 4px; font-size: 21px; }
.compare .cap { color: var(--muted); font-size: 14.5px; margin: 0 0 18px; }
.compare h6 {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint);
  margin: 22px 0 10px; font-weight: 600;
}
.stages-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.stage {
  font-family: var(--mono); font-size: 11.5px; padding: 5px 9px; border-radius: 6px; color: #fff; font-weight: 600;
}
.arrow { color: var(--faint); font-size: 12px; }
.flow-svg { width: 100%; height: auto; display: block; margin-top: 6px; }
.flow-svg path { fill: none; stroke-width: 1.6; }
.flow-svg text { font-family: var(--mono); font-size: 10.5px; }
.mini-tree { font-family: var(--mono); font-size: 12.5px; line-height: 1.85; }
.mini-tree .row { display: flex; justify-content: space-between; gap: 10px; }
.mini-tree .child { padding-left: 16px; }
.mini-tree .dir { font-weight: 700; }
.cap .ok { color: var(--t-current); font-family: var(--mono); font-size: 12.5px; }

/* cards */
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: 14.5px; }
.step-no { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: 0.08em; margin-bottom: 8px; }
details.fig { margin-top: 16px; }
details.fig summary { cursor: pointer; font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
details.fig img { width: 100%; height: auto; margin-top: 12px; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }

.findings { border-top: 1px solid var(--line); }
.finding { display: grid; grid-template-columns: 90px 1fr; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.finding .rq { font-family: var(--mono); font-size: 12.5px; color: var(--accent); padding-top: 4px; }
.finding h3 { margin: 0 0 4px; font-size: 20px; }
.finding p { margin: 0; color: var(--muted); }

pre.bib {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px;
  overflow-x: auto; position: relative; margin: 0; font-size: 13px; line-height: 1.6;
}
.copy {
  position: absolute; top: 12px; right: 12px; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.04em;
  border: 1px solid var(--line-strong); background: var(--panel); color: var(--muted); border-radius: 6px; padding: 4px 10px; cursor: pointer;
}

/* pages */
.page { padding-top: 48px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 28px 0 20px; }
.tabs button {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted);
  background: none; border: none; padding: 10px 14px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button.active { color: var(--ink); border-bottom-color: var(--cut); }
.metric-defs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.chip { display: inline-block; font-family: var(--mono); font-size: 11px; font-weight: 600; border-radius: 5px; padding: 2px 8px; color: #fff; margin-right: 4px; }
.chip.ghost { background: var(--soft); color: var(--muted); }
.task-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; margin-top: 24px; }
.task-card { display: block; color: var(--ink); transition: border-color 0.15s, transform 0.15s; }
.task-card:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-1px); }
.task-card h3 { margin-top: 12px; }
.task-card .meta { font-family: var(--mono); font-size: 12px; color: var(--faint); margin-top: 12px; }
.notice { border-left: 3px solid var(--cut); background: var(--panel); padding: 12px 16px; color: var(--muted); font-size: 14.5px; border-radius: 0 8px 8px 0; margin-top: 20px; }

.timeline { position: relative; padding: 96px 0 74px; }
.timeline .track { display: flex; gap: 2px; height: 10px; }
.timeline .seg-t { flex: 1; border-radius: 2px; background: var(--bar-track); }
.timeline .seg-t.hist { background: color-mix(in srgb, var(--accent) 45%, var(--bar-track)); }
.timeline .seg-t.cut { background: var(--cut); }
.timeline .label-row { position: relative; }
.timeline .pin { position: absolute; transform: translateX(-50%); font-size: 12px; text-align: center; width: 150px; }
.timeline .pin.top { bottom: 18px; }
.timeline .pin.bottom { top: 14px; }
.timeline .pin b { display: block; font-family: var(--mono); font-size: 11.5px; }
.timeline .pin span { color: var(--muted); line-height: 1.3; display: block; }
.timeline .pin.target { width: 210px; }
.timeline .pin.target b { color: var(--cut); }
.tl-legend { display: flex; gap: 18px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.tl-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin-right: 6px; }
.task-layout { display: grid; grid-template-columns: 1.15fr 1fr; gap: 16px; margin-top: 24px; }
.instr h4 { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin: 18px 0 4px; }
.instr h4:first-of-type { margin-top: 10px; }
.instr p { margin: 0; font-size: 15px; color: var(--ink); }
.tree { font-family: var(--mono); font-size: 13px; line-height: 1.95; margin-top: 12px; }
.tree .row { display: flex; justify-content: space-between; gap: 12px; }
.tree .row.child { padding-left: 18px; }
.tree .row.dir { font-weight: 700; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { display: grid; grid-template-columns: 170px 1fr auto; gap: 14px; align-items: baseline; padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px; }
.checklist li:first-child { border-top: none; }
.dim { font-family: var(--mono); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }

.foot { border-top: 1px solid var(--line); margin-top: 80px; }
.foot .wrap { padding-top: 22px; padding-bottom: 36px; color: var(--faint); font-family: var(--mono); font-size: 12px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* rollouts */
.run-card { display: block; color: var(--ink); transition: border-color 0.15s, transform 0.15s; }
.run-card:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-1px); }
.run-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.run-card .model { font-size: 17px; }
.run-card .meta { font-family: var(--mono); font-size: 12px; color: var(--faint); margin-top: 12px; }
.run-dots { display: flex; gap: 5px; margin-top: 14px; }
.run-dots i { width: 22px; height: 8px; border-radius: 3px; background: var(--t-current); }
.run-dots i.bad { background: var(--t-stale); }
.verdict-badge {
  font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 999px; vertical-align: middle;
}
.verdict-badge.ok { background: var(--accent-soft); color: var(--t-current); }
.verdict-badge.bad { background: color-mix(in srgb, var(--t-stale) 14%, transparent); color: var(--t-stale); }
.verdict-badge.big { font-size: 13px; padding: 4px 12px; margin-left: 8px; position: relative; top: -4px; }

.seg-links { display: flex; gap: 6px; flex-wrap: wrap; }
.seg-link {
  font-family: var(--mono); font-size: 12px; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line-strong); color: var(--muted);
}
.seg-link:hover { text-decoration: none; color: var(--ink); }
.seg-link.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.player {
  position: sticky; top: 58px; z-index: 5; display: flex; align-items: center; gap: 14px;
  background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px);
  padding: 12px 0; border-bottom: 1px solid var(--line); margin-bottom: 18px;
}
.player .play {
  width: 40px; height: 40px; border-radius: 50%; border: none; background: var(--ink); color: var(--bg);
  font-size: 13px; cursor: pointer; flex: none; display: grid; place-items: center;
}
.player input[type=range] { flex: 1; accent-color: var(--cut); }
.player .counter { font-size: 13px; color: var(--muted); min-width: 64px; text-align: right; }

.run-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.run-side { display: grid; gap: 16px; position: sticky; top: 132px; }
.steps { list-style: none; margin: 0; padding: 0; max-height: 620px; overflow-y: auto; position: relative; }
.step {
  display: grid; grid-template-columns: 26px 62px minmax(0, 1fr); gap: 10px; align-items: start;
  padding: 10px 10px; border-radius: 8px; cursor: pointer; transition: background 0.2s, opacity 0.25s;
  border-left: 3px solid transparent;
}
.step + .step { margin-top: 2px; }
.step:hover { background: var(--soft); }
.step .no { font-family: var(--mono); font-size: 12px; color: var(--faint); padding-top: 2px; }
.step .label { font-size: 13.5px; font-weight: 600; word-break: break-word; }
.step .detail { font-size: 14px; color: var(--muted); margin-top: 2px; max-height: 0; overflow: hidden; transition: max-height 0.35s; }
.step.past .detail, .step.current .detail { max-height: 120px; }
.step.future { opacity: 0.38; }
.step.current { background: var(--cut-soft); border-left-color: var(--cut); }
.step.culprit { border-left-color: var(--t-stale); }
.step.culprit .no::after { content: " ⚑"; color: var(--t-stale); }
.step.flash { animation: flash 1.2s ease; }
@keyframes flash { 0%, 40% { box-shadow: 0 0 0 2px var(--t-stale) inset; } 100% { box-shadow: 0 0 0 0 transparent inset; } }
.kind {
  font-family: var(--mono); font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  border-radius: 4px; padding: 2px 6px; text-align: center; color: #fff; margin-top: 1px;
}
.k-think { background: #8b919c; }
.k-shell { background: var(--s-code); }
.k-read { background: var(--s-survey); }
.k-search { background: var(--s-design); }
.k-write, .k-edit { background: var(--s-analysis); }
.k-message { background: var(--s-writing); }

.run-tree { margin-top: 4px; font-size: 12.5px; line-height: 1.85; }
.run-tree .row { border-radius: 4px; padding: 0 6px; margin: 0 -6px; transition: background 0.3s; }
.run-tree .row .tagx { font-style: normal; font-weight: 700; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.04em; }
.run-tree .t-read .tagx { color: var(--t-running); }
.run-tree .t-listed .tagx { color: var(--faint); }
.run-tree .t-written .tagx { color: var(--t-current); }
.run-tree .t-written > span:first-child { color: var(--t-current); }
.run-tree .row.now { background: var(--cut-soft); }

.vd-hint { font-size: 13.5px; color: var(--muted); margin: 0 0 10px; }
.verdicts { list-style: none; margin: 0; padding: 0; }
.vd { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 10px; padding: 10px 0; border-top: 1px solid var(--line); }
.vd:first-child { border-top: none; }
.vd .mark {
  width: 20px; height: 20px; border-radius: 50%; border: 1.5px dashed var(--line-strong); margin-top: 1px;
  display: grid; place-items: center; font-size: 12px; font-weight: 700; transition: all 0.3s;
}
.vd.ok .mark { border: none; background: var(--t-current); color: #fff; }
.vd.ok .mark::after { content: "✓"; }
.vd.bad .mark { border: none; background: var(--t-stale); color: #fff; }
.vd.bad .mark::after { content: "✕"; }
.vd-text { font-size: 14px; }
.vd-meta { display: flex; gap: 10px; align-items: center; margin-top: 4px; }
.jump {
  font-family: var(--mono); font-size: 11px; color: var(--accent); background: none; border: 1px solid var(--line-strong);
  border-radius: 4px; padding: 1px 6px; cursor: pointer; opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.vd:not(.pending) .jump { opacity: 1; pointer-events: auto; }
.evidence { font-size: 13px; color: var(--muted); max-height: 0; overflow: hidden; transition: max-height 0.4s, margin 0.4s; }
.vd:not(.pending) .evidence { max-height: 90px; margin-top: 4px; }
.vd.bad .evidence { color: var(--t-stale); }
.vd.pending .vd-text { color: var(--muted); }

/* hero workspace snapshot */
.ws-wait { color: var(--faint); font-family: var(--sans); font-size: 13px; line-height: 1.5; margin: 6px 0 0; }
.ws .row.drop { animation: rise 0.4s ease both; animation-delay: calc(var(--i, 0) * 110ms); }

/* task header */
.task-head { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 40px; align-items: start; margin-top: 14px; }
.task-head h1 { line-height: 1.12; }
.facts { margin: 0; padding: 6px 22px; }
.fact { display: grid; grid-template-columns: 118px minmax(0, 1fr); gap: 12px; padding: 11px 0; border-top: 1px solid var(--line); }
.fact:first-child { border-top: none; }
.fact dt { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); padding-top: 2px; }
.fact dd { margin: 0; font-size: 14.5px; }
.muted { color: var(--muted); }
.linkish { background: none; border: none; padding: 0; font: inherit; color: inherit; cursor: pointer; text-align: left; }
.linkish:hover { text-decoration: underline; }
.ok-t { color: var(--t-current); font-weight: 600; }
.bad-t { color: var(--t-stale); font-weight: 600; }

/* session transcript */
.session-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.transcript { position: relative; padding-left: 30px; }
.transcript::before { content: ""; position: absolute; left: 6px; top: 10px; bottom: 10px; width: 2px; background: var(--line); border-radius: 1px; }
.msg { position: relative; padding: 4px 0 18px; }
.msg::before {
  content: ""; position: absolute; left: -30px; top: 8px; width: 14px; height: 14px; border-radius: 50%;
  box-sizing: border-box; background: var(--bg);
}
.msg.user::before { background: var(--accent); box-shadow: 0 0 0 4px var(--bg); }
.msg.assistant::before { border: 2px solid var(--line-strong); width: 10px; height: 10px; left: -28px; top: 10px; }
.msg .who { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); margin-bottom: 3px; display: flex; align-items: center; gap: 8px; }
.msg p { margin: 0; }
.msg.user p { font-size: 16px; color: var(--ink); font-weight: 500; }
.msg.assistant p { font-size: 14.5px; color: var(--muted); }
.msg.target { background: var(--cut-soft); border-radius: 10px; padding: 12px 16px 14px; margin: 2px 0 14px -14px; }
.msg.target::before { background: var(--cut); left: -16px; top: 16px; box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px color-mix(in srgb, var(--cut) 35%, transparent); }
.msg.target .who { color: var(--cut); font-weight: 700; }
.task-pill { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; background: var(--cut); color: #fff; border-radius: 999px; padding: 1px 8px; }
.msg.ph-future { opacity: 0.42; }
.msg.ph-future.user::before { background: var(--faint); }
.cutline { position: relative; display: flex; align-items: center; gap: 10px; margin: 0 0 16px -30px; color: var(--cut); font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: 0.04em; }
.cutline::after { content: ""; flex: 1; border-top: 1.5px dashed var(--cut); }
.cutline span { background: var(--bg); padding-right: 4px; }

.session-legend { position: sticky; top: 84px; }
.leg-row { display: grid; grid-template-columns: 14px minmax(0, 1fr); gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.leg-row:first-of-type { border-top: none; padding-top: 0; }
.leg-row b { font-size: 14.5px; }
.leg-row p { margin: 3px 0 0; font-size: 13.5px; color: var(--muted); }
.leg { width: 12px; height: 12px; border-radius: 50%; margin-top: 4px; display: block; }
.leg.bg { background: var(--accent); }
.leg.task { background: var(--cut); }
.leg.future { background: var(--faint); opacity: 0.6; }

/* task details */
.res-h { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin: 18px 0 2px; }
.res-note { font-size: 13px; color: var(--muted); margin: -2px 0 6px 0; font-family: var(--sans); line-height: 1.45; }
.checklist li.ck { grid-template-columns: 44px minmax(0, 1fr) auto; }
.ck-id { font-size: 13px; font-weight: 700; color: var(--accent); }
.ck-short { font-weight: 600; font-size: 15px; }
.ck-text { color: var(--muted); font-size: 14px; margin-top: 2px; }
.src { font-family: var(--mono); font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); background: var(--soft); border-radius: 4px; padding: 2px 7px; white-space: nowrap; }
.src.explicit { color: var(--accent); background: var(--accent-soft); }
.feature { display: block; max-width: none; }
.feature h3 { font-size: 24px; margin-top: 10px; }
.feature p { max-width: 820px; }

/* executions */
.run-head { font-size: 14.5px; margin: 8px 0 0 !important; color: var(--muted); }
.exec-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.exec-grid .card p { font-size: 14.5px; }
.verdicts.compact .vd { padding: 7px 0; }
.verdicts.compact .vd-text { font-size: 13.5px; }
.vd .evidence { max-height: none; }
.vd.ok .evidence { color: var(--muted); }

/* authors */
.authors { display: grid; grid-template-columns: 1fr 1.6fr 1fr; gap: 24px; }
.authors .names { margin: 0; line-height: 1.9; font-size: 15px; }
.authors .names span { display: inline-block; margin-right: 14px; white-space: nowrap; }
.authors sup { color: var(--cut); font-size: 11px; margin-left: 1px; }

/* leaderboard extras */
tr.avg td { font-style: italic; color: var(--muted); border-top: 1.5px solid var(--line-strong) !important; }
tr.avg td.heat { background: transparent !important; color: var(--muted) !important; }
sup.fn { color: var(--cut); margin-left: 2px; cursor: help; }

/* focus */
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--cut); outline-offset: 3px; border-radius: 6px; }
.notfound { padding: 60px 0 40px; }

/* scroll motion */
.progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 30;
  background: var(--cut); transform-origin: 0 50%; transform: scaleX(0); pointer-events: none;
}
.nav { transition: box-shadow 0.25s, background 0.2s; }
.nav.scrolled { box-shadow: 0 6px 20px -14px rgba(0, 0, 0, 0.35); }

.rv {
  opacity: 0; transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--d, 0ms);
}
.rv.in { opacity: 1; transform: none; }
.replay.rv { transform: translateY(22px) scale(0.985); }
.replay.rv.in { transform: translateY(var(--px, 0px)); transition-property: opacity, transform; }
.replay.rv.in.settled { transition: opacity 0.7s, transform 0.08s linear; }

.board .fill { transform: scaleX(0); transform-origin: 0 50%; transition: transform 1s cubic-bezier(0.2, 0.7, 0.2, 1); transition-delay: calc(var(--i, 0) * 90ms + 200ms); }
.board.in .fill { transform: scaleX(1); }
.board .err { opacity: 0; transition: opacity 0.5s; transition-delay: calc(var(--i, 0) * 90ms + 900ms); }
.board.in .err { opacity: 0.55; }
.board tbody tr { opacity: 0; transform: translateX(-8px); transition: opacity 0.5s, transform 0.5s; transition-delay: calc(var(--i, 0) * 70ms); }
.board.in tbody tr { opacity: 1; transform: none; }
.board td.heat { transition: opacity 0.4s; }
.board:not(.in) td.heat { opacity: 0; }
.board.in td.heat { transition-delay: calc(var(--k, 0) * 22ms + 150ms); }

.chart circle { transform-box: fill-box; transform-origin: center; transform: scale(0); transition: transform 0.55s cubic-bezier(0.3, 1.6, 0.5, 1); transition-delay: calc(var(--i, 0) * 110ms + 300ms); }
.chart.in circle { transform: scale(1); }
.chart .lbl { opacity: 0; transition: opacity 0.4s; transition-delay: calc(var(--i, 0) * 110ms + 550ms); }
.chart.in .lbl { opacity: 1; }
.chart .frontier { opacity: 0; transition: opacity 0.8s; transition-delay: 1100ms; }
.chart.in .frontier { opacity: 1; }
.draw { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.4s cubic-bezier(0.4, 0, 0.2, 1); transition-delay: var(--dd, 0ms); }
.in .draw, .draw.in { stroke-dashoffset: 0; }
.flow-svg text.arc-label { opacity: 0; transition: opacity 0.5s; transition-delay: calc(var(--dd, 0ms) + 900ms); }
.in .flow-svg text.arc-label { opacity: 1; }

.timeline .seg-t { transition: opacity 0.3s; transition-delay: calc(var(--i, 0) * 18ms); }
.timeline.rv:not(.in) .seg-t { opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  .rv, .board .fill, .board .err, .board tbody tr, .board td.heat, .chart circle, .chart .lbl, .chart .frontier, .flow-svg text.arc-label, .timeline .seg-t {
    opacity: 1 !important; transform: none !important;
  }
  .draw { stroke-dashoffset: 0 !important; }
  .progress { display: none; }
  * { animation: none !important; transition: none !important; }
}
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
  .hero h1 { font-size: 48px; }
  .compare, .grid3, .grid2, .metric-defs, .task-layout, .run-layout, .authors { grid-template-columns: minmax(0, 1fr); }
  .exec-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .task-head, .session-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .session-legend { position: static; order: -1; }
  .run-side { position: static; }
  .compare > div + div { border-left: none; border-top: 1px dashed var(--line-strong); }
  .checklist li { grid-template-columns: 1fr; gap: 2px; }
  .nav nav a { padding: 6px 8px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 18px; }
  .nav .wrap { gap: 10px; }
  .nav nav a { font-size: 11.5px; padding: 6px 7px; letter-spacing: 0.02em; }
  .nav nav a[data-route="home"] { display: none; }
  .hero { padding: 40px 0 36px; }
  .hero .wrap { gap: 32px; }
  .hero h1 { font-size: 44px; }
  .hero .pitch { font-size: 20px; }
  .replay.rv.in { transform: none; }
  .replay-body { grid-template-columns: minmax(0, 1fr); height: auto; }
  .replay-col { height: 230px; }
  .replay-col + .replay-col { border-left: none; border-top: 1px solid var(--line); height: 250px; }
  .replay-caption { flex-direction: column; gap: 4px; }
  .strip { grid-template-columns: 1fr 1fr; }
  .strip > div:nth-child(odd) { border-left: none; padding-left: 0; }
  .strip > div:nth-child(even) { border-left: 1px solid var(--line); padding-left: 16px; }
  .strip > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .strip .k { font-size: 10.5px; }
  .strip .v { font-size: 32px; }
  .section { padding-top: 44px; }
  .section h2, .page h1 { font-size: 27px; }
  .section-head .controls { width: 100%; }
  .finding { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .compare > div { padding: 20px 18px; }
  .mini-tree .row, .tree .row { font-size: 12px; }
  .mini-tree .row span:first-child, .tree .row span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  pre.bib { font-size: 11.5px; }
  .org, .tok { display: none; }
  th, td { padding: 11px 9px; }
  td.barcell { width: auto; min-width: 0; }
  .bar { grid-template-columns: 66px minmax(60px, 1fr); gap: 8px; }
  .bar .sd { display: none; }
  td.l { white-space: normal; }
  .model { font-size: 14px; white-space: nowrap; display: inline-block; margin-right: 2px; }
  .badge { margin-left: 4px; font-size: 9.5px; }
  .flow-wrap { overflow-x: auto; margin: 0 -18px; padding: 0 18px; scrollbar-width: none; }
  .flow-wrap .flow-svg { min-width: 560px; }
  .timeline { padding: 100px 0 56px; }
  .timeline .pin { width: 74px; font-size: 10.5px; }
  .timeline .pin span { display: none; }
  .timeline .pin.target { width: 150px; }
  .timeline .pin.target span { display: block; }
  .foot .wrap { flex-direction: column; gap: 4px; }
  .run-layout { grid-template-columns: minmax(0, 1fr); }
  .run-side { position: static; }
  .exec-grid { grid-template-columns: minmax(0, 1fr); }
  .fact { grid-template-columns: 96px minmax(0, 1fr); }
  .checklist li.ck { grid-template-columns: 36px minmax(0, 1fr); }
  .checklist li.ck .src { grid-column: 2; justify-self: start; }
  .steps { max-height: 460px; }
  .step { grid-template-columns: 22px 54px minmax(0, 1fr); gap: 8px; padding: 9px 6px; }
  .player { gap: 10px; }
  .player #speed { display: none; }
  .verdict-badge.big { display: inline-block; margin: 6px 0 0; top: 0; }
}