/* RuVector "Engine" identity (brand/BRAND.md). Charts use validated steps:
   ruvector #0fa3b3 · Jev #c08530 (dark surface, adjacent CVD ΔE 16.8). */

@font-face { font-family: "Outfit"; src: url("/fonts/Outfit-Variable.ttf") format("truetype"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/fonts/JetBrainsMono-Variable.ttf") format("truetype"); font-weight: 100 800; font-display: swap; }

:root {
  color-scheme: dark;
  --bg: #0b0e13;
  --bg-lift: #121722;
  --panel: #14181f;
  --raised: #181d25;
  --line: #272c35;
  --line-2: #343b46;
  --ink: #e7ebef;
  --ink-2: #a3aebd;
  --ink-3: #7b899d;
  --cyan: #19d4e6;
  --green: #26d968;
  --rv: #0fa3b3;
  --jev: #c08530;
  --good: #0ca30c;
  --bad: #d03b3b;
  --warn: #fab219;
  --display: "Outfit", ui-sans-serif, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --gutter: clamp(20px, 5vw, 88px);
  --step--1: clamp(0.8rem, 0.78rem + 0.1vw, 0.86rem);
  --step-0: clamp(0.95rem, 0.92rem + 0.15vw, 1.05rem);
  --step-1: clamp(1.15rem, 1.05rem + 0.5vw, 1.45rem);
  --step-2: clamp(1.5rem, 1.2rem + 1.4vw, 2.4rem);
  --step-3: clamp(2.1rem, 1.4rem + 3.2vw, 4.4rem);
  --step-4: clamp(2.6rem, 1.5rem + 5vw, 6.4rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 700px at 70% -10%, var(--bg-lift), transparent 70%),
    radial-gradient(circle at 1px 1px, rgb(231 235 239 / 0.045) 1px, transparent 0) 0 0 / 22px 22px,
    var(--bg);
  color: var(--ink);
  font: 400 var(--step-0)/1.55 var(--display);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }
code, kbd { font-family: var(--mono); font-size: 0.88em; color: var(--ink); background: var(--raised); border: 1px solid var(--line); border-radius: 4px; padding: 0.05em 0.35em; }
b { font-weight: 600; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 10; background: var(--panel); padding: 8px 12px; }

.kicker {
  font: 500 var(--step--1)/1.3 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 14px;
}
.kicker b { color: var(--cyan); font-weight: 600; margin-right: 0.6em; }
em.c1 { font-style: normal; color: var(--cyan); }
em.c2 { font-style: normal; color: var(--green); }

/* --- top bar ------------------------------------------------------------- */
.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: clamp(12px, 3vw, 40px);
  padding: 12px var(--gutter);
  background: rgb(11 14 19 / 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.wordmark { font: 600 1.05rem/1 var(--display); letter-spacing: -0.02em; color: var(--ink); text-decoration: none; white-space: nowrap; }
.wordmark span { color: var(--ink-3); font-weight: 400; margin: 0 0.15em; }
.top nav { display: flex; gap: clamp(10px, 2vw, 28px); overflow-x: auto; scrollbar-width: none; }
.top nav a { font: 500 0.8rem/1 var(--mono); color: var(--ink-2); text-decoration: none; white-space: nowrap; padding: 6px 0; }
.top nav a b { color: var(--ink-3); font-weight: 500; margin-right: 4px; }
.top nav a:hover { color: var(--ink); }
.engine-pill { margin: 0 0 0 auto; display: flex; align-items: center; gap: 8px; font: 500 0.75rem/1 var(--mono); color: var(--ink-2); white-space: nowrap; }
.engine-pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--warn); box-shadow: 0 0 0 3px rgb(250 178 25 / 0.15); animation: pulse 1.4s var(--ease) infinite; }
.engine-pill.ready i { background: var(--green); box-shadow: 0 0 0 3px rgb(38 217 104 / 0.15); animation: none; }
@keyframes pulse { 50% { opacity: 0.35; } }

/* --- hero ------------------------------------------------------------- */
main { padding: 0 var(--gutter); }
.hero { padding: clamp(56px, 10vh, 120px) 0 clamp(40px, 7vh, 80px); max-width: 1320px; }
.hero h1 { margin: 0; font: 600 var(--step-4)/0.98 var(--display); letter-spacing: -0.035em; }
.hero h1 span { display: block; }
.hero h1 span + span { margin-top: 0.08em; }
.lede { max-width: 60ch; margin: 28px 0 0; font-size: var(--step-1); line-height: 1.45; color: var(--ink-2); }
.lede b { color: var(--ink); }

.hero-grid {
  margin-top: clamp(36px, 6vh, 64px);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  border-top: 1px solid var(--line);
}
.stat { padding: 22px 24px 24px 0; border-bottom: 1px solid var(--line); }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--line); }
.stat .q { font: 500 0.72rem/1.2 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.stat .pair { display: flex; flex-direction: column; gap: 4px; margin-top: 12px; }
.stat .big::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: var(--rv); margin-right: 12px; vertical-align: 0.35em; }
.stat .big { font: 600 clamp(2.2rem, 1.6rem + 2.2vw, 3.6rem)/1 var(--display); letter-spacing: -0.04em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.stat .big small { font-size: 0.45em; letter-spacing: 0; color: var(--ink-2); margin-left: 4px; }
.stat .vs { font: 500 1rem/1.2 var(--display); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.stat .who { display: flex; gap: 14px; margin-top: 8px; font: 500 0.72rem/1.2 var(--mono); color: var(--ink-3); }
.stat .who span::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 6px; vertical-align: 0; }
.stat .who .r::before { background: var(--rv); }
.stat .who .j::before { background: var(--jev); }
.stat .verdict { margin-top: 12px; }

.badge { display: inline-flex; align-items: center; gap: 6px; font: 600 0.7rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; padding: 5px 8px; border-radius: 4px; border: 1px solid; }
.badge.superior { color: var(--green); border-color: rgb(38 217 104 / 0.4); background: rgb(38 217 104 / 0.08); }
.badge.non-inferior { color: var(--ink); border-color: var(--line-2); background: var(--raised); }
.badge.loses { color: #f08a8a; border-color: rgb(208 59 59 / 0.5); background: rgb(208 59 59 / 0.1); }
.badge.superior::before { content: "▲"; font-size: 0.8em; }
.badge.non-inferior::before { content: "="; }
.badge.loses::before { content: "▼"; font-size: 0.8em; }

.caveats { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 0; margin: 26px 0 0; }
.caveats li { font: 500 0.75rem/1.4 var(--mono); color: var(--ink-3); }
.caveats li::before { content: "※ "; color: var(--warn); }

/* --- scenes ------------------------------------------------------------ */
.scene { padding: clamp(64px, 12vh, 140px) 0 clamp(40px, 8vh, 80px); border-top: 1px solid var(--line); max-width: 1440px; }
.scene-head { max-width: 980px; margin-bottom: clamp(28px, 4vh, 48px); }
.scene-head h2 { margin: 0; font: 600 var(--step-3)/1.02 var(--display); letter-spacing: -0.035em; }
.sub { margin: 18px 0 0; max-width: 68ch; color: var(--ink-2); font-size: var(--step-1); line-height: 1.45; }
.note { color: var(--ink-3); font: 400 0.8rem/1.5 var(--mono); max-width: 80ch; }

.btn {
  font: 600 0.9rem/1 var(--display); letter-spacing: -0.005em;
  padding: 13px 20px; border-radius: 8px; border: 1px solid var(--line-2);
  background: var(--raised); color: var(--ink); cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s, border-color 0.2s, opacity 0.2s;
}
.btn:hover:not(:disabled) { border-color: var(--ink-3); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: progress; }
.btn.primary { background: var(--cyan); border-color: var(--cyan); color: #06222a; }
.btn.primary:hover:not(:disabled) { background: #4fe1ef; border-color: #4fe1ef; }
.btn.ghost { background: transparent; }
.btn[aria-pressed="true"] { border-color: var(--jev); color: var(--ink); background: rgb(192 133 48 / 0.12); }

.seg { display: inline-flex; border: 1px solid var(--line-2); border-radius: 8px; padding: 3px; background: var(--panel); }
.seg button { font: 500 0.85rem/1 var(--display); color: var(--ink-2); background: none; border: 0; padding: 10px 14px; border-radius: 6px; cursor: pointer; }
.seg button small { font: 400 0.68rem/1 var(--mono); color: var(--ink-3); margin-left: 4px; }
.seg button[aria-checked="true"] { background: var(--raised); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }

.select { display: inline-flex; flex-direction: column; gap: 6px; font: 500 0.68rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.select select { font: 500 0.85rem/1 var(--mono); color: var(--ink); background: var(--panel); border: 1px solid var(--line-2); border-radius: 8px; padding: 10px 12px; letter-spacing: 0; text-transform: none; }

/* --- race --------------------------------------------------------------- */
.race-controls { display: flex; flex-wrap: wrap; align-items: end; gap: 16px 22px; margin-bottom: 28px; }
.lanes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(16px, 2.4vw, 32px); }
.lane { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: clamp(18px, 2vw, 28px); position: relative; overflow: hidden; }
.lane::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 2px; background: var(--rv); }
.lane[data-lane="jev"]::before { background: var(--jev); }
.lane header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.lane h3 { margin: 0; font: 600 var(--step-1)/1.1 var(--display); letter-spacing: -0.02em; display: flex; align-items: baseline; gap: 10px; }
.lane h3 small { font: 400 0.75rem/1 var(--mono); color: var(--ink-3); letter-spacing: 0; }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; transform: translateY(-1px); }
.sw.rv { background: var(--rv); }
.sw.jev { background: var(--jev); }
.lane-sub { margin: 0; font: 400 0.72rem/1.2 var(--mono); color: var(--ink-3); }
.clock { margin: 18px 0 6px; font: 600 clamp(2.6rem, 2rem + 3vw, 4.6rem)/1 var(--display); letter-spacing: -0.045em; font-variant-numeric: tabular-nums; }
.clock small { font-size: 0.38em; color: var(--ink-3); margin-left: 6px; letter-spacing: 0; }
.lane.finished .clock span { color: var(--ink); }
.counters { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 0 0 20px; }
.counters div { border-top: 1px solid var(--line); padding-top: 8px; }
.counters dt { font: 500 0.62rem/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.counters dd { margin: 4px 0 0; font: 600 1.15rem/1.1 var(--display); font-variant-numeric: tabular-nums; }

.grid { display: grid; grid-template-columns: repeat(15, minmax(0, 1fr)); gap: 3px; }
.cell { aspect-ratio: 1; border-radius: 3px; border: 1px solid var(--line-2); background: transparent; position: relative; cursor: default; transition: background 0.25s var(--ease), border-color 0.25s, transform 0.35s var(--ease); }
.cell.fly { border-color: currentColor; animation: fly 0.9s var(--ease) infinite; }
.lane[data-lane="ruvector"] .cell.fly { color: var(--rv); }
.lane[data-lane="jev"] .cell.fly { color: var(--jev); }
@keyframes fly { 50% { opacity: 0.4; } }
.cell.ok { background: var(--good); border-color: var(--good); }
.cell.bad { background: transparent; border-color: var(--bad); }
.cell.bad::after { content: ""; position: absolute; inset: 22%; background:
  linear-gradient(45deg, transparent 42%, var(--bad) 42% 58%, transparent 58%),
  linear-gradient(-45deg, transparent 42%, var(--bad) 42% 58%, transparent 58%); }
.cell.land { transform: scale(1.08); }
.cell:hover { outline: 2px solid var(--ink); outline-offset: 1px; z-index: 1; }

.legend-row { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; margin: 18px 0 0; font: 500 0.75rem/1 var(--mono); color: var(--ink-3); }
.legend-row span { display: inline-flex; align-items: center; gap: 8px; }
.legend-row .hint { margin-left: auto; }
.cell-key { display: inline-block; width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--line-2); position: relative; }
.cell-key.ok { background: var(--good); border-color: var(--good); }
.cell-key.bad { border-color: var(--bad); }
.cell-key.bad::after { content: ""; position: absolute; inset: 18%; background:
  linear-gradient(45deg, transparent 40%, var(--bad) 40% 60%, transparent 60%),
  linear-gradient(-45deg, transparent 40%, var(--bad) 40% 60%, transparent 60%); }

.ticker { margin-top: 22px; min-height: 64px; display: grid; grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr)); gap: 18px; align-items: start; padding: 16px 18px; border: 1px dashed var(--line-2); border-radius: 10px; font-size: 0.92rem; }
.ticker:empty { display: none; }
.ticker .t { color: var(--ink); }
.ticker .t small { display: block; font: 500 0.66rem/1.4 var(--mono); color: var(--ink-3); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 4px; }
.ticker .a { font: 500 0.82rem/1.4 var(--mono); color: var(--ink-2); }
.ticker .a b { color: var(--ink); font-weight: 600; }
.ticker .a .ok::before { content: "✓ "; color: var(--good); }
.ticker .a .bad::before { content: "✗ "; color: #f08a8a; }

.scoreboard { margin-top: 30px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); overflow: hidden; animation: rise 0.7s var(--ease); }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }
.scoreboard h3 { margin: 0; padding: 18px 22px; font: 600 var(--step-1)/1.2 var(--display); border-bottom: 1px solid var(--line); }
.scoreboard table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.scoreboard th, .scoreboard td { padding: 13px 22px; text-align: left; border-bottom: 1px solid var(--line); }
.scoreboard th { font: 500 0.66rem/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.scoreboard td.num { font: 600 1.1rem/1 var(--display); }
.scoreboard td.dim { color: var(--ink-3); font: 400 0.78rem/1.3 var(--mono); }
.scoreboard tr:last-child td { border-bottom: 0; }
.scoreboard .foot-note { padding: 14px 22px; margin: 0; font: 400 0.75rem/1.5 var(--mono); color: var(--ink-3); border-top: 1px solid var(--line); }

/* --- learn ---------------------------------------------------------------- */
.learn-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
.octagon-fig { margin: 0; position: sticky; top: 90px; }
#octagon { width: 100%; height: auto; display: block; overflow: visible; }
#octagon .ring { fill: none; stroke: var(--line); }
#octagon .spoke { stroke: var(--line); stroke-dasharray: 2 6; }
#octagon .vlabel { font: 600 15px/1 var(--display); fill: var(--ink); letter-spacing: -0.01em; }
#octagon .vcount { font: 500 11px/1 var(--mono); fill: var(--ink-3); }
#octagon .dot { transition: transform 1.1s var(--ease); }
#octagon .dot circle { fill: var(--good); stroke: var(--bg); stroke-width: 1.5; }
#octagon .dot path { stroke: var(--bad); stroke-width: 2.4; stroke-linecap: round; }
#octagon .dot:hover circle, #octagon .dot:focus circle { stroke: var(--ink); stroke-width: 2; }
#octagon .hub { font: 600 44px/1 var(--display); fill: var(--ink); letter-spacing: -0.04em; }
#octagon .hubsub { font: 500 11px/1 var(--mono); fill: var(--ink-3); letter-spacing: 0.12em; text-transform: uppercase; }
.octagon-fig figcaption { margin-top: 10px; font: 400 0.78rem/1.5 var(--mono); color: var(--ink-3); text-align: center; }

.learn-side { display: flex; flex-direction: column; gap: 22px; }
.stage-ctl { display: flex; flex-wrap: wrap; gap: 12px; }
.stages { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 8px; }
.stages button { width: 100%; text-align: left; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--ink-2); cursor: pointer; font: 500 0.8rem/1.25 var(--display); transition: border-color 0.2s, background 0.2s; }
.stages button b { display: block; font: 600 1.15rem/1.1 var(--display); color: var(--ink); font-variant-numeric: tabular-nums; }
.stages button small { font: 400 0.66rem/1.3 var(--mono); color: var(--ink-3); }
.stages button[aria-current="true"] { border-color: var(--rv); background: rgb(15 163 179 / 0.1); }
.stages button.ft[aria-current="true"] { border-color: var(--green); background: rgb(38 217 104 / 0.08); }

.chart-fig { margin: 0; }
.chart-title { font: 500 0.78rem/1.4 var(--mono); color: var(--ink-2); margin-bottom: 10px; }
.chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart .axis text, .chart .tick { font: 400 11px/1 var(--mono); fill: var(--ink-3); }
.chart .grid line { stroke: var(--line); }
.chart .baseline { stroke: var(--line-2); }
.chart .lbl { font: 500 11px/1 var(--mono); fill: var(--ink-2); }
.chart .lbl-strong { font: 600 12px/1 var(--display); fill: var(--ink); }
.chart .hit { fill: transparent; cursor: crosshair; }
.chart .xhair { stroke: var(--ink-3); stroke-dasharray: 3 3; pointer-events: none; }
.chart.duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.chart.duo svg { max-width: 520px; }

/* --- honesty --------------------------------------------------------------- */
.honest-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.honest-grid .wide { grid-column: 1 / -1; }
.verdicts { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.verdicts .v { padding: 16px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 16px; align-items: baseline; }
.verdicts .v h4 { margin: 0; font: 600 1rem/1.3 var(--display); }
.verdicts .v p { margin: 0; grid-column: 1 / -1; color: var(--ink-2); font-size: 0.9rem; }
.verdicts .v .nums { font: 600 1.2rem/1 var(--display); font-variant-numeric: tabular-nums; white-space: nowrap; }
.verdicts .v .nums span { color: var(--ink-3); font-weight: 500; font-size: 0.85em; }

/* --- teach ---------------------------------------------------------------- */
.teach-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); grid-template-areas: "form answer" "loop answer"; gap: clamp(20px, 3vw, 44px); align-items: start; }
.teach-form { grid-area: form; }
.answer { grid-area: answer; }
.loop-compare { grid-area: loop; }
textarea { width: 100%; resize: vertical; font: 400 1.05rem/1.5 var(--display); color: var(--ink); background: var(--panel); border: 1px solid var(--line-2); border-radius: 10px; padding: 14px 16px; }
textarea:focus { outline: 2px solid var(--cyan); outline-offset: 1px; }
.presets { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 18px; }
.presets button { font: 400 0.78rem/1.3 var(--display); color: var(--ink-2); background: transparent; border: 1px dashed var(--line-2); border-radius: 999px; padding: 7px 12px; cursor: pointer; text-align: left; max-width: 100%; }
.presets button:hover { color: var(--ink); border-color: var(--ink-3); }
.row { display: flex; gap: 12px; flex-wrap: wrap; }

.answer { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: clamp(18px, 2vw, 28px); min-height: 320px; }
.answer .empty { color: var(--ink-3); margin: 0; }
.answer .meta { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font: 500 0.72rem/1.3 var(--mono); color: var(--ink-3); margin-bottom: 18px; }
.answer .meta b { color: var(--green); font-weight: 600; }
.qblock { padding: 14px 0; border-top: 1px solid var(--line); }
.qblock h4 { margin: 0 0 10px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font: 500 0.7rem/1.2 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.qblock h4 span { letter-spacing: 0; text-transform: none; font-size: 0.72rem; }
.qblock .pick { font: 600 var(--step-2)/1 var(--display); letter-spacing: -0.03em; margin: 0 0 10px; }
.bars { display: grid; gap: 5px; }
.bar { display: grid; grid-template-columns: 82px minmax(0, 1fr) 48px; align-items: center; gap: 10px; font: 400 0.75rem/1 var(--mono); color: var(--ink-2); }
.bar .track { height: 8px; background: var(--raised); border-radius: 4px; overflow: hidden; }
.bar .fill { height: 100%; background: var(--rv); border-radius: 0 4px 4px 0; transform-origin: left; transition: width 0.6s var(--ease); }
.bar .v { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }
.bar.lead .fill { background: var(--cyan); }
.fix { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.fix button { font: 500 0.74rem/1 var(--mono); color: var(--ink-2); background: var(--raised); border: 1px solid var(--line); border-radius: 6px; padding: 7px 9px; cursor: pointer; }
.fix button:hover { color: var(--ink); border-color: var(--ink-3); }
.fix button[aria-pressed="true"] { color: #06222a; background: var(--green); border-color: var(--green); }
.fix-label { font: 500 0.66rem/1 var(--mono); color: var(--ink-3); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 12px; }
.meter { position: relative; height: 10px; border-radius: 5px; background: var(--raised); margin: 4px 0 6px; }
.meter .fill { position: absolute; inset: 0 auto 0 0; background: var(--rv); border-radius: 5px; transition: width 0.6s var(--ease); }
.meter .cut { position: absolute; top: -4px; bottom: -4px; width: 2px; background: var(--ink); }
.learned-flash { animation: flash 1.2s var(--ease); }
@keyframes flash { 0% { box-shadow: 0 0 0 0 rgb(38 217 104 / 0.6); } 100% { box-shadow: 0 0 0 18px rgb(38 217 104 / 0); } }

.loop-compare { border-top: 1px solid var(--line); padding-top: 18px; }
.loop-compare h4 { margin: 0 0 12px; font: 500 0.7rem/1.2 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.loop-compare .cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.loop-compare .cols div h5 { margin: 0 0 8px; font: 600 0.95rem/1.2 var(--display); display: flex; align-items: center; gap: 8px; }
.loop-compare dl { margin: 0; display: grid; gap: 6px; }
.loop-compare dl div { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px dotted var(--line); padding-bottom: 4px; font-size: 0.85rem; }
.loop-compare dt { color: var(--ink-3); }
.loop-compare dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 600; }
.loop-compare p { margin: 12px 0 0; font: 400 0.74rem/1.5 var(--mono); color: var(--ink-3); }

/* --- receipts ------------------------------------------------------------- */
.receipts { display: grid; grid-template-columns: minmax(0, 1fr); gap: 34px; }
.receipts table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 0.9rem; }
.receipts caption { text-align: left; font: 500 0.78rem/1.4 var(--mono); color: var(--ink-2); padding-bottom: 10px; }
.receipts th, .receipts td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.receipts thead th { font: 500 0.64rem/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.receipts td.n { text-align: right; white-space: nowrap; }
.receipts th.n { text-align: right; }
.receipts tr.rv td:first-child { box-shadow: inset 3px 0 0 var(--rv); }
.receipts tr.jv td:first-child { box-shadow: inset 3px 0 0 var(--jev); }
.receipts .scroll { overflow-x: auto; }
.receipts .cols2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px; }
.receipts h3 { margin: 0 0 10px; font: 600 1.1rem/1.3 var(--display); }
.receipts ul { margin: 0; padding-left: 18px; color: var(--ink-2); }
.receipts li { margin-bottom: 6px; }
.receipts pre { margin: 0; padding: 14px 16px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow-x: auto; font: 400 0.8rem/1.6 var(--mono); color: var(--ink-2); }

.foot { padding: 40px var(--gutter) 60px; border-top: 1px solid var(--line); color: var(--ink-3); font: 400 0.78rem/1.6 var(--mono); }

/* --- tooltip ---------------------------------------------------------------- */
.tip { position: fixed; z-index: 20; max-width: 340px; pointer-events: none; background: var(--raised); border: 1px solid var(--line-2); border-radius: 10px; padding: 10px 12px; font-size: 0.82rem; line-height: 1.4; color: var(--ink); box-shadow: 0 12px 30px rgb(0 0 0 / 0.4); }
.tip small { display: block; font: 500 0.66rem/1.4 var(--mono); color: var(--ink-3); letter-spacing: 0.06em; margin-top: 6px; }
.tip .ok { color: #5fd35f; }
.tip .bad { color: #f08a8a; }

/* --- responsive ----------------------------------------------------------- */
@media (max-width: 1020px) {
  .learn-layout, .honest-grid { grid-template-columns: minmax(0, 1fr); }
  .octagon-fig { position: static; max-width: 560px; margin: 0 auto; }
  .teach-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "form" "answer" "loop"; }
}
@media (max-width: 760px) {
  .top nav { display: none; }
  .engine-pill span { max-width: 52vw; overflow: hidden; text-overflow: ellipsis; }
  .lanes { grid-template-columns: minmax(0, 1fr); }
  .counters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ticker { grid-template-columns: minmax(0, 1fr); }
  .stat + .stat { padding-left: 0; border-left: 0; }
  .chart.duo, .receipts .cols2, .loop-compare .cols { grid-template-columns: minmax(0, 1fr); }
  .legend-row .hint { margin-left: 0; }
  .scoreboard th, .scoreboard td { padding: 10px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
.receipts details summary { cursor: pointer; padding: 6px 0 12px; }
.receipts details summary:hover { color: var(--ink); }
.receipts td.dim { color: var(--ink-3); font-size: 0.82rem; }

/* --- page-load reveal (hero only) ------------------------------------------ */
.hero .kicker, .hero h1 span, .hero .lede, .hero-grid, .caveats { animation: reveal 0.9s var(--ease) both; }
.hero h1 span:nth-child(1) { animation-delay: 0.08s; }
.hero h1 span:nth-child(2) { animation-delay: 0.2s; }
.hero .lede { animation-delay: 0.34s; }
.hero-grid { animation-delay: 0.46s; }
.caveats { animation-delay: 0.6s; }
@keyframes reveal { from { opacity: 0; transform: translateY(18px); } }
.stat { animation: reveal 0.8s var(--ease) both; }
.stat:nth-child(2) { animation-delay: 0.08s; }
.stat:nth-child(3) { animation-delay: 0.16s; }
.stat:nth-child(4) { animation-delay: 0.24s; }

/* --- where Jev wins ---------------------------------------------------------- */
.jev-wins { margin-top: clamp(40px, 6vh, 72px); }
.jev-wins > h3 { margin: 0; font: 600 var(--step-2)/1.1 var(--display); letter-spacing: -0.03em; }
.wins { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(18px, 3vw, 40px); margin-top: 24px; }
.win { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: clamp(18px, 2vw, 26px); }
.win header { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.win header .kicker { margin: 0; }
.win h4 { margin: 12px 0 16px; font: 600 1.1rem/1.3 var(--display); }
.win p { color: var(--ink-2); font-size: 0.9rem; margin: 14px 0 0; }
.wbars { display: grid; gap: 8px; }
.wbar { display: grid; grid-template-columns: minmax(150px, 1.1fr) minmax(0, 2fr) 56px; gap: 10px; align-items: center; font: 400 0.78rem/1.2 var(--mono); color: var(--ink-2); }
.wt { height: 10px; background: var(--raised); border-radius: 5px; overflow: hidden; }
.wf { display: block; height: 100%; border-radius: 0 5px 5px 0; }
.wbar.jev .wf { background: var(--jev); }
.wbar.rv .wf { background: var(--rv); }
.wbar.dim .wf { opacity: 0.5; }
.wv { text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; }
.wtable { display: grid; font-variant-numeric: tabular-nums; }
.wrow { display: grid; grid-template-columns: 1fr repeat(3, minmax(0, 1fr)); gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.wrow span:not(:first-child) { text-align: right; }
.wrow.head span { font: 500 0.62rem/1.3 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.wrow.total { font-weight: 600; border-bottom: 0; }
@media (max-width: 1020px) { .wins { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) { .wbar { grid-template-columns: minmax(0, 1fr) 56px; } .wbar .wt { grid-column: 1 / -1; grid-row: 2; } }
.win p.note { font: 400 0.76rem/1.55 var(--mono); color: var(--ink-3); }