/* ==========================================================================
   AlphaBet — paper website (v2: numbered blocks, balanced type, no white plates)
   ========================================================================== */
:root {
  color-scheme: only light;
  --paper: #f6f4ed;
  --paper-light: #fcfbf7;
  --paper-2: #f2ede2;
  --paper-3: #e8e1d2;
  --ink: #273b31;
  --ink-2: #464d43;
  --ink-3: #616b5d;
  --stroke-3: #99a394;
  --green: #365e4a;
  --terracotta: #9d593f;
  --rule: #e0dacc;
  --rule-strong: #cbc2ae;
  --grid: rgba(70, 58, 30, .09);
  --blue: #2C62B8;
  --blue-deep: #234F9F;
  --blue-tint: #E2EEFC;
  --blue-wash: #EAF0F9;
  --blue-soft: #8FB0DE;
  --base: #8B8E96;
  --base-light: #C4C6CC;
  --ref: #A9ACB3;
  --locked: #e0dacc;
  --resolve: #C9702A;
  --resolve-tint: #F8E9D8;
  --train: #BE3F34;
  --train-fill: #CF4A3E;
  --train-tint: #F7E1DC;
  --gold: #E3A526;         /* the teaser's AlphaBet: score star */
  --gold-edge: #825913;    /* its outline */
  --gold-muted: #B38D48;   /* the GLM-4.5-Air → AlphaBet arrow */
  --gold-deep: #8E6A18;    /* the in-chart gains */
  --gold-soft: #D1BB92;    /* phone dot plot: AlphaBet's CI */
  --gold-tint: #F3E9D1;    /* phone dot plot: AlphaBet's row */
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "TeX Gyre Pagella", P052, "URW Palladio L", Georgia, serif;
  --sans: "Helvetica Neue", Helvetica, Arial, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "SFMono-Regular", ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --fs-body: 1.1875rem;    /* 19px, as the reference */
  --fs-dek: 1.1875rem;     /* 19px */
  --fs-caption: .9375rem;  /* 15px */
  --fs-small: .875rem;     /* 14px */
  --fs-label: .8125rem;    /* 13px */
  --container: 1240px;
  --measure: 720px;
  --gutter: clamp(20px, 4vw, 48px);
  --block-pad: clamp(2.75rem, 3.5vw + .5rem, 4.25rem);
  --r-ctl: 6px; --r-panel: 12px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --panel: var(--paper-2);
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 94px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: var(--fs-body); line-height: 1.65; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: underline; text-decoration-color: rgba(39, 59, 49, .3); text-decoration-thickness: 1px; text-underline-offset: .18em; transition: text-decoration-color .15s; }
a:hover { text-decoration-color: var(--ink); }
::selection { background: #dfcabd; color: var(--ink); }
:focus-visible { outline: 2px solid var(--terracotta); outline-offset: 4px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.num, .tabular { font-variant-numeric: lining-nums tabular-nums; }
sup, sub { line-height: 0; font-size: .7em; }
p { margin: 0 0 1.1rem; } p:last-child { margin-bottom: 0; }
code, pre, .mono { font-family: var(--mono); font-size: .88em; }
svg text { user-select: none; }

/* ---------- layout ---------- */
.container { width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto; }
.block { padding: var(--block-pad) 0; }
.block--tint { background: var(--paper-2); --panel: #ebe5d6; }
.block--tint .panel--chart { --ink-3: #5d6759; }
/* section edges are colour steps; a hairline only between two plain paper blocks */
.block:not(.block--tint):not(.block--dark) + .block:not(.block--tint):not(.block--dark) { border-top: 1px solid var(--rule); }
.block__head { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 2rem clamp(2.5rem, 5vw, 5rem); align-items: center; margin-bottom: 1.6rem; }
.block__head--single { grid-template-columns: minmax(0, 1fr); }
.eyebrow { display: flex; align-items: baseline; gap: .9rem; font-family: var(--sans); font-size: var(--fs-label); font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 1.25rem; }
.eyebrow .no { font-family: var(--mono); font-weight: 500; color: var(--terracotta); letter-spacing: .3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; text-wrap: balance; }
h2 { font-size: clamp(2.1rem, 1.55rem + 1.5vw, 2.9rem); line-height: 1.1; letter-spacing: -0.02em; }
h1 em, h2 em { font-style: italic; font-weight: 400; color: var(--green); }
h3 { font-size: clamp(1.45rem, 1.2rem + .7vw, 1.75rem); line-height: 1.2; letter-spacing: -0.012em; }
.dek { font-family: var(--sans); font-size: var(--fs-dek); line-height: 1.55; color: var(--ink-2); margin: 0; }
.dek strong, .body strong { font-weight: 600; color: var(--ink); }
.body { max-width: var(--measure); }
.note { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); line-height: 1.55; }
/* wraps: no one-word last lines in running text; each half of a two-part headline balances on its own */
p, .dek, .mem__text, .swap__who, .swap__metric, .stat__label, .boot__lbl { text-wrap: pretty; }
.eyebrow, .prop__eyebrow, .prop__defs dd { text-wrap: balance; }
h1 br + em, h2 br + em { display: block; }
/* line length where layouts go single-column */
.dek, .mem__text, .take__item p { max-width: 68ch; }
@media (max-width: 1023px) { .ev--wide .ev__head p { max-width: 68ch; } }

/* figures */
body { counter-reset: fig; }
figure { margin: 0; }
figure.fig { counter-increment: fig; }
figcaption { font-family: var(--sans); font-size: var(--fs-caption); line-height: 1.5; color: var(--ink-2); margin-top: 1rem; max-width: var(--measure); }
figure.fig > figcaption::before { content: "Figure " counter(fig) ". "; font-weight: 600; color: var(--ink); }
.fig-tag { position: absolute; top: 14px; right: 16px; font-family: var(--sans); font-size: 12px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.panel { position: relative; background: var(--panel); border-radius: var(--r-panel); padding: clamp(16px, 2.2vw, 28px); }
.panel--chart { padding: clamp(14px, 1.6vw, 20px) clamp(14px, 1.6vw, 22px); }
.panel--flush { padding: 0; background: transparent; }
.frame { position: relative; background: var(--panel); border-radius: var(--r-panel); padding: clamp(12px, 2vw, 20px); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: .5em; font-family: var(--sans); font-size: 15px; font-weight: 500; line-height: 1; padding: .7em 1em; border-radius: 999px; border: 1px solid var(--rule-strong); color: var(--ink); background: transparent; text-decoration: none; transition: background .15s, border-color .15s; white-space: nowrap; }
.btn:hover { background: var(--paper-2); border-color: var(--ink-3); }
.btn--primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--primary:hover { background: #3b5544; border-color: #3b5544; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn--primary svg[fill="currentColor"], .btn--primary svg[stroke="currentColor"] { color: var(--paper); }
.btn .arrow { opacity: .65; font-size: .9em; }

/* segmented control */
.seg { display: inline-flex; gap: 2px; padding: 3px; background: rgba(70, 58, 30, .07); border-radius: calc(var(--r-ctl) + 3px); font-family: var(--sans); }
.seg__btn { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 1px; padding: .5em .9em; border-radius: var(--r-ctl); font-size: var(--fs-small); font-weight: 500; color: var(--ink-2); line-height: 1.25; transition: background .18s, color .18s; text-align: left; }
.seg__btn:hover { color: var(--ink); }
.seg__btn[aria-pressed="true"] { background: var(--paper-light); color: var(--ink); box-shadow: 0 0 0 1px var(--rule); }
.block--tint .seg__btn[aria-pressed="true"] { background: var(--paper); }
.seg__sub { font-size: 12px; font-weight: 400; color: var(--ink-3); }
.seg--stack { flex-wrap: wrap; }

/* tooltip */
.tip { position: absolute; z-index: 5; pointer-events: none; background: var(--paper-light); border: 1px solid var(--rule-strong); border-radius: 8px; padding: 9px 11px; font-family: var(--sans); font-size: 13.5px; line-height: 1.4; color: var(--ink); min-width: 220px; }
.tip__name { font-weight: 600; margin-bottom: 4px; }
.tip__row { display: grid; grid-template-columns: 1fr auto auto; gap: 0 10px; font-variant-numeric: tabular-nums; }
.tip__row span { color: var(--ink-2); } .tip__row b { font-weight: 600; } .tip__row i { font-style: normal; color: var(--ink-3); font-size: 12.5px; }
.tip__note { margin-top: 5px; color: var(--ink-3); font-size: 12px; }

/* shared chart text */
.grid { stroke: var(--grid); stroke-width: 1; }
.axis { stroke: var(--rule-strong); stroke-width: 1; }
.tick { font-family: var(--sans); fill: var(--ink-3); font-size: 14px; font-variant-numeric: tabular-nums; }
.axis-title { font-family: var(--sans); fill: var(--ink-2); font-size: 15px; font-weight: 500; }
.legend { font-family: var(--sans); fill: var(--ink-2); font-size: 15px; }

/* accordion */
.acc { margin-top: 1.6rem; }
.acc details { border: 1px solid var(--rule-strong); border-radius: var(--r-panel); background: transparent; transition: border-color .15s, background-color .15s; }
.acc details:has(> summary:hover) { border-color: var(--ink-3); }
.acc details:not([open]):hover { background: var(--paper-2); }
.acc summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: .65rem; padding: .8rem 1.1rem; font-family: var(--sans); font-size: 1rem; font-weight: 500; color: var(--ink); }
.acc summary::-webkit-details-marker { display: none; }
.acc summary:focus-visible { outline: 2px solid var(--terracotta); outline-offset: -2px; border-radius: var(--r-panel); }
/* plus-in-a-circle that turns into a minus when open */
.acc__plus { position: relative; flex: none; width: 18px; height: 18px; border: 1.5px solid var(--ink); border-radius: 50%; }
.acc__plus::before, .acc__plus::after { content: ""; position: absolute; left: 50%; top: 50%; width: 8px; height: 1.5px; background: var(--ink); transform: translate(-50%, -50%); transition: transform .3s var(--ease); }
.acc__plus::after { transform: translate(-50%, -50%) rotate(90deg); }
.acc details[open] .acc__plus::after { transform: translate(-50%, -50%) rotate(0deg); }
.acc__body { padding: 0 1.1rem 1.25rem; border-top: 1px solid var(--rule); font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); }
/* the disclosure eases open where the browser can animate to auto height; elsewhere it toggles instantly */
@supports (interpolate-size: allow-keywords) {
  .acc details { interpolate-size: allow-keywords; }
  .acc details::details-content { block-size: 0; overflow: clip; transition: block-size .3s var(--ease), content-visibility .3s allow-discrete; }
  .acc details[open]::details-content { block-size: auto; }
}
@media (prefers-reduced-motion: reduce) { .acc details::details-content { transition: none; } }

/* ---------- header + hero (reference layout) ---------- */
.site-header { position: sticky; top: 0; z-index: 20; background: var(--paper); }
/* once scrolled, the hairline runs edge to edge so the bar never reads as a cut-out over the tinted bands */
.site-header::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--rule); opacity: 0; transition: opacity .2s; pointer-events: none; }
.site-header.is-scrolled::after { opacity: 1; }
.header-inner { width: min(100% - 2 * var(--gutter), var(--container)); min-height: 94px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line, var(--rule)); }
.wordmark { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; font: 28px/1.1 var(--serif); letter-spacing: -.8px; text-decoration: none; }
.brand-mark { flex-shrink: 0; }
.accent-period { color: var(--terracotta); }
.main-nav { display: flex; align-items: center; gap: 28px; font-size: 16px; }
.main-nav a { position: relative; display: inline-flex; align-items: baseline; gap: 7px; padding-block: 12px; white-space: nowrap; text-decoration: none; color: var(--ink-2); transition: color .15s; }
.main-nav a .no { font-family: var(--mono); font-size: 12.5px; color: var(--terracotta); letter-spacing: .3px; }
.main-nav a:hover, .main-nav a.is-active { color: var(--ink); }
.main-nav a::after { content: ''; position: absolute; left: 0; right: 0; bottom: 8px; height: 1px; background: var(--ink); opacity: 0; transition: opacity .2s; pointer-events: none; }
.main-nav a.is-active::after { opacity: 1; }
.hero { padding-top: 66px; padding-bottom: 0; }
.hero > .eyebrow { display: flex; align-items: center; gap: 11px; margin: 0; font-size: 14px; font-weight: 500; letter-spacing: 1.45px; text-transform: uppercase; line-height: 1.6; color: var(--ink); }
.asterisk { color: var(--terracotta); font-size: 26px; line-height: 1; }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); align-items: end; gap: 70px; margin-top: 28px; }
h1 { font: 76px/1.08 var(--serif); letter-spacing: -2.9px; margin: 0; }
.hero-intro { max-width: 470px; padding-bottom: 4px; }
.hero-intro > p { font-size: 19px; color: var(--ink-2); margin: 0; }
.hero-intro .links { margin-top: 28px; gap: 8px; }
.hero-intro { max-width: 560px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 48px; padding: 11px 14px; border: 1px solid var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.5; color: var(--ink); background: transparent; text-decoration: none; transition: background .18s ease; white-space: nowrap; }
.button > span { transition: transform .18s ease; }
.button:hover > span { transform: translate(2px, -2px); }
.button:hover { background: var(--paper-2); }
.button-dark { background: var(--ink); color: var(--paper); }
.button-dark:hover { background: #3b5544; }
.button-soon { color: var(--ink-3); border-style: dashed; border-color: var(--rule-strong); cursor: default; justify-content: flex-start; gap: 6px; }
.button-soon:hover { background: transparent; }
.links { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-record { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 48px; padding-block: 25px; border-block: 1px solid var(--rule); }
.hero-record > p { font-size: 18px; margin: 0; }
.hero-record > span { flex-shrink: 0; color: var(--ink-3); font-size: 16px; }
.hero-record .separator { margin: 0 .35em; }
@media (max-width: 1100px) { .hero-layout { gap: 42px; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); } h1 { font-size: 64px; letter-spacing: -2.2px; } .hero-record { align-items: flex-start; } .hero-record > p { max-width: 590px; } }
@media (max-width: 900px) { .hero { padding-top: 51px; } .hero-layout { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 34px; } h1 { font-size: 55px; letter-spacing: -1.9px; } .hero-record { flex-direction: column; gap: 12px; margin-top: 36px; } }
@media (min-width: 641px) and (max-width: 760px) { .main-nav { gap: 18px; } .header-inner { gap: 16px; } }
@media (max-width: 640px) { html { scroll-padding-top: 86px; } .header-inner { min-height: 86px; gap: 16px; } .wordmark { font-size: 25px; gap: 7px; } .main-nav { gap: 18px; } .main-nav a.hide-sm { display: none; } .hero { padding-top: 42px; } .hero > .eyebrow { gap: 10px; letter-spacing: .9px; align-items: flex-start; } .asterisk { margin-top: 1px; } .hero-layout { grid-template-columns: minmax(0, 1fr); gap: 27px; margin-top: 23px; } h1 { font-size: clamp(42px, 9.2vw, 58px); line-height: 1.1; letter-spacing: -1.7px; } .hero-intro { max-width: 500px; padding: 0; } .hero-intro > p { font-size: 18px; } .hero-record { margin-top: 32px; padding-block: 22px; gap: 14px; } .hero-record > p { font-size: 18px; line-height: 1.5; } }
@media (max-width: 360px) { html { scroll-padding-top: 80px; } .header-inner { gap: 10px; min-height: 80px; } .wordmark { font-size: 23px; gap: 5px; } .main-nav { gap: 14px; } h1 { font-size: min(42px, 11.4vw); letter-spacing: -.039em; } }
/* the hero keeps a two-line headline and one row of pills at every width (2 + 2 on phones) */
.hero-record > p { text-wrap: balance; }
@media (min-width: 1012px) and (max-width: 1279px) {
  .hero-layout { grid-template-columns: max-content minmax(0, 484px); justify-content: space-between; column-gap: 48px; }
  h1 { font-size: clamp(64px, 6.3vw, 76px); letter-spacing: -.038em; }
}
@media (min-width: 1012px) and (max-width: 1140px) {
  .hero-intro .links { gap: 6px; }
  .hero-intro .links .btn { font-size: 14px; padding: .66em .82em; gap: .42em; }
  .hero-intro .links .btn svg { width: 15px; height: 15px; }
}
@media (min-width: 641px) and (max-width: 1011px) {
  .hero-layout { grid-template-columns: minmax(0, 1fr); gap: 26px; margin-top: 24px; }
  .hero-intro { max-width: 560px; padding: 0; }
  h1 { font-size: 64px; letter-spacing: -2.2px; }
}
@media (max-width: 524px) { .hero-intro .links { max-width: 300px; } }
/* landscape phones: the header scrolls away instead of taking a quarter of the screen */
@media (orientation: landscape) and (max-height: 500px) { .site-header { position: relative; } html { scroll-padding-top: 0; } }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 2.5rem); margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--rule); text-align: center; }
/* each group sits under its chart: the padding mirrors the SVG plot margins (58 / 30 of 560) so it centres on the plot area */
.stats__group { padding: 0 5.36% 0 10.36%; }
.stats__bench { font-family: var(--sans); font-size: var(--fs-small); font-weight: 600; color: var(--ink); line-height: 1.4; }
.stats__pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem 1.5rem; margin-top: .3rem; }
.stats .stat__num { font-size: clamp(1.4rem, .55rem + 2.1vw, 2.6rem); }
.stat__metric { margin: .3rem 0 0; }
.stat__metric { font-family: var(--sans); font-size: var(--fs-small); font-weight: 500; color: var(--ink-2); line-height: 1.4; }
.stat__num { font-family: var(--serif); font-weight: 400; font-size: clamp(2rem, 1.4rem + 1.6vw, 2.75rem); line-height: 1; letter-spacing: -0.02em; font-variant-numeric: lining-nums proportional-nums; white-space: nowrap; }
/* the serif has no arrow glyph; pin one face so every platform draws the same arrow at mid-figure height */
.stat__num .to { color: var(--ink-3); font-family: "Times New Roman", Times, "Liberation Serif", serif; font-size: .55em; margin: 0 .24em; position: relative; top: -.3em; }
.stat__num .after { color: var(--blue); }
.stat__num small { font-size: .55em; }
.stat__label { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); margin-top: .5rem; line-height: 1.4; }
.stat__label b { font-weight: 600; color: var(--ink); }

/* ---------- results: two panels ---------- */
.compass2 { position: relative; }
.compass2__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 2.5rem); }
/* reserve the panels' height before the script mounts them (two 560×500 panels side by side, or stacked) */
@media (scripting: enabled) and (min-width: 901px) { #compass:empty { padding-top: calc((100% - clamp(1rem, 2.5vw, 2.5rem)) * 250 / 560); } }
@media (scripting: enabled) and (min-width: 609px) and (max-width: 900px) { #compass:empty { padding-top: calc(min(100%, 600px) * 1000 / 560 + 2rem); } }
.cpanel { position: relative; }
.cpanel__svg { width: 100%; height: auto; overflow: visible; }
.cp-title { font-family: var(--sans); font-size: 17px; font-weight: 600; fill: var(--ink); }
.cp-sub { font-family: var(--sans); font-size: 13px; fill: var(--ink-3); }
.cp-delta { font-family: var(--sans); font-size: 15px; font-weight: 600; fill: var(--gold-deep); paint-order: stroke; stroke: var(--paper); stroke-width: 3px; stroke-linejoin: round; }
.pt { cursor: pointer; outline: none; --c: var(--base); }
.pt__hit { fill: transparent; }
.pt__dot { fill: var(--c); stroke: var(--paper); stroke-width: 1.5; }
.pt__star { fill: var(--gold); stroke: var(--gold-edge); stroke-width: 1; stroke-linejoin: round; }
.pt__leader { stroke: var(--c); stroke-width: 1; opacity: .7; }
.pt__ring { fill: var(--paper); stroke: var(--c); stroke-width: 1.6; }
.pt--best .pt__ring { fill: var(--paper); stroke-width: 1.5; }
.pt__logo { color: var(--c); }
.pt__lbl { font-family: var(--sans); font-size: 14px; fill: var(--ink); paint-order: stroke; stroke: var(--paper); stroke-width: 3px; stroke-linejoin: round; }
.pt--best .pt__lbl { fill: var(--c); font-weight: 700; font-size: 16px; }
.pt:focus-visible .pt__dot { stroke: var(--terracotta); stroke-width: 2.5; } .pt:focus-visible .pt__star { stroke: var(--terracotta); stroke-width: 2; }
.pt:hover .pt__ring, .pt:focus-visible .pt__ring, .pt.is-on .pt__ring { stroke-width: 2.4; }
.ci { opacity: 0; transition: opacity .15s; pointer-events: none; }
.ci.is-on { opacity: 1; }
.ci line { stroke: var(--c); stroke-width: 1.4; stroke-linecap: round; }
/* the .82 opacity applies to line and head together, so the last dash does not darken inside the head */
.arrow { fill: none; stroke: var(--gold-muted); opacity: .82; stroke-width: 1.6; stroke-dasharray: 5 4; }
.compass__arrowhead { fill: var(--gold-muted); }
.compass__sweep { }
.legend-row { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); display: flex; align-items: center; flex-wrap: wrap; gap: .4rem 1.25rem; margin-top: .9rem; }
.legend-row__item { display: inline-flex; align-items: center; gap: .45rem; white-space: nowrap; }
.lg { display: inline-block; width: 11px; height: 11px; border-radius: 50%; }
.lg--best { background: var(--blue); } .lg--base { background: var(--base); } .lg--ring { background: var(--paper); border: 1.5px solid var(--ink-2); }
/* dot plot (phones) */
.dp__delta { font-family: var(--sans); font-size: var(--fs-small); color: var(--gold-deep); margin: .5rem 0 .75rem; line-height: 1.5; }
.dp__delta b { font-weight: 600; } .dp__delta span { display: block; color: var(--ink-2); font-size: var(--fs-label); }
.dp__delta:not(:first-child) { margin-top: 1.6rem; }
.dp__axis { display: flex; justify-content: space-between; font-family: var(--sans); font-size: 12px; color: var(--ink-3); margin-bottom: .35rem; }
.dp__row { display: grid; grid-template-columns: 8.25em minmax(0, 1fr) 3.6em; align-items: center; gap: .6rem; padding: .5rem 0; border-top: 1px solid var(--rule); font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); }
.dp__row--best { color: var(--ink); font-weight: 600; background: var(--gold-tint); margin: 0 -.5rem; padding-left: .5rem; padding-right: .5rem; border-radius: 6px; border-top-color: transparent; }
.dp__name { white-space: nowrap; }
.dp__name small { display: block; font-weight: 400; color: var(--ink-3); font-size: 12px; }
.dp__track { position: relative; height: 14px; }
.dp__ci { position: absolute; top: 6px; height: 2px; background: var(--base-light); border-radius: 1px; }
.dp__row--best .dp__ci { background: var(--gold-soft); }
.dp__dot { position: absolute; top: 2px; width: 10px; height: 10px; margin-left: -5px; border-radius: 50%; background: var(--ref); }
.dp__row--base .dp__dot, .dp__row--baseline .dp__dot { background: var(--base); }
.dp__row--best .dp__dot { background: none; width: 16px; height: 16px; top: -1px; margin-left: -8px; border-radius: 0; }
.dp__dot svg { display: block; width: 100%; height: 100%; overflow: visible; }
.dp__dot polygon { fill: var(--gold); stroke: var(--gold-edge); stroke-width: 1; stroke-linejoin: round; }
.dp__v { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- results table ---------- */
.rt-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.rt { width: 100%; border-collapse: collapse; font-family: var(--sans); font-size: .96875rem; line-height: 1.4; min-width: 0; }
.rt th, .rt td { padding: .45rem .6rem; border-bottom: 1px solid var(--rule); vertical-align: top; white-space: nowrap; }
.rt thead th { font-weight: 500; color: var(--ink-2); font-size: var(--fs-small); text-align: center; border-bottom-color: var(--rule-strong); }
/* section rows: off-the-shelf models vs the GLM-4.5-Air block; '+' models are indented under the base */
.rt tbody .rt__section th { padding: .4rem .6rem .3rem; font-size: var(--fs-label); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); text-align: left; background: var(--paper-2); border-bottom: 1px solid var(--rule); }
.rt__section--glm th { border-top: 1px solid var(--rule-strong); }
.rt tbody th.rt__name--indent { padding-left: calc(.6rem + 1.15em); }
.rt thead th.rt__model { text-align: left; vertical-align: bottom; }
.rt thead th.rt__group { border-bottom: 0; background: linear-gradient(var(--rule), var(--rule)) no-repeat center bottom / calc(100% - 1.2rem) 1px; }
.rt tbody th { text-align: left; font-weight: 500; color: var(--ink); white-space: nowrap; }
.rt td { text-align: center; }
.rt__variant { display: inline-block; margin-left: .45em; font-size: 13.5px; color: var(--ink-3); font-weight: 400; }
.rt__v { display: block; } .rt__ci { display: block; font-size: 13px; color: var(--ink-3); margin-top: 0; }
.rt__best { font-weight: 700; } .rt__second { text-decoration: underline; text-decoration-color: var(--ink-3); text-underline-offset: .15em; }
.rt__row--ours { background: var(--blue-tint); }
.rt__row:hover { background: rgba(70, 58, 30, .04); } .rt__row--ours:hover { background: #D6E4F7; }
.rt__foot { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-3); margin: .75rem 0 0; padding-inline: .6rem; line-height: 1.5; }

/* ---------- episode ---------- */
.ep { position: relative; }
.ep__scroller { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.ep__scroller.is-end { -webkit-mask-image: none; mask-image: none; }
.ep__svg { width: 100%; height: auto; overflow: visible; }
.ep__ctl { display: grid; grid-template-columns: 1fr auto; align-items: start; gap: 1rem; margin-top: 0; padding-right: 2%; font-family: var(--sans); }   /* 2% = the loop gutter right of the drawing (24 of 1200) */
.ep__scrub { display: grid; gap: .25rem; }
/* hairline track, ink up to the thumb (--f is the position, 0–1, set by episode.js); the thumb stays 16px wide,
   the width the stop-label positions assume. One vendor pseudo-element per rule: an unknown one voids its rule. */
.ep__range { -webkit-appearance: none; appearance: none; width: 100%; height: 26px; margin: 0; background: transparent; cursor: pointer; --f: 0; }
.ep__range:focus-visible { outline: 2px solid transparent; outline-offset: 2px; }
.ep__range::-webkit-slider-runnable-track { height: 2px; border-radius: 1px; background: linear-gradient(90deg, var(--ink) 0 calc(8px + (100% - 16px) * var(--f)), var(--rule-strong) 0); }
.ep__range::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; box-sizing: border-box; width: 16px; height: 16px; margin-top: -7px; border-radius: 50%; background: var(--ink); border: 2px solid var(--paper-2); }
.ep__range:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 2px var(--terracotta); }
.ep__range::-moz-range-track { height: 2px; border-radius: 1px; background: var(--rule-strong); }
.ep__range::-moz-range-progress { height: 2px; border-radius: 1px; background: var(--ink); }
.ep__range::-moz-range-thumb { box-sizing: border-box; width: 16px; height: 16px; border-radius: 50%; background: var(--ink); border: 2px solid var(--paper-2); }
.ep__range:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 2px var(--terracotta); }
@media (forced-colors: active) { .ep__range::-webkit-slider-runnable-track { background: CanvasText; } }
.ep__stops { position: relative; height: 1.45em; font-size: var(--fs-caption); }
.ep__stop { position: absolute; top: 0; font-family: var(--sans); font-size: var(--fs-caption); color: var(--ink-3); white-space: nowrap; padding: .15em 0; border-radius: 4px; line-height: 1.3; }
.ep__stop:hover { color: var(--ink); }
.ep__stop[aria-pressed="true"] { color: var(--ink); font-weight: 600; }
.ep__stop--res[aria-pressed="true"] { color: var(--resolve); }
.ep__stop--train[aria-pressed="true"] { color: var(--train); }
.ep__stop-short { display: none; }
.ep__play { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--rule-strong); display: grid; place-items: center; color: var(--ink-2); background: transparent; margin-top: -2px; transition: background .15s, color .15s, border-color .15s; }
.ep__play:hover { background: var(--paper); color: var(--ink); border-color: var(--ink-3); }
@media (max-width: 413px) { .ep__stops, .ep__stop { font-size: 13px; } }
@media (max-width: 340px) { .ep__stops, .ep__stop { font-size: 12px; } }
/* larger hit areas on touch screens, without moving anything */
@media (pointer: coarse) {
  .ep__stop::after { content: ''; position: absolute; inset: -10px -3px; }
  .ep__play { position: relative; }
  .ep__play::after { content: ''; position: absolute; inset: -7px; border-radius: 50%; }
}
/* header */
.ep__qbox { fill: var(--paper); stroke: var(--rule-strong); stroke-width: 1; }
.ep__q { font-family: var(--serif); font-size: 24px; fill: var(--ink); }
.ep__qmeta { font-family: var(--sans); font-size: 13.5px; fill: var(--ink-3); }
.ep__chip { fill: var(--paper-2); stroke: var(--rule-strong); }
.ep__chiplbl { font-family: var(--sans); font-size: 13.5px; fill: var(--ink-2); }
/* environment band */
.ep__box { fill: var(--paper); stroke: var(--rule-strong); stroke-width: 1; transition: stroke .25s, stroke-width .25s; }
.ep__box.is-hot { stroke: var(--ink); stroke-width: 1.5; }
.ep__boxlbl { font-family: var(--sans); font-size: 15px; font-weight: 600; fill: var(--ink); letter-spacing: .01em; }
.ep__boxsub { font-family: var(--sans); font-size: 13.5px; fill: var(--ink-3); transition: opacity .3s; }
.ep__code { font-family: var(--mono); font-size: 14px; fill: var(--ink-2); }
.ep__icon { overflow: visible; }
.ep__icon--box { color: var(--ink); }
.ep__icon--loop { color: var(--ink-3); }
.ep__icon--flame { color: var(--train); }
.ep__corpushl { fill: var(--blue-wash); }
.ep__doc { transition: fill .3s, stroke .3s, opacity .3s; }
.ep__doc--acc { fill: var(--ink); opacity: .78; stroke: none; }
.ep__doc--future { fill: var(--paper); stroke: var(--rule-strong); stroke-width: 1; }
.ep__doc.is-hit { fill: var(--blue); opacity: 1; }
.ep__bnd { transition: transform .48s var(--ease); }
.ep__boundary { stroke: var(--ink); stroke-width: 1.4; stroke-linecap: round; }
.ep__bndpill { fill: var(--ink); }
.ep__bndlbl { font-family: var(--sans); font-size: 12.5px; font-weight: 600; fill: var(--paper); }
.ep__bndflag { transition: transform .48s var(--ease); }
/* agent loop */
.ep__connG { transition: transform .48s var(--ease), opacity .3s; }
.ep__conn { fill: none; stroke: var(--stroke-3); stroke-width: 1.1; stroke-dasharray: 3 3; transition: opacity .3s, stroke .25s; }
.ep__conn.is-hot { stroke: var(--ink); stroke-width: 1.4; stroke-dasharray: none; }
.ep__conn--elbow { opacity: 0; }
.ep__conn--elbow.is-hot { opacity: 1; }
.ep__connhead { fill: var(--stroke-3); }
.ep__connhead--hot { fill: var(--ink); }
.ep__chips { transition: transform .48s var(--ease), opacity .3s; }
.ep__chips.is-idle { opacity: .45; }
.ep__pill { fill: none; stroke: var(--rule-strong); stroke-dasharray: 4 3; }
.ep__exit { stroke: var(--stroke-3); stroke-width: 1.2; }
.ep__actbox { fill: var(--paper); stroke: var(--rule-strong); transition: fill .2s, stroke .2s; }
.ep__actlbl { font-family: var(--sans); font-size: 12px; fill: var(--ink-3); transition: fill .2s; }
.ep__act.is-done .ep__actbox { stroke: var(--stroke-3); } .ep__act.is-done .ep__actlbl { fill: var(--ink-2); }
.ep__act.is-on .ep__actbox { fill: var(--ink); stroke: var(--ink); } .ep__act.is-on .ep__actlbl { fill: var(--paper); font-weight: 600; }
.ep__agent { transition: transform .48s var(--ease), opacity .3s; }
.ep__agent.is-idle { opacity: .45; }
.is-training .ep__agent.is-idle { opacity: 1; }
.ep__agentbody { fill: var(--ink); transition: fill .4s; }
.is-training .ep__agentbody { fill: var(--train-fill); }
.is-training .ep__agentlbl { fill: var(--train); }
.ep__agenteye { fill: var(--paper); }
.ep__agentlbl { font-family: var(--sans); font-size: 12.5px; font-weight: 600; fill: var(--ink); }
/* time axis + forecasts */
.ep__axis { stroke: var(--rule-strong); stroke-width: 1.2; }
.ep__axishead { fill: var(--rule-strong); }
.ep__node { fill: var(--paper); stroke: var(--base-light); stroke-width: 1.5; transition: fill .3s, stroke .3s; }
.ep__step.is-on .ep__node { fill: var(--ink); stroke: var(--ink); }
.ep__resnode { fill: var(--paper); stroke: var(--resolve); stroke-width: 1.5; transition: fill .3s; }
.is-resolved .ep__resnode { fill: var(--resolve); }
.ep__date { font-family: var(--sans); font-size: 13px; fill: var(--ink-3); }
.ep__date--res { fill: var(--resolve); font-weight: 600; }
.ep__baseline { stroke: var(--rule-strong); stroke-width: 1; opacity: 0; transition: opacity .3s; }
.ep__step.is-on .ep__baseline { opacity: 1; }
.ep__bar { fill: var(--base); transition: fill .3s; }
.ep__step.is-cur .ep__bar { fill: var(--ink-2); }
.is-resolved .ep__bar--realized { fill: var(--resolve); }
.ep__p { font-family: var(--sans); font-size: 12px; fill: var(--ink-2); font-variant-numeric: tabular-nums; }
.ep__o { font-family: var(--sans); font-size: 12px; fill: var(--ink-3); opacity: 0; transition: opacity .3s; }
.ep__step.is-on .ep__o { opacity: 1; }
/* outcome card, scoring, training */
.ep__cardbox { fill: var(--paper); stroke: var(--base-light); stroke-width: 1.2; stroke-dasharray: 4 3; transition: fill .4s, stroke .4s; }
.is-resolved .ep__cardbox { fill: var(--resolve-tint); stroke: var(--resolve); stroke-dasharray: none; }
.ep__cardlbl { font-family: var(--sans); font-size: 11px; fill: var(--ink-3); letter-spacing: .08em; text-transform: uppercase; }
.ep__cardq { font-family: var(--serif); font-size: 34px; fill: var(--base-light); transition: opacity .3s; }
.is-resolved .ep__cardq { opacity: 0; }
.ep__cardval { font-family: var(--serif); font-size: 21px; font-weight: 500; fill: var(--resolve); opacity: 0; transition: opacity .4s; }
.is-resolved .ep__cardval { opacity: 1; }
.ep__cardstate { font-family: var(--sans); font-size: 12px; fill: var(--ink-3); }
.is-resolved .ep__cardstate { fill: var(--resolve); }
.ep__score { opacity: 0; transition: opacity .4s; }
.is-resolved .ep__score { opacity: 1; }
.ep__scoreline { fill: none; stroke: var(--resolve); stroke-width: 1; stroke-dasharray: 3 3; }
.ep__stamp { font-family: var(--mono); font-size: 13px; font-weight: 500; fill: var(--resolve); }
.ep__railbox { fill: var(--paper-3); transition: fill .4s; }
.is-training .ep__railbox { fill: var(--train-tint); }
.ep__raillbl { font-family: var(--sans); font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; fill: var(--ink-3); transition: fill .4s; }
.ep__raillblg .ep__icon--flame { color: var(--ink-3); transition: color .4s; }
.is-training .ep__raillbl, .is-training .ep__raillblg .ep__icon--flame { fill: var(--train); color: var(--train); }
.ep__railtext { font-family: var(--sans); font-size: 13px; fill: var(--ink-3); transition: fill .4s; }
.is-training .ep__railtext { fill: var(--ink-2); }
.ep__feeds, .ep__loop { opacity: 0; transition: opacity .4s; }
.is-training .ep__feeds, .is-training .ep__loop { opacity: 1; }
.ep__feed { stroke: var(--train); stroke-width: 1.2; fill: none; }
.ep__loopline { fill: none; stroke: var(--train); stroke-width: 1.4; }
.ep__trainhead { fill: var(--train); }
.ep__looplbl { font-family: var(--sans); font-size: 12px; font-weight: 600; fill: var(--train); }

/* ---------- idea: bootstrap + memory ---------- */
.idea__row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 2rem clamp(2.5rem, 5vw, 5rem); align-items: start; margin-top: 1.1rem; padding-top: 1.75rem; border-top: 1px solid var(--rule); }
#idea { padding-bottom: 2.5rem; }
.boot__num { font-family: var(--serif); font-weight: 400; font-size: clamp(2.6rem, 1.8rem + 2.6vw, 4rem); line-height: 1; letter-spacing: -0.02em; font-variant-numeric: lining-nums proportional-nums; white-space: nowrap; }
.boot__num .to { color: var(--ink-3); font-family: "Times New Roman", Times, "Liberation Serif", serif; font-size: .55em; margin: 0 .24em; position: relative; top: -.3em; }
.boot__num .after { color: var(--blue); }
.boot__lbl { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-3); margin-top: .6rem; letter-spacing: .01em; }
.boot__lbl b { font-weight: 600; color: var(--ink-2); }
.boot__text { margin-top: .9rem; max-width: 30em; }
.mem { display: grid; gap: 1.25rem; }
.mem__item { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 1.25rem; align-items: start; }
.mem__item svg { width: 150px; height: 44px; overflow: visible; }
.mem__name { font-family: var(--serif); font-size: 1.3rem; font-weight: 400; color: var(--ink); display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; }
.mem__text { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); line-height: 1.55; margin-top: .3rem; }
.vt-line { stroke: var(--rule-strong); }
.vt-dot { fill: var(--paper); stroke: var(--base-light); stroke-width: 1.5; }
.vt-dot--on { fill: var(--blue); stroke: var(--blue); }
.vt-arrow { fill: none; stroke: var(--ink-3); stroke-dasharray: 3 3; }
.vt-lbl { font-family: var(--sans); font-size: 11px; fill: var(--ink-3); }

/* ---------- propositions ---------- */
.props { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.25rem, 2.5vw, 2.5rem); align-items: stretch; }
/* rows line up across the two cards; the shorter card's slack sits evenly around its display equation */
.prop { background: var(--panel); border-radius: var(--r-panel); padding: clamp(1.5rem, 2.5vw, 2.5rem); display: flex; flex-direction: column; justify-content: flex-start; gap: 1.1rem; }
.prop__eyebrow { font-family: var(--sans); font-size: var(--fs-label); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); margin: 0; }
.prop__eyebrow b { font-weight: 700; }
.prop h3 { font-size: clamp(1.15rem, 1.02rem + .45vw, 1.4rem); line-height: 1.35; text-wrap: pretty; }
.prop__math { font-family: var(--serif); overflow-x: auto; padding: .25rem 0; margin-block: auto; container-type: inline-size; }
.prop__math .katex { font-size: 1.08em; }
/* Proposition 1's display formula (about 21.4em wide) shrinks to its box instead of scrolling */
.props > .prop:first-child .prop__math .katex { font-size: min(1.08em, 100cqi / 21.6); }
.prop__defs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem 1rem; margin: 0; }
.prop__defs div { border-top: 1px solid var(--rule); padding-top: .6rem; }
.prop__defs dt { font-family: var(--serif); font-size: 1.25rem; color: var(--ink); line-height: 1.1; }
.prop__defs dt i { font-style: italic; }
.prop__defs dt sup { font-size: .62em; }
.prop__defs dd { margin: .3rem 0 0; font-family: var(--sans); font-size: var(--fs-small); line-height: 1.45; color: var(--ink-2); }
.prop__take { font-family: var(--sans); font-size: var(--fs-caption); line-height: 1.55; color: var(--ink-2); margin: 0; text-wrap: balance; }
.prop__take b, .prop__col b { font-weight: 400; color: var(--ink); font-family: var(--serif); font-style: italic; font-size: 1.12em; white-space: nowrap; line-height: 1; }
.prop__cmp { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.prop__col { border-top: 1px solid var(--rule); padding-top: .6rem; font-family: var(--sans); font-size: var(--fs-small); line-height: 1.5; color: var(--ink-2); }
.prop__col p { margin: 0; text-wrap: pretty; }
.prop__colhead { font-size: var(--fs-label); font-weight: 600; letter-spacing: .02em; color: var(--ink); margin: 0 0 .3rem !important; }
.prop__col--ours .prop__colhead { color: var(--blue-deep); }
.h2--line em { color: var(--ink); font-style: normal; }
@media (min-width: 1024px) { .h2--line { font-size: min(clamp(2.1rem, 1.55rem + 1.5vw, 2.9rem), 3.6vw); } }
.prop__colmath { font-family: var(--serif); font-size: 1.05rem; color: var(--ink); margin: 0 0 .4rem !important; }
.prop__colmath .katex { font-size: 1.05em; }
.prop__fig { margin-top: 0; padding-top: .75rem; border-top: 1px solid var(--rule); }
.prop__fig + .prop__take { margin-top: -.3rem; }
.prop__fig svg { width: 100%; max-width: 560px; height: auto; overflow: visible; display: block; margin: 0 auto; }
.g-line { stroke: var(--rule-strong); } .g-dot { fill: var(--ink); } .g-dot--ring { fill: var(--panel); stroke: var(--ink); stroke-width: 1.5; } .g-dot--p { fill: var(--blue); }
.g-name { font-family: var(--serif); font-style: italic; font-size: 17px; fill: var(--ink); }
.g-sup { font-style: italic; }
.g-sub { font-family: var(--sans); font-size: 12.5px; fill: var(--ink-2); }
.g-brace { fill: none; stroke: var(--stroke-3); stroke-width: 1; }
.g-gap { font-family: var(--sans); font-size: 13px; font-weight: 600; fill: var(--ink); }
.g-gap--p { fill: var(--blue-deep); }
.g-gloss { font-weight: 400; font-size: 12px; fill: var(--ink-3); }
.tb-q { fill: var(--base-light); } .tb-t { fill: var(--ink-2); } .tb-ours { fill: var(--blue); }
.tb-lbl { font-family: var(--sans); font-size: 12.5px; fill: var(--ink); font-weight: 600; } .tb-sub { font-family: var(--sans); font-size: 12px; fill: var(--ink-3); }
.tb-sym { font-family: var(--serif); font-style: italic; font-size: 1.15em; fill: var(--ink-2); }
.tb-key text { font-family: var(--sans); font-size: 11.5px; fill: var(--ink-3); } .tb-key .tb-sym { font-size: 1.1em; }

/* ---------- evidence sub-blocks ---------- */
.ev { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr); gap: 1rem clamp(2rem, 4vw, 3.5rem); align-items: center; padding-top: 1.6rem; margin-top: 1.6rem; border-top: 1px solid var(--rule); }
#analysis { padding-bottom: 2.5rem; }
.block__head + .ev { margin-top: 0; border-top: 0; padding-top: 0; }
.ev h3 { font-size: clamp(1.25rem, 1.05rem + .6vw, 1.6rem); line-height: 1.3; text-wrap: pretty; }
.ev__text p { font-size: 1rem; line-height: 1.55; color: var(--ink-2); margin-top: .8rem; max-width: 30em; }
.ev__stat { margin-top: 1.1rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
.ev__stat .stat__num { font-size: clamp(2rem, 1.5rem + 1.3vw, 2.6rem); }
.ev--wide { grid-template-columns: minmax(0, 1fr); }
.ev--wide .ev__head { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr); gap: 1rem clamp(2rem, 4vw, 3.5rem); align-items: center; margin-bottom: .25rem; }
.ev--wide .ev__head p { font-size: 1rem; line-height: 1.55; color: var(--ink-2); margin: 0; }
.ev__second { margin-top: -.25rem; }

/* horizon */
.horizon { position: relative; }
.horizon__svg { width: 100%; height: auto; overflow: visible; }
.horizon { --band: #dfe6f0; }
.horizon__band { fill: var(--band); }
.horizon__line { fill: none; stroke-width: 1.75; stroke-linejoin: round; }
.horizon__line--base { stroke: var(--base); }
.horizon__line--single { stroke: var(--blue); stroke-dasharray: 5 4; stroke-width: 1.5; }
.horizon__line--free { stroke: var(--blue); stroke-width: 2.25; }
.horizon__dot { stroke: var(--halo, var(--panel)); stroke-width: 2; }
.horizon__dot--base { fill: var(--base); }
.horizon__dot--single { fill: var(--halo, var(--panel)); stroke: var(--blue); stroke-width: 2; }
.horizon__legend .horizon__dot--base, .horizon__legend .horizon__dot--free { stroke: none; }
.horizon__dot--free { fill: var(--blue); }
.horizon__hit { fill: transparent; }
.horizon__col { cursor: pointer; outline: none; --halo: var(--panel); }
.horizon__col:hover, .horizon__col.is-on, .horizon__col:focus-visible { --halo: #e4ddce; }
.horizon__col:hover .horizon__hit, .horizon__col.is-on .horizon__hit { fill: rgba(70, 58, 30, .045); }
.horizon__col:focus-visible .horizon__hit { stroke: var(--terracotta); stroke-width: 1.5px; fill: rgba(70, 58, 30, .045); }
.horizon__ci { stroke-width: 1.25; opacity: 0; transition: opacity .15s; stroke-linecap: round; }
.horizon__ci--base { stroke: var(--base); } .horizon__ci--single, .horizon__ci--free { stroke: var(--blue); }
.horizon__col.is-on .horizon__ci { opacity: .9; }
.horizon__val { font-family: var(--sans); font-size: 14px; fill: var(--ink-2); paint-order: stroke; stroke: var(--halo, var(--panel)); stroke-width: 3px; }
.horizon__val--free { fill: var(--blue-deep); font-weight: 600; }
/* the one value label that sits inside the gain band keeps a band-coloured halo */
.horizon__val--inband { stroke: var(--band); }
.horizon__col:hover .horizon__val--inband, .horizon__col.is-on .horizon__val--inband, .horizon__col:focus-visible .horizon__val--inband { stroke: #d8dee7; }
.horizon .tip { width: max-content; }
.horizon__gain { font-family: var(--sans); font-size: 15px; font-weight: 600; fill: var(--blue-deep); }
.horizon__gainlbl { font-family: var(--sans); font-size: 13.5px; fill: var(--ink-3); }
.horizon__xlbl { font-family: var(--sans); font-size: 15px; fill: var(--ink); font-weight: 500; }
.horizon__n { font-family: var(--sans); font-size: 13.5px; fill: var(--ink-3); }
.horizon__settle { stroke: var(--resolve); stroke-width: 1.5; }
.horizon__settlelbl { font-family: var(--sans); font-size: 13.5px; fill: var(--resolve); font-weight: 500; }

/* swap */
.swap__grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: clamp(1.25rem, 3vw, 2.5rem); align-items: start; }
.swap__table { width: 100%; border-collapse: collapse; table-layout: fixed; font-family: var(--sans); font-size: 15px; }
.swap__table th, .swap__table td { padding: .5rem .45rem; text-align: center; border-bottom: 1px solid var(--rule-strong); }
.swap__table thead th { font-size: var(--fs-small); font-weight: 600; color: var(--ink-2); }
.swap__table thead th.swap__axis { text-align: left; font-weight: 500; color: var(--ink-3); }
.swap__table thead tr:first-child th { border-bottom: 0; padding-bottom: .15rem; }
.swap__table tbody th { text-align: left; color: var(--ink); font-weight: 500; white-space: nowrap; }
.swap__table tbody th small { color: var(--ink-3); font-weight: 400; margin-left: .35em; font-size: .86em; }
.swap__table tfoot th { text-align: left; color: var(--ink-2); font-weight: 500; border-bottom: 0; } .swap__table tfoot td { border-bottom: 0; color: var(--ink-2); font-weight: 500; }
.swap__delta-col { color: var(--ink-2); font-weight: 500; }
.swap__cell { font-family: var(--sans); font-variant-numeric: tabular-nums; padding: .32rem .55rem; border-radius: 6px; border: 1px solid transparent; transition: background .15s, border-color .15s; min-width: 4.4em; font-size: 15px; color: var(--ink-2); }
.swap__cell:hover { background: var(--paper); border-color: var(--rule-strong); color: var(--ink); }
.swap__cell.is-active { background: var(--paper); border-color: var(--ink); color: var(--ink); font-weight: 600; }
.swap__readout { align-self: stretch; padding-top: .5rem; border-left: 1px solid var(--rule-strong); padding-left: clamp(1rem, 2.5vw, 2rem); }
.swap__metric { font-family: var(--sans); font-size: var(--fs-label); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.swap__who { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); margin-top: .35rem; line-height: 1.45; }
.swap__who b { font-weight: 600; color: var(--ink); }
.swap__big { font-family: var(--serif); font-weight: 400; font-size: clamp(2.8rem, 2rem + 2.2vw, 3.9rem); line-height: 1; letter-spacing: -0.02em; margin-top: .4rem; }
.swap__ci { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-3); margin-top: .3rem; }
.swap__deltas { margin-top: 1rem; display: grid; gap: .5rem; }
.swap__delta { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: .25rem .75rem; text-align: left; font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); padding: .55rem .75rem; padding-right: 1.15rem; border-radius: 8px; background: var(--paper); border: 1px solid transparent; transition: border-color .15s; }
.swap__delta:hover:not(:disabled) { border-color: var(--rule-strong); }
.swap__delta:disabled { cursor: default; color: var(--ink-3); }
.swap__dk { font-weight: 600; color: var(--ink); }
.swap__dk small { display: block; font-weight: 400; color: var(--ink-3); font-size: 12.5px; margin-top: .1rem; }
.swap__delta b { font-size: 1.2rem; font-weight: 600; color: var(--blue); font-variant-numeric: tabular-nums; justify-self: end; }
.swap__delta b sup { font-size: .62em; color: var(--ink-3); font-weight: 400; margin-left: .1em; vertical-align: baseline; position: relative; top: -.28em; }
.swap__delta.is-bad b { color: var(--ink-2); }
.swap__foot { font-family: var(--sans); font-size: var(--fs-label); color: var(--ink-3); margin: .9rem 0 0; padding-left: .45rem; line-height: 1.5; }
/* significance stars: the asterisk is already a raised glyph, so no extra sup shift; they hang right of the number */
.swap sup { vertical-align: baseline; position: relative; top: -.02em; font-size: .8em; letter-spacing: .02em; margin-left: .06em; }
.swap__table td sup, .swap__delta b sup { display: inline-block; width: 0; white-space: nowrap; }

/* grpo curves + diagnostics */
.curves { position: relative; }
.curves__svg { width: 100%; height: auto; overflow: visible; }
.cv-title { font-family: var(--sans); font-size: 16px; font-weight: 600; fill: var(--ink); }
.cv-row { font-family: var(--sans); font-size: 15px; font-weight: 600; fill: var(--ink-2); }
.cv-legend { font-family: var(--sans); font-size: 14px; fill: var(--ink-2); }
.cv-line { fill: none; stroke-width: 1.9; stroke-linejoin: round; }
.cv-line--std { stroke: var(--base); } .cv-line--nostd { stroke: var(--blue); }
.cv-dot--std { fill: var(--panel); stroke: var(--base); stroke-width: 1.6; } .cv-dot--nostd { fill: var(--blue); stroke: var(--panel); stroke-width: 1.3; }
.cv-fill { fill: rgb(70, 58, 30); opacity: .08; }
.cv-end { font-family: var(--sans); font-size: 14px; font-variant-numeric: tabular-nums; }
.cv-end--std { fill: var(--ink-3); } .cv-end--nostd { fill: var(--blue-deep); font-weight: 600; }
.gdiag__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .75rem; margin-bottom: .4rem; }
.gdiag__legend { font-family: var(--sans); font-size: 15px; color: var(--ink-2); display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; }
.gdiag__key { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-left: .6rem; }
.gdiag__key--std { border: 2px solid var(--base); background: var(--panel); } .gdiag__key--nostd { background: var(--blue); }
.gdiag__svg { width: 100%; height: auto; overflow: visible; }
.gdiag .gdiag__svg--narrow { min-width: 0; }
@media (min-width: 1001px) { .gdiag__head { padding-right: calc(44 / 1120 * 100%); } }
.gdiag__track { stroke: var(--grid); stroke-width: 1; } .gdiag__link { stroke: var(--base-light); stroke-width: 2; }
.gdiag__dot { stroke-width: 2; } .gdiag__dot--std { fill: var(--panel); stroke: var(--base); } .gdiag__dot--nostd { fill: var(--blue); stroke: var(--panel); }
.gdiag__label { font-family: var(--sans); font-size: 15.5px; fill: var(--ink); font-weight: 500; }
.gdiag__sub { font-family: var(--sans); font-size: 13.5px; fill: var(--ink-3); }
.gdiag__val { font-family: var(--sans); font-size: 14.5px; fill: var(--ink-2); } .gdiag__val--nostd { fill: var(--blue-deep); font-weight: 600; }
.gdiag__foot { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-3); margin: .5rem 0 0; line-height: 1.5; }

/* ---------- the paper (dark band) ---------- */
.block--dark { background: var(--ink); color: var(--paper); --panel: #203228; --rule: rgba(246, 244, 237, .16); --rule-strong: rgba(246, 244, 237, .3); }
.block--dark .eyebrow, .block--dark .eyebrow .no { color: rgba(247, 246, 241, .62); }
.block--dark .eyebrow .no { font-family: var(--sans); letter-spacing: .1em; }
.block--dark h2, .block--dark h3 { color: var(--paper); }
.paper__grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 2.5rem clamp(2.5rem, 5vw, 6rem); align-items: stretch; }
.paper__cite { display: flex; flex-direction: column; }
.paper__name { font-family: var(--serif); font-size: clamp(2.6rem, 1.8rem + 2.8vw, 4rem); line-height: 1; letter-spacing: -0.025em; margin: 0; }
.paper__title { font-family: var(--serif); font-size: clamp(1.4rem, 1.15rem + .9vw, 1.9rem); line-height: 1.25; margin: 1rem 0 0; color: var(--paper); text-wrap: balance; }
.paper__authors { font-family: var(--sans); font-size: 1.0625rem; line-height: 1.7; margin: 1.75rem 0 0; color: var(--paper); }
.paper__authors sup { color: rgba(247, 246, 241, .6); font-size: .68em; margin-left: 1px; }
.paper__affils { font-family: var(--sans); font-size: var(--fs-small); color: rgba(247, 246, 241, .7); margin: .5rem 0 0; line-height: 1.6; container-type: inline-size; }
/* names and affiliation items never split; a separator is hidden wherever its item starts a new line */
.nobr { white-space: nowrap; }
.paper__affils .aff--corr { display: block; }
.paper__affils .aff-sep--corr { display: none; }
@container (max-width: 580px) { .aff--intern { display: block; } .aff-sep--intern { display: none; } }
@media (max-width: 520px) { .paper__authors br { display: none; } .paper__authors { text-wrap: balance; } }
.paper__links { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.75rem; }
.block--dark .button { color: var(--paper); border-color: var(--paper); }
.block--dark .button:hover { background: rgba(246, 244, 237, .1); }
.block--dark .button-dark { background: var(--paper); color: var(--ink); }
.block--dark .button-dark:hover { background: #ebe5d6; }
.block--dark .button-soon { color: rgba(246, 244, 237, .55); border-style: dashed; border-color: rgba(246, 244, 237, .4); }
.block--dark .button-soon:hover { background: transparent; }
.block--dark .btn { color: var(--paper); border-color: rgba(246, 244, 237, .4); }
.block--dark .btn:hover { background: rgba(246, 244, 237, .1); border-color: rgba(246, 244, 237, .7); }
.block--dark .btn--primary { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.block--dark .btn--primary svg[fill="currentColor"], .block--dark .btn--primary svg[stroke="currentColor"] { color: var(--ink); }
.block--dark .btn--primary:hover { background: #ebe5d6; border-color: #ebe5d6; }
.block--dark .note { color: rgba(247, 246, 241, .72); }
.block--dark a { text-decoration-color: rgba(247, 246, 241, .4); }
.block--dark a:hover { text-decoration-color: var(--paper); }
.block--dark :focus-visible { outline-color: #c9896c; }
.block--dark .cite-wrap pre { background: var(--panel); color: var(--paper-3); }
.block--dark .copy-btn { color: rgba(247, 246, 241, .8); border-color: rgba(246, 244, 237, .3); background: var(--panel); }
.block--dark .copy-btn:hover { color: var(--paper); border-color: rgba(246, 244, 237, .6); }
.paper__cite-label { font-family: var(--sans); font-size: var(--fs-label); font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: rgba(247, 246, 241, .62); margin: 0 0 .75rem; }

/* ---------- conclusion + cite ---------- */
.take { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem clamp(1.5rem, 3vw, 3rem); margin-top: clamp(2rem, 3vw, 2.75rem); }
.take__item { padding-top: 1.25rem; border-top: 1px solid var(--rule-strong); }
.take__item .no { font-family: var(--mono); font-size: var(--fs-label); color: var(--ink-3); display: block; margin-bottom: .75rem; }
.take__item h3 { font-size: 1.45rem; margin-bottom: .6rem; }
.take__item p { font-size: 1.0625rem; color: var(--ink-2); margin: 0; }
.cite-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.5fr); gap: 2rem clamp(2.5rem, 5vw, 5rem); align-items: start; }
.cite-wrap { position: relative; flex: 1; display: flex; container-type: inline-size; }
/* the BibTeX keeps its hand-aligned lines: the type scales with the panel (29.8em = the longest, 48-character line
   in the widest mono of the stack, SF Mono in Safari) */
.cite-wrap pre { flex: 1; margin: 0; background: var(--panel); border-radius: var(--r-panel); padding: 1.5rem 1.6rem; font-family: var(--mono); font-size: clamp(11px, calc((100cqi - 3.2rem) / 29.8), 15px); line-height: 1.75; overflow-x: auto; color: var(--ink); white-space: pre; overflow-wrap: normal; }
@media (min-width: 1024px) and (max-width: 1279px) { .paper__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.copy-btn { position: absolute; top: 12px; right: 12px; width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--rule-strong); display: grid; place-items: center; color: var(--ink-2); background: transparent; transition: color .15s, border-color .15s; }
.copy-btn svg { display: block; }
.copy-btn.is-done { color: var(--paper); border-color: rgba(246, 244, 237, .6); }
/* the page ends on the dark plate: the footer continues the paper block behind a faint hairline */
.site-footer { background: var(--ink); color: rgba(246, 244, 237, .55); padding: 0 0 2.25rem; font-family: var(--sans); font-size: var(--fs-small); }
.site-footer__in { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .75rem 2rem; padding-top: 1.5rem; border-top: 1px solid rgba(246, 244, 237, .14); }
.site-footer__in > span:first-child { font-family: var(--serif); font-size: 19px; letter-spacing: -.01em; color: rgba(246, 244, 237, .82); }
.site-footer a { text-decoration: none; color: rgba(246, 244, 237, .7); transition: color .15s; } .site-footer a:hover { color: var(--paper); }
.site-footer :focus-visible { outline-color: #c9896c; }
.noscript { font-family: var(--sans); font-size: var(--fs-small); color: var(--ink-2); text-align: center; padding: .75rem var(--gutter); border-bottom: 1px solid var(--rule); margin: 0; }

/* ---------- responsive ---------- */
/* single-column tracks are minmax(0, 1fr): a bare 1fr grows to its widest item and pushed phones to 508px */
@media (max-width: 1100px) {
  .ep__ctl { padding-right: 0; } .props { grid-template-columns: minmax(0, 1fr); }
  .ev { grid-template-columns: minmax(0, 1fr); align-items: start; }
  .horizon, .curves, .gdiag { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .horizon__svg { min-width: 0; max-width: 820px; margin: 0 auto; }
  .horizon:not(.is-end), .curves:not(.is-end), .gdiag:not(.is-end) { -webkit-mask-image: linear-gradient(90deg, #000 91%, transparent); mask-image: linear-gradient(90deg, #000 91%, transparent); }
}
/* wide figures fit the column down to 1001px; below that they scroll with a right-edge fade */
@media (max-width: 1000px) {
  .ep__svg { min-width: 1000px; } .curves__svg, .gdiag__svg { min-width: 1080px; }
  .ep__scroller:not(.is-end) { -webkit-mask-image: linear-gradient(90deg, #000 90%, transparent); mask-image: linear-gradient(90deg, #000 90%, transparent); }
}
@media (max-width: 640px) { .horizon__svg { min-width: 720px; } }
@media (max-width: 1240px) { .prop__math .katex { font-size: .98em; } .props > .prop:first-child .prop__math .katex { font-size: min(.98em, 100cqi / 21.6); } }
@media (max-width: 1023px) {
  .block__head, .ev, .ev--wide .ev__head, .idea__row, .cite-grid, .paper__grid { grid-template-columns: minmax(0, 1fr); }
  .ev { align-items: start; }
  .block__head { align-items: start; }
  .stats__group { padding: 0; }
  .take { grid-template-columns: minmax(0, 1fr); gap: 1.25rem; }
}
@media (max-width: 900px) {
  .ep__stop-long { display: none; } .ep__stop-short { display: inline; }
  .compass2__grid { grid-template-columns: minmax(0, 600px); justify-content: center; gap: 2rem; }
  .swap__grid { grid-template-columns: minmax(0, 1fr); }
  .swap__readout { border-left: 0; padding: 1.25rem .45rem 0; border-top: 1px solid var(--rule-strong); }
  .acc__body { padding-inline: .75rem; }
}
@media (max-width: 760px) {
  .stats { grid-template-columns: minmax(0, 1fr); gap: 1.25rem; }
  .mem__item { grid-template-columns: minmax(0, 1fr); gap: .5rem; }
  .rt__variant { display: block; margin-left: 0; font-size: 12.5px; }
}
/* phones: the table scrolls inside itself with the model column pinned, so the footnote stays still */
@media (max-width: 700px) { .rt { font-size: .875rem; } }
@media (max-width: 676px) {
  .rt-wrap { overflow-x: visible; }
  .rt { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; }
  .rt:not(.is-end) { -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent); mask-image: linear-gradient(90deg, #000 88%, transparent); }
  .rt tbody th.rt__name, .rt thead th.rt__model { position: sticky; left: 0; z-index: 1; background: var(--paper); box-shadow: inset -1px 0 var(--rule); }
  .rt tbody .rt__row--ours th.rt__name { background: var(--blue-tint); }
  .rt__section th span { position: sticky; left: .6rem; display: inline-block; }
}
/* with a mouse, the row hover runs under the pinned name cell too */
@media (max-width: 676px) and (hover: hover) {
  .rt tbody .rt__row:not(.rt__row--ours):hover th.rt__name { background: linear-gradient(rgba(70, 58, 30, .04), rgba(70, 58, 30, .04)) var(--paper); }
  .rt tbody .rt__row--ours:hover th.rt__name { background: #D6E4F7; }
}
@media (max-width: 600px) {
  .ep__ctl { grid-template-columns: minmax(0, 1fr); }
  .seg__label { white-space: nowrap; }
  .prop__cmp { grid-template-columns: minmax(0, 1fr); }
  .swap__table { min-width: 0; font-size: 14px; }
  .swap__table th, .swap__table td { padding: .45rem .2rem; }
  .swap__table thead th.swap__axis { white-space: nowrap; }
  .swap__table tbody th { font-size: 13.5px; }
  .swap__table tbody th small { display: block; margin-left: 0; }
  .swap__cell { min-width: 0; padding: .3rem .4rem; font-size: 14px; }
  .swap__table tfoot td, .swap__table tfoot th { font-size: 13px; }
  .swap__delta-col { font-size: 13.5px; }
  .swap__table td sup { display: inline; width: auto; }
  .swap__delta { grid-template-columns: minmax(0, 1fr) auto; }
  .fig-tag, .panel .fig-tag { position: static; display: block; margin-bottom: .6rem; }
  .cite-wrap pre { padding: 2rem .95rem 1.2rem; font-size: clamp(9.5px, calc((100cqi - 1.9rem) / 29.8), 15px); }
  .prop__math .katex { font-size: .92em; }
  .props > .prop:first-child .prop__math .katex { font-size: min(.92em, 100cqi / 21.6); }
  /* theory schematics bleed into the card padding; their labels scale around their own anchors */
  .prop { padding: 1.25rem 1.125rem; }
  .prop__fig svg { width: calc(100% + 2.25rem); max-width: none; margin-inline: -1.125rem; }
  .gdiag__legend { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: .2rem .45rem; }
  .gdiag__key { margin-left: 0; }
}
@media (max-width: 359px) { .cite-wrap pre { white-space: pre-wrap; overflow-wrap: anywhere; } }
@media (max-width: 480px) {
  /* schematic labels scale around their own anchors (SVG user units: WebKit misplaces fill-box origins on <text>) */
  .prop__fig text { transform-box: view-box; }
  .prop__fig .g-gap { transform-origin: 158px 65px; transform: scale(1.35); } .prop__fig .g-gap--p { transform-origin: 373px 65px; }
  .prop__fig .tb-lbl { transform-origin: 30px 19px; transform: scale(1.3); } .prop__fig .tb-lbl[x="290"] { transform-origin: 290px 19px; }
  .prop__fig .tb-sub { transform-origin: 30px 115px; transform: scale(1.1); } .prop__fig .tb-sub[x="290"] { transform-origin: 290px 115px; }
  .prop__fig .tb-key text { transform-origin: 418px 10px; transform: scale(1.3); } .prop__fig .tb-key text[x="462"] { transform-origin: 462px 12px; }
  .prop__defs { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .prop__defs div { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr); align-items: baseline; padding: .45rem 0; }
  .prop__defs dd { margin: 0; }
}
@media (max-width: 430px) {
  .swap__table { font-size: 13px; }
  .swap__table th, .swap__table td { padding: .42rem .1rem; }
  .swap__table thead th, .swap__table tbody th { font-size: 12.5px; }
  .swap__cell { padding: .28rem .2rem; font-size: 13px; }
  .swap__delta-col { font-size: 12.5px; }
  .swap__table tfoot td { font-size: 11.5px; letter-spacing: -.01em; }
}
@media (max-width: 360px) {
  .swap__table thead th { font-size: 12px; letter-spacing: -.01em; }
  .swap__cell { font-size: 12.5px; padding: .26rem .14rem; }
  .swap__delta-col { font-size: 12px; }
  .swap__table tfoot td { font-size: 11px; letter-spacing: -.02em; }
  .swap__table td sup { margin-left: 0; letter-spacing: -.04em; }
}
@media (max-width: 340px) { .panel--chart.swap { padding-inline: 8px; } }

/* touch: no grey tap flash, no hover state stuck after a tap, no swipe-back from inside a scroller */
html { -webkit-tap-highlight-color: transparent; }
.ep__scroller, .horizon, .curves, .gdiag, .rt-wrap, .rt, .cite-wrap pre { overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: var(--rule-strong) transparent; }
/* a keyboard-focused scroller drops its edge fade, which would otherwise mask the focus ring */
.ep__scroller:focus-visible, .curves:focus-visible, .rt:focus-visible { -webkit-mask-image: none; mask-image: none; }
@media (hover: none) {
  .btn--primary:hover { background: var(--ink); border-color: var(--ink); }
  .block--dark .btn--primary:hover { background: var(--paper); border-color: var(--paper); }
  .ep__play:hover { background: transparent; color: var(--ink-2); border-color: var(--rule-strong); }
  .swap__cell:hover:not(.is-active) { background: transparent; border-color: transparent; color: var(--ink-2); }
  .swap__delta:hover:not(:disabled) { border-color: transparent; }
  .acc details:not([open]):hover { background: transparent; }
  .acc details:has(> summary:hover) { border-color: var(--rule-strong); }
  .rt__row:hover { background: none; }
  .rt__row--ours:hover { background: var(--blue-tint); }
  .main-nav a:hover:not(.is-active) { color: var(--ink-2); } .site-footer a:hover { color: rgba(246, 244, 237, .7); }
}
@media (pointer: coarse) { .site-footer a { display: inline-block; padding-block: 10px; margin-block: -10px; } }
/* JavaScript off: the noscript line explains; hide the empty chart shells and the table toggle */
@media (scripting: none) { .panel:empty, .acc { display: none; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
@media print {
  @page { margin: 14mm 12mm; }
  .site-header, .ep__ctl, .copy-btn, .acc, .noscript { display: none; }
  body { background: #fff; }
  p, li, dd { orphans: 3; widows: 3; }
  .block, .block--tint, .block--dark { background: none; }
  .ep__svg, .horizon__svg, .curves__svg, .gdiag__svg { min-width: 0 !important; }
  .ep__scroller, .horizon, .curves, .gdiag, .rt-wrap { overflow: visible !important; -webkit-mask-image: none !important; mask-image: none !important; }
  .eyebrow, .block__head, h2, h3, .ev__head, .paper__name, .paper__title, .paper__cite-label { break-after: avoid; }
  .cpanel, .panel, .prop, .stats__group, .idea__row > div, .mem__item, .ev__text, .ev__head, .block__head, .take__item, .paper__grid > *, .cite-wrap, .swap__grid > * { break-inside: avoid; }
  .block--dark { color: var(--ink); --panel: transparent; --rule: #e0dacc; --rule-strong: #cbc2ae; }
  .block--dark h2, .block--dark .paper__title, .block--dark .paper__authors { color: var(--ink); }
  .block--dark .eyebrow, .block--dark .eyebrow .no, .block--dark .paper__cite-label, .block--dark .paper__affils, .block--dark .paper__authors sup { color: var(--ink-3); }
  .block--dark .cite-wrap pre { color: var(--ink); border: 1px solid var(--rule); }
  .btn--primary, .block--dark .btn--primary { background: none; color: var(--ink); border-color: var(--rule-strong); }
  .btn--primary svg[fill="currentColor"], .btn--primary svg[stroke="currentColor"] { color: var(--ink); }
  .gdiag__key, .lg { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .site-footer { background: none; color: var(--ink-3); }
  .site-footer__in { border-top-color: var(--rule); }
  .site-footer__in > span:first-child, .site-footer a { color: var(--ink-3); }
}