/* engineerediq.org shared stylesheet. Generated by tools/site/build.mjs from tools/site/base.css and shell.css. */
/* Layout: a gallery wall. Two tests hang like works on it: a framed collage as the centerpiece, archival
   label-cards for the tests, ocher for QUADRAVA-FR and indigo for PROTEUS, rust stitching as the only ornament. */
:root {
  --wall: #ECEEE8; --wall-2: #E2E6DD; --paper: #FBFBF7;
  --ink: #161A2B; --ink-2: #4C5465; --ink-3: #5E6677; --line: #CDD3C7;
  --indigo: #34407A; --on-indigo: #FFFFFF;
  --ocher: #8A5E0C; --ocher-fill: #CD9623; --on-ocher: #1D1504;
  --rust: #A54A21; --focus: #CD9623;
  --chart-p: #4C5AB0; --chart-q: #B07A12;
  --shadow: 0 1px 2px rgb(22 26 43 / .06), 0 12px 32px rgb(22 26 43 / .10);
  --font-display: "Bodoni Moda", "Bodoni 72", Didot, "Times New Roman", serif;
  --font-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --font-sym: "IBM Plex Mono", "Segoe UI Symbol", "Apple Symbols", "Noto Sans Symbols 2", "DejaVu Sans Mono", monospace;
  --header-h: 72px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --wall: #0F1322; --wall-2: #141A2D; --paper: #171C30;
    --ink: #ECE7DA; --ink-2: #B3B8C8; --ink-3: #9097A9; --line: #2B3352;
    --indigo: #A3AEEF; --on-indigo: #0F1322;
    --ocher: #E3B24E; --ocher-fill: #CD9623; --on-ocher: #1D1504;
    --rust: #DE8A57; --focus: #E3B24E;
    --chart-p: #6E7ED0; --chart-q: #BF8A26;
    --shadow: 0 1px 2px rgb(0 0 0 / .35), 0 12px 32px rgb(0 0 0 / .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --wall: #0F1322; --wall-2: #141A2D; --paper: #171C30;
  --ink: #ECE7DA; --ink-2: #B3B8C8; --ink-3: #9097A9; --line: #2B3352;
  --indigo: #A3AEEF; --on-indigo: #0F1322;
  --ocher: #E3B24E; --ocher-fill: #CD9623; --on-ocher: #1D1504;
  --rust: #DE8A57; --focus: #E3B24E;
  --chart-p: #6E7ED0; --chart-q: #BF8A26;
  --shadow: 0 1px 2px rgb(0 0 0 / .35), 0 12px 32px rgb(0 0 0 / .35);
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--wall); color: var(--ink); font: 400 1.0625rem/1.62 var(--font-body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--indigo); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 3px; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: 1140px; margin-inline: auto; padding-inline: 20px; }
.skip { position: absolute; left: -9999px; top: 8px; }
.skip:focus { left: 16px; z-index: 100; background: var(--paper); color: var(--ink); padding: 10px 14px; border-radius: 4px; }
[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 30; background: var(--wall);
  background: color-mix(in srgb, var(--wall) 90%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 28px; padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand img { width: 38px; height: 38px; border-radius: 8px; box-shadow: 0 0 0 1px var(--line); }
.brand-name { display: block; font-family: var(--font-display); font-size: 1.4rem; font-weight: 600; line-height: 1; }
.brand-sub { display: block; margin-top: 3px; font: 500 .66rem/1.2 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.nav { margin-left: auto; min-width: 0; max-width: 100%; }
.nav ul { display: flex; gap: 2px; list-style: none; margin: 0; padding: 2px; overflow-x: auto; scrollbar-width: none; }
.nav ul::-webkit-scrollbar { display: none; }
.nav a { display: block; padding: 9px 13px; border-radius: 999px; text-decoration: none; color: var(--ink-2);
  font-weight: 700; font-size: .95rem; white-space: nowrap; }
.nav a:hover { color: var(--ink); background: var(--wall-2); }
.nav a[aria-current="page"] { color: var(--on-indigo); background: var(--indigo); }
@media (max-width: 820px) { .nav { margin-left: 0; width: 100%; } .nav ul { margin-inline: -4px; padding-right: 36px;
  -webkit-mask-image: linear-gradient(90deg, #000 86%, transparent); mask-image: linear-gradient(90deg, #000 86%, transparent); } }

/* ---------- type ---------- */
.eyebrow, .kicker { font: 600 .76rem/1.35 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ocher); margin: 0 0 14px; }
h1, h2 { font-family: var(--font-display); font-weight: 500; letter-spacing: -.005em; text-wrap: balance; }
h1 { font-size: clamp(2.6rem, 6.2vw, 4.7rem); line-height: 1.02; margin: 0 0 22px; font-variation-settings: "opsz" 96; }
h2 { font-size: clamp(1.95rem, 3.8vw, 2.9rem); line-height: 1.08; margin: 0 0 14px; font-variation-settings: "opsz" 72; }
h3 { font-size: 1.18rem; line-height: 1.3; margin: 0 0 8px; text-wrap: balance; }
.lead { font-size: clamp(1.1rem, 1.6vw, 1.25rem); color: var(--ink-2); max-width: 60ch; }
.muted { color: var(--ink-3); }
.small { font-size: .9rem; }
.stitch { display: block; height: 9px; width: 132px; margin: 0 0 20px;
  background: repeating-linear-gradient(115deg, transparent 0 7px, var(--rust) 7px 9px, transparent 9px 16px); }
.section-head { max-width: 64ch; margin-bottom: 34px; }
.section-head p { color: var(--ink-2); margin: 0; }
.section-head h1 { font-size: clamp(2.1rem, 4.4vw, 3.3rem); line-height: 1.06; margin: 0 0 14px; }
.band { padding-block: 68px; }
.band.alt { background: var(--wall-2); }
.band + .band:not(.alt) { padding-top: 12px; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px;
  border-radius: 999px; font: 700 1rem/1.2 var(--font-body); text-decoration: none; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .15s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); text-decoration: none; }
.btn-primary { background: var(--indigo); color: var(--on-indigo); }
.btn-ocher { background: var(--ocher-fill); color: var(--on-ocher); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-small { min-height: 38px; padding: 8px 14px; font-size: .9rem; }
.btn .arrow { font-family: var(--font-body); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } .btn:hover { transform: none; } }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 56px; align-items: center; padding-block: 60px 52px; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; gap: 36px; padding-block: 36px 40px; } }
.chips { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 30px 0 0; padding: 0; list-style: none;
  font: 500 .78rem/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); }
.chips li::before { content: "×"; color: var(--rust); margin-right: 8px; font-weight: 600; }
.hero-art { margin: 0; justify-self: center; width: 100%; max-width: 470px; }
.hero-art .frame { transform: rotate(-1.3deg); }
.hero-art img { border-radius: 3px; box-shadow: var(--shadow); }
.hero-art figcaption { margin-top: 22px; font-family: var(--font-display); font-style: italic; font-size: 1.2rem; line-height: 1.4; color: var(--ink-2); text-align: center; text-wrap: balance; }

/* ---------- test cards ---------- */
.tests { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
@media (max-width: 840px) { .tests { grid-template-columns: 1fr; } }
.test-card { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 30px; display: flex;
  flex-direction: column; gap: 18px; box-shadow: var(--shadow); min-width: 0; }
.tag { display: inline-flex; align-items: center; gap: 9px; }
.tag i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.tag.q i { background: var(--ocher-fill); } .tag.p i { background: var(--indigo); }
.test-card.p .kicker { color: var(--indigo); }
.wordmark { font-family: var(--font-display); font-weight: 600; font-size: clamp(2rem, 3.4vw, 2.5rem); letter-spacing: .1em; line-height: 1; margin: 0; }
.wordmark small { display: block; margin-top: 8px; font: 500 .8rem/1.3 var(--font-mono); letter-spacing: .12em; color: var(--ink-3); text-transform: uppercase; }
.one { font-size: 1.12rem; color: var(--ink-2); margin: 0; }
.facts-dl { display: grid; grid-template-columns: max-content minmax(0, 1fr); margin: 0; border-top: 1px solid var(--line); }
.facts-dl dt, .facts-dl dd { margin: 0; padding: 10px 0; border-bottom: 1px solid var(--line); }
.facts-dl dt { font: 500 .74rem/1.6 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); padding-right: 18px; }
.test-card .cta-row { margin-top: auto; }

/* ---------- features ---------- */
.paths { list-style: none; margin: 0 0 34px; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 900px) { .paths { grid-template-columns: 1fr; } }
.paths li { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 20px 22px; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.paths .kicker { margin: 0; color: var(--ocher); font-size: .76rem; }
.paths h3 { margin: 0; }
.paths p { margin: 0 0 4px; color: var(--ink-2); font-size: .97rem; }
.paths a { margin-top: auto; font-weight: 700; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 34px; }
@media (max-width: 980px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
.feature { border-top: 2px solid var(--ink); padding-top: 16px; min-width: 0; }
.feature p { color: var(--ink-2); margin: 0; }

/* ---------- range chart ---------- */
.range { margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 26px 26px 18px; box-shadow: var(--shadow); }
.range-legend { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 0 0 22px; padding: 0; list-style: none; font-size: .9rem; color: var(--ink-2); }
.range-legend li { display: inline-flex; align-items: center; gap: 8px; }
.key { width: 26px; height: 12px; border-radius: 2px; display: inline-block; }
.key.solid { background: var(--ink-3); }
.key.hatch { border: 1px dashed var(--ink-3); background: repeating-linear-gradient(135deg, var(--ink-3) 0 1.5px, transparent 1.5px 6px); }
.key.line { width: 2px; height: 16px; border-radius: 0; background: repeating-linear-gradient(180deg, var(--ink) 0 4px, transparent 4px 7px); }
.plot { position: relative; }
.rrow { margin-bottom: 20px; }
.rlabel { display: flex; flex-wrap: wrap; gap: 2px 12px; align-items: baseline; margin-bottom: 8px; }
.rlabel b { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: .06em; }
.rlabel span { color: var(--ink-2); font-size: .92rem; }
.rtrack { position: relative; height: 18px; background: var(--wall-2); border-radius: 3px; }
.rtrack::after { content: ""; position: absolute; left: 63.333%; top: -6px; bottom: -6px; width: 2px;
  background: repeating-linear-gradient(180deg, var(--ink) 0 4px, transparent 4px 7px); }
.rband { position: absolute; top: 0; bottom: 0; border-radius: 4px; cursor: help; }
.rband.q { background: var(--chart-q); }
.rband.p { background: var(--chart-p); }
.rband.t { background: repeating-linear-gradient(90deg, var(--chart-p) 0 10px, var(--chart-q) 10px 20px); }
.rband.ext { border: 1px dashed var(--chart-p); border-radius: 0 4px 4px 0;
  background: repeating-linear-gradient(135deg, var(--chart-p) 0 2px, transparent 2px 7px); }
.rband:focus-visible { outline-offset: 3px; }
.rtick { position: absolute; top: -5px; bottom: -5px; width: 3px; margin-left: -1.5px; background: var(--ink); border-radius: 2px; cursor: help; }
.raxis { position: relative; height: 34px; border-top: 1px solid var(--ink-3); margin-top: 6px; font: 500 .74rem/1 var(--font-mono); color: var(--ink-3); }
.raxis span { position: absolute; top: 9px; transform: translateX(-50%); font-variant-numeric: tabular-nums; }
.raxis span::before { content: ""; position: absolute; left: 50%; top: -9px; height: 5px; width: 1px; background: var(--ink-3); }
.raxis span:first-child { transform: none; } .raxis span:first-child::before { left: 0; }
.raxis span:last-child { transform: translateX(-100%); } .raxis span:last-child::before { left: auto; right: 0; }
@media (max-width: 560px) { .raxis span.minor { display: none; } }
.raxis-title { text-align: center; font: 500 .74rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-top: 2px; }
.range figcaption { margin-top: 16px; font-size: .88rem; color: var(--ink-3); }
.range details { margin-top: 12px; }
.range summary { cursor: pointer; font-weight: 700; color: var(--indigo); font-size: .92rem; }
.tablebox { overflow-x: auto; margin-top: 10px; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { text-align: left; padding: 9px 12px 9px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 .72rem/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
td.num, th.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.tip { position: fixed; z-index: 80; max-width: 280px; padding: 9px 12px; border-radius: 4px; background: var(--ink); color: var(--wall);
  font-size: .86rem; line-height: 1.4; pointer-events: none; box-shadow: var(--shadow); }

/* ---------- warm-up ---------- */
.warm { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: start; }
@media (max-width: 860px) { .warm { grid-template-columns: 1fr; } }
.puzzle { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 24px; box-shadow: var(--shadow); min-width: 0; }
.srow { display: grid; grid-template-columns: 48px repeat(10, minmax(0, 1fr)); gap: 4px; align-items: center; margin-bottom: 4px; }
.srow .t { font: 500 .78rem/1 var(--font-mono); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.c { aspect-ratio: 1; border: 1px solid #C3C9BD; border-radius: 2px; background: #F3F4EF; }
.c.on { background: #161A2B; border-color: #161A2B; }
.c.pick { padding: 0; cursor: pointer; background: #FFFFFF; border: 1.5px dashed #5E6677; }
.c.pick:hover { border-style: solid; border-color: #161A2B; }
.c.pick[aria-pressed="true"] { background: #161A2B; border: 1.5px solid #161A2B; }
.srow.idx span { font: 500 .66rem/1 var(--font-mono); color: var(--ink-3); text-align: center; }
.feedback { margin-top: 16px; min-height: 3.2em; padding: 12px 14px; border-radius: 4px; background: var(--wall-2); color: var(--ink); }
.feedback.good { border-left: 3px solid var(--chart-p); }
.feedback.bad { border-left: 3px solid var(--rust); }

/* ---------- steps ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; counter-reset: step; }
@media (max-width: 980px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.steps li { counter-increment: step; min-width: 0; }
.steps li::before { content: counter(step); display: block; font-family: var(--font-display); font-size: 2.8rem; line-height: 1; color: var(--ocher); margin-bottom: 10px; }
.steps p { color: var(--ink-2); margin: 0; }

.cta-band { background: var(--indigo); color: var(--on-indigo); border-radius: 6px; padding: 44px; display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.cta-band h2 { margin: 0; color: var(--on-indigo); max-width: 22ch; }
.cta-band .btn-ghost { color: var(--on-indigo); border-color: var(--on-indigo); }
.cta-band .btn-ocher { box-shadow: none; }
.cta-band .share-status { flex-basis: 100%; color: var(--on-indigo); margin: 0; min-height: 0; }
.author { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 40px; align-items: center; }
.author img { width: 200px; height: 200px; border-radius: 50%; object-fit: cover; box-shadow: 0 0 0 6px var(--paper), 0 0 0 7px var(--line), var(--shadow); }
.mini-quote { font-family: var(--font-display); font-style: italic; font-size: clamp(1.35rem, 2.6vw, 1.75rem); line-height: 1.3; color: var(--indigo); margin: 4px 0 20px; }
@media (max-width: 700px) { .author { grid-template-columns: 1fr; gap: 22px; } .author img { width: 140px; height: 140px; } }

/* ---------- PROTEUS view ---------- */
.p-hero { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 44px; align-items: center; padding-block: 52px 36px; }
.p-hero img { border-radius: 50%; background: #FFFFFF; box-shadow: 0 0 0 1px var(--line), var(--shadow); }
@media (max-width: 760px) { .p-hero { grid-template-columns: 1fr; gap: 20px; padding-block: 32px 24px; } .p-hero img { width: 170px; } }
.p-hero .wordmark { font-size: clamp(2.8rem, 7vw, 4.8rem); letter-spacing: .16em; color: var(--indigo); }
.p-hero .sub { font-family: var(--font-display); font-style: italic; font-size: 1.35rem; color: var(--ink-2); margin: 8px 0 18px; }
.statline { display: flex; flex-wrap: wrap; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.statline li { padding: 16px 22px 16px 0; margin-right: 22px; border-right: 1px solid var(--line); min-width: 0; }
.statline li:last-child { border-right: 0; margin-right: 0; }
.statline b { display: block; font-family: var(--font-display); font-size: 1.7rem; line-height: 1.1; font-weight: 500; }
.statline span { font: 500 .72rem/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
@media (max-width: 640px) { .statline li { border-right: 0; flex: 1 1 45%; } }
.acts { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); counter-reset: act; }
@media (max-width: 760px) { .acts { grid-template-columns: 1fr; } }
.acts li { counter-increment: act; padding: 18px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; }
.acts li:nth-child(3n) { border-right: 0; }
.acts li:nth-last-child(-n+3) { border-bottom: 0; }
@media (max-width: 760px) { .acts li { border-right: 0; border-bottom: 1px solid var(--line); } .acts li:last-child { border-bottom: 0; } }
.acts li::before { content: counter(act); font: 600 .78rem/1 var(--font-mono); color: var(--ocher); display: block; margin-bottom: 8px; }
.acts b { display: block; font-size: 1.05rem; }
.acts span { color: var(--ink-2); font-size: .95rem; }
.worlds { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
@media (max-width: 940px) { .worlds { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .worlds { grid-template-columns: 1fr; } }
.world { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 22px; display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 4px 16px; align-items: start; min-width: 0; }
.world img { grid-row: span 3; width: 76px; height: 76px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 1px var(--line); }
.world .kicker { margin: 0; color: var(--ocher); }
.world h3 { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; }
.world p { margin: 6px 0 0; color: var(--ink-2); font-size: .95rem; }
.getit { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
@media (max-width: 860px) { .getit { grid-template-columns: 1fr; } }
.getcard { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 22px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.getcard p { color: var(--ink-2); margin: 0; font-size: .96rem; }
.getcard .btn { align-self: flex-start; margin-top: auto; }
.status { font-size: .88rem; color: var(--ink-2); min-height: 1.3em; margin: 0; overflow-wrap: anywhere; }

/* reader */
.reader { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--shadow); overflow: hidden; }
.reader-bar { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.reader-bar select { min-height: 40px; max-width: 100%; min-width: 0; flex: 1 1 220px; padding: 6px 10px; border-radius: 6px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); font: 400 .95rem var(--font-body); }
.iconbtn { min-width: 44px; min-height: 40px; padding: 6px 12px; border-radius: 6px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); font: 700 .95rem var(--font-body); cursor: pointer; }
.iconbtn:hover { background: var(--wall-2); }
.iconbtn:disabled { opacity: .45; cursor: default; }
.pagecount { font: 500 .82rem/1 var(--font-mono); color: var(--ink-3); font-variant-numeric: tabular-nums; white-space: nowrap; }
.reader-view { overflow: auto; max-height: 88vh; background: var(--wall-2); padding: 14px; }
.reader-view img { margin-inline: auto; width: 100%; max-width: 880px; background: #FFFFFF; box-shadow: var(--shadow); }
.reader-view.zoom img { width: 1241px; max-width: none; }
.reader-cap { padding: 10px 14px; font-size: .88rem; color: var(--ink-3); border-top: 1px solid var(--line); }

.rules { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 34px; }
@media (max-width: 860px) { .rules { grid-template-columns: 1fr; } }
.principle { background: var(--paper); border: 1px solid var(--ocher-fill); border-radius: 4px; padding: 24px; }
.principle ol { margin: 10px 0 12px; padding-left: 1.3em; }
.list { margin: 0; padding-left: 1.2em; }
.list li { margin-bottom: 8px; }
.list li::marker { color: var(--rust); }

/* ---------- QUADRAVA view ---------- */
.q-hero { padding-block: 52px 40px; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 48px; align-items: center; }
@media (max-width: 900px) { .q-hero { grid-template-columns: 1fr; gap: 30px; padding-block: 32px; } }
.q-hero .wordmark { font-size: clamp(2.6rem, 6.4vw, 4.4rem); letter-spacing: .08em; color: var(--ink); }
.q-hero .wordmark em { font-style: normal; color: var(--ocher); }
.q-tagline { font-family: var(--font-display); font-style: italic; font-size: clamp(1.3rem, 2.4vw, 1.7rem); line-height: 1.3; margin: 14px 0 18px; color: var(--ink-2); }
.quad { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; aspect-ratio: 1; max-width: 400px; width: 100%; justify-self: center; }
.quad div { border-radius: 4px; padding: 16px; display: flex; flex-direction: column; justify-content: space-between; min-width: 0; }
.quad b { font-family: var(--font-display); font-size: clamp(2.6rem, 6vw, 3.6rem); line-height: .9; font-weight: 600; }
.quad span { font: 600 .7rem/1.3 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.quad .v { background: var(--ocher-fill); color: #1D1504; }
.quad .n { background: #34407A; color: #FFFFFF; }
.quad .s { background: #A54A21; color: #FFFFFF; }
.quad .l { background: #161A2B; color: #ECE7DA; box-shadow: inset 0 0 0 1px var(--line); }
.drive { background: var(--paper); border: 1.5px solid var(--ocher-fill); border-radius: 6px; padding: 26px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 28px; align-items: center; }
@media (max-width: 760px) { .drive { grid-template-columns: 1fr; } }
.drive h2, .drive h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; line-height: 1.3; letter-spacing: normal; margin: 0 0 6px; font-variation-settings: normal; }
.drive p { margin: 0; color: var(--ink-2); }
.sections4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 980px) { .sections4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .sections4 { grid-template-columns: 1fr; } }
.sec4 { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 22px; min-width: 0; }
.sec4 .letter { font-family: var(--font-display); font-size: 2.6rem; line-height: 1; font-weight: 600; margin-bottom: 8px; display: block; }
.sec4 .range-tag { font: 600 .72rem/1.4 var(--font-mono); letter-spacing: .1em; color: var(--ink-3); }
.sec4 p { margin: 8px 0 0; color: var(--ink-2); font-size: .96rem; }
.l-v { color: var(--ocher); } .l-n { color: var(--indigo); } .l-s { color: var(--rust); } .l-l { color: var(--ink); }
.stats4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); }
@media (max-width: 760px) { .stats4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.stats4 div { padding: 20px; border-right: 1px solid var(--line); min-width: 0; }
.stats4 div:last-child { border-right: 0; }
@media (max-width: 760px) { .stats4 div:nth-child(2) { border-right: 0; } .stats4 div:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
.stats4 b { display: block; font-family: var(--font-display); font-size: 2rem; font-weight: 500; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stats4 > div > span { font-size: .9rem; color: var(--ink-2); }
@media (max-width: 560px) { .stats4 div { padding: 16px; } .stats4 b { font-size: 1.6rem; } }

/* ---------- submit view ---------- */
.mailcard { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; padding: 26px; box-shadow: var(--shadow); }
.mailaddr { font-family: var(--font-mono); font-weight: 600; font-size: clamp(.88rem, 3.8vw, 1.5rem); letter-spacing: -.01em; overflow-wrap: anywhere; user-select: all; color: var(--ink); margin: 6px 0 16px; }
.subjects { display: grid; gap: 10px; margin-top: 18px; }
.subject { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; padding: 10px 12px; border: 1px dashed var(--line); border-radius: 4px; }
.subject code { font: 500 .92rem var(--font-mono); color: var(--ink); flex: 1 1 260px; min-width: 0; word-break: break-word; }
.submit-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 34px; align-items: start; }
@media (max-width: 900px) { .submit-grid { grid-template-columns: 1fr; } }
.numbered { list-style: none; counter-reset: n; margin: 0; padding: 0; }
.numbered li { counter-increment: n; position: relative; padding: 0 0 22px 52px; }
.numbered li::before { content: counter(n); position: absolute; left: 0; top: -4px; width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; background: var(--ocher-fill); color: var(--on-ocher); }
.numbered h2 { font-family: inherit; font-weight: 700; font-size: 1.18rem; line-height: 1.3; letter-spacing: normal; margin: 0 0 4px; font-variation-settings: normal; }
.numbered p { color: var(--ink-2); margin: 0 0 8px; }

/* answer helper */
.helper { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; padding: 24px; box-shadow: var(--shadow); }
.helper-top { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; margin-bottom: 18px; }
@media (max-width: 640px) { .helper-top { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 700; margin-bottom: 4px; font-size: .95rem; }
.field input, .field select, .arow input { width: 100%; min-height: 44px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 4px;
  background: var(--wall); color: var(--ink); font: 400 1rem var(--font-body); }
.declare { display: flex; gap: 10px; align-items: flex-start; padding: 14px; border: 1px solid var(--ocher-fill); border-radius: 4px; margin-bottom: 18px; }
.declare input { width: 22px; height: 22px; margin-top: 2px; flex: none; accent-color: var(--indigo); }
.palette { position: sticky; top: calc(var(--header-h) + 8px); z-index: 10; display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  background: var(--paper); padding: 10px; border: 1px solid var(--line); border-radius: 6px; margin-bottom: 14px; box-shadow: var(--shadow); }
.palette .lbl { font: 600 .72rem/1.2 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-right: 4px; }
.palette button { min-width: 44px; min-height: 44px; border-radius: 6px; border: 1px solid var(--line); background: var(--wall); color: var(--ink);
  font: 400 1.3rem/1 var(--font-sym); cursor: pointer; }
.palette button:hover { background: var(--wall-2); }
.palette .progress { margin-left: auto; font: 500 .8rem var(--font-mono); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.helper fieldset { border: 1px solid var(--line); border-radius: 4px; padding: 6px 16px 10px; margin: 0 0 16px; min-width: 0; }
.helper legend { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; padding: 0 8px; }
.arow { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr); gap: 2px 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.arow:last-child { border-bottom: 0; }
.arow .num { font: 600 1rem/1.6 var(--font-mono); color: var(--ocher); grid-row: span 3; }
.arow label { font-weight: 700; }
.arow .hint { font-size: .86rem; color: var(--ink-3); }
.arow input { font: 400 1.15rem/1.3 var(--font-sym); letter-spacing: .04em; margin-top: 4px; }
.helper-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; }
.helper-out { width: 100%; min-height: 140px; margin-top: 14px; padding: 12px; font: 400 .9rem/1.5 var(--font-sym); border: 1px solid var(--line);
  border-radius: 4px; background: var(--wall); color: var(--ink); resize: vertical; }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; }
.qa { border-bottom: 1px solid var(--line); }
.qa summary { list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative; font-weight: 700; font-size: 1.12rem; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "+"; position: absolute; right: 6px; top: 16px; font-family: var(--font-display); font-size: 1.7rem; color: var(--ocher); }
.qa[open] summary::after { content: "−"; }
.qa .a { padding: 0 0 20px; color: var(--ink-2); max-width: 68ch; }
.qa .a p:last-child { margin-bottom: 0; }
.faq-cta { max-width: 860px; margin-top: 34px; padding: 26px; background: var(--paper); border: 1px solid var(--line); border-radius: 6px;
  display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; justify-content: space-between; }
.faq-cta h2 { font-family: var(--font-display); font-weight: 600; font-size: 1.4rem; line-height: 1.3; letter-spacing: normal; margin: 0 0 8px; font-variation-settings: normal; }
.faq-cta p { margin: 0; color: var(--ink-2); }
.nowrap { white-space: nowrap; }
.mail-inline { display: inline-block; }

/* ---------- founder ---------- */
.founder { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 48px; align-items: start; padding-block: 52px; }
@media (max-width: 820px) { .founder { grid-template-columns: 1fr; gap: 26px; padding-block: 32px; } }
.portrait { margin: 0; }
.portrait img { width: 100%; max-width: 300px; aspect-ratio: 413 / 531; object-fit: cover; border-radius: 6px; box-shadow: var(--shadow); background: #FFFFFF; }
.portrait figcaption { font: 500 .72rem/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-top: 12px; }
.founder .wordmark { font-size: clamp(2rem, 4.4vw, 3rem); letter-spacing: .02em; }
.creds { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; padding: 0; list-style: none; }
.creds li { padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: .9rem; background: var(--paper); }
@media (max-width: 560px) { .creds { gap: 6px; } .creds li { font-size: .8rem; padding: 5px 10px; text-wrap: balance; } }
.law { margin: 34px 0; padding: 30px 32px 26px; background: var(--paper); border: 1px solid var(--line); border-radius: 6px; box-shadow: var(--shadow); }
.law .kicker { margin: 0 0 16px; }
.law blockquote { position: relative; margin: 0; padding-left: 3.4rem; font-family: var(--font-display); font-size: 1.25rem; line-height: 1.6;
  color: var(--ink); font-optical-sizing: auto; }
.law .qmark { position: absolute; left: -.1rem; top: -.55rem; font-family: var(--font-display); font-size: 5.2rem; line-height: 1; font-weight: 600; color: var(--ocher-fill); }
.law blockquote p { margin: 0 0 14px; max-width: 60ch; }
.law .law-line { font-style: italic; font-size: clamp(1.45rem, 2.7vw, 1.85rem); line-height: 1.3; color: var(--indigo); margin: 20px 0; text-wrap: balance; }
.law .punch { font-style: italic; font-weight: 600; margin-bottom: 0; }
.law figcaption { margin: 18px 0 0 3.4rem; font: 700 .82rem/1.4 var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
@media (max-width: 560px) { .law { padding: 24px 20px 20px; } .law blockquote { padding-left: 2.4rem; font-size: 1.12rem; } .law .qmark { font-size: 4rem; } .law figcaption { margin-left: 2.4rem; } }

/* ---------- footer ---------- */
.site-footer { background: var(--wall-2); border-top: 1px solid var(--line); padding-block: 44px 36px; margin-top: 40px; }
.foot { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr); gap: 30px; }
@media (max-width: 820px) { .foot { grid-template-columns: 1fr; } }
.foot h2 { font: 600 .74rem/1.3 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 12px; font-variation-settings: normal; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 8px; }
.fine { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); font-size: .86rem; color: var(--ink-3); }
.fine p { margin-bottom: 6px; }


/* ====================================================================================================================
   Site shell (all pages): navigation with a Tests menu, mobile menu, breadcrumbs, footer, and the components of the
   content pages (tests, societies, research, technical manual). Generated into /css/site.css by tools/site/build.mjs.
   ==================================================================================================================== */
.topbar-inner { flex-wrap: nowrap; min-height: 58px; }
.brand { flex: none; }
.nav { margin-left: auto; min-width: 0; }
/* the base stylesheet styles .nav ul as a scrolling strip: these selectors are more specific and replace that */
.nav ul.nav-list, .nav ul.sub { overflow: visible; -webkit-mask-image: none; mask-image: none; scrollbar-width: auto; }
.nav ul.nav-list { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav-list > li { position: relative; }
.nav a, .nav-sub-btn { display: block; padding: 9px 12px; border-radius: 999px; text-decoration: none; color: var(--ink-2);
  font: 700 .95rem/1.2 var(--font-body); white-space: nowrap; background: none; border: 0; cursor: pointer; }
.nav a:hover, .nav-sub-btn:hover { color: var(--ink); background: var(--wall-2); }
.nav a[aria-current="page"], .nav-sub-btn.is-current { color: var(--on-indigo); background: var(--indigo); }
.nav-sub-btn::after { content: ""; display: inline-block; width: 6px; height: 6px; margin-left: 8px; border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor; transform: translateY(-3px) rotate(45deg); transition: transform .15s ease; }
.has-sub.open .nav-sub-btn::after { transform: translateY(1px) rotate(225deg); }
.nav ul.sub { position: absolute; top: calc(100% + 10px); left: 0; width: 330px; list-style: none; margin: 0; padding: 8px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); display: none; z-index: 40; flex-direction: column; gap: 0; }
.nav .has-sub.open ul.sub { display: block; }
.sub a { display: grid; gap: 2px; padding: 10px 12px; border-radius: 6px; white-space: normal; color: var(--ink); }
.sub a b { font-size: 1rem; letter-spacing: .02em; }
.sub a span { font: 400 .86rem/1.35 var(--font-body); color: var(--ink-3); }
.sub a[aria-current="page"] { background: var(--wall-2); color: var(--ink); box-shadow: inset 3px 0 0 var(--indigo); }
.sub .sub-all { border-top: 1px solid var(--line); margin-top: 6px; padding-top: 8px; }
.sub .sub-all a { font-weight: 700; color: var(--indigo); }
.nav .nav-cta { margin-left: 8px; }
.nav .nav-cta a { background: var(--indigo); color: var(--on-indigo); padding: 9px 16px; }
.nav .nav-cta a:hover { background: var(--indigo); color: var(--on-indigo); box-shadow: var(--shadow); }
.menu-btn { display: none; align-items: center; gap: 8px; margin-left: auto; min-height: 44px; padding: 8px 14px; border-radius: 999px;
  border: 1.5px solid var(--ink); background: transparent; color: var(--ink); font: 700 .95rem var(--font-body); cursor: pointer; }
.menu-btn i { display: block; width: 16px; height: 2px; background: currentColor; position: relative; }
.menu-btn i::before, .menu-btn i::after { content: ""; position: absolute; left: 0; width: 16px; height: 2px; background: currentColor; }
.menu-btn i::before { top: -5px; } .menu-btn i::after { top: 5px; }
.menu-btn[aria-expanded="true"] i { background: transparent; }
.menu-btn[aria-expanded="true"] i::before { top: 0; transform: rotate(45deg); }
.menu-btn[aria-expanded="true"] i::after { top: 0; transform: rotate(-45deg); }
@media (max-width: 1060px) {
  .topbar { position: sticky; }
  .menu-btn { display: inline-flex; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; margin: 0; background: var(--paper); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); max-height: calc(100vh - 64px); max-height: calc(100dvh - 64px); overflow-y: auto; display: none; }
  .nav.open { display: block; }
  .nav ul.nav-list { flex-direction: column; align-items: stretch; gap: 0; padding: 10px 20px 18px; max-width: 1140px; margin-inline: auto; }
  .nav-list > li { border-bottom: 1px solid var(--line); }
  .nav-list > li:last-child { border-bottom: 0; }
  .nav a, .nav-sub-btn { border-radius: 6px; padding: 14px 8px; font-size: 1.05rem; width: 100%; text-align: left; }
  .nav-sub-btn { display: none; }
  .nav ul.sub { position: static; display: block; width: auto; border: 0; box-shadow: none; padding: 0 0 8px; background: transparent; }
  .sub::before { content: "Tests"; display: block; padding: 12px 8px 4px; font: 600 .74rem/1.3 var(--font-mono); letter-spacing: .14em;
    text-transform: uppercase; color: var(--ink-3); }
  .sub a { padding: 10px 8px; }
  .nav .nav-cta { margin: 14px 0 0; border-bottom: 0; }
  .nav .nav-cta a { text-align: center; border-radius: 999px; }
}
@media (max-width: 420px) { .brand-sub { display: none; } }

/* breadcrumbs */
.crumbs { padding-top: 18px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 4px 0; list-style: none; margin: 0; padding: 0; font-size: .88rem; color: var(--ink-3); }
.crumbs li + li::before { content: "/"; margin: 0 9px; color: var(--line); }
.crumbs a { color: var(--ink-2); }
.crumbs [aria-current="page"] { color: var(--ink-3); }

/* resume banner (home page): shown when this browser has a test in progress */
.resume-banner { background: var(--indigo); color: var(--on-indigo); }
.resume-banner .wrap { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; justify-content: space-between; padding-block: 12px; }
.resume-banner p { margin: 0; font-weight: 700; }
.resume-banner .btn { background: var(--on-indigo); color: var(--indigo); min-height: 40px; padding: 8px 18px; }

/* footer, four columns */
.foot { grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); }
@media (max-width: 980px) { .foot { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .foot { grid-template-columns: 1fr; } }
.foot a { color: var(--ink-2); text-decoration: none; }
.foot a:hover { color: var(--indigo); text-decoration: underline; }

/* ---------- content pages ---------- */
.page-head { padding-block: 34px 40px; }
.page-head h1 { font-size: clamp(2.3rem, 5.2vw, 3.9rem); line-height: 1.04; margin: 0 0 18px; max-width: 20ch; }
.page-head .lead { margin-bottom: 0; }
.page-head .cta-row { margin-top: 26px; }
.page-hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 48px; align-items: center; padding-block: 34px 44px; }
@media (max-width: 900px) { .page-hero { grid-template-columns: 1fr; gap: 28px; } }
.page-hero h1 { font-size: clamp(2.4rem, 5.6vw, 4.2rem); line-height: 1.02; margin: 0 0 18px; }
.page-hero figure { margin: 0; justify-self: center; width: 100%; max-width: 420px; }
.page-hero figure img { border-radius: 3px; box-shadow: var(--shadow); transform: rotate(1.2deg); }
.page-hero figcaption { margin-top: 18px; font-family: var(--font-display); font-style: italic; font-size: 1.1rem; color: var(--ink-2); text-align: center; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; list-style: none; margin: 0; padding: 0; }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1000px) { .cards.four { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .cards, .cards.two, .cards.four { grid-template-columns: 1fr; } }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 22px 24px; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.card h2, .card h3 { margin: 0; }
.card h2 { font-size: 1.5rem; }
.card p { margin: 0; color: var(--ink-2); }
.card .kicker { margin: 0; }
.card .more { margin-top: auto; padding-top: 6px; font-weight: 700; }
.card.accent { border-color: var(--ocher-fill); }
.callout { background: var(--paper); border: 1px solid var(--line); border-left: 4px solid var(--ocher-fill); border-radius: 4px; padding: 18px 22px; margin: 0 0 24px; }
.callout p:last-child { margin-bottom: 0; }
.callout.indigo { border-left-color: var(--indigo); }
.callout.rust { border-left-color: var(--rust); }
.badge { display: inline-block; font: 600 .7rem/1.3 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; padding: 4px 8px;
  border-radius: 3px; background: var(--wall-2); color: var(--ink-2); border: 1px solid var(--line); }
.prose { max-width: 74ch; }
.prose h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 46px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.2rem; margin: 28px 0 8px; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1em; }
.prose li { margin-bottom: 6px; }
.prose li::marker { color: var(--rust); }
.prose table { margin: 8px 0 18px; }
.prose figure { margin: 18px 0 24px; }
.prose figcaption { font-size: .88rem; color: var(--ink-3); margin-top: 8px; }
.prose code { font: 500 .92em var(--font-mono); background: var(--wall-2); padding: 1px 5px; border-radius: 3px; }
.toc { background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 18px 22px; margin: 0 0 30px; max-width: 74ch; }
.toc h2 { font: 600 .74rem/1.3 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 10px; font-variation-settings: normal; }
.toc ol { margin: 0; padding-left: 1.3em; columns: 2; column-gap: 28px; }
@media (max-width: 640px) { .toc ol { columns: 1; } }
.toc li { margin-bottom: 4px; break-inside: avoid; }
.statgrid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 4px; background: var(--paper); margin: 0 0 26px; }
@media (max-width: 760px) { .statgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.statgrid div { padding: 18px 20px; border-right: 1px solid var(--line); min-width: 0; }
.statgrid div:last-child { border-right: 0; }
@media (max-width: 760px) { .statgrid div:nth-child(2n) { border-right: 0; } .statgrid div:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
.statgrid b { display: block; font-family: var(--font-display); font-size: 2rem; font-weight: 500; line-height: 1.1; font-variant-numeric: tabular-nums; }
.statgrid span { font-size: .9rem; color: var(--ink-2); }
.steps-list { list-style: none; counter-reset: s; margin: 0; padding: 0; display: grid; gap: 16px; }
.steps-list li { counter-increment: s; position: relative; padding-left: 52px; min-height: 40px; }
.steps-list li::before { content: counter(s); position: absolute; left: 0; top: -2px; width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; background: var(--ocher-fill); color: var(--on-ocher); }
.steps-list h3 { margin: 0 0 4px; font-size: 1.08rem; }
.steps-list p { margin: 0; color: var(--ink-2); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 34px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 28px; color: var(--ink-2); }
.check-list li::before { content: ""; position: absolute; left: 2px; top: .45em; width: 12px; height: 7px; border-left: 2.5px solid var(--indigo);
  border-bottom: 2.5px solid var(--indigo); transform: rotate(-45deg); }
.check-list b { color: var(--ink); }

/* societies */
.soc-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
@media (max-width: 820px) { .soc-cards { grid-template-columns: 1fr; } }
.soc { position: relative; overflow: hidden; border-radius: 6px; padding: 26px 26px 24px; color: #F4F1E8; min-width: 0;
  display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow); }
.soc::after { content: ""; position: absolute; inset: 0; pointer-events: none; background:
  radial-gradient(1px 1px at 12% 18%, rgb(255 255 255 / .55), transparent 60%), radial-gradient(1px 1px at 78% 32%, rgb(255 255 255 / .45), transparent 60%),
  radial-gradient(1.5px 1.5px at 64% 74%, rgb(255 255 255 / .4), transparent 60%), radial-gradient(1px 1px at 30% 82%, rgb(255 255 255 / .35), transparent 60%); opacity: 0; }
.soc.nereid { background: linear-gradient(160deg, #2E6E86 0%, #1F4E6B 55%, #183B57 100%); }
.soc.aphotic { background: linear-gradient(170deg, #142A47 0%, #0D1B33 60%, #0A1426 100%); }
.soc.hadal { background: linear-gradient(175deg, #0E1424 0%, #090D18 60%, #05070D 100%); }
.soc.exocosm { background: radial-gradient(120% 90% at 85% 10%, #4A3A8C 0%, #24194F 45%, #0B0820 100%); }
.soc.exocosm::after, .soc.hadal::after { opacity: 1; }
.soc .depth { font: 600 .74rem/1.3 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: rgb(244 241 232 / .78); margin: 0; }
.soc h2, .soc h3 { color: #FFFFFF; margin: 0; font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 2.6vw, 2.1rem); line-height: 1.12; }
.soc .motto { font-family: var(--font-display); font-style: italic; font-size: 1.12rem; color: #F1DFA9; margin: 0; }
.soc p { margin: 0; color: rgb(244 241 232 / .9); }
.soc .crit { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.soc .crit span { font: 600 .78rem/1.3 var(--font-mono); letter-spacing: .06em; padding: 6px 10px; border-radius: 999px;
  background: rgb(255 255 255 / .12); border: 1px solid rgb(255 255 255 / .22); color: #FFFFFF; }
.soc a { color: #FFFFFF; font-weight: 700; margin-top: auto; padding-top: 8px; }
.soc a:focus-visible { outline-color: #F1DFA9; }
.qual { width: 100%; }
.qual td.yes { font-weight: 700; color: var(--indigo); }
.qual td.no { color: var(--ink-3); }
.roster-wrap { overflow-x: auto; }
.roster td, .roster th { white-space: nowrap; }
.roster td.name { white-space: normal; font-weight: 700; }
.empty { color: var(--ink-3); font-style: italic; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.form-grid .full { grid-column: 1 / -1; }
.form-grid label { display: block; font-weight: 700; margin-bottom: 4px; font-size: .95rem; }
.form-grid input, .form-grid select, .form-grid textarea { width: 100%; min-height: 44px; padding: 9px 11px; border: 1px solid var(--line);
  border-radius: 4px; background: var(--wall); color: var(--ink); font: 400 1rem var(--font-body); }
.form-grid textarea { min-height: 96px; resize: vertical; }
.form-grid .hint { display: block; font-size: .85rem; color: var(--ink-3); margin-top: 4px; }
.form-grid .check { display: flex; gap: 10px; align-items: flex-start; }
.form-grid .check input { width: 22px; min-height: 22px; height: 22px; margin-top: 2px; flex: none; accent-color: var(--indigo); }
.form-grid .check label { font-weight: 400; margin: 0; }
.form-status { min-height: 1.4em; margin: 10px 0 0; font-weight: 700; }
.form-status.ok { color: var(--indigo); }
.form-status.err { color: var(--rust); }

/* tests overview */
.compare { min-width: 760px; }
.compare th:first-child, .compare td:first-child { font-weight: 700; }
.test-mark { font-family: var(--font-display); font-weight: 600; letter-spacing: .08em; }

@media print { .topbar, .site-footer, .resume-banner, .menu-btn { display: none !important; } }
@media (min-width: 1061px) { .nav .has-sub:hover ul.sub, .nav .has-sub:focus-within ul.sub { display: block; } }
@media (max-width: 1060px) { html:not(.js) .nav { position: static; display: block; box-shadow: none; } html:not(.js) .menu-btn { display: none; }
  html:not(.js) .topbar-inner { flex-wrap: wrap; } }

.lc { text-transform: none; }