/* InfoGlyphs: "poster board" theme. Archivo Black + Work Sans, hard edges, offset shadows. */
@font-face { font-family: "Archivo Black"; src: url(fonts/archivo-black-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Work Sans"; src: url(fonts/work-sans-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Work Sans"; src: url(fonts/work-sans-latin-400-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Work Sans"; src: url(fonts/work-sans-latin-500-normal.woff2) format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Work Sans"; src: url(fonts/work-sans-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Work Sans"; src: url(fonts/work-sans-latin-700-normal.woff2) format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --paper: #FAF7F0; --card: #FFFFFF; --ink: #141414; --muted: #4A4741; --rule: #D8D2C5; --mid: #BDB7AA; --soft: #F1ECE1;
  --human: #E2492F; --human-t: #B3301A; --human-tint: #F9D9D1;
  --economy: #0D8C7E; --economy-t: #08695F; --economy-tint: #CDEDE8;
  --tech: #4A47D1; --tech-t: #3B38B8; --tech-tint: #DCDBF8;
  --lists: #E8A500; --lists-t: #8A5D00; --lists-tint: #FBEAC0;
  --acc: var(--human); --acc-t: var(--human-t); --tint: var(--human-tint);
  --display: "Archivo Black", "Arial Black", Impact, sans-serif;
  --body: "Work Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --edge: 3px solid var(--ink); --shadow: 6px 6px 0 var(--ink);
  --max: 1240px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121212; --card: #1C1C1B; --ink: #F3F0EA; --muted: #BDB8AE; --rule: #3B3A37; --mid: #5E5B55; --soft: #232220;
    --human: #FF7457; --human-t: #FF8E76; --human-tint: #4A2219;
    --economy: #2EC4B0; --economy-t: #4FD6C3; --economy-tint: #123A35;
    --tech: #8F8CFF; --tech-t: #A9A7FF; --tech-tint: #24234F;
    --lists: #F5C030; --lists-t: #F7CB55; --lists-tint: #3D3110;
  }
}
.sec-human, .tone-human { --acc: var(--human); --acc-t: var(--human-t); --tint: var(--human-tint); }
.sec-economy, .tone-economy { --acc: var(--economy); --acc-t: var(--economy-t); --tint: var(--economy-tint); }
.sec-tech, .tone-tech { --acc: var(--tech); --acc-t: var(--tech-t); --tint: var(--tech-tint); }
.sec-lists-how-tos, .tone-lists { --acc: var(--lists); --acc-t: var(--lists-t); --tint: var(--lists-tint); }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.65 var(--body); overflow-x: hidden; }
img, svg { max-width: 100%; height: auto; }
a { color: var(--ink); text-decoration-color: var(--acc); text-decoration-thickness: 3px; text-underline-offset: 3px; }
a:hover { background: var(--tint); }
:focus-visible { outline: 3px solid var(--tech); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--display); font-weight: 400; line-height: 1.12; letter-spacing: -.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 1.3rem + 3vw, 3.4rem); }
h2 { font-size: clamp(1.45rem, 1.1rem + 1.2vw, 1.9rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper); padding: 10px 16px; z-index: 10; }
.skip:focus { left: 12px; top: 12px; }
.eyebrow { font-weight: 700; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--acc-t); margin-bottom: .6em; }
.lede { font-size: 1.2rem; line-height: 1.55; color: var(--muted); max-width: 46em; }
.byline { font-size: .9rem; color: var(--muted); }
mark { color: inherit; }

/* masthead */
.mast { border-bottom: var(--edge); background: var(--card); position: relative; z-index: 3; }
.mast-in { max-width: var(--max); margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 20px; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; font-family: var(--display); font-size: 1.45rem; }
.logo:hover { background: none; }
.nav { margin-left: auto; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 6px; }
.nav a { display: block; padding: 8px 14px; font-weight: 600; text-decoration: none; border: 2px solid transparent; }
.nav a:hover { border-color: var(--ink); background: var(--soft); }
.nav a[aria-current="page"] { border-color: var(--ink); background: var(--lists); color: #141414; }
.nav-toggle { display: none; margin-left: auto; font: 600 1rem var(--body); background: var(--card); color: var(--ink); border: var(--edge); padding: 6px 14px; cursor: pointer; }
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--card); border-bottom: var(--edge); }
  .nav.open { display: block; }
  .nav ul { flex-direction: column; padding: 10px 16px 16px; }
  .mast-in { padding: 12px 16px; }
}

/* hero */
.hero { border-bottom: var(--edge); background:
  linear-gradient(90deg, var(--human) 0 25%, var(--economy) 25% 50%, var(--tech) 50% 75%, var(--lists) 75%) top / 100% 8px no-repeat, var(--paper); }
.hero-in { max-width: var(--max); margin: 0 auto; padding: 64px 24px 72px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.3rem, 1.2rem + 4vw, 4.3rem); }
.hl-a { background: var(--human-tint); box-shadow: inset 0 -.18em 0 var(--human); padding: 0 .08em; }
.hl-b { background: var(--economy-tint); box-shadow: inset 0 -.18em 0 var(--economy); padding: 0 .08em; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn { display: inline-block; padding: 13px 22px; font-weight: 700; text-decoration: none; border: var(--edge); background: var(--card); box-shadow: 4px 4px 0 var(--ink); transition: transform .1s, box-shadow .1s; }
.btn:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); background: var(--card); }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: var(--ink); }
.hero-poster { margin: 0; border: var(--edge); box-shadow: var(--shadow); background: var(--card); max-height: 640px; overflow: hidden; position: relative; }
.hero-poster svg { display: block; width: 100%; }
.hero-poster figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 40px 18px 14px; background: linear-gradient(transparent, var(--card) 45%); font-weight: 600; }
@media (max-width: 900px) { .hero-in { grid-template-columns: 1fr; gap: 36px; padding: 40px 16px 48px; } .hero-poster { max-height: 520px; } }

/* bands */
.band { padding: 64px 0; border-bottom: var(--edge); }
.band-alt { background: var(--soft); }
.band-in { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.band-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.band-head h2 { margin: 0; }
.band-head a { font-weight: 700; }
.band-intro { color: var(--muted); max-width: 46em; }
.two { display: grid; grid-template-columns: 1.2fr .8fr; gap: 56px; }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; gap: 32px; } .band { padding: 44px 0; } .band-in { padding: 0 16px; } }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step a { display: flex; flex-direction: column; height: 100%; padding: 0 18px 20px; border: var(--edge); background: var(--card); text-decoration: none; border-top: 12px solid var(--acc); transition: transform .12s, box-shadow .12s; }
.step a:hover { transform: translate(-3px, -3px); box-shadow: var(--shadow); background: var(--card); }
.step-n { font-family: var(--display); font-size: 2.6rem; color: var(--acc-t); line-height: 1.3; }
.step-t { font-weight: 700; font-size: 1.1rem; line-height: 1.3; margin-bottom: 8px; }
.step-s { color: var(--muted); font-size: .95rem; line-height: 1.5; }
@media (max-width: 1000px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin: 26px 0; }
.tile { display: flex; flex-direction: column; border: var(--edge); background: var(--card); text-decoration: none; transition: transform .12s, box-shadow .12s; }
.tile:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--acc); background: var(--card); }
.tile-art { display: block; height: 250px; overflow: hidden; border-bottom: var(--edge); background: var(--card); }
.tile-art svg { display: block; width: 100%; }
.tile-tag { margin: 14px 16px 0; font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--acc-t); }
.tile-title { margin: 4px 16px 6px; font-weight: 700; font-size: 1.08rem; line-height: 1.3; }
.tile-sum { margin: 0 16px 18px; color: var(--muted); font-size: .93rem; line-height: 1.5; }
@media (max-width: 1100px) { .tiles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .tiles { grid-template-columns: 1fr; } }

.method { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: var(--edge); background: var(--card); margin-top: 20px; }
.method > div { padding: 22px 20px; border-right: var(--edge); }
.method > div:last-child { border-right: 0; }
.m-n { display: inline-grid; place-items: center; width: 40px; height: 40px; background: var(--ink); color: var(--paper); font-family: var(--display); margin-bottom: 12px; }
.method p { color: var(--muted); margin: 0; font-size: .97rem; }
@media (max-width: 900px) { .method { grid-template-columns: 1fr 1fr; } .method > div:nth-child(2) { border-right: 0; } .method > div:nth-child(-n+2) { border-bottom: var(--edge); } }
@media (max-width: 520px) { .method { grid-template-columns: 1fr; } .method > div { border-right: 0; border-bottom: var(--edge); } .method > div:last-child { border-bottom: 0; } }

.qa details { border: 2px solid var(--ink); background: var(--card); margin-bottom: 10px; }
.qa summary { cursor: pointer; padding: 14px 18px; font-weight: 700; list-style: none; position: relative; padding-right: 44px; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "+"; position: absolute; right: 16px; top: 8px; font: 400 1.6rem var(--display); }
.qa details[open] summary::after { content: "−"; }
.qa details p { padding: 0 18px 16px; margin: 0; color: var(--muted); }
.postlist { list-style: none; padding: 0; margin: 0; }
.postlist li { border-top: 2px solid var(--ink); padding: 14px 0; }
.postlist a { font-weight: 700; font-size: 1.1rem; }
.postlist p { color: var(--muted); margin: 6px 0 0; }
.postlist.big h2 { font-size: 1.5rem; margin: 0 0 6px; }

/* generic pages */
.page-wide { max-width: var(--max); margin: 0 auto; padding: 28px 24px 72px; }
.page-narrow { max-width: 820px; margin: 0 auto; padding: 28px 24px 72px; }
@media (max-width: 600px) { .page-wide, .page-narrow { padding: 20px 16px 56px; } }
.page-head { padding: 18px 0 26px; border-bottom: var(--edge); margin-bottom: 30px; }
.sec-head { border-bottom-color: var(--acc); border-bottom-width: 8px; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; font-size: .88rem; color: var(--muted); }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--mid); }
.crumbs a { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 30px; }
.chip { display: inline-flex; gap: 8px; align-items: center; padding: 8px 14px; border: 2px solid var(--ink); font-weight: 700; text-decoration: none; background: var(--card); }
.chip::before { content: ""; width: 12px; height: 12px; background: var(--acc); }
.chip span { font-weight: 500; color: var(--muted); }
.gsec { margin-top: 44px; min-width: 0; }
.gsec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.gsec-grid .band-intro { min-height: 3.3em; }
.tiles-2 { grid-template-columns: repeat(2, 1fr); }
.tiles-big { max-width: 900px; }
.tiles-big .tile-art { height: 420px; }
@media (max-width: 1000px) { .gsec-grid { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .tiles-2 { grid-template-columns: 1fr; } .tiles-big .tile-art { height: 300px; } }

.guide-rows { list-style: none; margin: 0; padding: 0; }
.guide-rows li { display: grid; grid-template-columns: 110px 1fr; gap: 20px; padding: 24px 0; border-bottom: 2px solid var(--rule); }
.gr-n { font-family: var(--display); font-size: 3.4rem; line-height: 1; color: var(--acc-t); -webkit-text-stroke: 0; }
.guide-rows h2 { font-size: 1.5rem; margin-bottom: 6px; }
.guide-rows h2 a { text-decoration: none; }
.guide-rows h2 a:hover { text-decoration: underline; text-decoration-color: var(--acc); }
.guide-rows p { color: var(--muted); margin: 0 0 4px; max-width: 48em; }
.gr-meta { font-size: .88rem; }
@media (max-width: 560px) { .guide-rows li { grid-template-columns: 1fr; gap: 4px; } .gr-n { font-size: 2.4rem; } }

/* guide layout */
.doc { max-width: var(--max); margin: 0 auto; padding: 28px 24px 72px; display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 56px; }
.doc-side { position: sticky; top: 20px; align-self: start; border: var(--edge); background: var(--card); padding: 16px 0 10px; }
.side-h { font-family: var(--display); padding: 0 18px; margin-bottom: 8px; }
.doc-side ol { margin: 0; padding: 0; list-style: none; counter-reset: g; }
.doc-side li { counter-increment: g; }
.doc-side a { display: grid; grid-template-columns: 28px 1fr; padding: 7px 18px; font-size: .92rem; line-height: 1.35; text-decoration: none; }
.doc-side a::before { content: counter(g, decimal-leading-zero); font-weight: 700; color: var(--muted); }
.doc-side a[aria-current="page"] { background: var(--tint); box-shadow: inset 6px 0 0 var(--acc); font-weight: 700; }
.doc-main { max-width: 760px; min-width: 0; }
.doc-head { padding: 14px 0 22px; }
.doc-num { font-family: var(--display); font-size: 1rem; display: inline-block; background: var(--tint); border: 2px solid var(--acc); color: var(--ink); padding: 4px 10px; margin-bottom: 18px; }
.doc-num span { font-family: var(--body); font-weight: 600; }
@media (max-width: 960px) { .doc { grid-template-columns: 1fr; gap: 0; padding: 20px 16px 56px; } .doc-side { display: none; } }
.toc { border: var(--edge); background: var(--tint); padding: 16px 20px; margin: 0 0 34px; }
.toc p { font-weight: 700; margin: 0 0 6px; }
.toc ol { margin: 0; padding-left: 1.3em; columns: 2; column-gap: 30px; }
.toc li { break-inside: avoid; margin: 3px 0; font-size: .95rem; }
@media (max-width: 600px) { .toc ol { columns: 1; } }

.prose { font-size: 1.08rem; }
.prose h2 { margin-top: 1.8em; padding-top: .4em; border-top: 3px solid var(--ink); }
.prose h3 { margin-top: 1.5em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: .35em 0; }
.prose blockquote { margin: 1.5em 0; padding: 14px 20px; border-left: 8px solid var(--acc); background: var(--soft); }
.prose code { font-size: .9em; background: var(--soft); padding: 1px 5px; }
.prose strong { font-weight: 700; }
.tbl { overflow-x: auto; margin: 1.4em 0; border: var(--edge); background: var(--card); }
.tbl table { border-collapse: collapse; width: 100%; font-size: .95rem; }
.tbl caption { text-align: left; padding: 10px 14px; font-weight: 700; border-bottom: 2px solid var(--ink); }
.tbl th, .tbl td { padding: 9px 14px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.tbl thead th { background: var(--soft); font-weight: 700; }
.tbl td { font-variant-numeric: tabular-nums; }
.poster-fig { margin: 2em auto; max-width: 520px; border: var(--edge); box-shadow: var(--shadow); background: var(--card); }
.poster-fig svg { display: block; width: 100%; }
.poster-fig figcaption { border-top: 2px solid var(--ink); padding: 10px 14px; font-size: .92rem; }
.callout { border: var(--edge); background: var(--tint); padding: 16px 20px; margin: 1.6em 0; }
.related { margin-top: 44px; border: var(--edge); padding: 18px 22px; background: var(--card); }
.related h2 { font-size: 1.2rem; }
.related ul { margin: 0; padding-left: 1.2em; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 40px; }
.pager a { display: block; border: var(--edge); background: var(--card); padding: 14px 18px; text-decoration: none; font-weight: 700; line-height: 1.35; }
.pager a:hover { box-shadow: 4px 4px 0 var(--acc); background: var(--card); }
.pager small { display: block; font-weight: 500; color: var(--muted); margin-bottom: 4px; }
.pager .pn { text-align: right; }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pager .pn { text-align: left; } }

/* gallery item */
.piece { display: grid; grid-template-columns: minmax(0, 520px) minmax(0, 1fr); gap: 56px; margin-top: 22px; align-items: start; }
.piece-art { margin: 0; position: sticky; top: 20px; border: var(--edge); box-shadow: var(--shadow); background: var(--card); }
.piece-art svg { display: block; width: 100%; }
.piece-notes { max-width: 680px; min-width: 0; }
.piece-notes h1 { font-size: clamp(1.9rem, 1.3rem + 2vw, 2.7rem); }
.piece-notes > h2 { margin-top: 1.6em; padding-top: .4em; border-top: 3px solid var(--ink); }
.sources { padding-left: 1.2em; }
@media (max-width: 980px) { .piece { grid-template-columns: 1fr; gap: 30px; } .piece-art { position: static; max-width: 560px; } }

.faq-grp { margin-bottom: 36px; }
.note { border-top: var(--edge); padding-top: 18px; color: var(--muted); }
.links404 { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; }
.links404 a { display: block; border: 2px solid var(--ink); padding: 8px 14px; font-weight: 700; text-decoration: none; background: var(--card); }

/* footer */
.foot { background: var(--ink); color: var(--paper); }
.foot a { color: var(--paper); text-decoration-color: var(--lists); }
.foot a:hover { background: none; color: var(--lists); }
.foot-in { max-width: var(--max); margin: 0 auto; padding: 52px 24px 28px; display: grid; grid-template-columns: 1.3fr 1fr .8fr; gap: 40px; }
.foot h2 { font-size: 1rem; letter-spacing: .04em; margin: 0 0 10px; }
.foot h2 + ul + h2, .foot ul + h2 { margin-top: 22px; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin: 5px 0; font-size: .95rem; }
.foot-logo { font-family: var(--display); font-size: 1.8rem; margin-bottom: 8px; }
.foot-brand p { opacity: .9; }
.foot-hist { font-size: .9rem; }
.foot-fine { max-width: var(--max); margin: 0 auto; padding: 16px 24px 30px; font-size: .85rem; opacity: .8; border-top: 1px solid #555; }
@media (max-width: 800px) { .foot-in { grid-template-columns: 1fr; gap: 26px; padding: 40px 16px 20px; } .foot-fine { padding: 16px; } }

/* SVG infographic vocabulary (charts.py) */
.ig text { font-family: var(--body); }
.g-paper { fill: var(--card); }
.g-paper-s { stroke: var(--card); }
.g-ink { fill: var(--ink); }
.g-ink-s { stroke: var(--ink); }
.g-mut { fill: var(--muted); }
.g-rule { stroke: var(--rule); stroke-width: 1.5; }
.g-acc { fill: var(--acc); }
.g-acc-s { stroke: var(--acc); }
.g-acc-t { fill: var(--acc-t); }
.g-tint { fill: var(--tint); }
.g-mid { fill: var(--mid); }
.g-hollow { fill: none; stroke: var(--muted); stroke-width: 1.6; }
.ig .g-disp { font-family: var(--display); }
.ig .g-mono { font-weight: 600; letter-spacing: .02em; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media print { .mast, .foot, .doc-side, .pager { display: none; } body { background: #fff; } }