.outlook {
  --line: #b9b5a7;
  --quiet: #56594e;
  --print: #403f34;
  --copper: #753b29;
  --serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --wrap: 1376px;
}
.outlook :is(button,summary,a):focus-visible { outline: 2px solid var(--copper); outline-offset: 4px; }
.outlook button { font: inherit; color: inherit; cursor: pointer; }
.outlook [hidden] { display: none !important; }
.skip { position: fixed; top: 12px; left: 12px; z-index: 20; padding: 12px; background: var(--ink); color: var(--paper); transform: translateY(-160%); }
.skip:focus { transform: none; }
.outlook .masthead, .cover, .bar-inner, .reading-grid, .outlook-footer { max-width: var(--wrap); margin-inline: auto; }
.outlook .chrome { padding-inline: 5%; }
.cover, .bar-inner, .reading-grid, .outlook-footer { width: 90%; }
.folio, .time, .plate-head, .read-status, .returns, .note-no { font: 500 11px/1.45 var(--mono); }
.folio { text-transform: uppercase; letter-spacing: .10em; }
.edition { display: flex; justify-content: space-between; align-items: center; gap: 1em; padding: 13px 0; border-block: 1px solid var(--ink); color: var(--quiet); }
.edition-title { color: var(--copper); display: flex; align-items: center; gap: 10px; font-weight: 700; }
.edition-title::before { content: ''; width: 17px; height: 9px; border-block: 1px solid currentColor; background: linear-gradient(transparent 44%, currentColor 44% 56%, transparent 56%); }
.cover-grid { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 6%; padding-block: 48px 54px; }
.cover-type { min-width: 0; }
.cover h1 { margin: 0; font: 400 92px/.95 var(--serif); letter-spacing: -.065em; }
.cover h1 em { color: var(--copper); font-weight: 400; }
.dek { max-width: 33em; margin: 26px 0 0; color: var(--print); font: 18px/1.55 var(--serif); }
.cover-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin-top: 30px; }
.read { display: inline-flex; align-items: center; gap: 24px; min-height: 44px; padding: 0 15px; background: var(--ink); color: #faf5e9; font: 700 12px Comfortaa, var(--sans); }
.read:hover { background: var(--copper); }
.read span { font: 18px var(--sans); }
.time { color: var(--quiet); }
.plate { margin: 0; min-width: 0; position: relative; }
.plate-head { display: flex; align-items: center; justify-content: space-between; border-block: 1px solid var(--line); padding-block: 9px; color: var(--quiet); }
.plate-head .folio { color: var(--copper); }
.drawing { background: #e8e5d7; overflow: hidden; }
.machine { width: 100%; display: block; max-height: 391px; }
.machine path { stroke-linejoin: round; stroke-linecap: round; }
.plate-face, .plate-edge { stroke: #4b4d40; stroke-width: 1.05; }
.plate-edge { fill: #9a987f; }
.inset, .rib, .rib-light, .hatch, .register, .leader, .guide { fill: none; }
.inset { stroke: #726f5b; stroke-width: .6; }
.rib { stroke: #585748; stroke-width: 1.1; }
.rib-light { stroke: #f0ead9; stroke-width: .8; }
.hatch { stroke: #7e826f; stroke-width: .6; }
.port { fill: #696d5b; stroke: #43463d; stroke-width: .7; }
.port-ring { fill: #d0cbb6; stroke: #5a594d; stroke-width: .7; }
.guide { stroke: #915841; stroke-width: .9; stroke-dasharray: 3 5; }
.register { stroke: #918f7c; stroke-width: .8; }
.leader { stroke: #7b503d; stroke-width: .85; }
.origin,.call-letter { fill: var(--copper); }
.call-letter { font: 11px var(--mono); }
.plate-key { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 8px; color: #525747; padding: 8px 12px; background: #e8e5d7; border-block-end: 1px solid var(--line); font-size: 10px; }
.stage-controls { display: flex; margin-top: 12px; gap: 5px; }
.stage-controls button { background: transparent; border: 1px solid var(--line); flex: 1; min-width: 0; display: flex; align-items: center; justify-content: center; gap: 7px; min-height: 44px; padding: 5px; font: 600 12px var(--sans); }
.stage-controls small { font: 10px var(--mono); opacity: .82; }
.stage-controls button:hover { border-color: var(--copper); }
.stage-controls button[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.stage-note { min-height: 3.6em; }
.stage-note p { font: 14px/1.48 var(--serif); color: var(--print); margin: 12px 0 0; max-width: 40em; }
.motion-toggle { display: inline-flex; gap: 6px; align-items: center; padding: 2px 0; border: 0; background: transparent; color: var(--quiet) !important; min-height: 26px; font: 10px var(--mono) !important; }
.motion-toggle:hover { text-decoration: underline; text-underline-offset: 3px; }
.motion-symbol { width: 1.2em; }
.plate .component { transition: transform .55s ease; }
.plate[data-view="experiment"] .component-design { transform: translateY(-11px); }
.plate[data-view="experiment"] .component-trial .plate-face { fill: #d2af8d; }
.plate[data-view="deployment"] .component-design { transform: translateY(27px); }
.plate[data-view="deployment"] .component-assembly { transform: translateY(-12px); }
.plate[data-view="deployment"] .component-trial { transform: translateY(4px); }
.plate[data-view="deployment"] .component-assembly .plate-face { fill: #a8af91; }
.plate.is-playing .guide { animation: axis-flow 3s linear infinite; }
@keyframes axis-flow { to { stroke-dashoffset: -24; } }
.reader-bar { position: sticky; top: 0; z-index: 4; background: var(--paper); border-block: 1px solid var(--line); }
.bar-inner { display: flex; gap: 15px; align-items: center; justify-content: space-between; min-height: 48px; }
.bar-title { font: 15px var(--serif); }
.bar-title i { color: var(--copper); }
.contents-pop { position: relative; margin-left: auto; }
.contents-pop summary { display: flex; gap: 10px; align-items: center; min-height: 44px; cursor: pointer; list-style: none; font: 12px var(--sans); }
.contents-pop summary::-webkit-details-marker { display: none; }
.contents-pop summary:hover { color: var(--copper); }
.chevron { font-size: 16px; }
.contents-pop[open] .chevron { transform: rotate(180deg); }
.current { color: var(--quiet); }
.current:not(:empty)::before { content: '/ '; }
.contents-pop nav { position: absolute; right: 0; top: 100%; min-width: 210px; max-height: 65vh; overflow: auto; background: var(--paper); border: 1px solid var(--line); box-shadow: 0 12px 20px #292d291a; padding: 12px 16px; }
.read-status { text-align: right; min-width: 6.8em; color: var(--quiet); }
html:not(.outlook-ready) .read-status { display: none; }
.progress { position: absolute; bottom: -1px; left: 0; right: 0; height: 2px; background: var(--copper); transform-origin: left; transform: scaleX(var(--portion,0)); }
.reading-grid { display: grid; grid-template-columns: minmax(140px, 1fr) minmax(0, 660px) minmax(0, .65fr); gap: 5%; align-items: start; }
.rail { position: sticky; top: 84px; margin-top: 67px; }
.rail .folio { margin: 0 0 14px; color: var(--quiet); }
:is(.rail,.contents-pop) ol { margin: 0; padding: 0; list-style: none; }
:is(.rail,.contents-pop) nav a { display: flex; gap: 12px; align-items: center; min-height: 30px; color: var(--quiet); font: 13px/1.35 var(--sans); border-left: 2px solid transparent; padding-left: 8px; }
:is(.rail,.contents-pop) nav a span { min-width: 2ch; font: 10px var(--mono); }
:is(.rail,.contents-pop) nav a:is(:hover,[aria-current="location"]) { color: var(--copper); }
:is(.rail,.contents-pop) nav a[aria-current="location"] { border-color: var(--copper); font-weight: 700; }
.article-flow { min-width: 0; }
.story-image { margin: 44px 0 4px; scroll-margin-top: 68px; }
.story-image img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #e8e5d7; }
.story-image figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 18px; padding-top: 12px; border-top: 1px solid var(--line); margin-top: 10px; color: var(--quiet); font: 14px/1.45 var(--serif); }
.story-image .folio { color: var(--copper); font-size: 10px; }
@media(min-width:1200px) { .story-image { width: calc(100% + 96px); } }
@media print { .story-image { width: 100%; margin-block: 16pt; break-inside: avoid; } .story-image figcaption { font-size: 9pt; } }
.chapter { scroll-margin-top: 68px; padding: 65px 0 0; }
.chapter:last-child { padding-bottom: 50px; }
.overline { display: flex; align-items: center; gap: 16px; color: var(--copper); }
.overline::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.chapter h2 { margin: 17px 0 29px; color: var(--ink); font: 400 43px/1.08 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.chapter p { margin: 0 0 18px; font: 19px/1.66 var(--serif); }
.opening > p:first-of-type { margin: 22px 0 23px; font: 34px/1.2 var(--serif); letter-spacing: -.025em; max-width: 24ch; }
.chapter .thesis { margin: 38px 0 6px; padding: 25px 0 6px 23px; border-left: 3px solid var(--copper); }
.thesis .folio { color: var(--copper); }
.chapter .thesis p { margin: 11px 0 14px; font: italic 26px/1.37 var(--serif); color: var(--print); }
.note-ref { font: 700 .58em/0 var(--sans); vertical-align: super; }
.note-ref a { padding: .35em .24em; color: var(--copper); text-decoration: underline; text-underline-offset: 2px; scroll-margin-top: 85px; }
.chapter:has(+ #sources) > p:last-of-type { font-style: italic; color: var(--copper); font-size: 32px; line-height: 1.3; margin-top: 24px; }
.notes-list { list-style: none; padding: 0; margin: 21px 0; border-top: 1px solid var(--line); }
.notes-list li { display: grid; grid-template-columns: 2.1em 1fr; gap: 10px; padding: 17px 0; border-bottom: 1px solid var(--line); font: 15px/1.56 var(--serif); scroll-margin-top: 74px; }
.note-no { color: var(--copper); padding-top: .3em; }
.notes-list a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: #a28c79; }
.notes-list a:hover { color: var(--copper); }
.notes-list :target, .note-ref a:target { background: #e6d9c5; }
.returns a { color: var(--copper); display: inline-block; padding: .3em; }
.chapter p.source-preface { font-size: 16px; color: var(--quiet); }
.outlook-footer { border-top: 1px solid var(--ink); display: flex; gap: 20px; justify-content: space-between; align-items: center; padding-block: 20px 35px; }
.outlook-footer > a:last-child { font: 12px var(--mono); min-height: 44px; display: flex; align-items: center; }
@media(min-width:1450px) { .cover h1 { font-size: 108px; } .machine { max-height: 437px; } }
@media(max-width:1100px) {
  .cover-grid { gap: 5%; }
  .cover h1 { font-size: 75px; }
  .reading-grid { grid-template-columns: 150px minmax(0,650px); justify-content: center; gap: 5%; }
}
@media(max-width:850px) {
  .cover-grid { gap: 4%; padding-block: 36px 38px; }
  .cover h1 { font-size: 64px; }
  .dek { font-size: 17px; }
  .stage-controls button { gap: 4px; }
  .stage-controls small { display: none; }
  .rail { display: none; }
  .reading-grid { display: block; max-width: 650px; }
}
@media(pointer:coarse), (max-width:670px) {
  .motion-toggle { min-height: 44px; }
}
@media(max-width:670px) {
  .cover-grid { grid-template-columns: 1fr; gap: 32px; padding-top: 32px; }
  .cover h1 { font-size: 74px; }
  .dek { margin-top: 19px; max-width: 34em; }
  .cover-actions { margin-top: 20px; }
  .machine { max-height: 350px; }
  .stage-controls small { display: inline; }
  .stage-note { min-height: 3.1em; }
  .reader-bar .bar-title { display: none; }
  .contents-pop { margin: 0; }
  .contents-pop nav { left: 0; right: auto; }
  .chapter { padding-top: 43px; }
  .chapter h2 { font-size: 36px; margin-bottom: 20px; }
  .chapter p { font-size: 18px; line-height: 1.6; }
  .opening > p:first-of-type { font-size: 26px; }
  .chapter .thesis p { font-size: 23px; }
}
@media(max-width:400px) {
  .cover h1 { font-size: 63px; }
  .folio { font-size: 10px; }
  .edition { gap: 6px; }
  .edition-title { gap: 7px; }
  .stage-controls button { font-size: 11px; }
}
@media(min-width:671px) and (max-width:760px) { .cover h1 { font-size: 58px; } }
@media(prefers-reduced-motion:no-preference) {
  .chapter.entered .overline::after { animation: reveal-rule .65s ease-out both; transform-origin: left; }
  @keyframes reveal-rule { from { transform: scaleX(.14); } }
}
@media(prefers-reduced-motion:reduce) {
  .plate .component { transition: none; }
  .plate .guide { animation: none !important; }
}
@media print {
  .outlook { --paper: #fff; --ink: #111; background: #fff; }
  .chrome,.skip,.reader-bar,.rail,.motion-toggle,.stage-controls,.cover-actions,.outlook-footer,.returns { display: none !important; }
  .cover,.reading-grid { width: 100%; display: block; }
  .cover-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4%; padding-block: 24px; }
  .cover h1 { font-size: 42pt; }
  .dek { font-size: 12pt; }
  .machine { max-height: 190px; }
  .stage-note p { font-size: 10pt; }
  .chapter { padding-top: 18pt; }
  .chapter h2 { font-size: 22pt; break-after: avoid; }
  .overline { break-after: avoid; }
  .chapter p,.chapter p.source-preface { font: 11pt/1.45 var(--serif); orphans: 3; widows: 3; }
  .chapter .thesis,.notes-list li,.plate { break-inside: avoid; }
  .chapter .thesis p,.opening > p:first-of-type { font-size: 15pt; }
  .notes-list li { font-size: 9pt; }
  .notes-list a[href^="https"]::after { content: ' (' attr(href) ')'; overflow-wrap: anywhere; font: 8pt var(--sans); }
}

/* The series frontispiece and the paired contents of this edition. */
.guide-heading { display: grid; grid-template-columns: minmax(0, 2fr) minmax(200px, .75fr); align-items: end; gap: 5%; padding-block: 44px 38px; }
.guide-heading .folio { margin: 0 0 18px; color: var(--copper); }
.guide-heading h1 { font-size: 78px; line-height: 1; letter-spacing: -.06em; }
.guide-intro { margin: 0 0 4px; max-width: 24em; font: 21px/1.48 var(--serif); color: var(--print); }
.essay-pair { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 3%; padding-bottom: 52px; }
.essay-entry { min-width: 0; border-top: 1px solid var(--ink); }
.entry-link { display: flex; flex-direction: column; height: 100%; }
.entry-art { position: relative; height: 198px; overflow: hidden; background: #e6e2d3; border-bottom: 1px solid var(--line); }
.entry-art.factory { background: #e3e4d6; }
.entry-art img { object-fit: contain; width: 100%; height: 100%; }
.entry-art.exchanger img { transform: scale(1.08); }
.entry-art.factory img { transform: scale(1.10); }
.entry-folio { position: absolute; bottom: 10px; left: 12px; color: var(--quiet); }
.entry-meta, .essay-meta { display: flex; align-items: center; flex-wrap: wrap; gap: .5em 1.2em; }
.entry-meta { justify-content: space-between; color: var(--quiet); margin-block: 14px 8px; }
.entry-meta > :first-child { color: var(--copper); }
.essay-entry h2 { margin: 0 0 10px; font: 400 40px/1.1 var(--serif); letter-spacing: -.045em; }
.essay-entry p { margin: 0 0 18px; max-width: 37em; font: 17px/1.52 var(--serif); color: var(--print); }
.entry-read, .guide-link { width: fit-content; margin-top: auto; padding-block: 9px; color: var(--copper); font: 700 12px Comfortaa,var(--sans); }
.entry-read span { margin-left: .5em; }
.entry-link:is(:hover,:focus-visible) h2, .companion a:hover { color: var(--copper); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .15em; }
.landing-nav a[aria-current="location"] { text-decoration: underline; text-underline-offset: 6px; }
.edition-title a:hover, .guide-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.essay-meta { margin-top: 23px; font: 11px/1.7 var(--mono); color: var(--quiet); }
.essay-meta > :first-child { color: var(--copper); }
.essay-meta > :not(:first-child)::before { content: '·'; margin-right: 1em; }
.plate[data-view="supply"] .site-part.supply,
.plate[data-view="connection"] .site-part.connection,
.plate[data-view="works"] .site-part.works { filter: drop-shadow(0 1px 1.8px #753b298f); }
.site-part { transition: opacity .25s; }
.factory-plate[data-view="connection"] :is(.supply,.works),
.factory-plate[data-view="works"] :is(.supply,.connection) { opacity: .48; }
.stage-note p { min-height: 3em; }
.opening > p:first-of-type { font-size: 27px; line-height: 1.4; max-width: none; }
.article-flow .chapter:last-child { padding-bottom: 12px; }
.companion { width: 90%; max-width: var(--wrap); margin: 36px auto; padding: 25px 0 0; border-top: 1px solid var(--line); }
.companion .folio { color: var(--quiet); }
.companion > a { display: block; width: fit-content; }
.companion > a:first-of-type { font: 35px/1.2 var(--serif); letter-spacing: -.035em; margin-block: 8px; }
.companion > a:first-of-type span { font: 20px var(--sans); color: var(--copper); }
.contents-pop nav { max-width: calc(100vw - 32px); }
@media(min-width:1450px) { .guide-heading h1 { font-size: 94px; } .entry-art { height: 220px; } }
@media(max-width:1000px) { .guide-heading h1 { font-size: 66px; } .guide-intro { font-size: 18px; } .entry-art { height: 160px; } }
@media(max-width:670px) {
  .guide-heading { grid-template-columns: 1fr; padding-block: 30px 26px; gap: 20px; }
  .guide-heading h1 { font-size: 51px; }
  .guide-intro { max-width: 28em; }
  .essay-pair { grid-template-columns: 1fr; gap: 25px; padding-bottom: 32px; }
  .entry-art { height: 156px; }
  .essay-entry h2 { font-size: 33px; }
  .essay-entry p { margin-bottom: 7px; }
  .essay-meta { gap: .3em .65em; margin-top: 16px; }
  .essay-meta > :not(:first-child)::before { margin-right: .65em; }
  .opening > p:first-of-type { font-size: 24px; }
  .contents-pop .current { max-width: 10em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .companion > a:first-of-type { font-size: 29px; }
}
@media(max-width:360px) {
  .guide-heading h1 { font-size: 44px; }
  .contents-pop .current { max-width: 7em; }
}
@media(prefers-reduced-motion:reduce) { .site-part { transition: none; } }
@media print {
  .guide-heading h1 { font-size: 40pt; }
  .guide-heading { padding-block: 16pt; }
  .guide-intro, .essay-entry p { font-size: 11pt; }
  .essay-entry h2 { font-size: 20pt; }
  .entry-art { height: 100pt; }
  .companion, .entry-read { display: none; }
  .opening > p:first-of-type { font-size: 15pt; }
  .stage-note p { min-height: 0; }
}