:root {
  color-scheme: dark;
  --ground: #050000;
  --surface: #130606;
  --alert: #ff5050;
  --red: #ff0000;
  --paper: #e0e0e0;
  --cyan: #00ffff;
  --deep: #330000;
  --muted: #b5a8a8;
  --line: #613232;
  --mono: ui-monospace, 'SFMono-Regular', Menlo, Consolas, 'Liberation Mono', monospace;
  --body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--ground); color: var(--paper); font: 18px/1.65 var(--body); }
body::before { content: ''; position: fixed; inset: 0; background-image: linear-gradient(#ff505008 1px, transparent 1px), linear-gradient(90deg, #ff505008 1px, transparent 1px); background-size: 72px 72px; pointer-events: none; z-index: -1; }
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: .25em; }
a:hover { color: #fff; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--cyan); outline-offset: 5px; }
::selection { background: var(--cyan); color: var(--ground); }
button, input { font: inherit; }
button, a, input { -webkit-tap-highlight-color: #00ffff33; }
button { cursor: pointer; }
h1, h2, h3, p, ul, dl, figure { margin-top: 0; }
h1, h2, h3 { font-family: var(--mono); font-weight: 500; line-height: 1.18; letter-spacing: -.045em; overflow-wrap: anywhere; }
h1 { font-size: clamp(36px, 5vw, 68px); margin-bottom: 1.6rem; max-width: 22ch; }
h2, .section-title { font-size: clamp(26px, 2.5vw, 38px); margin-bottom: 1.2rem; }
h3 { font-size: 25px; margin-bottom: 1rem; }
p { margin-bottom: 1.15rem; }
ul { padding-left: 1.3rem; }
li { padding-left: .3rem; margin-bottom: .65rem; }
li::marker { color: var(--alert); }
[hidden] { display: none !important; }
.skip-link { position: absolute; top: 8px; left: 8px; z-index: 10; padding: 12px 18px; min-height: 44px; background: var(--cyan); color: var(--ground); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.site-header, main, .site-footer { width: min(1280px, calc(100% - 96px)); margin-inline: auto; }
.masthead { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-block: 25px 20px; border-bottom: 1px solid var(--line); }
.site-name { display: inline-flex; align-items: center; gap: 14px; font: 20px/1.3 var(--mono); letter-spacing: -.04em; color: var(--paper); text-decoration: none; min-height: 44px; }
.desk-mark { width: 27px; height: 24px; border: 1px solid var(--alert); box-shadow: 4px 4px 0 var(--red), inset 7px 0 0 var(--alert); position: relative; }
.desk-mark::after { content: ''; position: absolute; top: 6px; left: 10px; width: 18px; height: 2px; background: var(--cyan); }
.guide-label { margin: 0; color: var(--muted); font: 16px/1.5 var(--mono); }
.question-tabs { display: grid; grid-template-columns: .85fr 1fr 1.5fr 1.35fr 1.25fr 1.5fr; margin-top: 18px; gap: 3px; }
.question-tab { display: flex; align-items: center; justify-content: center; padding: 14px 10px; min-height: 60px; background: #1c0909; border: 1px solid var(--line); color: var(--muted); text-decoration: none; font: 16px/1.4 var(--mono); text-align: center; }
.question-tab.selected { color: var(--cyan); border-color: var(--cyan); background: #041515; box-shadow: inset 0 -3px 0 var(--cyan); }
.question-tab:hover { background: var(--deep); color: var(--paper); }
.eyebrow, .card-label { font: 16px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .065em; color: var(--alert); }
.eyebrow { margin-bottom: 1.5rem; }
.card-label { margin-bottom: .9rem; }
.welcome-opener { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; padding-block: 62px 56px; align-items: stretch; }
.welcome-copy { padding-block: 12px; }
.welcome h1 { font-size: clamp(42px, 5.2vw, 75px); max-width: 13ch; text-shadow: 2px 0 #ff505032; }
.hero-note { font: 23px/1.4 Georgia, 'Times New Roman', serif; color: var(--alert); margin-block: 1.4rem; }
.opener { max-width: 65ch; font-size: 20px; line-height: 1.65; color: var(--paper); }
.opener-links { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 2.2rem; }
.button-link, .quiet-link, .text-link, .source-link, .back-link { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding-block: 10px; font-size: 17px; }
.button-link { background: var(--cyan); color: var(--ground); font: 17px/1.5 var(--mono); padding: 15px 19px; text-decoration: none; border: 1px solid var(--cyan); }
.button-link:hover { background: var(--paper); color: var(--ground); }
.quiet-link { font-family: var(--mono); color: var(--paper); }
.atmosphere { margin: 0; position: relative; overflow: hidden; min-height: 310px; background: radial-gradient(ellipse at 74% 36%, #006868, transparent 24%), linear-gradient(135deg, #160505, #330000 70%, #070000); border: 1px solid var(--line); isolation: isolate; }
.welcome-opener .atmosphere { min-height: 490px; }
.atmosphere::before { content: ''; position: absolute; inset: 0; z-index: 2; background: repeating-linear-gradient(transparent 0, transparent 3px, #05000018 4px); pointer-events: none; }
.atmosphere::after { content: ''; position: absolute; inset: 12px; border: 1px solid #ff505045; border-top-color: #00ffff70; pointer-events: none; z-index: 2; }
.atmosphere img { display: block; position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; font-size: 0; color: transparent; }
.atmosphere figcaption { position: absolute; bottom: 0; left: 0; right: 0; z-index: 3; padding: 35px 24px 22px; font: 16px/1.5 var(--mono); color: var(--paper); background: var(--ground); }
.wire-room { position: absolute; inset: 18%; border: 1px solid #ff505066; transform: perspective(400px) rotateY(-12deg); }
.wire-room::before { content: ''; position: absolute; inset: -80%; background: repeating-linear-gradient(90deg, transparent 0, transparent 49px, #ff505020 50px), repeating-linear-gradient(0deg, transparent 0, transparent 49px, #ff505020 50px); transform: perspective(280px) rotateX(65deg); }
.wire-room::after { content: ''; position: absolute; inset: 27%; border: 1px solid #00ffff88; box-shadow: 0 0 30px #00ffff33; }
.section-heading { max-width: 66ch; margin-bottom: 30px; }
.starting-points { border-top: 1px solid var(--alert); padding-top: 42px; }
.answer-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.evidence-card { padding: 28px; background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--alert); margin-bottom: 28px; }
.evidence-card > .evidence-title { font-size: 25px; margin-bottom: 1rem; letter-spacing: -.03em; }
.evidence-card p { max-width: 62ch; font-size: 18px; }
.evidence-card .card-label { font-size: 16px; }
.source-link { font-family: var(--mono); font-size: 16px; line-height: 1.5; max-width: 100%; padding-block: 12px; overflow-wrap: anywhere; }
.chapter-directory { padding-top: 42px; }
.directory-group { margin-bottom: 42px; }
.directory-group > h3 { font-size: 21px; color: var(--muted); padding-bottom: 15px; border-bottom: 1px solid var(--line); }
.desk-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.desk-link { display: grid; grid-template-columns: 1fr auto; gap: 14px; min-height: 145px; text-decoration: none; padding: 24px; border: 1px solid var(--line); background: #0e0404; color: var(--paper); }
.desk-link:hover { border-color: var(--cyan); background: #031010; }
.desk-link .card-label { grid-column: 1 / -1; margin-bottom: 0; }
.desk-question { font: 21px/1.35 var(--mono); letter-spacing: -.03em; }
.desk-arrow { color: var(--cyan); font-size: 23px; }
.recap { padding: 28px 30px; border-left: 4px solid var(--cyan); border-block: 1px solid var(--line); background: #041111; margin-block: 36px 52px; max-width: 100%; }
.recap .card-label { color: var(--cyan); }
.recap > p:last-child { font: 22px/1.6 Georgia, 'Times New Roman', serif; margin: 0; max-width: 65ch; }
.chapter-opener { padding-block: 44px 40px; border-bottom: 1px solid var(--line); }
.back-link { color: var(--muted); font: 16px/1.5 var(--mono); margin-bottom: 28px; padding-block: 12px; }
.chapter-opener .eyebrow { margin-bottom: 18px; }
.chapter-opener h1 { max-width: 24ch; }
.chapter-opener .opener { max-width: 66ch; margin-bottom: 0; }
.chapter-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 80px; padding-top: 48px; align-items: start; }
.chapter-shelf { position: sticky; top: 25px; }
.chapter-shelf .card-label { color: var(--muted); }
.chapter-shelf nav { display: flex; flex-direction: column; }
.chapter-shelf a { font: 16px/1.5 var(--mono); color: var(--muted); text-decoration: none; min-height: 44px; padding: 10px 12px; border-left: 1px solid var(--line); }
.chapter-shelf a:hover { color: var(--cyan); }
.chapter-shelf a[aria-current] { color: var(--cyan); border-left: 3px solid var(--cyan); background: #041111; }
.chapter-reading { min-width: 0; max-width: 760px; }
.chapter-section { margin-bottom: 38px; }
.chapter-reading > p, .chapter-topic > p, .chapter-section p { max-width: 62ch; }
.chapter-reading .atmosphere { margin-bottom: 42px; aspect-ratio: 1216 / 768; min-height: 0; }
.question-sheet { padding: 28px; border: 1px solid var(--line); border-left-color: var(--alert); background: #160909; }
.question-sheet > .section-title { font-size: 28px; }
.question-sheet ul { margin-bottom: 0; }
.chapter-turns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding-block: 25px 55px; border-top: 1px solid var(--line); }
.chapter-turns a { display: flex; flex-direction: column; gap: 6px; font: 18px/1.5 var(--mono); min-height: 75px; text-decoration: none; }
.chapter-turns a:last-child { text-align: right; }
.chapter-turns .card-label { color: var(--muted); margin: 0; font-size: 16px; }
.glossary-controls { background: var(--surface); border: 1px solid var(--line); padding: 28px; margin-bottom: 35px; }
.glossary-controls label { display: block; font: 20px/1.5 var(--mono); margin-bottom: 14px; }
.search-row { display: flex; gap: 12px; }
.search-row input { min-width: 0; width: 100%; min-height: 52px; padding: 12px; border: 1px solid var(--muted); border-radius: 0; background: var(--ground); color: var(--paper); }
.search-row input::placeholder { color: var(--muted); opacity: 1; }
.search-row button { min-height: 52px; flex-shrink: 0; border: 1px solid var(--cyan); background: #041111; color: var(--cyan); padding: 12px 16px; border-radius: 0; font: 16px/1.5 var(--mono); }
.search-status { color: var(--muted); font-size: 16px; margin-block: 18px 0; }
.word-entry { padding: 24px 0; border-bottom: 1px solid var(--line); }
.word-entry dt { color: var(--alert); font: 24px/1.35 var(--mono); margin-bottom: 13px; }
.word-entry dd { margin: 0; }
.word-entry p { margin-bottom: 0; }
.empty-search { padding: 24px; background: var(--deep); border: 1px solid var(--alert); }
.site-footer { border-top: 1px solid var(--alert); margin-top: 35px; padding-block: 38px 42px; }
.footer-top { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.footer-title { font: 24px/1.5 var(--mono); letter-spacing: -.04em; margin: 0; }
.quiet-cursor { color: var(--cyan); display: inline-block; margin-left: 8px; animation: cursor-rest 9s steps(1, end) infinite; }
@keyframes cursor-rest { 0%, 52%, 60%, 78%, 84%, 100% { opacity: 1; } 53%, 59%, 79%, 83% { opacity: .25; } }
.site-footer nav { display: flex; flex-wrap: wrap; column-gap: 22px; }
.site-footer nav a { font-size: 16px; min-height: 48px; }
.site-footer > p { font-size: 16px; color: var(--muted); max-width: 75ch; margin-block: 28px 0; }
@media (max-width: 1080px) {
  .site-header, main, .site-footer { width: calc(100% - 64px); }
  .question-tabs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .welcome-opener { gap: 32px; }
  .chapter-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 40px; }
  .answer-grid { grid-template-columns: 1fr; }
  .answer-grid .evidence-card { margin-bottom: 0; }
  .desk-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 700px) {
  body { font-size: 18px; }
  .site-header, main, .site-footer { width: calc(100% - 40px); }
  .masthead { align-items: flex-start; flex-direction: column; gap: 6px; padding-block: 18px 16px; }
  .guide-label { padding-left: 41px; }
  .question-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; margin-top: 14px; }
  .question-tab { font-size: 16px; min-height: 58px; padding: 12px 9px; }
  .welcome-opener { grid-template-columns: 1fr; gap: 30px; padding-block: 40px 42px; }
  .welcome-copy { padding: 0; }
  .welcome h1 { font-size: clamp(40px, 10vw, 65px); max-width: 15ch; }
  .opener { font-size: 19px; }
  .welcome-opener .atmosphere { min-height: 310px; }
  .hero-note { font-size: 22px; }
  .opener-links { gap: 8px 18px; margin-top: 24px; }
  .button-link { width: 100%; justify-content: space-between; }
  .starting-points { padding-top: 30px; }
  .evidence-card { padding: 24px 21px; }
  .desk-grid { grid-template-columns: 1fr; }
  .desk-link { padding: 22px; min-height: 132px; }
  .chapter-opener { padding-block: 30px; }
  .chapter-opener h1 { font-size: 37px; }
  .back-link { margin-bottom: 18px; }
  .chapter-layout { grid-template-columns: 1fr; gap: 0; padding-top: 35px; }
  .chapter-shelf { position: static; order: 2; margin-block: 5px 30px; padding-top: 25px; border-top: 1px solid var(--line); }
  .chapter-shelf nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chapter-shelf a { padding: 12px 10px; }
  .question-sheet, .glossary-controls { padding: 23px 20px; }
  .question-sheet > .section-title { font-size: 25px; }
  .chapter-section { margin-bottom: 30px; }
  .recap { padding: 24px 22px; margin-block: 28px 35px; }
  .recap > p:last-child { font-size: 21px; }
  .chapter-turns { gap: 14px; padding-bottom: 30px; }
  .chapter-turns a { font-size: 17px; }
  .search-row { flex-direction: column; }
  .search-row button { align-self: flex-start; }
  .chapter-reading .atmosphere { min-height: 250px; }
  .site-footer { margin-top: 20px; padding-block: 28px 35px; }
  .site-footer nav { column-gap: 18px; }
  .footer-title { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  :root { color-scheme: light; }
  body { background: white; color: #111; font-size: 17px; }
  .site-header, main, .site-footer { width: 100%; }
  .question-tabs, .chapter-shelf, .atmosphere, .chapter-turns, .glossary-controls, .site-footer nav, .back-link { display: none; }
  .chapter-layout { display: block; padding-top: 20px; }
  .chapter-reading { max-width: none; }
  .chapter-opener { padding-top: 0; }
  .welcome-opener, .answer-grid, .desk-grid { display: block; }
  .evidence-card, .question-sheet, .recap { background: white; border-color: #555; break-inside: avoid; }
  a, .eyebrow, .card-label, .recap .card-label, .opener, .guide-label, .site-footer > p { color: #222; }
  .site-footer { border-color: #555; }
  .word-entry[hidden] { display: block !important; }
}