/* One stylesheet, no scripts, nothing loaded from elsewhere.
   Editorial monograph layout: readable prose measure, booktabs tables,
   quiet evidence tags, light/dark system schemes, and print support. */

:root {
  --bg: #faf8f4;
  --surface: #f1eee6;
  --surface-2: #e7e3d8;
  --text: #1c1b18;
  --muted: #5c5850;
  --rule: #d8d3c8;
  --rule-strong: #9c9689;
  --accent: #1b4f68;
  --accent-soft: #e6eff3;
  --quote: #8c6d23;
  --measure: 44rem;
  --head: 3rem;
  --serif: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141619;
    --surface: #1c1f24;
    --surface-2: #262a31;
    --text: #e4e0d8;
    --muted: #9e998e;
    --rule: #2e333b;
    --rule-strong: #555c68;
    --accent: #7ab3ce;
    --accent-soft: #1b2b34;
    --quote: #c4a352;
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  font-size: clamp(100%, 95% + 0.2vw, 110%);
  scroll-padding-top: calc(var(--head) + 1rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1.03125rem/1.68 var(--serif);
  overflow-x: clip;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}
a:hover { text-decoration-thickness: 2px; }

.skip { position: absolute; left: -999rem; }
.skip:focus {
  left: 1rem; top: 0.5rem; z-index: 20;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--rule-strong);
  padding: 0.4rem 0.7rem;
  font-family: var(--sans); font-size: 0.875rem;
}

/* Header and footer */
header.site, footer.site {
  font-family: var(--sans);
  font-size: 0.9rem;
  padding-inline: max(1rem, calc((100vw - 82rem) / 2 + clamp(1rem, 3vw, 2.5rem)));
}

header.site {
  min-height: var(--head);
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.55rem;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}

@media (min-width: 48rem) {
  header.site {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

header.site .name {
  font-weight: 680;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.005em;
  white-space: nowrap;
}

header.site nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.15rem;
}

header.site nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

header.site nav a:hover { color: var(--text); }
header.site nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 550;
  border-bottom-color: var(--accent);
}

@media (max-width: 30rem) {
  header.site { font-size: 0.84rem; gap: 0.25rem 0.75rem; }
  header.site nav { font-size: 0.8rem; gap: 0.1rem 0.62rem; }
}

footer.site {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
  padding-block: 1.25rem 1.75rem;
  margin-top: 3.5rem;
}
footer.site p { margin: 0; }

/* Page grid */
.layout {
  max-width: 82rem;
  margin: 0 auto;
  padding-inline: clamp(1rem, 3vw, 2.5rem);
}

main {
  min-width: 0;
  padding: 1.5rem 0 1rem;
}
main > * { max-width: var(--measure); }
main > .table, main > pre { max-width: 100%; }
/* a small table keeps the width of the text; only a wide one takes the room beside it */
main > .table { width: fit-content; min-width: min(100%, var(--measure)); }

aside nav.toc { display: none; }
aside details.toc {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.55rem 0.85rem;
  margin: 0.9rem 0 0.25rem;
}

@media (min-width: 62rem) {
  .layout {
    display: grid;
    grid-template-columns: 16.5rem minmax(0, 1fr);
    gap: clamp(2.25rem, 4vw, 4rem);
    align-items: start;
  }
  aside {
    position: sticky;
    top: var(--head);
    max-height: calc(100vh - var(--head));
    overflow-y: auto;
    padding: 1.75rem 0.6rem 2.5rem 0;
    scrollbar-width: thin;
    scrollbar-color: var(--rule) transparent;
  }
  aside nav.toc { display: block; }
  aside details.toc { display: none; }
  main { padding-top: 1.75rem; }
}

/* Sidebar contents */
.toc {
  font-family: var(--sans);
  font-size: 0.84rem;
  line-height: 1.42;
}
.toc summary, .toc .label, .part {
  font: 680 0.69rem/1.3 var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.toc summary { cursor: pointer; user-select: none; }
.toc .label { margin: 0 0 0.7rem; }
.toc .part { margin: 1.25rem 0 0.35rem; color: var(--accent); }
.toc .label + .part, .toc summary + .part { margin-top: 0.65rem; }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc ol ol {
  padding-left: 0.8rem;
  margin: 0.2rem 0 0.45rem;
  border-left: 1px solid var(--rule);
}
.toc li { margin: 0.3rem 0; }
.toc ol ol li { margin: 0.2rem 0; }
.toc a { color: var(--muted); text-decoration: none; display: inline-block; }
.toc a:hover { color: var(--accent); text-decoration: underline; }

/* The six-part index at the top of the full report */
.parts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem 2rem;
  margin: 1.75rem 0 2.25rem;
  padding: 1.15rem 0;
  border-top: 2px solid var(--rule-strong);
  border-bottom: 2px solid var(--rule-strong);
}

@media (min-width: 42rem) {
  .parts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.35rem 2.25rem;
  }
}

.parts section {
  font-family: var(--sans);
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule);
}
.parts section:first-child { border-top: 0; padding-top: 0; }
@media (min-width: 42rem) {
  .parts section:nth-child(-n+2) { border-top: 0; padding-top: 0; }
}

.parts .part { margin: 0; color: var(--accent); }
.parts h3 { margin: 0.15rem 0 0.3rem; font-size: 1rem; font-weight: 650; }
.parts p { margin: 0 0 0.45rem; font-size: 0.83rem; line-height: 1.45; color: var(--muted); }
.parts ul { list-style: none; margin: 0; padding: 0; font-size: 0.84rem; line-height: 1.42; }
.parts li { margin: 0.2rem 0; }
.parts a { text-decoration: none; }
.parts a:hover { text-decoration: underline; }

/* Prose and headings */
h1, h2, h3 {
  font-family: var(--sans);
  line-height: 1.24;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(1.6rem, 1.3rem + 1.25vw, 2.2rem);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.018em;
  margin: 0.2rem 0 0.75rem;
}

h1 + p:has(> em) {
  font-family: var(--sans);
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--muted);
  padding-bottom: 1rem;
  margin-bottom: 1.35rem;
  border-bottom: 1px solid var(--rule);
}
h1 + p:has(> em) em { font-style: normal; }

h2 {
  font-size: 1.32rem;
  font-weight: 680;
  margin: 3rem 0 0.85rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule-strong);
}

h3 {
  font-size: 1.06rem;
  font-weight: 650;
  margin: 2.1rem 0 0.55rem;
}

p, ul, ol, blockquote, pre, .table {
  margin-top: 0;
  margin-bottom: 1.05rem;
}

ul, ol { padding-left: 1.35rem; }
li { margin: 0.38rem 0; }
li > ul, li > ol { margin: 0.35rem 0 0.45rem; }
li > p { margin-bottom: 0.5rem; }
strong { font-weight: 650; }

blockquote {
  margin: 1.25rem 0;
  padding: 0.6rem 1.1rem;
  border-left: 3px solid var(--quote);
  background: var(--surface);
  border-radius: 0 3px 3px 0;
  font-size: 0.96rem;
  line-height: 1.62;
}
blockquote p:last-child { margin-bottom: 0; }

/* Code, hashes, transaction ids */
code {
  font: 0.84em/1.45 var(--mono);
  background: var(--surface-2);
  padding: 0.1em 0.32em;
  border-radius: 3px;
  overflow-wrap: break-word;
}

pre {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rule-strong);
  border-radius: 3px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  max-width: 100%;
  width: fit-content;
  min-width: min(100%, var(--measure));
}
li pre { min-width: 0; max-width: 100%; width: 100%; }
pre code {
  background: none;
  padding: 0;
  font-size: 0.8125rem;
  line-height: 1.52;
  overflow-wrap: normal;
  word-break: normal;
  white-space: pre;
}

/* Booktabs-style tables */
.table {
  overflow-x: auto;
  max-width: 100%;
  margin: 1.25rem 0 1.5rem;
  border-top: 2px solid var(--rule-strong);
  border-bottom: 2px solid var(--rule-strong);
}
li .table { min-width: 0; max-width: 100%; }

table {
  border-collapse: collapse;
  width: 100%;
  font: 0.875rem/1.48 var(--sans);
  font-variant-numeric: tabular-nums;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.52rem 0.75rem;
  border-bottom: 1px solid var(--rule);
}

th {
  background: var(--surface);
  font-weight: 650;
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
  border-bottom: 1px solid var(--rule-strong);
  white-space: nowrap;
}

tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--surface); }

td code { font-size: 0.8rem; }
.nb { white-space: nowrap; }
td.nw { white-space: nowrap; }
td:not(.nw) { min-width: 6.5rem; }
td:not(.nw):has(> code:only-child) { min-width: 0; }

/* Quiet typographic evidence tags: chain, code, stated */
.basis {
  font: 600 0.67em/1 var(--sans);
  letter-spacing: 0.045em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  padding: 0.17em 0.42em;
  border-radius: 3px;
  white-space: nowrap;
  vertical-align: 0.1em;
}
h2 .basis, h3 .basis { font-size: 0.58em; vertical-align: 0.22em; }

a.ref { text-decoration: none; white-space: nowrap; }
a.ref:hover { text-decoration: underline; }

h2:target, h3:target {
  background: linear-gradient(var(--accent-soft), var(--accent-soft)) no-repeat 0 100% / 100% 0.4em;
}

@media (max-width: 30rem) {
  h2 { font-size: 1.18rem; margin-top: 2.35rem; }
  td:not(.nw) { min-width: 5.5rem; }
  th, td { padding: 0.45rem 0.55rem; }
}

@media print {
  @page { margin: 1.8cm 1.8cm 2cm; }
  :root {
    --bg: #fff;
    --surface: #f5f5f5;
    --surface-2: #efefef;
    --text: #000;
    --muted: #444;
    --rule: #ccc;
    --rule-strong: #666;
    --accent: #000;
    --accent-soft: #eee;
    --quote: #555;
  }
  html { font-size: 100%; }
  body { font-size: 10pt; line-height: 1.52; }
  header.site {
    position: static;
    padding: 0 0 0.35rem;
    border-bottom: 0.5pt solid #bbb;
    margin-bottom: 0.75rem;
    min-height: 0;
  }
  header.site .name { font-size: 8.5pt; color: #555; font-weight: 600; }
  header.site nav, aside, .parts, .skip { display: none !important; }
  footer.site { padding: 0.75rem 0 0; margin-top: 2rem; font-size: 8.5pt; }
  .layout { display: block; max-width: none; padding: 0; }
  main { padding: 0; }
  main > * { max-width: none; }
  h1 { font-size: 19pt; }
  h2 { font-size: 13pt; margin-top: 1.8rem; }
  h3 { font-size: 11pt; }
  blockquote { background: none; border-left: 2pt solid #666; padding: 0.15rem 0 0.15rem 0.85rem; }
  pre { white-space: pre-wrap; word-break: break-word; border-left: 2pt solid #666; }
  .table { overflow: visible; width: auto; }
  table { font-size: 8.5pt; }
  th, td { padding: 0.3rem 0.45rem; }
  td code { font-size: 7.5pt; overflow-wrap: anywhere; }
  td.nw { white-space: nowrap; }
  .basis { background: none; border: 0.75pt solid #777; color: #222; }
  a { color: inherit; text-decoration: underline; text-decoration-color: #999; }
  h1, h2, h3 { break-after: avoid; }
  tr, blockquote, pre { break-inside: avoid; }
}

/* The five questions and the answer in short */
.qa .q, .fd .q {
  display: block;
  margin-bottom: 0.3rem;
  font: 650 1.06rem/1.35 var(--sans);
  letter-spacing: -0.005em;
  color: var(--text);
}
.qa .qn, .fd .qn { color: var(--accent); margin-right: 0.15em; }
p.qa {
  margin: 1.6rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--rule-strong);
}
li.qa { margin-top: 1.1rem; }
p.fd { margin: 2rem 0 0.4rem; }
p.fd:has(> .q:only-child) { margin-bottom: 0.2rem; }
.q .basis { margin-left: 0.35em; vertical-align: 0.08em; display: inline-block; max-width: 100%; white-space: normal; line-height: 1.25; }
li.qa::marker { font: 650 1.06rem/1.35 var(--sans); color: var(--accent); }
.inshort {
  margin-top: 1.9rem;
  padding: 0.95rem 1.15rem;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
}
@media print {
  p.qa, .inshort { break-inside: avoid; }
  .inshort { background: none; }
}