:root {
  color-scheme: light;
  --tpc-page: #f6f7fb;
  --tpc-paper: #ffffff;
  --tpc-ink: #202b50;
  --tpc-blue: #304bc1;
  --tpc-blue-dark: #243b9c;
  --tpc-pale: #e9edfc;
  --tpc-mist: #d9e2f9;
  --tpc-muted: #515b77;
  --tpc-rule: #b9c5e5;
  --tpc-serif: Baskerville, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --tpc-caps: "Hoefler Text", "Palatino Linotype", Palatino, Georgia, serif;
  --tpc-text: 1.1875rem;
  --tpc-leading: 1.55;
  --tpc-width: 1200px;
  --tpc-gutter: clamp(22px, 4vw, 64px);
  --tpc-space: clamp(40px, 6vw, 88px);
  --tpc-notch: 16px;
  --tpc-cut: polygon(var(--tpc-notch) 0, 100% 0, 100% calc(100% - var(--tpc-notch)), calc(100% - var(--tpc-notch)) 100%, 0 100%, 0 var(--tpc-notch));
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; background: var(--tpc-page); }
body { margin: 0; color: var(--tpc-ink); background: var(--tpc-page); font: var(--tpc-text)/var(--tpc-leading) var(--tpc-serif); text-rendering: optimizeLegibility; }
button, input, textarea { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a { color: var(--tpc-blue-dark); text-underline-offset: .2em; text-decoration-thickness: .07em; }
a:hover { text-decoration-thickness: .13em; }
button { cursor: pointer; }
::selection { background: var(--tpc-mist); color: var(--tpc-ink); }
:focus-visible { outline: 3px solid var(--tpc-blue); outline-offset: 5px; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: 500; text-wrap: balance; }
h1 { font-size: clamp(2.75rem, 5.3vw, 5.15rem); line-height: 1.04; letter-spacing: -.028em; max-width: 16ch; }
h2 { font-size: clamp(1.85rem, 3vw, 2.7rem); line-height: 1.13; letter-spacing: -.015em; }
h3 { font-size: 1.4rem; line-height: 1.25; }
p + p { margin-top: 1.1em; }
strong { font-weight: 600; }
ol, ul { padding-left: 1.3em; }
li + li { margin-top: .5em; }
main { max-width: 1440px; margin-inline: auto; }
main:focus { outline: none; }
.tpc-smallcap { font-family: var(--tpc-caps); font-variant-caps: all-small-caps; font-synthesis: none; font-size: 1.0625rem; line-height: 1.4; letter-spacing: 0; }
.tpc-skip { position: fixed; left: 20px; top: -100px; padding: 12px 22px; background: var(--tpc-paper); z-index: 20; }
.tpc-skip:focus { top: 12px; }
.tpc-masthead { max-width: 1440px; min-height: 132px; padding: 30px var(--tpc-gutter); display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; column-gap: 30px; position: relative; background: var(--tpc-paper); margin-inline: auto; border-bottom: 2px solid var(--tpc-blue); }
.tpc-wordmark { display: inline-flex; align-items: center; gap: 16px; width: fit-content; min-height: 48px; font-size: 1.45rem; line-height: .94; color: var(--tpc-ink); text-decoration: none; }
.tpc-mark { width: 38px; height: 46px; display: block; border: 5px solid var(--tpc-blue); transform: skewY(-10deg); position: relative; }
.tpc-mark::after { content: ""; display: block; position: absolute; width: 24px; height: 27px; border: 3px solid var(--tpc-blue); top: 5px; left: 8px; background: var(--tpc-paper); }
.tpc-masthead-note { margin: 0; font-style: italic; line-height: 1.3; justify-self: center; }
.tpc-index { width: 248px; font-size: 1.0625rem; }
.tpc-index summary { min-height: 48px; display: flex; gap: 12px; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--tpc-pale); cursor: pointer; list-style: none; clip-path: var(--tpc-cut); }
.tpc-index summary::after { content: "+"; font-size: 1.55rem; line-height: 1; }
.tpc-index summary::-webkit-details-marker { display: none; }
.tpc-index[open] summary { background: var(--tpc-blue); color: var(--tpc-paper); }
.tpc-index[open] summary::after { content: "−"; }
.tpc-index nav { position: absolute; top: calc(100% - 6px); right: var(--tpc-gutter); width: min(660px, calc(100vw - 44px)); background: var(--tpc-blue); padding: 14px 24px 24px; z-index: 10; box-shadow: 12px 14px 0 var(--tpc-mist); }
.tpc-index ol { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; }
.tpc-index li { margin: 0; }
.tpc-index a { display: grid; grid-template-columns: 100px 1fr; gap: 6px; min-height: 60px; padding-block: 12px; color: var(--tpc-paper); border-bottom: 1px solid #899cea; align-items: center; text-decoration: none; }
.tpc-index a[aria-current] { box-shadow: inset 4px 0 var(--tpc-paper); padding-left: 12px; }
.tpc-index a:hover { text-decoration: underline; }
.tpc-opening { padding: 60px var(--tpc-gutter) 66px; background: var(--tpc-pale); border-bottom: 12px solid var(--tpc-blue); }
.tpc-opening-words { max-width: 1000px; }
.tpc-opening .tpc-smallcap { margin-bottom: 20px; }
.tpc-opening h1 + p { margin-top: 26px; }
.tpc-deck { max-width: 61ch; font-size: 1.3rem; line-height: 1.45; }
.tpc-guide-role { color: var(--tpc-blue-dark); font-size: 1.0625rem; max-width: 40ch; margin-bottom: 16px; }
.tpc-button { background: var(--tpc-blue); color: var(--tpc-paper); padding: 15px 25px; display: inline-flex; align-items: center; justify-content: space-between; gap: 22px; min-height: 54px; border: 0; clip-path: var(--tpc-cut); font-size: 1.125rem; line-height: 1.3; text-decoration: none; font-weight: 500; }
.tpc-button:hover { background: var(--tpc-blue-dark); text-decoration: underline; }
.tpc-button:focus-visible { outline: 0; box-shadow: inset 0 0 0 3px var(--tpc-paper), inset 0 0 0 6px var(--tpc-ink); }
.tpc-opening .tpc-button { margin-top: 30px; }
.tpc-button-light { background: var(--tpc-paper); color: var(--tpc-blue-dark); }
.tpc-button-light:hover { color: var(--tpc-paper); background: var(--tpc-blue-dark); }
.tpc-button-outline { background: var(--tpc-mist); color: var(--tpc-ink); }
.tpc-button-outline:hover { color: var(--tpc-paper); }
.tpc-page-introduction .tpc-opening { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .85fr); gap: 54px; align-items: center; padding-top: 64px; padding-bottom: 64px; }
.tpc-page-introduction h1 { max-width: 12ch; }
.tpc-page-introduction .tpc-deck { max-width: 37ch; }
.tpc-plate { background: var(--tpc-blue); color: var(--tpc-paper); padding: clamp(24px, 3vw, 40px); clip-path: var(--tpc-cut); }
.tpc-plate-mount { padding: 26px 20px; background: var(--tpc-paper); color: var(--tpc-ink); }
.tpc-diagram { list-style: none; margin: 0; padding: 0; display: grid; gap: 26px; }
.tpc-diagram li { min-width: 0; margin: 0; display: grid; gap: 3px; padding: 16px 20px; background: var(--tpc-pale); position: relative; box-shadow: 6px 6px 0 var(--tpc-mist); }
.tpc-diagram li + li::before { content: "↓"; position: absolute; left: calc(50% - 7px); top: -29px; font-size: 1.35rem; color: var(--tpc-blue); }
.tpc-diagram li span { font-size: 1.0625rem; }
.tpc-diagram li strong { font-size: 1.3rem; line-height: 1.25; }
.tpc-plate figcaption { margin-top: 24px; font-size: 1.0625rem; line-height: 1.4; max-width: 36ch; }
.tpc-plate-orientation { transform: rotate(1.5deg); margin-inline: 8px; }
.tpc-plate-orientation .tpc-diagram li:nth-child(2) { margin-left: 12px; }
.tpc-plate-orientation .tpc-diagram li:nth-child(3) { margin-left: 24px; }
.tpc-chapter { max-width: var(--tpc-width); margin: 0 auto; padding: 0 var(--tpc-gutter); }
.tpc-spread { display: grid; grid-template-columns: minmax(0, 3.2fr) minmax(170px, 1fr); gap: clamp(32px, 5vw, 72px); padding-block: var(--tpc-space); border-bottom: 2px solid var(--tpc-rule); }
.tpc-prose { max-width: 68ch; min-width: 0; }
.tpc-prose h2 { margin-bottom: 26px; }
.tpc-prose .tpc-plate { margin-block: 36px 8px; }
.tpc-margin { align-self: start; padding-top: 10px; margin-top: 7px; border-top: 7px solid var(--tpc-blue); font-size: 1.0625rem; line-height: 1.45; }
.tpc-margin .tpc-smallcap { color: var(--tpc-muted); margin-bottom: 18px; }
.tpc-margin dt { color: var(--tpc-blue-dark); font-size: 1.3rem; margin-bottom: 10px; }
.tpc-margin dd { margin: 0; }
.tpc-crumbs { background: var(--tpc-paper); padding: 8px var(--tpc-gutter); font-size: 1.0625rem; }
.tpc-crumbs ol { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: center; }
.tpc-crumbs li { display: flex; gap: 16px; align-items: center; margin: 0; }
.tpc-crumbs a { min-height: 44px; display: inline-flex; align-items: center; }
.tpc-path { padding-block: var(--tpc-space); display: grid; grid-template-columns: minmax(220px, 1fr) minmax(0, 1.7fr); gap: 64px; }
.tpc-path-heading h2 { margin-block: 20px; }
.tpc-path ol { list-style: none; margin: 0; padding: 0; }
.tpc-path li { margin: 0; border-top: 2px solid var(--tpc-rule); }
.tpc-path li:last-child { border-bottom: 2px solid var(--tpc-rule); }
.tpc-path a { text-decoration: none; display: grid; grid-template-columns: 1fr 30px; padding: 22px 10px 22px 0; }
.tpc-path a > span:first-child { grid-column: 1; color: var(--tpc-muted); }
.tpc-path strong { grid-column: 1; font-size: 1.55rem; }
.tpc-path a > span:nth-child(3) { grid-column: 1; color: var(--tpc-ink); }
.tpc-path-arrow { grid-column: 2; grid-row: 1 / 4; align-self: center; font-size: 1.5rem; }
.tpc-path a:hover strong { text-decoration: underline; }
.tpc-question { margin-top: 30px; padding-top: 24px; border-top: 2px solid var(--tpc-rule); }
.tpc-question h3 { color: var(--tpc-blue-dark); margin-bottom: 14px; }
.tpc-source-drawer { margin-block: 36px; background: var(--tpc-mist); clip-path: var(--tpc-cut); }
.tpc-source-drawer summary { min-height: 64px; padding: 18px 25px; font-size: 1.125rem; font-weight: 600; cursor: pointer; }
.tpc-source-drawer[open] summary { background: var(--tpc-blue); color: var(--tpc-paper); }
.tpc-index summary:focus-visible, .tpc-source-drawer summary:focus-visible { outline: 0; box-shadow: inset 0 0 0 3px var(--tpc-paper), inset 0 0 0 6px var(--tpc-ink); }
.tpc-source-inner { padding: 26px 32px 30px; max-width: 80ch; }
.tpc-source-inner ul { list-style: none; margin: 22px 0 10px; padding: 0; }
.tpc-source-inner li { margin: 0; }
.tpc-source-inner a { padding-block: 11px; display: inline-flex; min-height: 48px; align-items: center; }
.tpc-source-inner .tpc-textlink { gap: 14px; }
.tpc-page-turn { padding: var(--tpc-space) var(--tpc-gutter); display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; max-width: var(--tpc-width); margin-inline: auto; }
.tpc-next { flex: 1 1 400px; background: var(--tpc-blue); color: var(--tpc-paper); padding: 25px 32px; min-height: 110px; display: grid; grid-template-columns: 1fr auto; clip-path: var(--tpc-cut); text-decoration: none; }
.tpc-next strong { grid-column: 1; font-size: 1.65rem; line-height: 1.2; }
.tpc-next > span:last-child { grid-column: 2; grid-row: 1/3; align-self: center; font-size: 2rem; padding-left: 20px; }
.tpc-next:hover { background: var(--tpc-blue-dark); }
.tpc-next:focus-visible { outline: 0; box-shadow: inset 0 0 0 3px var(--tpc-paper), inset 0 0 0 6px var(--tpc-ink); }
.tpc-previous { min-height: 48px; display: inline-flex; align-items: center; padding: 8px 0; font-size: 1.0625rem; }
.tpc-footer { padding: 36px var(--tpc-gutter) 38px; background: var(--tpc-mist); max-width: 1440px; margin-inline: auto; border-top: 2px solid var(--tpc-blue); font-size: 1.0625rem; }
.tpc-footer > p { max-width: 70ch; }
.tpc-footer nav { display: flex; flex-wrap: wrap; column-gap: 30px; margin-top: 16px; }
.tpc-footer a { display: inline-flex; min-height: 48px; align-items: center; padding-block: 10px; }
.tpc-blue-note { background: var(--tpc-blue); color: var(--tpc-paper); margin-top: 48px; padding: 40px; clip-path: var(--tpc-cut); }
.tpc-blue-note h2 { max-width: 22ch; margin-bottom: 24px; }
.tpc-blue-note p { max-width: 54ch; }
.tpc-blue-note .tpc-button { margin-top: 28px; }
.tpc-lost { padding: var(--tpc-space) var(--tpc-gutter); min-height: 65vh; }
.tpc-lost p { margin-block: 22px; max-width: 62ch; }

@media (min-width: 1440px) {
  .tpc-masthead, main, .tpc-footer { border-inline: 1px solid var(--tpc-rule); }
}
@media (max-width: 900px) {
  .tpc-masthead { grid-template-columns: 1fr auto; column-gap: 20px; }
  .tpc-masthead-note { display: none; }
  .tpc-page-introduction .tpc-opening { gap: 30px; }
  .tpc-plate { padding: 24px; }
  .tpc-plate-mount { padding: 20px 14px; }
  .tpc-diagram li { padding: 14px 12px; }
  .tpc-spread { grid-template-columns: minmax(0, 1fr) 180px; gap: 30px; }
  .tpc-path { grid-template-columns: 1fr 1.3fr; gap: 32px; }
}
@media (max-width: 680px) {
  :root { --tpc-text: 1.125rem; --tpc-notch: 12px; }
  .tpc-masthead { min-height: 116px; padding-block: 22px; gap: 18px; }
  .tpc-wordmark { font-size: 1.25rem; gap: 12px; }
  .tpc-mark { width: 28px; height: 38px; border-width: 4px; }
  .tpc-mark::after { width: 20px; height: 24px; left: 4px; top: 3px; }
  .tpc-index { width: 146px; }
  .tpc-index summary { font-size: 1rem; padding: 10px 12px; line-height: 1.2; }
  .tpc-index nav { right: 22px; padding: 12px 20px 22px; }
  .tpc-index ol { grid-template-columns: 1fr; }
  .tpc-index a { grid-template-columns: 100px 1fr; min-height: 53px; }
  .tpc-opening { padding-block: 40px; }
  h1 { font-size: clamp(2.45rem, 11vw, 3.2rem); max-width: 15ch; }
  h2 { font-size: 1.95rem; }
  .tpc-deck { font-size: 1.2rem; }
  .tpc-page-introduction .tpc-opening { grid-template-columns: 1fr; padding-block: 38px 46px; gap: 42px; }
  .tpc-page-introduction h1 { max-width: 13ch; }
  .tpc-page-introduction .tpc-opening .tpc-smallcap { margin-bottom: 12px; }
  .tpc-guide-role { max-width: 30ch; }
  .tpc-plate-orientation { margin: 0 8px 0 2px; transform: rotate(1deg); }
  .tpc-plate-mount { padding: 26px 20px; }
  .tpc-diagram li { padding: 14px 16px; }
  .tpc-plate figcaption { margin-top: 20px; }
  .tpc-spread { grid-template-columns: 1fr; gap: 28px; padding-block: 42px; }
  .tpc-margin { background: var(--tpc-pale); padding: 20px 22px; border-top-width: 5px; margin-top: 0; }
  .tpc-margin .tpc-smallcap { margin-bottom: 8px; }
  .tpc-margin dt { margin-bottom: 7px; }
  .tpc-path { grid-template-columns: 1fr; padding-block: 44px; gap: 30px; }
  .tpc-path-heading { max-width: 30ch; }
  .tpc-path-heading h2 { margin-block: 16px; }
  .tpc-path a { padding-block: 19px; }
  .tpc-source-inner { padding: 22px; }
  .tpc-source-drawer summary { padding-inline: 20px; }
  .tpc-source-inner a { overflow-wrap: anywhere; }
  .tpc-page-turn { padding-block: 42px; gap: 18px; }
  .tpc-next { padding: 24px; flex-basis: 100%; }
  .tpc-next strong { font-size: 1.5rem; }
  .tpc-crumbs { line-height: 1.35; }
  .tpc-crumbs ol { column-gap: 10px; }
  .tpc-crumbs li { gap: 10px; }
  .tpc-footer { padding-block: 28px; }
  .tpc-footer nav { flex-direction: column; gap: 0; align-items: flex-start; }
  .tpc-blue-note { padding: 28px 24px; }
}
@media (max-width: 350px) {
  .tpc-mark { display: none; }
  .tpc-index { width: 136px; }
  .tpc-masthead { column-gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  body { background: white; color: black; font-size: 12pt; }
  .tpc-masthead, .tpc-skip, .tpc-page-turn, .tpc-footer nav, .tpc-crumbs { display: none; }
  .tpc-opening, .tpc-plate, .tpc-margin, .tpc-source-drawer { background: white; color: black; border: 1px solid #777; }
  .tpc-opening { padding: 24px 0; }
  .tpc-opening h1 { font-size: 32pt; }
  .tpc-chapter { max-width: none; padding: 0; }
  .tpc-spread { padding-block: 24px; }
  .tpc-worksheet-actions { display: none !important; }
  .tpc-button { color: black; background: white; }
  a { color: black; }
  details > * { display: block; }
}