.crypto-book {
  --book-ink:var(--site-ink);
  --book-muted:var(--site-muted);
  --book-paper:#fff;
  --book-line:var(--site-line);
  max-width:1200px;
  margin:0 auto;
  padding:100px 28px 64px;
  color:var(--book-ink);
}
.crypto-book a {
  color:inherit;
}
.book-trail {
  display:flex;
  gap:12px;
  font-size:13px;
  color:var(--book-muted);
  margin-bottom:28px;
  flex-wrap:wrap;
}
.book-hero {
  display:grid;
  grid-template-columns:260px 1fr;
  gap:64px;
  padding:48px;
  background:var(--site-soft);
  border-radius:18px;
  align-items:center;
}
.book-cover {
  min-height:340px;
  padding:30px 24px;
  background:linear-gradient(145deg,#19483e,#102c29);
  color:#f1e6c8;
  box-shadow:8px 15px 28px #193f3826;
  border-radius:3px 12px 12px 3px;
  border-left:7px solid #376357;
  display:flex;
  flex-direction:column;
}
.book-cover>span {
  font-size:11px;
  letter-spacing:3px;
}
.book-cover strong {
  font-size:42px;
  letter-spacing:8px;
  margin-top:38px;
}
.book-cover p {
  font-size:15px;
}
.book-symbol {
  font-family:monospace;
  font-size:54px;
  color:#81af92;
  text-align:center;
  flex:1;
}
.book-eyebrow {
  font-size:12px;
  letter-spacing:2px;
  color:#427b61!important;
}
.book-intro h1 {
  font-size:36px;
  line-height:1.5;
  margin:16px 0;
  font-weight:700;
}
.book-intro p {
  line-height:1.9;
  color:var(--book-muted);
  max-width:550px;
}
.book-meta {
  font-size:13px;
  color:var(--book-muted);
  line-height:2;
}
.book-meta span {
  margin-left:18px;
}
.book-start {
  display:inline-block;
  margin-top:24px;
  padding:12px 24px;
  border-radius:var(--site-radius-sm);
  background:var(--site-accent);
  color:white!important;
  font-weight:600;
}
.book-secondary {
  margin-left:24px;
  font-size:14px;
}
.book-contents {
  margin-top:40px;
  padding:36px 44px;
  background:var(--book-paper);
  border:1px solid var(--book-line);
  border-radius:14px;
}
.book-section-title>span {
  font-size:12px;
  color:#638975;
  letter-spacing:3px;
}
.book-section-title h2 {
  font-size:26px;
  margin:10px 0;
}
.book-section-title p {
  color:var(--book-muted);
}
.book-reading-layout {
  display:grid;
  grid-template-columns:265px minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.book-sidebar {
  position:sticky;
  top:85px;
  background:var(--book-paper);
  border:1px solid var(--book-line);
  border-radius:10px;
  padding:18px;
}
.book-sidebar summary {
  font-weight:600;
  cursor:pointer;
  padding:4px 0 12px;
}
.book-sidebar-links {
  max-height:68vh;
  overflow:auto;
}
.book-sidebar-links a {
  display:block;
  padding:9px 10px;
  font-size:13px;
  line-height:1.65;
  border-radius:4px;
}
.book-sidebar-links a.is-current {
  background:#e3f0e7;
  color:#205c43;
  font-weight:700;
  border-left:3px solid #347854;
}

.book-article {
  background:var(--book-paper);
  padding:var(--site-space-lg) 44px;
  border-radius:12px;
  border:1px solid var(--book-line);
  min-width:0;
}
.book-article h1 {
  font-size:29px;
  line-height:1.5;
  margin:16px 0;
}
.book-article>header {
  padding-bottom:24px;
  border-bottom:1px solid var(--book-line);
  margin-bottom:28px;
}
.book-prose {
  font-size:16px;
  line-height:2;
  overflow-wrap:anywhere;
}
.book-prose h2 {
  font-size:25px;
}
.book-prose h3 {
  font-size:21px;
}
.book-prose h4 {
  font-size:18px;
}
.book-prose img {
  max-width:100%;
  height:auto;
}
.book-prose pre,.book-prose .highlight {
  overflow:auto;
  max-width:100%;
  line-height:1.6;
  background:#f3f6f4;
  padding:12px;
  border-radius:var(--site-radius-sm);
}
.book-prose table {
  display:block;
  overflow:auto;
  max-width:100%;
}
.book-prose ul {
  padding-left:24px;
}
.book-prose ul li {
  list-style:disc;
}
.book-prose a {
  color:#287455;
  text-decoration:underline;
}
.book-pagination {
  display:flex;
  height:auto;
  line-height:1.7;
  background:none;
  box-shadow:none;
  gap:18px;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--book-line);
}
.book-pagination a {
  flex:1;
  padding:14px;
  border:1px solid var(--book-line);
  border-radius:var(--site-radius-sm);
  font-size:14px;
}
.book-pagination a:last-child {
  text-align:right;
}
.book-pagination small {
  display:block;
  color:var(--book-muted);
  margin-bottom:5px;
}
.dark .crypto-book {
  --book-ink:var(--site-line);
  --book-muted:#a0b6ac;
  --book-paper:#24332e;
  --book-line:#40534a;
}
.dark .book-hero {
  background:#243b31;
}
.dark .book-prose pre,.dark .book-prose .highlight {
  background:#182c23;
}
.dark .book-eyebrow {
  color:#8bbf9e!important;
}
@media(max-width:800px) {
  .crypto-book {
    padding:85px 16px 36px;
  }
  .book-hero {
    grid-template-columns:1fr;
    gap:28px;
    padding:28px;
  }
  .book-cover {
    width:205px;
    min-height:275px;
    margin:auto;
  }
  .book-cover strong {
    font-size:34px;
    margin-top:25px;
  }
  .book-symbol {
    font-size:42px;
  }
  .book-intro h1 {
    font-size:28px;
  }
  .book-contents {
    padding:24px 16px;
  }
  .book-reading-layout {
    grid-template-columns:1fr;
    gap:18px;
  }
  .book-sidebar {
    position:static;
  }
  .book-sidebar-links {
    max-height:180px;
  }
  .book-article {
    padding:24px 18px;
  }
  .book-article h1 {
    font-size:25px;
  }


  .book-pagination {
    flex-direction:column;
  }
  .book-meta span {
    margin-left:8px;
  }
}
.authored-books {
  margin:26px 0;
  padding:30px;
  background:#fff;
  border-radius:12px;
  color:var(--site-ink);
  text-align:left;
}
.authored-book-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:20px;
  margin-top:22px;
}
.authored-book-card {
  display:flex;
  gap:28px;
  padding:24px;
  background:var(--site-soft);
  border:1px solid var(--site-line);
  border-radius:10px;
  color:inherit;
}
.authored-book-cover {
  display:flex;
  flex-direction:column;
  justify-content:center;
  width:150px;
  min-width:150px;
  min-height:205px;
  background:linear-gradient(145deg,#19483e,#102c29);
  color:#f1e6c8;
  padding:20px;
  border-left:5px solid #376357;
  border-radius:3px 8px 8px 3px;
  box-shadow:4px 8px 16px #193f3820;
}
.authored-book-cover small {
  font-size:9px;
  letter-spacing:1px;
}
.authored-book-cover strong {
  font-size:30px;
  margin:22px 0 10px;
}
.authored-book-cover span {
  font-size:12px;
  line-height:1.8;
}
.authored-book-info h3 {
  font-size:22px;
  line-height:1.5;
  margin:12px 0;
}
.authored-book-info p {
  font-size:14px;
  line-height:1.9;
  color:var(--site-muted);
}
.authored-book-info small {
  color:var(--site-muted);
}
.authored-book-link {
  display:block;
  margin-top:18px;
  font-weight:600;
  color:var(--site-accent);
}
.book-prose blockquote {
  border-left:3px solid #81af92;
  padding-left:18px;
  color:var(--book-muted);
}
.book-prose figure.highlight {
  margin:20px 0;
}
.book-prose .highlight td {
  border:0;
  padding:0 8px;
}
.book-prose code {
  white-space:pre-wrap;
}
.book-prose pre code {
  white-space:pre;
}
.book-prose .gutter {
  color:#84968c;
  user-select:none;
}
.crypto-book h2,.crypto-book h3 {
  scroll-margin-top:90px;
}
.crypto-book a:focus-visible,.authored-books a:focus-visible {
  outline:3px solid #4b8b6d;
  outline-offset:4px;
}
.dark .authored-books {
  background:#24332e;
  color:var(--site-line);
}
.dark .authored-book-card {
  background:#243b31;
  border-color:#40534a;
}
.dark .authored-book-info p,.dark .authored-book-info small {
  color:#a0b6ac;
}
.dark .authored-book-link {
  color:#8bbf9e;
}
 .dark .book-sidebar-links a:hover {
  background:#314e3c;
  color:var(--site-line);
}

.dark .book-prose a {
  color:#8bbf9e;
}
@media(max-width:600px) {
  .authored-books {
    padding:22px 16px;
  }
  .authored-book-grid {
    grid-template-columns:minmax(0,1fr);
  }
  .authored-book-card {
    flex-direction:column;
    gap:18px;
    padding:20px;
  }
  .authored-book-cover {
    margin:auto;
  }
  .authored-book-info h3 {
    font-size:20px;
  }
  .book-secondary {
    display:inline-block;
    margin:18px 0 0 16px;
  }
  .book-trail {
    font-size:12px;
  }
  .book-article {
    overflow:hidden;
  }
}
@media print {
  .book-sidebar,.book-trail,.book-pagination,body>header,body>footer {
    display:none!important;
  }
  .crypto-book {
    padding:0;
    max-width:none;
  }
  .book-reading-layout {
    display:block;
  }
  .book-article {
    border:0;
    padding:0;
  }
}
.book-reading-page #headNav {
  background:#19483e!important;
}
.book-symbol {
  white-space:nowrap;
  font-size:40px;
}

/* Nested book navigation and local reading progress */
.crypto-book .book-toc-tree { list-style: none; padding: 0; margin: 0; }
.crypto-book .book-toc-tree li { list-style: none; margin: 0; }
.crypto-book .book-toc-tree .book-toc-tree { padding-left: 14px; border-left: 1px solid var(--book-line); margin-left: 8px; }
.book-toc-group > summary { cursor: pointer; padding: 12px 8px; font-weight: 600; line-height: 1.7; }
.book-toc-tree a { display: block; padding: 9px 12px; line-height: 1.7; border-radius: 5px; }
.book-toc-tree a:hover { background: var(--site-soft); }
.book-toc-tree .book-toc-intro { font-size: 13px; color: var(--book-muted); }
.book-toc-tree .is-current { background: #e3f0e7; color: #205c43; border-left: 3px solid #347854; }
.book-sidebar .book-toc-group > summary { font-size: 13px; padding: 9px 6px; }
.book-sidebar .book-sidebar-links { overflow-x: hidden; }
.book-reading-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 18px; }
.book-reading-actions .authored-book-link { margin-top: 0; }
.book-reading-actions small { flex-basis: 100%; color: var(--site-muted); line-height: 1.8; }
.book-resume { display: inline-block; padding: 9px 16px; border-radius: 5px; background: var(--site-accent); color: #fff!important; font-size: 14px; }
.book-resume[hidden] { display: none!important; }
.book-progress-note { margin-top: 20px; font-size: 12px; color: var(--site-muted); }
.authored-book-info { min-width: 0; }
.authored-book-cover { color: #f1e6c8!important; }
.dark .book-toc-tree a:hover { background: #314e3c; }
.dark .book-reading-actions small, .dark .book-progress-note { color: #a0b6ac; }
.book-toc-group summary:focus-visible, .book-toc-shell summary:focus-visible { outline: 3px solid #4b8b6d; outline-offset: 2px; }
@media (max-width: 800px) {
  .book-sidebar .book-sidebar-links { max-height: 55vh; }
  .book-toc-group > summary { font-size: 15px; }
}