:root {
  --ink: #101820;
  --ink-soft: #2a3640;
  --paper: #f3efe6;
  --paper-deep: #e7e1d4;
  --surface: rgba(255, 255, 255, 0.62);
  --accent: #0d7a6f;
  --accent-hover: #095c54;
  --line: rgba(16, 24, 32, 0.13);
  --muted: #5c6770;
  --glow: rgba(13, 122, 111, 0.18);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body.chapter-page {
  width: 100%;
  max-width: none;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, var(--glow), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(16, 24, 32, 0.06), transparent 50%),
    linear-gradient(165deg, #f7f4ed 0%, var(--paper) 45%, var(--paper-deep) 100%);
  font-family: "Sora", system-ui, sans-serif;
  line-height: 1.65;
}

.chapter-page .site-nav,
.chapter-page .chapter-content,
.chapter-page .chapter-pager {
  width: min(920px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--line);
}

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.site-home,
.site-privacy,
.site-chapter-number {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-home,
.site-privacy {
  text-decoration: none;
}

.site-home:hover,
.site-privacy:hover {
  color: var(--accent);
}

.chapter-content {
  margin-block: clamp(2rem, 6vw, 4rem);
  padding: clamp(1.25rem, 4vw, 3rem);
  overflow-wrap: anywhere;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 4px;
  box-shadow: 0 22px 60px rgba(16, 24, 32, 0.08);
}

.chapter-content > h1:first-child,
.chapter-content > p:first-child {
  margin-top: 0;
}

.chapter-content h1,
.chapter-content h1 span {
  color: var(--ink);
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.chapter-content h2,
.chapter-content h2 span {
  color: var(--ink);
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  line-height: 1.3;
}

.chapter-content h3,
.chapter-content h3 span {
  color: var(--accent-hover);
  font-family: "Sora", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.4;
}

.chapter-content p,
.chapter-content li,
.chapter-content p span,
.chapter-content li span {
  color: var(--ink-soft);
  font-family: "Sora", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

.chapter-content p,
.chapter-content li,
.chapter-content h1,
.chapter-content h2,
.chapter-content h3,
.chapter-content h4 {
  max-width: 72ch;
}

.chapter-content ul,
.chapter-content ol {
  max-width: 72ch;
}

.chapter-content li {
  margin-block: 0.25rem;
}

.chapter-content hr {
  height: 1px;
  margin-block: 1.75rem;
  border: 0;
  background: var(--line);
}

.chapter-content a {
  color: var(--accent);
  text-underline-offset: 3px;
}

.chapter-content h1[id],
.chapter-content h2[id],
.chapter-content h3[id] {
  scroll-margin-top: 1.25rem;
}

.chapter-content a.topic-link {
  color: var(--accent);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid rgba(13, 122, 111, 0.35);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.chapter-content a.topic-link:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}

.chapter-content a.topic-heading-link {
  color: inherit;
  border-bottom-color: rgba(13, 122, 111, 0.28);
}

.chapter-content a.topic-heading-link:hover {
  color: var(--accent-hover);
}

.chapter-content table {
  display: table;
  width: 100%;
  max-width: 100%;
  margin-block: 1.5rem;
  overflow: visible;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.5);
}

.chapter-content td,
.chapter-content th {
  width: auto !important;
  min-width: 0;
  padding: 0.7rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.chapter-content [style*="Roboto Mono"],
.chapter-content [class] span[style*="monospace"] {
  overflow-wrap: anywhere;
}

.chapter-pager {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: clamp(2.5rem, 7vw, 4rem);
}

.pager-link {
  display: flex;
  min-height: 5.5rem;
  flex-direction: column;
  justify-content: center;
  padding: 1rem 1.15rem;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.pager-link:hover {
  color: var(--accent-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.pager-link.next {
  text-align: right;
}

.pager-direction {
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pager-title {
  font-size: 0.9rem;
  font-weight: 500;
}

.pager-placeholder {
  min-height: 1px;
}

@media (max-width: 720px) {
  .chapter-content {
    padding: 1.1rem;
  }

  .chapter-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .chapter-content td,
  .chapter-content th {
    min-width: 110px;
  }
}

@media (max-width: 520px) {
  .chapter-page .site-nav,
  .chapter-page .chapter-content,
  .chapter-page .chapter-pager {
    width: min(100% - 1.25rem, 920px);
  }

  .chapter-pager {
    grid-template-columns: 1fr;
  }

  .pager-link.next {
    text-align: left;
  }

  .pager-placeholder {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .pager-link {
    transition: none;
  }
}