.options-reader {
  max-width: 72rem;
  margin: 0 auto 6rem;
  padding-top: 1.2rem;
  color: var(--c-fg);
}

.options-reader h1,
.options-reader h2 {
  color: var(--c-fg-deeper);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.options-reader h1 {
  margin: 1.6rem 0 1.2rem;
  font-size: 3.2rem;
  line-height: 1.25;
}

.options-reader h2 {
  margin: 0 0 0.8rem;
  font-size: 2.2rem;
  line-height: 1.35;
}

.options-reader p {
  margin: 0 0 1.2rem;
}

.options-banner,
.options-boundary {
  margin: 0 0 1.6rem;
  padding: 1.1rem 1.3rem;
  border: 1px solid var(--c-border);
  border-radius: 12px;
  background: color-mix(in srgb, var(--c-fg) 7%, transparent);
  color: var(--c-fg-deep);
  font-size: 1.45rem;
  line-height: 1.6;
}

.options-boundary p:last-child,
.options-banner {
  margin-bottom: 0;
}

.options-cover {
  margin: 0 0 1.6rem;
  padding: 2.8rem 2.4rem 2.4rem;
  border-radius: 18px;
  background: var(--c-fg-deeper);
  color: var(--c-bg);
}

.options-cover h1,
.options-cover p {
  color: inherit;
}

.options-cover h1 {
  margin: 0.6rem 0 1.2rem;
  font-size: clamp(2.8rem, 4vw, 4rem);
  line-height: 1.2;
}

.options-cover-edition,
.options-kicker,
.options-bookline {
  margin: 0 0 0.8rem;
  font-size: 1.3rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.options-cover-edition {
  opacity: 0.72;
}

.options-cover-by {
  margin: 0;
  font-size: 1.6rem;
}

.options-bookline a {
  color: var(--c-fg-light) !important;
  text-decoration: none;
}

.options-bookline a:hover {
  color: var(--c-fg-deeper) !important;
}

.options-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0 0 1.6rem;
}

.options-facts div {
  padding: 1rem 0 0;
  border-top: 1px solid var(--c-border);
}

.options-facts dt {
  margin-bottom: 0.3rem;
  color: var(--c-fg-light);
  font-size: 1.2rem;
}

.options-facts dd {
  margin: 0;
  color: var(--c-fg-deeper);
  font-size: 1.5rem;
}

.options-lead,
.options-note {
  max-width: 62ch;
  color: var(--c-fg);
  font-size: 1.6rem;
  line-height: 1.7;
}

.options-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem 1.6rem;
  margin: 0.4rem 0 2rem;
}

.options-buy {
  display: inline-flex;
  flex-direction: column;
  gap: 0.35rem;
  max-width: 100%;
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--c-fg-deeper);
  border-radius: 14px;
  background: var(--c-fg-deeper);
  color: var(--c-bg) !important;
  text-decoration: none !important;
}

.options-buy.is-secondary {
  background: transparent;
  color: var(--c-fg-deeper) !important;
}

.options-buy-label {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
}

.options-buy-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.15rem;
  line-height: 1.4;
  opacity: 0.78;
  word-break: break-all;
}

.options-quiet {
  color: var(--c-link);
  font-size: 1.5rem;
  font-weight: 650;
}

.options-resume {
  margin: 0 0 1.6rem;
}

.options-resume a {
  font-size: 1.5rem;
  font-weight: 650;
}

.options-toc-heading {
  margin-top: 0.4rem;
}

.options-toc {
  list-style: none;
  margin: 0 0 2.4rem;
  padding: 0;
}

.options-cover-row {
  display: grid;
  grid-template-columns: 22rem minmax(0, 1fr);
  gap: 2.4rem;
  align-items: start;
  margin-bottom: 2.4rem;
}

.options-cover-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.options-cover-sub {
  margin: 0 0 0.6rem;
  color: var(--c-fg-deep);
  font-size: 1.7rem;
  line-height: 1.45;
}

.options-toc-item {
  border-bottom: 1px solid var(--c-border);
}

.options-toc > li > a,
.options-toc-item > a {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr) auto;
  gap: 0.8rem 1.2rem;
  align-items: center;
  padding: 1.3rem 0.2rem 0.6rem;
  color: inherit !important;
  text-decoration: none !important;
}

.options-toc-sections,
.options-lock-sections {
  list-style: none;
  margin: 0;
  padding: 0 0 1rem 4.4rem;
}

.options-toc-sections li,
.options-lock-sections li {
  margin: 0;
  padding: 0.2rem 0;
  color: var(--c-fg);
  font-size: 1.4rem;
  line-height: 1.55;
}

.options-lock-sections {
  margin: 0.4rem 0 1.6rem;
  padding-left: 0;
}

.options-prose img {
  display: block;
  max-width: min(100%, 64rem);
  height: auto;
  margin: 1.6rem 0 0.4rem;
}

.options-prose em {
  display: block;
  margin: 0 0 1.6rem;
  color: var(--c-fg-light);
  font-size: 1.4rem;
  font-style: normal;
}

.options-toc > li > a:hover .options-toc-title {
  text-decoration: underline;
}

.options-toc-num {
  color: var(--c-fg-light);
  font-variant-numeric: tabular-nums;
  font-size: 1.4rem;
}

.options-toc-title {
  color: var(--c-fg-deeper);
  font-size: 1.7rem;
  line-height: 1.4;
}

.options-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0 0.7rem;
  border: 1px solid var(--c-border);
  border-radius: 999px;
  color: var(--c-fg-deep);
  font-size: 1.2rem;
  line-height: 1;
  white-space: nowrap;
}

.options-badge.is-locked {
  border-color: var(--c-fg-deeper);
  color: var(--c-fg-deeper);
}

.options-toc .options-boundary,
aside.options-boundary {
  margin: 0.8rem 0;
  padding: 1rem 1.2rem;
}

.options-progress-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.4rem;
}

.options-position {
  margin: 0;
  color: var(--c-fg-deep);
  font-size: 1.4rem;
  font-variant-numeric: tabular-nums;
}

.options-meter {
  height: 3px;
  margin-top: 0.8rem;
  border-radius: 999px;
  background: var(--c-border);
  overflow: hidden;
}

.options-meter > span {
  display: block;
  height: 100%;
  background: var(--c-fg-deeper);
}

.options-scroll {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: 3px;
  pointer-events: none;
}

.options-scroll > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--c-link);
}

.options-prose {
  max-width: 66ch;
  margin: 1.6rem 0 2rem;
  padding: 2rem 0 0.4rem;
  border-top: 1px solid var(--c-border);
  color: var(--c-fg-deep);
  font-family: "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC",
    "Noto Serif SC", "Source Han Serif SC", PMingLiU, serif;
  font-size: 1.95rem;
  line-height: 1.85;
}

.options-prose p {
  margin: 0;
}

.options-lock {
  margin: 1.6rem 0 2rem;
  padding: 2rem 1.8rem 1.8rem;
  border: 1px solid var(--c-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--c-fg) 5%, transparent);
}

.options-lock p {
  max-width: 52ch;
  font-size: 1.6rem;
  line-height: 1.7;
}

.options-pager {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.8rem;
  margin-top: 2.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--c-border);
}

.options-pager-link {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  min-height: 4.4rem;
  padding: 0.8rem 0.2rem;
  color: var(--c-fg-deeper) !important;
  font-size: 1.5rem;
  font-weight: 650;
  text-decoration: none !important;
}

.options-pager-link:last-child {
  align-items: flex-end;
  text-align: right;
}

.options-pager-toc {
  align-items: center;
  text-align: center;
}

.options-pager-link.is-disabled {
  color: var(--c-fg-light) !important;
  font-weight: 500;
}

.options-en-card {
  margin-top: 0.8rem;
  padding: 1.8rem 1.6rem 1.6rem;
  border: 1px solid var(--c-border);
  border-radius: 16px;
}

.options-en-card h2 {
  font-size: 2rem;
}

.options-en-line {
  margin-top: 2rem;
  color: var(--c-fg-light);
  font-size: 1.4rem;
  line-height: 1.6;
}

.options-reader a:focus-visible {
  outline: 2px solid var(--c-link);
  outline-offset: 3px;
}

@media only screen and (max-width: 768px) {
  .options-reader h1,
  .options-cover h1 {
    font-size: 2.8rem;
  }

  .options-facts {
    grid-template-columns: 1fr;
  }

  .options-cover-row {
    grid-template-columns: 1fr;
  }

  .options-cover-img {
    max-width: 24rem;
  }

  .options-toc > li > a,
  .options-toc-item > a {
    grid-template-columns: 2.8rem minmax(0, 1fr);
  }

  .options-toc-sections {
    padding-left: 2.8rem;
  }

  .options-toc .options-badge {
    grid-column: 2;
    justify-self: start;
  }

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

  .options-pager-link,
  .options-pager-link:last-child,
  .options-pager-toc {
    align-items: flex-start;
    text-align: left;
  }
}