.ebook-reader { padding: 64px 0 96px; }
.ebook-reader__shell { max-width: 800px; }
.ebook-reader__back { display: block; width: fit-content; margin-bottom: 28px; color: var(--muted); font-size: 14px; }
.ebook-reader__cover { padding-bottom: 28px; border-bottom: 2px solid var(--ink); }
.ebook-reader__cover h1 { margin: 16px 0 12px; font-size: clamp(32px, 5vw, 44px); line-height: 1.25; letter-spacing: -.03em; }
.ebook-reader__subtitle { margin: 0; color: var(--muted); font-size: 18px; }
.ebook-reader__edition { margin: 16px 0 0; color: var(--muted); font-size: 14px; }
.ebook-reader__pdf { display: inline-block; margin-top: 20px; padding: 10px 16px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--blue); font-size: 14px; font-weight: 600; }
.ebook-reader__toc { margin: 28px 0 40px; padding: 18px 22px; border: 1px solid var(--glass-border-light); border-radius: 16px; background: var(--glass-light-strong); }
.ebook-reader__toc summary { cursor: pointer; font-weight: 700; }
.ebook-reader__toc nav { max-height: 50vh; overflow-y: auto; margin-top: 16px; }
.ebook-reader__toc ul { margin: 0; padding-left: 20px; }
.ebook-reader__toc li { margin: 8px 0; }
.ebook-reader__toc a { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.ebook-reader__body { font-size: 18px; line-height: 1.85; }
.ebook-reader__chapter { min-width: 0; }
.ebook-reader__body h2 { margin: 64px 0 22px; padding-top: 28px; border-top: 2px solid var(--ink); font-size: 29px; line-height: 1.35; letter-spacing: -.02em; scroll-margin-top: 100px; }
.ebook-reader__chapter:first-child h2 { margin-top: 0; padding-top: 0; border-top: 0; }
.ebook-reader__body h3 { margin: 40px 0 12px; font-size: 23px; line-height: 1.4; letter-spacing: -.02em; scroll-margin-top: 100px; }
.ebook-reader__body h4 { margin: 28px 0 10px; font-size: 19px; line-height: 1.4; }
.ebook-reader__body p { margin: 0 0 18px; }
.ebook-reader__body ul, .ebook-reader__body ol { padding-left: 24px; margin: 0 0 20px; }
.ebook-reader__body li { margin: 8px 0; }
.ebook-reader__body a { color: var(--blue); text-decoration: underline; overflow-wrap: anywhere; }
.ebook-reader__body img { width: 100%; height: auto; display: block; margin: 26px 0; border: 1px solid var(--line); border-radius: 10px; }
.ebook-reader__body code { padding: 2px 6px; border-radius: 4px; background: #eef1f7; font-size: .9em; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
.ebook-reader__body pre { max-width: 100%; margin: 24px 0; padding: 20px; border-radius: 12px; overflow-x: auto; background: #0f172a; color: #e2e8f0; font-size: 15px; line-height: 1.65; }
.ebook-reader__body pre code { padding: 0; background: none; color: inherit; overflow-wrap: normal; }
.ebook-reader__body blockquote { margin: 24px 0; padding: 18px 22px; border-left: 4px solid var(--blue); border-radius: 0 10px 10px 0; background: #eef2fa; }
.ebook-reader__body blockquote p:last-child { margin-bottom: 0; }
.ebook-reader__table { max-width: 100%; overflow-x: auto; margin: 24px 0; }
.ebook-reader__table table { width: 100%; border-collapse: collapse; font-size: 16px; }
.ebook-reader__table th, .ebook-reader__table td { padding: 10px 12px; border: 1px solid #dce1ea; text-align: left; vertical-align: top; overflow-wrap: anywhere; }
.ebook-reader__table th { background: #eef1f7; }
.ebook-reader__body hr { margin: 40px 0; border: 0; border-top: 1px solid var(--line); }
.ebook-reader__source-note { margin: 48px 0 0; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.ebook-reader__next { margin-top: 40px; padding: 28px 0 0; border-top: 1px solid var(--line); }
.ebook-reader__next h2 { margin: 0 0 12px; font-size: 23px; line-height: 1.4; }
.ebook-reader__next p { color: var(--muted); }
.ebook-reader__next a { display: inline-block; margin-right: 20px; padding: 12px 0; color: var(--blue); font-weight: 600; }
@media (max-width: 700px) {
  .ebook-reader { padding: 40px 0 64px; }
  .ebook-reader__body { font-size: 16px; }
  .ebook-reader__subtitle { font-size: 17px; }
  .ebook-reader__body h2 { font-size: 25px; }
  .ebook-reader__body h3 { font-size: 21px; }
  .ebook-reader__body pre { padding: 16px; font-size: 13px; }
  .ebook-reader__body blockquote { padding: 16px; }
  .ebook-reader__table table { font-size: 14px; }
  .ebook-reader__table th, .ebook-reader__table td { padding: 8px; }
}