@charset "UTF-8";

:root {
  color-scheme: light dark;
  --paper: #faf9f6;
  --ink: #272521;
  --muted: #88837b;
  --line: #e4e0d9;
  --hover: #efede7;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; }
.page { width: min(100% - 64px, 840px); margin: 0 auto; }
.masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-top: 56px;
  color: var(--muted);
  font-size: 12px;
}
.wordmark { color: var(--ink); font-size: 11px; letter-spacing: .24em; font-weight: 600; }
.domain { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 11px; }
main { margin-top: 112px; }
.heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
h1 { margin: 0; font-family: "Songti SC", "Noto Serif CJK SC", Georgia, serif; font-size: 52px; font-weight: 400; letter-spacing: -.04em; }
.heading-dot { color: var(--muted); margin-left: 4px; }
.count { font-size: 12px; color: var(--muted); white-space: nowrap; }
.shelf { border-top: 1px solid var(--line); }
.book { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 24px; align-items: start; padding: 32px 0; border-bottom: 1px solid var(--line); }
.number { padding-top: 6px; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 11px; }
.book-title { display: inline; font-family: Georgia, "Songti SC", serif; font-size: 23px; font-weight: 400; line-height: 1.5; letter-spacing: -.025em; text-decoration: none; overflow-wrap: anywhere; }
.open-arrow { display: inline-block; margin-left: 7px; color: var(--muted); font-family: sans-serif; font-size: 15px; transition: transform 160ms ease, color 160ms ease; }
.book-title:hover .open-arrow { transform: translate(2px, -2px); color: var(--ink); }
.book-title:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.book-meta { display: flex; flex-wrap: wrap; gap: 0 10px; margin: 12px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.separator { opacity: .6; }
.download { margin-top: 4px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); font-size: 12px; line-height: 1.5; text-decoration: none; white-space: nowrap; transition: color 160ms ease, background 160ms ease; }
.download:hover { color: var(--ink); background: var(--hover); }
a:focus-visible { outline: 2px solid var(--ink); outline-offset: 5px; border-radius: 2px; }
.empty { margin: 0; padding: 40px 0; color: var(--muted); font-size: 14px; }
footer { margin: 64px 0 40px; color: var(--muted); font-size: 12px; letter-spacing: .08em; }

@media (prefers-color-scheme: dark) {
  :root { --paper: #1c1b19; --ink: #eeeae3; --muted: #9b968e; --line: #38352f; --hover: #2a2824; }
}

@media (max-width: 600px) {
  .page { width: calc(100% - 40px); }
  .masthead { padding-top: 32px; }
  main { margin-top: 76px; }
  h1 { font-size: 44px; }
  .heading { margin-bottom: 28px; }
  .book { grid-template-columns: 20px minmax(0, 1fr); gap: 8px 16px; padding: 26px 0; }
  .book-title { font-size: 21px; }
  .download { grid-column: 2; justify-self: start; margin-top: 8px; }
  footer { margin-top: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}