:root {
  --paper: #F6F1E8;
  --ink: #1A1814;
  --mute: #5C574E;
  --line: #D9D1C3;
  --blue: #1E6FA8;
  --red: #B91C2C;
  --ochre: #9C5A2A;
  --pine: #3A6B52;
  --rust: #C45C26;
  --indigo: #3A4F7A;
  --plate: #FFFBF3;
}
* { box-sizing: border-box; margin: 0; }
html { background: var(--paper); color: var(--ink); }
body { font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; font-size: 17px; line-height: 1.75; }
a { color: var(--blue); }
.page { max-width: 40rem; margin: 0 auto; padding: 2.5rem 1.5rem 6rem; }
header {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 2.25rem;
}
.brand { font-size: 13px; font-weight: 600; color: var(--mute); text-decoration: none; }
.brand b { color: var(--blue); font-family: "IBM Plex Mono", "ui-monospace", monospace; font-weight: 600; letter-spacing: .06em; }
.back {
  font-family: "IBM Plex Mono", "ui-monospace", monospace; font-size: 13px; font-weight: 500; color: var(--mute);
  text-decoration: none;
}
.series {
  font-family: "IBM Plex Mono", "ui-monospace", monospace;
  font-size: 12px; font-weight: 600; letter-spacing: .08em; color: var(--blue);
}
h1 {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 700; letter-spacing: .02em; line-height: 1.3;
  margin-top: .45rem;
}
.lede { margin-top: .85rem; color: var(--mute); font-size: 16px; max-width: 36em; }
.cover {
  display: block; width: 100%; height: auto;
  margin: 1.6rem 0 1.8rem;
  border: 1px solid var(--ink);
  background: var(--plate);
}
.article h2 {
  font-family: "Noto Serif SC", serif;
  font-size: 1.25rem; font-weight: 700;
  margin: 2.2rem 0 .7rem;
}
.article h3 {
  font-family: "Noto Serif SC", serif;
  font-size: 1.05rem; font-weight: 700;
  margin: 1.6rem 0 .5rem;
}
.article p { margin: .9rem 0; }
.article strong { font-weight: 700; }
.article em { font-style: italic; }
.article blockquote {
  margin: 1.2rem 0;
  padding: .2rem 0 .2rem 1rem;
  border-left: 2px solid var(--ink);
  color: var(--mute);
}
.article ul, .article ol { margin: .8rem 0 1rem 1.2rem; }
.article li { margin: .25rem 0; }
.article hr {
  border: 0; border-top: 1px solid var(--line);
  margin: 1.8rem 0;
}
.article img {
  display: block; max-width: 100%; height: auto;
  margin: 1.2rem 0 .4rem;
  border: 1px solid var(--line);
}
.article figcaption, .article em:has(+ img) { font-size: 13px; color: var(--mute); }
.back:hover, .brand:hover { color: var(--blue); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.skip {
  position: absolute; left: -999px; top: .75rem;
  background: var(--ink); color: var(--paper);
  font-family: "IBM Plex Mono", monospace; font-size: 12px;
  padding: .4rem .7rem; text-decoration: none;
}
.skip:focus { left: 1rem; z-index: 10; }