:root {
  --reader-bg: #ecebe6;
  --reader-paper: #fffefb;
  --reader-paper-strong: #ffffff;
  --reader-text: #242722;
  --reader-muted: #72766f;
  --reader-line: #d9d8d0;
  --reader-soft: #f3f2ec;
  --reader-accent: #8f3028;
  --reader-support: #355f52;
  --reader-size: 19px;
  --reader-width: 42rem;
  --reader-rail: 15rem;
  --reader-shadow: 0 18px 55px rgba(50, 48, 40, 0.08);
  --reader-font: "Microsoft YaHei", "Microsoft YaHei UI", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

:root[data-reader-theme="light"] { color-scheme: light; }
:root[data-reader-theme="dark"] {
  color-scheme: dark;
  --reader-bg: #151714;
  --reader-paper: #1e211e;
  --reader-paper-strong: #242824;
  --reader-text: #ecebe4;
  --reader-muted: #aaa9a1;
  --reader-line: #3a3e39;
  --reader-soft: #292d29;
  --reader-accent: #e19186;
  --reader-support: #82b2a4;
  --reader-shadow: 0 18px 55px rgba(0, 0, 0, 0.24);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-reader-theme="light"]) {
    color-scheme: dark;
    --reader-bg: #151714;
    --reader-paper: #1e211e;
    --reader-paper-strong: #242824;
    --reader-text: #ecebe4;
    --reader-muted: #aaa9a1;
    --reader-line: #3a3e39;
    --reader-soft: #292d29;
    --reader-accent: #e19186;
    --reader-support: #82b2a4;
    --reader-shadow: 0 18px 55px rgba(0, 0, 0, 0.24);
  }
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 78px;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 8%, color-mix(in srgb, var(--reader-paper) 72%, transparent) 0 12rem, transparent 34rem),
    linear-gradient(135deg, transparent 0 48%, color-mix(in srgb, var(--reader-line) 32%, transparent) 50%, transparent 52%) 0 0 / 36px 36px,
    var(--reader-bg) !important;
  color: var(--reader-text) !important;
  font-family: var(--reader-font);
  letter-spacing: 0 !important;
}

.bar {
  position: sticky !important;
  top: 0;
  z-index: 30 !important;
  min-height: 58px;
  flex-wrap: nowrap !important;
  gap: 7px !important;
  padding: max(7px, env(safe-area-inset-top)) max(12px, calc((100vw - 72rem) / 2)) 7px !important;
  overflow-x: auto;
  background: color-mix(in srgb, var(--reader-paper) 94%, transparent) !important;
  border-bottom: 1px solid var(--reader-line) !important;
  box-shadow: 0 8px 24px rgba(34, 35, 31, 0.05);
  backdrop-filter: blur(18px) saturate(1.15);
  scrollbar-width: none;
}
.bar::-webkit-scrollbar { display: none; }
.bar a,
.bar button {
  min-width: 42px;
  min-height: 42px;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 7px 12px !important;
  color: var(--reader-text) !important;
  background: transparent !important;
  border: 1px solid transparent !important;
  border-radius: 999px !important;
  text-decoration: none;
  letter-spacing: 0 !important;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}
.bar a:hover,
.bar button:hover {
  color: var(--reader-accent) !important;
  background: var(--reader-soft) !important;
  border-color: var(--reader-line) !important;
}
.bar .grow { min-width: 8px; }
.reader-brand {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 7px;
  color: var(--reader-support);
  font-family: var(--reader-font);
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.reading-progress {
  position: sticky;
  top: 58px;
  z-index: 31;
  height: 3px;
  background: transparent;
}
.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--reader-support), var(--reader-accent));
  box-shadow: 0 0 12px color-mix(in srgb, var(--reader-support) 45%, transparent);
}

.reader-layout {
  width: min(calc(var(--reader-width) + var(--reader-rail) + 3.5rem), calc(100% - 40px));
  margin: 32px auto 70px;
  display: grid;
  grid-template-columns: minmax(0, var(--reader-width)) var(--reader-rail);
  align-items: start;
  gap: 3.5rem;
}
.reader-layout > main {
  width: 100% !important;
  max-width: none !important;
  min-width: 0;
  margin: 0 !important;
  padding: 42px 48px 110px !important;
  background: var(--reader-paper);
  border: 1px solid var(--reader-line);
  border-radius: 3px;
  box-shadow: var(--reader-shadow);
}
.reader-eyebrow {
  margin-bottom: 15px;
  color: var(--reader-support);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1 {
  margin: 0 0 20px !important;
  color: var(--reader-text);
  font-family: var(--reader-font) !important;
  font-size: clamp(29px, 3vw, 38px) !important;
  font-weight: 800;
  line-height: 1.32 !important;
  text-align: left !important;
  letter-spacing: -.02em !important;
  overflow-wrap: anywhere;
}

.reader-info {
  margin: 0 0 24px;
  padding: 0;
  color: var(--reader-muted);
  border: 0;
  border-top: 1px solid var(--reader-line);
  border-bottom: 1px solid var(--reader-line);
  border-radius: 0;
  background: transparent;
}
.reader-info > summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  padding: 10px 0;
  color: var(--reader-muted);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  list-style-position: inside;
}
.reader-info-body { padding: 0 0 18px; }
.reader-info .subtitle { margin: 0 0 12px !important; text-align: left !important; }
.reader-info .badges { justify-content: flex-start !important; margin: 0 0 12px !important; }
.reader-info .content-tags,
.reader-info .metadata,
.reader-info .editor-meta {
  margin: 10px 0 0 !important;
  border-radius: 3px !important;
}
.badge,
.tag { border-radius: 999px !important; }

.toc {
  border: 1px solid var(--reader-line) !important;
  border-radius: 3px !important;
  background: var(--reader-soft);
}
.toc a,
.links a { color: var(--reader-accent) !important; }

.formatted-article {
  color: var(--reader-text);
  font-family: var(--reader-font) !important;
  font-size: var(--reader-size) !important;
  line-height: 2 !important;
  letter-spacing: .015em !important;
}
.formatted-article p {
  margin: 0 0 1.05em !important;
  text-align: justify !important;
  text-indent: 2em;
  overflow-wrap: break-word;
  text-wrap: pretty;
}
.formatted-article h2 {
  position: relative;
  margin: 3.2em 0 1.6em !important;
  padding: 1.15em 0 0 !important;
  color: var(--reader-text);
  font-size: 1.35em !important;
  line-height: 1.5 !important;
  text-align: left !important;
  scroll-margin-top: 82px;
}
.formatted-article h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3.2rem;
  height: 3px;
  background: var(--reader-accent);
}
.formatted-article hr {
  width: 7rem !important;
  margin: 2.7em auto !important;
  border: 0 !important;
  border-top: 1px solid var(--reader-line) !important;
}
.structured-lines,
.original pre {
  color: var(--reader-text) !important;
  background: var(--reader-soft) !important;
  border-radius: 3px !important;
  font-family: var(--reader-font) !important;
}
.metadata,
.content-tags,
.original,
.footnav a { border-color: var(--reader-line) !important; }
.footnav { gap: 10px !important; }
.footnav a {
  min-width: 0;
  border-radius: 3px !important;
  background: var(--reader-paper-strong);
  overflow-wrap: anywhere;
}
.original { color: var(--reader-muted); }

.reader-aside {
  position: sticky;
  top: 86px;
  display: grid;
  gap: 14px;
  min-width: 0;
}
.reader-aside-card {
  padding: 18px;
  background: color-mix(in srgb, var(--reader-paper) 88%, transparent);
  border: 1px solid var(--reader-line);
  box-shadow: 0 12px 32px rgba(44, 43, 38, .05);
}
.reader-aside-title {
  margin: 0 0 12px;
  color: var(--reader-text);
  font-family: var(--reader-font);
  font-size: 18px;
  font-weight: 800;
}
.reader-aside-list {
  max-height: min(56vh, 34rem);
  margin: 0;
  padding: 0;
  overflow: auto;
  list-style: none;
  scrollbar-width: thin;
}
.reader-aside-list li + li { border-top: 1px dashed var(--reader-line); }
.reader-aside-list a {
  display: block;
  padding: 8px 0;
  color: var(--reader-muted);
  font-family: var(--reader-font);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.reader-aside-list a:hover,
.reader-aside-list a[aria-current="true"] { color: var(--reader-accent); }
.reader-aside-progress {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  color: var(--reader-muted);
  font-size: 13px;
}
.reader-aside-meter {
  grid-column: 1 / -1;
  height: 5px;
  overflow: hidden;
  background: var(--reader-line);
  border-radius: 999px;
}
.reader-aside-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--reader-support);
}
.reader-aside-home {
  display: inline-flex;
  margin-top: 14px;
  color: var(--reader-support);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

@media (min-width: 981px) {
  .reader-enhanced main > .toc { display: none; }
}

@media (max-width: 980px) {
  .reader-layout {
    width: min(var(--reader-width), calc(100% - 32px));
    display: block;
    margin-top: 22px;
  }
  .reader-layout > main { padding: 38px 40px 96px !important; }
  .reader-aside { display: none; }
}

@media (max-width: 650px) {
  body { background: var(--reader-paper) !important; }
  .bar {
    padding-inline: 7px !important;
    box-shadow: none;
  }
  .bar .grow,
  .reader-brand,
  .bar a[href="#formatted"],
  .bar a[href="#original"] { display: none; }
  .reader-layout {
    width: 100%;
    margin: 0;
  }
  .reader-layout > main {
    width: 100% !important;
    margin: 0 !important;
    padding: 24px 16px 84px !important;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }
  .reader-eyebrow { margin-bottom: 10px; }
  h1 {
    margin-bottom: 15px !important;
    font-size: clamp(27px, 7.2vw, 33px) !important;
    line-height: 1.32 !important;
  }
  .reader-info { margin-bottom: 17px; }
  .formatted-article {
    font-size: var(--reader-size) !important;
    line-height: 1.92 !important;
  }
  .formatted-article p {
    text-align: left !important;
    text-indent: 2em;
  }
  .formatted-article h2 { margin-top: 2.7em !important; }
  .footnav { grid-template-columns: minmax(0, 1fr) !important; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  .bar a,
  .bar button { transition: none; }
}