:root {
  --font-size: 16px;
  --line-height: 1.8;
  --bg-color:#e0d8bf;
  --text-color: #333;
  --control-bg: rgba(0,0,0,0.75);
  --control-color: #fff;
  --turnLeft-property:'上一章';
  --turnRight-property:'下一章';
  --transition: all 0.3s ease;
  --reader-padding: 0rem 2rem;
  --content-padding: 0.618rem 1.618rem;
  --content-max-width: 800px;
}
body.dark-mode {
  --bg-color: #1a1a1a;
  --text-color: #bcbcbc;
  --control-bg: rgba(255,255,255,0.1);
  --control-color: #a0a0a0;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "黑体", "PingFang SC", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  height: 100vh;
  overflow: hidden;
  transition: var(--transition);
}
.reader {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--reader-padding);
  overflow: hidden;
}
.content {
  font-size: 200%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  height: 100%;
  overflow-y: auto;
  padding: var(--content-padding);
  background-color: rgba(0,0,0,0.05);
  border-radius: 1rem;
}
.chapter-bar{
  display: none;
  justify-content: space-between;
  position:absolute;
  top:50vh;
  width: 100%;
  transition: var(--transition);
  pointer-events:none;
}
.chapter-always{display: flex;}
.chapter-item{
  z-index: 1000;
  top:0;
  font-size: 30px;
  display: flex;
  width: auto;
  height: auto;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap:30px;
}
.chapter-button{
  background:var(--control-bg);
  color: var(--control-color);
  transition: var(--transition);
  width: 50px;
  height: 50px;
  margin: 10px;
  border-radius:50%;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: initial;
}
.bars{
  border: var(--control-bg) 0.1236rem solid;
  border-radius: 1.98rem;
  width:100%;
  height:auto;
  padding:1.236rem;
  margin:1rem 0 1rem;
}
a{
  color:var(--text-color);
  transition: var(--transition);
}
a:hover{
  color:#fff;
}
@media (min-width: 942px) {
  .chapter-bar{display:flex}
}
@media (min-width: 1200px) {
  .chapter-bar{top:calc(50vh - 5rem);}
  .chapter-button{width: 70px;height: 70px;margin: 30px;}
}