/* timeline-horizontal：横向时间轴 · 等宽均分 + 圆点按 i/(n-1) 定位 */
.wa-tl-horizontal.arco-timeline {
  display: flex;
  position: relative;
  width: 100%;
  max-width: none;
  margin-left: 0;
  margin-right: 0;
  overflow: visible;
  box-sizing: border-box;
  /* 圆点行高 + 下方绝对定位文案（标题+阶段）所需空间 */
  padding-bottom: 64px;
}

/* 贯穿轴线（首尾圆点中心之间） */
.wa-tl-horizontal.arco-timeline::before {
  content: '';
  position: absolute;
  top: 3px;
  right: 3px;
  left: 3px;
  z-index: 0;
  height: 1px;
  pointer-events: none;
  background: var(--color-neutral-3);
}

.wa-tl-horizontal .arco-timeline-item,
.wa-tl-horizontal .arco-timeline-item:last-child {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
  height: 6px;
  overflow: visible;
  --tl-p: 0;
}

/* 节点定位：2 */
.wa-tl-horizontal .arco-timeline-item:nth-child(1):nth-last-child(2) { --tl-p: 0; }
.wa-tl-horizontal .arco-timeline-item:nth-child(2):nth-last-child(1) { --tl-p: 1; }

/* 节点定位：3 */
.wa-tl-horizontal .arco-timeline-item:nth-child(1):nth-last-child(3) { --tl-p: 0; }
.wa-tl-horizontal .arco-timeline-item:nth-child(2):nth-last-child(2) { --tl-p: 0.5; }
.wa-tl-horizontal .arco-timeline-item:nth-child(3):nth-last-child(1) { --tl-p: 1; }

/* 节点定位：4 → 0 / 1/3 / 2/3 / 1 */
.wa-tl-horizontal .arco-timeline-item:nth-child(1):nth-last-child(4) { --tl-p: 0; }
.wa-tl-horizontal .arco-timeline-item:nth-child(2):nth-last-child(3) { --tl-p: 0.333333; }
.wa-tl-horizontal .arco-timeline-item:nth-child(3):nth-last-child(2) { --tl-p: 0.666667; }
.wa-tl-horizontal .arco-timeline-item:nth-child(4):nth-last-child(1) { --tl-p: 1; }

/* 节点定位：5 */
.wa-tl-horizontal .arco-timeline-item:nth-child(1):nth-last-child(5) { --tl-p: 0; }
.wa-tl-horizontal .arco-timeline-item:nth-child(2):nth-last-child(4) { --tl-p: 0.25; }
.wa-tl-horizontal .arco-timeline-item:nth-child(3):nth-last-child(3) { --tl-p: 0.5; }
.wa-tl-horizontal .arco-timeline-item:nth-child(4):nth-last-child(2) { --tl-p: 0.75; }
.wa-tl-horizontal .arco-timeline-item:nth-child(5):nth-last-child(1) { --tl-p: 1; }

.wa-tl-horizontal .arco-timeline-item-dot-wrapper {
  display: flex;
  width: 100%;
  justify-content: flex-start;
  overflow: visible;
  z-index: 1;
}

.wa-tl-horizontal .arco-timeline-item-last .arco-timeline-item-dot-wrapper {
  justify-content: flex-end;
}

/* 中间圆点：用 margin 推到 --tl-p（扣半宽 3px），避免用 transform 造成抖动 */
.wa-tl-horizontal .arco-timeline-item:not(:first-child):not(.arco-timeline-item-last) .arco-timeline-item-dot-content {
  margin-left: calc(var(--tl-p) * 100% - 3px);
}

.wa-tl-horizontal .arco-timeline-item-dot-line {
  display: none;
}

/* 文案绝对定位锚定圆点下：首左 / 中居中 / 尾右（末项用 right:0，避免 relative+right） */
.wa-tl-horizontal .arco-timeline-item-content-wrapper {
  position: absolute;
  top: 22px;
  left: 0;
  width: max-content;
  max-width: 100%;
  margin-top: 0;
  margin-left: 0;
  text-align: left;
}

.wa-tl-horizontal .arco-timeline-item:not(:first-child):not(.arco-timeline-item-last) .arco-timeline-item-content-wrapper {
  left: calc(var(--tl-p) * 100%);
  text-align: center;
  transform: translateX(-50%);
}

.wa-tl-horizontal .arco-timeline-item-last .arco-timeline-item-content-wrapper {
  right: 0;
  left: auto;
  text-align: right;
  transform: none;
}

.wa-tl-horizontal .arco-timeline-item-label {
  text-align: inherit;
}

body.wa-preview-embed .wa-embed__stage .wa-tl-horizontal {
  width: 100%;
}