/* ==============================
   参数设置（参考来自 ShokaX 设置）
   ============================== */
/* ==============================
   osu-container：整体容器
   ============================== */
.osu-container {
  position: fixed;
  top: 11.5%;
  left: 2.5rem;
  width: calc(100vw - 5rem);
  height: 70%;
  z-index: 999;
  background: var(--grey-1-a5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  display: block;
  border: 2px solid var(--grey-3);
  border-radius: 1rem;
  box-shadow: 0 0.25rem 0.75rem var(--box-bg-shadow);
  transition: opacity 0.45s ease, transform 0.45s ease;
  will-change: opacity, transform;
}
.osu-container .osu-container.show {
  opacity: 1;
}
.osu-container #osu-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 1002;
  width: 2.2rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey-0);
  opacity: 1;
  border-radius: 50%;
  border: 0.08rem solid var(--grey-0-a6, rgba(255,255,255,0.58));
  background: var(--grey-9-a9, rgba(26,20,34,0.92));
  box-shadow: 0 0.25rem 0.75rem rgba(0,0,0,0.55), 0 0 0.35rem rgba(0,0,0,0.4);
  transition: transform 0.25s ease, background-color 0.25s ease;
}
.osu-container #osu-close:hover {
  transform: translateY(-0.125rem) scale(1.06);
  background: var(--color-red-a3);
}
@media (max-width: 820px) {
  .osu-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 60%;
    border-radius: 1rem 1rem 0 0;
    pointer-events: none;
    z-index: 11;
    box-shadow: inset 0 0.4rem 1.05rem rgba(255,250,242,0.24), inset 0 -0.08rem 0 rgba(255,255,255,0.18);
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-container {
    top: 7.1%;
    height: 78%;
    border-radius: 0.6rem;
    overflow: visible;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-container::after {
    border-radius: 0.6rem 0.6rem 0 0;
  }
}
.osu-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--bg-url, none);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0;
  filter: blur(6px); /* 这里改为 filter */
  transition: opacity 0.5s ease;
}
@media (max-width: 820px) {
  .osu-container::before {
    margin-top: 40%;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-container::before {
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,0.15) 10%, rgba(0,0,0,0.5) 24%, rgba(0,0,0,0.82) 40%, #000 58%);
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,0.15) 10%, rgba(0,0,0,0.5) 24%, rgba(0,0,0,0.82) 40%, #000 58%);
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
  }
}
.osu-container.show-bg::before {
  opacity: 0.3; /* fade-in */
  filter: blur(6px); /* 模糊背景图 */
}
/* ==============================
   osu-wheel：轮盘主体
   ============================== */
.osu-wheel {
  position: absolute;
  width: 70%;
  height: 100%;
  overflow: hidden;
}
@media (max-width: 820px) {
  .osu-wheel {
    bottom: 0%;
    width: 100%;
    height: 40%;
    border: none;
    border-radius: 0 0 1rem 1rem;
    box-shadow: inset 0 0 0.6rem var(--box-bg-shadow);
    -webkit-mask-image: none;
    mask-image: none;
    z-index: 13;
  }
}
@media (max-width: 820px) {
  .osu-wheel::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 0.18rem solid var(--grey-6-a2);
    border-radius: 0 0 1rem 1rem;
    box-shadow: 0 0 0.45rem var(--grey-6-a2);
    pointer-events: none;
    z-index: 120;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-wheel {
    border-radius: 0 0 0.6rem 0.6rem;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-wheel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2.2rem;
    background: linear-gradient(to bottom, var(--grey-0-a7), rgba(0,0,0,0));
    pointer-events: none;
    z-index: 119;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-wheel::after {
    border-radius: 0 0 0.6rem 0.6rem;
  }
}
/* ==============================
   osu-timeline：底部时间滑杆
   ============================== */
.osu-timeline {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  width: calc(62% - 2rem);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 180;
  padding: 0.35rem 0.55rem;
  border-radius: 0.7rem;
  background: var(--grey-1-a6);
  backdrop-filter: blur(0.3rem);
  -webkit-backdrop-filter: blur(0.3rem);
  box-shadow: 0 0.15rem 0.45rem var(--box-bg-shadow);
  pointer-events: auto;
  touch-action: pan-x;
}
.osu-timeline span.label {
  display: block;
  border: 0;
  border-radius: 0;
  padding: 0;
  margin: 0;
  background: transparent;
  box-shadow: none;
  font-family: inherit;
  font-size: 0.72rem;
  color: var(--grey-5);
  white-space: nowrap;
  line-height: 1;
  letter-spacing: 0.02em;
  user-select: none;
}
.osu-timeline #osu-timeline-slider {
  flex: 1 1 auto;
  width: 100%;
  height: 0.9rem;
  appearance: none;
  background: transparent;
  outline: none;
  cursor: pointer;
}
.osu-timeline #osu-timeline-slider::-webkit-slider-runnable-track {
  height: 0.34rem;
  border-radius: 999px;
  background: linear-gradient(to right, var(--color-aqua-a5), var(--color-pink-a5));
  box-shadow: inset 0 0 0 0.06rem var(--grey-4-a5);
}
.osu-timeline #osu-timeline-slider::-webkit-slider-thumb {
  appearance: none;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: -0.3rem;
  border-radius: 50%;
  background: linear-gradient(to right, var(--color-pink), var(--color-orange));
  border: 0.1rem solid var(--grey-0-a8);
  box-shadow: 0 0 0.35rem var(--color-pink-a5);
}
.osu-timeline #osu-timeline-slider::-moz-range-track {
  height: 0.34rem;
  border-radius: 999px;
  background: linear-gradient(to right, var(--color-aqua-a5), var(--color-pink-a5));
  box-shadow: inset 0 0 0 0.06rem var(--grey-4-a5);
}
.osu-timeline #osu-timeline-slider::-moz-range-thumb {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: linear-gradient(to right, var(--color-pink), var(--color-orange));
  border: 0.1rem solid var(--grey-0-a8);
  box-shadow: 0 0 0.35rem var(--color-pink-a5);
}
@media (max-width: 820px) {
  .osu-timeline {
    width: calc(100% - 0.8rem);
    left: 0.4rem;
    bottom: 0.5rem;
    padding: 0.25rem 0.4rem;
    gap: 0.35rem;
  }
  .osu-timeline span.label {
    font-size: 0.6rem;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .osu-timeline {
    left: auto;
    right: 0.3rem;
    bottom: auto;
    top: calc(60% + 0.75rem);
    transform: translateY(0);
    width: 0.75rem;
    height: calc(40% - 1.2rem);
    padding: 0.165rem 0.075rem;
    border-radius: 999px;
    flex-direction: column;
    justify-content: center;
    gap: 0.15rem;
    touch-action: none;
    z-index: 260;
  }
  .osu-timeline span.label {
    font-size: 0.6rem;
    line-height: 1;
  }
  .osu-timeline span.label.left {
    order: 3;
  }
  .osu-timeline span.label.right {
    order: 1;
  }
  .osu-timeline #osu-timeline-slider {
    order: 2;
    width: 0.255rem;
    height: 100%;
    writing-mode: vertical-lr;
    direction: rtl;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background: transparent;
    accent-color: transparent;
    border: 0;
    outline: none;
    box-shadow: none;
    touch-action: none;
  }
  .osu-timeline #osu-timeline-slider::-webkit-slider-runnable-track {
    width: 0.165rem;
    height: 100%;
    margin: 0 auto;
    background: transparent;
    box-shadow: none;
    border: 0;
  }
  .osu-timeline #osu-timeline-slider::-webkit-slider-thumb {
    appearance: none;
    width: 0.72rem;
    height: 0.72rem;
    margin-left: -0.2775rem;
    margin-top: 0;
    border-radius: 50%;
    background: linear-gradient(to right, var(--color-pink), var(--color-orange));
    border: 0.1rem solid var(--grey-0-a8);
    box-shadow: 0 0 0.35rem var(--color-pink-a5);
  }
  .osu-timeline #osu-timeline-slider::-moz-range-track {
    width: 0.165rem;
    height: 100%;
    margin: 0 auto;
    background: transparent;
    box-shadow: none;
    border: 0;
  }
  .osu-timeline #osu-timeline-slider::-moz-range-progress {
    background: transparent;
    box-shadow: none;
    border: 0;
  }
  .osu-timeline #osu-timeline-slider::-moz-range-thumb {
    width: 0.72rem;
    height: 0.72rem;
    border-radius: 50%;
    background: linear-gradient(to right, var(--color-pink), var(--color-orange));
    border: 0.1rem solid var(--grey-0-a8);
    box-shadow: 0 0 0.35rem var(--color-pink-a5);
  }
}
/* ==============================
   track：每条音乐条目
   ============================== */
.track {
  position: absolute;
  transform-origin: left center; /* 左边缘中间 */
  transition: transform 0.2s;
  width: 90%;
  height: 9rem;
  display: flex;
  align-items: center; /* 垂直居中 */
  justify-content: flex-start; /* 左对齐 */
  overflow: hidden;
  background-color: var(--grey-3-a6);
  backdrop-filter: blur(0.375rem);
  -webkit-backdrop-filter: blur(0.375rem);
  border-radius: 0 0.375rem 0.375rem 0;
  will-change: transform;
  backface-visibility: hidden;
/* inactive 禁用点击 */
/* 灰色遮罩 */
/* active 状态 */
}
.track a {
  pointer-events: none;
}
.track::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(18,18,24,0.82);
  opacity: calc(1 - var(--track-brightness, 0.75));
  transition: opacity 0.3s ease;
  pointer-events: none; /* 遮罩不挡交互 */
  z-index: 5;
}
.track.active {
  box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.12), 0 0 1.25rem 0.5rem var(--color-pink-a3);
/* track 内 a 可点击 */
}
.track.active a {
  pointer-events: auto;
}
@media (max-width: 820px) {
  .track {
    width: 95%;
    height: 5.5rem;
  }
}
/* 异步切换 source 的过渡态：只隐藏内容层，不清空容器 */
.track .track-content,
.track .track-image,
.track .track-meta-html {
  opacity: 1;
  transition: opacity var(--track-reveal-ms, 220ms) ease;
}
.track.is-content-hidden .track-content,
.track.is-content-hidden .track-image,
.track.is-content-hidden .track-meta-html {
  transition: none !important;
  opacity: 0 !important;
}
/* panel 开关阶段：关闭条目位移动画，避免延迟拖影 */
.osu-container.is-toggling .track {
  transition: none !important;
}
/* ==============================
   track-image：条目图片
   ============================== */
.track-image {
  display: inline-block;
  width: 30%;
  height: 100%;
  padding: 0.2rem;
  position: relative;
  overflow: hidden;
  vertical-align: top;
}
.track-image img {
  opacity: 0.8;
  border-radius: 0.375rem;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
@media (max-width: 820px) {
  .track-image {
    display: none;
  }
}
/* ==============================
   track-content：条目内容容器
   ============================== */
.track-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70%;
  height: 100%;
  box-sizing: border-box;
  overflow: hidden;
  margin-left: 0.3rem;
  margin-right: 0.3rem;
}
@media (max-width: 820px) {
  .track-content {
    margin-left: auto;
    width: 100%;
  }
}
/* ==============================
   track-cats-container：条目标签分类信息
   ============================== */
.track-content .track-cats-container {
  margin-left: auto;
  margin-top: auto;
  font-size: 0.75rem;
  line-height: 1.2rem;
  color: var(--grey-5);
}
.track-content .track-cats-container .meta {
  white-space: nowrap; /* 不允许换行 */
  overflow: hidden; /* 超出隐藏 */
}
@media (max-width: 820px) {
  .track-content .track-cats-container {
    font-size: 0.6rem;
    line-height: 0.7rem;
  }
}
/* ==============================
   track-title：标题
   ============================== */
.track-content .track-title {
  height: 2.25rem;
  display: flex;
  position: relative;
  overflow: hidden;
  width: 100%;
  min-width: 0;
  margin-left: auto;
  align-items: center;
  justify-content: flex-end;
  color: var(--color-red);
}
.track-content .track-title a {
  position: absolute;
  right: 0.03rem;
  top: 50%;
  transform: translateY(-50%);
  display: block;
  width: auto;
  max-width: calc(100% - 0.03rem);
  min-width: 0;
  box-sizing: border-box;
  text-align: right;
  direction: ltr;
  font-size: 1.5rem;
  font-weight: bold;
  line-height: 2.625rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
}
@media (max-width: 820px) {
  .track-content .track-title a {
    font-size: 0.9rem;
    line-height: 1rem;
    margin-top: 0;
  }
}
@media (max-width: 820px) {
  .track-content .track-title {
    height: 1.5rem;
  }
}
/* ==============================
   track-description：简介
   ============================== */
.track-content .track-description {
  font-size: 0.9rem;
  line-height: 1.2rem;
  width: 100%;
  text-align: right;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 820px) {
  .track-content .track-description {
    font-size: 0.6rem;
    line-height: 0.8rem;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-content .track-description {
    padding-left: 0.3rem;
    box-sizing: border-box;
  }
}
/* ==============================
   track-meta-container：条目 Meta 信息
   ============================== */
.track-content .track-meta-container {
  display: flex;
  height: 1.2rem;
  margin-left: auto;
  align-items: center;
  color: var(--grey-5);
}
.track-content .track-meta-container .meta {
  white-space: nowrap; /* 不允许换行 */
  overflow: hidden; /* 超出隐藏 */
}
.track-content .track-meta-container .meta .item {
  margin-left: 0.5rem;
  font-size: 0.75rem;
  line-height: 1.2rem;
}
@media (max-width: 820px) {
  .track-content .track-meta-container .meta .item {
    font-size: 0.6rem;
    line-height: 0.7rem;
  }
}
@media (max-width: 820px) {
  .track-content .track-meta-container {
    height: 0.7rem;
  }
}
/* ==============================
   track-meta-html：Meta 完整信息容器
   ============================== */
.track .track-meta-html {
  display: none;
}
/* =============================================================================================================== */
/* ==============================
   track-detail：右侧详情区域
   ============================== */
.track-detail {
  --track-detail-fade-ms: 180ms;
  --track-detail-fade-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --track-detail-shift-x: 36px;
  background: var(--grey-0-a7);
  position: absolute;
  right: 0%;
  width: 38%;
  height: 100%; /* 整体撑满容器 */
  overflow: visible;
  display: block;
  border: 0.5rem solid var(--grey-6-a2);
  border-radius: 1rem;
  gap: 0;
  z-index: 1;
/* 动画效果 */
  opacity: 1;
  transform: translateX(0);
  transition-property: opacity, transform;
  transition-duration: var(--track-detail-fade-ms), var(--track-detail-fade-ms);
  transition-timing-function: var(--track-detail-fade-ease), var(--track-detail-fade-ease);
  transition-delay: 0ms, 0ms;
/* ==============================
     fade-out / fade-in 动画类
     ============================== */
/* 进入前锁：任何中途切换都先锁在隐藏态，避免闪现 */
/* 响应式 */
}
.track-detail.fade-out {
  opacity: 0;
  transform: translateX(var(--track-detail-shift-x)); /* 向右淡出 */
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-detail.fade-out {
    transform: translateX(0);
  }
}
.track-detail.fade-in {
  opacity: 1;
  transform: translateX(0); /* 从右淡入 */
}
.track-detail.pending-lock {
  opacity: 0;
  transform: translateX(var(--track-detail-shift-x));
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-detail.pending-lock {
    transform: translateX(0);
  }
}
@media (max-width: 820px) {
  .track-detail {
    width: 100%;
    height: 60%;
    border: none;
    border-radius: 1rem 1rem 0 0;
    overflow: hidden;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-detail {
    border-radius: 0.6rem 0.6rem 0 0;
    overflow: visible;
    z-index: 220;
  }
}
/* ==============================
   track-cover：封面图
   ============================== */
.track-cover {
  position: relative;
  top: 0;
  left: 0;
  width: 100%;
  height: 30%; /* 3:7 高度比例 */
  overflow: hidden;
  border-radius: 1rem 1rem 0 0;
/* 底部渐变透明效果 */
  -webkit-mask-image: linear-gradient(to bottom, #000 90%, rgba(0,0,0,0) 100%);
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: cover;
  mask-image: linear-gradient(to bottom, #000 90%, rgba(0,0,0,0) 100%);
  mask-repeat: no-repeat;
  mask-size: cover;
}
.track-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 1rem 1rem 0 0;
  pointer-events: none; /* 默认禁止点击 */
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-cover {
    border-radius: 0.6rem 0.6rem 0 0;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-cover img {
    border-radius: 0.6rem 0.6rem 0 0;
  }
}
/* ==============================
   track-info-title：标题
   ============================== */
.track-cover .track-info-title {
  position: absolute;
  width: 95%;
  top: 35%; /* 垂直居中 */
  left: 50%; /* 水平居中 */
  transform: translate(-50%, -50%);
  color: var(--header-text-color);
  font-size: 2.5rem;
  line-height: 3.2rem;
  font-weight: bold;
  text-align: center;
/* 文字描边 */
  -webkit-text-stroke: 0.4rem #000;
  paint-order: stroke fill;
/* 多行省略号 */
  display: -webkit-box; /* 盒子模型 */
  -webkit-box-orient: vertical; /* 垂直布局 */
  -webkit-line-clamp: 2; /* 限制最多两行 */
  overflow: hidden; /* 超出隐藏 */
  text-overflow: ellipsis; /* 省略号 */
  word-break: break-word; /* 避免长单词撑开 */
  opacity: 1;
  transition: opacity 0.22s ease;
}
@media (max-width: 820px) {
  .track-cover .track-info-title {
    top: 25%;
    font-size: 1.5rem;
    -webkit-text-stroke: 0.2rem #000;
    line-height: 2rem;
  }
}
.track-cover .track-info-title.track-text-pending {
  opacity: 0;
}
/* ==============================
   track-card：内容卡片
   ============================== */
.track-card {
  position: absolute;
  top: 30%; /* 位于封面下方 */
  left: 0;
  width: 100%;
  height: 70%;
  padding: 0.6rem 1rem 0.6rem 1rem;
  box-sizing: border-box;
  display: flex;
  flex-direction: column; /* 垂直排列内容 */
  min-height: 0;
}
@media (max-width: 820px) {
  .track-card {
    padding: 0.1rem 0.25rem 0.3rem 0.25rem;
  }
}
/* ==============================
   track-info-meta：Meta 信息
   ============================== */
.track-info-meta {
  display: flex;
  width: 100%;
  height: 1.2rem;
  align-items: center;
  text-align: center;
  justify-content: center;
  color: var(--grey-5);
}
.track-info-meta .meta {
  line-height: 0.9rem;
}
.track-info-meta .meta .item {
  margin-left: 0.5rem;
  padding: 0;
  font-size: 0.75rem;
}
@media (max-width: 820px) {
  .track-info-meta .meta .item {
    font-size: 0.5rem;
  }
}
@media (max-width: 820px) {
  .track-info-meta .meta {
    line-height: 0.6rem;
  }
}
/* ==============================
   track-info-description：描述
   ============================== */
.track-info-description {
  position: relative;
  font-size: 1rem;
  line-height: 1.2rem;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1 1 auto; /* 填充剩余空间 */
  min-height: 0;
  max-height: 100%;
  width: 100%;
  box-sizing: border-box;
  margin-top: 1rem;
  margin-bottom: 0;
  display: block;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
  overscroll-behavior: contain;
  scrollbar-gutter: stable both-edges;
  padding-bottom: 2.6rem;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 78%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 78%, transparent 100%);
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  opacity: 1;
  transition: opacity 0.22s ease;
}
.track-info-description p {
  margin: 0 0 0.35rem 0;
  line-height: inherit;
}
@media (max-width: 820px) {
  .track-info-description {
    margin-top: 0.2rem;
    margin-bottom: 0;
    font-size: 0.6rem;
    line-height: 0.75rem;
    padding-bottom: 2rem;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 74%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 74%, transparent 100%);
  }
  .track-info-description p {
    margin-bottom: 0.2rem;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-info-description {
    font-size: 0.52rem;
    line-height: 0.64rem;
    padding-bottom: 1.8rem;
  }
}
.track-info-description.track-text-pending {
  opacity: 0;
}
/* 仅供主题脚本探测使用，不参与 track 布局 */
#track-post-sentinel.post.block {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
}
/* track 内的 post 包裹容器：保留语义但不干扰布局 */
.track-detail .track-post-proxy.post.block {
  padding: 0 !important;
  margin: 0 !important;
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  max-height: 100%;
  overflow: hidden;
  box-sizing: border-box;
}
/* track-md 容器 */
.track-detail .track-info-description.track-md {
  --track-md-inline: 0.76rem; /* 正文 / note / 标题装饰 的统一左右基准 */
  --track-md-gap: 0.58rem; /* 标题文字与装饰伪元素间距 */
  display: block;
  white-space: normal;
  font-size: inherit;
  line-height: inherit;
  word-break: break-word;
  max-width: 100%;
  overflow-wrap: anywhere;
  padding-left: var(--track-md-inline);
  padding-right: var(--track-md-inline);
  scrollbar-width: none;
/* 水平状态：紧凑（但不激进） */
  font-size: 0.9em;
  line-height: 1.42;
/* 正文块左右边界统一 */
/* 标题居中 + 两侧装饰严格对称 */
}
.track-detail .track-info-description.track-md::-webkit-scrollbar {
  width: 0;
  height: 0;
}
.track-detail .track-info-description.track-md * {
  max-width: 100%;
  box-sizing: border-box;
}
.track-detail .track-info-description.track-md pre,
.track-detail .track-info-description.track-md .table-container,
.track-detail .track-info-description.track-md .katex-display {
  max-width: 100%;
  overflow: auto;
}
.track-detail .track-info-description.track-md p,
.track-detail .track-info-description.track-md li,
.track-detail .track-info-description.track-md blockquote,
.track-detail .track-info-description.track-md td,
.track-detail .track-info-description.track-md th {
  font-size: 0.94em;
}
.track-detail .track-info-description.track-md p,
.track-detail .track-info-description.track-md li,
.track-detail .track-info-description.track-md blockquote p,
.track-detail .track-info-description.track-md td,
.track-detail .track-info-description.track-md th,
.track-detail .track-info-description.track-md .note p,
.track-detail .track-info-description.track-md .note li {
  line-height: 1.42 !important;
}
.track-detail .track-info-description.track-md p,
.track-detail .track-info-description.track-md ul,
.track-detail .track-info-description.track-md ol,
.track-detail .track-info-description.track-md blockquote,
.track-detail .track-info-description.track-md table,
.track-detail .track-info-description.track-md pre {
  margin-left: 0;
  margin-right: 0;
}
.track-detail .track-info-description.track-md h1,
.track-detail .track-info-description.track-md h2,
.track-detail .track-info-description.track-md h3,
.track-detail .track-info-description.track-md h4,
.track-detail .track-info-description.track-md h5,
.track-detail .track-info-description.track-md h6 {
  font-size: 0.92em;
  line-height: 1.16;
  margin-top: 0.34rem;
  margin-bottom: 0.18rem;
  margin-left: 0 !important;
  margin-right: 0 !important;
  text-align: center;
}
.track-detail .track-info-description.track-md h1,
.track-detail .track-info-description.track-md h2 {
  width: 100%;
  box-sizing: border-box;
}
.track-detail .track-info-description.track-md h1,
.track-detail .track-info-description.track-md h2 {
  display: flex !important;
  align-items: center;
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}
.track-detail .track-info-description.track-md h1::before,
.track-detail .track-info-description.track-md h1::after {
  flex: 1 1 0;
  min-width: 0;
  height: 0.75rem;
}
.track-detail .track-info-description.track-md h1::before {
  margin-right: var(--track-md-gap);
}
.track-detail .track-info-description.track-md h1::after {
  margin-left: var(--track-md-gap);
}
.track-detail .track-info-description.track-md h2::before,
.track-detail .track-info-description.track-md h2::after {
  flex: 1 1 0;
  min-width: 0;
  border-top-width: 0.125rem;
}
.track-detail .track-info-description.track-md h2::before {
  margin-right: var(--track-md-gap);
}
.track-detail .track-info-description.track-md h2::after {
  margin-left: var(--track-md-gap);
}
.track-detail .track-info-description.track-md .note {
  font-size: 0.9em;
  line-height: 1.16;
  padding: 0.72rem 0.72rem 0.72rem 2rem;
}
.track-detail .track-info-description.track-md .note::before {
  top: 50%;
  left: 0.42rem;
  transform: translateY(-50%);
  font-size: 1rem;
  line-height: 1;
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-detail .track-info-description.track-md {
    --track-md-inline: 0.6rem;
    --track-md-gap: 0.46rem;
    font-size: 0.74em;
    line-height: 1.3;
  }
  .track-detail .track-info-description.track-md p,
  .track-detail .track-info-description.track-md li,
  .track-detail .track-info-description.track-md blockquote,
  .track-detail .track-info-description.track-md td,
  .track-detail .track-info-description.track-md th {
    font-size: 0.84em;
  }
  .track-detail .track-info-description.track-md p,
  .track-detail .track-info-description.track-md li,
  .track-detail .track-info-description.track-md blockquote p,
  .track-detail .track-info-description.track-md td,
  .track-detail .track-info-description.track-md th,
  .track-detail .track-info-description.track-md .note p,
  .track-detail .track-info-description.track-md .note li {
    line-height: 1.3 !important;
  }
  .track-detail .track-info-description.track-md h1,
  .track-detail .track-info-description.track-md h2,
  .track-detail .track-info-description.track-md h3,
  .track-detail .track-info-description.track-md h4,
  .track-detail .track-info-description.track-md h5,
  .track-detail .track-info-description.track-md h6 {
    font-size: 0.82em;
    line-height: 1.08;
    margin-top: 0.22rem;
    margin-bottom: 0.1rem;
  }
  .track-detail .track-info-description.track-md h1::before,
  .track-detail .track-info-description.track-md h1::after {
    height: 0.56rem;
  }
  .track-detail .track-info-description.track-md h1::before {
    margin-right: var(--track-md-gap);
  }
  .track-detail .track-info-description.track-md h1::after {
    margin-left: var(--track-md-gap);
  }
  .track-detail .track-info-description.track-md h2::before,
  .track-detail .track-info-description.track-md h2::after {
    border-top-width: 0.09rem;
  }
  .track-detail .track-info-description.track-md h2::before {
    margin-right: var(--track-md-gap);
  }
  .track-detail .track-info-description.track-md h2::after {
    margin-left: var(--track-md-gap);
  }
  .track-detail .track-info-description.track-md h3::before,
  .track-detail .track-info-description.track-md h3::after {
    font-size: 0.82em;
  }
  .track-detail .track-info-description.track-md h3::before {
    margin-right: 0.32rem;
  }
  .track-detail .track-info-description.track-md h3::after {
    margin-left: 0.32rem;
  }
  .track-detail .track-info-description.track-md .anchor::before,
  .track-detail .track-info-description.track-md .anchor::after {
    font-size: 0.72em;
    line-height: 1;
  }
  .track-detail .track-info-description.track-md .note {
    font-size: 0.8em;
    line-height: 1.08;
    padding: 0.54rem var(--track-md-inline) 0.54rem 1.68rem;
  }
  .track-detail .track-info-description.track-md .note::before {
    top: 50%;
    left: 0.34rem;
    transform: translateY(-50%);
    font-size: 0.92rem;
    line-height: 1;
  }
}
/* ==============================
   track-info-readmore：阅读更多按钮
   ============================== */
.track-info-readmore {
  position: absolute;
  right: -0.45rem;
  bottom: -0.35rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-width: 7rem;
  height: 2.1rem;
  padding: 0.3rem 1rem;
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--grey-0);
  border: none;
  border-radius: 1rem 0;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  z-index: 30;
  transform-style: preserve-3d;
  transform: translateZ(2rem);
  backface-visibility: hidden;
  transition: transform 0.3s ease;
  background-image: linear-gradient(to right, var(--color-pink) 0, var(--color-orange) 100%);
}
.track-info-readmore::before {
  position: absolute;
  display: block;
  content: '';
  height: calc(100% - 1rem);
  width: calc(100% - 1rem);
  transform-style: preserve-3d;
  transform: translateZ(-2rem);
  backface-visibility: hidden;
  border-radius: 5rem;
  left: 0.5rem;
  top: 0.8rem;
  box-shadow: 0 0 0.6rem 0.6rem var(--color-pink-a3);
  background-color: var(--color-pink-a3);
  z-index: -1;
  transition: transform 0.3s ease;
}
@media (max-width: 820px) {
  .track-info-readmore {
    min-width: 5.5rem;
    height: 1.6rem;
    font-size: 0.75rem;
    padding: 0.2rem 0.75rem;
    right: 0.1rem;
    bottom: 0.1rem;
    border-radius: 1rem 0 1rem 0;
  }
}
@media (max-width: 820px) and (orientation: portrait) {
  .track-info-readmore {
    right: -0.4rem;
    bottom: -0.6rem;
    z-index: 2000;
  }
}
.track-info-readmore:hover {
  transform: translateZ(2.5rem);
}
.track-info-readmore:hover::before {
  transform: translateZ(-2.5rem);
}
.anchor::before,
.anchor::after {
  content: none !important;
  display: none !important;
}