@import url('https://cdn.staticfile.org/lxgw-wenkai-screen-webfont/1.6.0/lxgwwenkaiscreen.css');

:root {
  --md-text-font: 'LXGW WenKai Screen';
  --md-code-font: 'LXGW WenKai Screen';
  --post-section-color: #c76600;
  --post-subsection-color: #079321;
}

[data-md-color-scheme="slate"] {
  --post-section-color: #f0a24a;
  --post-subsection-color: #63c878;
}

* {
  /* Screen version */
  font-family: 'LXGW WenKai Screen', sans-serif;
}

.md-typeset code,
.md-typeset pre,
.md-typeset kbd,
.highlight,
.highlight code,
.highlight pre {
  font-family: 'LXGW WenKai Screen', sans-serif !important;
}

.post-title {
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  line-height: 1.25;
}

.post-date {
  display: inline-block;
  margin: 0.12rem 0 0.35rem;
  font-size: 0.8em;
  text-decoration: underline;
}

.post-meta {
  font-size: 0.8em;
  text-decoration: underline;
  text-align: right;
}

.post-header {
  margin: 0 0 1rem;
}

.post-header-title {
  margin: 0 0 0.3rem;
  line-height: 1.18;
}

.post-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.9rem;
  margin: 0;
  font-size: 0.82rem;
  color: var(--md-default-fg-color--light);
}

.post-header-date {
  color: inherit;
  white-space: nowrap;
}

.post-share-button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.24rem;
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 22%, transparent);
  border-radius: 999px;
  padding: 0.12rem 0.42rem;
  background: color-mix(in srgb, var(--md-primary-fg-color) 7%, transparent);
  color: var(--md-primary-fg-color);
  font: inherit;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, opacity 0.18s ease;
}

.post-share-button::before {
  content: "";
  width: 0.78rem;
  height: 0.78rem;
  flex: 0 0 0.78rem;
  background-color: currentColor;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.9' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='18' cy='5' r='2.4'/%3E%3Ccircle cx='6' cy='12' r='2.4'/%3E%3Ccircle cx='18' cy='19' r='2.4'/%3E%3Cpath d='M8.1 11l7.7-4.4M8.1 13l7.7 4.4'/%3E%3C/svg%3E") center / contain no-repeat;
}

.post-share-button:hover {
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 42%, transparent);
  background: color-mix(in srgb, var(--md-primary-fg-color) 12%, transparent);
  color: var(--md-primary-fg-color);
}

.post-share-button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--md-primary-fg-color) 34%, transparent);
  outline-offset: 2px;
}

.post-share-button[disabled] {
  cursor: default;
  opacity: 0.7;
}

.post-entry p {
  margin: 0.28rem 0 !important;
  line-height: 1.55;
}

.post-excerpt {
  display: block;
}

.post-entry {
  margin: 0.2rem 0 0.4rem;
}

.md-typeset hr {
  margin: 0.8rem 0;
}

.post-entry img,
.post-entry figure,
.post-excerpt-image {
  display: none !important;
}

.post-read-more {
  font-weight: 600;
}

/* More space at the bottom of the page */
.md-main__inner {
  margin-bottom: 1.5rem;
}

/* Article typography: clear song/section hierarchy and relaxed lyric rhythm. */
.md-typeset h2 {
  color: var(--post-section-color);
  font-size: 1.65em;
  font-weight: 700;
  line-height: 1.25;
  margin: 1.8em 0 0.8em;
}

.md-typeset h3 {
  color: var(--post-subsection-color);
  font-size: 1.35em;
  font-weight: 700;
  line-height: 1.3;
  margin: 1.5em 0 0.75em;
}

.md-typeset p,
.md-typeset blockquote {
  line-height: 1.65;
}

.md-typeset p {
  margin: 1.35em 0;
}

/***解决公式显示异常问题***/
/* 数学公式整体颜色跟正文一致 */
.katex,
.katex-display,
mjx-container {
  color: var(--md-default-fg-color);
}

/* 行内公式：略微放大即可 */
.katex {
  font-size: 1.02em;
  line-height: 1.4;
}

/* 块级公式容器：允许横向滚动，避免被裁切 */
.katex-display,
mjx-container[display="true"] {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  margin: 1em 0;
  padding: 0.25em 0 0.45em;
  line-height: 1.6;
  box-sizing: border-box;
}

/* 块级公式本体：不要再放大 */
.katex-display > .katex {
  display: inline-block;
  font-size: 1em;
  line-height: 1.5;
  white-space: nowrap;
  max-width: none;
}

/* MathJax 兼容 */
mjx-container {
  font-size: 1.02em !important;
  line-height: 1.4 !important;
}

mjx-container[display="true"] {
  font-size: 1em !important;
}

/* Mobile article table of contents */
.article-toc[hidden] {
  display: none !important;
}

.article-toc {
  display: none;
}

body.article-toc-open {
  overflow: hidden;
}

/* 手机端进一步缩一点，优先保证完整显示 */
@media screen and (max-width: 768px) {
  .post-header {
    margin-bottom: 0.9rem;
  }

  .post-header-meta {
    font-size: 0.78rem;
    gap: 0.25rem 0.75rem;
  }

  .katex {
    font-size: 1em;
  }

  .katex-display > .katex,
  mjx-container[display="true"] {
    font-size: 0.92em !important;
  }

  .katex-display,
  mjx-container[display="true"] {
    margin: 0.9em 0;
    padding: 0.2em 0 0.5em;
  }

  .article-toc {
    display: block;
  }

  .article-toc-fab {
    appearance: none;
    position: fixed;
    right: 1rem;
    bottom: calc(1.1rem + env(safe-area-inset-bottom, 0px));
    z-index: 10;
    display: grid;
    width: 3.2rem;
    height: 3.2rem;
    place-items: center;
    border: 1px solid color-mix(in srgb, white 30%, transparent);
    border-radius: 50%;
    padding: 0;
    background: var(--md-primary-fg-color);
    box-shadow: 0 0.35rem 1.1rem color-mix(in srgb, black 28%, transparent);
    color: var(--md-primary-bg-color);
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
  }

  .article-toc-fab:active {
    transform: scale(0.94);
  }

  .article-toc-fab:focus-visible,
  .article-toc-search-toggle:focus-visible,
  .article-toc-close:focus-visible,
  .article-toc-content .md-nav__link:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--md-accent-fg-color) 48%, white);
    outline-offset: 3px;
  }

  .article-toc-fab-icon {
    width: 1.45rem;
    height: 1.45rem;
    background: currentColor;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 5.5A1.5 1.5 0 1 1 4 8a1.5 1.5 0 0 1 0-2.5ZM8 6h12v2H8V6ZM4 11a1.5 1.5 0 1 1 0 3 1.5 1.5 0 0 1 0-3Zm4 .5h12v2H8v-2ZM4 17a1.5 1.5 0 1 1 0 3 1.5 1.5 0 0 1 0-3Zm4 .5h12v2H8v-2Z'/%3E%3C/svg%3E") center / contain no-repeat;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 5.5A1.5 1.5 0 1 1 4 8a1.5 1.5 0 0 1 0-2.5ZM8 6h12v2H8V6ZM4 11a1.5 1.5 0 1 1 0 3 1.5 1.5 0 0 1 0-3Zm4 .5h12v2H8v-2ZM4 17a1.5 1.5 0 1 1 0 3 1.5 1.5 0 0 1 0-3Zm4 .5h12v2H8v-2Z'/%3E%3C/svg%3E") center / contain no-repeat;
  }

  .article-toc-backdrop {
    position: fixed;
    inset: 0;
    z-index: 11;
    background: color-mix(in srgb, black 46%, transparent);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
  }

  .article-toc-sheet {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 12;
    display: flex;
    flex-direction: column;
    max-height: min(76dvh, 34rem);
    border-radius: 1.15rem 1.15rem 0 0;
    padding: 0 1rem calc(1rem + env(safe-area-inset-bottom, 0px));
    background: var(--md-default-bg-color);
    box-shadow: 0 -0.5rem 1.8rem color-mix(in srgb, black 24%, transparent);
    color: var(--md-default-fg-color);
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(102%);
    transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.18s ease;
  }

  .article-toc[data-open="true"] .article-toc-fab {
    opacity: 0;
    pointer-events: none;
  }

  .article-toc[data-open="true"] .article-toc-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .article-toc[data-open="true"] .article-toc-sheet {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .article-toc-sheet-header {
    display: flex;
    min-height: 2.9rem;
    flex: 0 0 auto;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
  }

  .md-typeset .article-toc-sheet-title {
    margin: 0;
    color: var(--md-default-fg-color);
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.2;
  }

  .article-toc-sheet-actions {
    display: flex;
    align-items: center;
    gap: 0.1rem;
  }

  .article-toc-search-toggle,
  .article-toc-close {
    appearance: none;
    position: relative;
    width: 2.4rem;
    height: 2.4rem;
    border: 0;
    border-radius: 50%;
    padding: 0;
    background: transparent;
    color: var(--md-default-fg-color--light);
    cursor: pointer;
  }

  .article-toc-search-toggle {
    display: grid;
    place-items: center;
  }

  .article-toc-search-toggle[aria-expanded="true"] {
    background: color-mix(in srgb, var(--md-primary-fg-color) 11%, transparent);
    color: var(--md-primary-fg-color);
  }

  .article-toc-search-toggle-icon {
    width: 1.05rem;
    height: 1.05rem;
    background: currentColor;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9.5 3a6.5 6.5 0 1 0 4.03 11.6L19.94 21 21 19.94l-6.4-6.41A6.5 6.5 0 0 0 9.5 3Zm0 1.5a5 5 0 1 1 0 10 5 5 0 0 1 0-10Z'/%3E%3C/svg%3E") center / contain no-repeat;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9.5 3a6.5 6.5 0 1 0 4.03 11.6L19.94 21 21 19.94l-6.4-6.41A6.5 6.5 0 0 0 9.5 3Zm0 1.5a5 5 0 1 1 0 10 5 5 0 0 1 0-10Z'/%3E%3C/svg%3E") center / contain no-repeat;
  }

  .article-toc-close::before,
  .article-toc-close::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1.15rem;
    height: 2px;
    border-radius: 1px;
    background: currentColor;
  }

  .article-toc-close::before {
    transform: translate(-50%, -50%) rotate(45deg);
  }

  .article-toc-close::after {
    transform: translate(-50%, -50%) rotate(-45deg);
  }

  .article-toc-search {
    display: grid;
    flex: 0 0 auto;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.4rem;
    min-height: 2.15rem;
    margin: 0.55rem 0 0.2rem;
    border: 1px solid var(--md-default-fg-color--lightest);
    border-radius: 0.55rem;
    padding: 0 0.55rem;
    background: color-mix(in srgb, var(--md-default-fg-color) 4%, transparent);
  }

  .article-toc-search[hidden] {
    display: none !important;
  }

  .article-toc-search:focus-within {
    border-color: color-mix(in srgb, var(--md-primary-fg-color) 56%, transparent);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--md-primary-fg-color) 12%, transparent);
  }

  .article-toc-search-input {
    appearance: none;
    min-width: 0;
    height: 2rem;
    border: 0;
    padding: 0;
    outline: 0;
    background: transparent;
    color: var(--md-default-fg-color);
    font: inherit;
    font-size: 0.72rem;
    line-height: 1;
  }

  .article-toc-search-input::placeholder {
    color: var(--md-default-fg-color--lighter);
    opacity: 1;
  }

  .article-toc-search-status {
    color: var(--md-default-fg-color--lighter);
    font-size: 0.62rem;
    line-height: 1;
    white-space: nowrap;
  }

  .article-toc-content {
    min-height: 0;
    max-height: calc(min(76dvh, 34rem) - 4rem - env(safe-area-inset-bottom, 0px));
    flex: 1 1 auto;
    padding: 0.25rem 0 0.1rem;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .article-toc[data-search-open="true"] .article-toc-content {
    max-height: calc(min(76dvh, 34rem) - 6.6rem - env(safe-area-inset-bottom, 0px));
  }

  .article-toc-content .md-nav__list {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .article-toc-content .md-nav__list .md-nav__list {
    margin-left: 1.2rem;
    padding-left: 0.55rem;
  }

  .article-toc-content .md-nav__item {
    margin: 0 !important;
    padding: 0;
    list-style: none;
  }

  .article-toc-content > .md-nav__list > .md-nav__item + .md-nav__item {
    margin-top: 0.32rem !important;
  }

  .article-toc-content .md-nav__list .md-nav__list > .md-nav__item {
    position: relative;
  }

  .article-toc-content .md-nav__list .md-nav__list > .md-nav__item::before,
  .article-toc-content .md-nav__list .md-nav__list > .md-nav__item::after {
    content: "";
    position: absolute;
    left: -0.55rem;
    z-index: 0;
    background: color-mix(in srgb, var(--md-default-fg-color) 14%, transparent);
    pointer-events: none;
  }

  .article-toc-content .md-nav__list .md-nav__list > .md-nav__item::before {
    top: 50%;
    width: 0.42rem;
    height: 1px;
  }

  .article-toc-content .md-nav__list .md-nav__list > .md-nav__item::after {
    top: 0;
    bottom: 0;
    width: 1px;
  }

  .article-toc-content .md-nav__list .md-nav__list > .article-toc-item--visible-first::after {
    top: 50%;
  }

  .article-toc-content .md-nav__list .md-nav__list > .article-toc-item--visible-last::after {
    bottom: 50%;
  }

  .article-toc-content .md-nav__list .md-nav__list >
    .article-toc-item--visible-first.article-toc-item--visible-last::after {
    display: none;
  }

  .article-toc-content .md-nav__link {
    display: flex;
    min-height: 2rem;
    align-items: center;
    margin: 0;
    border-radius: 0.4rem;
    padding: 0.2rem 0.45rem;
    color: var(--md-default-fg-color--light);
    font-size: 0.75rem;
    line-height: 1.25;
  }

  .article-toc-content .md-nav__list .md-nav__list .md-nav__link {
    position: relative;
    z-index: 1;
    min-height: 1.7rem;
    padding: 0.1rem 0.38rem;
    font-size: 0.67rem;
  }

  .article-toc-content .md-nav__link:hover,
  .article-toc-content .md-nav__link--active,
  .article-toc-content .article-toc-current {
    background: color-mix(in srgb, var(--md-primary-fg-color) 10%, transparent);
    color: var(--md-primary-fg-color);
  }

  .article-toc-content .article-toc-current {
    font-weight: 600;
  }

  .article-toc-empty {
    margin: 1.25rem 0 !important;
    color: var(--md-default-fg-color--lighter);
    font-size: 0.72rem;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-toc-fab,
  .article-toc-backdrop,
  .article-toc-sheet {
    transition: none !important;
  }
}