/* Blog and article refinements */

:root {
  --site-bg: #f2f6ef;
  --site-surface: #fbfcf8;
  --site-text: #2f382f;
  --site-muted: #728070;
  --site-border: #d8e1d2;
  --site-accent: #6f8f72;
  --site-accent-soft: #e5eee1;
  --site-warm: #87936f;
  --site-font: "Times New Roman", Times, "Songti SC", "SimSun", "Noto Serif CJK SC", serif;
  --mono-font: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.apple-content {
  box-sizing: border-box;
  width: 100%;
  max-width: 980px;
  margin: 2rem auto;
  padding: 0 1.25rem 3rem;
  color: var(--site-text);
  font-family: var(--site-font);
  line-height: 1.72;
  letter-spacing: 0;
}

.apple-blog-hero {
  margin-bottom: 1.5rem;
  padding: 0.75rem 0 1.25rem;
  background: transparent;
  border-bottom: 1px solid var(--site-border);
}

.apple-hero-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.apple-hero-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.apple-hero-text {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.apple-hero-title {
  margin: 0;
  color: #273226;
  font-family: var(--site-font);
  font-size: 2.35rem;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0;
}

.apple-hero-sub {
  max-width: 36rem;
  margin: 0;
  color: var(--site-muted);
  font-family: var(--site-font);
  font-size: 1rem;
  line-height: 1.55;
  letter-spacing: 0;
}

.apple-search {
  margin-bottom: 1.1rem;
}

.apple-search-controls {
  display: flex;
  gap: 0.65rem;
  align-items: center;
}

.apple-search-input {
  min-width: 0;
  flex: 1;
  padding: 0.78rem 0.9rem;
  color: var(--site-text);
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: 8px;
  font-family: var(--site-font);
  font-size: 1rem;
  letter-spacing: 0;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.apple-search-input:focus {
  outline: none;
  border-color: #aebfa8;
  box-shadow: 0 0 0 3px rgba(111, 143, 114, 0.16);
}

.apple-search-clear,
.apple-export-button {
  padding: 0.7rem 0.9rem;
  color: #415041;
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--site-font);
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.apple-search-clear:hover,
.apple-export-button:hover {
  color: #fff;
  background: var(--site-accent);
  border-color: var(--site-accent);
}

.apple-search-status {
  min-height: 1.5em;
  margin: 0.55rem 0 0;
  color: var(--site-muted);
  font-size: 0.9rem;
}

.apple-post-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.apple-post-card {
  display: block;
  padding: 1.1rem 1.15rem;
  color: inherit;
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: 8px;
  text-decoration: none !important;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.apple-post-card:hover {
  border-color: #c4d3bd;
  box-shadow: 0 12px 30px rgba(47, 56, 47, 0.08);
  transform: translateY(-1px);
}

.apple-post-card[hidden] {
  display: none !important;
}

.apple-post-card.is-search-hidden {
  display: none !important;
}

.apple-card-date {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--site-muted);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
}

.apple-card-title {
  margin: 0 0 0.45rem;
  color: #2d372d;
  font-size: 1.28rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
}

.apple-card-excerpt {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--site-muted);
  font-size: 0.96rem;
  line-height: 1.5;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.apple-article {
  max-width: 100%;
  margin-top: 0;
  padding-top: 1rem;
}

.apple-article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--site-border);
}

.apple-article-title {
  margin: 0 0 0.65rem;
  color: #273226;
  font-size: 2.35rem;
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0;
}

.apple-article-meta {
  color: var(--site-muted);
  font-size: 0.96rem;
  line-height: 1.5;
  letter-spacing: 0;
}

.apple-export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.apple-export-button {
  padding: 0.55rem 0.75rem;
}

.apple-recommendation-sidebar .profile_box {
  display: block;
}

.apple-recommendation-heading {
  margin-bottom: 0.9rem;
}

.apple-recommendation-kicker {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--site-accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.apple-recommendation-heading h3 {
  margin: 0;
  color: #273226;
  font-family: var(--site-font);
  font-size: 1.05rem;
  line-height: 1.4;
}

.apple-recommendation-heading p {
  margin: 0.45rem 0 0;
  color: var(--site-muted);
  font-family: var(--site-font);
  font-size: 0.86rem;
  line-height: 1.5;
}

.apple-recommendation-list {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: recommendations;
}

.apple-recommendation-list li {
  position: relative;
  min-height: 2.5rem;
  padding: 0.05rem 0 0.05rem 1.85rem;
  counter-increment: recommendations;
}

.apple-recommendation-list li::before {
  position: absolute;
  top: 0.1rem;
  left: 0;
  width: 1.3rem;
  height: 1.3rem;
  color: #526f55;
  background: var(--site-accent-soft);
  border-radius: 50%;
  content: counter(recommendations);
  font-family: var(--site-font);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.3rem;
  text-align: center;
}

.apple-recommendation-list a {
  color: #415041;
  font-family: var(--site-font);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
}

.apple-recommendation-list a:hover {
  color: var(--site-accent);
  text-decoration: underline;
}

@media (min-width: 1024px) {
  #main.main--post {
    display: grid;
    grid-template-columns: minmax(190px, 2.5fr) minmax(0, 9.5fr);
    gap: 2.5rem;
    align-items: start;
  }

  #main.main--post .sidebar {
    float: none;
    width: auto;
    margin: 0;
  }

  #main.main--post .page {
    float: none;
    width: auto;
    min-width: 0;
    margin: 0;
    padding: 0;
  }

  /* A long unbreakable equation must not enlarge the article grid item. */
  #main.main--post .page__inner-wrap,
  #main.main--post .page__content,
  #main.main--post .apple-article,
  #main.main--post .apple-article-body {
    min-width: 0;
  }
}

.apple-article-body {
  color: #2f382f;
  font-size: 1.08rem;
  line-height: 1.84;
  letter-spacing: 0;
}

.apple-article-body > :first-child {
  margin-top: 0;
}

.apple-article-body p,
.apple-article-body ul,
.apple-article-body ol,
.apple-article-body blockquote {
  margin: 1.05em 0;
}

.apple-article-body h2,
.apple-article-body h3,
.apple-article-body h4 {
  margin-top: 1.8em;
  margin-bottom: 0.55em;
  color: #273226;
  line-height: 1.32;
  letter-spacing: 0;
}

.apple-article-body h2 {
  font-size: 1.62em;
}

.apple-article-body h3 {
  font-size: 1.28em;
}

.apple-article-body a {
  color: var(--site-accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.apple-article-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.4rem auto;
  border: 1px solid var(--site-border);
  border-radius: 8px;
}

.apple-article-body blockquote {
  margin-left: 0;
  padding: 0.8rem 1rem;
  color: #435045;
  background: #eef4eb;
  border-left: 3px solid var(--site-accent);
  border-radius: 0 8px 8px 0;
}

.apple-article-body :not(pre) > code {
  padding: 0.12em 0.32em;
  background: #eef4eb;
  border: 1px solid var(--site-border);
  border-radius: 6px;
  font-family: var(--mono-font);
  font-size: 0.9em;
}

.apple-article-body pre {
  margin: 1.4rem 0;
  padding: 1rem;
  overflow-x: auto;
  background: #eef4eb;
  border: 1px solid var(--site-border);
  border-radius: 8px;
}

.apple-article-body pre code,
.apple-article-body code {
  font-family: var(--mono-font);
}

.apple-article-body ul,
.apple-article-body ol {
  padding-left: 1.35em;
}

.apple-article-body hr,
.apple-article-footer {
  margin: 2.5rem 0 0;
  padding-top: 1.25rem;
  border: 0;
  border-top: 1px solid var(--site-border);
}

.apple-back-link {
  color: var(--site-accent);
  font-weight: 600;
  text-decoration: none;
}

.apple-back-link:hover {
  text-decoration: underline;
}

.apple-share-button {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 1200;
  padding: 0.65rem 0.9rem;
  color: #fff;
  background: var(--site-accent);
  border: 0;
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(111, 143, 114, 0.24);
  cursor: pointer;
  font-family: var(--site-font);
  font-size: 0.95rem;
  letter-spacing: 0;
}

.apple-share-button:hover {
  background: #526f55;
}

.table-of-contents,
.toc,
.toc-toggle,
.toc-button,
.toc__toggle,
.js-toc,
.sidebar__toc,
.sidebar-toc,
.article-toc,
.float-toc,
.float-nav,
.post-toc,
#TableOfContents,
#toc,
.button--toc,
.anchor-toc,
.js-toc-toggle,
.js-toc-button {
  display: none !important;
  visibility: hidden !important;
  width: 0 !important;
  height: 0 !important;
  pointer-events: none !important;
}

.apple-article-body .MathJax_Display,
.page__content .MathJax_Display {
  display: block !important;
  margin: 1.25em 0 !important;
  overflow-x: auto;
}

.apple-article-body mjx-container,
.page__content mjx-container {
  max-width: 100%;
}

.apple-article-body mjx-container[display="true"],
.page__content mjx-container[display="true"] {
  display: block;
  margin: 1.4em 0 !important;
  padding: 0.2em 0;
}

/*
 * MathJax display equations use an intrinsic-width inner element.  Keeping
 * the scroll area outside that element makes overflow reliably measurable,
 * so a horizontal scrollbar is shown only when an equation is wider than the
 * article column.
 */
.apple-article-body .apple-math-scroll,
.page__content .apple-math-scroll {
  display: block;
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  margin: 1.4em 0;
  overflow-x: hidden;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: #aeb5ad transparent;
}

.apple-article-body .apple-math-scroll.is-overflowing,
.page__content .apple-math-scroll.is-overflowing {
  overflow-x: scroll;
}

.apple-article-body .apple-math-scroll::-webkit-scrollbar,
.page__content .apple-math-scroll::-webkit-scrollbar {
  height: 0.7rem;
}

.apple-article-body .apple-math-scroll::-webkit-scrollbar-thumb,
.page__content .apple-math-scroll::-webkit-scrollbar-thumb {
  background: #aeb5ad;
  border: 0.2rem solid transparent;
  border-radius: 999px;
  background-clip: content-box;
}

.apple-article-body .apple-math-scroll > mjx-container,
.page__content .apple-math-scroll > mjx-container {
  width: max-content;
  min-width: 100%;
  max-width: none;
  margin: 0 !important;
}

.apple-article-body .apple-math-scroll > mjx-container > mjx-math,
.page__content .apple-math-scroll > mjx-container > mjx-math {
  display: inline-block !important;
  box-sizing: border-box;
  width: max-content !important;
  min-width: 100%;
  text-align: center;
}

.apple-article-body .apple-math-scroll mjx-tag,
.page__content .apple-math-scroll mjx-tag {
  color: var(--site-muted);
  font-family: var(--site-font);
  font-size: 0.9em;
}

.apple-article-body div.highlighter-rouge:before,
.apple-article-body figure.highlight:before {
  display: none !important;
  content: none !important;
}

.apple-article-body div.highlighter-rouge .highlight,
.apple-article-body figure.highlight .highlight,
.apple-article-body pre,
.apple-article-body pre code {
  font-size: 1em !important;
  line-height: 1.75;
}

@media (min-width: 980px) {
  .apple-post-list {
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1.15rem;
  }
}

@media (max-width: 768px) {
  .apple-content {
    margin: 1.2rem auto;
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .apple-blog-hero {
    padding: 1.35rem 0;
  }

  .apple-hero-left {
    align-items: flex-start;
  }

  .apple-hero-title,
  .apple-article-title {
    font-size: 1.85rem;
    line-height: 1.18;
  }

  .apple-article-body {
    font-size: 1.02rem;
    line-height: 1.78;
  }

  .apple-share-button {
    right: 1rem;
    bottom: 1rem;
  }

  .apple-search-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .apple-search-clear {
    width: 100%;
  }
}

@media print {
  .masthead,
  .sidebar,
  .page__footer,
  .apple-share-button,
  .apple-article-footer,
  .apple-export-actions {
    display: none !important;
  }

  body,
  #main,
  .page,
  .page__inner-wrap,
  .page__content,
  .apple-content,
  .apple-article {
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #fff !important;
    color: #111 !important;
  }

  .apple-article-body {
    font-size: 11pt;
    line-height: 1.6;
  }
}