@font-face {
  font-family: "Sarasa Mono Web";
  src: url("../fonts/sarasa/sarasa-mono-sc-regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Sarasa Mono Web";
  src: url("../fonts/sarasa/sarasa-mono-sc-bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

.article-single {
  width: min(1120px, calc(100% - 48px));
  padding: 72px 0 84px;
}

.article-header {
  max-width: 850px;
  margin: 0 auto;
  padding: 0 0 34px;
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.article-header h1 {
  max-width: 850px;
  margin: 12px auto 18px;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.16;
  letter-spacing: -0.035em;
  text-shadow: var(--heading-shadow-1), var(--heading-shadow-2), var(--heading-shadow-3);
}

.article-lede {
  max-width: 760px;
  margin: 0 auto 18px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
}

.article-meta .article-author {
  color: var(--text);
}

.article-meta .article-draft {
  padding: 1px 7px;
  border: 1px solid var(--focus);
  border-radius: 5px;
  color: var(--muted);
}

.article-author-block {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
  text-align: left;
}

.article-author-block > img {
  width: 76px;
  height: 76px;
  flex: 0 0 76px;
  border-radius: 50%;
  object-fit: cover;
}

.article-author-block > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.article-author-label {
  color: var(--muted);
  font-size: 10px;
  line-height: 1.2;
  text-transform: uppercase;
}

.article-author-block strong {
  margin-top: 2px;
  font-size: 15px;
}

.article-author-block small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.article-author-links {
  display: flex;
  gap: 9px;
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
}

.article-author-links a:hover {
  color: var(--text);
}

.article-body-layout {
  position: relative;
  max-width: 850px;
  margin: 0 auto;
  padding-top: 42px;
}

.article-main-column {
  min-width: 0;
}

.article-video {
  margin: 28px 0;
}

.article-video video {
  display: block;
  width: 100%;
  max-width: var(--article-video-max-width, 100%);
  max-height: var(--article-video-max-height, none);
  height: auto;
  margin-inline: auto;
  object-fit: contain;
  border-radius: 8px;
}

.article-video figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.article-series {
  margin: 8px 0 20px;
  overflow: hidden;
  padding-left: 20px;
  border: 0;
  border-radius: 8px;
  background: var(--transparent);
  color: var(--series-text);
  font-size: 13px;
}

.article-series-summary {
  margin-left: -20px;
  padding: 4px 0 4px 20px;
  background: var(--series-surface);
  color: var(--series-heading);
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  list-style-position: inside;
}

.article-series-summary::marker {
  color: var(--muted);
}

.article-series-list {
  padding: 0;
}

.article-series-item {
  margin-left: -20px;
  padding: 4px 0 4px 20px;
  border-left: 1px dotted var(--series-border);
  line-height: 1.55;
}

.article-series-item.is-current {
  color: var(--series-text);
  font-weight: 600;
}

.article-series a,
.article-tags a,
.article-related-heading a {
  color: var(--series-link);
}

.article-series a:hover,
.article-tags a:hover,
.article-related-heading a:hover {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content {
  max-width: 850px;
  margin-bottom: 54px;
  font-size: 17px;
  line-height: 1.82;
}

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

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content table,
.article-content pre {
  margin-top: 1.15em;
  margin-bottom: 1.15em;
}

.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
  scroll-margin-top: var(--site-header-height);
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.02em;
  text-shadow: var(--heading-shadow-1), var(--heading-shadow-2), var(--heading-shadow-3);
}

.article-content h2 {
  margin-top: 2.3em;
  margin-bottom: 0.85em;
  font-size: 28px;
}

.article-content h3 {
  margin-top: 1.9em;
  margin-bottom: 0.7em;
  font-size: 21px;
}

.article-content h4 {
  margin-top: 1.6em;
  margin-bottom: 0.55em;
  font-size: 18px;
}

.article-content h5 {
  margin-top: 1.4em;
  margin-bottom: 0.5em;
  font-size: 16px;
}

.article-content h6 {
  margin-top: 1.3em;
  margin-bottom: 0.45em;
  color: var(--muted);
  font-size: 14px;
}

.article-content a:not(.link-card) {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: var(--link-decoration);
  text-underline-offset: 3px;
}

.article-content a:not(.link-card):hover {
  color: var(--link-hover);
  text-decoration-color: currentColor;
}

.article-content .link-card {
  display: flex;
  min-height: var(--link-card-min-height, 128px);
  overflow: hidden;
  margin: 0;
  padding: 6px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--link-card-surface);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.article-content .link-card:hover {
  border-color: var(--accent-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-1px);
}

.article-content p:has(> .link-card) {
  margin: 1.4em 0;
}

.link-card-media {
  position: relative;
  display: grid;
  width: var(--link-card-media-width, 31%);
  height: var(--link-card-media-height, 116px);
  flex: 0 0 var(--link-card-media-basis, 144px);
  align-self: center;
  place-items: center;
  overflow: hidden;
  border-radius: var(--link-card-media-radius, 5px);
  background: var(--link-card-media-background, var(--link-card-media));
}

.article-content .link-card-media img {
  position: var(--link-card-image-position, static);
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  max-width: none;
  padding: var(--link-card-image-padding, 0);
  border: var(--link-card-image-border, 0);
  border-radius: var(--link-card-image-radius, 0);
  background: var(--link-card-image-background, var(--transparent));
  object-fit: var(--link-card-image-fit, contain);
}

.link-card--github {
  --link-card-media-width: 220px;
  --link-card-media-basis: 220px;
  --link-card-media-background: var(--transparent);
  --link-card-image-radius: 5px;
}

.link-card--ydisks,
.link-card--xunlei-pan {
  --link-card-media-width: 116px;
  --link-card-media-basis: 116px;
  --link-card-media-background: var(--transparent);
  --link-card-image-background: var(--transparent);
}

.link-card--baidu-pan,
.link-card--quark-pan {
  --link-card-media-width: 116px;
  --link-card-media-basis: 116px;
  --link-card-media-background: var(--transparent);
  --link-card-image-padding: 10px;
  --link-card-image-radius: 24px;
  --link-card-image-background: var(--link-card-icon-surface);
}

.link-card-body {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  padding: var(--link-card-body-padding, 14px 22px);
}

.link-card-kicker,
.link-card-footer {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: var(--link-card-meta-size, 13px);
}

.link-card-external-icon {
  font-size: 24px;
  line-height: 1;
}

.link-card-title {
  display: block;
  margin-top: var(--link-card-title-margin, 6px);
  color: var(--link-card-title);
  font-size: var(--link-card-title-size, 18px);
  line-height: 1.3;
}

.link-card-description {
  display: block;
  margin-top: var(--link-card-description-margin, 7px);
  color: var(--link-card-description);
  font-size: var(--link-card-description-size, 15px);
  line-height: 1.45;
}

.link-card-footer {
  justify-content: space-between;
  margin-top: var(--link-card-footer-margin, 8px);
}

.link-card-url {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-card-stat {
  flex: 0 0 auto;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--muted);
}

@media (max-width: 767.98px) {
  .article-content .link-card {
    --link-card-min-height: 104px;
    --link-card-body-padding: 10px 12px;
    --link-card-title-margin: 4px;
    --link-card-title-size: 16px;
    --link-card-description-margin: 4px;
    --link-card-description-size: 13px;
    --link-card-footer-margin: 5px;
    --link-card-meta-size: 11px;
  }

  .article-content .link-card {
    --link-card-media-width: 31%;
    --link-card-media-height: 92px;
    --link-card-media-basis: 90px;
  }

  .article-content .link-card--ydisks,
  .article-content .link-card--baidu-pan,
  .article-content .link-card--quark-pan,
  .article-content .link-card--xunlei-pan {
    --link-card-media-width: 92px;
    --link-card-media-basis: 92px;
  }

  .article-content .link-card--github {
    --link-card-media-width: 176px;
    --link-card-media-basis: 176px;
  }
}

.article-content ul,
.article-content ol {
  padding-left: 1.45em;
}

.article-content li + li {
  margin-top: 0.2em;
}

.article-content input[type="checkbox"]:not(:checked) {
  width: 13px;
  height: 13px;
  margin: 3px 3px 3px 4px;
  appearance: none;
  border: 1px solid var(--task-checkbox-unchecked-border);
  border-radius: 2px;
  background: var(--task-checkbox-unchecked-background);
  opacity: 1;
  vertical-align: middle;
}

.article-content blockquote {
  margin: 1.6em 0;
  padding: 0 0 0 1em;
  border-left: 4px solid var(--blockquote);
  color: var(--blockquote-text);
  font-style: italic;
  font-weight: 500;
}

.article-content img:not(.link-card-logo):not(.link-card-preview) {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.6em auto;
  border-radius: 8px;
}

.article-content > .highlight,
.article-content .highlight-wrapper {
  position: relative;
  overflow-x: auto;
  margin: 1.15em 0;
  border: 1px solid var(--code-border);
  border-radius: 14px;
  box-shadow: var(--shadow-code);
  font-family: "Sarasa Mono Web", "SF Mono", Monaco, Menlo, Consolas, monospace;
}

.article-content .code-copy {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 1;
  min-height: 28px;
  padding: 4px 18px;
  border: 0;
  border-radius: 0 0 0 6px;
  background: var(--code-muted);
  color: var(--text-inverse);
  cursor: pointer;
  font-size: 12px;
  line-height: 20px;
}

.article-content .code-copy:hover {
  filter: brightness(1.08);
}

.article-content > .highlight > .chroma,
.article-content .highlight-wrapper > .highlight,
.article-content .highlight-wrapper .chroma {
  background: var(--code-bg);
  color: var(--code-text);
}

.article-content > .highlight table.lntable,
.article-content .highlight-wrapper table.lntable {
  display: block;
  width: 100%;
  margin: 0;
  padding: 12px 16px;
  border-collapse: collapse;
  background: var(--code-bg);
  color: var(--code-text);
  font: inherit;
  line-height: 24px;
}

.article-content > .highlight td.lntd,
.article-content .highlight-wrapper td.lntd {
  padding: 0;
  border: 0;
  background: var(--code-bg);
  color: var(--code-text);
  vertical-align: top;
}

.article-content > .highlight td.lntd:first-child,
.article-content .highlight-wrapper td.lntd:first-child {
  width: 31px;
  padding-right: 16px;
  text-align: right;
}

.article-content > .highlight td.lntd:first-child pre,
.article-content .highlight-wrapper td.lntd:first-child pre {
  width: 31px;
}

.article-content > .highlight pre,
.article-content > .highlight .chroma pre,
.article-content .highlight-wrapper pre {
  overflow: visible;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: var(--code-bg);
  color: var(--code-text);
  font: 400 14px/24px "Sarasa Mono Web", "SF Mono", Monaco, Menlo, Consolas, monospace;
}

.article-content > .highlight code,
.article-content .highlight-wrapper code {
  padding: 0;
  background: var(--transparent);
  color: inherit;
  font: inherit;
}

.article-content > .highlight .ln,
.article-content > .highlight .lnt,
.article-content .highlight-wrapper .ln,
.article-content .highlight-wrapper .lnt {
  color: var(--code-muted);
}

.article-content > .highlight .hl,
.article-content > .highlight .lntd .hl,
.article-content .highlight-wrapper .hl,
.article-content .highlight-wrapper .lntd .hl {
  background: var(--code-highlight);
}

.article-content > .highlight .k,
.article-content > .highlight .kc,
.article-content > .highlight .kd,
.article-content > .highlight .kn,
.article-content > .highlight .kp,
.article-content > .highlight .kr,
.article-content > .highlight .kt,
.article-content .highlight-wrapper .k,
.article-content .highlight-wrapper .kc,
.article-content .highlight-wrapper .kd,
.article-content .highlight-wrapper .kn,
.article-content .highlight-wrapper .kp,
.article-content .highlight-wrapper .kr,
.article-content .highlight-wrapper .kt {
  color: var(--code-keyword);
  font-weight: 600;
}

.article-content > .highlight .nf,
.article-content > .highlight .fm,
.article-content > .highlight .nb,
.article-content > .highlight .nd,
.article-content > .highlight .ne,
.article-content .highlight-wrapper .nf,
.article-content .highlight-wrapper .fm,
.article-content .highlight-wrapper .nb,
.article-content .highlight-wrapper .nd,
.article-content .highlight-wrapper .ne {
  color: var(--code-function);
  font-weight: 600;
}

.article-content > .highlight .s,
.article-content > .highlight .sa,
.article-content > .highlight .sb,
.article-content > .highlight .sc,
.article-content > .highlight .dl,
.article-content > .highlight .sd,
.article-content > .highlight .s1,
.article-content > .highlight .s2,
.article-content > .highlight .se,
.article-content > .highlight .sh,
.article-content > .highlight .si,
.article-content > .highlight .sx,
.article-content > .highlight .sr,
.article-content > .highlight .ss,
.article-content .highlight-wrapper .s,
.article-content .highlight-wrapper .sa,
.article-content .highlight-wrapper .sb,
.article-content .highlight-wrapper .sc,
.article-content .highlight-wrapper .dl,
.article-content .highlight-wrapper .sd,
.article-content .highlight-wrapper .s1,
.article-content .highlight-wrapper .s2,
.article-content .highlight-wrapper .se,
.article-content .highlight-wrapper .sh,
.article-content .highlight-wrapper .si,
.article-content .highlight-wrapper .sx,
.article-content .highlight-wrapper .sr,
.article-content .highlight-wrapper .ss {
  color: var(--code-string);
}

.article-content > .highlight .m,
.article-content > .highlight .mb,
.article-content > .highlight .mf,
.article-content > .highlight .mh,
.article-content > .highlight .mi,
.article-content > .highlight .il,
.article-content > .highlight .mo,
.article-content > .highlight .l,
.article-content .highlight-wrapper .m,
.article-content .highlight-wrapper .mb,
.article-content .highlight-wrapper .mf,
.article-content .highlight-wrapper .mh,
.article-content .highlight-wrapper .mi,
.article-content .highlight-wrapper .il,
.article-content .highlight-wrapper .mo,
.article-content .highlight-wrapper .l {
  color: var(--code-number);
}

.article-content > .highlight .o,
.article-content > .highlight .ow,
.article-content > .highlight .p,
.article-content .highlight-wrapper .o,
.article-content .highlight-wrapper .ow,
.article-content .highlight-wrapper .p {
  color: var(--code-operator);
}

.article-content > .highlight .c,
.article-content > .highlight .ch,
.article-content > .highlight .cm,
.article-content > .highlight .c1,
.article-content > .highlight .cs,
.article-content > .highlight .cp,
.article-content > .highlight .cpf,
.article-content .highlight-wrapper .c,
.article-content .highlight-wrapper .ch,
.article-content .highlight-wrapper .cm,
.article-content .highlight-wrapper .c1,
.article-content .highlight-wrapper .cs,
.article-content .highlight-wrapper .cp,
.article-content .highlight-wrapper .cpf {
  color: var(--code-comment);
  font-style: italic;
}

.article-content code {
  padding: 0.12em 0.3em;
  border-radius: 4px;
  background: var(--soft);
  font-size: 0.9em;
}

.article-content mark {
  padding: 0.08rem 0.34rem;
  border-radius: 0.3rem;
  background: var(--mark-bg);
  color: var(--mark-text);
}

.article-content pre code {
  padding: 0;
  background: var(--transparent);
  font-size: inherit;
}

.article-content hr {
  margin: 2.4em 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.article-content table {
  display: block;
  overflow-x: auto;
  width: 100%;
  border-collapse: collapse;
}

.article-content th,
.article-content td {
  padding: 9px 12px;
  border: 1px solid var(--line);
  text-align: left;
}

.article-content th {
  background: var(--soft);
}

.article-toc {
  position: absolute;
  top: 42px;
  left: calc(100% + 42px);
  width: 220px;
}

.article-toc-inner {
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.article-toc-title {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.article-toc nav,
.article-toc ul {
  display: block;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  line-height: 1.55;
}

.article-toc ul ul {
  padding-left: 12px;
}

.article-toc li {
  margin: 5px 0;
}

.article-toc a {
  color: var(--muted);
}

.article-toc a:hover {
  color: var(--text);
}

.article-copyright {
  margin: 0 0 28px;
  padding: 20px;
  border: 1px solid var(--copyright-border);
  border-radius: 16px;
  background: var(--copyright-surface);
  box-shadow: var(--copyright-shadow);
}

.article-copyright h2 {
  margin: 0 0 14px;
  font-size: 18px;
}

.article-copyright-title {
  color: var(--copyright-title);
}

.article-copyright dl {
  margin: 0;
  font-size: 13px;
}

.article-copyright dl > div {
  display: block;
  margin: 0 0 12px;
  padding: 0 0 12px;
  border-bottom: 0;
}

.article-copyright dl > div:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
}

.article-copyright dt {
  color: var(--copyright-label);
  font-weight: 500;
}

.article-copyright-label {
  color: var(--copyright-label);
}

.article-copyright dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.article-copyright-text {
  color: var(--copyright-text);
}

.article-copyright-note {
  color: var(--copyright-note);
}

.article-copyright a {
  color: var(--copyright-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-tags {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  padding: 18px 0 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.article-related {
  padding-top: 12px;
}

.article-related-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.article-related-heading h2 {
  margin: 0;
  font-size: 22px;
}

.article-related-heading a {
  font-size: 13px;
}

.article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.article-related-grid .article-card {
  display: block;
  min-height: 0;
}

.article-related-grid .card-image {
  width: 100%;
  height: 110px;
}

.article-related-grid .card-body {
  min-height: 108px;
}

.article-pagination {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  max-width: 850px;
  margin: 10px auto 0;
  padding-top: 24px;
  border-top: 1px dotted var(--line);
}

.article-pagination a {
  display: flex;
  max-width: 48%;
  flex-direction: column;
  gap: 5px;
  color: var(--text);
}

.article-pagination a:last-child {
  text-align: right;
}

.article-pagination span {
  color: var(--muted);
  font-size: 12px;
}

.article-pagination strong {
  font-size: 14px;
  font-weight: 500;
}

@media (max-width: 1199.98px) {
  .article-single {
    width: min(850px, calc(100% - 48px));
  }

  .article-toc {
    display: none;
  }
}

@media (max-width: 767.98px) {
  .article-single {
    width: min(100% - 28px, 620px);
    padding-top: 44px;
  }

  .article-header h1 {
    font-size: 38px;
  }

  .article-author-block img {
    width: 64px;
    height: 64px;
    flex-basis: 64px;
  }

  .article-content {
    font-size: 16px;
    line-height: 1.78;
  }

  .article-content h2 {
    font-size: 25px;
  }

  .article-related-grid {
    grid-template-columns: 1fr;
  }

  .article-related-grid .card-image {
    display: none;
  }

  .article-pagination {
    gap: 16px;
  }

  .article-pagination a {
    max-width: 50%;
  }
}

/* Article pages follow the original blog reading composition: a quiet hero
   area, a left-aligned header, a narrow reading column, and a fixed TOC rail. */
@media (min-width: 1200px) {
  .article-single {
    width: min(1024px, calc(100% - 48px));
    max-width: none;
    padding-top: 72px;
  }

  .article-single > .article-header {
    max-width: 674px;
    margin: 0;
    text-align: left;
  }

  .article-single > .article-header h1 {
    max-width: 674px;
    margin: 0 0 14px;
    font-size: 36px;
    line-height: 1.2;
  }

  .article-meta {
    justify-content: flex-start;
  }

  .article-author-block {
    margin-top: 24px;
  }

  .article-author-block img {
    width: 96px;
    height: 96px;
    flex-basis: 96px;
  }

  .article-body-layout {
    display: grid;
    grid-template-columns: minmax(0, 674px) minmax(0, 220px);
    gap: 80px;
    max-width: 1024px;
    margin: 0;
    padding-top: 48px;
  }

  .article-content {
    max-width: none;
    margin-bottom: 54px;
    font-size: 16px;
    line-height: 1.8;
  }

  .article-toc {
    position: static;
    width: auto;
  }

  .article-toc-inner {
    top: 92px;
  }

  .article-pagination {
    max-width: 674px;
    margin-left: 0;
  }
}