/* 正文页样式：文章、项目详情、生活记录详情共用。
   正文 HTML 由服务端清洗后输出，这里的规则只负责排版，不依赖任何内联样式。 */

.article-shell {
  padding-bottom: 60px;
}

.article-back {
  display: inline-block;
  margin: 26px 0 30px;
}

.article-head h1 {
  font-size: clamp(27px, 4vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
}

.article-summary {
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0 0 18px;
  max-width: 72ch;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.article-cover {
  margin: 30px 0 0;
}

.article-cover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.article-cover figcaption {
  margin-top: 9px;
  font-size: 12px;
  color: var(--muted);
}

/* --- 目录 + 正文双栏 -------------------------------------------------------- */

.article-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  margin-top: 40px;
}

.article-toc {
  position: sticky;
  top: 24px;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.article-toc .toc {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  font-size: 13px;
  line-height: 1.6;
}

.article-toc .toc ul {
  list-style: none;
  margin: 4px 0 4px 0;
  padding-left: 13px;
}

.article-toc .toc li {
  margin: 6px 0;
}

.article-toc .toc a {
  color: var(--muted);
  text-decoration: none;
  display: block;
  padding: 2px 0;
}

.article-toc .toc a:hover,
.article-toc .toc a.is-current {
  color: var(--ink);
}

.article-toc .toc a.is-current {
  font-weight: 500;
  border-left: 2px solid var(--acid);
  margin-left: -16px;
  padding-left: 14px;
}

/* --- 正文排版 -------------------------------------------------------------- */

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

.article-body {
  font-size: 16.5px;
  line-height: 1.85;
  max-width: 74ch;
  min-width: 0;
}

.article-body h2,
.article-body h3,
.article-body h4 {
  line-height: 1.3;
  letter-spacing: -0.01em;
  scroll-margin-top: 20px;
}

.article-body h2 {
  font-size: 26px;
  margin: 52px 0 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.article-body h3 {
  font-size: 20px;
  margin: 38px 0 13px;
}

.article-body h4 {
  font-size: 17px;
  margin: 28px 0 10px;
}

.article-body p {
  margin: 0 0 18px;
}

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

.article-body ul,
.article-body ol {
  margin: 0 0 18px;
  padding-left: 24px;
}

.article-body li {
  margin: 7px 0;
}

.article-body blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--acid);
  color: var(--muted);
}

.article-body hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 40px 0;
}

.article-body img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin: 26px 0;
}

.article-body code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(10, 20, 23, 0.06);
  border-radius: 4px;
  padding: 2px 5px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14.5px;
}

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

.article-body th {
  background: rgba(10, 20, 23, 0.04);
  font-weight: 600;
}

.article-body kbd {
  font-family: var(--mono);
  font-size: 0.82em;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 5px;
}

/* 标题锚点：Markdown 生成了 id，这里让标题可点（点击复制这一节的链接） */
.article-body h2.anchored,
.article-body h3.anchored,
.article-body h4.anchored {
  cursor: pointer;
}

.article-body h2.anchored:hover,
.article-body h3.anchored:hover,
.article-body h4.anchored:hover {
  color: var(--teal);
}

.article-body h2.link-copied,
.article-body h3.link-copied,
.article-body h4.link-copied {
  color: var(--teal);
}

/* `¶` 永久链接由 Markdown 的 permalink 生成，默认颜色太重，弱化一点 */
.article-body .headerlink {
  font-size: 0.62em;
  color: var(--muted);
  opacity: 0;
  margin-left: 8px;
  text-decoration: none;
  transition: opacity 0.15s;
}

.article-body h2:hover .headerlink,
.article-body h3:hover .headerlink,
.article-body h4:hover .headerlink,
.article-body .headerlink:focus {
  opacity: 1;
}

/* --- 代码块与复制按钮 ------------------------------------------------------ */

.article-body pre {
  position: relative;
  margin: 24px 0;
  padding: 18px 18px 16px;
  background: var(--ink);
  color: #e8efe9;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
}

.article-body pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

.copy-code {
  position: absolute;
  top: 9px;
  right: 9px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #cfd8d2;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  padding: 4px 9px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.18s, background 0.18s;
}

.article-body pre:hover .copy-code,
.copy-code:focus {
  opacity: 1;
}

/* 触屏没有 hover，按钮必须一直可见，否则复制不了 */
@media (hover: none) {
  .copy-code {
    opacity: 1;
  }
}

.copy-code:hover {
  background: rgba(255, 255, 255, 0.2);
}

.copy-code.is-done {
  color: var(--ink);
  background: var(--acid);
  border-color: var(--acid);
  opacity: 1;
}

/* --- 提示块（admonition） -------------------------------------------------- */

.article-body .admonition {
  margin: 26px 0;
  padding: 15px 18px;
  border-left: 3px solid var(--teal);
  border-radius: 0 6px 6px 0;
  background: rgba(29, 107, 105, 0.06);
  font-size: 15px;
}

.article-body .admonition > .admonition-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.article-body .admonition > *:last-child {
  margin-bottom: 0;
}

.article-body .admonition.tip,
.article-body .admonition.hint {
  border-left-color: var(--acid);
  background: rgba(216, 244, 92, 0.16);
}

.article-body .admonition.warning,
.article-body .admonition.caution,
.article-body .admonition.danger {
  border-left-color: var(--orange);
  background: rgba(242, 123, 81, 0.1);
}

.article-body .admonition.note,
.article-body .admonition.info {
  border-left-color: var(--teal);
}

/* --- 页脚相关 -------------------------------------------------------------- */

.article-source,
.article-foot {
  margin: 34px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.article-related {
  margin-top: 54px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

/* --- 窄屏 ------------------------------------------------------------------ */

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .article-toc {
    position: static;
    max-height: none;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 14px 0 0;
  }

  .article-toc .toc a.is-current {
    margin-left: 0;
    padding-left: 10px;
  }
}

@media (max-width: 640px) {
  .article-body {
    font-size: 16px;
  }

  .article-body h2 {
    font-size: 22px;
    margin-top: 40px;
  }
}