/* Semantic article blocks shared by the editor preview and public reading page. */
.article-body,
.studio-preview-body {
  --format-accent: var(--color-primary);
  --format-accent-soft: color-mix(in srgb, var(--format-accent) 10%, var(--bg-surface));
  --format-accent-line: color-mix(in srgb, var(--format-accent) 34%, var(--border-color));
  --format-warm-soft: color-mix(in srgb, #c78735 12%, var(--bg-surface));
  --format-warm-line: color-mix(in srgb, #c78735 42%, var(--border-color));
  --format-danger-soft: color-mix(in srgb, #b45645 11%, var(--bg-surface));
  --format-danger-line: color-mix(in srgb, #b45645 40%, var(--border-color));
  --format-ink: var(--text-primary);
  --format-muted: var(--text-secondary);
}

.article-body.article-style-wechat,
.studio-preview-body.article-style-wechat { font-size: 1.0625rem; line-height: 2; }
.article-body.article-style-wechat > p,
.studio-preview-body.article-style-wechat > p { letter-spacing: 0; }
.article-body.article-style-minimal,
.studio-preview-body.article-style-minimal { font-size: 1rem; line-height: 1.92; }
.article-body.article-style-minimal .article-section-heading,
.studio-preview-body.article-style-minimal .article-section-heading { padding-left: 0; border-left: 0; }
.article-body.article-style-technical,
.studio-preview-body.article-style-technical { font-size: 1rem; line-height: 1.82; }
.article-body.article-style-technical .article-section-heading,
.studio-preview-body.article-style-technical .article-section-heading { font-family: var(--font-sans); }

.article-body .article-section-heading,
.studio-preview-body .article-section-heading {
  position: relative;
  margin: 3.2em 0 1.15em;
  padding: .2em 0 .2em .78em;
  border-left: 4px solid var(--format-accent);
  color: var(--format-ink);
  line-height: 1.35;
}
.article-body .article-section-heading::after,
.studio-preview-body .article-section-heading::after {
  content: '';
  position: absolute;
  left: .78em;
  right: 0;
  bottom: -.45em;
  height: 1px;
  background: linear-gradient(90deg, var(--format-accent-line), transparent 82%);
}
.article-body .article-subsection-heading,
.studio-preview-body .article-subsection-heading {
  display: flex;
  align-items: center;
  gap: .7em;
  margin: 2.4em 0 1em;
  color: var(--format-ink);
}
.article-body .article-subsection-heading::before,
.studio-preview-body .article-subsection-heading::before {
  content: '';
  width: 18px;
  height: 3px;
  flex: 0 0 auto;
  border-radius: 2px;
  background: var(--format-accent);
}

.article-body blockquote.article-lead,
.studio-preview-body blockquote.article-lead,
.article-body blockquote.article-ending,
.studio-preview-body blockquote.article-ending {
  margin: 2em 0 2.4em;
  padding: 1.5em 1.6em;
  border: 1px solid var(--format-accent-line);
  border-left: 4px solid var(--format-accent);
  border-radius: 6px;
  background: var(--format-accent-soft);
  color: var(--format-ink);
  font-style: normal;
  line-height: 1.9;
}
.article-body blockquote.article-ending,
.studio-preview-body blockquote.article-ending { margin-top: 3em; text-align: center; border-left-width: 1px; }
.article-body blockquote.article-quote,
.studio-preview-body blockquote.article-quote {
  position: relative;
  margin: 2.6em auto;
  padding: 1.75em 2.2em;
  border: 0;
  color: var(--format-ink);
  font-family: var(--font-serif);
  font-size: 1.16em;
  font-style: normal;
  line-height: 1.85;
  text-align: center;
}
.article-body blockquote.article-quote::before,
.article-body blockquote.article-quote::after,
.studio-preview-body blockquote.article-quote::before,
.studio-preview-body blockquote.article-quote::after {
  content: '';
  position: absolute;
  left: 18%;
  right: 18%;
  height: 1px;
  background: var(--format-accent-line);
}
.article-body blockquote.article-quote::before,
.studio-preview-body blockquote.article-quote::before { top: 0; }
.article-body blockquote.article-quote::after,
.studio-preview-body blockquote.article-quote::after { bottom: 0; }

.article-body blockquote.article-callout,
.studio-preview-body blockquote.article-callout {
  --co-line: #4b5be0;
  --co-bg: #eaf3fb;
  --co-tint: #f2f7fd;
  --co-ink: #22303d;
  --co-glyph: "i";
  --co-page: var(--bg-base, #fff);
  position: relative;
  margin: 2em 0;
  padding: 1.25em 1.35em 1.25em 3.65em;
  border: 1px solid var(--co-line);
  border-radius: 8px;
  background: var(--co-tint);
  color: var(--co-ink);
  font-style: normal;
  line-height: 1.8;
}
/* 圆环内同时放符号，卡片与竖条两种样式共用 */
.article-body blockquote.article-callout::before,
.studio-preview-body blockquote.article-callout::before {
  content: var(--co-glyph);
  position: absolute;
  left: 1.2em;
  top: 1.25em;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  width: 1.65em;
  height: 1.65em;
  border: 1px solid var(--co-line);
  border-radius: 50%;
  background: var(--co-bg);
  color: var(--co-line);
  font: 700 .78em/1 var(--font-sans);
}
.article-body blockquote.article-callout::after,
.studio-preview-body blockquote.article-callout::after { content: none; }
.article-body blockquote.article-callout > .co-title,
.studio-preview-body blockquote.article-callout > .co-title {
  margin: 0 0 .7em;
  font-weight: 600;
  line-height: 1.5;
}
.article-body blockquote.article-callout > p:last-child,
.studio-preview-body blockquote.article-callout > p:last-child { margin-bottom: 0; }

/* ---- 竖条样式：SVG 弧切角 + 竖条 + 独立圆环（几何见 callout 调参页定稿） ---- */
.article-body blockquote.article-callout.article-callout--bar,
.studio-preview-body blockquote.article-callout.article-callout--bar {
  margin: 40px 0 30px;
  padding: 22px 30px 22px 52px;
  border: 0;
  border-radius: 0 12px 12px 0;
  background: var(--co-bg);
  line-height: 1.72;
}

/* 装饰节点（运行时注入，data-co-deco）：svg 弧 + 竖条 + 圆环图标 */
.article-body blockquote.article-callout .co-art,
.studio-preview-body blockquote.article-callout .co-art {
  position: absolute;
  left: 0;
  top: -2px;
  width: 28.5px;
  height: 34.5px;
  overflow: visible;
  pointer-events: none;
}
.article-body blockquote.article-callout .co-art-bg,
.studio-preview-body blockquote.article-callout .co-art-bg {
  fill: var(--co-page);
}
.article-body blockquote.article-callout .co-art-line,
.studio-preview-body blockquote.article-callout .co-art-line {
  fill: var(--co-line);
}
.article-body blockquote.article-callout .co-bar,
.studio-preview-body blockquote.article-callout .co-bar {
  position: absolute;
  left: 0;
  top: 32px;
  bottom: 0;
  width: 3px;
  background: var(--co-line);
  pointer-events: none;
}
.article-body blockquote.article-callout .co-icon,
.studio-preview-body blockquote.article-callout .co-icon {
  position: absolute;
  left: -12px;
  top: -15px;
  width: 34px;
  height: 34px;
  display: block;
  color: var(--co-line);
  pointer-events: none;
}
.article-body blockquote.article-callout .co-icon svg,
.studio-preview-body blockquote.article-callout .co-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* 无 JS 兜底：圆环用文字符号、竖条用 ::after，弧线缺席 */
.article-body blockquote.article-callout.article-callout--bar:not(.has-deco)::before,
.studio-preview-body blockquote.article-callout.article-callout--bar:not(.has-deco)::before {
  left: -12px;
  top: -15px;
  width: 34px;
  height: 34px;
  border: 2px solid var(--co-line);
  background: transparent;
  font: 600 16px/1 var(--font-sans);
}
.article-body blockquote.article-callout.article-callout--bar:not(.has-deco)::after,
.studio-preview-body blockquote.article-callout.article-callout--bar:not(.has-deco)::after {
  content: "";
  position: absolute;
  left: 0;
  top: 32px;
  bottom: 0;
  width: 3px;
  background: var(--co-line);
  border: 0;
  border-radius: 0;
  pointer-events: none;
}
/* 有真实装饰节点时，伪元素整体让位 */
.article-body blockquote.article-callout.article-callout--bar.has-deco::before,
.article-body blockquote.article-callout.article-callout--bar.has-deco::after,
.studio-preview-body blockquote.article-callout.article-callout--bar.has-deco::before,
.studio-preview-body blockquote.article-callout.article-callout--bar.has-deco::after {
  content: none;
}

.article-body blockquote.article-callout--info,
.studio-preview-body blockquote.article-callout--info {
  --co-line: #4b5be0; --co-bg: #eaf3fb; --co-tint: #f2f7fd; --co-ink: #22303d; --co-glyph: "i";
}
.article-body blockquote.article-callout--warning,
.studio-preview-body blockquote.article-callout--warning {
  --co-line: #e3a33a; --co-bg: #fdf7da; --co-tint: #fffdf4; --co-ink: #2f2b23; --co-glyph: "!";
}
.article-body blockquote.article-callout--success,
.studio-preview-body blockquote.article-callout--success {
  --co-line: #2f8f4e; --co-bg: #e9f5ec; --co-tint: #f5fbf7; --co-ink: #20342a; --co-glyph: "✓";
}
.article-body blockquote.article-callout--question,
.studio-preview-body blockquote.article-callout--question {
  --co-line: #d24b3f; --co-bg: #fdeceb; --co-tint: #fef7f6; --co-ink: #3a2321; --co-glyph: "?";
}

.article-body .article-steps,
.studio-preview-body .article-steps {
  counter-reset: format-step;
  display: grid;
  gap: 1.15em;
  padding-left: 0;
  list-style: none;
}
.article-body .article-steps > li,
.studio-preview-body .article-steps > li {
  counter-increment: format-step;
  position: relative;
  min-height: 2.35em;
  margin: 0;
  padding-left: 3.15em;
}
.article-body .article-steps > li::before,
.studio-preview-body .article-steps > li::before {
  content: counter(format-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -.1em;
  display: grid;
  place-items: center;
  width: 2.2em;
  height: 2.2em;
  border: 1px solid var(--format-accent-line);
  border-radius: 50%;
  color: var(--format-accent);
  background: var(--format-accent-soft);
  font: 700 .75em/1 var(--font-mono);
}
.article-body .article-checklist,
.studio-preview-body .article-checklist { display: grid; gap: .8em; padding-left: 0; list-style: none; }
.article-body .article-checklist > li,
.studio-preview-body .article-checklist > li { position: relative; margin: 0; padding-left: 2em; }
.article-body .article-checklist > li::before,
.studio-preview-body .article-checklist > li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .42em;
  width: .9em;
  height: .9em;
  border: 2px solid var(--format-accent);
  border-radius: 2px;
  background: linear-gradient(135deg, transparent 40%, var(--format-accent) 41% 58%, transparent 59%) center/70% 70% no-repeat;
}

.article-body table.article-comparison,
.studio-preview-body table.article-comparison { border: 0; border-collapse: separate; border-spacing: 0; overflow: hidden; }
.article-body table.article-comparison th,
.studio-preview-body table.article-comparison th { background: var(--format-accent); color: #fff; border-color: color-mix(in srgb, var(--format-accent) 75%, #000); }
.article-body table.article-comparison td:first-child,
.studio-preview-body table.article-comparison td:first-child { color: var(--format-ink); background: var(--format-accent-soft); }
.article-body table.article-data-card,
.studio-preview-body table.article-data-card { border: 1px solid var(--format-accent-line); background: var(--format-accent-soft); }
.article-body table.article-data-card td,
.studio-preview-body table.article-data-card td { padding: 1.35em; border: 0; }
.article-body table.article-data-card td:last-child strong,
.studio-preview-body table.article-data-card td:last-child strong { color: var(--format-accent); font-size: 1.9em; line-height: 1.2; }

.article-body .article-divider,
.studio-preview-body .article-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3.5em;
  margin: 2em 0;
  color: var(--format-accent);
}
.article-body .article-divider::before,
.studio-preview-body .article-divider::before { content: '·  ·  ·'; letter-spacing: .5em; }
.article-body .article-media-grid,
.studio-preview-body .article-media-grid,
#rich-editor .article-media-grid {
  --media-gap: 16px;
  display: grid;
  grid-template-columns: repeat(var(--media-columns, 2), minmax(0, 1fr));
  gap: var(--media-gap);
  width: 100%;
  margin: 2.25em 0;
  padding: 0;
}
.article-body .article-media-grid[data-layout="1"],
.studio-preview-body .article-media-grid[data-layout="1"],
#rich-editor .article-media-grid[data-layout="1"] { --media-columns: 1; }
.article-body .article-media-grid[data-layout="2"],
.studio-preview-body .article-media-grid[data-layout="2"],
#rich-editor .article-media-grid[data-layout="2"] { --media-columns: 2; }
.article-body .article-media-grid[data-layout="3"],
.studio-preview-body .article-media-grid[data-layout="3"],
#rich-editor .article-media-grid[data-layout="3"] { --media-columns: 3; }
.article-body .article-media-grid[data-gap="compact"],
.studio-preview-body .article-media-grid[data-gap="compact"],
#rich-editor .article-media-grid[data-gap="compact"] { --media-gap: 6px; }
.article-body .article-media-grid[data-gap="wide"],
.studio-preview-body .article-media-grid[data-gap="wide"],
#rich-editor .article-media-grid[data-gap="wide"] { --media-gap: 28px; }
.article-body .article-media-grid > img,
.studio-preview-body .article-media-grid > img,
#rich-editor .article-media-grid > img {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
  min-width: 0;
  margin: 0;
  border-radius: 10px;
}
.article-body .article-media-grid[data-fit="cover"] > img,
.studio-preview-body .article-media-grid[data-fit="cover"] > img,
#rich-editor .article-media-grid[data-fit="cover"] > img {
  height: clamp(180px, 28vw, 360px);
  object-fit: cover;
}
#rich-editor .article-media-grid { position: relative; padding: 10px; border: 1px dashed var(--border-strong); border-radius: 13px; cursor: pointer; }
#rich-editor .article-media-grid::before { content: attr(data-layout) ' 列图片组'; position: absolute; top: -11px; left: 12px; z-index: 2; padding: 2px 7px; border: 1px solid var(--border-color); border-radius: 999px; color: var(--color-primary); background: var(--bg-surface); font: 700 9px/1.4 var(--font-mono); }
#rich-editor .article-media-grid.is-selected { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary); }

.article-body .article-image-caption,
.studio-preview-body .article-image-caption {
  margin: -1.2em auto 2em;
  color: var(--text-tertiary);
  font-size: .82em;
  line-height: 1.65;
  text-align: center;
}

@media (max-width: 640px) {
  .article-body blockquote.article-lead,
  .studio-preview-body blockquote.article-lead,
  .article-body blockquote.article-ending,
  .studio-preview-body blockquote.article-ending { padding: 1.2em; }
  .article-body blockquote.article-quote,
  .studio-preview-body blockquote.article-quote { padding: 1.5em .9em; font-size: 1.08em; }
  .article-body blockquote.article-callout,
  .studio-preview-body blockquote.article-callout { padding: 1.15em 1.1em 1.15em 3.35em; }
  .article-body table.article-data-card td,
  .studio-preview-body table.article-data-card td { min-width: 140px; }
  .article-body .article-media-grid[data-mobile="stack"],
  .studio-preview-body .article-media-grid[data-mobile="stack"],
  #rich-editor .article-media-grid[data-mobile="stack"] { --media-columns: 1; }
  .article-body .article-media-grid[data-mobile="columns"],
  .studio-preview-body .article-media-grid[data-mobile="columns"],
  #rich-editor .article-media-grid[data-mobile="columns"] { --media-gap: 6px; }
  .article-body .article-media-grid[data-fit="cover"] > img,
  .studio-preview-body .article-media-grid[data-fit="cover"] > img,
  #rich-editor .article-media-grid[data-fit="cover"] > img { height: clamp(130px, 38vw, 230px); }
}

@media (prefers-reduced-motion: reduce) {
  .article-body *, .studio-preview-body * { scroll-behavior: auto !important; }
}