/* ================================================================
   CLI Article Template — Global Stylesheet
   Version: 1.0
   
   USAGE:
   Enqueue this file on all posts that use the CLI article template.
   The template wrapper (cli-article-wrapper.php) provides the
   structural HTML; individual post content goes inside
   <article class="article-body">.
   ================================================================ */

/* FONT IMPORT — must be first in stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400;1,9..144,500&family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,500&family=Noto+Serif+SC:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   SCOPED RESET — prevents Oxygen from bleeding in
   ============================================================ */
.hsk-article-wrapper {
  all: initial;
  display: block;
  padding-top: 0;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.005em;
  color: #1a1a1a;
  background: transparent;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  width: 100%;
  overflow-x: hidden;
  overflow-x: clip;
}

.hsk-article-wrapper *,
.hsk-article-wrapper *::before,
.hsk-article-wrapper *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: inherit;
}

.hsk-article-wrapper img { max-width: 100%; height: auto; display: block; }
.hsk-article-wrapper a { color: #2a5c8c; text-decoration: none; font-family: inherit; }
.hsk-article-wrapper a:hover { color: #3a7ab8; }


/* ============================================================
   CSS VARIABLES (scoped)
   ============================================================ */
.hsk-article-wrapper {
  --ink: #1a1a1a;
  --ink-soft: #3d3d3d;
  --ink-muted: #6b6b6b;
  --ink-faint: #999999;
  --surface: #faf9f7;
  --surface-warm: #f5f2ed;
  --surface-card: #ffffff;
  --border: #e8e4de;
  --border-light: #f0ede8;

  --accent: #c23c2a;
  --accent-soft: #d4564a;
  --accent-bg: #fdf0ee;
  --accent-border: #f0c4be;

  --blue: #2a5c8c;
  --blue-soft: #3a7ab8;
  --blue-bg: #eef4fa;
  --blue-border: #b8d4ed;

  --green: #3a7a5c;
  --green-bg: #eef7f2;
  --green-border: #b8dcc8;

  --gold: #b8860b;
  --gold-bg: #fdf8ed;
  --gold-border: #e8d5a0;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.175rem;
  --text-lg: 1.1875rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.625rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.25rem;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --content-width: 680px;
  --wide-width: 900px;
  --full-width: 1200px;
  --toc-width: 240px;

  --line-height-body: 1.75;
  --line-height-heading: 1.2;
  --paragraph-spacing: 1.5em;
}

/* ============================================================
   READING PROGRESS BAR
   ============================================================ */
.hsk-article-wrapper .progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
  z-index: 10000;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ============================================================
   ARTICLE HERO
   ============================================================ */
.hsk-article-wrapper .article-hero {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: calc(var(--space-xl) + 1rem) 2rem var(--space-2xl);
}

.hsk-article-wrapper .article-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  margin-bottom: var(--space-xl);
  list-style: none;
}

.hsk-article-wrapper .breadcrumb a { color: var(--ink-muted); font-family: inherit !important; }
.hsk-article-wrapper .breadcrumb a:hover { color: var(--accent); }
.hsk-article-wrapper .breadcrumb .sep { color: var(--ink-faint); }

.hsk-article-wrapper .article-hero .category-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  margin-bottom: var(--space-lg);
  line-height: 1.4;
}

.hsk-article-wrapper .article-hero h1 {
  font-family: 'Fraunces', Georgia, 'Times New Roman', serif !important;
  font-size: clamp(2rem, 5vw, var(--text-5xl));
  font-weight: 600;
  line-height: 1.12;
  color: var(--ink);
  margin-bottom: var(--space-lg);
  max-width: 800px;
  letter-spacing: -0.02em;
  padding: 0;
  border: none;
  text-transform: none;
}

.hsk-article-wrapper .article-hero .subtitle {
  font-size: var(--text-xl);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 700px;
  margin-bottom: var(--space-xl);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
}

.hsk-article-wrapper .article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  list-style: none;
}

.hsk-article-wrapper .meta-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hsk-article-wrapper .meta-author .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.hsk-article-wrapper .meta-author .avatar-fallback {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-bg), var(--blue-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', Georgia, serif !important;
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--accent);
  line-height: 1;
}

.hsk-article-wrapper .meta-author .author-info .name {
  font-weight: 600;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink);
  line-height: 1.3;
}

.hsk-article-wrapper .meta-author .author-info .role {
  font-size: var(--text-xs);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  line-height: 1.3;
}

.hsk-article-wrapper .meta-detail {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  line-height: 1.4;
}

.hsk-article-wrapper .meta-detail svg {
  width: 16px;
  height: 16px;
  stroke: var(--ink-faint);
  fill: none;
  flex-shrink: 0;
}

.hsk-article-wrapper .meta-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
}

/* ============================================================
   HERO IMAGE
   ============================================================ */
.hsk-article-wrapper .hero-image-wrap {
  max-width: var(--full-width);
  margin: 0 auto var(--space-3xl);
  padding: 0 2rem;
}

.hsk-article-wrapper .hero-image {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  margin: 0;
  border: none;
}

.hsk-article-wrapper .hero-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: none;
  border-radius: 0;
}

.hsk-article-wrapper .hero-image figcaption {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  margin-top: 0.75rem;
  padding-left: 0.5rem;
  border-left: 2px solid var(--border);
  line-height: 1.5;
  font-style: normal;
  text-align: left;
}

/* ============================================================
   MAIN CONTENT LAYOUT
   ============================================================ */
.hsk-article-wrapper .article-layout {
  max-width: var(--full-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr var(--content-width) var(--toc-width);
  gap: var(--space-3xl);
}

.hsk-article-wrapper .article-gutter {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding-top: 0.5rem;
}

.hsk-article-wrapper .share-tools {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hsk-article-wrapper .share-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--ink-muted);
  padding: 0;
  font-size: inherit;
  line-height: 1;
  outline: none;
}

.hsk-article-wrapper .share-btn[href] {
  text-decoration: none !important;
}

.hsk-article-wrapper .copy-tooltip {
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--ink);
  color: white;
  font-size: 11px;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 5px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  line-height: 1.4;
}

.hsk-article-wrapper .copy-tooltip.show {
  opacity: 1;
}

.hsk-article-wrapper .share-btn:hover {
  border-color: var(--accent-border);
  color: var(--accent);
  background: var(--accent-bg);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(194, 60, 42, 0.1);
}

.hsk-article-wrapper #hskCopyLinkBtn:hover {
  border-color: var(--green-border);
  color: var(--green);
  background: var(--green-bg);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(58, 122, 92, 0.1);
}

.hsk-article-wrapper .share-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

/* ============================================================
   ARTICLE BODY
   ============================================================ */
.hsk-article-wrapper .article-body {
  max-width: var(--content-width);
  min-width: 0;
}

/* --- Key Takeaways Box --- */
.hsk-article-wrapper .key-takeaways {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  margin-bottom: var(--space-3xl);
  position: relative;
}

.hsk-article-wrapper .key-takeaways::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-bg) 0%, transparent 60%);
  border-radius: 0 10px 10px 0;
  z-index: 0;
  opacity: 0.5;
  pointer-events: none;
}

.hsk-article-wrapper .key-takeaways > * { position: relative; z-index: 1; }

.hsk-article-wrapper .key-takeaways .kt-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.hsk-article-wrapper .key-takeaways .kt-header svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  flex-shrink: 0;
}

.hsk-article-wrapper .key-takeaways ul {
  list-style: none !important;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding: 0 !important;
  margin: 0 !important;
}

.hsk-article-wrapper .key-takeaways li {
  position: relative;
  padding-left: 1.5rem !important;
  font-size: var(--text-base);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 !important;
  border: none !important;
  list-style: none !important;
}

.hsk-article-wrapper .key-takeaways li::before {
  content: '' !important;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  position: absolute;
  left: 0.25rem;
  top: 0.55em;
}

.hsk-article-wrapper .key-takeaways li::marker {
  content: none !important;
  display: none !important;
}

/* --- Prose --- */
.hsk-article-wrapper .article-body p {
  margin-bottom: var(--paragraph-spacing);
  color: var(--ink-soft);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: var(--text-base);
  line-height: var(--line-height-body);
}

.hsk-article-wrapper .article-body .lead-paragraph::first-letter {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: 3.5em;
  float: left;
  line-height: 0.8;
  margin-right: 0.08em;
  margin-top: 0.06em;
  color: var(--accent);
  font-weight: 600;
}

/* --- Headings --- */
.hsk-article-wrapper .article-body h2 {
  font-family: 'Fraunces', Georgia, 'Times New Roman', serif !important;
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: var(--line-height-heading);
  color: var(--ink);
  margin-top: var(--space-4xl);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.015em;
  scroll-margin-top: 90px;
  padding: 0;
  border: none;
  text-transform: none;
}

.hsk-article-wrapper .article-body h2 .sn {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  margin-right: 0.625rem;
  vertical-align: middle;
  font-family: 'JetBrains Mono', 'Courier New', monospace !important;
  letter-spacing: 0;
  position: relative;
  top: -2px;
  line-height: 1.4;
}

.hsk-article-wrapper .article-body h3 {
  font-family: 'Fraunces', Georgia, 'Times New Roman', serif !important;
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: var(--line-height-heading);
  color: var(--ink);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  scroll-margin-top: 90px;
  padding: 0;
  border: none;
  text-transform: none;
}

/* --- Inline styles --- */
.hsk-article-wrapper .article-body strong { font-weight: 600; color: var(--ink); }
.hsk-article-wrapper .article-body em { font-style: italic; }

.hsk-article-wrapper .article-body a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-color: var(--blue-border);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
  font-family: inherit !important;
}

.hsk-article-wrapper .article-body a:hover { text-decoration-color: var(--blue); }

.hsk-article-wrapper .zh {
  font-family: 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif !important;
  font-weight: 500;
  color: var(--ink);
  word-break: keep-all;
}

.hsk-article-wrapper .pinyin {
  font-style: italic;
  color: var(--ink-muted);
  font-size: 0.95em;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
}

/* --- Callout Boxes --- */
.hsk-article-wrapper .callout {
  border-radius: 10px;
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
  border: 1px solid;
}

.hsk-article-wrapper .callout .callout-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
  line-height: 1.4;
}

.hsk-article-wrapper .callout .callout-header svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  flex-shrink: 0;
}

.hsk-article-wrapper .callout p {
  margin-bottom: 0.75em;
  font-size: var(--text-base);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  line-height: 1.65;
}
.hsk-article-wrapper .callout p:last-child { margin-bottom: 0; }

.hsk-article-wrapper .callout-tip { background: var(--green-bg); border-color: var(--green-border); }
.hsk-article-wrapper .callout-tip .callout-header { color: var(--green); }

.hsk-article-wrapper .callout-info { background: var(--blue-bg); border-color: var(--blue-border); }
.hsk-article-wrapper .callout-info .callout-header { color: var(--blue); }

.hsk-article-wrapper .callout-warning { background: var(--gold-bg); border-color: var(--gold-border); }
.hsk-article-wrapper .callout-warning .callout-header { color: var(--gold); }

.hsk-article-wrapper .callout-important { background: var(--accent-bg); border-color: var(--accent-border); }
.hsk-article-wrapper .callout-important .callout-header { color: var(--accent); }

/* --- Tables --- */
.hsk-article-wrapper .article-table-wrap {
  margin: var(--space-xl) 0;
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-card);
}

.hsk-article-wrapper .vocab-table .article-table th,
.hsk-article-wrapper .vocab-table .article-table td {
  text-align: left;
}

.hsk-article-wrapper .vocab-table .td-center,
.hsk-article-wrapper .vocab-table .th-center {
  text-align: left;
}

/* ==========================================================
   HOVER POPUP (enhanced with meaning + hint)
   ========================================================== */
.hsk-article-wrapper .zh-popup {
  position: fixed;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06), 0 20px 48px rgba(0,0,0,0.13);
  padding: 1.1rem 1.6rem 0.9rem;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  text-align: center;
  display: none;
  max-width: 320px;
  font-family: 'Noto Serif SC', 'PingFang SC', serif !important;
  font-size: 3rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
}

.hsk-article-wrapper .zh-popup.visible {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.hsk-article-wrapper .zh-popup .popup-pinyin {
  display: block;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.92rem;
  font-weight: 400;
  font-style: italic;
  color: var(--ink-muted);
  margin-top: 0.3rem;
}

.hsk-article-wrapper .zh-popup .popup-meaning {
  display: block;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-top: 0.1rem;
}

.hsk-article-wrapper .zh-popup .popup-hint {
  display: block;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.68rem;
  color: #bbb;
  margin-top: 0.5rem;
  letter-spacing: 0.02em;
}

/* ==========================================================
   STROKE ORDER INTERACTIVE — zh-interactive class
   ========================================================== */
.hsk-article-wrapper .zh-interactive {
  cursor: pointer;
  transition: color 0.15s ease;
  position: relative;
}

.hsk-article-wrapper .zh-interactive:hover {
  color: var(--accent);
}

.hsk-article-wrapper .zh-interactive::after {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: 4px;
  vertical-align: middle;
  opacity: 0;
  transition: opacity 0.15s ease;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c23c2a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 19l7-7 3 3-7 7-3-3z'/%3E%3Cpath d='M18 13l-1.5-7.5L2 2l3.5 14.5L13 18l5-5z'/%3E%3Cpath d='M2 2l7.586 7.586'/%3E%3C/svg%3E");
  background-size: contain;
}

.hsk-article-wrapper .zh-interactive:hover::after {
  opacity: 0.7;
}

/* Hide pen icon on any zh-interactive followed by another zh-interactive */
.hsk-article-wrapper .zh-interactive + .zh-interactive {
  margin-left: 0;
}
.hsk-article-wrapper .zh-interactive:has(+ .zh-interactive)::after {
  display: none;
}

/* ==========================================================
   STROKE ORDER PANEL
   ========================================================== */
.hsk-article-wrapper .stroke-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.hsk-article-wrapper .stroke-overlay.open {
  opacity: 1;
  visibility: visible;
}

.hsk-article-wrapper .stroke-panel {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: 380px;
  max-width: 92vw;
  background: var(--surface);
  z-index: 10001;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -8px 0 40px rgba(0,0,0,0.12);
}

.hsk-article-wrapper .stroke-panel.open {
  transform: translateX(0);
}

.hsk-article-wrapper .stroke-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-card);
}

.hsk-article-wrapper .stroke-panel-header h3 {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  border: none;
  text-transform: none;
}

.hsk-article-wrapper .stroke-panel-close {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--ink-muted);
  transition: all 0.15s ease;
  padding: 0;
  line-height: 1;
  outline: none;
}

.hsk-article-wrapper .stroke-panel-close:hover {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.hsk-article-wrapper .stroke-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  -webkit-overflow-scrolling: touch;
}

.hsk-article-wrapper .stroke-char-display {
  text-align: center;
  margin-bottom: 1.5rem;
}

.hsk-article-wrapper .stroke-char-display .display-char {
  font-family: 'Noto Serif SC', 'PingFang SC', serif !important;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--ink);
}

.hsk-article-wrapper .stroke-char-display .display-pinyin {
  font-size: 1rem;
  font-style: italic;
  color: var(--ink-muted);
  margin-top: 0.15rem;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
}

.hsk-article-wrapper .stroke-char-display .display-meaning {
  font-size: 0.88rem;
  color: var(--ink-faint);
  margin-top: 0.1rem;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
}

.hsk-article-wrapper .stroke-animation-box,
.hsk-article-wrapper .stroke-quiz-box,
.hsk-article-wrapper .stroke-fan-box {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.hsk-article-wrapper .stroke-animation-box .animation-label,
.hsk-article-wrapper .stroke-quiz-box .quiz-label,
.hsk-article-wrapper .stroke-fan-box .fan-label {
  font-family: 'JetBrains Mono', 'Courier New', monospace !important;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 0.75rem;
}

.hsk-article-wrapper #hskStrokeAnimTarget {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 4px;
  min-height: 120px;
}

.hsk-article-wrapper #hskStrokeQuizTarget {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
}

.hsk-article-wrapper #hskStrokeAnimTarget svg,
.hsk-article-wrapper #hskStrokeQuizTarget svg {
  border: 1px solid var(--border-light);
  border-radius: 10px;
  background:
    linear-gradient(var(--border-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-light) 1px, transparent 1px),
    linear-gradient(45deg, var(--border-light) 1px, transparent 1px),
    linear-gradient(-45deg, var(--border-light) 1px, transparent 1px);
  background-size: 50% 50%, 50% 50%, 100% 100%, 100% 100%;
  background-position: center;
}

.hsk-article-wrapper #hskStrokeQuizTarget svg {
  cursor: crosshair;
}

.hsk-article-wrapper .stroke-controls {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.hsk-article-wrapper .stroke-controls button {
  flex: 1;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.55em 1em;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-card);
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.15s ease;
  outline: none;
  line-height: 1.4;
}

.hsk-article-wrapper .stroke-controls button:hover {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.hsk-article-wrapper .stroke-controls button.primary-btn {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.hsk-article-wrapper .stroke-controls button.primary-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
}

.hsk-article-wrapper .stroke-controls button.active-stop {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.hsk-article-wrapper .quiz-feedback {
  text-align: center;
  font-size: 0.85rem;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  margin-top: 0.75rem;
  min-height: 1.5em;
}

.hsk-article-wrapper .quiz-feedback.correct { color: var(--green); font-weight: 600; }
.hsk-article-wrapper .quiz-feedback.mistake { color: var(--accent); }
.hsk-article-wrapper .quiz-feedback.complete { color: var(--accent); font-weight: 600; }

.hsk-article-wrapper #hskStrokeFanTarget {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.hsk-article-wrapper #hskStrokeFanTarget svg {
  border: 1px solid var(--border-light);
  border-radius: 6px;
}

@media (max-width: 768px) {
  .hsk-article-wrapper .stroke-panel {
    width: 100vw;
    max-width: 100vw;
  }
}

.hsk-article-wrapper .article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  border: none;
}

.hsk-article-wrapper .article-table thead {
  background: var(--surface-warm);
  border-bottom: 2px solid var(--border);
}

.hsk-article-wrapper .article-table th {
  font-weight: 600;
  text-align: left;
  padding: 0.875rem 1rem;
  color: var(--ink);
  font-size: var(--text-xs);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  border: none;
  background: transparent;
  line-height: 1.4;
}

.hsk-article-wrapper .article-table td {
  padding: 0.875rem 1rem;
  color: var(--ink-soft);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  border-bottom: 1px solid var(--border-light);
  line-height: 1.5;
  border-left: none;
  border-right: none;
  border-top: none;
  background: transparent;
  font-size: 1rem;
}

.hsk-article-wrapper .article-table tbody tr:last-child td { border-bottom: none; }
.hsk-article-wrapper .article-table tbody tr:hover { background: var(--surface-warm); }

.hsk-article-wrapper .article-table .th-center,
.hsk-article-wrapper .article-table .td-center { text-align: center; }

.hsk-article-wrapper .level-badge {
  display: inline-block;
  font-family: 'JetBrains Mono', 'Courier New', monospace !important;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
  line-height: 1.4;
}

.hsk-article-wrapper .badge-hsk1 { background: #e8f5e9; color: #2e7d32; }
.hsk-article-wrapper .badge-hsk2 { background: #e3f2fd; color: #1565c0; }
.hsk-article-wrapper .badge-hsk3 { background: #fff3e0; color: #e65100; }
.hsk-article-wrapper .badge-hsk4 { background: #fce4ec; color: #c62828; }
.hsk-article-wrapper .badge-hsk5 { background: #f3e5f5; color: #6a1b9a; }
.hsk-article-wrapper .badge-hsk6 { background: #efebe9; color: #4e342e; }
.hsk-article-wrapper .badge-hsk79 { background: #263238; color: #eceff1; }

/* --- Lists --- */
.hsk-article-wrapper .article-body > ul,
.hsk-article-wrapper .article-body > ol {
  margin: var(--space-md) 0 var(--paragraph-spacing);
  padding-left: 1.5rem;
}

.hsk-article-wrapper .article-body > ul { list-style: disc; }
.hsk-article-wrapper .article-body > ol { list-style: decimal; }

.hsk-article-wrapper .article-body > ul > li,
.hsk-article-wrapper .article-body > ol > li {
  margin-bottom: 0.5em;
  color: var(--ink-soft);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  line-height: 1.7;
  font-size: var(--text-base);
  padding: 0;
}

.hsk-article-wrapper .article-body > ul > li::marker,
.hsk-article-wrapper .article-body > ol > li::marker {
  color: var(--accent);
  font-weight: 600;
}

/* --- Figures --- */
.hsk-article-wrapper .article-figure {
  margin: var(--space-2xl) calc(-1 * var(--space-xl));
  border: none;
  padding: 0;
}

.hsk-article-wrapper .article-figure img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border-light);
}

.hsk-article-wrapper .article-figure figcaption {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  margin-top: 0.625rem;
  padding-left: 0.5rem;
  border-left: 2px solid var(--border);
  line-height: 1.5;
  font-style: normal;
  text-align: left;
}

/* --- Section Divider --- */
.hsk-article-wrapper .section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: var(--space-3xl) 0;
  color: var(--ink-faint);
}

.hsk-article-wrapper .section-divider::before,
.hsk-article-wrapper .section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.hsk-article-wrapper .section-divider .dc {
  font-family: 'Noto Serif SC', 'PingFang SC', serif !important;
  font-size: 1.25rem;
  opacity: 0.4;
  line-height: 1;
}

/* --- Mid-Article CTA --- */
.hsk-article-wrapper .mid-cta {
  background: linear-gradient(135deg, var(--accent-bg) 0%, var(--blue-bg) 100%);
  border: 1px solid var(--accent-border);
  border-radius: 12px;
  margin: var(--space-3xl) 0;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
}

.hsk-article-wrapper .mid-cta .mid-cta-image {
  position: relative;
  min-height: 260px;
  overflow: hidden;
}

.hsk-article-wrapper .mid-cta .mid-cta-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  border: none;
}

.hsk-article-wrapper .mid-cta .mid-cta-content {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hsk-article-wrapper .mid-cta h3 {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.5rem;
  margin-top: 0;
  padding: 0;
  border: none;
  text-transform: none;
}

.hsk-article-wrapper .mid-cta p {
  color: var(--ink-soft);
  font-size: var(--text-base);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  margin-bottom: var(--space-lg);
}

.hsk-article-wrapper .mid-cta .cta-row {
  display: flex;
  align-items: stretch;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hsk-article-wrapper .mid-cta .cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: white !important;
  background: var(--accent);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  text-decoration: none !important;
  transition: all 0.2s;
  line-height: 1.4;
  border: none;
}

.hsk-article-wrapper .mid-cta .cta-btn:hover {
  background: var(--accent-soft);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(194, 60, 42, 0.25);
  color: white !important;
  text-decoration: none !important;
}

.hsk-article-wrapper .mid-cta .cta-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.hsk-article-wrapper .mid-cta .cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--accent) !important;
  background: var(--surface-card);
  border: 1px solid var(--accent-border);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  text-decoration: none !important;
  transition: all 0.2s;
  line-height: 1.4;
}

.hsk-article-wrapper .mid-cta .cta-secondary:hover {
  background: var(--accent-bg);
  color: var(--accent) !important;
  text-decoration: none !important;
}

@media (max-width: 768px) {
  .hsk-article-wrapper .mid-cta {
    grid-template-columns: 1fr;
  }
  .hsk-article-wrapper .mid-cta .mid-cta-image {
    min-height: 200px;
  }
  .hsk-article-wrapper .mid-cta .mid-cta-content {
    text-align: center;
  }
  .hsk-article-wrapper .mid-cta .cta-row {
    flex-direction: column;
    align-items: stretch;
  }
}

/* --- Pull Quote --- */
.hsk-article-wrapper .pull-quote {
  margin: var(--space-2xl) calc(-1 * var(--space-xl));
  padding: var(--space-xl) var(--space-2xl);
  border-left: 3px solid var(--accent);
  position: relative;
  border-right: none;
  border-top: none;
  border-bottom: none;
  background: transparent;
}

.hsk-article-wrapper .pull-quote::before {
  content: '\201C';
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.15;
  position: absolute;
  top: -0.2em;
  left: 0.25em;
  line-height: 1;
}

.hsk-article-wrapper .pull-quote blockquote {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-xl);
  font-weight: 400;
  font-style: italic;
  line-height: 1.55;
  color: var(--ink);
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
}

.hsk-article-wrapper .pull-quote cite {
  display: block;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--ink-muted);
  margin-top: 0.75rem;
}

/* --- Related Guides Box --- */
.hsk-article-wrapper .related-guides {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: var(--space-xl);
  margin: var(--space-2xl) 0;
}

.hsk-article-wrapper .related-guides .rg-header {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-light);
  border-top: none;
  border-left: none;
  border-right: none;
}

.hsk-article-wrapper .related-guides ul {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hsk-article-wrapper .related-guides li {
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  list-style: none !important;
}

.hsk-article-wrapper .related-guides li::before { content: none !important; display: none !important; }
.hsk-article-wrapper .related-guides li::marker { content: none !important; display: none !important; }

.hsk-article-wrapper .related-guides li a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--blue);
  text-decoration: none;
  transition: color 0.2s;
}

.hsk-article-wrapper .related-guides li a::before {
  content: '\2192';
  color: var(--accent);
  font-weight: 600;
}

.hsk-article-wrapper .related-guides li a:hover { color: var(--accent); text-decoration: none; }

.hsk-article-wrapper .related-guides li .guide-desc {
  font-size: var(--text-xs);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-faint);
  margin-left: 1.25rem;
  line-height: 1.4;
}

/* --- Sources --- */
.hsk-article-wrapper .sources-section {
  margin: var(--space-2xl) 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
}

.hsk-article-wrapper .sources-section h2 {
  font-size: var(--text-lg) !important;
  margin-top: 0 !important;
  margin-bottom: var(--space-md) !important;
}

.hsk-article-wrapper .sources-section ul {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.hsk-article-wrapper .sources-section li {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border-light);
  line-height: 1.5;
  border-right: none;
  border-top: none;
  border-bottom: none;
  list-style: none !important;
}

.hsk-article-wrapper .sources-section li::before { content: none !important; display: none !important; }
.hsk-article-wrapper .sources-section li::marker { content: none !important; display: none !important; }

.hsk-article-wrapper .sources-section li a {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
}

/* ============================================================
   TABLE OF CONTENTS SIDEBAR
   ============================================================ */
.hsk-article-wrapper .toc-sidebar { position: relative; }

.hsk-article-wrapper .toc-container {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 0.5rem;
}

.hsk-article-wrapper .toc-container::-webkit-scrollbar { width: 3px; }
.hsk-article-wrapper .toc-container::-webkit-scrollbar-track { background: transparent; }
.hsk-article-wrapper .toc-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.hsk-article-wrapper .toc-label {
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: var(--space-md);
  padding-left: 1rem;
  line-height: 1.4;
}

.hsk-article-wrapper .toc-list {
  list-style: none !important;
  border-left: 1px solid var(--border);
  padding: 0 !important;
  margin: 0 !important;
  counter-reset: none;
}

.hsk-article-wrapper .toc-list li {
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  list-style: none !important;
  counter-increment: none;
}

.hsk-article-wrapper .toc-list li::before { content: none !important; display: none !important; }
.hsk-article-wrapper .toc-list li::marker { content: none !important; display: none !important; }

.hsk-article-wrapper .toc-list a {
  display: block;
  padding: 0.4rem 0 0.4rem 1rem;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  text-decoration: none;
  transition: all 0.2s;
  line-height: 1.4;
  border-left: 2px solid transparent;
  margin-left: -1px;
}

.hsk-article-wrapper .toc-list a:hover { color: var(--ink); text-decoration: none; }

.hsk-article-wrapper .toc-list a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

.hsk-article-wrapper .toc-list .toc-h3 { padding-left: 1.75rem; font-size: var(--text-xs); }

.hsk-article-wrapper .toc-progress {
  margin-top: var(--space-xl);
  padding-left: 1rem;
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.hsk-article-wrapper .toc-progress .ring-wrap { width: 36px; height: 36px; }
.hsk-article-wrapper .toc-progress svg { transform: rotate(-90deg); }
.hsk-article-wrapper .toc-progress .ring-bg { fill: none; stroke: var(--border); stroke-width: 3; }
.hsk-article-wrapper .toc-progress .ring-fill { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; transition: stroke-dashoffset 0.3s ease; }
.hsk-article-wrapper .toc-progress .progress-text {
  font-size: var(--text-xs);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  font-weight: 500;
  line-height: 1.4;
}

/* ============================================================
   ARTICLE FOOTER
   ============================================================ */
.hsk-article-wrapper .article-footer {
  max-width: var(--content-width);
  margin: var(--space-3xl) auto 0;
  padding: 0 2rem var(--space-4xl);
}

.hsk-article-wrapper .article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border);
}

.hsk-article-wrapper .article-tags .tag {
  font-size: var(--text-xs);
  font-weight: 500;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  background: var(--surface-warm);
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s;
  line-height: 1.4;
}

.hsk-article-wrapper .article-tags .tag:hover {
  border-color: var(--accent-border);
  color: var(--accent);
  background: var(--accent-bg);
  text-decoration: none;
}

/* --- Author Bio --- */
.hsk-article-wrapper .author-bio {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: var(--space-2xl);
}

.hsk-article-wrapper .author-bio .bio-avatar {
  width: 64px;
  height: 64px;
  min-width: 64px;
  border-radius: 50%;
  object-fit: cover;
}

.hsk-article-wrapper .author-bio .bio-name {
  font-family: 'Fraunces', Georgia, serif !important;
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--ink);
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.hsk-article-wrapper .author-bio .bio-role {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.hsk-article-wrapper .author-bio .bio-desc {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  line-height: 1.6;
}

/* --- Continue Reading --- */
.hsk-article-wrapper .related-section {
  margin-bottom: var(--space-4xl);
}

.hsk-article-wrapper .related-section h3 {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-lg);
  padding: 0;
  border: none;
  text-transform: none;
}

.hsk-article-wrapper .related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.hsk-article-wrapper .related-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none !important;
  transition: all 0.25s;
  display: block;
}

.hsk-article-wrapper .related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border-color: var(--accent-border);
  text-decoration: none !important;
}

.hsk-article-wrapper .related-card .rc-image {
  aspect-ratio: 16/9;
  background: var(--surface-warm);
  overflow: hidden;
}

.hsk-article-wrapper .related-card .rc-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  border: none;
}

.hsk-article-wrapper .related-card .rc-content {
  padding: var(--space-md) var(--space-lg);
}

.hsk-article-wrapper .related-card .rc-cat {
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.375rem;
}

.hsk-article-wrapper .related-card .rc-title {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 0.375rem;
}

.hsk-article-wrapper .related-card .rc-excerpt {
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.hsk-article-wrapper .back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-card);
  border: 1px solid var(--border);
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.3s;
  z-index: 800;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  padding: 0;
  font-size: inherit;
  line-height: 1;
  outline: none;
}

.hsk-article-wrapper .back-to-top.visible { opacity: 1; transform: translateY(0); }

.hsk-article-wrapper .back-to-top:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(194, 60, 42, 0.25);
}

.hsk-article-wrapper .back-to-top svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

/* ============================================================
   MOBILE TABLE OF CONTENTS — INLINE (collapsible, top of article)
   ============================================================ */
.hsk-article-wrapper .mobile-toc-inline {
  display: none;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: var(--space-2xl);
  overflow: hidden;
}

.hsk-article-wrapper .mobile-toc-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.875rem 1.125rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.hsk-article-wrapper .mobile-toc-toggle:active {
  background: var(--surface-warm);
}

.hsk-article-wrapper .mobile-toc-toggle .toc-toggle-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hsk-article-wrapper .mobile-toc-toggle .toc-toggle-left svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.hsk-article-wrapper .mobile-toc-toggle .toc-chevron {
  width: 20px;
  height: 20px;
  stroke: var(--ink-muted);
  fill: none;
  stroke-width: 2;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.hsk-article-wrapper .mobile-toc-inline.open .toc-chevron {
  transform: rotate(180deg);
}

.hsk-article-wrapper .mobile-toc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.hsk-article-wrapper .mobile-toc-inline.open .mobile-toc-body {
  max-height: 600px;
}

.hsk-article-wrapper .mobile-toc-links {
  list-style: none !important;
  padding: 0 1.125rem 0.75rem !important;
  margin: 0 !important;
  border-top: 1px solid var(--border-light);
}

.hsk-article-wrapper .mobile-toc-links li {
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  list-style: none !important;
}

.hsk-article-wrapper .mobile-toc-links li::before,
.hsk-article-wrapper .mobile-toc-links li::marker {
  content: none !important;
  display: none !important;
}

.hsk-article-wrapper .mobile-toc-links a {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.6rem 0;
  font-size: var(--text-sm);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color 0.2s;
  border-bottom: 1px solid var(--border-light);
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
}

.hsk-article-wrapper .mobile-toc-links li:last-child a {
  border-bottom: none;
}

.hsk-article-wrapper .mobile-toc-links a .mtoc-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  font-family: 'JetBrains Mono', 'Courier New', monospace !important;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  flex-shrink: 0;
  line-height: 1;
}

.hsk-article-wrapper .mobile-toc-links a:hover,
.hsk-article-wrapper .mobile-toc-links a:active {
  color: var(--accent);
}

.hsk-article-wrapper .mobile-toc-links a.mtoc-active {
  color: var(--accent);
  font-weight: 500;
}

.hsk-article-wrapper .mobile-toc-links a.mtoc-active .mtoc-num {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ============================================================
   MOBILE TOC — FLOATING BUTTON
   ============================================================ */
.hsk-article-wrapper .mobile-toc-fab {
  display: none;
  position: fixed;
  bottom: 5rem;
  right: 1.25rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-card);
  border: 1px solid var(--border);
  color: var(--accent);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1), 0 0 0 0 rgba(194,60,42,0);
  padding: 0;
  font-size: inherit;
  line-height: 1;
  outline: none;
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease, background 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.hsk-article-wrapper .mobile-toc-fab.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.hsk-article-wrapper .mobile-toc-fab:active {
  background: var(--accent-bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transform: scale(0.95);
}

.hsk-article-wrapper .mobile-toc-fab svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

/* ============================================================
   MOBILE TOC — BOTTOM SHEET OVERLAY
   ============================================================ */
.hsk-article-wrapper .mobile-toc-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.hsk-article-wrapper .mobile-toc-overlay.open {
  opacity: 1;
  visibility: visible;
}

.hsk-article-wrapper .mobile-toc-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.hsk-article-wrapper .mobile-toc-sheet {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface-card);
  border-radius: 16px 16px 0 0;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.12);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.hsk-article-wrapper .mobile-toc-overlay.open .mobile-toc-sheet {
  transform: translateY(0);
}

.hsk-article-wrapper .mobile-toc-sheet-handle {
  display: flex;
  justify-content: center;
  padding: 0.75rem 0 0.25rem;
  flex-shrink: 0;
}

.hsk-article-wrapper .mobile-toc-sheet-handle::before {
  content: '';
  width: 36px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
}

.hsk-article-wrapper .mobile-toc-sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}

.hsk-article-wrapper .mobile-toc-sheet-title {
  font-family: 'Fraunces', Georgia, serif !important;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
}

.hsk-article-wrapper .mobile-toc-sheet-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--surface-warm);
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.2s;
}

.hsk-article-wrapper .mobile-toc-sheet-close:active {
  background: var(--border);
}

.hsk-article-wrapper .mobile-toc-sheet-close svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.hsk-article-wrapper .mobile-toc-sheet-body {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: 0.5rem 0 0;
}

.hsk-article-wrapper .mobile-toc-sheet-links {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.hsk-article-wrapper .mobile-toc-sheet-links li {
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  list-style: none !important;
}

.hsk-article-wrapper .mobile-toc-sheet-links li::before,
.hsk-article-wrapper .mobile-toc-sheet-links li::marker {
  content: none !important;
  display: none !important;
}

.hsk-article-wrapper .mobile-toc-sheet-links a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  font-size: var(--text-base);
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif !important;
  color: var(--ink-soft);
  text-decoration: none;
  transition: background 0.15s;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
}

.hsk-article-wrapper .mobile-toc-sheet-links a:active {
  background: var(--surface-warm);
}

.hsk-article-wrapper .mobile-toc-sheet-links a .mtoc-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  font-family: 'JetBrains Mono', 'Courier New', monospace !important;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 5px;
  flex-shrink: 0;
  line-height: 1;
}

.hsk-article-wrapper .mobile-toc-sheet-links a.mtoc-active {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-bg);
}

.hsk-article-wrapper .mobile-toc-sheet-links a.mtoc-active .mtoc-num {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .hsk-article-wrapper .article-layout {
    grid-template-columns: 1fr;
    max-width: var(--content-width);
    gap: 0;
  }
  .hsk-article-wrapper .article-gutter,
  .hsk-article-wrapper .toc-sidebar { display: none; }
  .hsk-article-wrapper .article-hero,
  .hsk-article-wrapper .hero-image-wrap { max-width: var(--content-width); }
  .hsk-article-wrapper .mobile-toc-inline { display: block !important; }
  .hsk-article-wrapper .mobile-toc-fab { display: flex !important; bottom: 2rem !important; right: 1.25rem; }
  .hsk-article-wrapper .mobile-toc-overlay { display: block !important; }
  .hsk-article-wrapper .back-to-top { bottom: 5.5rem; right: 1.25rem; }
}

@media (max-width: 768px) {
  .hsk-article-wrapper {
    font-size: 16px !important;
    --paragraph-spacing: 1.25em;
  }
  .hsk-article-wrapper .article-hero { padding: var(--space-xl) 1.25rem var(--space-lg); }
  .hsk-article-wrapper .hero-image-wrap { padding: 0 1.25rem; }
  .hsk-article-wrapper .article-layout { padding: 0 1.25rem; }
  .hsk-article-wrapper .article-body h2 { font-size: var(--text-2xl); }
  .hsk-article-wrapper .article-body h3 { font-size: var(--text-xl); }
  .hsk-article-wrapper .pull-quote,
  .hsk-article-wrapper .article-figure { margin-left: 0; margin-right: 0; }
  .hsk-article-wrapper .article-footer { padding: 0 1.25rem var(--space-3xl); }
  .hsk-article-wrapper .meta-divider { display: none; }
  .hsk-article-wrapper .article-meta { gap: var(--space-md); }
  .hsk-article-wrapper .author-bio { flex-direction: column; }
  .hsk-article-wrapper .mid-cta .cta-row { flex-direction: column; }
  .hsk-article-wrapper .related-grid { grid-template-columns: 1fr; }
  .hsk-article-wrapper .mobile-toc-fab { bottom: 2.5rem; right: 1rem; }
  .hsk-article-wrapper .back-to-top { bottom: 5.75rem; right: 1rem; }
  .hsk-article-wrapper .article-table { font-size: 1.5rem; }
  .hsk-article-wrapper .article-table th { font-size: 1rem; }
  .hsk-article-wrapper .article-table td { font-size: 1rem!important; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes hskFadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.hsk-article-wrapper .article-hero .category-badge,
.hsk-article-wrapper .article-hero h1,
.hsk-article-wrapper .article-hero .subtitle,
.hsk-article-wrapper .article-meta {
  animation: hskFadeInUp 0.6s ease-out both;
}
.hsk-article-wrapper .article-hero h1 { animation-delay: 0.1s; }
.hsk-article-wrapper .article-hero .subtitle { animation-delay: 0.2s; }
.hsk-article-wrapper .article-meta { animation-delay: 0.3s; }

.hsk-article-wrapper .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.hsk-article-wrapper .reveal.visible { opacity: 1; transform: translateY(0); }