/* ===================================================
   ARTICLE
=================================================== */
.art-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    0deg, transparent, transparent 59px,
    rgba(255,255,255,0.025) 59px, rgba(255,255,255,0.025) 60px
  );
}
.art-hero-label {
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.35); margin-bottom: 1rem; font-weight: 300;
}
.art-hero-sub {
  font-size: 0.88rem; color: rgba(255,255,255,0.5);
  font-weight: 300; letter-spacing: 0.05em;
}
.art-hero-lang:hover { border-color: var(--g-sage); color: var(--g-sage); }
/* Requirements */
.requirements {
  background: var(--cream);
  border-left: 3px solid var(--g-field);
  padding: 1.8rem 2rem;
  margin-bottom: 4rem;
}
.requirements h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--g-field); margin-bottom: 1rem;
}
.requirements ul { list-style: none; padding: 0; margin: 0; }
.requirements ul li {
  font-size: 0.88rem; color: var(--text); padding: 0.4rem 0;
  display: flex; align-items: baseline; gap: 0.8rem;
}
.requirements ul li::before {
  content: '✓'; color: var(--g-sage); font-size: 0.8rem; flex-shrink: 0;
}
.step-header {
  display: flex; align-items: baseline; gap: 1.2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.step ul, .step ol { padding-left: 1.5rem; margin-bottom: 1rem; }
/* Figures */
.art-figure { margin: 1.8rem 0 2.2rem; }
.art-figure img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--border); border-radius: var(--radius-flat);
  background: var(--cream);
}
.art-figure figcaption {
  font-size: 0.78rem; color: var(--text-light);
  line-height: 1.6; margin-top: 0.7rem;
}
.art-figure figcaption b { color: var(--g-field); font-weight: 500; }
.fig-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; align-items: start; }
/* Video */
.art-video { margin: 1.8rem 0 2.2rem; text-align: center; }
.art-video video {
  width: 100%; max-width: 340px; height: auto; display: block; margin: 0 auto;
  border: 1px solid var(--border); border-radius: var(--radius-flat); background: #000;
}
.art-video figcaption {
  font-size: 0.78rem; color: var(--text-light);
  line-height: 1.6; margin-top: 0.7rem;
}
/* Filming tips */
.tips { list-style: none !important; padding: 0 !important; margin: 0.5rem 0 1rem; }
.tips li::before {
  content: '▸';
  position: absolute; left: 0; top: 0;
  color: var(--rice-gold); font-size: 0.85rem;
}
.tips li strong { color: var(--g-deep); font-weight: 500; }
/* UI box */
.ui-box {
  border: 1px solid var(--border);
  padding: 1.2rem 1.5rem;
  margin: 1.2rem 0;
  background: var(--white);
}
.ui-box-label {
  font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-light); margin-bottom: 0.6rem;
}
/* Callout */
.callout {
  border-left: 3px solid var(--rice-gold);
  background: rgba(201,168,76,0.05);
  padding: 1rem 1.5rem;
  margin: 1.2rem 0;
}
.callout--warn {
  border-left-color: #c4554d;
  background: rgba(196,85,77,0.05);
}
.art-divider { border: none; border-top: 1px solid var(--border); margin: 4rem 0; }
.art-footer-nav {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap; gap: 1rem;
}
.art-back {
  font-size: 0.82rem; color: var(--g-field);
  text-decoration: none; letter-spacing: 0.05em;
}
.art-back:hover { color: var(--g-sage); }
.art-body p a, .art-body li a, .art-body .ui-box a, .art-body .callout a {
  color: var(--g-field);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(45,106,79,0.4);
  transition: color var(--t-quick), text-decoration-color var(--t-quick);
}
.art-body p a:hover, .art-body li a:hover {
  color: var(--g-sage);
  text-decoration-color: var(--g-sage);
}
.art-hero-toc:hover, .art-hero-lang:hover { border-color: var(--g-sage); color: var(--g-sage); }
.step-h {
  display: flex; align-items: baseline; gap: 1.2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.code-label {
  font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-light); margin-bottom: 0.5rem;
}
/* Required-reading book cards */
.book-list {
  display: flex; flex-direction: column;
  gap: 1rem;
  margin: 1.5rem 0;
}
.book-card {
  display: block;
  border: 1px solid var(--border);
  padding: 1.4rem 1.6rem;
  background: var(--white);
  text-decoration: none;
  transition: background var(--t-quick), border-color var(--t-quick);
}
.book-card:hover {
  background: var(--cream);
  border-color: var(--g-sage);
}
.book-meta {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--g-field);
  margin-bottom: 0.6rem;
}
.book-title {
  font-size: 1rem; font-weight: 500; color: var(--text);
  margin-bottom: 0.4rem; line-height: 1.5;
  word-break: keep-all; overflow-wrap: anywhere;
}
.book-authors {
  font-size: 0.78rem; color: var(--text-light);
  margin-bottom: 0.6rem;
}
.book-why {
  font-size: 0.85rem; color: var(--text-mid); line-height: 1.7;
}
/* GitHub link button */
.repo-button {
  display: inline-block;
  padding: 0.9rem 1.8rem;
  background: var(--g-field);
  color: var(--white);
  text-decoration: none;
  font-size: 0.88rem;
  letter-spacing: 0.05em;
  transition: background var(--t-quick);
  margin-top: 1rem;
}
.repo-button:hover { background: var(--g-deep); }
/* Sections */
.section {
  margin-bottom: 4rem;
}
.section-h {
  display: flex; align-items: baseline; gap: 1.2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.section-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem; font-weight: 300;
  color: var(--g-sage); line-height: 1;
  flex-shrink: 0;
}
.section-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.05rem; font-weight: 400; color: var(--text);
}
.section p {
  font-size: 0.92rem; color: var(--text-mid); line-height: 1.95;
  margin-bottom: 1rem;
}
.section ul, .section ol {
  padding-left: 1.5rem; margin-bottom: 1rem;
}
.section li {
  font-size: 0.9rem; color: var(--text-mid); line-height: 1.85;
  margin-bottom: 0.5rem;
}
/* Series nav */
.series-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem; align-items: center;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}
.series-nav-prev, .series-nav-next {
  font-size: 0.82rem; text-decoration: none;
  color: var(--text-mid);
  transition: color var(--t-quick);
}
.series-nav-prev { text-align: left; }
.series-nav-next { text-align: right; }
.series-nav-toc {
  font-size: 0.78rem; color: var(--g-field);
  text-decoration: none; letter-spacing: 0.05em;
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
}
.series-nav a:hover { color: var(--g-sage); }
.nav-label {
  font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-light); display: block; margin-bottom: 0.3rem;
}
/* Prompt box */
.prompt-box {
  background: var(--cream);
  border-left: 3px solid var(--g-sage);
  padding: 1.2rem 1.5rem;
  margin: 1.2rem 0;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.85;
}
.prompt-box::before {
  content: 'PROMPT';
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.65rem; letter-spacing: 0.2em;
  color: var(--g-field);
  margin-bottom: 0.6rem;
}
/* Comparison table */
.compare-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.compare-cell {
  border: 1px solid var(--border);
  padding: 1.2rem 1.5rem;
  background: var(--white);
}
.compare-cell h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem; color: var(--g-field);
  margin-bottom: 0.8rem;
  letter-spacing: 0.05em;
}
.compare-cell ul {
  padding-left: 1.2rem; margin: 0;
}
.compare-cell ul li {
  font-size: 0.82rem; color: var(--text-mid);
  margin-bottom: 0.3rem;
}
/* Completion block */
.completion {
  background: var(--g-deep);
  color: var(--white);
  padding: 3rem 2.5rem;
  margin: 4rem 0 2rem;
  text-align: center;
}
.completion h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 300;
  margin-bottom: 1rem;
  color: var(--g-sage);
  letter-spacing: 0.05em;
}
.completion p {
  font-size: 0.92rem; line-height: 1.9;
  color: rgba(255,255,255,0.75);
  margin: 0 auto 1rem; max-width: 560px;
}
/* Path comparison */
.path-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.path-card {
  border: 1px solid var(--border);
  padding: 1.4rem 1.6rem;
  background: var(--white);
  min-width: 0;
}
.path-card.path-card--current {
  border-color: var(--g-sage);
  background: var(--cream);
}
.path-meta {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--g-field);
  margin-bottom: 0.6rem;
}
.path-card--current .path-meta { color: var(--g-sage); }
.path-title {
  font-size: 1rem; font-weight: 500; color: var(--text);
  margin-bottom: 0.8rem; line-height: 1.5;
  word-break: keep-all; overflow-wrap: anywhere;
}
.path-card ul {
  padding-left: 1.2rem; margin: 0;
}
.path-card ul li {
  font-size: 0.82rem; color: var(--text-mid);
  margin-bottom: 0.4rem; line-height: 1.6;
}
/* Blog link button */
.blog-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--g-field);
  color: var(--white);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: background var(--t-quick);
  margin-top: 1rem;
}
.blog-button:hover { background: var(--g-deep); }
/* Side-by-side: source vs rendered */
.compare-md {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.2rem 0;
}
.compare-md > div {
  border: 1px solid var(--border);
  padding: 1rem 1.2rem;
  background: var(--white);
  font-size: 0.85rem;
  line-height: 1.7;
}
.compare-md .src {
  background: #f6f5ef;
  font-family: 'Courier New', Courier, monospace;
  white-space: pre-wrap;
  color: var(--text);
}
.compare-md .preview h2.preview-h {
  font-size: 1.2rem; margin: 0 0 0.4rem; color: var(--text); font-weight: 600;
}
.compare-md .preview h3.preview-h {
  font-size: 1rem; margin: 0.6rem 0 0.3rem; color: var(--text); font-weight: 600;
}
.compare-md-label {
  font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-light); margin-bottom: 0.4rem;
}
/* Section label */
.sec-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.78rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--g-field); margin-bottom: 1.2rem;
  display: flex; align-items: center; gap: 1rem;
}
.sec-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }
/* Goal box */
.goal-box {
  background: var(--cream);
  border-left: 3px solid var(--g-field);
  padding: 1.8rem 2rem;
  margin-bottom: 4rem;
}
.goal-box h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.78rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--g-field); margin-bottom: 1rem;
}
.goal-box ul {
  list-style: none; padding: 0; margin: 0;
}
.goal-box ul li {
  font-size: 0.92rem; color: var(--text); padding: 0.4rem 0;
  display: flex; align-items: baseline; gap: 0.8rem;
}
.goal-box ul li::before {
  content: '✓'; color: var(--g-sage); font-size: 0.9rem; flex-shrink: 0;
}
/* Table of contents */
.toc-list {
  display: flex; flex-direction: column; gap: 1rem;
  margin-bottom: 4rem;
}
.toc-card {
  display: grid;
  grid-template-columns: 100px 1fr 60px;
  gap: 2rem; align-items: center;
  padding: 1.8rem 2rem;
  border: 1px solid var(--border);
  background: var(--white);
  text-decoration: none; color: var(--text);
  transition: background var(--t-quick), border-color var(--t-quick), transform var(--t-quick);
}
.toc-card:hover {
  background: var(--cream);
  border-color: var(--g-sage);
}
.toc-card:hover .toc-arrow {
  color: var(--g-field);
  transform: translateX(4px);
}
.toc-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem; font-weight: 300;
  color: var(--g-sage); line-height: 1;
  text-align: center;
}
.toc-body { min-width: 0; }
.toc-body h3 {
  font-size: 1.05rem; color: var(--text); font-weight: 500;
  margin-bottom: 0.5rem; line-height: 1.4;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.toc-body p {
  font-size: 0.85rem; color: var(--text-mid); line-height: 1.7;
  margin: 0;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.toc-arrow {
  font-size: 1.2rem; color: var(--border);
  text-align: right;
  transition: color var(--t-quick), transform var(--t-quick);
}
/* Call to action */
.cta-section {
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--g-field);
  color: var(--white);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  transition: background var(--t-quick);
}
.cta-button:hover { background: var(--g-deep); }
.cta-back {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.82rem;
  color: var(--text-mid);
  text-decoration: none;
}
.cta-back:hover { color: var(--g-sage); }
.art-body p a:hover, .art-body li a:hover, .art-body .ui-box a:hover, .art-body .callout a:hover {
  color: var(--g-sage);
  text-decoration-color: var(--g-sage);
}

@media (max-width: 640px) {
  .fig-pair { grid-template-columns: 1fr; }
  .book-card { padding: 1.2rem 1.3rem; }
  .section-num { font-size: 2rem; }
  .series-nav { grid-template-columns: 1fr; text-align: center; }
  .series-nav-prev, .series-nav-next { text-align: center; }
  .compare-table { grid-template-columns: 1fr; }
  .completion { padding: 2.5rem 1.5rem; }
  .path-compare { grid-template-columns: 1fr; }
  .compare-md { grid-template-columns: 1fr; }
  .toc-card { grid-template-columns: 60px 1fr; gap: 1.2rem; padding: 1.5rem; }
  .toc-num { font-size: 2.2rem; }
  .toc-arrow { display: none; }
}