.s-article-detail {
  --s-article-detail-measure: 44rem;
  --s-article-detail-wide: 52rem;
  position: relative;
  overflow-x: hidden;
  padding: clamp(2.5rem, 6vw, 5rem) 1.25rem clamp(4rem, 8vw, 7rem);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--surface) 72%, transparent), transparent 18rem),
    linear-gradient(90deg, color-mix(in srgb, var(--accent-teal) 9%, transparent), transparent 28%),
    var(--bg);
}

@supports (overflow: clip) {
  .s-article-detail {
    overflow-x: clip;
  }
}

.s-article-detail,
.s-article-detail * {
  min-width: 0;
}

.s-article-detail::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--text) 5%, transparent) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--accent-forest) 4%, transparent) 0 1px, transparent 1px 18px);
  opacity: 0.22;
}

.s-article-detail__progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: 0.3rem;
  background: transparent;
}

.s-article-detail__progress-fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-soft));
}

.s-article-detail__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 76rem;
  margin: 0 auto;
}

.s-article-detail__crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  width: 100%;
  max-width: 68rem;
  margin: 0 auto 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.s-article-detail__crumbs a {
  text-decoration: none;
}

.s-article-detail__hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 19rem);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: end;
  width: 100%;
  max-width: 68rem;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 2.6rem);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface) 94%, transparent), color-mix(in srgb, var(--surface-muted) 96%, transparent)),
    var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.s-article-detail__hero-copy {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.s-article-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.s-article-detail__tag,
.s-article-detail__status,
.s-article-detail__facts p,
.s-article-detail__rail-kicker,
.s-article-detail__tags li {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
}

.s-article-detail__tag {
  color: var(--accent);
}

.s-article-detail__status {
  padding: 0.28rem 0.68rem;
  color: var(--accent-teal);
  background: color-mix(in srgb, var(--accent-teal) 14%, transparent);
  border-radius: var(--radius-pill);
}

.s-article-detail__title {
  max-width: 48rem;
  margin: 0;
  color: var(--text);
  font-size: 2.7rem;
  line-height: 1.28;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.s-article-detail__summary {
  max-width: var(--s-article-detail-measure);
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.95;
  overflow-wrap: anywhere;
}

.s-article-detail__facts,
.s-article-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.s-article-detail__facts p {
  padding: 0.35rem 0.72rem;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-strong) 46%, transparent);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
}

.s-article-detail__tags li {
  padding: 0.35rem 0.75rem;
  color: var(--accent-forest);
  background: color-mix(in srgb, var(--accent-forest) 11%, transparent);
  border-radius: var(--radius-pill);
}

.s-article-detail__cover {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
}

.s-article-detail__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--surface) 46%, transparent);
}

.s-article-detail__cover img {
  width: 100%;
  height: 100%;
  max-height: 18rem;
  object-fit: cover;
}

.s-article-detail__reading {
  display: grid;
  grid-template-columns: minmax(12rem, 16rem) minmax(0, var(--s-article-detail-wide));
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  justify-content: center;
  margin-top: clamp(2rem, 5vw, 4rem);
}

.s-article-detail__rail {
  position: sticky;
  top: 1.5rem;
}

.s-article-detail__rail-card {
  padding: 1rem;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
}

.s-article-detail__rail-card--mobile {
  display: none;
}

.s-article-detail__rail-kicker {
  color: var(--accent-teal);
}

.s-article-detail__rail-title {
  margin: 0.25rem 0 0.8rem;
  font-size: 1.05rem;
  line-height: 1.45;
}

.s-article-detail__toc {
  display: grid;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.s-article-detail__toc a {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.55rem;
  padding: 0.55rem 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
  text-decoration: none;
  border-top: 1px solid var(--line-soft);
  overflow-wrap: anywhere;
}

.s-article-detail__toc span {
  color: var(--accent);
  font-weight: 700;
}

.s-article-detail__toc a:hover,
.s-article-detail__toc a:focus-visible {
  color: var(--text);
}

.s-article-detail__toc a.is-active {
  color: var(--text);
  font-weight: 600;
}

.s-article-detail__toc a.is-active span {
  color: var(--accent-teal);
}

.s-article-detail__toc-summary {
  padding: 0.65rem 0;
  color: var(--accent-teal);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.s-article-detail__toc-summary::-webkit-details-marker {
  display: none;
}

.s-article-detail__toc-summary::before {
  content: "\25B6 ";
  font-size: 0.7em;
}

details[open] > .s-article-detail__toc-summary::before {
  content: "\25BC ";
}

.s-article-detail__body {
  display: grid;
  gap: 1.15rem;
  width: 100%;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 3rem);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent-soft) 10%, transparent) 0 0.22rem, transparent 0.22rem),
    linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--surface-muted) 88%, transparent)),
    var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}

.s-article-detail__heading,
.s-article-detail__subheading,
.s-article-detail__paragraph,
.s-article-detail__note,
.s-article-detail__quote,
.s-article-detail__list {
  width: 100%;
  max-width: var(--s-article-detail-measure);
  margin-right: auto;
  margin-left: auto;
}

.s-article-detail__heading {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: baseline;
  margin-top: 3.25rem;
  padding-top: 1.5rem;
  color: var(--text);
  font-size: 1.72rem;
  line-height: 1.5;
  letter-spacing: 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 7rem;
}

.s-article-detail__heading:first-child {
  margin-top: 0;
}

.s-article-detail__heading span {
  color: var(--accent-teal);
  font-size: 0.92rem;
  font-weight: 700;
}

.s-article-detail__subheading {
  margin-top: 2rem;
  padding-left: 0.85rem;
  color: var(--accent-forest);
  font-size: 1.24rem;
  line-height: 1.55;
  border-left: 3px solid color-mix(in srgb, var(--accent-forest) 50%, transparent);
}

.s-article-detail__paragraph {
  margin-top: 0;
  margin-bottom: 0;
  color: var(--text);
  font-size: 1.04rem;
  line-height: 2.05;
  overflow-wrap: anywhere;
}

.s-article-detail__body a:not(.button) {
  color: color-mix(in srgb, var(--accent-teal) 78%, var(--text));
  font-weight: 700;
  text-decoration-color: color-mix(in srgb, var(--accent-teal) 62%, transparent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.s-article-detail__body a:not(.button):hover,
.s-article-detail__body a:not(.button):focus-visible {
  color: var(--accent);
  text-decoration-color: currentColor;
}

.s-article-detail__note {
  padding: 1.15rem 1.25rem;
  background: color-mix(in srgb, var(--surface-strong) 54%, var(--surface));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.s-article-detail__note--accent {
  background: color-mix(in srgb, var(--accent-soft) 20%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
}

.s-article-detail__note-title,
.s-article-detail__note-text {
  margin: 0;
}

.s-article-detail__note-title {
  margin-bottom: 0.5rem;
  color: var(--accent);
  font-weight: 700;
}

.s-article-detail__note-text {
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.s-article-detail__quote {
  padding: 1.25rem 1.35rem;
  background: color-mix(in srgb, var(--accent-teal) 8%, var(--surface));
  border-left: 0.28rem solid var(--accent-teal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.s-article-detail__quote blockquote,
.s-article-detail__quote p,
.s-article-detail__quote figcaption {
  margin: 0;
}

.s-article-detail__quote p {
  line-height: 1.95;
}

.s-article-detail__quote figcaption {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.s-article-detail__list {
  display: grid;
  gap: 0.65rem;
  padding-left: 1.35rem;
  line-height: 1.95;
  overflow-wrap: anywhere;
}

.s-article-detail__figure,
.s-article-detail__table-wrap,
.s-article-detail__cta {
  width: 100%;
  max-width: var(--s-article-detail-wide);
  margin: 0 auto;
}

.s-article-detail__figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.s-article-detail__figure figcaption,
.s-article-detail__table-wrap figcaption {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.s-article-detail__table-wrap {
  overflow-x: auto;
  max-width: 100%;
  padding: 0.65rem;
  background: color-mix(in srgb, var(--surface) 72%, var(--surface-muted));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.s-article-detail__table {
  width: 100%;
  min-width: 28rem;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.s-article-detail__table th,
.s-article-detail__table td {
  padding: 0.9rem 1rem;
  text-align: left;
  vertical-align: top;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.s-article-detail__table th:last-child,
.s-article-detail__table td:last-child {
  border-right: 0;
}

.s-article-detail__table tr:last-child td {
  border-bottom: 0;
}

.s-article-detail__table th {
  color: var(--text);
  background: color-mix(in srgb, var(--accent-teal) 13%, var(--surface-strong));
  font-weight: 700;
}

.s-article-detail__table td {
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.s-article-detail__cta {
  display: grid;
  gap: 0.8rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent-forest) 11%, var(--surface)), color-mix(in srgb, var(--accent-soft) 18%, var(--surface)));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.s-article-detail__cta-title,
.s-article-detail__cta-text {
  margin: 0;
}

.s-article-detail__cta-title {
  font-size: 1.25rem;
  line-height: 1.5;
}

.s-article-detail__cta-text {
  color: var(--muted);
  line-height: 1.85;
}

.s-article-detail__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
  width: 100%;
  max-width: 68rem;
  margin: 1.5rem auto 0;
}

.s-article-detail__code-wrap {
  width: 100%;
  max-width: var(--s-article-detail-wide);
  margin: 0.5rem auto;
}

.s-article-detail__code {
  margin: 0;
  padding: 1.25rem 1.5rem;
  font-family: "JetBrains Mono", "Source Code Pro", "Consolas", monospace;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text);
  background: color-mix(in srgb, var(--surface-strong) 60%, var(--surface));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  white-space: pre;
  tab-size: 2;
}

.s-article-detail__code-wrap figcaption {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

/* --- details (accordion) --- */

.s-article-detail__details {
  width: 100%;
  max-width: var(--s-article-detail-measure);
  margin: 0.5rem auto;
  background: color-mix(in srgb, var(--surface-strong) 38%, var(--surface));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.s-article-detail__details[open] {
  border-color: color-mix(in srgb, var(--accent-teal) 35%, var(--line));
}

.s-article-detail__details-summary {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 1rem 1.25rem;
  color: var(--accent-teal);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  cursor: pointer;
  list-style: none;
  transition: background 0.15s ease;
}

.s-article-detail__details-summary:hover {
  background: color-mix(in srgb, var(--accent-teal) 8%, transparent);
}

.s-article-detail__details-summary::-webkit-details-marker {
  display: none;
}

.s-article-detail__details-summary::before {
  content: "\25B6";
  font-size: 0.65em;
  transition: transform 0.2s ease;
}

.s-article-detail__details[open] > .s-article-detail__details-summary::before {
  transform: rotate(90deg);
}

.s-article-detail__details-body {
  display: grid;
  gap: 1rem;
  padding: 0 1.25rem 1.25rem;
}

.s-article-detail__details-body .s-article-detail__paragraph,
.s-article-detail__details-body .s-article-detail__list,
.s-article-detail__details-body .s-article-detail__quote {
  max-width: none;
}

.s-article-detail__details-body .s-article-detail__code-wrap,
.s-article-detail__details-body .s-article-detail__table-wrap {
  max-width: none;
}

@media (max-width: 980px) {
  .s-article-detail__reading {
    grid-template-columns: minmax(0, var(--s-article-detail-wide));
  }

  .s-article-detail__rail {
    position: static;
  }

  .s-article-detail__rail-card--desktop {
    display: none;
  }

  .s-article-detail__rail-card--mobile {
    display: block;
  }

  .s-article-detail__toc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1rem;
  }
}

@media (max-width: 760px) {
  .s-article-detail {
    padding: 2rem 1rem 4rem;
  }

  .s-article-detail__hero {
    grid-template-columns: 1fr;
    padding: 1.25rem;
  }

  .s-article-detail__title {
    font-size: 1.86rem;
  }

  .s-article-detail__cover img {
    max-height: none;
    aspect-ratio: 16 / 10;
  }

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

  .s-article-detail__body {
    padding: 1.25rem;
    border-radius: var(--radius-sm);
  }

  .s-article-detail__heading {
    grid-template-columns: 1fr;
    gap: 0.25rem;
    margin-top: 2.5rem;
    font-size: 1.45rem;
  }

  .s-article-detail__paragraph {
    font-size: 1rem;
    line-height: 2;
  }

  .s-article-detail__table {
    min-width: 100%;
  }

  .s-article-detail__code {
    padding: 1rem 1.15rem;
    font-size: 0.8rem;
  }
}