[hidden] {
  display: none !important;
}
.nav [aria-current="page"] {
  color: var(--accent);
}
.resource-main {
  padding-block: 64px 88px;
}
.resource-intro {
  max-width: 760px;
  margin-bottom: 48px;
}
.resource-intro h1,
.article-header h1 {
  font-size: clamp(32px, 4.3vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.045em;
  margin: 16px 0 22px;
}
.resource-intro > p:last-child,
.article-description {
  color: var(--muted);
  font-size: 19px;
  line-height: 1.65;
  max-width: 680px;
}
.resource-filters {
  display: flex;
  align-items: end;
  gap: 16px;
  flex-wrap: wrap;
}
.resource-filters label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}
.resource-select {
  display: grid;
  gap: 8px;
}
.resource-search {
  flex: 1;
  min-width: 220px;
}
.resource-filters input,
.resource-filters select {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  padding: 10px 14px;
  color: var(--ink);
}
.resource-count {
  color: var(--muted);
  font-size: 14px;
  margin: 20px 0;
}
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 24px;
}
.resource-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px;
  max-width: 760px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  transition: border-color 180ms ease;
}
.resource-card:hover {
  border-color: var(--accent);
}
.resource-card h2 {
  font-size: 25px;
  letter-spacing: -0.025em;
  line-height: 1.3;
  margin: 12px 0;
}
.resource-card h2 a::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 24px;
}
.resource-card h2 a:focus-visible {
  outline: none;
}
.resource-card:focus-within {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
.resource-card > p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.65;
  margin: 0 0 28px;
}
.resource-card-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}
.resource-card-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 400;
}
.resource-empty {
  padding: 48px 0;
  color: var(--muted);
}
.resource-empty h2 {
  font-size: 24px;
  color: var(--ink);
}
.resource-breadcrumb {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 36px;
}
.resource-breadcrumb a {
  color: var(--accent);
}
.article-header {
  max-width: 850px;
  padding-bottom: 38px;
}
.article-byline {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}
.article-reading-time {
  white-space: nowrap;
}
.article-views {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  vertical-align: middle;
  white-space: nowrap;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 720px) minmax(180px, 1fr);
  gap: 56px;
  align-items: start;
}
.article-prose {
  grid-row: 1;
  grid-column: 1;
  min-width: 0;
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
.article-prose h2 {
  font-size: 28px;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin: 48px 0 18px;
}
.article-prose > h2:first-child {
  margin-top: 0;
}
.article-prose h3 {
  font-size: 21px;
  margin-top: 30px;
  line-height: 1.4;
}
.article-prose h2,
.article-prose h3 {
  scroll-margin-top: 105px;
}
.article-prose p,
.article-prose li {
  color: var(--muted);
}
.article-prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-prose blockquote {
  border-left: 3px solid var(--accent);
  margin: 26px 0;
  padding: 1px 22px;
  background: var(--soft);
  border-radius: 0 14px 14px 0;
}
.article-prose img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-prose th,
.article-prose td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
}
.article-prose th {
  color: var(--ink);
  background: var(--soft);
}
.article-prose code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.88em;
}
.article-prose :not(pre) > code {
  background: var(--soft);
  border-radius: 4px;
  padding: 2px 5px;
}
.article-prose pre {
  padding: 22px;
  overflow: auto;
  background: var(--surface-muted);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 16px;
  line-height: 1.7;
}
.article-equation {
  overflow-x: auto;
  padding: 18px 20px;
  margin: 22px 0;
  border-radius: 14px;
  background: var(--soft);
  color: var(--ink);
  font-size: 0.96em;
}
.article-equation .katex-display {
  margin: 0;
}
.article-equation .katex-display > .katex {
  text-align: left;
}
.article-toc {
  grid-column: 2;
  grid-row: 1;
  position: sticky;
  top: 110px;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}
.article-toc h2 {
  font-size: 14px;
  margin: 0 0 16px;
}
.article-toc ol {
  display: grid;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}
.article-toc a:hover {
  color: var(--accent);
}
.resource-related {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.resource-related > h2 {
  font-size: 24px;
  margin-bottom: 24px;
}
.article-sharing {
  max-width: 720px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.article-share-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
}
.article-share-label {
  font-weight: 500;
}
.article-share-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-share-item {
  display: grid;
  grid-template-rows: 44px 18px;
  justify-items: center;
  width: 44px;
}
.article-share-item:has(> .article-share-control[hidden]) {
  display: none;
}
.article-share-count {
  font-size: 11px;
  line-height: 18px;
  font-variant-numeric: tabular-nums;
}
.article-share-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: inherit;
  background: var(--bg);
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  transition:
    background-color 160ms ease,
    color 160ms ease;
}
.article-share-control:hover,
.article-share-control:focus-visible {
  color: var(--accent);
  background: var(--soft);
}
.article-share-status {
  min-height: 20px;
  margin: 8px 0 0;
  line-height: 1.5;
  text-align: right;
}
.article-share-manual {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.article-share-manual input {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}
.article-sharing button:disabled {
  cursor: wait;
  opacity: 0.65;
}
.article-next-step {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  margin-top: 64px;
  padding: 32px;
  background: var(--soft);
  border-radius: 24px;
}
.article-next-step h2 {
  font-size: 27px;
  letter-spacing: -0.025em;
  margin: 12px 0;
}
.article-next-step p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
  max-width: 460px;
}
.article-next-step .eyebrow {
  color: var(--accent);
}
.article-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}
@media (max-width: 900px) {
  .resource-main {
    padding-block: 40px 64px;
  }
  .article-layout {
    display: flex;
    flex-direction: column;
    gap: 32px;
  }
  .article-toc {
    position: static;
    padding: 20px 24px;
    border: 0;
    border-radius: 18px;
    background: var(--soft);
    width: 100%;
  }
  .article-prose {
    width: 100%;
    font-size: 16px;
  }
  .article-prose th,
  .article-prose td {
    padding: 10px 6px;
  }
  .resource-card {
    padding: 24px;
  }
  .article-next-step {
    flex-direction: column;
    align-items: start;
    padding: 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .resource-card,
  .article-share-control {
    transition: none;
  }
}