.article-content {
  max-width: 1180px;
}

.solana-guide-layout {
  display: grid;
  grid-template-columns: minmax(210px, 250px) minmax(0, 760px);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
  justify-content: center;
}

.solana-guide-body {
  min-width: 0;
}

.solana-guide-body h2,
.solana-guide-body h3 {
  scroll-margin-top: 7rem;
}

.solana-guide-body table {
  display: block;
  overflow-x: auto;
}

.solana-guide-toc {
  position: sticky;
  top: 6.5rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  padding: 1.15rem 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 12px 28px rgba(22, 30, 39, 0.08);
  scrollbar-width: thin;
}

.solana-guide-toc summary {
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  list-style: none;
  text-transform: uppercase;
}

.solana-guide-toc summary::-webkit-details-marker {
  display: none;
}

.solana-guide-toc summary::after {
  content: "";
}

.solana-guide-toc ol {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.solana-guide-toc li {
  margin: 0;
}

.solana-guide-toc a {
  display: block;
  margin-left: -1.15rem;
  padding: 0.42rem 0.45rem 0.42rem 1rem;
  border-left: 3px solid transparent;
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.35;
  text-decoration: none;
}

.solana-guide-toc a:hover,
.solana-guide-toc a.is-current {
  border-left-color: #12a594;
  color: var(--ink);
}

.solana-guide-toc a.is-current {
  background: color-mix(in srgb, #12a594 8%, transparent);
  font-weight: 700;
}

.solana-guide-callout {
  margin: 2rem 0;
  padding: clamp(1.2rem, 3vw, 1.65rem);
  border: 1px solid color-mix(in srgb, #12a594 34%, var(--line));
  border-left: 4px solid #12a594;
  border-radius: var(--radius);
  background: var(--surface);
  background: color-mix(in srgb, #12a594 7%, var(--surface));
}

.solana-guide-callout--warning {
  border-color: color-mix(in srgb, #c88118 38%, var(--line));
  border-left-color: #c88118;
  background: var(--surface);
  background: color-mix(in srgb, #c88118 7%, var(--surface));
}

.solana-guide-callout--neutral {
  border-color: var(--line);
  border-left-color: var(--line-strong);
  background: var(--surface);
}

.solana-guide-callout > :first-child,
.solana-guide-panel > :first-child,
.financial-disclaimer > :first-child {
  margin-top: 0;
}

.solana-guide-callout > :last-child,
.solana-guide-panel > :last-child,
.financial-disclaimer > :last-child {
  margin-bottom: 0;
}

.solana-guide-callout h3 {
  margin-top: 0;
}

.solana-guide-skill {
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
  margin: -0.15rem 0 1.35rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid color-mix(in srgb, #12a594 32%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, #12a594 7%, var(--surface));
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1;
}

.solana-guide-skill span {
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.solana-guide-skill strong {
  color: var(--ink);
}

.solana-guide-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.25rem;
}

.solana-guide-panel {
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.solana-guide-panel h3 {
  margin: 0 0 0.7rem;
  font-size: 0.82rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.solana-guide-panel--pros h3 {
  color: #167564;
}

.solana-guide-panel--cons h3 {
  color: #a85d13;
}

.solana-guide-panel ul {
  margin-bottom: 0;
}

.solana-guide-body .article-figure img {
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 0.75);
  background: var(--surface);
}

.solana-guide-body .article-figure--portrait img {
  width: min(100%, 560px);
  margin-right: auto;
  margin-left: auto;
}

.solana-guide-body .article-figure--compact img {
  width: min(100%, 430px);
  margin-right: auto;
  margin-left: auto;
}

.financial-disclaimer {
  margin-top: 3rem;
  padding: 1.25rem 1.4rem;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

.financial-disclaimer h2 {
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .article-content {
    max-width: 760px;
  }

  .solana-guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }

  .solana-guide-toc {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .solana-guide-toc summary {
    display: flex;
    justify-content: space-between;
    cursor: pointer;
  }

  .solana-guide-toc summary::after {
    content: "+";
    font-size: 1.1rem;
    line-height: 0.8;
  }

  .solana-guide-toc[open] summary::after {
    content: "−";
  }
}

@media (max-width: 620px) {
  .solana-guide-columns {
    grid-template-columns: 1fr;
  }

  .solana-guide-toc {
    padding: 1rem;
  }

  .solana-guide-toc a {
    margin-left: -1rem;
    padding-left: 0.85rem;
  }

  .solana-guide-skill {
    align-items: flex-start;
    border-radius: var(--radius);
    line-height: 1.25;
  }
}