.about-shell {
  width: min(1240px, calc(100% - 30px));
  margin: 30px auto 46px;
}

.active-nav {
  color: #fff !important;
}

.about-hero {
  padding: clamp(26px, 5vw, 54px);
  background:
    radial-gradient(circle at 80% 0%, rgba(30, 198, 185, 0.1), transparent 36%),
    linear-gradient(135deg, rgba(5, 18, 32, 0.98), rgba(2, 12, 24, 0.96));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.about-hero h2 {
  margin: 9px 0 13px;
  color: #efffff;
  font-family: "Libertinus Serif", serif;
  font-size: clamp(34px, 5vw, 54px);
}

.about-hero p {
  max-width: 920px;
  margin: 0;
  color: #9ed0c7;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 300;
}

.about-stack {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.about-stack span {
  padding: 7px 11px;
  color: #a9ebe0;
  background: rgba(6, 45, 48, 0.55);
  border: 1px solid rgba(55, 218, 207, 0.22);
  border-radius: 999px;
  font-size: 11px;
}

.docs-layout {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.docs-toc {
  position: sticky;
  top: 88px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(2, 14, 27, 0.92);
  border: 1px solid rgba(45, 94, 99, 0.52);
  border-radius: 12px;
}

.docs-toc strong {
  margin-bottom: 6px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.7px;
}

.docs-toc a {
  padding: 8px 9px;
  color: #83abae;
  border-radius: 7px;
  font-size: 12px;
}

.docs-toc a:hover {
  color: #dffff9;
  background: rgba(11, 62, 65, 0.48);
}

.docs-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.doc-section {
  scroll-margin-top: 90px;
  padding: clamp(20px, 3vw, 30px);
  background: rgba(3, 15, 28, 0.9);
  border: 1px solid rgba(43, 85, 91, 0.52);
  border-radius: 15px;
}

.doc-section > h3 {
  margin: 6px 0 14px;
  color: #ebffff;
  font-family: "Libertinus Serif", serif;
  font-size: 26px;
}

.doc-section > p,
.doc-topic > p {
  color: #91b7b5;
  font-size: 14px;
  line-height: 1.75;
  font-weight: 300;
}

.workflow-grid,
.method-grid,
.visual-docs,
.recipe-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.workflow-grid article,
.method-card,
.visual-docs article,
.recipe-grid article {
  min-width: 0;
  padding: 15px;
  background: rgba(5, 25, 38, 0.72);
  border: 1px solid rgba(48, 100, 102, 0.4);
  border-radius: 11px;
}

.workflow-grid article {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 5px 8px;
}

.workflow-grid i {
  grid-row: 1 / 3;
  color: var(--teal);
  font-size: 17px;
}

.workflow-grid b,
.recipe-grid b {
  color: #d9f7f4;
}

.workflow-grid p,
.method-card p,
.visual-docs p,
.recipe-grid li {
  margin: 3px 0 0;
  color: #83a8a9;
  font-size: 12px;
  line-height: 1.6;
}

.method-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.method-card h4,
.visual-docs h4 {
  margin: 0 0 8px;
  color: #cafff6;
  font-size: 15px;
}

.method-card em {
  display: block;
  margin-top: 8px;
  color: #6b9796;
  font-size: 11px;
  font-style: normal;
}

code {
  padding: 3px 6px;
  color: #f7d58b;
  background: rgba(0, 8, 18, 0.74);
  border: 1px solid rgba(71, 104, 106, 0.34);
  border-radius: 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.method-card code,
.doc-topic > code,
.visual-docs code {
  display: inline-block;
  margin: 2px 0 7px;
}

.doc-topic {
  margin-top: 14px;
  padding: 17px;
  background: rgba(2, 18, 31, 0.58);
  border: 1px solid rgba(45, 92, 97, 0.35);
  border-radius: 11px;
}

.doc-topic h4 {
  margin: 0 0 9px;
  color: var(--cyan);
  font-size: 17px;
}

.parameter-table {
  margin-top: 11px;
  display: grid;
  gap: 7px;
}

.parameter-table > div {
  padding: 10px 11px;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 4px 12px;
  align-items: start;
  background: rgba(4, 25, 37, 0.7);
  border: 1px solid rgba(48, 97, 99, 0.32);
  border-radius: 8px;
}

.parameter-table b {
  color: #c8f3ed;
  font-size: 12px;
}

.parameter-table span {
  color: #82a8a7;
  font-size: 12px;
  line-height: 1.55;
}

.parameter-table code {
  grid-column: 2;
  justify-self: start;
}

.callout {
  margin: 12px 0 0;
  padding: 11px 13px;
  color: #93bbb5;
  background: rgba(6, 42, 43, 0.48);
  border-left: 3px solid var(--teal);
  border-radius: 7px;
  font-size: 12px;
  line-height: 1.65;
}

.callout b {
  color: #d4f8f1;
}

.callout.warning {
  background: rgba(75, 51, 6, 0.25);
  border-left-color: #eab857;
}

.formula-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.safety-list {
  margin: 12px 0 0;
  padding-left: 22px;
  color: #8db2b1;
  font-size: 13px;
  line-height: 1.75;
}

.safety-list li::marker {
  color: var(--teal);
}

.recipe-grid ol {
  margin: 8px 0 0;
  padding-left: 20px;
}

@media (max-width: 980px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }
  .docs-toc {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .docs-toc strong {
    grid-column: 1 / -1;
  }
  .method-grid.three {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .workflow-grid,
  .method-grid,
  .visual-docs,
  .recipe-grid {
    grid-template-columns: 1fr;
  }
  .docs-toc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .parameter-table > div {
    grid-template-columns: 1fr;
  }
  .parameter-table code {
    grid-column: 1;
  }
}