.content-main {
  background: var(--paper);
}

.content-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 88px 24px 72px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 80px;
  align-items: end;
}

.breadcrumb {
  margin: 0 0 34px;
  color: var(--gray);
  font: 500 11px var(--mono);
  letter-spacing: .08em;
}

.breadcrumb a {
  text-underline-offset: 3px;
}

.content-label {
  margin: 0 0 18px;
  font: 600 12px var(--mono);
  letter-spacing: .14em;
}

.content-hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(52px, 7vw, 88px);
  line-height: .98;
  letter-spacing: -.055em;
}

.content-summary {
  max-width: 730px;
  margin: 28px 0 0;
  color: var(--gray);
  font-size: 21px;
  font-weight: 300;
  line-height: 1.5;
}

.content-meta {
  padding: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font: 400 11px/1.7 var(--mono);
  color: var(--gray);
}

.content-meta b {
  display: block;
  color: var(--ink);
  font-size: 12px;
}

.quick-answer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 38px 44px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  background: var(--black);
  color: var(--white);
}

.quick-answer b {
  font: 600 11px var(--mono);
  letter-spacing: .12em;
}

.quick-answer p {
  max-width: 760px;
  margin: 0;
  color: #d2d2d7;
  font-size: 18px;
  line-height: 1.6;
}

.article-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 90px 24px 130px;
  display: grid;
  grid-template-columns: 220px minmax(0, 720px);
  gap: 80px;
}

.toc {
  align-self: start;
  position: sticky;
  top: 92px;
}

.toc b {
  display: block;
  margin-bottom: 18px;
  font: 600 10px var(--mono);
  letter-spacing: .12em;
}

.toc a {
  margin: 0 0 13px;
  display: block;
  color: var(--gray);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
}

.toc a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-body h2 {
  margin: 76px 0 18px;
  font-size: 38px;
  line-height: 1.1;
  letter-spacing: -.035em;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  margin: 36px 0 12px;
  font-size: 23px;
}

.article-body p,
.article-body li {
  color: #515154;
  font-size: 17px;
  line-height: 1.75;
}

.article-body strong {
  color: var(--ink);
}

.article-body ul,
.article-body ol {
  padding-left: 24px;
}

.article-body li + li {
  margin-top: 10px;
}

.article-body a {
  text-underline-offset: 4px;
}

.fact-box,
.note-box {
  margin: 34px 0;
  padding: 24px 26px;
  border-left: 3px solid var(--ink);
  background: var(--white);
}

.fact-box b,
.note-box b {
  display: block;
  margin-bottom: 8px;
  font: 600 11px var(--mono);
  letter-spacing: .1em;
}

.fact-box p,
.note-box p {
  margin: 0;
  font-size: 15px;
}

.data-table-wrap {
  margin: 30px 0;
  overflow-x: auto;
  border-top: 1px solid var(--ink);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

.data-table th,
.data-table td {
  padding: 16px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
  line-height: 1.5;
}

.data-table th {
  font: 600 10px var(--mono);
  letter-spacing: .08em;
}

.data-table td:first-child {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
}

.code-sample {
  margin: 30px 0;
  padding: 24px;
  overflow-x: auto;
  color: #f5f5f7;
  background: var(--black);
  font: 400 12px/1.8 var(--mono);
}

.step-list {
  margin: 35px 0;
  padding: 0;
  list-style: none;
  counter-reset: guide-step;
  border-top: 1px solid var(--line);
}

.step-list li {
  padding: 28px 0;
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  counter-increment: guide-step;
}

.step-list li::before {
  content: "0" counter(guide-step);
  color: var(--gray);
  font: 500 11px var(--mono);
}

.step-list h3 {
  margin: 0 0 8px;
}

.step-list p {
  margin: 0;
}

.resource-section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 24px 120px;
}

.resource-section > h2 {
  margin: 74px 0 30px;
  font-size: 34px;
  letter-spacing: -.03em;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.resource-card {
  min-height: 280px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: var(--white);
  text-decoration: none;
}

.resource-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.resource-card small {
  font: 600 10px var(--mono);
  letter-spacing: .1em;
  color: var(--gray);
}

.resource-card h2,
.resource-card h3 {
  margin: 22px 0 12px;
  font-size: 30px;
  line-height: 1.08;
  letter-spacing: -.03em;
}

.resource-card p {
  margin: 0 0 28px;
  color: var(--gray);
  font-size: 15px;
  line-height: 1.55;
}

.resource-card span {
  margin-top: auto;
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.content-cta {
  padding: 90px 24px;
  text-align: center;
  color: var(--white);
  background: var(--black);
}

.content-cta h2 {
  max-width: 760px;
  margin: 0 auto 18px;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.02;
  letter-spacing: -.045em;
}

.content-cta p {
  max-width: 620px;
  margin: 0 auto 30px;
  color: #a1a1a6;
  font-size: 17px;
  line-height: 1.55;
}

.related-links {
  margin-top: 75px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.related-links b {
  display: block;
  margin-bottom: 18px;
  font: 600 10px var(--mono);
  letter-spacing: .12em;
}

.related-links a {
  display: block;
  margin: 12px 0;
}

@media (max-width: 860px) {
  .content-hero {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .content-meta {
    max-width: 520px;
  }

  .article-shell {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .toc {
    position: static;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  .content-hero {
    padding-top: 62px;
  }

  .content-hero h1 {
    font-size: 48px;
  }

  .content-summary {
    font-size: 19px;
  }

  .quick-answer {
    grid-template-columns: 1fr;
    margin: 0 18px;
    padding: 28px;
  }

  .article-shell {
    padding-top: 62px;
  }

  .article-body h2 {
    font-size: 32px;
  }

  .resource-grid {
    grid-template-columns: 1fr;
  }
}