* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #000;
  color: #a9caec;
  font-family: "Creato Display", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.top-nav {
  align-items: center;
  background: rgba(0, 0, 0, 0.94);
  border-bottom: 1px solid #1a1a2e;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-left,
.nav-right {
  align-items: center;
  display: flex;
  gap: 14px;
}

.logo {
  display: block;
  height: 32px;
  width: auto;
}

.nav-divider {
  color: #374151;
}

.nav-breadcrumb,
.nav-right a {
  color: #8ba8c7;
  font-size: 14px;
}

.nav-breadcrumb a,
.nav-right a:hover {
  color: #22d3ee;
}

.container {
  margin: 0 auto;
  max-width: 900px;
  padding: 52px 28px 80px;
}

.back-link {
  color: #8ba8c7;
  display: inline-block;
  margin-bottom: 28px;
}

.back-link:hover {
  color: #22d3ee;
}

.tag {
  background: rgba(34, 211, 238, 0.1);
  border-radius: 5px;
  color: #22d3ee;
  display: inline-block;
  font-size: 13px;
  margin-bottom: 18px;
  padding: 5px 11px;
}

.article-header h1 {
  color: #fff;
  font-size: 48px;
  font-weight: 500;
  line-height: 1.22;
  margin-bottom: 18px;
}

.subtitle {
  color: #a9caec;
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 760px;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 44px;
}

.article-hero-image {
  border-radius: 8px;
  display: block;
  height: auto;
  margin: 0 0 38px;
  width: 100%;
}

.button {
  border: 1px solid #374151;
  border-radius: 7px;
  color: #d1d5db;
  display: inline-flex;
  font-size: 14px;
  padding: 11px 22px;
}

.button.primary {
  background: #22d3ee;
  border-color: #22d3ee;
  color: #000;
  font-weight: 600;
}

article h2 {
  border-bottom: 1px solid #2a3b4d;
  color: #fff;
  font-size: 27px;
  font-weight: 500;
  margin-top: 42px;
  padding-bottom: 10px;
}

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

article h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 500;
  margin-top: 28px;
}

article p {
  color: #a9caec;
  font-size: 16px;
  line-height: 1.95;
  margin-top: 14px;
  overflow-wrap: anywhere;
}

article ul,
article ol {
  margin: 14px 0 0 24px;
}

article li {
  color: #a9caec;
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 7px;
  overflow-wrap: anywhere;
  padding-left: 4px;
}

article strong {
  color: #dcecff;
}

article p a,
article li a {
  color: #22d3ee;
  text-decoration: underline;
  text-decoration-color: rgba(34, 211, 238, 0.45);
  text-underline-offset: 3px;
}

article p a:hover,
article li a:hover {
  text-decoration-color: #22d3ee;
}

article table {
  border-collapse: collapse;
  display: block;
  margin-top: 20px;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  width: 100%;
}

article th,
article td {
  border: 1px solid #2a3b4d;
  color: #a9caec;
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

article th {
  background: #101827;
  color: #fff;
  font-weight: 500;
}

.callout {
  background: rgba(34, 211, 238, 0.06);
  border-left: 3px solid #22d3ee;
  margin-top: 26px;
  padding: 18px 20px;
}

.callout p {
  margin: 0;
}

.related-resources {
  border-top: 1px solid #2a3b4d;
  margin-top: 46px;
  padding-top: 28px;
}

.related-resources h2 {
  border: 0;
  font-size: 24px;
  margin: 0 0 16px;
  padding: 0;
}

.related-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.related-card {
  background: rgba(14, 26, 43, 0.72);
  border: 1px solid #1f2937;
  border-radius: 8px;
  display: block;
  min-width: 0;
  padding: 16px;
}

.related-card strong {
  color: #fff;
  display: block;
  font-size: 16px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.related-card span {
  color: #8ba8c7;
  display: block;
  font-size: 13px;
  line-height: 1.65;
  margin-top: 8px;
  overflow-wrap: anywhere;
}

.related-card:hover {
  border-color: rgba(34, 211, 238, 0.55);
}

.checklist {
  list-style: none;
  margin-left: 0;
}

.checklist li {
  border-bottom: 1px solid #1f2937;
  padding: 11px 0;
}

.checklist li::before {
  color: #22d3ee;
  content: "□";
  margin-right: 10px;
}

.cta-section {
  background: #0e1a2b;
  border: 1px solid #1f2937;
  border-radius: 8px;
  margin-top: 60px;
  padding: 38px;
  text-align: center;
}

.cta-section h2 {
  border: 0;
  font-size: 28px;
  margin: 0 0 10px;
  padding: 0;
}

.cta-section p {
  margin: 0;
}

.cta-button {
  background: #22d3ee;
  border-radius: 5px;
  color: #000;
  display: inline-block;
  font-weight: 600;
  margin-top: 20px;
  max-width: 100%;
  overflow-wrap: anywhere;
  padding: 13px 28px;
}

footer {
  border-top: 1px solid #2a3b4d;
  color: #8ba8c7;
  margin-top: 44px;
  padding: 28px 20px;
  text-align: center;
}

@media (max-width: 700px) {
  .top-nav {
    align-items: flex-start;
    gap: 14px;
    padding: 14px 18px;
  }

  .nav-divider,
  .nav-breadcrumb,
  .nav-right a:first-child {
    display: none;
  }

  .nav-right {
    gap: 10px;
  }

  .container {
    padding: 38px 20px 60px;
  }

  .article-header h1 {
    font-size: 34px;
  }

  .subtitle {
    font-size: 16px;
  }

  .cta-section {
    padding: 28px 20px;
  }

  .article-actions .button,
  .cta-button {
    justify-content: center;
    text-align: center;
    width: 100%;
  }

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