body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, rgba(103, 232, 249, .08), transparent 26rem),
    radial-gradient(circle at 94% 18%, rgba(255, 111, 189, .07), transparent 24rem),
    #070a12;
}

.content-hero {
  padding: clamp(3rem, 8vw, 6rem) 0 2rem;
  background:
    radial-gradient(circle at 12% 16%, rgba(83, 224, 242, .14), transparent 28rem),
    radial-gradient(circle at 88% 22%, rgba(255, 120, 191, .11), transparent 24rem);
  border-bottom: 1px solid rgba(151, 180, 217, .12);
}

.content-hero .shell,
.content-shell {
  width: min(1100px, calc(100% - 2rem));
  margin-inline: auto;
}

.content-hero h1 {
  max-width: 850px;
  margin: .8rem 0 1rem;
  font-size: clamp(2.3rem, 7vw, 5rem);
  line-height: .98;
  color: #f7fbff;
}

.content-hero .lead {
  max-width: 780px;
  color: #dbe7f7;
}

.content-hero p:not(.lead) {
  color: #b8c5d8;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2rem;
  align-items: start;
  padding-block: 2rem 5rem;
}

.article-card,
.toc-card,
.policy-note {
  border: 1px solid rgba(151, 180, 217, .25);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(18, 29, 48, .98), rgba(10, 17, 30, .98));
  box-shadow: 0 18px 60px rgba(0, 0, 0, .2);
}

.article-card {
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.article-card section + section {
  margin-top: 2.4rem;
  padding-top: 2.4rem;
  border-top: 1px solid rgba(151, 180, 217, .14);
}

.article-card h2 {
  margin: 0 0 .8rem;
  font-size: clamp(1.55rem, 4vw, 2.2rem);
  color: #f7fbff;
}

.article-card h3 {
  margin: 1.4rem 0 .55rem;
  color: #78e9f7;
}

.article-card p,
.article-card li {
  color: #d5def0;
  line-height: 1.75;
}

.article-card ul,
.article-card ol {
  padding-left: 1.25rem;
}

.toc-card {
  position: sticky;
  top: 96px;
  padding: 1.25rem;
}

.toc-card strong {
  display: block;
  margin-bottom: .8rem;
  color: #f7fbff;
}

.toc-card a,
.footer-links a {
  color: #8feefa;
  text-decoration: none;
}

.toc-card a {
  display: block;
  padding: .45rem 0;
}

.toc-card a:hover,
.toc-card a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  text-decoration: underline;
}

.policy-note {
  margin: 1rem 0;
  padding: 1rem 1.1rem;
  border-left: 4px solid #ffd166;
  color: #eef5ff;
  background: linear-gradient(135deg, rgba(255, 209, 102, .13), rgba(18, 29, 48, .98));
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem 1rem;
  margin-top: .7rem;
}

@media (max-width: 820px) {
  .content-layout {
    grid-template-columns: 1fr;
  }

  .toc-card {
    position: static;
    order: -1;
  }
}