.article-page {
  background: var(--paper-bright);
}

@media (min-width: 921px) {
  .article-page .site-header:not(.is-scrolled) {
    color: var(--white);
  }
}

.article-hero {
  position: relative;
  min-height: 74svh;
  padding: calc(var(--header-height) + clamp(72px, 9vw, 150px)) var(--pad) clamp(76px, 9vw, 130px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--night);
  color: var(--white);
}

.article-hero-grid {
  position: absolute;
  inset: 0;
  opacity: .22;
  background-image:
    linear-gradient(rgba(158, 244, 255, .2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(158, 244, 255, .2) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(to right, transparent 2%, #000 48%, #000 100%);
}

.article-hero::after {
  content: "";
  position: absolute;
  width: min(58vw, 880px);
  aspect-ratio: 1;
  right: -18vw;
  bottom: -65%;
  border: 1px solid rgba(158, 244, 255, .35);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(158, 244, 255, .035), 0 0 0 180px rgba(158, 244, 255, .025);
}

.article-hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.article-kicker {
  margin: 0 0 34px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.article-hero h1 {
  max-width: 1120px;
  margin: 0;
  font-size: clamp(48px, 7.2vw, 118px);
  font-weight: 420;
  line-height: .96;
  letter-spacing: -.05em;
  text-wrap: balance;
}

.article-lead {
  max-width: 760px;
  margin: 42px 0 0;
  color: rgba(255, 255, 255, .74);
  font-size: clamp(18px, 1.5vw, 23px);
  line-height: 1.55;
}

.article-start {
  display: inline-block;
  margin-top: 44px;
  border-bottom-color: rgba(255, 255, 255, .72);
}

.article-layout {
  width: min(var(--max), 100%);
  margin: 0 auto;
  padding: clamp(80px, 10vw, 160px) var(--pad) clamp(100px, 12vw, 180px);
  display: grid;
  grid-template-columns: minmax(210px, .32fr) minmax(0, .9fr);
  align-items: start;
  gap: clamp(54px, 8vw, 140px);
}

.article-toc {
  position: sticky;
  top: 108px;
  padding-top: 18px;
  border-top: 1px solid var(--ink);
}

.article-toc > p {
  margin: 0 0 24px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.article-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: article-section;
}

.article-toc li {
  counter-increment: article-section;
  display: grid;
  grid-template-columns: 25px 1fr;
  gap: 10px;
  margin: 0 0 15px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.38;
  transition: color .2s ease;
}

.article-toc li::before {
  content: counter(article-section, decimal-leading-zero);
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.article-toc a {
  transition: color .2s ease, font-weight .2s ease;
}

.article-toc a:hover {
  color: var(--ink);
}

.article-toc li.is-active::before {
  color: var(--blue-deep);
  font-weight: 800;
}

.article-toc li.is-active a {
  color: var(--blue-deep);
  font-weight: 750;
}

.article-content {
  min-width: 0;
  max-width: 900px;
}

.article-content h2 {
  margin: clamp(86px, 10vw, 140px) 0 34px;
  padding-top: 28px;
  border-top: 1px solid var(--ink);
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 470;
  line-height: 1.08;
  letter-spacing: -.035em;
  text-wrap: balance;
}

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

.article-content h3 {
  margin: clamp(62px, 7vw, 94px) 0 25px;
  color: var(--blue-deep);
  font-size: clamp(25px, 2.7vw, 38px);
  font-weight: 540;
  line-height: 1.18;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.article-content p,
.article-list {
  margin: 0 0 25px;
  color: #33393c;
  font-size: clamp(17px, 1.22vw, 20px);
  line-height: 1.78;
}

.article-list {
  padding: 0;
  list-style: none;
}

.article-list li {
  position: relative;
  padding: 18px 0 18px 34px;
  border-bottom: 1px solid var(--line);
}

.article-list li:first-child {
  border-top: 1px solid var(--line);
}

.article-list li::before {
  content: "";
  position: absolute;
  top: 31px;
  left: 3px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--blue);
  transform: rotate(45deg);
}

.article-return-wrap {
  margin-top: clamp(90px, 11vw, 150px);
  padding: clamp(36px, 6vw, 68px);
  background: #dbe5ff;
}

.article-return-wrap p {
  max-width: 590px;
  margin-bottom: 34px;
  color: var(--ink);
  font-size: clamp(24px, 3vw, 39px);
  font-weight: 480;
  line-height: 1.2;
  letter-spacing: -.025em;
}

.article-return {
  gap: 24px;
  min-width: min(100%, 330px);
  font-size: clamp(18px, 1.2vw, 21px);
  font-weight: 700;
  line-height: 1.25;
}

.article-return span {
  font-size: 1.1em;
}

@media (max-width: 920px) {
  .article-hero {
    min-height: auto;
    padding-top: 150px;
  }

  .article-hero::after {
    right: -30vw;
    bottom: -34%;
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 64px;
  }

  .article-toc {
    position: static;
    columns: 2;
    column-gap: 36px;
  }

  .article-toc > p {
    column-span: all;
  }

  .article-toc li {
    break-inside: avoid;
  }
}

@media (max-width: 620px) {
  .article-hero {
    padding-top: 128px;
  }

  .article-hero-grid {
    background-size: 64px 64px;
  }

  .article-kicker {
    margin-bottom: 25px;
  }

  .article-hero h1 {
    font-size: clamp(38px, 10vw, 58px);
    hyphens: auto;
    overflow-wrap: break-word;
  }

  .article-lead {
    margin-top: 30px;
  }

  .article-toc {
    columns: 1;
  }

  .article-content h2 {
    margin-top: 82px;
  }

  .article-content h3 {
    margin-top: 56px;
  }

  .article-list li {
    padding-left: 29px;
  }

  .article-return-wrap {
    margin-right: calc(var(--pad) * -1);
    margin-left: calc(var(--pad) * -1);
  }

  .article-return {
    width: 100%;
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-toc li,
  .article-toc a {
    transition: none;
  }
}