:root {
  --ink: #101828;
  --muted: #667085;
  --line: #e0e5ed;
  --indigo: #4f46e5;
  --bg: #f7f8fb;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  padding: 12px max(20px, calc((100vw - 1120px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(224, 229, 237, 0.9);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.wordmark img {
  width: 42px;
  height: 42px;
  max-width: 42px;
  flex: 0 0 42px;
  object-fit: cover;
  border-radius: 11px;
  box-shadow: 0 6px 18px rgba(16, 24, 40, 0.16);
}

.wordmark span {
  display: grid;
  line-height: 1.2;
}

.wordmark b {
  font-size: 15px;
  font-weight: 850;
}

.wordmark small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
}

.topbar nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.topbar nav a {
  padding: 8px 11px;
  border-radius: 9px;
  color: #475467;
  font-size: 11px;
  font-weight: 800;
}

.topbar nav a:hover {
  background: #f1f0ff;
  color: var(--indigo);
}

body > main {
  width: min(820px, calc(100% - 34px));
  margin: 42px auto 72px;
}

body > main .article-hero {
  padding: 38px 40px;
  border-radius: 26px;
}

body > main .article-hero h1 {
  font-size: clamp(36px, 5vw, 54px);
}

body > main .article-hero p {
  font-size: 16px;
}

body > main .article-body {
  margin-top: 22px;
  padding: 38px 42px;
  border-radius: 24px;
}

body > main .article-body h2 {
  margin-top: 34px;
  font-size: 25px;
}

body > main .article-body p,
body > main .article-body li {
  font-size: 15px;
  line-height: 1.75;
}

body > footer {
  padding: 26px max(20px, calc((100vw - 1120px) / 2));
  display: grid;
  grid-template-columns: auto minmax(180px, 1fr) auto;
  align-items: center;
  gap: 20px;
  border-top: 1px solid var(--line);
  background: #fff;
  color: #667085;
}

body > footer .wordmark img {
  width: 38px;
  height: 38px;
  max-width: 38px;
  flex-basis: 38px;
  border-radius: 10px;
}

body > footer p {
  margin: 0;
  font-size: 11px;
  line-height: 1.55;
}

body > footer > div {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

body > footer > div a {
  color: #475467;
  font-size: 11px;
  font-weight: 800;
}

body > footer > small {
  grid-column: 1 / -1;
  width: 100%;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: #98a2b3;
  font-size: 10px;
  text-align: center;
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 14px 18px;
  }

  .topbar nav {
    width: 100%;
    justify-content: flex-start;
  }

  body > main {
    width: min(100% - 28px, 760px);
    margin-top: 28px;
  }

  body > main .article-hero {
    padding: 30px 26px;
  }

  body > main .article-body {
    padding: 30px 26px;
  }

  body > footer {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  body > footer > div {
    justify-content: center;
  }
}

@media (max-width: 500px) {
  .wordmark img {
    width: 38px;
    height: 38px;
    max-width: 38px;
    flex-basis: 38px;
  }

  .wordmark b {
    font-size: 14px;
  }

  .topbar nav a {
    padding: 7px 8px;
    font-size: 10px;
  }

  body > main {
    width: min(100% - 22px, 760px);
  }

  body > main .article-hero {
    padding: 26px 20px;
    border-radius: 21px;
  }

  body > main .article-hero h1 {
    font-size: 34px;
  }

  body > main .article-body {
    padding: 26px 20px;
    border-radius: 20px;
  }

  body > footer {
    padding: 24px 16px;
  }
}