:root {
  color-scheme: light dark;
  --background: #ffffff;
  --text: #17212f;
  --muted: #526071;
  --line: #e2e7ed;
  --accent: #145fc6;
  --notice: #f3f6fa;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 100%;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
}

.container {
  width: min(90%, 65rem);
  margin-inline: auto;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 0.12em;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 1.25rem;
  z-index: 1;
  padding: 0.5rem 1rem;
  transform: translateY(-200%);
  background: var(--background);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 44px;
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 650;
  text-decoration: none;
}

.brand img {
  flex: none;
  border-radius: 0.45rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.25rem;
  color: var(--muted);
  text-decoration: none;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 17ch;
  font-size: clamp(2rem, 6vw, 4.75rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.1;
}

h2 {
  font-size: 1.25rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

p {
  color: var(--muted);
}

.intro {
  padding-block: 5.5rem 5rem;
}

.status {
  margin-bottom: 1.5rem;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
}

.lead {
  max-width: 38rem;
  margin-top: 1.75rem;
  font-size: 1.25rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem 5rem;
  padding-block: 3rem;
  border-block: 1px solid var(--line);
}

.features p,
.reports p {
  margin-top: 0.75rem;
}

.reports {
  max-width: 42rem;
  padding-block: 3rem;
}

.reports .scope {
  margin-top: 1.5rem;
  font-size: 0.95rem;
}

.site-footer {
  padding-block: 1.5rem 2rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
}

.article {
  max-width: 44rem;
  padding-block: 3.5rem 5rem;
}

.article h1 {
  margin-bottom: 2rem;
}

.article section + section {
  margin-top: 2.5rem;
}

.article h2 + p,
.article p + p {
  margin-top: 0.75rem;
}

.article ul {
  margin-block: 1rem;
  padding-inline-start: min(1.25rem, 5vw);
  color: var(--muted);
}

.article li + li {
  margin-top: 0.75rem;
}

.article dl {
  margin-block: 1rem;
}

.article dt {
  margin-top: 1.25rem;
  font-weight: 600;
}

.article dd {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.notice {
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--notice);
}

.questions {
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
}

details {
  padding-block: 1rem;
  border-bottom: 1px solid var(--line);
}

summary {
  min-height: 44px;
  padding-block: 0.5rem;
  font-weight: 600;
  cursor: pointer;
}

details p {
  margin-block: 0.75rem;
}

.support-safety {
  margin-top: 2rem;
  font-size: 0.95rem;
}

@media (max-width: 40rem) {
  .intro {
    padding-block: 3rem;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-block: 2rem;
  }

  .article {
    padding-top: 2rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #10151c;
    --text: #edf2f8;
    --muted: #aab6c6;
    --line: #303b49;
    --accent: #83b7ff;
    --notice: #19222e;
  }
}