:root {
  color-scheme: light;
  --ink: #202020;
  --muted: #595959;
  --link: #205aa1;
  --line: #ddd;
  --code: #f5f5f5;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 1rem; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--link); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible, video:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 4px;
}
.wrap { width: min(1040px, calc(100% - 64px)); margin: auto; }
.skip {
  position: absolute;
  top: -100px;
  left: 16px;
  padding: 10px 16px;
  background: #fff;
  z-index: 2;
}
.skip:focus { top: 12px; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.brand {
  color: var(--ink);
  font: 600 15px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-decoration: none;
}
nav { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; }
.intro { max-width: 760px; padding: 36px 0 26px; }
h1 {
  margin: 0 0 16px;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.02em;
}
.intro p { margin: 0; font-size: 18px; }

figure { margin: 0; }
video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  background: #151515;
  border: 1px solid var(--line);
}
figcaption { max-width: 760px; padding-top: 14px; font-size: 16px; }
figcaption p { margin: 0 0 10px; }
.demo-links { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 16px 0; font-size: 14px; }
details {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
summary { cursor: pointer; }
details p, details ol { max-width: 760px; margin: 14px 0 0; }
details ol { padding-left: 24px; }
details li { padding: 3px 0; }

.fortran { padding-top: 36px; }
.fortran h2 { margin-top: 0; }
.fortran > p { max-width: 760px; margin: 0 0 16px; }

.guide { max-width: 760px; padding: 36px 0 32px; }
h2 { margin: 30px 0 14px; font-size: 22px; font-weight: 600; line-height: 1.35; }
.guide h2:first-child { margin-top: 0; }
.guide p { margin: 0 0 16px; }
code {
  padding: .08em .2em;
  background: var(--code);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .88em;
  overflow-wrap: anywhere;
}
pre {
  max-width: 100%;
  overflow-x: auto;
  margin: 16px 0 20px;
  padding: 14px 16px;
  border: 1px solid #e5e5e5;
  background: var(--code);
  font: 14px/1.65 ui-monospace, SFMono-Regular, Consolas, monospace;
}
pre code { padding: 0; font-size: inherit; overflow-wrap: normal; }
footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 20px 0 30px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
footer p { margin: 0; }

@media (max-width: 600px) {
  .wrap { width: calc(100% - 32px); }
  header { flex-direction: column; align-items: flex-start; gap: 12px; padding: 18px 0; }
  .intro { padding: 28px 0 22px; }
  .intro p { font-size: 17px; }
  .guide { padding-top: 28px; }
}