/* One header, footer, font and palette for every ProfessorWeb material page. */
@font-face {
  font-family: "ProfessorWeb Open Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/OpenSans-Regular.ttf") format("truetype");
}
@font-face {
  font-family: "ProfessorWeb Open Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/OpenSans-Bold.ttf") format("truetype");
}
.site-chrome {
  --catalog-accent: #6c43af;
  --catalog-accent-dark: #7e4ecc;
  --catalog-link: #46d96f;
  --catalog-link-hover: #83eba0;
  --catalog-background: #1f202a;
  --catalog-surface: #252631;
  --catalog-ink: #e4e4e4;
  --catalog-muted: #b7b9c9;
  --catalog-line: #3b3c4c;
  --catalog-soft: #2d2e3b;
  --catalog-radius: 6px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
  margin: 0;
  padding-bottom: 0;
}
.site-chrome .site-header,
.site-chrome .site-footer {
  flex-shrink: 0;
  width: 100%;
  margin: 0;
  color: var(--catalog-ink);
  font-family: "ProfessorWeb Open Sans", "OpenSansRegular", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-align: left;
  -webkit-text-size-adjust: 100%;
}
.site-chrome .site-header *,
.site-chrome .site-header *::before,
.site-chrome .site-header *::after,
.site-chrome .site-footer *,
.site-chrome .site-footer *::before,
.site-chrome .site-footer *::after,
.site-chrome .site-skip { box-sizing: border-box; }
.site-chrome .site-header a,
.site-chrome .site-footer a { font-family: inherit; text-transform: none; text-underline-offset: .18em; }
.site-chrome .site-footer a { color: var(--catalog-link); }
.site-chrome .site-header a:hover,
.site-chrome .site-footer a:hover { color: var(--catalog-link-hover); }
.site-chrome .site-footer p { text-indent: 0; }
.site-chrome .site-header :focus-visible,
.site-chrome .site-footer :focus-visible,
.site-chrome .site-skip:focus-visible {
  outline: 3px solid var(--catalog-link);
  outline-offset: 4px;
  border-radius: 3px;
}
.site-chrome > main { width: 100%; min-width: 0; flex-shrink: 0; }
.site-chrome > .site-footer { margin-top: auto; }
.site-chrome .legacy-main { min-height: 0; }
.site-chrome .legacy-main:focus { outline: none; }
.site-chrome .legacy-main > #content { padding-top: 36px; padding-bottom: 48px; }

.site-chrome .site-skip {
  position: absolute;
  z-index: 20;
  top: 12px;
  left: 16px;
  padding: 9px 16px;
  color: #fff;
  background: var(--catalog-accent-dark);
  border-radius: 6px;
  transform: translateY(-160%);
}
.site-chrome .site-skip:focus { transform: translateY(0); }

.site-chrome .catalog-header {
  border-bottom: 1px solid var(--catalog-line);
  background: var(--catalog-surface);
}
.site-chrome .catalog-header-inner {
  max-width: 1224px;
  min-height: 68px;
  margin: 0 auto;
  padding: 12px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-chrome .catalog-brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 12px;
  color: var(--catalog-ink);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.2px;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}
.site-chrome .site-header .catalog-brand-icon {
  display: block;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  max-width: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  object-fit: contain;
}
.site-chrome .site-header .catalog-brand-name { display: block; font: inherit; letter-spacing: inherit; }
.site-chrome .catalog-navigation {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: 14px;
  line-height: 1.4;
}
.site-chrome .catalog-navigation > a,
.site-chrome .catalog-menu > summary {
  display: block;
  padding: 11px 13px;
  color: var(--catalog-ink);
  border-radius: 8px;
  font-weight: 550;
  text-decoration: none;
}
.site-chrome .catalog-navigation > a:hover,
.site-chrome .catalog-navigation > a[aria-current="page"],
.site-chrome .catalog-menu > summary:hover,
.site-chrome .catalog-menu[open] > summary {
  color: #fff;
  background: var(--catalog-accent);
}
.site-chrome .catalog-menu { position: relative; }
.site-chrome .catalog-menu > summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
}
.site-chrome .catalog-menu > summary::-webkit-details-marker { display: none; }
.site-chrome .catalog-menu > summary::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 0 3px 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
}
.site-chrome .catalog-menu[open] > summary::after { transform: rotate(225deg); margin-bottom: 0; }
.site-chrome .catalog-menu-grid {
  position: absolute;
  z-index: 10;
  top: calc(100% + 12px);
  right: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  width: min(660px, calc(100vw - 48px));
  padding: 16px;
  background: var(--catalog-surface);
  border: 1px solid var(--catalog-line);
  border-radius: var(--catalog-radius);
  box-shadow: 0 14px 40px #0005;
}
.site-chrome .catalog-menu-link {
  padding: 10px 12px;
  color: var(--catalog-ink);
  border-radius: 7px;
  text-decoration: none;
}
.site-chrome .catalog-menu-link:hover,
.site-chrome .catalog-menu-link[aria-current] { background: var(--catalog-accent); color: #fff; }

.site-chrome .catalog-footer { background: #16171e; border-top: 1px solid var(--catalog-line); }
.site-chrome .catalog-footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 28px 48px;
  max-width: 1224px;
  margin: 0 auto;
  padding: 36px 32px;
}
.site-chrome .site-footer .catalog-footer-brand { color: var(--catalog-ink); font-size: 19px; font-weight: 700; text-decoration: none; }
.site-chrome .catalog-footer p { margin: 10px 0 0; color: var(--catalog-muted); font-size: 14px; line-height: 1.6; }
.site-chrome .catalog-footer nav { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 14px 26px; padding-top: 6px; }
.site-chrome .catalog-footer nav a { font-size: 14px; text-decoration: none; }
.site-chrome .catalog-footer nav a:hover { text-decoration: underline; }

@media (max-width: 820px) {
  .site-chrome .catalog-header-inner { flex-wrap: wrap; gap: 16px; }
  .site-chrome .catalog-navigation { width: 100%; gap: 4px; position: relative; }
  .site-chrome .catalog-navigation > a,
  .site-chrome .catalog-menu > summary { padding: 10px; }
  .site-chrome .catalog-menu { position: static; }
  .site-chrome .catalog-menu-grid { top: calc(100% + 12px); left: 0; right: auto; width: min(660px, calc(100vw - 64px)); }
}
@media (max-width: 540px) {
  .site-chrome .catalog-header-inner { padding: 18px 20px; }
  .site-chrome .catalog-brand { font-size: 21px; }
  .site-chrome .catalog-navigation { font-size: 13px; }
  .site-chrome .catalog-navigation > a,
  .site-chrome .catalog-menu > summary { padding: 10px 8px; }
  .site-chrome .catalog-menu-grid { grid-template-columns: minmax(0, 1fr); width: calc(100vw - 40px); max-height: 65vh; overflow-y: auto; }
  .site-chrome .catalog-footer-inner { padding: 28px 20px; }
  .site-chrome .catalog-footer nav { flex-direction: column; gap: 12px; }
  .site-chrome .legacy-main > #content { padding-top: 28px; }
}
@media print {
  .site-chrome { display: block; min-height: 0; }
  .site-chrome .site-header,
  .site-chrome .site-footer,
  .site-chrome .site-skip { display: none; }
}