@import url("https://fonts.googleapis.com/css?family=Open+Sans:400,700");

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding-top: 100px;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 18px;
  color: #222222;
  background: #fcfbfd;
}

a {
  color: #1b5e87;
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

a:hover {
  color: #0f4565;
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #0b63a5;
  outline-offset: 2px;
}

img {
  max-width: 100%;
  vertical-align: middle;
  border: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: inherit;
  font-weight: 700;
  color: inherit;
  text-rendering: optimizelegibility;
}

h1 {
  font-size: 30px;
  line-height: 36px;
}

h2 {
  font-size: 24px;
  line-height: 36px;
}

h3 {
  font-size: 18px;
  line-height: 27px;
}

p {
  margin: 0 0 9px;
}

hr {
  margin: 18px 0;
  border: 0;
  border-top: 1px solid #eeeeee;
  border-bottom: 1px solid #ffffff;
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1030;
}

.site-header__inner {
  min-height: 70px;
  padding: 0 20px;
  display: flex;
  align-items: stretch;
  background: #fcfbfd;
  border-top: 1px solid #e5e5e5;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25), inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

.site-brand {
  display: flex;
  align-items: center;
  padding: 10px;
  flex: 0 0 auto;
  text-decoration: none;
}

.site-brand:hover {
  background-color: #ffffff;
  text-decoration: none;
}

.site-brand img {
  height: 70px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: stretch;
  margin-left: 40px;
}

.site-nav a {
  display: flex;
  align-items: center;
  min-height: 70px;
  padding: 24px 10px 26px;
  line-height: 19px;
  color: #222222;
  text-decoration: none;
  text-shadow: none;
}

.site-nav a:hover,
.site-nav a.is-active,
.site-nav a[aria-current="page"] {
  background-color: #eeeeee;
  color: #222222;
  text-decoration: none;
}

.site-main {
  padding-top: 20px;
}

.site-main:focus {
  outline: none;
}

.page-shell,
.site-footer__inner {
  width: 940px;
  max-width: calc(100vw - 40px);
  margin: 0 auto;
}

.page-panel {
  min-height: 400px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.page-header {
  margin: 0;
  padding: 0;
  border: 0;
}

.page-header--home {
  margin-bottom: 0;
}

.eyebrow {
  display: none;
}

.page-title {
  margin: 0;
  font-size: 24px;
  line-height: 36px;
  font-weight: 700;
  letter-spacing: 0;
}

.page-description,
.page-note,
.page-subtitle,
.resource-summary,
.subject-list,
.book-authors {
  font-size: 14px;
  line-height: 21px;
  color: #222222;
}

.page-description {
  margin-top: 18px;
  max-width: none;
}

.page-note,
.page-subtitle {
  margin-top: 9px;
}

.breadcrumbs {
  display: block;
  margin: 0 0 18px;
  font-size: 12px;
  line-height: 18px;
  color: #555555;
}

.breadcrumbs a {
  color: #1b5e87;
}

.breadcrumbs span {
  margin: 0 2px;
}

.resource-list,
.book-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.resource-divider {
  margin: 0;
  padding: 0;
}

.resource-title {
  margin: 0 0 9px;
  font-size: 18px;
  line-height: 27px;
  font-weight: 700;
}

.resource-title a {
  text-decoration: underline;
  color: #222222;
}

.resource-summary {
  margin-bottom: 0;
}

.book-item {
  padding: 9px 0;
  border-bottom: 1px solid #eeeeee;
}

.book-item:first-child {
  padding-top: 0;
}

.book-title-link {
  display: block;
  color: #222222;
  font-weight: 700;
  text-decoration: underline;
}

.book-title-link:hover {
  color: #888888;
}

.book-authors {
  display: block;
  margin-top: 4px;
  color: #555555;
}

.book-pubinfo {
  display: block;
  margin-top: 2px;
  color: #555555;
  font-size: 13px;
}

.content-stack > * + * {
  margin-top: 18px;
}

.error-page {
  max-width: 48rem;
}

.error-page__code {
  margin: 0;
  font-size: 12px;
  line-height: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #555555;
  text-transform: uppercase;
}

.error-page__guidance {
  margin: 0 0 0 25px;
  padding: 0;
}

.error-page__message p:last-child {
  margin-bottom: 0;
}

.error-page__guidance li + li {
  margin-top: 4px;
}

.error-page__actions {
  margin-top: 18px;
}

.meta-grid {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 9px 10px;
  margin: 0;
}

.meta-grid dt {
  margin: 0;
  font-weight: 700;
  color: #222222;
}

.meta-grid dd {
  margin: 0;
  color: #222222;
}

[hidden] {
  display: none !important;
}

.authors-block {
  display: inline;
}

.authors-list {
  display: inline;
  list-style: none;
  padding: 0;
  margin: 0;
}

.authors-list > li {
  display: inline;
}

.authors-tail {
  display: inline;
}

.author-toggle {
  display: inline;
  margin-left: 4px;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: #003366;
  text-decoration: underline;
  cursor: pointer;
}

.author-toggle:focus-visible {
  outline: 2px solid #003366;
  outline-offset: 2px;
}

.terms-of-use {
  margin: 18px 0;
  padding: 12px 16px;
  background: #fcf8e3;
  border: 1px solid #efd6a8;
  border-radius: 4px;
  font-size: 13px;
  color: #660000;
}

.terms-of-use h2 {
  margin: 0 0 9px;
  font-size: 14px;
  line-height: 18px;
  font-weight: 700;
  color: #660000;
}

.terms-of-use p {
  margin: 0 0 9px;
}

.terms-of-use ul {
  margin: 0 0 0 25px;
  padding: 0;
}

.terms-of-use li + li {
  margin-top: 4px;
}

.accessibility-notice {
  margin: 18px 0;
  padding: 12px 16px;
  background: #eef7fb;
  border: 1px solid #b9d7e6;
  border-radius: 4px;
  font-size: 13px;
  color: #12394a;
}

.accessibility-notice h2 {
  margin: 0 0 9px;
  font-size: 14px;
  line-height: 18px;
  font-weight: 700;
  color: #12394a;
}

.accessibility-notice p {
  margin: 0;
}

.accessibility-notice a {
  color: #004b73;
}

.pdf-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.pdf-button {
  display: inline-block;
  padding: 6px 12px;
  color: #ffffff;
  text-decoration: none;
  background: #006dcc;
  border: 1px solid #0044cc;
  border-radius: 4px;
}

.pdf-button:hover {
  color: #ffffff;
  background: #0044cc;
  text-decoration: none;
}

.detail-card {
  margin-top: 18px;
}

.section-title {
  margin: 0 0 9px;
  font-size: 18px;
  line-height: 27px;
  font-weight: 700;
}

.toc-list {
  margin: 0 0 9px 25px;
  padding: 0;
}

.toc-list li {
  line-height: 18px;
}

.site-footer {
  margin-top: 24px;
  padding: 16px 0 28px;
  border-top: 1px solid #eeeeee;
}

.site-footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px 32px;
  flex-wrap: wrap;
  font-size: 14px;
  line-height: 22px;
  color: #222222;
}

.site-footer__legal,
.site-footer__copyright {
  font-size: 14px;
}

.site-footer__legal p,
.site-footer__copyright p {
  margin: 0;
}

.site-footer__legal p + p,
.site-footer__copyright p + p {
  margin-top: 2px;
}

.site-footer__legal {
  min-width: 12rem;
}

.site-footer__copyright {
  margin-left: auto;
  color: #555555;
  text-align: right;
}

.site-footer__copyright a {
  font-weight: 700;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 2000;
  padding: 8px 12px;
  background: #ffffff;
  border: 2px solid #0b63a5;
  color: #0b63a5;
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
}

@media (max-width: 767px) {
  body {
    padding-top: 0;
  }

  .site-header {
    position: static;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 12px 12px;
  }

  .site-brand {
    padding-left: 0;
  }

  .site-nav {
    margin-left: 0;
    flex-wrap: wrap;
  }

  .site-nav a {
    min-height: auto;
    padding: 12px 14px 10px 0;
  }

  .site-main {
    padding-top: 12px;
  }

  .page-shell,
  .site-footer__inner {
    width: auto;
    max-width: none;
    margin: 0 12px;
  }

  .meta-grid {
    grid-template-columns: 1fr;
    gap: 4px 0;
  }

  .site-footer__copyright {
    text-align: left;
    margin-left: 0;
  }
}