:root {
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: #233047;
  background: #fff;
  font-synthesis: none;
  --ink: #172438;
  --muted: #637085;
  --line: #e5eaf1;
  --blue: #253fe7;
  --rail: #111d30;
  --rail-width: 272px;
  --header: 76px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
}
a {
  color: var(--blue);
  text-underline-offset: 4px;
}
button,
input {
  font: inherit;
}
button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #5a80ff;
  outline-offset: 4px;
}
button {
  color: inherit;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.035em;
}
h1 {
  font-size: clamp(2rem, 3.25vw, 3.3rem);
  font-weight: 650;
  max-width: 900px;
  margin-bottom: 22px;
}
h2 {
  font-size: 1.6rem;
  font-weight: 650;
}
h3 {
  font-size: 1.125rem;
}
p {
  margin-bottom: 20px;
}
img {
  max-width: 100%;
  height: auto;
}
.skip {
  position: fixed;
  top: -100px;
  left: 18px;
  z-index: 30;
  background: white;
  padding: 12px;
}
.skip:focus {
  top: 12px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.topbar {
  height: var(--header);
  position: sticky;
  top: 0;
  z-index: 15;
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  width: calc(var(--rail-width) - 32px);
  flex-shrink: 0;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-decoration: none;
}
.brand-guide {
  color: var(--muted);
  font-weight: 450;
}
.search-trigger {
  height: 42px;
  background: #f6f8fb;
  border: 1px solid var(--line);
  border-radius: 7px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  padding: 0 14px;
  max-width: 510px;
  width: 100%;
  text-align: left;
  font-size: 0.875rem;
}
.search-trigger > span:first-child {
  font-size: 1.6rem;
  line-height: 1;
}
kbd {
  margin-left: auto;
  background: white;
  border: 1px solid #dce2eb;
  border-radius: 4px;
  padding: 0 6px;
  font: 0.75rem/1.7 inherit;
  white-space: nowrap;
}
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.header-actions > a {
  font-size: 0.875rem;
  font-weight: 650;
  color: var(--ink);
  text-decoration: none;
}
.menu-button {
  display: none;
}
.layout {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
}
.sidebar {
  position: sticky;
  top: var(--header);
  align-self: start;
  height: calc(100dvh - var(--header));
  overflow: auto;
  background: var(--rail);
  padding: 28px 18px 22px;
  scrollbar-color: #39455b var(--rail);
  color: #b3bfd1;
}
.sidebar a {
  display: block;
  text-decoration: none;
  color: #c5cede;
  padding: 7px 13px;
  line-height: 1.45;
  border-radius: 5px;
  font-size: 0.875rem;
}
.sidebar a:hover {
  background: #203049;
  color: white;
}
.sidebar a.active {
  background: #263d61;
  color: white;
  border-left: 3px solid #91b0ff;
  padding-left: 10px;
}
.nav-home {
  margin-bottom: 25px;
}
.nav-group {
  margin: 26px 0;
}
.nav-group p {
  color: #8ea0b8;
  font-size: 0.75rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  margin: 0 13px 10px;
  font-weight: 650;
}
.sidebar-foot {
  border-top: 1px solid #344056;
  margin: 30px 13px 0;
  padding-top: 20px;
  color: #8ea0b8;
  font-size: 0.75rem;
  letter-spacing: 0.07em;
}
.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 850px) 185px;
  gap: 56px;
  max-width: 1230px;
  padding: 48px 48px 0;
  margin: 0 auto;
  width: 100%;
}
.home-layout {
  display: block;
  max-width: 1240px;
  padding-top: 52px;
}
.article,
.home {
  min-width: 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 38px;
}
.breadcrumb a {
  text-decoration: none;
}
.article-meta {
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  gap: 12px;
  margin-bottom: 15px;
}
.lead {
  font-size: 1.18rem;
  line-height: 1.7;
  color: #637087;
  margin-bottom: 34px;
  max-width: 730px;
}
.home-lead {
  max-width: 680px;
}
.article-section {
  margin-top: 42px;
  scroll-margin-top: 100px;
}
.article-section h2 {
  margin-bottom: 22px;
}
.article-section p {
  max-width: 74ch;
}
.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
}
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 25px 43px;
  max-width: 78ch;
}
.steps > li:before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 0.8125rem;
  font-weight: 650;
  color: var(--blue);
  background: #eef1ff;
  border: 1px solid #dfe5ff;
  border-radius: 6px;
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
}
.article-section ul {
  padding-left: 23px;
}
.article-section li {
  margin-bottom: 12px;
}
.notice {
  padding: 23px 25px;
  background: #f2f5fb;
  border-left: 3px solid #6281c2;
  margin: 34px 0;
  color: #36465f;
  font-size: 0.9375rem;
}
.notice strong {
  display: block;
  color: var(--ink);
  margin-bottom: 8px;
}
.notice p {
  margin-bottom: 0;
}
.notice a {
  display: inline-block;
  margin-top: 10px;
}
.notice.availability {
  background: #fff8e9;
  border-color: #c28a2c;
  color: #71531c;
}
.toc {
  position: sticky;
  top: calc(var(--header) + 45px);
  height: fit-content;
  border-left: 1px solid var(--line);
  padding-left: 20px;
  align-self: start;
  font-size: 0.875rem;
}
.toc p {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 16px;
}
.toc a {
  display: block;
  text-decoration: none;
  color: #657188;
  line-height: 1.45;
  padding: 7px 0;
}
.toc a:hover {
  color: var(--blue);
}
.print-button {
  background: none;
  border: 0;
  border-top: 1px solid var(--line);
  padding: 18px 0 0;
  color: var(--blue);
  font-size: 0.875rem;
  margin-top: 20px;
}
.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 7px;
  margin: 25px 0;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9375rem;
}
th,
td {
  text-align: left;
  padding: 15px 18px;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  min-width: 150px;
}
th {
  background: #f5f7fb;
  color: var(--ink);
  font-weight: 650;
}
tr:last-child td {
  border-bottom: 0;
}
figure {
  margin: 28px 0;
}
figure img {
  display: block;
  border: 1px solid #d8e1ef;
  border-radius: 8px;
  background: #f4f7fb;
}
figcaption {
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.6;
  margin-top: 12px;
}
.related {
  display: grid;
  gap: 10px;
}
.related a {
  padding: 16px 19px;
  border: 1px solid var(--line);
  border-radius: 6px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  text-decoration: none;
  font-size: 0.9375rem;
}
.related a:hover {
  background: #f5f7ff;
}
.page-turn {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding-top: 25px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.page-turn a {
  display: block;
  text-decoration: none;
  line-height: 1.5;
}
.page-turn a:last-child {
  text-align: right;
}
.page-turn small {
  display: block;
  color: var(--muted);
  font-size: 0.8125rem;
  margin-bottom: 5px;
}
footer {
  font-size: 0.75rem;
  line-height: 1.7;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding: 26px 0;
  margin-top: 55px;
  color: var(--muted);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.075em;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 650;
  margin: 0 0 20px;
}
.home-intro {
  display: grid;
  grid-template-columns: 1.08fr 1fr;
  gap: 26px;
  margin: 36px 0 50px;
}
.start-card {
  background: #263fe4;
  border-radius: 9px;
  color: white;
  padding: 28px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}
.start-card:hover {
  background: #1d35ce;
}
.start-card h2 {
  color: white;
  margin: 24px 0 14px;
  font-size: 1.75rem;
}
.start-card p {
  font-size: 0.9375rem;
  color: #e2e6ff;
  line-height: 1.6;
}
.card-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.045em;
  color: #dbe2ff;
}
.card-bottom {
  font-size: 0.875rem;
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding-top: 15px;
}
.quick-list {
  padding: 14px 0;
}
.quick-list h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.055em;
  margin: 0 0 18px;
}
.quick-list a {
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
  font-weight: 550;
  font-size: 0.9375rem;
}
.quick-list a > span:last-child {
  margin-left: auto;
  color: var(--muted);
}
.number {
  font-size: 0.75rem;
  color: #8d99aa;
  font-weight: 400;
}
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 28px;
}
.section-heading h2 {
  font-size: 1.5rem;
  margin: 0;
}
.section-heading > span {
  color: var(--muted);
  font-size: 0.8125rem;
  white-space: nowrap;
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
}
.category {
  padding: 25px 0 27px;
  border-top: 1px solid var(--line);
}
.category h3 {
  margin-bottom: 15px;
}
.category a {
  display: block;
  text-decoration: none;
  color: #5f6d82;
  font-size: 0.9375rem;
  padding: 4px 0;
}
.category a:hover {
  color: var(--blue);
  text-decoration: underline;
}
.search-dialog {
  width: min(710px, calc(100% - 28px));
  max-height: 85dvh;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 30px 100px #111d3040;
  color: var(--ink);
}
.search-dialog::backdrop {
  background: #101d306b;
}
.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
}
.dialog-header h2 {
  font-size: 1.25rem;
  margin: 0;
}
.dialog-header button {
  border: 0;
  background: #f2f5fa;
  border-radius: 6px;
  font-size: 1.5rem;
  line-height: 1;
  width: 38px;
  height: 38px;
}
.search-dialog form {
  display: flex;
  gap: 10px;
  margin: 22px 0 10px;
}
.search-dialog input {
  min-width: 0;
  flex: 1;
  border: 1px solid #b7c3d6;
  border-radius: 5px;
  padding: 12px;
  color: var(--ink);
  background: white;
}
.search-dialog form button {
  font-size: 0.8125rem;
  background: #f5f7fb;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 9px;
}
.search-status {
  font-size: 0.8125rem;
  color: var(--muted);
  margin: 12px 0;
}
.search-results a {
  display: block;
  text-decoration: none;
  border-top: 1px solid var(--line);
  padding: 16px 6px;
}
.search-results strong {
  display: block;
  font-size: 1rem;
  color: var(--ink);
}
.search-results small {
  display: block;
  font-size: 0.75rem;
  color: var(--blue);
  margin-bottom: 4px;
}
.search-results p {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 6px 0 0;
  line-height: 1.5;
}
.search-results a:hover {
  background: #f5f7fb;
}
@media (min-width: 1700px) {
  .content-layout {
    gap: 80px;
    padding-top: 64px;
  }
}
@media (max-width: 1180px) {
  :root {
    --rail-width: 240px;
  }
  .content-layout {
    padding: 38px 32px 0;
    grid-template-columns: minmax(0, 1fr);
  }
  .toc {
    display: none;
  }
  .brand {
    font-size: 0.8rem;
  }
  .topbar {
    padding: 0 22px;
    gap: 25px;
  }
  .brand {
    width: calc(var(--rail-width) - 22px);
  }
  .home-intro {
    gap: 20px;
  }
  .search-trigger {
    max-width: 470px;
  }
}
@media (max-width: 800px) {
  :root {
    --header: 68px;
  }
  .topbar {
    padding: 0 18px;
    gap: 15px;
  }
  .brand {
    width: auto;
  }
  .brand-guide {
    display: none;
  }
  .search-trigger {
    margin-left: auto;
    width: 42px;
    padding: 0;
    justify-content: center;
    flex-shrink: 0;
  }
  .search-trigger > span:nth-child(2),
  .search-trigger kbd {
    display: none;
  }
  .header-actions {
    margin-left: 0;
    gap: 12px;
  }
  .menu-button {
    display: block;
    background: none;
    border: 1px solid var(--line);
    border-radius: 5px;
    padding: 8px;
    font-size: 0.75rem;
    max-width: 110px;
    line-height: 1.3;
  }
  .layout {
    display: block;
  }
  .sidebar {
    display: none;
    position: fixed;
    left: 0;
    top: var(--header);
    width: min(340px, 90vw);
    z-index: 14;
    box-shadow: 12px 0 40px #111d3040;
  }
  .sidebar.open {
    display: block;
  }
  .content-layout {
    padding: 32px 24px 0;
  }
  .home-intro {
    grid-template-columns: 1fr;
  }
  .start-card {
    padding: 26px;
  }
  .start-card h2 {
    margin-top: 17px;
  }
  .quick-list {
    padding: 8px 0;
  }
  .home-intro {
    margin-bottom: 35px;
    gap: 25px;
  }
  .category-grid {
    gap: 0 25px;
  }
  .lead {
    font-size: 1.0625rem;
  }
  .breadcrumb {
    margin-bottom: 25px;
  }
  .article-section {
    margin-top: 34px;
  }
  .notice {
    padding: 19px;
  }
  .home h1 {
    font-size: 2.45rem;
  }
  .section-heading h2 {
    font-size: 1.35rem;
  }
}
@media (max-width: 470px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
  .content-layout {
    padding: 28px 20px 0;
  }
  .brand {
    font-size: 0.8125rem;
    gap: 8px;
  }
  .topbar {
    padding: 0 14px;
    gap: 12px;
  }
  .brand img {
    width: 26px;
    height: 26px;
  }
  .header-actions {
    gap: 9px;
  }
  .menu-button {
    max-width: 89px;
  }
  .home h1 {
    font-size: 2.1rem;
  }
  .article h1 {
    font-size: 2rem;
  }
  .steps > li {
    padding-left: 39px;
  }
  footer {
    flex-direction: column;
    gap: 4px;
  }
  .search-dialog {
    padding: 18px;
  }
  .search-dialog form {
    flex-direction: column;
  }
  .section-heading {
    align-items: start;
  }
  .search-dialog input {
    width: 100%;
  }
  .page-turn {
    gap: 16px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}
@media print {
  .topbar,
  .sidebar,
  .toc,
  .skip,
  .search-dialog,
  .page-turn,
  .related {
    display: none !important;
  }
  .layout,
  .content-layout {
    display: block;
    padding: 0;
    margin: 0;
    max-width: none;
  }
  .article,
  .home {
    font-size: 11pt;
    line-height: 1.5;
  }
  h1 {
    font-size: 26pt;
  }
  h2 {
    font-size: 18pt;
  }
  .article-section {
    margin-top: 25px;
  }
  .notice,
  figure,
  table {
    break-inside: avoid;
  }
  .notice {
    background: white;
    border: 1px solid #aaa;
  }
  .article-section h2 {
    break-after: avoid;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  footer {
    margin-top: 25px;
  }
  body {
    background: white;
  }
  figure img {
    max-height: 650px;
    object-fit: contain;
  }
  * {
    box-shadow: none !important;
  }
}