:root {
  --guide-ink: #10213f;
  --guide-muted: #586a84;
  --guide-blue: #2563eb;
  --guide-blue-dark: #1747a6;
  --guide-cyan: #0891b2;
  --guide-sky: #eef7ff;
  --guide-line: #d9e7f7;
  --guide-amber: #f6b81a;
}

.guide-page {
  background: #fff;
  color: var(--guide-ink);
}

.guide-page main {
  overflow: clip;
}

.guide-page .navbar {
  background: #1454c4;
}

.guide-page .navbar.scrolled {
  background: #1048aa;
}

.guide-page .logo-text,
.guide-page .logo-subtitle,
.guide-page .nav-link {
  color: #fff;
}

.guide-page .nav-link::after {
  background: var(--guide-amber);
}

.guide-page .nav-links .btn {
  border-color: var(--guide-amber);
  background: var(--guide-amber);
  color: #10213f;
  box-shadow: 0 4px 0 #a66a00;
}

.guide-page .mobile-menu-toggle span {
  background: #fff;
}

.guide-hero {
  padding: 150px 0 80px;
  border-bottom: 1px solid var(--guide-line);
  background:
    linear-gradient(90deg, rgba(37, 99, 235, .05) 1px, transparent 1px),
    linear-gradient(rgba(37, 99, 235, .05) 1px, transparent 1px),
    linear-gradient(145deg, #f9fcff, #edf6ff);
  background-size: 34px 34px, 34px 34px, auto;
}

.guide-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  color: #677892;
  font-size: 13px;
}

.guide-breadcrumb a {
  color: var(--guide-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.guide-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--guide-blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
}

.guide-kicker::before {
  width: 26px;
  height: 3px;
  background: var(--guide-amber);
  content: "";
}

.guide-hero h1 {
  max-width: 900px;
  margin-top: 18px;
  font-size: clamp(36px, 5.3vw, 66px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.045em;
}

.guide-hero-lede {
  max-width: 820px;
  margin-top: 24px;
  color: var(--guide-muted);
  font-size: 18px;
  line-height: 1.95;
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 28px;
  color: #6c7e97;
  font-size: 12px;
  font-weight: 600;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) 260px;
  justify-content: space-between;
  gap: 72px;
  padding-top: 76px;
  padding-bottom: 112px;
}

.guide-article {
  min-width: 0;
  color: #263a57;
  font-size: 16px;
  line-height: 2;
}

.guide-article > :first-child {
  margin-top: 0;
}

.guide-article h2 {
  margin: 76px 0 26px;
  padding: 0 0 16px 20px;
  border-bottom: 3px solid var(--guide-blue);
  border-left: 7px solid var(--guide-amber);
  color: var(--guide-ink);
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 900;
  line-height: 1.45;
  letter-spacing: -.03em;
}

.guide-article h3 {
  margin: 46px 0 16px;
  color: var(--guide-ink);
  font-size: 23px;
  font-weight: 800;
  line-height: 1.55;
}

.guide-article p,
.guide-article ul,
.guide-article ol,
.guide-article table,
.guide-article figure,
.guide-article .guide-note,
.guide-article .guide-definition,
.guide-article .guide-checklist {
  margin-top: 22px;
}

.guide-article ul,
.guide-article ol {
  padding-left: 1.5em;
}

.guide-article li + li {
  margin-top: 9px;
}

.guide-article strong {
  color: var(--guide-ink);
}

.guide-article a:not(.btn) {
  color: var(--guide-blue-dark);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: #8bb5ff;
  text-underline-offset: 4px;
}

.guide-summary {
  padding: 30px;
  border: 2px solid var(--guide-blue);
  border-radius: 8px;
  background: #f7fbff;
  box-shadow: 8px 8px 0 #d9eaff;
}

.guide-summary h2 {
  margin: 0 0 16px;
  padding: 0;
  border: 0;
  font-size: 24px;
}

.guide-summary ul {
  margin-top: 0;
}

.guide-note {
  padding: 22px 24px;
  border-left: 5px solid var(--guide-amber);
  background: #fff8df;
  color: #4c4126;
}

.guide-note strong {
  display: block;
  margin-bottom: 5px;
}

.guide-definition {
  padding: 24px;
  border: 1px solid var(--guide-line);
  border-radius: 6px;
  background: var(--guide-sky);
}

.guide-definition dt {
  color: var(--guide-blue-dark);
  font-size: 19px;
  font-weight: 900;
}

.guide-definition dd {
  margin-top: 6px;
}

.guide-checklist {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.guide-checklist li {
  position: relative;
  margin: 0;
  padding: 14px 16px 14px 46px;
  border: 1px solid var(--guide-line);
  background: #fff;
}

.guide-checklist li::before {
  position: absolute;
  top: 14px;
  left: 15px;
  display: grid;
  width: 21px;
  height: 21px;
  place-items: center;
  border-radius: 50%;
  background: var(--guide-blue);
  color: #fff;
  content: "✓";
  font-size: 12px;
  font-weight: 900;
}

.guide-table-wrap {
  overflow-x: auto;
  margin-top: 24px;
  border: 1px solid var(--guide-line);
}

.guide-article table {
  width: 100%;
  min-width: 620px;
  margin: 0;
  border-collapse: collapse;
  background: #fff;
  font-size: 14px;
  line-height: 1.7;
}

.guide-article th,
.guide-article td {
  padding: 15px;
  border-bottom: 1px solid var(--guide-line);
  text-align: left;
  vertical-align: top;
}

.guide-article th {
  background: #eaf4ff;
  color: var(--guide-ink);
  font-weight: 800;
}

.guide-screen {
  overflow: hidden;
  border: 2px solid var(--guide-ink);
  border-radius: 8px;
  background: #edf4fb;
  box-shadow: 9px 9px 0 #bfdbfe;
}

.guide-screen img {
  display: block;
  width: 100%;
  height: auto;
}

.guide-screen figcaption {
  padding: 13px 16px;
  border-top: 1px solid var(--guide-line);
  background: #fff;
  color: #667891;
  font-size: 12px;
  line-height: 1.6;
}

.guide-aside {
  align-self: start;
  position: sticky;
  top: 104px;
}

.guide-toc,
.guide-side-card {
  padding: 24px;
  border: 1px solid var(--guide-line);
  background: #f8fbff;
}

.guide-toc h2,
.guide-side-card h2 {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: .08em;
}

.guide-toc ol {
  display: grid;
  gap: 10px;
  margin-top: 17px;
  padding-left: 20px;
  color: #536680;
  font-size: 13px;
  line-height: 1.6;
}

.guide-toc a:hover {
  color: var(--guide-blue);
}

.guide-side-card {
  margin-top: 18px;
  border-top: 5px solid var(--guide-amber);
  background: var(--guide-ink);
  color: #fff;
}

.guide-side-card p {
  margin-top: 12px;
  color: #d3dcec;
  font-size: 13px;
  line-height: 1.8;
}

.guide-side-card .btn {
  width: 100%;
  margin-top: 17px;
  background: var(--guide-amber);
  color: var(--guide-ink);
  text-align: center;
}

.guide-related {
  padding: 88px 0;
  border-top: 1px solid var(--guide-line);
  background: #f1f7ff;
}

.guide-related h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
}

.guide-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 36px;
}

.guide-related-card {
  display: flex;
  min-height: 190px;
  flex-direction: column;
  padding: 25px;
  border: 2px solid var(--guide-line);
  border-radius: 7px;
  background: #fff;
  box-shadow: 6px 6px 0 #dbeafe;
  transition: transform .18s ease, border-color .18s ease;
}

.guide-related-card:hover {
  transform: translate(-2px, -2px);
  border-color: var(--guide-blue);
}

.guide-related-card span {
  color: var(--guide-blue);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .1em;
}

.guide-related-card h3 {
  margin-top: 11px;
  font-size: 20px;
  line-height: 1.55;
}

.guide-related-card p {
  margin-top: 10px;
  color: var(--guide-muted);
  font-size: 13px;
  line-height: 1.75;
}

.guide-related-card b {
  margin-top: auto;
  padding-top: 16px;
  color: var(--guide-blue);
  font-size: 13px;
}

.guide-cta {
  padding: 86px 0;
  border-top: 7px solid var(--guide-amber);
  background: var(--guide-ink);
  color: #fff;
}

.guide-cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
}

.guide-cta h2 {
  font-size: clamp(29px, 4.2vw, 48px);
  line-height: 1.45;
}

.guide-cta p {
  max-width: 620px;
  margin-top: 15px;
  color: #d3dcec;
  line-height: 1.8;
}

.guide-cta .btn {
  flex: 0 0 auto;
  border-color: var(--guide-amber);
  background: var(--guide-amber);
  color: var(--guide-ink);
  box-shadow: 0 5px 0 #9a6400;
}

.guide-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.guide-hub-card {
  display: block;
  padding: 30px;
  border: 2px solid var(--guide-line);
  border-radius: 7px;
  background: #fff;
  box-shadow: 7px 7px 0 #dbeafe;
}

.guide-hub-card:hover {
  border-color: var(--guide-blue);
}

.guide-hub-card span {
  color: var(--guide-blue);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .12em;
}

.guide-hub-card h2 {
  margin: 12px 0 0;
  padding: 0;
  border: 0;
  font-size: 25px;
}

.guide-hub-card p {
  color: var(--guide-muted);
  font-size: 14px;
}

.glossary-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 48px;
}

.glossary-index a {
  min-width: 45px;
  padding: 8px 12px;
  border: 1px solid var(--guide-line);
  background: #fff;
  color: var(--guide-blue-dark);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

.glossary-group {
  scroll-margin-top: 110px;
}

.glossary-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.glossary-term {
  scroll-margin-top: 110px;
  padding: 24px;
  border: 1px solid var(--guide-line);
  border-left: 5px solid var(--guide-blue);
  background: #fff;
}

.glossary-term dt {
  color: var(--guide-ink);
  font-size: 21px;
  font-weight: 900;
}

.glossary-term dt span {
  margin-left: 8px;
  color: #76879e;
  font-size: 11px;
  font-weight: 600;
}

.glossary-term dd {
  margin-top: 8px;
}

.footer-links {
  gap: 54px;
}

.footer-links-group span {
  display: block;
  max-width: 180px;
  color: rgba(255, 255, 255, .62);
  font-size: 12px;
  line-height: 1.7;
}

@media (max-width: 1080px) {
  .guide-layout {
    grid-template-columns: minmax(0, 1fr) 230px;
    gap: 38px;
  }
  .guide-page .nav-links { gap: 15px; }
  .guide-page .nav-link { font-size: 13px; }
}

@media (max-width: 840px) {
  .guide-page .nav-links {
    gap: 0;
    background: #0f3f99;
  }
  .guide-page .nav-link { color: #fff; }
  .guide-layout { display: block; }
  .guide-aside { display: none; }
  .guide-related-grid { grid-template-columns: 1fr; }
  .guide-cta-inner { display: block; }
  .guide-cta .btn { margin-top: 28px; }
}

@media (max-width: 640px) {
  .guide-hero { padding: 116px 0 58px; }
  .guide-hero h1 { font-size: 36px; }
  .guide-hero-lede { font-size: 16px; line-height: 1.85; }
  .guide-layout { padding-top: 50px; padding-bottom: 78px; }
  .guide-article { font-size: 15px; line-height: 1.9; }
  .guide-article h2 { margin-top: 58px; padding-left: 14px; font-size: 27px; }
  .guide-article h3 { margin-top: 37px; font-size: 21px; }
  .guide-summary { padding: 22px; box-shadow: 5px 5px 0 #d9eaff; }
  .guide-screen { box-shadow: 5px 5px 0 #bfdbfe; }
  .guide-related { padding: 66px 0; }
  .guide-cta { padding: 65px 0; }
  .guide-hub-grid { grid-template-columns: 1fr; }
  .guide-hub-card { padding: 24px; }
  .glossary-term { padding: 20px; }
  .footer-links { gap: 22px; }
  .guide-page .footer-links-group:last-child { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  .guide-related-card { transition: none; }
}