:root {
  --duet-ink: #162033;
  --duet-muted: #53657a;
  --duet-blue: #5c98de;
  --duet-blue-dark: #2c6ebd;
  --duet-soft: #f4f8fc;
  --duet-line: #dde8f4;
  --duet-green: #19a974;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--duet-ink);
  background: #fff;
  font-family: "Nunito Sans", "Open Sans", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

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

a {
  color: inherit;
}

.guide-nav {
  background: #fff;
  border-bottom: 1px solid var(--duet-line);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 8px 24px rgba(22, 32, 51, .04);
}

.guide-nav-inner {
  width: min(1160px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 15px 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 22px;
  align-items: center;
}

.guide-logo {
  color: var(--duet-ink);
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  font-size: 31px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}

.guide-nav-links,
.guide-nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.guide-nav-links {
  justify-content: center;
}

.guide-nav-actions {
  justify-content: flex-end;
}

.guide-nav a:not(.guide-logo):not(.guide-button) {
  color: var(--duet-muted);
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}

.guide-nav a:hover {
  color: var(--duet-blue-dark);
}

.guide-button {
  color: #fff;
  background: var(--duet-blue);
  border: 2px solid var(--duet-blue);
  border-radius: 6px;
  padding: 12px 18px;
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.guide-button:hover {
  color: #fff;
  background: var(--duet-blue-dark);
  border-color: var(--duet-blue-dark);
}

.guide-button.secondary {
  color: var(--duet-blue-dark);
  background: #fff;
}

.guide-hero {
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
  border-bottom: 1px solid var(--duet-line);
  padding: 82px 24px 58px;
}

.guide-inner {
  width: min(1100px, calc(100vw - 48px));
  margin: 0 auto;
}

.guide-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .82fr);
  gap: 44px;
  align-items: center;
}

.guide-kicker {
  color: var(--duet-blue-dark);
  margin-bottom: 14px;
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--duet-ink);
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  letter-spacing: 0;
  line-height: 1.12;
}

h1 {
  max-width: 740px;
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 900;
}

h2 {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 900;
}

h3 {
  font-size: 22px;
  font-weight: 900;
}

p {
  margin: 0;
  color: var(--duet-muted);
}

.guide-lede {
  max-width: 680px;
  margin-top: 24px;
  font-size: 21px;
  line-height: 1.55;
}

.guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.guide-hero-media {
  max-width: 500px;
  margin: 0 auto;
}

.guide-hero-media img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  filter: drop-shadow(0 22px 44px rgba(28, 55, 91, .16));
  display: block;
}

.guide-trust {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
}

.guide-trust span {
  color: var(--duet-ink);
  background: #fff;
  border: 1px solid var(--duet-line);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
  box-shadow: 0 8px 22px rgba(28, 55, 91, .05);
}

.guide-section {
  padding: 72px 24px;
}

.guide-section.soft {
  background: var(--duet-soft);
  border-top: 1px solid var(--duet-line);
  border-bottom: 1px solid var(--duet-line);
}

.guide-section-header {
  max-width: 760px;
  margin-bottom: 34px;
}

.guide-section-header p {
  margin-top: 16px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.guide-card,
.guide-step,
.guide-faq details {
  background: #fff;
  border: 1px solid var(--duet-line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(28, 55, 91, .06);
}

.guide-card,
.guide-step {
  padding: 24px;
}

.guide-card p,
.guide-step p {
  margin-top: 10px;
}

.guide-number {
  width: 34px;
  height: 34px;
  color: #fff;
  background: var(--duet-blue);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  font-weight: 900;
}

.guide-two-col {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: start;
}

.guide-note {
  background: #fff;
  border-left: 5px solid var(--duet-green);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 12px 28px rgba(28, 55, 91, .06);
}

.guide-note h3 {
  margin-bottom: 10px;
}

.guide-faq {
  max-width: 860px;
  display: grid;
  gap: 12px;
}

.guide-faq details {
  overflow: hidden;
}

.guide-faq summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 58px 20px 22px;
  color: var(--duet-ink);
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  font-weight: 900;
  position: relative;
}

.guide-faq summary::-webkit-details-marker {
  display: none;
}

.guide-faq summary::after {
  content: "+";
  width: 32px;
  height: 32px;
  color: var(--duet-blue-dark);
  background: #eff6ff;
  border: 1px solid #cfe1f7;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
}

.guide-faq details[open] summary {
  color: var(--duet-blue-dark);
  background: #f6fbff;
  border-bottom: 1px solid var(--duet-line);
}

.guide-faq details[open] summary::after {
  content: "-";
  color: #fff;
  background: var(--duet-blue);
  border-color: var(--duet-blue);
}

.guide-faq p {
  padding: 18px 22px 22px;
}

.guide-cta {
  background: var(--duet-ink);
  color: #fff;
  padding: 70px 24px;
}

.guide-cta h2,
.guide-cta p {
  color: #fff;
}

.guide-cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
}

.guide-related-list {
  display: grid;
  gap: 12px;
}

.guide-related-list a {
  color: var(--duet-blue-dark);
  background: #fff;
  border: 1px solid var(--duet-line);
  border-radius: 8px;
  padding: 14px 16px;
  font-weight: 900;
  text-decoration: none;
}

.guide-related-list a:hover {
  border-color: var(--duet-blue);
}

.footer-dark {
  background: #fff;
  border-top: 1px solid var(--duet-line);
  padding: 56px 24px 24px;
}

.container-3 {
  width: min(1100px, calc(100vw - 48px));
  margin: 0 auto;
}

.footer-wrapper {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 40px;
}

.footer-brand {
  color: var(--duet-ink);
  text-decoration: none;
}

.text-logo.footer {
  margin: 0;
  font-size: 31px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.title-small {
  color: var(--duet-ink);
  margin-bottom: 14px;
  font-family: Montserrat, "Nunito Sans", Arial, sans-serif;
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.footer-link {
  color: var(--duet-muted);
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
  display: block;
}

.footer-link:hover {
  color: var(--duet-blue-dark);
}

.social-icons-small {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.social-icon-small {
  width: 20px;
  height: 20px;
}

.footer-divider {
  width: min(1100px, calc(100vw - 48px));
  height: 1px;
  background: var(--duet-line);
  margin: 36px auto 18px;
}

.footer-copyright-center {
  color: var(--duet-muted);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 900px) {
  .guide-nav-inner,
  .guide-hero-grid,
  .guide-two-col,
  .guide-cta-grid,
  .footer-wrapper {
    grid-template-columns: 1fr;
  }

  .guide-nav-links,
  .guide-nav-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .guide-grid,
  .guide-trust,
  .footer-content {
    grid-template-columns: 1fr;
  }

  .guide-hero {
    padding-top: 56px;
  }
}

@media (max-width: 560px) {
  .guide-inner,
  .guide-nav-inner,
  .container-3,
  .footer-divider {
    width: min(100% - 32px, 1100px);
  }

  h1 {
    font-size: 38px;
  }

  .guide-section,
  .guide-cta {
    padding-left: 16px;
    padding-right: 16px;
  }
}