:root {
  color-scheme: light;
  --ink: #172554;
  --ink-soft: #334155;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --line: #dbe4ee;
  --emerald: #047857;
  --emerald-dark: #065f46;
  --emerald-soft: #ecfdf5;
  --gold: #ca8a04;
  --gold-soft: #fef9c3;
  --violet: #4338ca;
  --shadow: 0 20px 55px rgba(15, 23, 42, 0.1);
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --content: 72rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--emerald-dark);
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--violet);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid #facc15;
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: 0.65rem;
  background: var(--ink);
  color: #fff;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(203, 213, 225, 0.82);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  min-height: 5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: #fff;
  box-shadow: 0 7px 18px rgba(15, 23, 42, 0.08);
}

.brand-copy {
  display: grid;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.brand-copy span {
  margin-top: 0.22rem;
  color: #64748b;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
}

.main-nav a {
  padding: 0.58rem 0.66rem;
  border-radius: 0.62rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  background: var(--emerald-soft);
  color: var(--emerald-dark);
}

.main-nav .nav-cta {
  margin-left: 0.35rem;
  padding-inline: 0.9rem;
  background: var(--ink);
  color: #fff;
}

.main-nav .nav-cta:hover {
  background: var(--emerald-dark);
  color: #fff;
}

.breadcrumbs {
  padding-block: 1.15rem 0;
  color: #64748b;
  font-size: 0.86rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: #94a3b8;
  content: "/";
}

.breadcrumbs a {
  color: inherit;
}

.hero {
  overflow: hidden;
  padding-block: 4.5rem 4rem;
  background:
    radial-gradient(circle at 85% 20%, rgba(250, 204, 21, 0.2), transparent 24rem),
    radial-gradient(circle at 8% 92%, rgba(52, 211, 153, 0.2), transparent 26rem),
    linear-gradient(145deg, #f8fafc 0%, #fff 54%, #ecfdf5 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(18rem, 0.7fr);
  align-items: center;
  gap: 3.5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1rem;
  color: var(--emerald-dark);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 1.55rem;
  height: 0.2rem;
  border-radius: 999px;
  background: #facc15;
  content: "";
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.14;
}

h1 {
  max-width: 18ch;
  margin-bottom: 1.25rem;
  font-size: clamp(2.45rem, 6vw, 4.65rem);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.8rem, 3.6vw, 2.65rem);
}

h3 {
  margin-bottom: 0.55rem;
  font-size: 1.22rem;
}

.lead {
  max-width: 65ch;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 2vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.05rem;
  border: 1px solid var(--ink);
  border-radius: 0.75rem;
  background: var(--ink);
  color: #fff;
  font-weight: 750;
  text-decoration: none;
}

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

.button-secondary {
  border-color: #cbd5e1;
  background: #fff;
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--emerald);
  background: var(--emerald-soft);
  color: var(--emerald-dark);
}

.hero-card {
  position: relative;
  padding: 2rem;
  border: 1px solid rgba(203, 213, 225, 0.9);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
}

.hero-card::before {
  position: absolute;
  width: 4rem;
  height: 0.4rem;
  top: 0;
  left: 2rem;
  border-radius: 0 0 999px 999px;
  background: linear-gradient(90deg, #059669, #facc15);
  content: "";
}

.hero-card p:last-child {
  margin-bottom: 0;
}

.hero-card .number {
  display: inline-grid;
  width: 2.3rem;
  height: 2.3rem;
  margin-bottom: 0.75rem;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-weight: 850;
}

.pilot-note {
  padding-block: 1.15rem;
  border-block: 1px solid #fde68a;
  background: var(--gold-soft);
}

.pilot-note .shell {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.pilot-note strong {
  white-space: nowrap;
}

.pilot-note p {
  margin: 0;
  color: #713f12;
}

.section {
  padding-block: 4.5rem;
}

.section-soft {
  border-block: 1px solid #e2e8f0;
  background: var(--surface-soft);
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 1.1rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}

.card-kicker {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--emerald);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.checklist {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  margin-top: 0.65rem;
  padding-left: 1.7rem;
}

.checklist li::before {
  position: absolute;
  top: 0.17rem;
  left: 0;
  display: grid;
  width: 1.15rem;
  height: 1.15rem;
  place-items: center;
  border-radius: 50%;
  background: var(--emerald-soft);
  color: var(--emerald-dark);
  content: "✓";
  font-size: 0.72rem;
  font-weight: 900;
}

.steps {
  margin: 0;
  padding: 0;
  counter-reset: steps;
  list-style: none;
}

.steps li {
  position: relative;
  min-height: 5.5rem;
  padding: 0 0 1.5rem 4.3rem;
  counter-increment: steps;
}

.steps li:not(:last-child)::before {
  position: absolute;
  top: 3rem;
  bottom: 0;
  left: 1.45rem;
  width: 2px;
  background: #d1fae5;
  content: "";
}

.steps li::after {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border-radius: 0.85rem;
  background: var(--ink);
  color: #fff;
  content: counter(steps, decimal-leading-zero);
  font-weight: 850;
}

.steps p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
}

.callout {
  padding: 1.5rem;
  border-left: 0.35rem solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: #fffbeb;
}

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

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
}

.faq-list summary {
  padding: 1rem 1.2rem;
  color: var(--ink);
  cursor: pointer;
  font-weight: 750;
}

.faq-list details p {
  margin: 0;
  padding: 0 1.2rem 1.2rem;
  color: var(--ink-soft);
}

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

.related a {
  display: block;
  min-height: 100%;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
}

.related a:hover {
  border-color: #6ee7b7;
  box-shadow: 0 12px 30px rgba(5, 150, 105, 0.1);
}

.related strong {
  display: block;
  margin-bottom: 0.3rem;
}

.related span {
  color: var(--ink-soft);
}

.cta-band {
  padding-block: 3.5rem;
  background:
    radial-gradient(circle at 90% 0, rgba(250, 204, 21, 0.24), transparent 22rem),
    var(--ink);
  color: #fff;
}

.cta-band .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.cta-band h2 {
  margin-bottom: 0.45rem;
  color: #fff;
}

.cta-band p {
  max-width: 54rem;
  margin: 0;
  color: #dbeafe;
}

.cta-band .button {
  flex: 0 0 auto;
  border-color: #fff;
  background: #fff;
  color: var(--ink);
}

.cta-band .button:hover {
  border-color: #facc15;
  background: #facc15;
}

.site-footer {
  padding-block: 2.5rem;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}

.site-footer p {
  max-width: 46rem;
  margin: 0.8rem 0 0;
  color: #64748b;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem 1rem;
}

.footer-links a {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.not-found {
  display: grid;
  min-height: 65vh;
  place-items: center;
  padding-block: 5rem;
  text-align: center;
}

.not-found h1 {
  max-width: none;
}

.not-found p {
  max-width: 40rem;
  margin-inline: auto;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

@media (max-width: 64rem) {
  .header-inner {
    align-items: flex-start;
    padding-block: 0.8rem;
  }

  .main-nav {
    flex-wrap: wrap;
  }

  .main-nav a:not(.nav-cta) {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-card {
    max-width: 40rem;
  }
}

@media (max-width: 48rem) {
  .shell {
    width: min(calc(100% - 1.25rem), var(--content));
  }

  .brand-copy span {
    display: none;
  }

  .header-inner {
    min-height: 4.25rem;
  }

  .hero {
    padding-block: 3.25rem;
  }

  .grid-2,
  .grid-3,
  .related {
    grid-template-columns: 1fr;
  }

  .pilot-note .shell,
  .cta-band .shell,
  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  .pilot-note strong {
    white-space: normal;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}