:root {
  color-scheme: dark;
  --ink: #f1fbfc;
  --muted: #a6bbc0;
  --dim: #71888e;
  --bg: #05090b;
  --surface: rgba(11, 20, 23, 0.88);
  --surface-strong: #0d181b;
  --line: rgba(122, 226, 218, 0.2);
  --cyan: #4fe6d4;
  --cyan-soft: #9ff7ec;
  --magenta: #f064d4;
  --amber: #f2bd67;
  --max: 1120px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(rgba(79, 230, 212, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 230, 212, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 16% 4%, rgba(40, 160, 158, 0.16), transparent 34rem),
    radial-gradient(circle at 92% 34%, rgba(240, 100, 212, 0.08), transparent 30rem),
    var(--bg);
  background-size: 44px 44px, 44px 44px, auto, auto, auto;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
}

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

a {
  color: var(--cyan-soft);
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: #fff;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--cyan);
  color: #001310;
  font-weight: 800;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

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

.shell {
  width: min(calc(100% - 2.25rem), var(--max));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(5, 9, 11, 0.88);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand img {
  width: 210px;
  height: 50px;
  object-fit: contain;
  object-position: left center;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--cyan);
}

.breadcrumbs {
  padding-block: 1.35rem 0;
  color: var(--dim);
  font-size: 0.84rem;
}

.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: #456067;
  content: "/";
}

.breadcrumbs a {
  color: var(--muted);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 6rem);
  padding-block: clamp(4rem, 10vw, 8rem);
}

.eyebrow,
.label {
  margin: 0 0 0.85rem;
  color: var(--cyan);
  font: 750 0.76rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 15ch;
  margin-bottom: 1.4rem;
  font-size: clamp(2.75rem, 7vw, 6.7rem);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.65rem);
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 1.3rem;
}

p {
  margin-top: 0;
}

.lede {
  max-width: 62ch;
  margin-bottom: 1.7rem;
  color: #c9dadd;
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.hero__aside {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(79, 230, 212, 0.08), rgba(11, 20, 23, 0.78));
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.3);
}

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

.actions,
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.button--primary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: #001411;
}

.button--primary:hover {
  background: #a3fff4;
  color: #001411;
}

.chip {
  padding: 0.35rem 0.7rem;
  border: 1px solid rgba(166, 187, 192, 0.24);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.83rem;
}

.section {
  padding-block: clamp(3.6rem, 8vw, 7rem);
  border-top: 1px solid var(--line);
}

.section__intro {
  max-width: 720px;
  margin-bottom: 2.25rem;
}

.section__intro > p:last-child,
.card p,
.prose p,
.step p,
details p {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.card {
  grid-column: span 4;
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}

.card--wide {
  grid-column: span 6;
}

.card__meta {
  color: var(--amber);
  font: 700 0.74rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

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

.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--line);
}

.facts div {
  padding: 1.35rem;
  background: var(--surface-strong);
}

.facts dt {
  margin-bottom: 0.4rem;
  color: var(--dim);
  font: 700 0.72rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.facts dd {
  margin: 0;
  color: var(--ink);
  font-weight: 750;
}

.prose {
  display: grid;
  grid-template-columns: minmax(220px, 0.45fr) minmax(0, 1fr);
  gap: clamp(2rem, 7vw, 6rem);
}

.prose__body {
  max-width: 720px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  counter-reset: steps;
}

.step {
  padding: 1.35rem;
  border-top: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(79, 230, 212, 0.06), transparent);
  counter-increment: steps;
}

.step::before {
  display: block;
  margin-bottom: 1.3rem;
  color: var(--cyan);
  content: "0" counter(steps);
  font: 700 0.8rem/1 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.faq-list {
  max-width: 820px;
}

details {
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

details p {
  max-width: 70ch;
  margin: 0.85rem 0 0;
}

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(79, 230, 212, 0.35);
  border-radius: 24px;
  background:
    radial-gradient(circle at 90% 10%, rgba(79, 230, 212, 0.2), transparent 23rem),
    var(--surface-strong);
}

.cta h2 {
  max-width: 16ch;
  margin-bottom: 0.6rem;
}

.cta p {
  max-width: 56ch;
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer {
  margin-top: clamp(4rem, 8vw, 7rem);
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.86rem;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer a {
  color: var(--muted);
}

@media (max-width: 860px) {
  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.8rem 1rem;
  }

  .site-nav ul {
    justify-content: flex-start;
  }

  .hero,
  .prose,
  .cta {
    grid-template-columns: 1fr;
  }

  .card,
  .card--wide {
    grid-column: span 6;
  }

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

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

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

  .brand img {
    width: 176px;
    height: 42px;
  }

  .site-nav ul {
    gap: 0.45rem 0.8rem;
  }

  .hero {
    padding-block: 3.2rem 4rem;
  }

  .card,
  .card--wide {
    grid-column: 1 / -1;
  }

  .facts,
  .steps {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}