:root {
  --bg: #0f172a;
  --bg-2: #111827;
  --surface: rgba(17, 28, 51, .86);
  --surface-solid: #111c33;
  --surface-soft: #17233d;
  --text: #e5e7eb;
  --muted: #a7b0c0;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --warning: #fde68a;
  --warning-bg: rgba(120, 53, 15, .28);
  --border: #26344f;
  --max: 980px;
  --radius: 1.2rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(14, 165, 233, .22), transparent 34rem),
    radial-gradient(circle at top right, rgba(34, 197, 94, .12), transparent 30rem),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-underline-offset: .22em;
}

a:hover {
  color: #7dd3fc;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  z-index: 10;
  padding: .7rem 1rem;
  background: var(--text);
  color: var(--bg);
  border-radius: .5rem;
}

.skip-link:focus {
  left: 1rem;
}

.site-header,
.site-footer,
main {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.site-header {
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-weight: 750;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: .7rem;
  background: rgba(56, 189, 248, .14);
  border: 1px solid rgba(56, 189, 248, .32);
  color: var(--accent);
  font-size: .78rem;
  letter-spacing: .04em;
}

.site-nav {
  display: flex;
  gap: .35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: .5rem .7rem;
  border-radius: .6rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  background: rgba(255, 255, 255, .06);
}

main {
  padding: 1rem 1.25rem 4rem;
}

.section {
  margin-block: 2rem;
}

.narrow {
  max-width: 820px;
}

.hero {
  padding: 3.5rem 0 2.5rem;
}

.page-title {
  padding: 2.2rem 0 1.2rem;
}

.eyebrow {
  color: var(--accent);
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .83rem;
  margin-bottom: .7rem;
}

.qr-card--centered {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.qr-card--centered .qr-card__text {
  max-width: 100%;
}

.qr-card--centered .qr-card__image {
  margin-inline: auto;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 1rem;
  font-size: clamp(2.25rem, 7vw, 4.7rem);
  line-height: 1.03;
  letter-spacing: -.045em;
}

h2 {
  line-height: 1.2;
  letter-spacing: -.02em;
}

.lead {
  max-width: 700px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.24rem);
}

.actions {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: .78rem 1rem;
  border: 1px solid var(--border);
  border-radius: .8rem;
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, .035);
  font-weight: 680;
}

.button:hover {
  color: white;
  border-color: rgba(125, 211, 252, .62);
  background: rgba(255, 255, 255, .065);
}

.button.primary {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: white;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.card,
.panel,
.document-card,
.warning,
.content-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 18px 60px rgba(0, 0, 0, .18);
}

.card {
  padding: 1.25rem;
}

.card-icon {
  width: fit-content;
  margin-bottom: 1.3rem;
  padding: .2rem .55rem;
  border-radius: 999px;
  color: var(--accent);
  background: rgba(56, 189, 248, .1);
  font-size: .76rem;
  font-weight: 800;
}

.card p,
.panel p,
.document-card p,
.content-block p,
.warning p,
.link-list {
  color: var(--muted);
}

.card-link {
  font-weight: 700;
}

.panel {
  padding: 1.35rem;
}

.document-list {
  display: grid;
  gap: 1rem;
}

.document-card {
  padding: 1.25rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
}

.link-list {
  padding-left: 1.1rem;
  margin-bottom: 0;
}

.link-list li + li {
  margin-top: .55rem;
}

.warning {
  padding: 1.25rem;
  border-color: rgba(253, 230, 138, .35);
  background: var(--warning-bg);
}

.warning h2 {
  color: var(--warning);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.content-block {
  padding: 1.25rem;
}

pre {
  overflow-x: auto;
  margin: 1rem 0 0;
  padding: 1rem;
  border-radius: .9rem;
  border: 1px solid var(--border);
  background: rgba(2, 6, 23, .42);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  color: #dbeafe;
  font-size: .92rem;
  white-space: pre-wrap;
}

.site-footer {
  padding: 2rem 1.25rem;
  color: var(--muted);
  border-top: 1px solid rgba(38, 52, 79, .8);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    padding-top: 2rem;
  }

  .cards,
  .document-card {
    grid-template-columns: 1fr;
  }

  .document-card .button {
    justify-self: start;
  }
}