:root {
  color-scheme: dark;
  --background: #0b0e13;
  --surface: #131821;
  --surface-muted: #0f141c;
  --border: #293240;
  --text: #eef2f7;
  --text-muted: #aeb8c6;
  --accent: #76b9ff;
  --accent-strong: #9bcbff;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family:
    Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-strong);
}

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.narrow,
.prose {
  max-width: 780px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  transform: translateY(-180%);
  border-radius: 8px;
  background: var(--text);
  color: var(--background);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgb(255 255 255 / 8%);
  background: rgb(11 14 19 / 92%);
  backdrop-filter: blur(14px);
}

.header-content,
.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-content {
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 750;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 11px;
  background:
    linear-gradient(145deg, rgb(118 185 255 / 25%), transparent),
    var(--surface);
  color: var(--accent-strong);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.94rem;
  text-decoration: none;
}

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

.hero {
  display: grid;
  min-height: 560px;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(
      circle at 75% 25%,
      rgb(118 185 255 / 14%),
      transparent 35%
    ),
    linear-gradient(180deg, #0d1118, var(--background));
}

.hero-content {
  padding-block: 96px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.15;
  text-wrap: balance;
}

h1 {
  max-width: 900px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 9vw, 6.5rem);
  letter-spacing: -0.055em;
}

.prose h1 {
  font-size: clamp(2.4rem, 7vw, 4.4rem);
}

h2 {
  margin-bottom: 28px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.025em;
}

.prose h2 {
  margin-top: 52px;
  margin-bottom: 16px;
  font-size: 1.55rem;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--text-muted);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
}

.status {
  display: inline-block;
  max-width: 760px;
  margin: 34px 0 0;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgb(255 255 255 / 3%);
  color: var(--text-muted);
}

.section {
  padding-block: 88px;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  min-height: 210px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background:
    linear-gradient(145deg, rgb(118 185 255 / 7%), transparent 45%),
    var(--surface);
}

.card p,
.prose p,
.prose li {
  color: var(--text-muted);
}

.prose ul {
  padding-left: 1.4em;
}

.back-link {
  margin-top: 56px;
}

.site-footer {
  padding-block: 28px;
  border-top: 1px solid var(--border);
}

.footer-content {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-content p {
  margin: 0;
}

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

  .header-content {
    padding-block: 16px;
  }

  .site-nav {
    width: 100%;
    gap: 18px;
    overflow-x: auto;
  }

  .hero {
    min-height: auto;
  }

  .hero-content,
  .section {
    padding-block: 64px;
  }

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

  .card {
    min-height: auto;
  }

  .footer-content {
    gap: 8px;
  }
}

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