:root {
  --ink: #0b1f2a;
  --ink-soft: #3a5360;
  --muted: #6b8290;
  --paper: #e8eef2;
  --panel: #f7fafb;
  --line: #c5d3db;
  --accent: #0f6e56;
  --accent-ink: #f4f8f9;
  --font-display: "Syne", sans-serif;
  --font-body: "Source Sans 3", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.55;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(11, 31, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 31, 42, 0.035) 1px, transparent 1px),
    radial-gradient(ellipse 90% 55% at 8% -8%, rgba(15, 110, 86, 0.14), transparent 55%),
    radial-gradient(ellipse 70% 45% at 100% 0%, rgba(47, 93, 138, 0.1), transparent 50%);
  background-size: 48px 48px, 48px 48px, auto, auto;
}

.top,
main,
.foot {
  position: relative;
  z-index: 1;
}

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.75rem clamp(1.25rem, 4vw, 3rem) 0;
  flex-wrap: wrap;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 7vw, 4.25rem);
  letter-spacing: -0.045em;
  line-height: 0.9;
}

.top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.35rem;
}

.top nav a,
.foot a,
.block a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

.top nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.top nav a:hover,
.top nav a:focus-visible {
  border-bottom-color: currentColor;
}

main {
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 4rem;
  max-width: 46rem;
}

.hero {
  min-height: min(62vh, 34rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 2.5rem;
  animation: rise 520ms ease both;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 4.2vw, 2.65rem);
  letter-spacing: -0.03em;
  line-height: 1.12;
  max-width: 18ch;
}

.lede {
  margin: 1.1rem 0 0;
  max-width: 36ch;
  color: var(--ink-soft);
  font-size: 1.2rem;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.75rem 0 0;
}

.cta {
  display: inline-block;
  padding: 0.7rem 1.15rem;
  background: var(--ink);
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 160ms ease, background 160ms ease;
}

.cta:hover,
.cta:focus-visible {
  transform: translateY(-1px);
  background: var(--accent);
}

.cta-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}

.cta-secondary:hover,
.cta-secondary:focus-visible {
  background: rgba(11, 31, 42, 0.06);
  color: var(--ink);
}

.block {
  padding: 2.25rem 0 0;
  border-top: 1px solid var(--line);
  animation: rise 560ms ease both;
}

.block:nth-of-type(2) { animation-delay: 40ms; }
.block:nth-of-type(3) { animation-delay: 80ms; }
.block:nth-of-type(4) { animation-delay: 120ms; }
.block:nth-of-type(5) { animation-delay: 160ms; }

.block h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.block p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

.plain-list,
.workflow {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.plain-list li,
.workflow li {
  margin: 0.35rem 0;
}

.workflow {
  padding-left: 1.35rem;
}

.code {
  margin: 0 0 1rem;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--ink);
}

.code code {
  font-family: inherit;
}

.foot {
  padding: 0 clamp(1.25rem, 4vw, 3rem) 2.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.foot p {
  margin: 0;
  max-width: 46rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: auto;
    padding-bottom: 1.75rem;
  }

  .hero h1 {
    max-width: none;
  }
}