:root {
  --ink: #111111;
  --paper: #fff8eb;
  --yellow: #ffd60a;
  --blue: #66d9ff;
  --pink: #ff7aa2;
  --mint: #87f58e;
  --max-width: 1120px;
  --border: 4px solid var(--ink);
  --shadow: 8px 8px 0 var(--ink);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(90deg, rgba(17, 17, 17, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(17, 17, 17, 0.045) 1px, transparent 1px);
  background-size: 24px 24px;
  line-height: 1.5;
}

h1,
h2,
h3,
.brand {
  font-family: "Archivo Black", Impact, sans-serif;
  letter-spacing: 0.02em;
  line-height: 1.15;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.1rem, 4.4vw, 4.3rem);
  margin: 0.4rem 0 0.8rem;
}

h2 {
  font-size: clamp(1.35rem, 2.7vw, 2rem);
  margin-top: 0;
}

a {
  color: inherit;
}

.wrap {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--yellow);
  padding: 0.7rem 1rem;
  border: var(--border);
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
  z-index: 1000;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: var(--paper);
  border-bottom: var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  font-size: 1.25rem;
  text-decoration: none;
  border: var(--border);
  box-shadow: 4px 4px 0 var(--ink);
  background: var(--yellow);
  padding: 0.35rem 0.7rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.main-nav a {
  text-decoration: none;
  font-weight: 700;
  border: 3px solid var(--ink);
  background: #ffffff;
  padding: 0.32rem 0.6rem;
  box-shadow: 3px 3px 0 var(--ink);
}

.hero {
  padding-block: 2.8rem 1.6rem;
}

.kicker {
  display: inline-block;
  background: var(--blue);
  border: var(--border);
  box-shadow: 5px 5px 0 var(--ink);
  transform: rotate(-1.4deg);
  padding: 0.45rem 0.8rem;
  font-weight: 700;
  margin: 0;
}

.lead {
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  max-width: 68ch;
  margin-bottom: 1.3rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  border: var(--border);
  padding: 0.72rem 1rem;
  box-shadow: var(--shadow);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translate(3px, 3px);
  box-shadow: 4px 4px 0 var(--ink);
}

.btn-primary {
  background: var(--yellow);
}

.btn-secondary {
  background: #ffffff;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag {
  font-weight: 700;
  font-size: 0.94rem;
  border: 3px solid var(--ink);
  background: #ffffff;
  box-shadow: 3px 3px 0 var(--ink);
  padding: 0.35rem 0.6rem;
}

.block {
  background: #ffffff;
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  margin-block: 1.2rem;
}

.terminal {
  background: #fff;
}

pre {
  margin: 0;
  background: #fff;
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  overflow-x: auto;
}

pre code {
  display: block;
  padding: 0.9rem;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.92rem;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-block: 1.2rem;
}

.card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1rem;
  background: #ffffff;
}

.card:nth-child(3n + 1) {
  background: #fff6d2;
}

.card:nth-child(3n + 2) {
  background: #d9f7ff;
}

.card:nth-child(3n + 3) {
  background: #ffe0ea;
}

.diagram {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.diagram div {
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  background: var(--mint);
  padding: 0.8rem 0.6rem;
  text-align: center;
  font-weight: 700;
}

.note {
  margin-top: 0.8rem;
  font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border: 3px solid var(--ink);
  padding: 0.7rem;
  text-align: left;
}

th {
  background: var(--yellow);
}

td {
  background: #ffffff;
}

.stack-list {
  padding-left: 1rem;
  margin-bottom: 0;
}

.stack-list li {
  margin-bottom: 0.5rem;
}

details {
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  background: #fff;
  padding: 0.65rem 0.8rem;
  margin-bottom: 0.7rem;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

.cta-strip {
  margin-block: 2rem;
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--pink);
  padding: 1.3rem;
}

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

.site-footer {
  border-top: var(--border);
  margin-top: 2rem;
  background: #ffffff;
}

.footer-grid {
  padding: 1rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-grid p {
  margin: 0;
}

.footer-grid a {
  margin-right: 0.9rem;
  font-weight: 700;
}

@media (max-width: 960px) {
  .section-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 700px) {
  body {
    background-size: 20px 20px;
  }

  .site-header {
    position: static;
  }

  .site-header .wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-grid,
  .diagram {
    grid-template-columns: 1fr;
  }

  .btn,
  .main-nav a {
    width: 100%;
    text-align: center;
  }

  .hero-cta {
    width: 100%;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}