:root {
  --ink: #0b1220;
  --ink-2: #0f172a;
  --ink-3: #182338;
  --bone: #ece1cb;
  --text: #d8e0ec;
  --mute: #a8b5c8;
  --mint: #5eead4;
  --ghost: #a78bfa;
  --line: rgba(148, 163, 184, 0.22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 4%, rgba(94, 234, 212, 0.09), transparent 30rem),
    radial-gradient(circle at 88% 18%, rgba(167, 139, 250, 0.09), transparent 32rem),
    var(--ink);
  color: var(--text);
  font-family: Inter, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
img { max-width: 100%; }
.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  border-radius: 0.5rem;
  background: var(--mint);
  color: var(--ink);
  font-weight: 800;
}
.skip-link:focus { top: 1rem; }
.shell { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 18, 32, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav {
  min-height: 4.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
}
.brand img { display: block; width: auto; height: 2.5rem; }
.nav-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1.15rem; }
.nav-links a { color: var(--mute); text-decoration: none; font-weight: 700; font-size: 0.92rem; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--bone); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(94, 234, 212, 0.45);
  border-radius: 0.75rem;
  padding: 0.8rem 1.1rem;
  background: linear-gradient(135deg, #0d9488, #2563eb);
  color: white;
  font-weight: 850;
  text-decoration: none;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.18);
}
.button.secondary {
  background: rgba(15, 23, 42, 0.75);
  border-color: var(--line);
  color: var(--bone);
  box-shadow: none;
}
.hero { padding: clamp(5rem, 10vw, 8.5rem) 0 4.5rem; }
.eyebrow {
  color: var(--mint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1, h2, h3 { color: var(--bone); line-height: 1.08; letter-spacing: -0.035em; }
h1 { margin: 1rem 0 1.4rem; max-width: 920px; font-size: clamp(2.7rem, 7vw, 5.7rem); }
h2 { margin: 0 0 1.1rem; font-size: clamp(2rem, 4.5vw, 3.55rem); }
h3 { margin: 0 0 0.75rem; font-size: 1.35rem; }
.accent { color: var(--ghost); font-family: "Instrument Serif", Georgia, serif; font-style: italic; font-weight: 400; }
.lead { max-width: 780px; color: var(--mute); font-size: clamp(1.1rem, 2vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 2rem; }
.proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}
.proof li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  color: var(--mute);
  background: rgba(15, 23, 42, 0.62);
  font-size: 0.88rem;
}
.section { padding: 4.5rem 0; border-top: 1px solid var(--line); }
.section-intro { max-width: 760px; margin-bottom: 2rem; color: var(--mute); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.4rem;
  background: linear-gradient(145deg, rgba(24, 35, 56, 0.9), rgba(15, 23, 42, 0.82));
}
.card p, .card li { color: var(--mute); }
.card p:last-child { margin-bottom: 0; }
.checklist { margin: 0; padding-left: 1.2rem; }
.checklist li { margin: 0.65rem 0; }
.steps { counter-reset: step; list-style: none; padding: 0; display: grid; gap: 1rem; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.3rem 1fr;
  gap: 0.85rem;
  align-items: start;
}
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  border: 1px solid rgba(94, 234, 212, 0.45);
  border-radius: 50%;
  color: var(--mint);
  font-family: "JetBrains Mono", monospace;
}
.comparison { width: 100%; border-collapse: collapse; overflow: hidden; }
.comparison th, .comparison td { border-bottom: 1px solid var(--line); padding: 1rem; text-align: left; vertical-align: top; }
.comparison thead th { color: var(--bone); }
.comparison tbody th { color: var(--text); }
.comparison td { color: var(--mute); }
.note {
  border-left: 3px solid var(--ghost);
  padding: 1rem 1.2rem;
  background: rgba(167, 139, 250, 0.08);
  color: var(--mute);
}
.toc { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1.5rem; }
.toc a { color: var(--mint); text-decoration: none; border-bottom: 1px solid rgba(94, 234, 212, 0.35); }
.language-list { columns: 4 10rem; margin: 0; padding-left: 1.25rem; color: var(--mute); }
.language-list li { break-inside: avoid; margin: 0.25rem 0; }
.resource-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.resource-list a { text-decoration: none; }
.resource-list a:hover h2, .resource-list a:focus-visible h2 { color: var(--mint); }
.resource-list h2 { font-size: 1.45rem; }
.meta { color: var(--mute); font-size: 0.88rem; }
.cta { padding: 4rem 0; text-align: center; border-top: 1px solid var(--line); }
.cta p { max-width: 680px; margin-inline: auto; color: var(--mute); }
.site-footer { border-top: 1px solid var(--line); padding: 2rem 0; color: var(--mute); font-size: 0.9rem; }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-links a { color: var(--mute); }
.footer-links a:hover, .footer-links a:focus-visible { color: var(--bone); }
.polish-flag {
  display: inline-block;
  width: 1.2em;
  height: 0.75em;
  margin-left: 0.22em;
  vertical-align: -0.08em;
  border-radius: 0.08em;
  background: linear-gradient(to bottom, #fff 0 50%, #dc143c 50% 100%);
}
code { color: var(--mint); }

@media (max-width: 820px) {
  .nav { align-items: flex-start; padding: 1rem 0; }
  .nav-links { justify-content: flex-end; }
  .grid, .grid.two, .resource-list { grid-template-columns: 1fr; }
  .language-list { columns: 2; }
}

@media (max-width: 560px) {
  .nav { display: block; }
  .brand img { height: 2.125rem; }
  .nav-links { margin-top: 0.8rem; justify-content: flex-start; gap: 0.75rem; }
  .nav-links .button { padding: 0.55rem 0.75rem; }
  .hero { padding-top: 4rem; }
  .language-list { columns: 1; }
  .comparison { font-size: 0.84rem; }
  .comparison th, .comparison td { padding: 0.7rem 0.5rem; }
}