/* Neravo Systems — one stylesheet, no external requests.
   No web fonts, no analytics, no third-party anything: every byte this site
   serves comes from this origin. */

:root {
  color-scheme: light dark;

  --ink:        #14171c;
  --ink-soft:   #454c57;
  --ink-faint:  #6b7480;
  --rule:       #e0e4ea;
  --surface:    #ffffff;
  --surface-2:  #f6f8fa;
  --accent:     #1f6b7d;
  --accent-ink: #16505e;

  --measure: 40rem;
  --pad: clamp(1.25rem, 5vw, 2.5rem);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink:        #e7eaee;
    --ink-soft:   #a8b1bd;
    --ink-faint:  #7c8695;
    --rule:       #262b33;
    --surface:    #101319;
    --surface-2:  #161a21;
    --accent:     #6fb9c9;
    --accent-ink: #8fcedc;
  }
}

:root[data-theme="dark"] {
  --ink:        #e7eaee;
  --ink-soft:   #a8b1bd;
  --ink-faint:  #7c8695;
  --rule:       #262b33;
  --surface:    #101319;
  --surface-2:  #161a21;
  --accent:     #6fb9c9;
  --accent-ink: #8fcedc;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ---- header ---- */

.site-head {
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}

.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
  padding-block: 1.25rem;
}

.wordmark {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.wordmark span { color: var(--ink-faint); font-weight: 400; }

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9375rem;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.site-nav a:hover,
.site-nav a:focus-visible { color: var(--accent-ink); border-bottom-color: currentColor; }

.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--rule); }

/* ---- content ---- */

main { padding-block: clamp(2.5rem, 8vw, 4.5rem) clamp(3rem, 10vw, 5rem); }

h1 {
  font-size: clamp(1.75rem, 5vw, 2.375rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  text-wrap: balance;
}

.lede {
  font-size: clamp(1.0625rem, 2.5vw, 1.1875rem);
  color: var(--ink-soft);
  margin: 0 0 2.5rem;
  text-wrap: pretty;
}

h2 {
  font-size: 1.0625rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 600;
  margin: 2.75rem 0 0.75rem;
}

h3 {
  font-size: 1.0625rem;
  margin: 1.75rem 0 0.5rem;
  letter-spacing: -0.01em;
}

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

strong { color: var(--ink); font-weight: 600; }

ul { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin-bottom: 0.5rem; }

a { color: var(--accent-ink); }
a:hover { text-decoration-thickness: 2px; }

.meta {
  font-size: 0.875rem;
  color: var(--ink-faint);
  margin-bottom: 2.5rem;
}

.callout {
  background: var(--surface-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.callout p:last-child { margin-bottom: 0; }

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3rem 0;
}

/* ---- footer ---- */

.site-foot {
  border-top: 1px solid var(--rule);
  padding-block: 1.75rem 2.5rem;
  font-size: 0.875rem;
  color: var(--ink-faint);
}

.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

.site-foot a { color: var(--ink-faint); }
.site-foot a:hover { color: var(--accent-ink); }

/* ---- accessibility ---- */

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: var(--pad);
  top: 0.5rem;
  z-index: 10;
  background: var(--surface);
  color: var(--ink);
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
}