/* Pay Brief — tractor-feed continuous form / statistical processing plant
   Cold blue-gray paper, left sprocket margin, BATCH PB-10 stamp.
   Distinct from Pay Census binder-hole yellow/blue and Renta Mesa teal desk. */

:root {
  color-scheme: light;
  --paper: #E6EBF0;
  --ink: #0E1A28;
  --muted: #5A6A7A;
  --steel: #3D6B8A;
  --batch: #3F4C8A;
  --rule: #C5CDD6;
  --sheet: #F7F9FB;
  --display: "Bricolage Grotesque", "Arial Narrow", sans-serif;
  --text: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --shell: 68rem;
  --gutter: clamp(1.15rem, 4vw, 2.75rem);
  --band: clamp(2.6rem, 5.5vw, 4.75rem);
  --sprocket: 2.1rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 28px,
      rgba(197, 205, 214, 0.35) 28px 29px
    ),
    linear-gradient(90deg, #D8DEE6 0, #D8DEE6 var(--sprocket), transparent var(--sprocket)),
    var(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-size: clamp(1.05rem, 1rem + 0.22vw, 1.16rem);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  padding-left: var(--sprocket);
  position: relative;
}

/* Tractor-feed sprocket holes — left margin signature */
body::before {
  content: "";
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sprocket);
  z-index: 30;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 10px, #F7F9FB 0 4px, transparent 4.5px) 0 0 / 100% 28px,
    linear-gradient(90deg, #C9D1DA, #B8C2CE);
  box-shadow: inset -1px 0 0 var(--rule);
}

.skip {
  position: absolute; left: -9999px;
  background: var(--ink); color: #fff; padding: 0.7rem 1rem; z-index: 50;
}
.skip:focus { left: calc(var(--sprocket) + 0.5rem); top: 0.75rem; }
:focus-visible { outline: 3px solid var(--steel); outline-offset: 3px; }

.shell {
  width: 100%; max-width: var(--shell);
  margin-inline: auto; padding-inline: var(--gutter);
}

.top {
  background: var(--sheet);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.top__row {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 0.75rem;
  padding-block: 0.9rem 0.4rem;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--display); font-weight: 700;
  font-size: 1.35rem; letter-spacing: -0.02em;
  color: var(--ink); text-decoration: none;
}
.brand__mark {
  width: 1.15rem; height: 1.35rem;
  border: 1.5px solid var(--steel);
  background:
    radial-gradient(circle at 50% 22%, var(--sheet) 0 2px, transparent 2.2px),
    radial-gradient(circle at 50% 50%, var(--sheet) 0 2px, transparent 2.2px),
    radial-gradient(circle at 50% 78%, var(--sheet) 0 2px, transparent 2.2px),
    var(--steel);
  display: inline-block;
  flex-shrink: 0;
}
.top__meta {
  font-family: var(--mono); font-size: 0.7rem;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted);
}
.nav {
  display: flex; flex-wrap: wrap; gap: 0.35rem 1.5rem;
  padding-block: 0.35rem 0.85rem;
  border-top: 1px dashed var(--rule);
}
.nav a {
  font-family: var(--display); font-weight: 600; font-size: 0.92rem;
  letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--muted); text-decoration: none;
  border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current] { color: var(--ink); border-bottom-color: var(--batch); }

/* BATCH PB-10 stamp */
.stamp {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 500; font-size: 0.68rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--batch);
  border: 2px solid var(--batch);
  padding: 0.35rem 0.55rem;
  transform: rotate(-8deg);
  opacity: 0.92;
  user-select: none;
}
.stamp--hero {
  position: absolute;
  right: max(1rem, calc((100% - var(--shell)) / 2));
  top: 1.25rem;
  font-size: 0.78rem;
  padding: 0.5rem 0.7rem;
  z-index: 3;
  animation: stamp-in 0.7s ease-out both;
}
@keyframes stamp-in {
  from { opacity: 0; transform: rotate(-8deg) scale(1.15); }
  to { opacity: 0.92; transform: rotate(-8deg) scale(1); }
}

h1, h2, h3 {
  font-family: var(--display); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.08; margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(1.85rem, 1.15rem + 2.4vw, 3.1rem); }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2.05rem); margin-block: 0.25rem 0.85rem; }
h3 { font-size: clamp(1.12rem, 1.02rem + 0.5vw, 1.35rem); line-height: 1.22; }
p { margin-block: 0 1rem; }
p:last-child { margin-bottom: 0; }
a { color: var(--steel); text-underline-offset: 0.18em; }
a:hover { color: var(--ink); }

.eyebrow {
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--steel); margin: 0 0 0.5rem;
}

/* Hero: continuous form atmosphere */
.hero {
  position: relative; isolation: isolate;
  min-height: min(90vh, 48rem);
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 31px,
      rgba(61, 107, 138, 0.07) 31px 32px
    ),
    linear-gradient(180deg, var(--sheet) 0%, var(--paper) 72%, #D9E0E8 100%);
  overflow: hidden;
  display: grid; align-items: end;
  padding-block: clamp(3rem, 8vw, 5.5rem) clamp(2.4rem, 5vw, 3.8rem);
  border-bottom: 2px solid var(--rule);
}
.hero__feed {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 70% 20%, rgba(63, 76, 138, 0.06), transparent 55%),
    repeating-linear-gradient(
      90deg,
      transparent 0 72px,
      rgba(197, 205, 214, 0.45) 72px 73px
    );
}
.hero__perf {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1.4rem;
  z-index: 1;
  background:
    radial-gradient(circle at 50% 14px, var(--sheet) 0 5px, transparent 5.5px) 0 0 / 100% 32px;
  opacity: 0.85;
  border-right: 1px solid var(--rule);
}
.hero__content {
  position: relative; z-index: 2; max-width: min(38rem, 100%);
}
.hero__brand {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(2.8rem, 1.5rem + 7vw, 6.4rem);
  line-height: 0.88; letter-spacing: -0.045em;
  margin: 0 0 1.1rem; color: var(--ink);
  animation: brand-rise 0.85s ease-out both;
}
@keyframes brand-rise {
  from { opacity: 0; transform: translateY(0.6rem); }
  to { opacity: 1; transform: translateY(0); }
}
.hero h1 {
  font-size: clamp(1.2rem, 1.02rem + 1vw, 1.7rem);
  font-weight: 650; color: var(--muted); max-width: 28ch; margin-bottom: 1rem;
}
.hero__stand {
  max-width: 38ch; margin: 0; padding-top: 0.9rem;
  border-top: 2px solid var(--batch); color: var(--ink);
  font-size: clamp(1.02rem, 1rem + 0.28vw, 1.15rem);
}

.block { padding-block: var(--band); }
.block--batch {
  background: var(--ink); color: #D5DEE8;
  border-block: 3px solid var(--batch);
}
.block--batch a { color: #9BB8D0; }
.block--batch h2 { color: #fff; }
.block--batch p, .block--batch dd { color: #A8B6C4; }
.block--batch .eyebrow { color: #9BB0D0; }
.block--tint {
  background: var(--sheet);
  border-block: 1px solid var(--rule);
}
.block > .shell > p { max-width: 54ch; color: var(--muted); }

.lede {
  display: grid; gap: 1.2rem 2rem; margin-top: 1rem;
}
@media (min-width: 52rem) { .lede { grid-template-columns: 1fr 1fr 1fr; } }
.lede p {
  margin: 0; padding-top: 0.7rem;
  border-top: 2px solid var(--ink);
  color: var(--muted);
}

.library {
  display: grid; gap: 0; margin-top: 1.5rem;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  background: var(--sheet);
}
.entry {
  display: grid; gap: 0.55rem 1.2rem;
  padding: clamp(1.05rem, 2.2vw, 1.45rem) 0;
  border-bottom: 1px solid var(--rule);
}
.entry:last-child { border-bottom: 0; }
.entry:hover { background: color-mix(in srgb, var(--steel) 5%, var(--sheet)); }
.entry__id {
  font-family: var(--mono); font-size: 0.72rem; color: var(--batch);
  letter-spacing: 0.08em; margin: 0; text-transform: uppercase;
}
.entry h3 a {
  text-decoration: none; color: var(--ink);
  font-family: var(--display); font-weight: 700;
}
.entry h3 a:hover { color: var(--steel); text-decoration: underline; }
.entry p { margin: 0; color: var(--muted); font-size: 0.98rem; }
@media (min-width: 48rem) {
  .entry {
    grid-template-columns: 6.5rem 1fr;
    align-items: start;
    padding-inline: 0.25rem;
  }
}

.standards { list-style: none; margin: 1.2rem 0 0; padding: 0; display: grid; gap: 0.65rem; }
.standards li {
  background: var(--sheet);
  border-bottom: 1px solid var(--rule);
  border-left: 4px solid var(--steel);
  padding: 0.9rem 1.05rem; color: var(--muted);
}
.standards strong {
  display: block; font-family: var(--display); font-size: 1.08rem;
  color: var(--ink); margin-bottom: 0.12rem;
}

.defs { margin: 1.1rem 0 0; }
.defs dt {
  font-family: var(--display); font-weight: 700; font-size: 1.12rem;
  padding-top: 0.85rem; border-top: 1px solid var(--rule);
}
.defs dt:first-of-type { border-top: 2px solid var(--ink); }
.defs dd { margin: 0.28rem 0 0.9rem; color: var(--muted); max-width: 68ch; }
.block--batch .defs dt { border-top-color: rgba(197, 205, 214, 0.25); color: #fff; }
.block--batch .defs dt:first-of-type { border-top-color: var(--batch); }

.flag {
  margin-top: 1.4rem; background: var(--sheet); color: var(--ink);
  padding: 1rem 1.1rem; border: 1px solid var(--rule);
  border-left: 5px solid var(--batch);
}
.flag p { color: var(--muted); font-size: 0.95rem; }
.block--batch .flag {
  background: rgba(247, 249, 251, 0.08);
  border-color: rgba(197, 205, 214, 0.3);
  border-left-color: var(--batch);
}
.block--batch .flag p { color: #B8C4D0; }

.prose { max-width: 68ch; }
.prose p, .prose li { color: var(--muted); }
.prose h2 { margin-top: 2rem; }
.prose h3 { margin-top: 1.5rem; margin-bottom: 0.4rem; }
.prose ul, .prose ol { padding-left: 1.15rem; }

.article__head {
  padding-block: clamp(2.3rem, 5.5vw, 3.6rem) 1.15rem;
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 31px,
      rgba(61, 107, 138, 0.05) 31px 32px
    ),
    var(--sheet);
  border-bottom: 2px solid var(--rule);
  position: relative;
}
.article__meta {
  display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem;
  margin-top: 0.85rem; font-family: var(--mono); font-size: 0.76rem; color: var(--muted);
}
.article__meta b { color: var(--steel); }
.sources {
  margin-top: 2rem; border-top: 2px solid var(--ink); padding-top: 1.1rem;
  font-size: 0.9rem; color: var(--muted);
}
.backlink {
  display: inline-block; margin-top: 1.5rem;
  font-family: var(--display); font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase; font-size: 0.92rem;
}

.foot {
  background: var(--sheet);
  color: var(--muted);
  padding-block: clamp(1.7rem, 4vw, 2.6rem);
  border-top: 2px solid var(--ink);
}
.foot__nav {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem;
  padding-bottom: 1rem; border-bottom: 1px dashed var(--rule);
}
.foot__nav a {
  font-family: var(--display); font-weight: 700; font-size: 0.9rem;
  letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
}
.foot__nav a:hover { color: var(--steel); }
.foot__note { margin-top: 1rem; font-size: 0.8rem; line-height: 1.55; max-width: 78ch; }
.foot__note a { color: var(--steel); }
.foot__stamp { margin-top: 1rem; }

.void { padding-block: clamp(3.5rem, 9vw, 7rem); }

@media (max-width: 40rem) {
  .stamp--hero { position: relative; right: auto; top: auto; margin: 0 0 1.25rem; display: inline-flex; }
  .hero { align-items: start; }
}

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