:root {
  --canvas: #F8F9FA;
  --table: #FFFFFF;
  --ink: #1E293B;
  --blue: #0284C7;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: Arial, sans-serif;
  font-size: 15px;
  line-height: 1.52;
}

a {
  color: inherit;
  text-decoration-color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible { color: var(--blue); }

.page-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.technical-bar {
  border-top: 5px solid var(--blue);
  border-bottom: 1px solid var(--ink);
  background: var(--table);
}

.identity-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 9px 0;
  border-bottom: 1px solid var(--ink);
  font-family: Arial, sans-serif;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.wordmark {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.separator { color: var(--ink); }

.header-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 326px;
  gap: 28px;
  padding: 26px 0 24px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--blue);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .09em;
  line-height: 1.2;
}

h1, h2, h3 {
  margin: 0;
  font-family: Arial, sans-serif;
  font-weight: 700;
  letter-spacing: -.02em;
}

h1 {
  max-width: 760px;
  font-size: clamp(29px, 4vw, 48px);
  line-height: 1.04;
}

h2 { font-size: 22px; line-height: 1.15; }
h3 { font-size: 14px; line-height: 1.2; }

.intro {
  max-width: 770px;
  margin: 17px 0 0;
}

.dispatch-line {
  margin: 16px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--ink);
  font-family: Arial, sans-serif;
  font-size: 13px;
}

.reference-sheet {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-content: start;
}

.reference-sheet figure { margin: 0; }

.reference-sheet img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--ink);
}

.reference-sheet figcaption {
  padding-top: 5px;
  font-family: Arial, sans-serif;
  font-size: 10px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.section { border-bottom: 1px solid var(--ink); }
.process-section, .boundary-section, .contact-section { padding: 28px 0; }
.table-section { padding: 28px 0 0; }

.section-heading { margin-bottom: 16px; }

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
  background: var(--table);
}

.process-grid > div {
  min-width: 0;
  padding: 12px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.process-grid dt,
.contact-data dt {
  margin-bottom: 7px;
  color: var(--blue);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.process-grid dd,
.contact-data dd { margin: 0; }

.table-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
}

.table-note {
  max-width: 340px;
  margin: 0;
  font-size: 13px;
  text-align: right;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ink);
  border-bottom: 0;
  background: var(--table);
}

.spec-table {
  width: 100%;
  min-width: 810px;
  border-collapse: collapse;
  font-size: 13px;
}

.spec-table th {
  padding: 9px 12px;
  background: var(--blue);
  color: var(--table);
  border-right: 1px solid var(--table);
  font-family: Arial, sans-serif;
  font-size: 11px;
  letter-spacing: .05em;
  line-height: 1.2;
  text-align: left;
  text-transform: uppercase;
}

.spec-table th:last-child { border-right: 0; }

.spec-table td {
  padding: 10px 12px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  vertical-align: top;
}

.spec-table td:last-child { border-right: 0; }
.spec-table tbody tr:nth-child(even) { background: var(--canvas); }
.spec-table td:nth-child(1) { width: 13%; }
.spec-table td:nth-child(2) { width: 24%; font-weight: 700; }
.spec-table td:nth-child(3) { width: 45%; }
.spec-table td:nth-child(4) { width: 18%; }

.code {
  color: var(--blue);
  font-family: Arial, sans-serif;
  font-weight: 700;
  white-space: nowrap;
}

.boundary-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 28px;
}

.boundary-copy {
  padding-left: 18px;
  border-left: 3px solid var(--blue);
}

.boundary-copy p { margin: 0 0 12px; }
.boundary-copy p:last-child { margin-bottom: 0; }

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  border: 1px solid var(--ink);
  background: var(--table);
}

.contact-data {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
}

.contact-data > div {
  min-height: 92px;
  padding: 13px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.contact-data > div:nth-last-child(-n+2) { border-bottom: 0; }
.contact-data > div:nth-child(even) { border-right: 0; }

.letter-close {
  padding: 16px 18px;
  background: var(--canvas);
}

.letter-close p { margin: 0; }
.signature { margin-top: 18px !important; font-weight: 700; }

.privacy-rule {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--ink);
  font-size: 12px;
}

.privacy-rule h3 { margin-bottom: 6px; }
.privacy-rule p { max-width: 850px; margin: 0; }

@media (max-width: 820px) {
  .header-grid,
  .boundary-layout,
  .contact-grid { grid-template-columns: 1fr; }

  .reference-sheet { max-width: 420px; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .table-heading { display: block; }
  .table-note { margin-top: 9px; text-align: left; }
  .letter-close { border-top: 1px solid var(--ink); }
}

@media (max-width: 520px) {
  .page-shell { width: min(100% - 24px, 1160px); }
  .identity-row { font-size: 10px; }
  .header-grid { padding: 20px 0; }
  .process-grid { grid-template-columns: 1fr; }
  .contact-data { grid-template-columns: 1fr; }
  .contact-data > div,
  .contact-data > div:nth-child(even) { border-right: 0; border-bottom: 1px solid var(--ink); }
  .contact-data > div:last-child { border-bottom: 0; }
}