.skip-link {
  position: absolute;
  left: 24px;
  top: 16px;
  padding: 10px 16px;
  background: #f7f3ea;
  color: #162d43;
  transform: translateY(-180%);
  z-index: 1;
}

.skip-link:focus { transform: translateY(0); }

.brand-home { display: block; }
.brand-home:focus-visible,
.technical-note a:focus-visible,
.skip-link:focus-visible {
  outline: 2px solid #162d43;
  outline-offset: 5px;
}

.technical-note a {
  color: #162d43;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.technical-note a:hover { color: #325875; }

.technical-breadcrumb {
  margin-bottom: 48px;
  font-family: "Jost", "Avenir Next", Avenir, sans-serif;
  font-size: 18px;
  line-height: 1.5;
}

.technical-breadcrumb a { display: inline-block; padding-block: 8px; }

.technical-note .technical-label {
  margin: 0 0 14px;
  color: #626963;
  font-family: "Jost", "Avenir Next", Avenir, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.technical-header h1 {
  max-width: none;
  margin: 0 0 32px;
  color: #162d43;
  font-family: "Jost", "Avenir Next", Avenir, sans-serif;
  font-size: clamp(36px, 4.2vw, 54px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.028em;
  text-wrap: balance;
}

.technical-contents {
  margin-top: 48px;
  padding-block: 28px;
  border-top: 1px solid #d2cec4;
  border-bottom: 1px solid #d2cec4;
  font-family: "Jost", "Avenir Next", Avenir, sans-serif;
  font-size: 20px;
  line-height: 1.5;
}

.technical-contents h2 {
  margin: 0 0 16px;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.technical-contents ol { margin: 0; padding-left: 1.45em; }
.technical-contents li::marker { color: #626963; }
.technical-contents a { display: inline-block; padding: 8px 0; }

.technical-section { margin-top: 80px; }
.technical-section h2 {
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.022em;
}

.technical-note [id] { scroll-margin-top: 24px; }

.technical-footer {
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid #d2cec4;
  font-family: "Jost", "Avenir Next", Avenir, sans-serif;
  font-size: 18px;
  line-height: 1.5;
}

.technical-footer nav { display: grid; gap: 8px; justify-items: start; }
.technical-footer a { padding-block: 8px; }

@media (max-width: 700px) {
  .technical-breadcrumb { margin-bottom: 32px; }
  .technical-contents { margin-top: 36px; font-size: 19px; }
  .technical-section,
  .technical-footer { margin-top: 56px; }
}

@media print {
  :root { background: white; }
  .masthead, .skip-link, .technical-breadcrumb, .technical-contents, .technical-footer { display: none; }
  .technical-note { padding: 0; font-size: 11pt; line-height: 1.5; }
  .technical-header h1 { font-size: 24pt; }
  .technical-note .technical-label { font-size: 10pt; }
  .technical-section { margin-top: 28pt; }
  .technical-section h2 { font-size: 17pt; break-after: avoid; }
  .technical-note .reading-column { max-width: none; }
  .technical-note .math-display { overflow: visible; break-inside: avoid; }
  .technical-note a { color: inherit; text-decoration: none; }
}