.glossary-masthead {
  position: relative;
  overflow: hidden;
  padding-top: clamp(54px, 7vw, 92px);
  padding-bottom: clamp(54px, 7vw, 92px);
  border-bottom: var(--border-heavy) solid var(--color-border);
  background:
    linear-gradient(90deg, var(--color-bg-deep), var(--color-clear)),
    repeating-linear-gradient(
      90deg,
      var(--color-clear) 0,
      var(--color-clear) 82px,
      var(--color-grid) 82px,
      var(--color-grid) 83px
    ),
    var(--color-panel-dark);
}

.glossary-masthead::after {
  position: absolute;
  top: 0;
  right: 7%;
  bottom: 0;
  width: 6px;
  background: repeating-linear-gradient(
    to bottom,
    var(--color-accent) 0,
    var(--color-accent) 18px,
    var(--color-clear) 18px,
    var(--color-clear) 31px
  );
  content: "";
  opacity: 0.55;
}

.glossary-masthead-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.glossary-intro {
  min-width: 0;
}

.glossary-intro h1 {
  max-width: 850px;
  margin-bottom: 25px;
}

.glossary-lead {
  max-width: 760px;
  margin-bottom: 0;
  padding-left: 18px;
  border-left: 6px solid var(--color-accent);
  color: var(--color-text-muted);
  font-size: 17px;
}

.glossary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 29px;
}

.term-map {
  min-width: 0;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel);
  box-shadow: var(--shadow-hard);
}

.term-map-head {
  display: flex;
  min-height: 66px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 17px;
  border-bottom: var(--border-heavy) solid var(--color-border);
  background: var(--color-bg-deep);
}

.term-map-head span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.term-map-head strong {
  font-family: var(--font-display);
  font-size: 18px;
}

.term-flow {
  display: grid;
  margin: 0;
  padding: 14px;
  list-style: none;
}

.term-flow li {
  position: relative;
  display: grid;
  min-width: 0;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 13px;
  align-items: center;
  min-height: 70px;
  padding: 10px 8px;
  border-bottom: var(--border-fine) solid var(--color-border-soft);
}

.term-flow li:last-child {
  border-bottom: 0;
}

.term-flow li:not(:last-child)::after {
  position: absolute;
  bottom: -8px;
  left: 27px;
  z-index: 2;
  width: 13px;
  height: 13px;
  border-right: var(--border-heavy) solid var(--color-accent);
  border-bottom: var(--border-heavy) solid var(--color-accent);
  content: "";
  transform: rotate(45deg);
}

.term-flow-code {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel-dark);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
}

.term-flow strong,
.term-flow small {
  display: block;
}

.term-flow strong {
  margin-bottom: 3px;
  font-size: 14px;
}

.term-flow small {
  font-size: 11px;
  line-height: 1.45;
}

.index-panel {
  display: grid;
  grid-template-columns: minmax(250px, 0.75fr) minmax(0, 1.25fr);
  gap: 28px;
  align-items: end;
  padding: 23px;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel);
  box-shadow: var(--shadow-small);
}

.index-panel-copy h2 {
  margin-bottom: 12px;
  font-size: clamp(27px, 3vw, 38px);
}

.index-panel-copy p {
  margin: 0;
  color: var(--color-text-muted);
}

.glossary-toc {
  position: static;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
}

.glossary-toc a {
  display: flex;
  min-width: 0;
  align-items: center;
  overflow-wrap: anywhere;
}

.term-quick-index {
  display: flex;
  max-width: 100%;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  padding: 10px;
  overflow-x: auto;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-bg-deep);
  box-shadow: var(--shadow-small);
}

.term-quick-index span {
  flex: 0 0 auto;
  padding-inline: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.term-quick-index a {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border: var(--border-heavy) solid var(--color-border-soft);
  background: var(--color-panel);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.term-quick-index a:hover {
  border-color: var(--color-accent);
  background: var(--color-panel-2);
  color: var(--color-accent);
}

.glossary-section {
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.glossary-section-alt {
  border-top: var(--border-heavy) solid var(--color-border);
  border-bottom: var(--border-heavy) solid var(--color-border);
  background: var(--color-bg-deep);
}

.glossary-section-heading h2 {
  margin-bottom: 0;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.glossary-grid .glossary-card {
  min-height: 245px;
  scroll-margin-top: calc(var(--header-height) + 25px);
  transition:
    transform var(--motion-fast) ease,
    border-color var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease;
}

.glossary-grid .glossary-card:hover {
  transform: translate(-3px, -3px);
  border-color: var(--color-text);
  box-shadow: var(--shadow-hard);
}

.glossary-grid .term-body {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
}

.glossary-grid .term-body h3 {
  position: relative;
  margin-bottom: 15px;
  padding-bottom: 12px;
}

.glossary-grid .term-body h3::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 46px;
  height: 4px;
  background: var(--color-accent);
  box-shadow: 4px 4px 0 var(--color-accent-dark);
  content: "";
}

.glossary-grid .term-body p {
  line-height: 1.78;
}

.rule-order-panel {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  margin-top: 28px;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel-dark);
  box-shadow: var(--shadow-small);
}

.rule-order-head {
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 22px;
  border-right: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel);
}

.rule-order-head span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.rule-order-head strong {
  font-family: var(--font-display);
  font-size: 21px;
}

.rule-order-panel ol {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rule-order-panel li {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(145px, 0.45fr) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 12px 17px;
  border-bottom: var(--border-fine) solid var(--color-border-soft);
}

.rule-order-panel li:last-child {
  border-bottom: 0;
}

.rule-order-panel code {
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 800;
}

.rule-order-panel span {
  color: var(--color-text-muted);
  font-size: 13px;
}

.dns-path {
  margin-top: 28px;
  padding: 15px;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel-dark);
  box-shadow: var(--shadow-small);
}

.dns-path-label {
  display: block;
  margin-bottom: 12px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.dns-path-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
}

.dns-path-steps span {
  position: relative;
  display: grid;
  min-height: 60px;
  place-items: center;
  padding: 9px;
  border: var(--border-heavy) solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-text);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}

.dns-path-steps span:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -16px;
  width: 10px;
  border-top: var(--border-heavy) solid var(--color-accent);
  content: "";
}

.lookup-method {
  display: grid;
  grid-template-columns: minmax(210px, 0.65fr) minmax(0, 1.35fr);
  gap: 26px 34px;
  align-items: start;
  border-color: var(--color-accent);
  box-shadow: 9px 9px 0 var(--color-accent-dark);
}

.lookup-method h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 3.5vw, 42px);
}

.lookup-method-copy {
  color: var(--color-text-muted);
}

.lookup-method-copy p:last-child {
  margin-bottom: 0;
}

.lookup-method-actions {
  display: flex;
  grid-column: 1 / -1;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 18px;
  border-top: var(--border-fine) solid var(--color-border-soft);
}

@media (max-width: 900px) {
  .glossary-masthead-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .term-map {
    max-width: 620px;
  }

  .index-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .glossary-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .glossary-grid .glossary-card {
    min-height: 0;
  }

  .dns-path-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .dns-path-steps span::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .glossary-masthead::after {
    right: 8px;
  }

  .glossary-lead {
    padding-left: 13px;
    font-size: 15px;
  }

  .glossary-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .term-map-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .index-panel {
    padding: 17px;
  }

  .glossary-toc {
    grid-template-columns: minmax(0, 1fr);
  }

  .glossary-card {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .glossary-grid .term-body {
    padding: 17px;
  }

  .rule-order-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .rule-order-head {
    border-right: 0;
    border-bottom: var(--border-heavy) solid var(--color-border);
  }

  .rule-order-panel li {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }

  .dns-path-steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 9px;
  }

  .lookup-method {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .lookup-method-actions {
    grid-column: auto;
  }
}