:root {
  --nk-bg: #020607;
  --nk-panel: rgba(3, 12, 14, 0.94);
  --nk-panel-soft: rgba(5, 17, 20, 0.76);
  --nk-cyan: #5be3ff;
  --nk-cyan-soft: #b9f5ff;
  --nk-cyan-dim: rgba(91, 227, 255, 0.18);
  --nk-green: #8ee89e;
  --nk-amber: #e5bd72;
  --nk-amber-soft: #f2d69d;
  --nk-muted: #779296;
  --nk-text: #d4e7ea;
  --nk-border: rgba(91, 227, 255, 0.19);
  --nk-grid: rgba(91, 227, 255, 0.04);
}

body[data-observer-id="north-korea-connectivity"] {
  background:
    radial-gradient(circle at 72% -12%, rgba(91, 227, 255, 0.075), transparent 34rem),
    radial-gradient(circle at 16% 28%, rgba(91, 227, 255, 0.035), transparent 28rem),
    var(--nk-bg);
  color: var(--nk-text);
}

body[data-observer-id="north-korea-connectivity"] .content {
  max-width: 1480px;
}

.nk-page {
  min-height: 100vh;
}

.nk-topbar {
  align-items: flex-start;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin: 1.7rem 0 1.45rem;
}

.nk-identity {
  display: grid;
  gap: 0.72rem;
}

.nk-compact-title {
  color: var(--nk-cyan);
  font-size: clamp(0.68rem, 1.5vw, 0.86rem);
  font-weight: 400;
  letter-spacing: clamp(0.12em, 0.9vw, 0.34em);
  line-height: 1.45;
  margin: 0;
  text-transform: uppercase;
}

.nk-back {
  border: 1px solid rgba(91, 227, 255, 0.24);
  color: var(--nk-cyan);
  display: inline-block;
  font-size: 0.67rem;
  letter-spacing: 0.06em;
  padding: 0.42rem 0.64rem;
  text-decoration: none;
  text-transform: uppercase;
  width: fit-content;
}

.nk-back:hover,
.nk-back:focus-visible {
  background: rgba(91, 227, 255, 0.07);
  border-color: rgba(91, 227, 255, 0.58);
}

.nk-language {
  align-items: center;
  background: rgba(3, 10, 12, 0.9);
  border: 1px solid rgba(91, 227, 255, 0.22);
  display: inline-flex;
  font-size: 0.66rem;
  gap: 0.48rem;
  letter-spacing: 0.08em;
  padding: 0.38rem 0.58rem;
}

.nk-language a {
  color: var(--nk-muted);
  text-decoration: none;
}

.nk-language a[aria-current="page"] {
  color: var(--nk-cyan);
}

.nk-language a:hover,
.nk-language a:focus-visible {
  color: var(--nk-cyan-soft);
}

.nk-loading {
  border-left: 2px solid var(--nk-cyan);
  color: var(--nk-muted);
  margin: 2rem 0;
  padding: 0.7rem 0.9rem;
}

.nk-shell {
  display: grid;
  gap: 1.4rem;
}

.nk-section {
  background:
    linear-gradient(180deg, rgba(91, 227, 255, 0.018), transparent 42%),
    var(--nk-panel);
  border: 1px solid var(--nk-border);
  position: relative;
}

.nk-section::before {
  background: linear-gradient(90deg, var(--nk-cyan), transparent 72%);
  content: "";
  height: 1px;
  left: 0;
  opacity: 0.68;
  position: absolute;
  top: -1px;
  width: min(360px, 43%);
}

.nk-section-inner {
  padding: clamp(1rem, 2.5vw, 1.7rem);
}

.nk-section-head {
  align-items: end;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.nk-section-index {
  color: var(--nk-cyan);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nk-section-head h2 {
  color: var(--nk-cyan-soft);
  font-size: clamp(1.12rem, 2.1vw, 1.55rem);
  font-weight: 400;
  letter-spacing: 0.035em;
  margin: 0.22rem 0 0;
}

.nk-section-head p {
  color: var(--nk-muted);
  font-size: 0.62rem;
  line-height: 1.55;
  margin: 0;
  max-width: 52ch;
  text-align: right;
}

.nk-current-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(230px, 0.67fr) minmax(0, 2.2fr);
}

.nk-readout {
  background:
    repeating-linear-gradient(0deg, transparent 0 27px, rgba(91, 227, 255, 0.025) 27px 28px),
    rgba(2, 8, 9, 0.88);
  border: 1px solid rgba(91, 227, 255, 0.15);
  display: grid;
  min-height: 348px;
  padding: 1rem;
}

.nk-count-block {
  align-content: center;
  border-bottom: 1px solid rgba(91, 227, 255, 0.11);
  display: grid;
  min-height: 132px;
  padding: 0.35rem 0.4rem;
}

.nk-count-block > span,
.nk-count-block small {
  color: var(--nk-muted);
  font-size: 0.58rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.nk-count-block strong {
  color: #e3fbff;
  font-size: clamp(3.4rem, 7vw, 6rem);
  font-weight: 300;
  letter-spacing: -0.065em;
  line-height: 0.88;
  margin: 0.5rem 0 0.45rem;
  text-shadow: 0 0 26px rgba(91, 227, 255, 0.18);
}

.nk-count-block.is-icmp strong {
  color: var(--nk-cyan-soft);
  font-size: clamp(2.6rem, 5.2vw, 4.35rem);
}

.nk-updated {
  align-self: end;
  color: #9db5b9;
  font-size: 0.62rem;
  line-height: 1.55;
  margin: 0;
  padding: 0.7rem 0.4rem 0.2rem;
}

.nk-probe-console {
  background:
    linear-gradient(var(--nk-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--nk-grid) 1px, transparent 1px),
    #020809;
  background-size: 38px 38px;
  border: 1px solid rgba(91, 227, 255, 0.15);
  min-height: 348px;
  overflow: hidden;
  padding: 1rem;
  position: relative;
}

.nk-probe-console::before {
  animation: nk-scan 7s linear infinite;
  background: linear-gradient(90deg, transparent, rgba(91, 227, 255, 0.1), transparent);
  content: "";
  inset: 0 auto 0 -35%;
  pointer-events: none;
  position: absolute;
  width: 32%;
}

@keyframes nk-scan {
  to { transform: translateX(430%); }
}

.nk-console-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.05rem;
  position: relative;
  z-index: 2;
}

.nk-console-head span {
  color: var(--nk-muted);
  font-size: 0.51rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nk-console-head span:last-child {
  color: var(--nk-amber);
}

.nk-channel {
  align-items: stretch;
  border-top: 1px solid rgba(91, 227, 255, 0.11);
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 82px minmax(0, 1fr) 126px;
  min-height: 112px;
  padding: 0.9rem 0;
  position: relative;
  z-index: 2;
}

.nk-channel-label {
  align-content: center;
  display: grid;
  gap: 0.3rem;
}

.nk-channel-label strong {
  color: var(--nk-cyan-soft);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.12em;
}

.nk-channel-label span {
  color: var(--nk-muted);
  font-size: 0.49rem;
  text-transform: uppercase;
}

.nk-probe-cells {
  align-content: center;
  display: grid;
  gap: 0.42rem;
  grid-template-columns: repeat(12, minmax(10px, 1fr));
}

.nk-probe-cell {
  animation: nk-cell-breathe 3.6s ease-in-out infinite;
  animation-delay: calc(var(--cell-index) * -0.085s);
  aspect-ratio: 1.45;
  background: rgba(91, 227, 255, 0.2);
  border: 1px solid rgba(91, 227, 255, 0.38);
  box-shadow: inset 0 0 12px rgba(91, 227, 255, 0.035);
  min-height: 13px;
}

.nk-icmp-cells .nk-probe-cell {
  background: rgba(185, 245, 255, 0.12);
  border-color: rgba(185, 245, 255, 0.3);
}

@keyframes nk-cell-breathe {
  0%, 100% { opacity: 0.52; }
  50% { opacity: 0.96; box-shadow: 0 0 11px rgba(91, 227, 255, 0.12); }
}

.nk-outcome {
  align-content: center;
  background: linear-gradient(90deg, rgba(229, 189, 114, 0.025), rgba(229, 189, 114, 0.075));
  border-left: 1px solid rgba(229, 189, 114, 0.36);
  display: grid;
  gap: 0.3rem;
  padding-left: 0.85rem;
}

.nk-outcome span {
  color: rgba(229, 189, 114, 0.62);
  font-size: 0.45rem;
  letter-spacing: 0.11em;
}

.nk-outcome strong {
  color: var(--nk-amber-soft);
  font-size: 0.54rem;
  font-weight: 400;
  letter-spacing: 0.075em;
}

.nk-boundary-note {
  border-top: 1px solid rgba(229, 189, 114, 0.17);
  display: grid;
  gap: 0.6rem;
  grid-template-columns: auto 1fr auto;
  padding-top: 0.8rem;
  position: relative;
  z-index: 2;
}

.nk-boundary-note span {
  color: var(--nk-muted);
  font-size: 0.48rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.nk-boundary-note span:nth-child(2) {
  color: rgba(229, 189, 114, 0.54);
  text-align: center;
}

.nk-boundary-note span:last-child {
  color: var(--nk-amber-soft);
}

.nk-history-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 2fr) minmax(220px, 0.72fr);
}

.nk-history-panel {
  background: rgba(2, 8, 9, 0.78);
  border: 1px solid rgba(91, 227, 255, 0.14);
  min-height: 310px;
  padding: 1rem;
}

.nk-history-range {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.nk-history-range span {
  color: var(--nk-muted);
  font-size: 0.48rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nk-history-field {
  align-content: center;
  display: grid;
  gap: 0.22rem;
  grid-template-columns: repeat(27, minmax(4px, 1fr));
  min-height: 120px;
}

.nk-history-cell {
  background: rgba(91, 227, 255, calc(0.16 + (var(--level, .62) * .56)));
  border-top: 1px solid rgba(185, 245, 255, 0.52);
  height: calc(16px + (var(--level, .62) * 18px));
  opacity: 0.88;
}

.nk-history-cell.is-gap {
  background: repeating-linear-gradient(135deg, rgba(229, 189, 114, 0.38) 0 2px, transparent 2px 5px);
  border-top-color: rgba(229, 189, 114, 0.44);
  height: 25px;
}

.nk-history-caption {
  color: var(--nk-muted);
  font-size: 0.53rem;
  line-height: 1.55;
  margin: 0.95rem 0 0;
  text-align: center;
}

.nk-history-summary {
  border-left: 2px solid var(--nk-cyan);
  color: #9fb7bb;
  font-size: 0.61rem;
  line-height: 1.55;
  margin: 1rem 0 0;
  padding: 0.55rem 0.75rem;
  text-align: center;
}

.nk-history-stats {
  display: grid;
  gap: 0.48rem;
  grid-template-columns: 1fr;
}

.nk-history-stat {
  align-content: center;
  background: var(--nk-panel-soft);
  border: 1px solid rgba(91, 227, 255, 0.13);
  display: grid;
  min-height: 49px;
  padding: 0.55rem 0.75rem;
  text-align: center;
}

.nk-history-stat span {
  color: var(--nk-muted);
  font-size: 0.47rem;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.nk-history-stat strong {
  color: var(--nk-cyan-soft);
  font-size: 1.12rem;
  font-weight: 400;
  margin-top: 0.18rem;
}

.nk-archive {
  border-top: 1px solid rgba(91, 227, 255, 0.13);
  margin-top: 1rem;
  padding-top: 0.8rem;
}

.nk-archive summary {
  color: var(--nk-cyan);
  cursor: pointer;
  font-size: 0.58rem;
  text-align: center;
}

.nk-table-wrap {
  overflow-x: auto;
  padding-top: 0.8rem;
}

.nk-history-table {
  border-collapse: collapse;
  font-size: 0.62rem;
  width: 100%;
}

.nk-history-table th,
.nk-history-table td {
  border-bottom: 1px solid rgba(91, 227, 255, 0.11);
  padding: 0.55rem 0.65rem;
  text-align: left;
}

.nk-history-table th {
  color: var(--nk-muted);
  font-weight: 400;
  text-transform: uppercase;
}

.nk-evidence-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.nk-evidence-card {
  border: 1px solid rgba(91, 227, 255, 0.17);
  min-height: 190px;
  padding: 1rem;
}

.nk-evidence-card[data-kind="derived"] {
  border-color: rgba(142, 232, 158, 0.27);
}

.nk-evidence-card[data-kind="unknown"] {
  border-color: rgba(229, 189, 114, 0.3);
}

.nk-evidence-card h2 {
  color: var(--nk-cyan-soft);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin: 0 0 0.8rem;
  text-transform: uppercase;
}

.nk-evidence-card[data-kind="derived"] h2 { color: var(--nk-green); }
.nk-evidence-card[data-kind="unknown"] h2 { color: var(--nk-amber-soft); }

.nk-evidence-card ul {
  color: #9db2b6;
  font-size: 0.62rem;
  line-height: 1.55;
  margin: 0;
  padding-left: 1.15rem;
}

.nk-method-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.5fr) minmax(230px, 0.8fr);
}

.nk-method-block {
  border-top: 1px solid rgba(91, 227, 255, 0.13);
  padding-top: 0.9rem;
}

.nk-method-block h2 {
  color: var(--nk-cyan-soft);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin: 0 0 0.65rem;
}

.nk-method-block p,
.nk-method-block li {
  color: #94aaae;
  font-size: 0.62rem;
  line-height: 1.62;
}

.nk-method-block ul {
  margin: 0;
  padding-left: 1.1rem;
}

.nk-source-link {
  color: var(--nk-cyan);
  text-decoration: none;
}

.nk-source-link:hover,
.nk-source-link:focus-visible {
  color: var(--nk-cyan-soft);
  text-decoration: underline;
}

.nk-footer-terminal {
  border-top: 1px solid rgba(91, 227, 255, 0.12);
  margin-top: 3rem;
  padding-top: 1.35rem;
}

@media (max-width: 900px) {
  .nk-current-grid,
  .nk-history-grid,
  .nk-method-grid {
    grid-template-columns: 1fr;
  }

  .nk-readout {
    grid-template-columns: 1fr 1fr;
    min-height: 0;
  }

  .nk-count-block {
    border-bottom: 0;
  }

  .nk-count-block:first-child {
    border-right: 1px solid rgba(91, 227, 255, 0.11);
  }

  .nk-updated {
    border-top: 1px solid rgba(91, 227, 255, 0.11);
    grid-column: 1 / -1;
    text-align: center;
  }
}

@media (max-width: 760px) {
  .nk-section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .nk-section-head p {
    text-align: left;
  }

  .nk-channel {
    grid-template-columns: 66px minmax(0, 1fr) 104px;
  }

  .nk-probe-cells {
    grid-template-columns: repeat(8, minmax(9px, 1fr));
  }

  .nk-evidence-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .nk-topbar {
    gap: 0.8rem;
    margin-top: 1rem;
  }

  .nk-compact-title {
    max-width: 18rem;
  }

  .nk-language {
    flex: 0 0 auto;
  }

  .nk-readout {
    grid-template-columns: 1fr;
  }

  .nk-count-block:first-child {
    border-bottom: 1px solid rgba(91, 227, 255, 0.11);
    border-right: 0;
  }

  .nk-channel {
    gap: 0.55rem;
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .nk-outcome {
    border-left: 0;
    border-top: 1px solid rgba(229, 189, 114, 0.3);
    grid-column: 1 / -1;
    grid-template-columns: auto 1fr;
    padding: 0.55rem 0;
  }

  .nk-outcome strong {
    text-align: right;
  }

  .nk-boundary-note {
    grid-template-columns: 1fr;
  }

  .nk-boundary-note span,
  .nk-boundary-note span:nth-child(2),
  .nk-boundary-note span:last-child {
    text-align: left;
  }

  .nk-history-field {
    grid-template-columns: repeat(18, minmax(4px, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .nk-probe-console::before,
  .nk-probe-cell {
    animation: none !important;
  }
}