.ip-main {
  background: var(--color-page);
}

.ip-hero {
  padding-top: clamp(54px, 8vw, 104px);
  padding-bottom: clamp(52px, 8vw, 96px);
  border-bottom: 1px solid var(--color-line);
}

.ip-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(420px, 1.12fr);
  align-items: center;
  gap: clamp(36px, 7vw, 96px);
}

.ip-hero-copy {
  max-width: 39rem;
}

.ip-hero-copy h1 {
  margin-top: 1.3rem;
}

.ip-lead {
  max-width: 38rem;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.ip-scope {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
}

.ip-scope li {
  padding: .35rem .72rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .04em;
}

.ip-observation-figure {
  position: relative;
  margin: 0;
  padding: clamp(18px, 3vw, 34px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.ip-observation-figure::before,
.ip-observation-figure::after {
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--color-accent);
  content: "";
}

.ip-observation-figure::before {
  top: 12px;
  left: 12px;
  border-top: 2px solid var(--color-accent);
  border-left: 2px solid var(--color-accent);
}

.ip-observation-figure::after {
  right: 12px;
  bottom: 12px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
}

.ip-observation-figure svg {
  width: 100%;
  color: var(--color-muted);
}

.ip-observation-figure figcaption {
  padding-top: .8rem;
  border-top: 1px solid var(--color-line);
  text-align: right;
}

.ip-route-line,
.ip-route-line-secondary,
.ip-map-ring,
.ip-bird-outline,
.ip-lock-outline,
.ip-compass-line,
.ip-compass-ring {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ip-route-line {
  stroke: var(--color-accent);
  stroke-width: 4;
  stroke-dasharray: 5 13;
}

.ip-route-line-secondary {
  stroke: var(--color-sky-deep);
  stroke-width: 3;
  stroke-dasharray: 3 14;
}

.ip-map-ring,
.ip-compass-ring {
  stroke: var(--color-line);
  stroke-width: 2;
}

.ip-map-node {
  fill: var(--color-page);
  stroke: var(--color-accent);
  stroke-width: 4;
}

.ip-bird-outline {
  fill: var(--color-accent-soft);
  stroke: var(--color-accent-dark);
  stroke-width: 3;
}

.ip-lock-outline {
  fill: var(--color-page);
  stroke: var(--color-ink);
  stroke-width: 3;
}

.ip-lock-key {
  fill: var(--color-accent);
}

.ip-compass-line {
  stroke: var(--color-line);
  stroke-width: 2;
}

.ip-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.ip-section-note {
  max-width: 28rem;
  margin-bottom: .3rem;
  color: var(--color-muted);
}

.ip-result-shell {
  overflow: clip;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
  box-shadow: var(--shadow-low);
}

.ip-result-status {
  display: flex;
  min-height: 52px;
  align-items: center;
  gap: .65rem;
  padding: .75rem clamp(18px, 3vw, 30px);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
}

.ip-pulse {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  animation: ip-pulse 1.8s var(--ease-standard) infinite;
}

.ip-result-shell.is-ready .ip-pulse {
  background: var(--color-success);
  animation: none;
}

.ip-result-shell.is-error .ip-pulse {
  background: var(--color-error);
  animation: none;
}

.ip-result-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, minmax(0, 1fr));
  margin: 0;
}

.ip-result-item {
  display: flex;
  min-height: 184px;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(20px, 3vw, 30px);
  border-right: 1px solid var(--color-line);
}

.ip-result-item:last-child {
  border-right: 0;
}

.ip-result-item dt {
  color: var(--color-muted);
  font-size: .84rem;
  font-weight: 650;
}

.ip-result-item dd {
  margin: 1.2rem 0;
  overflow-wrap: anywhere;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
}

.ip-result-primary {
  background: var(--color-cream);
}

.ip-result-primary dd {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
}

.ip-result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  padding: 1rem clamp(18px, 3vw, 30px);
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
}

.copy-feedback {
  color: var(--color-muted);
  font-size: .88rem;
}

.copy-feedback[hidden] {
  display: none;
}

.ip-reading-section {
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
}

.ip-reading-layout {
  display: grid;
  grid-template-columns: minmax(170px, .3fr) minmax(0, 1fr);
  gap: clamp(36px, 7vw, 96px);
}

.ip-reading-index {
  position: sticky;
  top: var(--toc-top);
  align-self: start;
  padding: 1.2rem 0;
  border-top: 2px solid var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.ip-reading-index p {
  margin-bottom: .8rem;
}

.ip-reading-index a {
  display: block;
  padding: .48rem 0;
  color: var(--color-muted);
  font-size: .88rem;
}

.ip-reading-index a:hover {
  color: var(--color-accent-dark);
}

.ip-reading-copy {
  max-width: 55rem;
}

.ip-reading-intro {
  margin-bottom: clamp(34px, 6vw, 64px);
}

.ip-note-entry {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 1.5rem;
  padding: clamp(24px, 4vw, 38px) 0;
  border-top: 1px solid var(--color-line);
  scroll-margin-top: calc(var(--toc-top) + 20px);
}

.ip-note-entry:last-child {
  border-bottom: 1px solid var(--color-line);
}

.ip-entry-mark {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
}

.ip-note-entry h3 {
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
}

.ip-note-entry p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.ip-dns-section {
  border-top: 1px solid var(--color-line);
}

.ip-dns-grid {
  display: grid;
  grid-template-columns: minmax(250px, .72fr) minmax(0, 1.28fr);
  gap: clamp(40px, 8vw, 110px);
}

.ip-dns-heading {
  align-self: start;
}

.ip-dns-heading p:last-child {
  color: var(--color-muted);
}

.ip-dns-ledger {
  border-top: 2px solid var(--color-ink);
}

.ip-dns-ledger article {
  position: relative;
  padding: 1.5rem 1rem 1.5rem 2rem;
  border-bottom: 1px solid var(--color-line);
}

.ip-dns-ledger h3 {
  margin-bottom: .4rem;
  font-family: var(--font-body);
  font-size: 1.05rem;
}

.ip-dns-ledger p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: .92rem;
}

.ip-ledger-dot {
  position: absolute;
  top: 2rem;
  left: .25rem;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.ip-privacy-note {
  max-width: var(--reading-max);
  margin: clamp(38px, 7vw, 76px) auto 0;
}

.ip-fallback-copy {
  position: fixed;
  top: 0;
  left: -100%;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

@keyframes ip-pulse {
  0%,
  100% {
    opacity: .35;
    transform: scale(.82);
  }

  50% {
    opacity: 1;
    transform: scale(1.16);
  }
}

@media (max-width: 1020px) {
  .ip-hero-grid {
    grid-template-columns: 1fr;
  }

  .ip-hero-copy {
    max-width: 46rem;
  }

  .ip-observation-figure {
    max-width: 760px;
  }

  .ip-result-grid {
    grid-template-columns: 1fr 1fr;
  }

  .ip-result-item:nth-child(2) {
    border-right: 0;
  }

  .ip-result-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--color-line);
  }

  .ip-dns-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .ip-hero {
    padding-top: 46px;
    padding-bottom: 54px;
  }

  .ip-observation-figure {
    padding: 14px;
  }

  .ip-section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: .7rem;
  }

  .ip-reading-layout {
    grid-template-columns: 1fr;
  }

  .ip-reading-index {
    position: static;
    display: flex;
    gap: .35rem;
    padding: .6rem;
    overflow-x: auto;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    background: var(--color-page);
    -webkit-overflow-scrolling: touch;
  }

  .ip-reading-index p {
    display: none;
  }

  .ip-reading-index a {
    min-width: max-content;
    padding: .4rem .7rem;
    border-radius: var(--radius-pill);
    background: var(--color-panel-strong);
  }
}

@media (max-width: 600px) {
  .ip-result-grid {
    grid-template-columns: 1fr;
  }

  .ip-result-item {
    min-height: 148px;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .ip-result-item:nth-child(2) {
    border-right: 0;
  }

  .ip-result-item:last-child {
    border-bottom: 0;
  }

  .ip-result-actions .btn-primary,
  .ip-result-actions .btn-secondary {
    flex: 1 1 130px;
  }

  .copy-feedback {
    width: 100%;
  }

  .ip-note-entry {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 1rem;
  }

  .ip-entry-mark {
    width: 44px;
    height: 44px;
    font-size: .64rem;
  }

  .ip-dns-ledger article {
    padding-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ip-pulse {
    animation: none;
  }
}