/* Domain-specific diagrams for the business pages. */
.business-diagram {
  margin: 0;
  padding: 0;
}

.business-diagram h3 {
  margin: 0;
  font-size: clamp(1.15rem, 1.55vw, 1.42rem);
  line-height: 1.34;
  word-break: keep-all;
}

.business-diagram p {
  margin: 12px 0 0;
  color: #596168;
  font-size: 0.94rem;
  line-height: 1.68;
  word-break: keep-all;
}

.diagram-step {
  color: #8b949a;
  font-size: 0.72rem;
  font-weight: 850;
  font-variant-numeric: tabular-nums;
}

.business-diagram img {
  display: block;
  width: 46px;
  height: 46px;
  object-fit: contain;
}

/* Access control: three decisions feed one full-width audit record. */
.access-decision {
  border-top: 1px solid rgba(5, 5, 5, 0.18);
  border-bottom: 1px solid rgba(5, 5, 5, 0.18);
}

.access-decision__path {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.access-decision__path li {
  position: relative;
  min-height: 248px;
  padding: 30px clamp(22px, 2.5vw, 34px);
  border-left: 1px solid rgba(5, 5, 5, 0.1);
}

.access-decision__path li:first-child {
  border-left: 0;
}

.access-decision__path li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -6px;
  z-index: 2;
  width: 10px;
  height: 10px;
  border-top: 1px solid var(--red);
  border-right: 1px solid var(--red);
  background: #fff;
  transform: translateY(-50%) rotate(45deg);
}

.access-decision__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.access-decision__record {
  display: grid;
  grid-template-columns: 72px 58px minmax(180px, 0.42fr) minmax(260px, 1fr);
  gap: 22px;
  align-items: center;
  min-height: 128px;
  padding: 28px clamp(22px, 3vw, 38px);
  background: #111518;
  color: #fff;
}

.access-decision__record .diagram-step {
  color: var(--orange);
}

.access-decision__record img {
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.access-decision__record p {
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
}

/* Speedgate: the information follows a physical gate lane. */
.gate-lane {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(5, 5, 5, 0.18);
  border-bottom: 1px solid rgba(5, 5, 5, 0.18);
  list-style: none;
}

.gate-lane::before {
  content: "";
  position: absolute;
  top: 80px;
  right: 8%;
  left: 8%;
  height: 2px;
  background: #cfd5d9;
}

.gate-lane li {
  position: relative;
  z-index: 1;
  min-height: 286px;
  padding: 40px clamp(18px, 2.2vw, 30px) 30px;
  border-left: 1px solid rgba(5, 5, 5, 0.08);
}

.gate-lane li:first-child {
  border-left: 0;
}

.gate-lane__signal {
  position: relative;
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  margin: 0 auto 28px;
  border: 1px solid #cfd5d9;
  border-radius: 50%;
  background: #fff;
}

.gate-lane__signal::after {
  content: "";
  position: absolute;
  right: -4px;
  bottom: 8px;
  width: 10px;
  height: 10px;
  background: var(--red);
  border-radius: 50%;
}

.gate-lane__signal--open::before,
.gate-lane__signal--closed::before {
  content: "";
  position: absolute;
  top: 38px;
  left: 16px;
  width: 48px;
  height: 2px;
  background: var(--red);
  transform-origin: center;
}

.gate-lane__signal--open::before {
  transform: rotate(-32deg);
}

.gate-lane__signal--closed::before {
  transform: rotate(0deg);
}

.gate-lane__copy {
  text-align: center;
}

.gate-lane .diagram-step {
  display: block;
  margin-bottom: 10px;
}

/* Parking: a four-checkpoint vehicle route on a restrained road surface. */
.parking-route {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #15191c;
  color: #fff;
  list-style: none;
}

.parking-route::before {
  content: "";
  position: absolute;
  top: 101px;
  right: 0;
  left: 0;
  border-top: 2px dashed rgba(255, 255, 255, 0.26);
}

.parking-route li {
  position: relative;
  z-index: 1;
  min-height: 304px;
  padding: 42px clamp(20px, 2.4vw, 32px) 34px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.parking-route li:first-child {
  border-left: 0;
}

.parking-route__checkpoint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  margin-bottom: 26px;
}

.parking-route__icon {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 4px;
  background: #fff;
}

.parking-route__icon img {
  width: 42px;
  height: 42px;
}

.parking-route .diagram-step {
  color: var(--orange);
}

.parking-route h3 {
  color: #fff;
}

.parking-route p {
  color: rgba(255, 255, 255, 0.66);
}

/* Network: an ingress feeds the backbone, rack and connected equipment. */
.network-topology {
  position: relative;
  display: grid;
  grid-template-columns: minmax(190px, 0.72fr) minmax(300px, 1fr) minmax(250px, 0.9fr);
  border-top: 1px solid rgba(5, 5, 5, 0.18);
  border-bottom: 1px solid rgba(5, 5, 5, 0.18);
}

.network-topology::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 12%;
  left: 12%;
  height: 1px;
  background: var(--red);
}

.network-topology__node,
.network-topology__backbone {
  position: relative;
  z-index: 1;
  background: #fff;
}

.network-topology__node {
  display: flex;
  min-height: 314px;
  flex-direction: column;
  justify-content: center;
  padding: 32px clamp(22px, 2.7vw, 38px);
}

.network-topology__node + *,
.network-topology__backbone + * {
  border-left: 1px solid rgba(5, 5, 5, 0.1);
}

.network-topology__node img {
  margin-bottom: 24px;
}

.network-topology__node .diagram-step,
.network-topology__backbone .diagram-step {
  display: block;
  margin-bottom: 14px;
}

.network-topology__backbone {
  display: grid;
  grid-template-rows: repeat(2, 1fr);
  min-height: 314px;
}

.network-topology__backbone article {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  align-items: center;
  padding: 28px clamp(22px, 2.7vw, 38px);
}

.network-topology__backbone article + article {
  border-top: 1px solid rgba(5, 5, 5, 0.1);
}

.network-topology__endpoints ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid rgba(5, 5, 5, 0.12);
  list-style: none;
}

.network-topology__endpoints li {
  padding: 9px 0;
  border-bottom: 1px solid rgba(5, 5, 5, 0.08);
  color: #596168;
  font-size: 0.82rem;
}

/* Broadcast/intercom: sources converge, then split by operating zone. */
.signal-distribution {
  display: grid;
  grid-template-columns: minmax(180px, 0.78fr) minmax(210px, 0.9fr) minmax(230px, 1fr) minmax(210px, 0.9fr);
  border-top: 1px solid rgba(5, 5, 5, 0.18);
  border-bottom: 1px solid rgba(5, 5, 5, 0.18);
}

.signal-distribution__stage {
  position: relative;
  min-height: 304px;
  padding: 30px clamp(20px, 2.5vw, 34px);
  border-left: 1px solid rgba(5, 5, 5, 0.1);
}

.signal-distribution__stage:first-child {
  border-left: 0;
}

.signal-distribution__stage:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -6px;
  z-index: 2;
  width: 10px;
  height: 10px;
  border-top: 1px solid var(--red);
  border-right: 1px solid var(--red);
  background: #fff;
  transform: translateY(-50%) rotate(45deg);
}

.signal-distribution__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.signal-distribution__list {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid rgba(5, 5, 5, 0.12);
  list-style: none;
}

.signal-distribution__list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(5, 5, 5, 0.08);
  color: #596168;
  font-size: 0.84rem;
  font-weight: 700;
}

@media (max-width: 980px) {
  .access-decision__record {
    grid-template-columns: 54px 46px minmax(160px, 0.55fr) minmax(220px, 1fr);
  }

  .gate-lane,
  .parking-route,
  .signal-distribution {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gate-lane::before,
  .parking-route::before {
    display: none;
  }

  .gate-lane li:nth-child(3),
  .parking-route li:nth-child(3),
  .signal-distribution__stage:nth-child(3) {
    border-left: 0;
  }

  .gate-lane li:nth-child(-n + 2),
  .parking-route li:nth-child(-n + 2),
  .signal-distribution__stage:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(5, 5, 5, 0.1);
  }

  .parking-route li:nth-child(-n + 2) {
    border-bottom-color: rgba(255, 255, 255, 0.12);
  }

  .signal-distribution__stage:nth-child(2)::after {
    display: none;
  }

  .network-topology {
    grid-template-columns: minmax(170px, 0.7fr) minmax(280px, 1.2fr);
  }

  .network-topology::before {
    display: none;
  }

  .network-topology__endpoints {
    grid-column: 1 / -1;
    min-height: 0;
    border-top: 1px solid rgba(5, 5, 5, 0.1);
    border-left: 0;
  }
}

@media (max-width: 700px) {
  .access-decision__path,
  .gate-lane,
  .parking-route,
  .network-topology,
  .signal-distribution {
    grid-template-columns: 1fr;
  }

  .access-decision__path li,
  .gate-lane li,
  .parking-route li,
  .signal-distribution__stage {
    min-height: 0;
    border-bottom: 1px solid rgba(5, 5, 5, 0.1);
    border-left: 0;
  }

  .parking-route li {
    border-bottom-color: rgba(255, 255, 255, 0.12);
  }

  .access-decision__path li::after,
  .signal-distribution__stage::after {
    display: none;
  }

  .access-decision__record {
    grid-template-columns: 42px 46px minmax(0, 1fr);
    gap: 16px;
  }

  .access-decision__record p {
    grid-column: 1 / -1;
  }

  .gate-lane__signal {
    margin-right: 0;
    margin-left: 0;
  }

  .gate-lane__copy {
    text-align: left;
  }

  .network-topology__backbone,
  .network-topology__node {
    min-height: 0;
  }

  .network-topology__node + *,
  .network-topology__backbone + * {
    border-top: 1px solid rgba(5, 5, 5, 0.1);
    border-left: 0;
  }
}

@media (max-width: 420px) {
  .network-topology__backbone article {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
  }
}