.stream-hero {
  position: relative;
  overflow: clip;
  padding-top: 72px;
  padding-bottom: 82px;
  border-bottom: 1px solid var(--border-soft);
  background:
    radial-gradient(760px 440px at 8% 8%, color-mix(in srgb, var(--color-panel-raised) 76%, transparent), transparent 72%),
    radial-gradient(680px 500px at 92% 45%, color-mix(in srgb, var(--color-accent) 8%, transparent), transparent 72%),
    var(--color-bg);
}

.stream-hero::before {
  content: '';
  position: absolute;
  inset: 42% 0 0;
  pointer-events: none;
  opacity: 0.58;
  background:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(transparent, var(--color-black));
}

.stream-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: center;
  gap: 58px;
}

.stream-hero-copy h1 {
  max-width: 9em;
  margin-top: 16px;
}

.stream-hero-copy .hero-actions {
  margin-top: 28px;
  margin-bottom: 24px;
}

.stream-hero-lead {
  max-width: 37em;
  color: var(--color-text-muted);
  font-size: 18px;
}

.stream-fact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px dashed var(--color-border);
}

.stream-fact-line span {
  display: grid;
  gap: 2px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.stream-fact-line strong {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 14px;
}

.stream-console {
  position: relative;
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--panel-glass);
  box-shadow: var(--shadow-card);
}

.stream-console::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 24px 24px;
}

.stream-console-head,
.stream-console-foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--color-text-muted);
  font-size: 11px;
}

.stream-console-head {
  padding: 20px 22px;
  border-bottom: 1px solid var(--border-soft);
}

.stream-console-foot {
  padding: 15px 22px;
  border-top: 1px solid var(--border-soft);
  font-family: var(--font-mono);
}

.stream-console-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-success);
}

.stream-console-state i {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  animation: stream-pulse 2.8s ease-in-out infinite;
}

.stream-bus {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto minmax(22px, 1fr) auto minmax(22px, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 22px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  text-align: center;
}

.stream-bus-line {
  height: 1px;
  border-top: 1px dashed var(--color-border);
}

.stream-signal {
  position: relative;
  z-index: 1;
  margin: 0 16px 18px;
  overflow: clip;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-medium);
  background: var(--color-panel-raised);
}

.stream-signal svg {
  width: 100%;
  height: auto;
  display: block;
}

.stream-signal-guide,
.stream-signal-wave,
.stream-signal line {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.stream-signal-guide {
  stroke: var(--color-border);
  stroke-width: 8;
  opacity: 0.44;
}

.stream-signal-wave {
  stroke: var(--color-wave);
  stroke-width: 2;
}

.stream-signal line {
  stroke: var(--color-border);
  stroke-width: 1;
  stroke-dasharray: 4 6;
}

.stream-signal circle {
  fill: var(--color-wave);
  stroke: var(--color-panel-raised);
  stroke-width: 4;
}

.stream-signal-labels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border-soft);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  text-align: center;
}

.stream-article {
  overflow-x: clip;
}

.section-heading.stream-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 34px;
}

.stream-heading h2 {
  margin-bottom: 0;
}

.stream-heading > p {
  margin-bottom: 4px;
  color: var(--color-text-muted);
}

.stream-support-table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  color: var(--color-text-muted);
}

.stream-support-table th,
.stream-support-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

.stream-support-table th {
  color: var(--color-text);
  background: var(--color-panel-raised);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.stream-support-table td:first-child {
  color: var(--color-text);
  font-weight: 800;
}

.stream-support-table tbody tr:last-child td {
  border-bottom: 0;
}

.stream-support-table .status-badge {
  white-space: nowrap;
}

.stream-support-table .badge-warning .status-dot {
  background: var(--color-warning);
}

.stream-explain-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 64px;
}

.stream-explain-intro p {
  color: var(--color-text-muted);
}

.stream-checklist {
  display: grid;
  gap: 12px;
}

.stream-checklist article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
}

.stream-check-index {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-small);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 800;
}

.stream-checklist h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.stream-checklist p {
  margin: 0;
  color: var(--color-text-muted);
}

.ip-ledger {
  position: relative;
  display: grid;
}

.ip-ledger::before {
  content: '';
  position: absolute;
  top: 34px;
  bottom: 34px;
  left: 7px;
  border-left: 1px dashed var(--color-border);
}

.ip-ledger-row {
  position: relative;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 38px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-soft);
  transform-style: preserve-3d;
}

.ip-ledger-label {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  color: var(--color-text-muted);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.ip-ledger-label .feature-node {
  margin-top: 2px;
}

.ip-ledger-row h3 {
  font-size: 24px;
}

.ip-ledger-row p {
  max-width: 56em;
  color: var(--color-text-muted);
}

.ip-ledger-row p:last-child {
  margin-bottom: 0;
}

.stream-quality-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 64px;
  align-items: start;
}

.stream-quality-layout > div:first-child p {
  color: var(--color-text-muted);
}

.quality-board {
  position: relative;
  display: grid;
  gap: 0;
  padding: 12px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.quality-board::before {
  content: '';
  position: absolute;
  top: 42px;
  bottom: 42px;
  left: 34px;
  border-left: 1px dashed var(--color-border);
}

.quality-board article {
  position: relative;
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-soft);
}

.quality-board article:last-child {
  border-bottom: 0;
}

.quality-node {
  position: relative;
  z-index: 1;
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border: 3px solid var(--color-panel);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.quality-board h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.quality-board p {
  margin: 0;
  color: var(--color-text-muted);
}

.error-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 34px;
}

.error-flow article {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--border-soft);
}

.error-flow-mark {
  display: flex;
  justify-content: center;
}

.error-flow-mark span {
  width: 12px;
  height: 12px;
  margin-top: 7px;
  border: 3px solid var(--color-bg);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.error-flow h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.error-flow p {
  margin: 0;
  color: var(--color-text-muted);
}

.stream-procedure {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1.38fr);
  gap: 62px;
  align-items: start;
}

.stream-procedure-head {
  position: sticky;
  top: calc(var(--header-height) + 22px);
}

.stream-procedure-head p {
  color: var(--color-text-muted);
}

.stream-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: stream-step;
}

.stream-steps li {
  counter-increment: stream-step;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 20px;
  padding: 26px 0;
  border-top: 1px solid var(--border-soft);
}

.stream-steps li::before {
  content: counter(stream-step);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  color: var(--color-accent);
  background: var(--color-panel);
  font-family: var(--font-mono);
  font-weight: 800;
}

.stream-steps h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.stream-steps p {
  margin: 0;
  color: var(--color-text-muted);
}

.stream-plan-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 48px;
  padding: 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background:
    radial-gradient(440px 220px at 92% 8%, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 72%),
    var(--color-panel-raised);
  box-shadow: var(--shadow-card);
}

.stream-plan-note p {
  max-width: 58em;
  color: var(--color-text-muted);
}

.stream-plan-note p:last-child {
  margin-bottom: 0;
}

.stream-plan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@keyframes stream-pulse {
  0%,
  100% {
    opacity: 0.52;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.28);
  }
}

@media (max-width: 980px) {
  .stream-hero-layout,
  .stream-explain-grid,
  .stream-quality-layout {
    grid-template-columns: 1fr;
  }

  .stream-hero-layout {
    gap: 46px;
  }

  .stream-explain-grid,
  .stream-quality-layout {
    gap: 40px;
  }

  .stream-procedure {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .stream-procedure-head {
    position: static;
  }

  .stream-plan-note {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 760px) {
  .stream-hero {
    padding-top: 50px;
    padding-bottom: 62px;
  }

  .section-heading.stream-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 18px;
  }

  .ip-ledger-row {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .ip-ledger::before {
    display: none;
  }

  .error-flow {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .stream-plan-actions {
    width: 100%;
  }

  .stream-plan-actions .btn-primary,
  .stream-plan-actions .btn-secondary {
    flex: 1 1 auto;
  }
}

@media (max-width: 640px) {
  .stream-hero-lead {
    font-size: 16px;
  }

  .stream-fact-line {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .stream-console-head,
  .stream-console-foot {
    align-items: flex-start;
    flex-direction: column;
    padding-inline: 16px;
  }

  .stream-bus {
    grid-template-columns: 1fr;
    justify-items: start;
    text-align: left;
    padding-inline: 16px;
  }

  .stream-bus-line {
    width: 100%;
  }

  .stream-signal {
    margin-inline: 8px;
  }

  .stream-signal-labels {
    font-size: 9px;
  }

  .stream-checklist article {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 14px;
    padding: 20px;
  }

  .stream-check-index {
    width: 32px;
    height: 32px;
  }

  .quality-board {
    padding-inline: 20px;
  }

  .quality-board::before {
    left: 26px;
  }

  .stream-steps li {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
  }

  .stream-steps li::before {
    width: 38px;
    height: 38px;
  }

  .stream-plan-note {
    padding: 24px;
  }

  .stream-plan-actions {
    flex-direction: column;
  }

  .stream-plan-actions .btn-primary,
  .stream-plan-actions .btn-secondary {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stream-console-state i {
    animation: none;
  }
}