:root {
  --streaming-console-width: 560px;
  --streaming-sidebar-width: 132px;
  --streaming-table-width: 980px;
  --streaming-detail-width: 760px;
}

.streaming-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-soft);
  background:
    radial-gradient(ellipse at 82% 34%, var(--color-navy-glow), var(--color-transparent) 42%),
    linear-gradient(145deg, var(--color-bg), var(--color-bg-deep));
}

.streaming-hero::before {
  position: absolute;
  top: 18%;
  right: -12%;
  width: 48vw;
  height: 48vw;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  box-shadow:
    0 0 0 52px var(--color-grid),
    0 0 0 104px var(--color-grid);
  content: "";
  pointer-events: none;
}

.streaming-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  align-items: center;
  gap: clamp(38px, 6vw, 84px);
  min-height: 640px;
}

.streaming-intro {
  position: relative;
  z-index: 2;
}

.streaming-intro h1 {
  max-width: 720px;
  margin-top: 20px;
}

.streaming-intro .lead {
  max-width: 680px;
}

.streaming-intro .button-row {
  margin-top: 28px;
}

.streaming-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.streaming-console {
  position: relative;
  z-index: 2;
  width: min(100%, var(--streaming-console-width));
  min-height: 430px;
  justify-self: end;
  overflow: hidden;
  transform: rotate(0.45deg);
}

.console-topbar {
  min-height: 52px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-border-soft);
  background: var(--color-glass-light);
}

.console-topbar .traffic-lights {
  padding-left: 0;
}

.console-topbar .badge {
  justify-self: end;
}

.console-title {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.console-body {
  min-height: 378px;
  display: grid;
  grid-template-columns: var(--streaming-sidebar-width) minmax(0, 1fr);
}

.console-sidebar {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 22px 12px;
  border-right: 1px solid var(--color-border-soft);
  background: var(--color-glass-light);
}

.console-side-label {
  margin: 0 8px 10px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.console-side-item {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text-dim);
  font-size: 11px;
}

.console-side-item-active {
  color: var(--color-accent-light);
  background: var(--color-accent-faint);
}

.console-canvas {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(28px, 5vw, 52px);
  background:
    radial-gradient(circle at 78% 18%, var(--color-accent-faint), var(--color-transparent) 29%),
    linear-gradient(135deg, var(--color-transparent), var(--color-navy-faint));
}

.console-canvas h2 {
  max-width: 390px;
  font-size: clamp(27px, 3vw, 38px);
}

.console-canvas p {
  max-width: 390px;
  font-size: 13px;
}

.console-flow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 8px;
}

.console-flow span:not(.console-arrow) {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding-inline: 12px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  background: var(--color-glass-light);
  font-family: var(--font-mono);
  font-size: 10px;
}

.console-arrow {
  color: var(--color-accent);
}

.console-note {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border-soft);
  color: var(--color-text-dim);
  font-size: 11px;
  line-height: 1.65;
}

.console-note .status-dot {
  margin-top: 6px;
  flex: 0 0 auto;
}

.streaming-article section:nth-child(even) {
  border-top: 1px solid var(--color-border-soft);
  border-bottom: 1px solid var(--color-border-soft);
  background: linear-gradient(90deg, var(--color-transparent), var(--color-navy-faint), var(--color-transparent));
}

.concept-browser {
  display: grid;
  grid-template-columns: minmax(180px, 0.28fr) minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.concept-index {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 26px 16px;
  border-right: 1px solid var(--color-border-soft);
  background: var(--color-glass-light);
}

.concept-index-label {
  margin: 0 10px 12px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.concept-index-item {
  min-height: 42px;
  display: flex;
  align-items: center;
  padding-inline: 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 13px;
}

.concept-index-item:hover,
.concept-index-item-active {
  color: var(--color-text);
  background: var(--color-accent-faint);
}

.concept-detail {
  padding: clamp(26px, 5vw, 54px);
}

.concept-block {
  max-width: var(--streaming-detail-width);
}

.concept-block + .concept-block {
  margin-top: 34px;
  padding-top: 34px;
  border-top: 1px solid var(--color-border-soft);
}

.concept-block h3 {
  font-size: 22px;
}

.concept-block p:last-child {
  margin-bottom: 0;
}

.support-matrix-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
  -webkit-overflow-scrolling: touch;
}

.support-matrix {
  min-width: var(--streaming-table-width);
}

.support-matrix thead {
  background: var(--color-glass-light);
}

.support-matrix th,
.support-matrix td {
  padding: 16px 18px;
}

.support-matrix tbody tr:hover {
  background: var(--color-glass-light);
}

.support-matrix td:first-child {
  color: var(--color-text);
}

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

.ip-panel {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(145deg, var(--color-glass-light), var(--color-transparent) 42%),
    var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.ip-panel-head {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 18px;
}

.ip-panel-head h3 {
  margin-bottom: 0;
}

.ip-symbol {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-border-bright);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  background: var(--color-accent-faint);
}

.ip-symbol svg {
  width: 26px;
  height: 26px;
}

.ip-panel .check-list {
  margin: 24px 0 0;
}

.quality-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.52fr);
  align-items: start;
  gap: clamp(28px, 5vw, 68px);
}

.quality-copy {
  max-width: var(--streaming-detail-width);
}

.quality-copy h3:not(:first-child) {
  margin-top: 36px;
}

.quality-check {
  position: sticky;
  top: var(--anchor-offset);
}

.quality-steps {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: quality-step;
}

.quality-steps li {
  position: relative;
  padding: 0 0 20px 44px;
  counter-increment: quality-step;
}

.quality-steps li + li {
  margin-top: 18px;
}

.quality-steps li::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-accent-faint);
  border-radius: var(--radius-pill);
  color: var(--color-accent-light);
  background: var(--color-accent-faint);
  content: counter(quality-step);
  font-family: var(--font-mono);
  font-size: 11px;
}

.quality-steps strong,
.quality-steps span {
  display: block;
}

.quality-steps span {
  margin-top: 5px;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.65;
}

.error-ledger {
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.error-row {
  display: grid;
  grid-template-columns: minmax(240px, 0.42fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 64px);
  padding: clamp(24px, 4vw, 38px);
}

.error-row + .error-row {
  border-top: 1px solid var(--color-border-soft);
}

.error-kind h3 {
  margin: 13px 0 0;
  font-size: 20px;
}

.error-explain p {
  margin-bottom: 0;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.workflow-card {
  min-width: 0;
  padding: 28px;
}

.workflow-card + .workflow-card {
  border-left: 1px solid var(--color-border-soft);
}

.workflow-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.workflow-card h3 {
  margin-top: 15px;
  font-size: 20px;
}

.workflow-card p {
  margin-bottom: 0;
  font-size: 14px;
}

.streaming-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  margin-top: 42px;
}

.streaming-next h2 {
  margin-bottom: 10px;
  font-size: clamp(26px, 3vw, 38px);
}

.streaming-next p {
  max-width: 680px;
  margin-bottom: 0;
}

.streaming-next .button-row {
  flex: 0 0 auto;
}

@media (max-width: 1080px) {
  .streaming-hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .streaming-console {
    width: 100%;
    justify-self: stretch;
    transform: none;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workflow-card + .workflow-card {
    border-left: 0;
  }

  .workflow-card:nth-child(even) {
    border-left: 1px solid var(--color-border-soft);
  }

  .workflow-card:nth-child(n + 3) {
    border-top: 1px solid var(--color-border-soft);
  }
}

@media (max-width: 820px) {
  .concept-browser {
    grid-template-columns: 1fr;
  }

  .concept-index {
    flex-direction: row;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--color-border-soft);
    -webkit-overflow-scrolling: touch;
  }

  .concept-index-label {
    display: none;
  }

  .concept-index-item {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .ip-comparison,
  .quality-layout {
    grid-template-columns: 1fr;
  }

  .quality-check {
    position: static;
  }

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

  .streaming-next {
    align-items: stretch;
    flex-direction: column;
  }

  .streaming-next .button-row {
    flex: 0 1 auto;
  }
}

@media (max-width: 640px) {
  .streaming-hero-grid {
    padding-top: 24px;
    padding-bottom: 28px;
  }

  .streaming-hero::before {
    display: none;
  }

  .console-topbar {
    grid-template-columns: auto 1fr;
  }

  .console-topbar .badge {
    display: none;
  }

  .console-title {
    justify-self: end;
  }

  .console-body {
    grid-template-columns: 78px minmax(0, 1fr);
  }

  .console-sidebar {
    padding-inline: 7px;
  }

  .console-side-label {
    margin-inline: 5px;
  }

  .console-side-item {
    padding-inline: 7px;
    font-size: 9px;
  }

  .console-canvas {
    padding: 24px 18px;
  }

  .console-canvas h2 {
    font-size: 25px;
  }

  .console-flow {
    flex-wrap: wrap;
  }

  .concept-detail {
    padding: 22px 18px;
  }

  .ip-panel {
    padding: 22px 18px;
    border-radius: var(--radius-lg);
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .workflow-card:nth-child(even) {
    border-left: 0;
  }

  .workflow-card + .workflow-card,
  .workflow-card:nth-child(n + 3) {
    border-top: 1px solid var(--color-border-soft);
  }

  .streaming-next {
    padding: 22px 18px;
  }
}

@media (max-width: 390px) {
  .console-body {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .console-side-item {
    padding-inline: 5px;
    font-size: 8px;
  }

  .console-canvas {
    padding-inline: 14px;
  }

  .console-canvas h2 {
    font-size: 22px;
  }

  .console-flow {
    gap: 5px;
  }

  .console-flow span:not(.console-arrow) {
    padding-inline: 8px;
    font-size: 8px;
  }
}