.stream-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(64px, 8vw, 108px);
  padding-bottom: clamp(68px, 9vw, 118px);
}

.stream-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-dot) 1.2px, transparent 1.2px);
  background-size: 28px 28px;
  content: "";
  pointer-events: none;
}

.stream-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  align-items: center;
  gap: clamp(38px, 6vw, 82px);
}

.stream-hero-copy {
  position: relative;
  z-index: 2;
}

.stream-hero-copy h1 {
  max-width: 650px;
  margin-top: 20px;
}

.stream-hero-lead {
  max-width: 620px;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.8;
}

.stream-hero-actions {
  margin-bottom: 30px;
}

.stream-fact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 15px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.stream-fact-list li {
  min-width: 0;
}

.stream-fact-list strong,
.stream-fact-list span {
  display: block;
}

.stream-fact-list strong {
  margin-bottom: 2px;
  font-size: 13px;
}

.stream-fact-list span {
  color: var(--color-text-muted);
  font-size: 12px;
}

.stream-board {
  position: relative;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-xl);
  background: var(--color-paper);
  color: var(--color-ink);
  box-shadow: var(--shadow-deep);
}

.stream-board::before,
.stream-board::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: var(--radius-xl);
  background: var(--color-paper-deep);
  box-shadow: var(--shadow-soft);
  content: "";
}

.stream-board::before {
  transform: rotate(4deg) translate(13px, 11px);
}

.stream-board::after {
  transform: rotate(2deg) translate(7px, 5px);
  background: var(--color-paper-soft);
}

.stream-board-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-paper-line);
}

.stream-board-head h2 {
  margin: 5px 0 0;
  color: var(--color-ink);
  font-size: clamp(27px, 3.6vw, 40px);
}

.stream-board-head .status-badge {
  flex: 0 0 auto;
  margin-left: auto;
}

.stream-board-code {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.stream-check-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) auto;
  align-items: center;
  gap: 15px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--color-paper-line);
}

.stream-check-key {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.stream-check-row strong {
  color: var(--color-ink);
  font-size: 14px;
}

.stream-check-state {
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-paper);
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.stream-region-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
}

.stream-region-strip span {
  padding: 6px 12px;
  border: 1px solid var(--color-paper-line);
  border-radius: var(--radius-pill);
  background: var(--color-paper-soft);
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 750;
}

.stream-board-note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--color-paper-line);
  color: var(--color-ink-muted);
  font-size: 12px;
}

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

.stream-article .prose-wrap {
  color: var(--color-text-muted);
  font-size: 16px;
}

.stream-article .section-head p {
  color: var(--color-text-muted);
  font-size: 17px;
}

.scope-ledger {
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
}

.scope-ledger-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.35fr) minmax(0, 1.65fr);
  gap: 28px;
  padding: 27px 30px;
}

.scope-ledger-row + .scope-ledger-row {
  border-top: 1px dashed var(--color-paper-line);
}

.scope-ledger-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.scope-ledger-row strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-ink);
  font-size: 17px;
}

.scope-ledger-row p {
  margin: 0;
  color: var(--color-ink-muted);
}

.stream-paper-section {
  background: var(--color-paper-soft);
  color: var(--color-ink);
}

.stream-paper-section h2,
.stream-paper-section h3,
.stream-paper-section strong {
  color: var(--color-ink);
}

.stream-article .stream-paper-head p {
  color: var(--color-ink-muted);
}

.stream-paper-section .table-scroll {
  border-color: var(--color-paper-line);
  box-shadow: var(--shadow-soft);
}

.stream-support-table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
  background: var(--color-paper);
  color: var(--color-ink-muted);
}

.stream-support-table th,
.stream-support-table td {
  padding: 17px 18px;
  border-bottom: 1px solid var(--color-paper-line);
  text-align: left;
  vertical-align: middle;
}

.stream-support-table th {
  background: var(--color-paper-deep);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

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

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

.stream-table-status {
  display: inline-flex;
  max-width: 100%;
  padding: 5px 10px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-paper);
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.table-footnote {
  max-width: 900px;
  margin: 18px 0 0;
  color: var(--color-ink-muted);
  font-size: 13px;
}

.ip-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.ip-compare section {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
}

.ip-compare section:last-child {
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-soft);
}

.ip-compare-label {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.ip-compare h3 {
  font-size: 22px;
}

.ip-compare p {
  margin: 0;
  color: var(--color-text-muted);
}

.stream-panel-section {
  background: var(--color-panel);
}

.quality-sheet {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-soft);
}

.quality-sheet-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1.45fr);
  gap: 32px;
  padding: 27px 30px;
}

.quality-sheet-row + .quality-sheet-row {
  border-top: 1px dashed var(--color-border);
}

.quality-sheet-title {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.quality-sheet-mark {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  margin-top: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.quality-sheet-title strong {
  font-size: 18px;
}

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

.quality-note {
  margin: 20px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.error-ledger {
  display: grid;
  gap: 12px;
}

.error-ledger-item {
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.error-ledger-item summary {
  position: relative;
  display: grid;
  gap: 4px;
  min-height: 72px;
  padding: 17px 54px 17px 20px;
  list-style: none;
}

.error-ledger-item summary::-webkit-details-marker {
  display: none;
}

.error-ledger-item summary::after {
  position: absolute;
  top: 50%;
  right: 21px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1;
  content: "+";
  transform: translateY(-50%);
}

.error-ledger-item[open] summary::after {
  content: "−";
}

.error-ledger-item summary span {
  color: var(--color-text);
  font-weight: 800;
}

.error-ledger-item summary small {
  color: var(--color-text-muted);
  font-size: 12px;
}

.error-ledger-item > div {
  padding: 0 20px 20px;
  color: var(--color-text-muted);
}

.error-ledger-item p {
  margin: 0;
}

.check-sequence {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
}

.check-sequence section {
  padding: 27px 29px;
  border-bottom: 1px dashed var(--color-paper-line);
}

.check-sequence section:nth-child(odd) {
  border-right: 1px dashed var(--color-paper-line);
}

.check-sequence section:last-child {
  grid-column: 1 / -1;
  border-bottom: 0;
  border-right: 0;
}

.check-sequence-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.check-sequence h3 {
  margin: 9px 0;
  color: var(--color-ink);
  font-size: 19px;
}

.check-sequence p {
  margin: 0;
  color: var(--color-ink-muted);
}

.stream-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 34px;
  padding: clamp(28px, 5vw, 50px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-soft);
}

.stream-next h2 {
  margin-bottom: 10px;
  font-size: clamp(28px, 4vw, 42px);
}

.stream-next p {
  max-width: 700px;
  margin: 0;
  color: var(--color-text-muted);
}

.stream-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

  .stream-board {
    max-width: 720px;
  }

  .stream-next {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .stream-board::before,
  .stream-board::after {
    transform: none;
  }

  .scope-ledger-row,
  .quality-sheet-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

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

  .check-sequence {
    grid-template-columns: 1fr;
  }

  .check-sequence section,
  .check-sequence section:nth-child(odd),
  .check-sequence section:last-child {
    grid-column: auto;
    border-right: 0;
    border-bottom: 1px dashed var(--color-paper-line);
  }

  .check-sequence section:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 640px) {
  .stream-hero {
    padding-top: 46px;
    padding-bottom: 68px;
  }

  .stream-fact-list {
    grid-template-columns: 1fr;
  }

  .stream-board {
    padding: 22px 18px;
  }

  .stream-board-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .stream-board-head .status-badge {
    margin-left: 0;
  }

  .stream-check-row {
    grid-template-columns: 1fr auto;
    gap: 6px 12px;
  }

  .stream-check-key {
    grid-column: 1 / -1;
  }

  .scope-ledger-row,
  .quality-sheet-row,
  .check-sequence section {
    padding: 23px 21px;
  }

  .ip-compare section {
    padding: 23px 21px;
  }

  .stream-next-links {
    flex-direction: column;
  }

  .stream-next-links a {
    width: 100%;
  }
}