.streaming-hero{
  padding-top:clamp(46px,7vw,86px);
  padding-bottom:clamp(54px,8vw,96px);
}
.streaming-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(420px,1.08fr);
  align-items:center;
  gap:clamp(38px,6vw,78px);
  text-align:left;
}
.streaming-hero-copy{
  min-width:0;
}
.streaming-hero .hero-title{
  margin-top:20px;
  max-width:620px;
}
.streaming-hero .hero-copy{
  max-width:650px;
  margin-inline:0;
}
.streaming-hero .hero-actions,
.streaming-hero .trust-row,
.streaming-hero .fact-row{
  justify-content:flex-start;
}
.streaming-board{
  position:relative;
  min-width:0;
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  background:var(--color-page);
  box-shadow:var(--shadow-window);
  overflow:clip;
}
.streaming-board::before{
  content:"";
  position:absolute;
  width:260px;
  height:260px;
  top:-150px;
  right:-80px;
  border-radius:50%;
  background:var(--color-brand-soft);
  pointer-events:none;
}
.streaming-board-head{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  gap:8px;
  min-height:48px;
  padding:10px 16px;
  border-bottom:1px solid var(--color-line);
  background:var(--color-panel);
}
.board-dots{
  display:flex;
  gap:6px;
}
.streaming-board-title{
  margin-left:6px;
  color:var(--color-muted);
  font-family:var(--font-mono);
  font-size:.76rem;
}
.streaming-board-head .badge{
  margin-left:auto;
}
.streaming-board-body{
  padding:clamp(22px,4vw,36px);
}
.media-service-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:28px;
}
.media-service-list span{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:4px 11px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-pill);
  background:var(--color-panel);
  color:var(--color-muted);
  font-size:.74rem;
  font-weight:700;
}
.selection-flow{
  display:grid;
  gap:10px;
}
.selection-node{
  display:flex;
  align-items:center;
  gap:14px;
  padding:14px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  background:var(--color-page);
}
.selection-node.is-emphasis{
  border-color:var(--color-brand);
  background:var(--color-brand-soft);
}
.selection-icon{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  flex-shrink:0;
  border-radius:var(--radius-sm);
  background:var(--color-panel);
  color:var(--color-brand-deep);
}
.selection-icon svg{
  width:24px;
  height:24px;
}
.selection-node strong,
.selection-node small{
  display:block;
}
.selection-node strong{
  font-size:.92rem;
}
.selection-node small{
  margin-top:2px;
  color:var(--color-muted);
  font-size:.75rem;
}
.flow-line{
  width:1px;
  height:16px;
  margin-left:35px;
  background:var(--color-line);
}
.board-note{
  margin:24px 0 0;
  padding-top:18px;
  border-top:1px solid var(--color-line);
  color:var(--color-muted);
  font-size:.82rem;
}
.streaming-table{
  width:100%;
  min-width:840px;
}
.streaming-table caption{
  padding:14px 16px;
  border-bottom:1px solid var(--color-line);
  background:var(--color-page);
  color:var(--color-muted);
  font-size:.82rem;
  text-align:left;
}
.streaming-table th,
.streaming-table td{
  padding:15px 16px;
  border-bottom:1px solid var(--color-line);
  text-align:left;
  vertical-align:middle;
}
.streaming-table th{
  background:var(--color-panel);
  font-size:.82rem;
  font-weight:800;
  white-space:nowrap;
}
.streaming-table td:first-child{
  font-weight:750;
  white-space:nowrap;
}
.streaming-table tr:last-child td{
  border-bottom:0;
}
.streaming-status{
  display:inline-flex;
  max-width:100%;
  padding:4px 10px;
  border-radius:var(--radius-pill);
  background:var(--color-success-soft);
  color:var(--color-success);
  font-size:.76rem;
  font-weight:700;
}
.streaming-callout{
  max-width:900px;
  margin:28px auto 0;
}
.streaming-tint{
  border-top:1px solid var(--color-line);
  border-bottom:1px solid var(--color-line);
  background:var(--color-panel);
}
.explain-grid,
.ip-layout{
  display:grid;
  grid-template-columns:minmax(0,1.04fr) minmax(360px,.96fr);
  align-items:center;
  gap:clamp(36px,7vw,88px);
}
.explain-copy h2,
.ip-copy h2{
  margin-top:16px;
}
.explain-copy p,
.ip-copy p{
  color:var(--color-muted);
}
.concept-panel{
  display:grid;
  gap:10px;
  padding:18px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  background:var(--color-page);
  box-shadow:var(--shadow-card);
}
.concept-row{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:15px;
  border-radius:var(--radius-md);
  background:var(--color-panel);
}
.concept-mark{
  display:grid;
  place-items:center;
  width:46px;
  height:38px;
  flex-shrink:0;
  border:1px solid var(--color-route);
  border-radius:var(--radius-sm);
  background:var(--color-route-soft);
  color:var(--color-ink);
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:800;
}
.concept-row strong{
  display:block;
  margin-bottom:3px;
}
.concept-row p{
  margin:0;
  color:var(--color-muted);
  font-size:.82rem;
}
.ip-visual{
  min-width:0;
  padding:clamp(20px,4vw,34px);
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  background:var(--color-panel);
}
.ip-card{
  padding:22px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  background:var(--color-page);
  box-shadow:var(--shadow-card);
}
.ip-card strong{
  display:block;
  margin:14px 0 6px;
  font-family:var(--font-display);
  font-size:1.15rem;
}
.ip-card p{
  margin:0;
  color:var(--color-muted);
  font-size:.86rem;
}
.ip-bridge{
  display:grid;
  place-items:center;
  height:76px;
  color:var(--color-brand);
}
.ip-bridge svg{
  width:180px;
  max-width:80%;
}
.quality-list{
  display:grid;
  max-width:920px;
  margin-inline:auto;
  border-top:1px solid var(--color-line);
}
.quality-item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:20px;
  padding:28px 0;
  border-bottom:1px solid var(--color-line);
}
.quality-symbol{
  display:grid;
  place-items:center;
  width:50px;
  height:50px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  background:var(--color-page);
  color:var(--color-brand-deep);
}
.quality-symbol svg{
  width:27px;
  height:27px;
}
.quality-item h3{
  margin-bottom:8px;
  font-size:1.18rem;
}
.quality-item p{
  margin:0;
  color:var(--color-muted);
}
.error-guide{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.error-card{
  min-width:0;
  padding:26px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  background:var(--color-page);
  box-shadow:var(--shadow-card);
}
.error-card-head{
  display:flex;
  align-items:center;
  gap:11px;
}
.error-card-head h3{
  margin:0;
  font-size:1.08rem;
}
.error-dot{
  width:10px;
  height:10px;
  flex-shrink:0;
  border-radius:50%;
  background:var(--color-warning);
}
.error-card p{
  margin:15px 0 0;
  color:var(--color-muted);
}
.diagnostic-panel{
  display:grid;
  grid-template-columns:minmax(190px,.35fr) minmax(0,1fr);
  gap:36px;
  margin-top:34px;
  padding:clamp(24px,4vw,38px);
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  background:var(--color-panel);
}
.diagnostic-panel h3{
  margin:0;
}
.diagnostic-steps{
  display:grid;
  gap:22px;
  margin:0;
  padding:0;
  list-style:none;
  counter-reset:diagnostic;
}
.diagnostic-steps li{
  position:relative;
  min-width:0;
  padding-left:46px;
  counter-increment:diagnostic;
}
.diagnostic-steps li::before{
  content:counter(diagnostic);
  position:absolute;
  top:0;
  left:0;
  display:grid;
  place-items:center;
  width:30px;
  height:30px;
  border-radius:50%;
  background:var(--color-brand-soft);
  color:var(--color-brand-deep);
  font-family:var(--font-mono);
  font-size:.8rem;
  font-weight:800;
}
.diagnostic-steps strong{
  display:block;
  margin-bottom:4px;
}
.diagnostic-steps p{
  margin:0;
  color:var(--color-muted);
}
.practice-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  border-top:1px solid var(--color-line);
  border-left:1px solid var(--color-line);
}
.practice-item{
  min-width:0;
  padding:clamp(24px,4vw,36px);
  border-right:1px solid var(--color-line);
  border-bottom:1px solid var(--color-line);
  background:var(--color-page);
}
.practice-item h3{
  margin-bottom:12px;
  font-size:1.12rem;
}
.practice-item p{
  margin:0;
  color:var(--color-muted);
}
.next-links{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:40px;
  padding:clamp(28px,5vw,48px);
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  background:var(--color-panel);
}
.next-links h2{
  margin:16px 0 10px;
  font-size:clamp(28px,3.5vw,40px);
}
.next-links p{
  max-width:720px;
  margin:0;
  color:var(--color-muted);
}

@media (max-width:980px){
  .streaming-hero-grid{
    grid-template-columns:1fr;
    text-align:center;
  }
  .streaming-hero .hero-title,
  .streaming-hero .hero-copy{
    margin-inline:auto;
  }
  .streaming-hero .hero-actions,
  .streaming-hero .trust-row,
  .streaming-hero .fact-row{
    justify-content:center;
  }
  .streaming-board{
    width:100%;
    max-width:720px;
    margin-inline:auto;
    text-align:left;
  }
  .explain-grid,
  .ip-layout{
    grid-template-columns:1fr;
  }
  .ip-visual{
    order:2;
  }
  .next-links{
    grid-template-columns:1fr;
  }
}
@media (max-width:768px){
  .error-guide,
  .practice-grid{
    grid-template-columns:1fr;
  }
  .diagnostic-panel{
    grid-template-columns:1fr;
    gap:24px;
  }
  .next-links{
    gap:26px;
  }
}
@media (max-width:640px){
  .streaming-hero{
    padding-top:34px;
    padding-bottom:58px;
  }
  .streaming-board-body{
    padding:18px;
  }
  .streaming-board-head .badge{
    display:none;
  }
  .media-service-list{
    gap:6px;
  }
  .selection-node{
    padding:12px;
  }
  .selection-icon{
    width:38px;
    height:38px;
  }
  .concept-panel,
  .ip-visual{
    padding:12px;
  }
  .concept-row{
    padding:13px;
  }
  .quality-item{
    grid-template-columns:1fr;
    gap:14px;
  }
  .error-card{
    padding:21px;
  }
  .practice-grid{
    border-left:0;
  }
  .practice-item{
    border-left:1px solid var(--color-line);
  }
  .next-links{
    padding:24px;
  }
  .next-links .actions{
    width:100%;
  }
}