*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #0f1419;
  color: #f5f5f5;
}

.header {
  padding: 1.5rem 1rem;
  text-align: center;
  border-bottom: 1px solid #2a3441;
  background: #151b23;
}

.header h1 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.streams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 560px), 1fr));
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 1rem 2rem;
}

.stream {
  aspect-ratio: 3 / 2;
  background: #1a222d;
  border: 1px solid #2a3441;
  border-radius: 8px;
  overflow: hidden;
}

.stream iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}