* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0b1020;
  color: #f1f5f9;
  font-family: Arial, Helvetica, sans-serif;
}

.app {
  width: min(1160px, 96%);
  margin: 0 auto;
  padding: 22px 0 28px;
}

header {
  margin-bottom: 16px;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3vw, 32px);
}

header p {
  margin: 0;
  color: #aebdd0;
  font-size: 15px;
  line-height: 1.5;
}

.diagram {
  background: #111b2d;
  border: 1px solid #29374d;
  border-radius: 14px;
  padding: 10px;
}

#sound-svg {
  display: block;
  width: 100%;
  height: auto;
  background: #091323;
  border-radius: 10px;
}

.info {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.definition {
  background: #111b2d;
  border: 1px solid #29374d;
  border-radius: 12px;
  padding: 15px 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.definition strong {
  color: #7dd3fc;
  font-size: 16px;
}

.definition span {
  color: #cbd5e1;
  font-size: 14px;
  line-height: 1.5;
}

@media (max-width: 600px) {
  .app {
    width: 98%;
    padding-top: 12px;
  }

  .diagram {
    padding: 5px;
  }

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