* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
  background: linear-gradient(135deg, #eef2f7, #e2ebf5);
  color: #0f172a;
}

.page {
  min-height: 100vh;
  padding: 18px;
}

.header h1 {
  margin: 0 0 6px;
  font-size: 28px;
}

.header p {
  margin: 0 0 14px;
  color: #475569;
}

.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}

.top-row {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 16px;
  align-items: stretch;
}

.card {
  background: #fff;
  border: 1px solid #d8e4f0;
  border-radius: 14px;
  padding: 14px;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 18px;
}

.control,
.video {
  min-height: 560px;
}

.control {
  display: flex;
  flex-direction: column;
}

.video {
  display: flex;
  flex-direction: column;
}

.drive-layout {
  display: grid;
  grid-template-columns: 100px 100px 100px 80px 150px 150px;
  gap: 10px;
  align-items: stretch;
  overflow-x: auto;
  padding-bottom: 4px;
}

.drive-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 350px;
}

.drive-col.offset-down {
  padding-top: 110px;
}

.drive-col.speed-col {
  align-items: center;
}

.drive-col.action-col label {
  display: grid;
  gap: 6px;
}

.drive-btn,
.field-group button,
#toggleReceiverBtn {
  border: none;
  border-radius: 10px;
  background: linear-gradient(180deg, #0ea5e9, #0284c7);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  min-height: 42px;
  transition: transform 0.05s ease;
}

.drive-btn:active,
.field-group button:active,
#toggleReceiverBtn:active {
  transform: translateY(1px);
}

.drive-btn.lg {
  min-height: 100px;
  font-size: 42px;
}

.drive-btn.md {
  min-height: 100px;
  font-size: 36px;
}

.drive-btn.tile {
  min-height: 100px;
  font-size: 24px;
}

.vertical-slider {
  writing-mode: vertical-lr;
  direction: rtl;
  width: 36px;
  min-height: 300px;
}

.mini-title {
  color: #64748b;
  font-size: 12px;
  font-weight: 700;
}

.drive-col strong {
  color: #0369a1;
  font-size: 15px;
}

.control-status {
  margin-top: auto;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
}

.video img {
  width: 100%;
  min-height: 330px;
  max-height: 520px;
  border-radius: 10px;
  border: 1px solid #334155;
  background: #0f172a;
  object-fit: contain;
}

.network-row {
  display: grid;
  grid-template-columns: 1.2fr 1.2fr 0.9fr 0.8fr;
  gap: 12px;
  align-items: stretch;
}

.side .field-group {
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 0;
}

.field-group h3 {
  margin: 0 0 8px;
  font-size: 14px;
}

.field-group button + button {
  margin-top: 8px;
}

.field-group label {
  display: grid;
  gap: 6px;
  margin-bottom: 8px;
  color: #334155;
}

.field-group input[type="text"],
.field-group input[type="number"] {
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 8px 10px;
}

.field-group .inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
}

.status p {
  margin: 4px 0;
}

.backend-line {
  margin: 8px 0 0;
  color: #475569;
  font-size: 13px;
}

.toast {
  min-height: 20px;
  color: #b91c1c;
  margin-top: 8px;
  font-size: 13px;
}

@media (max-width: 1200px) {
  .top-row {
    grid-template-columns: 1fr;
  }

  .network-row {
    grid-template-columns: 1fr;
  }

  .control,
  .video {
    min-height: unset;
  }

  .drive-layout {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }

  .drive-col {
    min-height: unset;
  }

  .drive-col.offset-down {
    padding-top: 0;
  }

  .drive-btn.lg,
  .drive-btn.md,
  .drive-btn.tile {
    min-height: 72px;
    font-size: 28px;
  }

  .vertical-slider {
    writing-mode: horizontal-tb;
    direction: ltr;
    min-height: unset;
    width: 100%;
  }
}