* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f5f5f5;
  color: #222;
}

.shell {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 16px;
}

.panel {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 24px;
}

.stack {
  display: grid;
  gap: 16px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

label {
  display: grid;
  gap: 8px;
}

input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #bbb;
  border-radius: 4px;
}

button {
  padding: 10px 14px;
  border: 0;
  border-radius: 4px;
  background: #1f6feb;
  color: #fff;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.secondary {
  background: #666;
}

.error {
  color: #b00020;
}

.order-panel {
  margin: 24px 0;
  padding: 16px;
  border: 1px solid #ddd;
  border-radius: 6px;
}

dl {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid #ddd;
  padding: 8px;
  text-align: left;
}

.provider-row {
  display: grid;
  grid-template-columns: 100px repeat(4, minmax(120px, 1fr)) auto;
  gap: 8px;
  align-items: end;
  padding: 12px 0;
  border-bottom: 1px solid #ddd;
}