* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: #f4f6fb;
  color: #1f2430;
}
.wrap {
  max-width: 760px;
  margin: 24px auto;
  padding: 0 12px;
}
h1 { margin-bottom: 12px; }
.card {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}
.hidden { display: none; }
label { display: block; margin: 10px 0 6px; }
input {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid #ced4e0;
  border-radius: 8px;
}
button {
  margin-top: 10px;
  padding: 9px 14px;
  border: none;
  border-radius: 8px;
  background: #2869ff;
  color: #fff;
  cursor: pointer;
}
button.secondary { background: #5b6475; }
button.danger { background: #d94a4a; margin-top: 0; }
.row { display: flex; gap: 8px; }
.file-btn {
  margin-top: 10px;
  padding: 9px 14px;
  border: none;
  border-radius: 8px;
  background: #5b6475;
  color: #fff;
  cursor: pointer;
}
.msg { min-height: 20px; color: #d94a4a; }
.topbar { display: flex; justify-content: space-between; align-items: center; }
.tabs { display: flex; gap: 8px; margin: 14px 0; }
.tab { background: #d9dfed; color: #1f2430; }
.tab.active { background: #2869ff; color: #fff; }
.panel { border-top: 1px solid #e8edf7; padding-top: 10px; }
.target-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.summary {
  background: #f6f8fd;
  border: 1px solid #dce3f2;
  border-radius: 8px;
  padding: 10px;
  white-space: pre-wrap;
}