:root {
  --primary: #4E73DF;
  --surface: #fff;
  --bg: #F8F9FC;
  --text: #333;
  --muted: #777;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); }
header { background: var(--surface); padding: 12px 16px; border-bottom: 1px solid #e3e6f0; display: flex; align-items: center; justify-content: space-between; }
h1 { margin: 0; font-size: 18px; }
main { padding: 16px; max-width: 1000px; margin: 0 auto; }
.config label { font-size: 12px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
input, select, button { padding: 8px 10px; border: 1px solid #ddd; border-radius: 6px; }
button { background: var(--primary); color: #fff; border: none; cursor: pointer; }
button:hover { filter: brightness(1.05); }
.form { background: var(--surface); padding: 12px; border-radius: 8px; border: 1px solid #e3e6f0; margin-bottom: 16px; }
.form h2 { margin: 0 0 8px 0; font-size: 16px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(180px, 1fr)); gap: 8px; }
table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid #e3e6f0; border-radius: 8px; overflow: hidden; }
th, td { padding: 8px; border-bottom: 1px solid #f0f2f7; }
th { text-align: left; background: #f7f9ff; }
.msg { margin-top: 8px; font-size: 12px; color: var(--muted); }
.actions { display: flex; gap: 6px; }