:root {
  --bg: #f6f7f9; --surface: #ffffff; --text: #1f2933; --muted: #6b7280;
  --border: #e5e7eb; --accent: #2563eb; --accent-soft: #dbeafe; --danger: #b91c1c; --ok: #15803d;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 var(--font); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 0 24px; height: 56px;
  background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { font-weight: 600; color: var(--text); }
.topbar nav { display: flex; gap: 20px; align-items: center; }
.inline { display: inline; }
button.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }
.container { max-width: 1100px; margin: 24px auto; padding: 0 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 20px; margin-bottom: 20px; }
.narrow { max-width: 420px; margin: 60px auto; }
h1 { font-size: 22px; margin: 0 0 12px; }
h2 { font-size: 17px; margin: 0 0 12px; }
label { display: block; font-weight: 500; margin: 12px 0 4px; }
input[type=number], input[type=password], input[type=text], select {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font: inherit; }
input[type=range] { width: 100%; }
.field-row { display: grid; grid-template-columns: 1fr 110px; gap: 12px; align-items: center; }
.field-error { color: var(--danger); font-size: 13px; margin-top: 4px; }
button.primary { margin-top: 16px; background: var(--accent); color: #fff; border: 0; border-radius: 6px;
  padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer; }
.error { color: var(--danger); }
.banner-ok { background: #dcfce7; color: var(--ok); padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; }
.muted { color: var(--muted); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th a { color: var(--text); }
th.active a { color: var(--accent); }
td.num, th.num { text-align: right; }
.table-wrap { overflow-x: auto; }
.toolbar { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
.toolbar select { width: auto; }
.sparkline .spark-base { stroke: var(--border); stroke-width: 1; }
.sparkline .spark-tick { fill: var(--accent); }
.chart { width: 100%; min-height: 320px; }
.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }
details summary { cursor: pointer; font-weight: 500; margin: 16px 0 8px; }
.preview-list { columns: 3; column-gap: 20px; margin: 8px 0 0; padding: 0; list-style: none; font-size: 14px; }
.preview-list li { break-inside: avoid; }
a.button { display: inline-block; margin-top: 16px; background: var(--accent); color: #fff; border-radius: 6px;
  padding: 10px 16px; font-weight: 600; }
a.button:hover { text-decoration: none; opacity: .92; }
.user-label { font-size: 14px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
label.check { display: flex; align-items: center; gap: 8px; }
label.check input { width: auto; margin: 0; }
@media (max-width: 800px) { .grid-4 { grid-template-columns: 1fr 1fr; } }
.add-row { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.add-row input[type=text] { width: 160px; text-transform: uppercase; }
button.compact { margin-top: 0; padding: 7px 12px; }