:root {
  --bg: #f4f6fb;
  --card: #fff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --blue: #2563eb;
  --red: #dc2626;
  --green: #059669;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; font: 14px/1.5 "Microsoft YaHei", "Segoe UI", sans-serif; color: var(--text); background: var(--bg); }
button, input { font: inherit; }
button { cursor: pointer; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 8px 14px; }
button.primary { background: var(--blue); color: #fff; border-color: var(--blue); }
button.ghost { background: transparent; }
button.danger { color: var(--red); border-color: #fecaca; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.hint { color: var(--muted); font-size: 13px; }
.err { color: var(--red); min-height: 1.2em; margin-top: 8px; }
code { background: #eef2ff; padding: 1px 6px; border-radius: 4px; }

.login { min-height: 100%; display: grid; place-items: center; }
.login-card { width: min(420px, 92vw); display: grid; gap: 12px; }
.login-card h1 { margin: 0; font-size: 22px; }
.login-card p { margin: 0 0 8px; color: var(--muted); }

#app { display: grid; grid-template-columns: 220px 1fr; min-height: 100%; }
aside { background: #111827; color: #e5e7eb; padding: 20px 14px; display: flex; flex-direction: column; gap: 8px; }
.brand { font-weight: 800; padding: 6px 10px 16px; }
aside nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
aside nav button { text-align: left; background: transparent; color: #d1d5db; border: 0; border-radius: 8px; flex: 0 0 auto; }
aside nav button.on { background: #1f2937; color: #fff; }
aside #logout { margin-top: auto; color: #9ca3af; border-color: #374151; }
main { padding: 28px 32px; overflow: auto; }
h2 { margin: 0 0 16px; }
h3 { margin: 24px 0 10px; font-size: 15px; }

.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.kpi { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.kpi b { display: block; font-size: 22px; }
.kpi span { color: var(--muted); font-size: 12px; }

.row-between { display: flex; justify-content: space-between; align-items: center; }
.table-wrap { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); font-size: 13px; vertical-align: middle; }
th { color: var(--muted); font-weight: 600; }
.key { font-family: ui-monospace, Consolas, monospace; font-size: 12px; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.btn-mini { padding: 4px 8px; margin-right: 4px; }

.form { display: grid; gap: 12px; max-width: 640px; }
label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
input { border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.btn-row { display: flex; gap: 8px; }
.sub-block { background: #f8fafc; border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.sub-block h4 { margin: 0 0 10px; font-size: 13px; }
#preset-body tr.selected { background: #dbeafe; }
.form-wide { max-width: none !important; }
.ch-editor-empty { display: grid; place-items: center; min-height: 260px; color: var(--muted); font-size: 14px; text-align: center; }

.modal { position: fixed; inset: 0; background: rgba(15,23,42,.4); display: grid; place-items: center; }
[hidden] { display: none !important; }
.modal[hidden] { display: none !important; }
.modal .card { width: min(440px, 92vw); }
.models-layout { display: grid; grid-template-columns: 260px 1fr; gap: 16px; align-items: start; }
.ch-side { display: flex; flex-direction: column; gap: 8px; }
.ch-item { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px; cursor: pointer; }
.ch-item.on { border-color: var(--blue); box-shadow: 0 0 0 3px #dbeafe; }
.ch-item b { display: block; }
.ch-item span { color: var(--muted); font-size: 12px; }
.ch-editor { max-width: none !important; }
@media (max-width: 900px) {
  .models-layout { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  #app { grid-template-columns: 1fr; }
  aside { flex-direction: row; align-items: center; }
  aside nav { display: flex; flex: 1; }
  .kpis, .grid3 { grid-template-columns: 1fr 1fr; }
}