:root {
  --bg: #f6f7f9; --card: #fff; --text: #1f2328; --muted: #6b7280; --line: #e5e7eb;
  --primary: #2563eb; --primary-weak: #eff4ff; --danger: #dc2626; --ok: #16a34a; --warn: #d97706;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.6 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: ui-monospace, Consolas, "Courier New", monospace; font-size: 13px; }
pre { background: #0f172a; color: #e2e8f0; padding: 12px 14px; border-radius: 8px; overflow-x: auto; margin: 8px 0; }

.topbar { background: #111827; color: #fff; }
.topbar .inner { max-width: 1180px; margin: 0 auto; padding: 0 16px; display: flex; align-items: center; gap: 20px; height: 54px; flex-wrap: wrap; }
.topbar .brand { font-weight: 700; font-size: 16px; color: #fff; }
.topbar nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.topbar nav a { color: #cbd5e1; padding: 6px 10px; border-radius: 6px; }
.topbar nav a:hover, .topbar nav a.active { background: #1f2937; color: #fff; text-decoration: none; }
.topbar .user { color: #9ca3af; display: flex; gap: 10px; align-items: center; }
.topbar .user button { background: none; border: 1px solid #374151; color: #d1d5db; padding: 3px 10px; border-radius: 6px; cursor: pointer; }

main { max-width: 1180px; margin: 24px auto; padding: 0 16px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin-bottom: 18px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 18px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 13px; background: #fafbfc; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

form.inline { display: inline; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
input, select { padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 6px; font: inherit; background: #fff; min-width: 0; }
input:focus, select:focus { outline: 2px solid var(--primary-weak); border-color: var(--primary); }
.field { margin-bottom: 14px; }
.field input { width: 100%; }
button, .btn { display: inline-block; padding: 8px 16px; border: 0; border-radius: 6px; background: var(--primary); color: #fff; font: inherit; cursor: pointer; }
button:hover, .btn:hover { filter: brightness(1.08); text-decoration: none; }
button.secondary { background: #fff; color: var(--text); border: 1px solid #d1d5db; }
button.danger { background: var(--danger); }
button.link { background: none; color: var(--primary); padding: 0; }
button.link.danger { color: var(--danger); background: none; }

.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }
.alert.ok { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert.err { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert.warn { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.tag { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; background: #f3f4f6; color: #374151; }
.tag.ok { background: #dcfce7; color: #166534; }
.tag.off { background: #fee2e2; color: #991b1b; }
.tag.warn { background: #fef3c7; color: #92400e; }
.neg { color: var(--danger); }
.pos { color: var(--ok); }

.pager { display: flex; gap: 12px; align-items: center; margin-top: 12px; }
.auth { max-width: 380px; margin: 80px auto; }
.auth .card { padding: 28px; }
.auth h1 { text-align: center; }
.auth button { width: 100%; padding: 10px; }
.keybox { background: var(--primary-weak); border: 1px dashed var(--primary); padding: 12px; border-radius: 8px; word-break: break-all; }
textarea { width: 100%; font-family: ui-monospace, Consolas, monospace; padding: 8px; border: 1px solid #d1d5db; border-radius: 6px; }