:root {
  --indigo: #4f46e5;
  --violet: #7c3aed;
  --grad: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --bg: #f4f5fb;
  --card: #ffffff;
  --text: #1e2233;
  --muted: #6b7280;
  --line: #e5e7eb;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(79, 70, 229, .08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px; min-height: 100vh;
  display: flex; flex-direction: column;
}
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 40px; height: 40px; border-radius: 10px; background: var(--grad);
  color: #fff; display: grid; place-items: center; font-size: 18px;
  box-shadow: 0 4px 14px rgba(124,58,237,.35);
}
.brand-name { font-weight: 700; font-size: 16px; }
.tag {
  background: var(--grad); color: #fff; font-size: 10px; font-weight: 600;
  padding: 2px 8px; border-radius: 20px; vertical-align: 2px; margin-left: 4px;
}
.brand-sub { color: var(--muted); font-size: 12px; }
.top-right { display: flex; align-items: center; gap: 10px; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  text-decoration: none; color: var(--text); font-weight: 500;
  padding: 7px 14px; border-radius: 8px;
}
.nav a.on { background: var(--grad); color: #fff; }
.lang-btn {
  border: 1px solid var(--line); background: #fff; color: var(--text);
  padding: 6px 12px; border-radius: 20px; font-size: 12px; font-weight: 600;
  cursor: pointer; transition: .15s; white-space: nowrap;
}
.lang-btn:hover { border-color: var(--indigo); color: var(--indigo); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.wrap {
  width: 1080px; max-width: 96vw; margin: 26px auto 40px; flex: 1;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; margin-bottom: 18px;
}
.head-card {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
h2 { font-size: 19px; margin-bottom: 4px; }
h3 { font-size: 15px; margin-bottom: 12px; }
.muted { color: var(--muted); }
.err { color: var(--red); min-height: 18px; margin-top: 8px; font-size: 13px; }
.auth-card { max-width: 420px; margin: 60px auto; }
.auth-card h1 { font-size: 22px; margin-bottom: 6px; }
label { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin: 14px 0 6px; }
input, select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 14px; outline: none; background: #fff;
}
input:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn {
  border: none; cursor: pointer; font-size: 14px; font-weight: 600;
  padding: 10px 18px; border-radius: 9px; transition: .15s;
}
.btn.primary { background: var(--grad); color: #fff; box-shadow: 0 4px 14px rgba(79,70,229,.3); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: #fff; border: 1px solid var(--line); color: var(--text); }
.btn.ghost:hover { border-color: var(--indigo); color: var(--indigo); }
.btn.small { padding: 7px 12px; font-size: 13px; width: auto; }
.btn.danger { background: #fef2f2; color: var(--red); border: 1px solid #fecaca; }
.btn.ok { background: #f0fdf4; color: var(--green); border: 1px solid #bbf7d0; }
.tbl { width: 100%; border-collapse: collapse; }
.tbl th {
  text-align: left; font-size: 12px; color: var(--muted); font-weight: 600;
  padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.tbl td { padding: 10px; border-bottom: 1px solid #f1f2f6; vertical-align: middle; }
.tbl tr:hover td { background: #fafaff; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.b-active { background: #ecfdf5; color: var(--green); }
.b-pending { background: #fffbeb; color: var(--amber); }
.b-removed { background: #f3f4f6; color: var(--muted); }
.b-offline { background: #fef2f2; color: var(--red); }
.mono { font-family: Consolas, Menlo, monospace; font-size: 12px; }
.keycode {
  display: block; background: #0f172a; color: #e2e8f0; padding: 12px 14px;
  border-radius: 9px; font-family: Consolas, Menlo, monospace;
  word-break: break-all; margin-bottom: 12px; font-size: 13px;
}
.cmdline {
  background: #f8fafc; border: 1px solid var(--line); border-radius: 9px;
  padding: 12px; font-family: Consolas, Menlo, monospace; font-size: 13px;
  overflow-x: auto; margin: 10px 0;
}
.filter-row { display: flex; gap: 6px; align-items: center; margin-bottom: 12px; }
.chip {
  text-decoration: none; color: var(--text); padding: 5px 13px; border-radius: 20px;
  border: 1px solid var(--line); font-size: 13px;
}
.chip.on { background: var(--grad); color: #fff; border-color: transparent; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
@media (max-width: 860px) { .grid2 { grid-template-columns: 1fr; } }
.link { color: var(--indigo); cursor: pointer; text-decoration: none; font-weight: 600; }
.link:hover { text-decoration: underline; }
.mini-btn { border:1px solid var(--line); background:#fff; border-radius:7px; padding:4px 9px; font-size:12px; cursor:pointer; }
.mini-btn:hover { border-color: var(--indigo); color: var(--indigo); }
#countryDist span {
  display: inline-block; margin: 3px; padding: 3px 10px; background: #eef2ff;
  color: var(--indigo); border-radius: 14px; font-size: 12px; font-weight: 600;
}
.foot {
  text-align: center; color: var(--muted); font-size: 12px;
  padding: 18px; border-top: 1px solid var(--line);
}