:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-2: #f0f3f9;
  --text: #1f2733;
  --muted: #6b7785;
  --primary: #2563eb;
  --primary-d: #1d4ed8;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --border: #e3e8ef;
  --shadow: 0 6px 24px rgba(20, 30, 50, .08);
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141b; --panel: #161d27; --panel-2: #1d2632; --text: #e7edf5;
    --muted: #8a97a8; --border: #2a3543; --shadow: 0 6px 24px rgba(0,0,0,.35);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5; -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 920px; margin: 0 auto; padding: 24px 18px 60px; }
header.top { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.logo { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), #38bdf8); display: grid; place-items: center; color: #fff; font-weight: 800; }
h1 { font-size: 20px; margin: 0; }
.sub { color: var(--muted); font-size: 13px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; margin-bottom: 16px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
input, select, button { font: inherit; }
input[type=text], input[type=password], input[type=number] {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 10px 12px; outline: none; min-width: 0;
}
input:focus { border-color: var(--primary); }
button {
  cursor: pointer; border: none; border-radius: 10px; padding: 10px 16px; font-weight: 600;
  background: var(--primary); color: #fff; transition: .15s;
}
button:hover { background: var(--primary-d); }
button.ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button.ghost:hover { border-color: var(--primary); }
button.danger { background: var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }
.code-box { font-size: 30px; letter-spacing: 8px; font-weight: 800; color: var(--primary); font-family: ui-monospace, monospace; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--panel-2); color: var(--muted); }
.badge.ok { background: rgba(22,163,74,.12); color: var(--ok); }
.badge.enc { background: rgba(37,99,235,.12); color: var(--primary); }
.badge.warn { background: rgba(217,119,6,.14); color: var(--warn); }
.peer { display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--panel-2); }
.peer .pcb { width: 18px; height: 18px; flex: 0 0 auto; accent-color: var(--primary); cursor: pointer; }
.peer .av { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg,#38bdf8,#2563eb); color:#fff; display:grid; place-items:center; font-weight:700; flex: 0 0 auto; }
.peer .meta { flex: 1; min-width: 0; }
.peer .nm { font-weight: 700; }
.peer .ip { font-size: 12px; color: var(--muted); font-family: ui-monospace, monospace; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 640px){ .grid2 { grid-template-columns: 1fr; } }
.geo { font-size: 12px; color: var(--muted); }
.bar { height: 10px; background: var(--panel-2); border-radius: 999px; overflow: hidden; border:1px solid var(--border); }
.bar > i { display:block; height:100%; width:0; background: linear-gradient(90deg,var(--primary),#38bdf8); transition: width .2s; }
.tx { padding: 12px; border:1px solid var(--border); border-radius:12px; margin-bottom:10px; background: var(--panel-2); }
.muted { color: var(--muted); font-size: 13px; }
.center { text-align: center; }
.hidden { display: none !important; }
.toast-wrap { position: fixed; top: 16px; right: 16px; display: flex; flex-direction: column; gap: 10px; z-index: 50; }
.toast { background: var(--panel); border:1px solid var(--border); box-shadow: var(--shadow); border-radius: 12px; padding: 14px; min-width: 280px; max-width: 340px; }
a { color: var(--primary); }
label { font-size: 13px; color: var(--muted); display:block; margin: 10px 0 4px; }
.hr { height:1px; background: var(--border); margin: 16px 0; }
table { width:100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align:left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight:600; }
.kbd { font-family: ui-monospace, monospace; background: var(--panel-2); border:1px solid var(--border); border-radius:6px; padding:1px 6px; }