:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --line: #e5e9f0;
  --txt: #1f2d3d;
  --sub: #6b7a8d;
  --brand: #16a34a;
  --brand-d: #12833c;
  --bad: #e11d48;
  --warn: #d97706;
  --ok: #15803d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font: 14px/1.6 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

code, .mono, pre {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}

/* topbar */
.topbar {
  display: flex; align-items: center; gap: 22px;
  padding: 0 22px; height: 58px; background: #fff;
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 9;
}
.brand { font-weight: 700; font-size: 16px; letter-spacing: .3px; }
.brand .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); margin-left: 8px; vertical-align: 2px; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav-item {
  padding: 7px 13px; border-radius: 8px; color: var(--sub); text-decoration: none; font-size: 13.5px;
}
.nav-item:hover { background: #f0fdf4; color: var(--brand-d); }
.nav-item.active { background: #e9fbf0; color: var(--brand-d); font-weight: 600; }
.right { display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: var(--sub); }
.logout { color: var(--sub); text-decoration: none; }
.logout:hover { color: var(--bad); }

.wrap { max-width: 1360px; margin: 0 auto; padding: 20px 22px 40px; }
.foot { text-align: center; color: #9aa7b5; font-size: 12px; padding: 18px 0 30px; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-bottom: 16px; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; margin-bottom: 16px;
}
.grid .card { margin-bottom: 0; }
.card-hd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--line); background: #fbfcfd;
}
.card-hd h3 { margin: 0; font-size: 13.5px; font-weight: 600; }
.card-bd { padding: 14px 16px; }

.kv { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; font-size: 13px; }
.kv span { color: var(--sub); }
.kv b { font-weight: 600; text-align: right; }
.big { font-size: 28px; font-weight: 700; color: var(--brand-d); line-height: 1.2; margin-bottom: 6px; }
.muted { color: var(--sub); }
.small { font-size: 12px; }
.center { text-align: center; }

/* tags */
.tag { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; line-height: 1.7; }
.tag.ok { background: #e9fbf0; color: var(--ok); }
.tag.bad { background: #fdecef; color: var(--bad); }
.tag.warn { background: #fff7e6; color: var(--warn); }

/* split layout */
.split { display: grid; grid-template-columns: 1fr 360px; gap: 16px; align-items: start; }
@media (max-width: 1100px) { .split { grid-template-columns: 1fr; } }

/* forms */
.form { display: flex; flex-direction: column; gap: 10px; }
.form label { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: var(--sub); }
.form input, .form select, .form textarea {
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-size: 13px;
  color: var(--txt); background: #fff; outline: none;
}
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--brand); }
.form textarea { resize: vertical; }
.hint { font-size: 11.5px; color: #9aa7b5; }

.caps { border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
.caps-t { font-size: 12.5px; color: var(--sub); margin-bottom: 8px; }
.chk { display: flex !important; flex-direction: row !important; align-items: center; gap: 6px; font-size: 12.5px; padding: 3px 0; color: var(--txt); }
.chk input { width: auto; }

.btn {
  border: 1px solid var(--line); background: #fff; color: var(--txt); border-radius: 8px;
  padding: 7px 14px; font-size: 13px; cursor: pointer;
}
.btn:hover { border-color: var(--brand); color: var(--brand-d); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-d); }
.btn.mini { padding: 3px 9px; font-size: 12px; }
.btn.danger:hover { border-color: var(--bad); color: var(--bad); }

.inline-form { display: flex; gap: 8px; align-items: end; margin: 0; }
.inline-form label { display: flex; flex-direction: column; font-size: 12px; color: var(--sub); }
.inline-form input { border: 1px solid var(--line); border-radius: 8px; padding: 5px 8px; }

/* table */
.table-wrap { overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.tbl th {
  text-align: left; padding: 8px 10px; color: var(--sub); font-weight: 600;
  border-bottom: 1px solid var(--line); background: #fbfcfd; white-space: nowrap;
}
.tbl td { padding: 9px 10px; border-bottom: 1px solid #f1f4f8; vertical-align: middle; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl.slim th, .tbl.slim td { padding: 7px 8px; }
.ops { white-space: nowrap; }
.ops form { display: flex; gap: 6px; margin: 0; }

/* notices */
.notice { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--brand); border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; font-size: 13px; }
.notice.ok { border-left-color: var(--ok); background: #f5fdf9; }
.notice.bad { border-left-color: var(--bad); background: #fff7f8; }
.intro { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 13px 16px; margin-bottom: 16px; font-size: 13px; line-height: 1.9; }
.intro code, .code { background: #f3f5f8; padding: 1px 6px; border-radius: 4px; }
pre.code { padding: 12px; overflow-x: auto; font-size: 12px; line-height: 1.7; border-radius: 8px; border: 1px solid var(--line); background: #fbfcfd; }

.keybox .keyline {
  display: flex; align-items: center; gap: 10px; margin: 8px 0;
  background: #fff; border: 1px dashed var(--brand); border-radius: 8px; padding: 8px 10px;
}
.keyline span { font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; word-break: break-all; flex: 1; }

/* chain */
.chain { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.node {
  flex: 1; min-width: 110px; text-align: center; padding: 12px 8px; border-radius: 10px;
  background: #f6f8fa; border: 1px solid var(--line); font-weight: 600; font-size: 12.5px;
}
.node span { font-weight: 400; font-size: 11px; color: var(--sub); }
.node.on { background: #f1fcf5; border-color: #bde8cb; color: var(--ok); }
.node.off { background: #fff5f6; border-color: #f4c6cf; color: var(--bad); }
.arrow { color: #b9c4d0; }

/* login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(160deg, #f0fdf4, #f5f7fa 55%); }
.login-wrap { width: 340px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 28px; box-shadow: 0 10px 30px rgba(28, 48, 70, .06); }
.login-brand { font-size: 17px; font-weight: 700; }
.login-sub { color: var(--sub); font-size: 12.5px; margin: 2px 0 18px; }
.login-box { display: flex; flex-direction: column; gap: 12px; }
.login-box label { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: var(--sub); }
.login-box input { border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; font-size: 13px; }
.login-box input:focus { border-color: var(--brand); outline: none; }
.login-box .btn { margin-top: 4px; }
.err { color: var(--bad); font-size: 12.5px; }
.tip { color: #9aa7b5; font-size: 11.5px; text-align: center; }