* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, 'Segoe UI', Roboto, sans-serif; background: #f0f2f5; color: #1a1a1a; }
nav { display: flex; align-items: center; gap: 16px; padding: 12px 24px; background: #1c3d5a; color: #fff; border-bottom: 3px solid #b8860b; }
nav a { color: #e8edf3; text-decoration: none; font-size: 14px; }
nav a:hover { color: #fff; text-decoration: underline; }
nav .brand { font-weight: 700; margin-right: 12px; font-size: 15px; }
nav .spacer { flex: 1; }
nav .who { opacity: .8; font-size: 13px; }
main { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.card { background: #fff; border: 1px solid #d9dee5; border-radius: 6px; padding: 20px 24px; margin-bottom: 20px; }
h2 { margin-top: 0; border-bottom: 1px solid #d9dee5; padding-bottom: 10px; color: #1c3d5a; }
h3 { margin-bottom: 8px; color: #1c3d5a; }
.muted { color: #66707a; font-size: 14px; }
code { background: #f4f6f8; padding: 1px 5px; border-radius: 3px; font-size: 90%; }
code.big { font-size: 18px; font-weight: 700; }
code.pw { font-size: 13px; }
.btn { background: #1c3d5a; color: #fff; border: 0; border-radius: 4px; padding: 9px 18px; cursor: pointer; text-decoration: none; display: inline-block; font-size: 14px; }
.btn:hover { background: #152f47; }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.ok { background: #2e6b34; } .btn.ok:hover { background: #235427; }
.btn.rev { background: #8e2323; } .btn.rev:hover { background: #6f1a1a; }
.flash { padding: 10px 14px; border-radius: 4px; margin-bottom: 12px; font-size: 14px; }
.flash.error { background: #fbeaea; color: #8e2323; border: 1px solid #eec2c2; }
.flash.ok { background: #eaf3ea; color: #2e6b34; border: 1px solid #c2ddc4; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; }
.grid .full { grid-column: 1 / -1; }
label { font-size: 14px; }
input[type=text], input[type=number], input[type=password], select {
  width: 100%; padding: 8px 10px; border: 1px solid #c5ccd4; border-radius: 4px; margin-top: 4px; font-size: 14px; background: #fff;
}
input:focus, select:focus { outline: none; border-color: #1c3d5a; }
table.list { width: 100%; border-collapse: collapse; font-size: 14px; }
table.list th { text-align: left; background: #eef1f5; color: #1c3d5a; padding: 8px; border-bottom: 2px solid #c5ccd4; }
table.list td { padding: 7px 8px; border-bottom: 1px solid #e8ebef; vertical-align: middle; }
table.list tr.inactive td { color: #999; }
table.list tr.inactive td code { text-decoration: line-through; }
td.actions { white-space: nowrap; }
td.actions form { display: inline; margin-left: 4px; }
table.kv { border-collapse: collapse; margin: 12px 0; }
table.kv th { text-align: left; padding: 6px 16px 6px 0; color: #66707a; font-weight: 500; font-size: 13px; }
table.kv td { padding: 6px 0; font-size: 14px; }
.stats { display: flex; gap: 16px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 140px; background: #f4f7fa; border: 1px solid #d9dee5; border-radius: 6px; padding: 14px; text-align: center; }
.stat .num { font-size: 32px; font-weight: 700; color: #1c3d5a; }
.stat .lbl { font-size: 13px; color: #66707a; }
.login-card { max-width: 380px; margin: 60px auto; border-top: 3px solid #1c3d5a; }
.login-card h2 { border-bottom: 0; text-align: center; }
.search { margin-bottom: 14px; display: flex; gap: 8px; }
.search input { flex: 1; }
.vlan { width: 90px; }
.ok-card { border: 1px solid #2e6b34; border-left: 4px solid #2e6b34; }
.chain-preview { background: #f4f6f8; padding: 10px; border-radius: 4px; font-size: 11px; overflow: hidden; }
ol li, ul li { font-size: 14px; margin-bottom: 4px; }