:root{
  --canvas:#f5f6f7;
  --sidebar:#fafafa;
  --surface:#ffffff;
  --surface-soft:#f8f9fa;
  --surface-hover:#f4f5f6;
  --line:#e2e5e8;
  --line-strong:#cbd0d6;
  --text:#202327;
  --muted:#626a73;
  --subtle:#8a929b;
  --accent:#3560d8;
  --accent-hover:#294fb9;
  --accent-soft:#edf2ff;
  --ok:#167553;
  --ok-soft:#e8f5ef;
  --warn:#8a5b12;
  --warn-soft:#fff4de;
  --bad:#b93b3b;
  --bad-soft:#fdefef;
  --shadow:0 16px 48px rgba(31,37,45,.14);
  --font:"Segoe UI Variable Text","Segoe UI","Microsoft YaHei UI",system-ui,sans-serif;
  --mono:"Cascadia Mono","Consolas",monospace;
}

*{box-sizing:border-box}
html,body{margin:0;min-height:100%;max-width:100%;background:var(--canvas);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5;letter-spacing:0;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body{overflow-x:hidden}
button,input,select{font:inherit;letter-spacing:0}
button{-webkit-tap-highlight-color:transparent}
button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid rgba(53,96,216,.38);outline-offset:2px}
.hidden{display:none!important}

.layout{display:grid;grid-template-columns:224px minmax(0,1fr);min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;background:var(--sidebar);border-right:1px solid var(--line);padding:20px 12px 14px;display:flex;flex-direction:column;z-index:20}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px 23px;font-size:15px;font-weight:700}
.brand small{display:block;margin-top:1px;color:var(--muted);font-size:11px;font-weight:500}
.brand-mark,.product-mark{display:grid;place-items:center;background:#252a30;color:#fff;font-weight:750}
.brand-mark{width:32px;height:32px;border-radius:7px}
.nav{display:flex;flex-direction:column;gap:18px}
.nav-group{display:flex;flex-direction:column;gap:3px}
.nav-label{padding:0 10px 5px;color:var(--subtle);font-size:10px;font-weight:700;text-transform:uppercase}
.nav-btn{position:relative;min-height:40px;border:0;border-radius:6px;background:transparent;color:#555e68;text-align:left;padding:8px 10px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:background-color .14s ease,color .14s ease,transform .1s ease}
.nav-btn:hover{background:#eef0f2;color:var(--text)}
.nav-btn:active{transform:translateY(1px)}
.nav-btn.active{background:var(--accent-soft);color:#284fb9;font-weight:680}
.nav-btn.active::before{content:"";position:absolute;left:-12px;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--accent)}
.nav-icon{display:inline-grid;place-items:center;width:18px;height:18px;font-family:var(--mono);font-size:13px;font-weight:700}
.sidebar-foot{margin-top:auto;border-top:1px solid var(--line);padding:14px 8px 2px;color:var(--muted);font-size:11px;display:flex;align-items:center;gap:8px;min-width:0}
.sidebar-foot span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--subtle);flex:none}
.status-dot.ok{background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft)}

.main{width:100%;max-width:1600px;min-width:0;margin:0 auto;padding:28px clamp(22px,3vw,46px) 48px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}
.page-heading{min-width:0}
.topbar h1{margin:0;font-size:22px;line-height:1.25;font-weight:720}
.topbar p{margin:5px 0 0;color:var(--muted);font-size:12px}
.topbar-actions{display:flex;align-items:center;gap:8px;flex:none}
.health{display:inline-flex;align-items:center;gap:7px;margin-right:4px;color:var(--muted);font-size:12px;white-space:nowrap}
.health i{width:7px;height:7px;border-radius:50%;background:var(--subtle)}
.health.ok{color:var(--ok)}
.health.ok i{background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft)}
.health.bad{color:var(--bad)}
.health.bad i{background:var(--bad);box-shadow:0 0 0 3px var(--bad-soft)}

.btn,.icon-btn{height:36px;border:1px solid var(--line-strong);border-radius:6px;background:var(--surface);color:var(--text);padding:0 13px;cursor:pointer;transition:border-color .14s ease,background-color .14s ease,color .14s ease,transform .1s ease}
.btn:hover,.icon-btn:hover{border-color:#aeb5bd;background:var(--surface-hover)}
.btn:active,.icon-btn:active{transform:translateY(1px)}
.btn:disabled,.icon-btn:disabled{opacity:.48;cursor:default;transform:none}
.icon-btn{width:36px;padding:0;font-size:18px}
.btn.primary{border-color:var(--accent);background:var(--accent);color:#fff}
.btn.primary:hover{border-color:var(--accent-hover);background:var(--accent-hover)}
.btn.quiet{background:transparent}
.btn.danger-solid{border-color:var(--bad);background:var(--bad);color:#fff}
.wide{width:100%}
.text-btn{min-height:32px;border:0;background:none;color:var(--accent);font-size:12px;padding:4px 0;cursor:pointer;white-space:nowrap}
.text-btn:hover{color:var(--accent-hover)}

.metric-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:14px;border:1px solid var(--line);border-radius:7px;background:var(--surface);overflow:hidden}
.metric{min-width:0;padding:18px 20px;text-align:left}
.metric+.metric{border-left:1px solid var(--line)}
button.metric{border:0;border-radius:0;background:transparent;color:inherit;font:inherit;cursor:pointer;transition:background-color .14s ease}
button.metric:hover{background:var(--surface-hover)}
button.metric:active{background:#eef0f2}
.metric span{display:block;color:var(--muted);font-size:12px}
.metric strong{display:block;margin:7px 0 4px;font-size:27px;line-height:1.15;font-weight:720;font-variant-numeric:tabular-nums}
.metric strong.status-good{color:var(--ok);font-size:23px}
.metric strong.status-bad{color:var(--bad);font-size:23px}
.metric small{display:block;color:var(--subtle);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.overview-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,.75fr);gap:14px}
.relay-grid{grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr)}
.surface{min-width:0;margin-bottom:14px;padding:18px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}
.surface.flush,.surface.flush-table{padding:0;overflow:hidden}
.surface.form-surface{padding:20px}
.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:15px}
.section-head.padded{padding:17px 18px 14px;margin:0}
.section-head h2{margin:0;font-size:14px;font-weight:700}
.section-head p{margin:3px 0 0;color:var(--muted);font-size:12px}
.section-meta,.toolbar-meta{color:var(--muted);font-size:12px;white-space:nowrap}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px}
.check{display:grid;grid-template-columns:8px minmax(0,1fr) auto;align-items:center;gap:9px;min-width:0;padding:10px 0;border-bottom:1px solid #eef0f2}
.check:nth-last-child(-n+2){border-bottom:0}
.check-dot{width:8px;height:8px;border-radius:50%;background:var(--ok)}
.check.warn .check-dot{background:var(--warn)}
.check.bad .check-dot{background:var(--bad)}
.check span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.check small{color:var(--muted);font-size:11px;text-align:right}
.facts{margin:0}
.facts div{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:8px 0;border-bottom:1px solid #eef0f2}
.facts div:last-child{border-bottom:0}
.facts dt{color:var(--muted)}
.facts dd{min-width:0;margin:0;font-weight:650;text-align:right;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.compact-facts{margin-top:8px}
.compact-facts div{padding:7px 0}

.toolbar{display:flex;align-items:center;gap:10px;min-height:38px;margin-bottom:12px}
.toolbar-meta{margin-left:auto}
.search{display:flex;align-items:center;gap:7px;width:min(430px,100%);height:38px;padding:0 11px;border:1px solid var(--line-strong);border-radius:6px;background:var(--surface)}
.search span{color:var(--subtle);font-size:17px}
.search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--text)}
.search input::placeholder{color:#9aa1a9}
.select,.input{height:38px;border:1px solid var(--line-strong);border-radius:6px;outline:0;background:var(--surface);color:var(--text);padding:0 10px}
.select:focus,.input:focus,.search:focus-within{border-color:#8299dc;box-shadow:0 0 0 3px var(--accent-soft)}
.segmented{display:inline-flex;padding:2px;border:1px solid var(--line-strong);border-radius:6px;background:var(--surface)}
.segmented button{height:31px;border:0;border-radius:4px;background:transparent;color:var(--muted);padding:0 13px;cursor:pointer}
.segmented button:hover{color:var(--text)}
.segmented button.active{background:#eceff2;color:var(--text);font-weight:650}

.table-wrap{width:100%;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain}
.data{width:100%;border-collapse:collapse;font-size:12.5px}
.data th,.data td{text-align:left;vertical-align:middle;padding:11px 13px;border-bottom:1px solid #e9ebee}
.data th{height:40px;background:var(--surface-soft);color:#747c85;font-size:11px;font-weight:650;white-space:nowrap}
.data tbody tr:last-child td{border-bottom:0}
.data tbody tr:hover td{background:#fafbfb}
.data strong{font-weight:650}
.subline{display:block;max-width:300px;margin-top:2px;color:var(--subtle);font-family:var(--mono);font-size:10.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mono{font-family:var(--mono);font-size:11px}
.muted{color:var(--muted)}
.nowrap{white-space:nowrap}
.empty{height:108px!important;text-align:center!important;color:var(--muted)}
.pill{display:inline-flex;align-items:center;padding:2px 7px;border-radius:4px;background:#eff1f3;color:#626b75;font-size:10.5px;font-weight:650;white-space:nowrap}
.pill.online,.pill.ok{background:var(--ok-soft);color:var(--ok)}
.pill.offline,.pill.bad{background:var(--bad-soft);color:var(--bad)}
.pill.pending,.pill.never,.pill.warn{background:var(--warn-soft);color:var(--warn)}
.pill.ipv6{background:var(--accent-soft);color:#405bb5}
.actions{display:flex;justify-content:flex-end;gap:6px}
.table-btn{min-height:32px;border:0;border-radius:4px;background:none;color:var(--muted);font-size:12px;padding:4px 7px;cursor:pointer}
.table-btn:hover{background:var(--surface-hover);color:var(--text)}
.table-btn.danger{color:var(--bad)}
.table-btn.danger:hover{background:var(--bad-soft)}

.session-main td{padding-top:14px;border-bottom:0}
.session-main td:first-child{border-left:3px solid var(--accent)}
.session-detail td{padding:0 13px 15px;border-bottom:1px solid #e9ebee;background:#f8f9fa}
.session-detail td:first-child{border-left:3px solid var(--accent)}
.session-detail:hover td{background:#f8f9fa!important}
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(180px,1fr));border:1px solid var(--line);border-radius:6px;background:var(--surface);overflow:hidden}
.link-grid>div{min-width:0;padding:10px 12px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.link-grid>div:nth-child(3n){border-right:0}
.link-grid>div:nth-last-child(-n+3){border-bottom:0}
.link-grid>div>span{display:block;margin-bottom:4px;color:var(--muted);font-size:10.5px}
.link-grid>div>strong{display:block;font-size:11.5px}
.link-grid small{display:block;margin-top:3px;color:var(--subtle);font-family:var(--mono);font-size:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.link-grid b{color:var(--accent);font-weight:600}
.device-chips{display:flex;flex-wrap:wrap;gap:5px}
.device-chips>span{display:inline-flex;align-items:center;gap:5px;padding:3px 7px;border-radius:4px;background:#f0f2f3;color:var(--muted);font-size:11px}
.mini-dot{width:6px;height:6px;border-radius:50%;background:var(--subtle)}
.mini-dot.online{background:var(--ok)}

.inline-form{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap}
.inline-form label{display:flex;flex-direction:column;gap:5px;color:var(--muted);font-size:12px}
.input{min-width:230px}
.input.compact{width:150px;min-width:120px}
.secret-box{display:grid;grid-template-columns:minmax(190px,260px) minmax(0,1fr) auto;align-items:center;gap:14px;margin-top:16px;padding:13px;border:1px solid #c8d2f2;border-radius:6px;background:#f5f7fd}
.secret-box strong,.secret-box span{display:block}
.secret-box span{margin-top:2px;color:var(--muted);font-size:11px}
.secret-box code{padding:8px;border:1px solid var(--line);border-radius:5px;background:#fff;font-family:var(--mono);font-size:11px;word-break:break-all}

.notice{display:none;margin-bottom:12px;padding:10px 12px;border-radius:6px;font-size:12px}
.notice.show{display:block}
.notice.error{border:1px solid #ebc1c1;background:var(--bad-soft);color:#9d3030}
.notice.warn{border:1px solid #e6cf9c;background:var(--warn-soft);color:#7c500e}
.loading-bar{height:2px;margin:-8px 0 10px;overflow:hidden;background:#e7ebf7}
.loading-bar span{display:block;width:35%;height:100%;background:var(--accent);animation:loading 1s ease-in-out infinite}
.skeleton-block:empty{min-height:100px;border-radius:5px;background:linear-gradient(90deg,#f4f5f6 25%,#fafafa 40%,#f4f5f6 65%);background-size:300% 100%;animation:skeleton 1.2s ease infinite}

.auth-view{min-height:100vh;padding:28px;display:grid;place-items:center;background:var(--canvas)}
.auth-panel{width:min(410px,100%);padding:31px;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:0 12px 40px rgba(38,45,58,.08)}
.product-mark{width:40px;height:40px;margin-bottom:22px;border-radius:8px}
.eyebrow{margin:0 0 5px;color:var(--subtle);font-size:10px;font-weight:700}
.auth-panel h1{margin:0;font-size:21px}
.auth-copy{margin:7px 0 23px;color:var(--muted)}
.auth-form{display:flex;flex-direction:column;gap:8px}
.auth-form label{font-size:12px;font-weight:650}
.auth-form .input{width:100%;margin-bottom:4px}
.auth-foot{margin:16px 0 0;color:var(--subtle);font-size:11px;text-align:center}
.toast{position:fixed;right:22px;bottom:22px;z-index:100;max-width:min(360px,calc(100vw - 28px));padding:10px 14px;border-radius:6px;background:#292e34;color:#fff;box-shadow:var(--shadow);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .18s ease,transform .18s ease}
.toast.show{opacity:1;transform:none}
.modal-backdrop{position:fixed;inset:0;z-index:90;padding:20px;display:grid;place-items:center;background:rgba(31,35,42,.28);animation:fade-in .15s ease}
.modal{width:min(420px,100%);padding:22px;display:grid;grid-template-columns:34px 1fr;gap:13px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);animation:modal-in .18s ease}
.modal-icon{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--bad-soft);color:var(--bad);font-weight:750}
.modal h2{margin:2px 0 6px;font-size:15px}
.modal p{margin:0;color:var(--muted);font-size:12px;white-space:pre-line}
.modal-actions{grid-column:1/-1;display:flex;justify-content:flex-end;gap:8px;margin-top:8px}
.relay-metrics .metric strong{font-size:23px}
.relay-error{margin:14px 0 0}
.operation-note{padding:10px 0;border-bottom:1px solid #eef0f2}
.operation-note strong{font-size:12px}
.operation-note p{margin:4px 0 0;color:var(--muted);font-size:12px}
.technical-details{margin-top:12px;padding-top:2px}
.technical-details summary{min-height:36px;display:flex;align-items:center;color:var(--accent);font-size:12px;cursor:pointer;list-style:none}
.technical-details summary::after{content:"⌄";margin-left:auto;color:var(--subtle)}
.technical-details[open] summary::after{content:"⌃"}
.technical-details summary::-webkit-details-marker{display:none}

@keyframes loading{0%{transform:translateX(-110%)}100%{transform:translateX(390%)}}
@keyframes skeleton{0%{background-position:100% 0}100%{background-position:0 0}}
@keyframes fade-in{from{opacity:0}}
@keyframes modal-in{from{opacity:0;transform:translateY(6px) scale(.99)}}

@media(max-width:960px){
  .layout{display:block}
  .sidebar{position:sticky;height:auto;padding:10px 12px;border-right:0;border-bottom:1px solid var(--line)}
  .brand{padding:0 4px 9px}
  .brand small{display:none}
  .brand-mark{width:29px;height:29px}
  .nav{width:100%;display:flex;flex-direction:row;gap:4px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  .nav-group{display:contents}
  .nav-label{display:none}
  .nav-btn{flex:0 0 auto;justify-content:center;min-height:36px;padding:7px 12px;white-space:nowrap}
  .nav-btn.active::before{left:10px;right:10px;top:auto;bottom:-1px;width:auto;height:2px;border-radius:2px 2px 0 0}
  .nav-icon{display:none}
  .sidebar-foot{display:none}
  .main{padding:20px 16px 38px}
  .overview-grid,.relay-grid{grid-template-columns:1fr}
  .table-wrap{max-width:100%}
}

@media(max-width:720px){
  .topbar{align-items:flex-start;margin-bottom:18px}
  .topbar p{display:none}
  .health span{display:none}
  .btn.quiet{padding:0 10px}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .metric:nth-child(4){border-top:1px solid var(--line)}
  .metric{padding:15px}
  .metric strong{font-size:24px}
  .metric strong.status-good,.metric strong.status-bad,.relay-metrics .metric strong{font-size:20px}
  .check-list{grid-template-columns:1fr}
  .check:nth-last-child(2){border-bottom:1px solid #eef0f2}
  .toolbar{align-items:stretch;flex-wrap:wrap}
  .search{width:100%}
  .toolbar-meta{width:100%;margin-left:0}
  .audit-toolbar .select{flex:1}
  .inline-form{align-items:stretch}
  .inline-form label,.inline-form .input,.inline-form .btn{width:100%;min-width:0}
  .secret-box{grid-template-columns:1fr}
  .secret-box .btn{justify-self:start}
  .surface.flush{border:0;background:transparent;overflow:visible}
  .responsive-table,.responsive-table tbody,.responsive-table tr,.responsive-table td{display:block;width:100%}
  .responsive-table thead{display:none}
  .responsive-table tbody{display:grid;gap:10px}
  .responsive-table tr{padding:9px 12px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}
  .responsive-table td{min-height:34px;padding:7px 0;display:grid;grid-template-columns:minmax(92px,32%) minmax(0,1fr);align-items:center;gap:12px;border-bottom:1px solid #eef0f2;text-align:right}
  .responsive-table td::before{content:attr(data-label);color:var(--muted);font-size:11px;text-align:left}
  .responsive-table td:last-child{border-bottom:0}
  .responsive-table td.actions{display:flex;justify-content:flex-end;padding-top:9px}
  .responsive-table td.actions::before{display:none}
  .responsive-table .subline{max-width:100%;margin-left:auto}
  .responsive-table .device-chips{justify-content:flex-end}
  .responsive-table .empty{display:block;height:auto!important;padding:32px 12px;text-align:center!important}
  .responsive-table .empty::before{display:none}
  .session-table,.session-table tbody,.session-table tr,.session-table td{display:block;width:100%}
  .session-table thead{display:none}
  .session-table tbody{display:block;padding:10px;background:var(--canvas)}
  .session-main{margin-top:10px;padding:9px 12px;border:1px solid var(--line);border-bottom:0;border-radius:7px 7px 0 0;background:var(--surface)}
  .session-main:first-child{margin-top:0}
  .session-main td{min-height:34px;padding:7px 0;display:grid;grid-template-columns:minmax(92px,32%) minmax(0,1fr);align-items:center;gap:12px;border:0;border-bottom:1px solid #eef0f2;text-align:right}
  .session-main td:first-child{border-left:0}
  .session-main td::before{content:attr(data-label);color:var(--muted);font-size:11px;text-align:left}
  .session-main td.actions{display:flex;justify-content:flex-end;border-bottom:0}
  .session-main td.actions::before{display:none}
  .session-main .subline{max-width:100%;margin-left:auto}
  .session-detail{border:1px solid var(--line);border-top:0;border-radius:0 0 7px 7px;background:var(--surface)}
  .session-detail td{padding:0 12px 12px;border:0;background:transparent}
  .session-detail td:first-child{border-left:0}
  .session-detail:hover td{background:transparent!important}
  .session-main:has(+.session-main),.session-main:last-child{border-bottom:1px solid var(--line);border-radius:7px}
  .link-grid{grid-template-columns:1fr}
  .link-grid>div,.link-grid>div:nth-child(3n),.link-grid>div:nth-last-child(-n+3){border-right:0;border-bottom:1px solid var(--line)}
  .link-grid>div:last-child{border-bottom:0}
  .link-grid small{white-space:normal;overflow-wrap:anywhere}
  .overview-table,.overview-table tbody,.overview-table tr,.overview-table td{display:block;width:100%}
  .overview-table thead{display:none}
  .overview-table tbody{display:grid;gap:0}
  .overview-table tr{padding:9px 13px;border-top:1px solid var(--line)}
  .overview-table td{min-height:32px;padding:6px 0;display:grid;grid-template-columns:minmax(90px,31%) minmax(0,1fr);align-items:center;gap:12px;border:0;text-align:right}
  .overview-table td::before{content:attr(data-label);color:var(--muted);font-size:11px;text-align:left}
  .overview-table .subline{max-width:100%;margin-left:auto}
  .overview-table .empty{display:block;height:auto!important;padding:28px 12px;text-align:center!important}
  .overview-table .empty::before{display:none}
  .facts div{align-items:flex-start}
}

@media(max-width:420px){
  .main{padding:16px 12px 32px}
  .topbar h1{font-size:20px}
  .metric{padding:13px}
  .metric small{white-space:normal;min-height:33px}
  .section-head{gap:8px}
  .section-head p{font-size:11px}
  .section-meta{white-space:normal;text-align:right}
  .modal{padding:18px}
  .toast{right:14px;bottom:14px}
}

@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}