:root{
  --bg:#0b1220; --bg2:#0f1830; --panel:#131f38; --panel2:#0d1730;
  --line:#223152; --line2:#2b3d63;
  --text:#e6edf7; --muted:#8aa0c0; --dim:#5d739a;
  --accent:#38bdf8; --accent2:#22d3ee; --cyan:#06b6d4;
  --green:#34d399; --amber:#fbbf24; --red:#f87171; --purple:#a78bfa;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,"Segoe UI","Microsoft YaHei","PingFang SC",Roboto,sans-serif;
  background:radial-gradient(1200px 700px at 80% -10%,#12264d 0%,transparent 55%),radial-gradient(900px 600px at -10% 110%,#0e2f3f 0%,transparent 50%),var(--bg);
  color:var(--text); font-size:14px; line-height:1.5; overflow-x:hidden;
}
.hidden{display:none!important}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* ============ 登录 ============ */
.login-view{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:16px}
.login-bg{position:absolute;inset:0;overflow:hidden;z-index:0}
.login-bg::before,.login-bg::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.5}
.login-bg::before{width:460px;height:460px;background:#0ea5e9;top:-120px;right:-80px}
.login-bg::after{width:420px;height:420px;background:#7c3aed;bottom:-140px;left:-100px}
.login-card{position:relative;z-index:1;width:100%;max-width:420px;background:rgba(15,24,48,.82);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:20px;padding:36px 34px;box-shadow:var(--shadow)}
.login-brand{text-align:center;margin-bottom:26px}
.brand-logo{font-size:44px;line-height:1}
.brand-logo.small{font-size:22px}
.login-brand h1{font-size:30px;letter-spacing:2px;margin-top:10px;background:linear-gradient(90deg,#38bdf8,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-sub{color:var(--text);margin-top:4px;font-size:15px}
.brand-en{color:var(--muted);font-size:11px;letter-spacing:.5px;margin-top:2px}
.login-card form label{display:block;margin-bottom:14px}
.login-card form label span{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}
.login-card input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line2);background:var(--panel2);color:var(--text);font-size:15px;outline:none;transition:.2s}
.login-card input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(56,189,248,.15)}
.login-card button{width:100%;padding:13px;border:none;border-radius:10px;background:linear-gradient(90deg,#0ea5e9,#6366f1);color:#fff;font-size:16px;font-weight:600;letter-spacing:4px;margin-top:6px;transition:.2s}
.login-card button:hover{filter:brightness(1.1)}
.login-card button:disabled{opacity:.6;cursor:not-allowed}
.login-err{color:var(--red);font-size:13px;text-align:center;min-height:20px;margin-top:10px}
.login-hint{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);color:var(--muted);font-size:12px;text-align:center}
.login-hint b{color:var(--accent)}
.login-foot{margin-top:14px;color:var(--dim);font-size:11px;text-align:center}

/* ============ 应用外壳 ============ */
.app-view{min-height:100vh;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:12px;padding:10px 18px;background:rgba(11,18,32,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.menu-btn{display:none;background:var(--panel);border:1px solid var(--line);color:var(--text);border-radius:8px;width:38px;height:38px;font-size:18px}
.topbar-title{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.tb-name{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-sub{font-size:11px;color:var(--muted)}
.topbar-right{display:flex;align-items:center;gap:12px}
.conn-dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);animation:pulse 2s infinite}
.conn-dot.off{background:var(--red);box-shadow:0 0 8px var(--red)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.clock{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13px}
.user-chip{display:flex;align-items:center;gap:9px;padding:5px 12px 5px 6px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}
.avatar{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,#0ea5e9,#6366f1);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.user-meta div:first-child{font-size:13px;font-weight:600}
.user-meta div:last-child{font-size:11px;color:var(--muted)}
.ghost-btn{background:transparent;border:1px solid var(--line2);color:var(--muted);border-radius:8px;padding:8px 12px;font-size:13px;transition:.2s}
.ghost-btn:hover{color:var(--text);border-color:var(--accent)}

.shell{display:flex;flex:1;min-height:0}
.sidebar{width:210px;flex-shrink:0;background:rgba(13,23,48,.7);border-right:1px solid var(--line);padding:16px 12px;display:flex;flex-direction:column;gap:4px;position:sticky;top:59px;height:calc(100vh - 59px)}
.nav-item{display:flex;align-items:center;gap:11px;padding:12px 14px;border-radius:10px;color:var(--muted);font-size:14px;transition:.2s;border:1px solid transparent}
.nav-item i{font-style:normal;font-size:17px}
.nav-item:hover{background:var(--panel);color:var(--text)}
.nav-item.active{background:linear-gradient(90deg,rgba(14,165,233,.18),rgba(99,102,241,.12));color:var(--text);border-color:var(--line2)}
.nav-item.active i{filter:none}
.nav-foot{margin-top:auto;padding:12px;font-size:11px;color:var(--dim);text-align:center;border-top:1px dashed var(--line)}

.content{flex:1;padding:20px;min-width:0;max-width:1500px;margin:0 auto;width:100%}
.view{display:none}
.view.active{display:block;animation:fade .3s}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ============ 面板 / 卡片 ============ */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:18px;box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.panel-head h3{font-size:15px;font-weight:600}
.panel-tag{font-size:11px;color:var(--muted);background:var(--panel2);border:1px solid var(--line);padding:3px 9px;border-radius:999px}
.live-tag{color:var(--green);border-color:rgba(52,211,153,.4)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:860px){.two-col{grid-template-columns:1fr}}

/* KPI */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:18px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;position:relative;overflow:hidden}
.kpi::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--k,var(--accent))}
.kpi .k-label{font-size:12px;color:var(--muted)}
.kpi .k-value{font-size:28px;font-weight:700;margin-top:6px;font-variant-numeric:tabular-nums}
.kpi .k-value small{font-size:13px;font-weight:500;color:var(--muted)}
.kpi .k-sub{font-size:11px;color:var(--dim);margin-top:3px}

/* 架构图 */
.arch{display:flex;flex-direction:column;gap:12px}
.arch-layer{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--panel2)}
.arch-layer .l-title{font-size:12px;font-weight:600;letter-spacing:1px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.arch-layer .l-title .badge{font-size:10px;padding:2px 8px;border-radius:6px;color:#0b1220;font-weight:700}
.arch-cloud .l-title .badge{background:var(--purple)}
.arch-edge .l-title .badge{background:var(--cyan)}
.arch-end .l-title .badge{background:var(--green)}
.arch-nodes{display:flex;flex-wrap:wrap;gap:8px}
.arch-node{display:flex;align-items:center;gap:7px;background:var(--panel);border:1px solid var(--line2);border-radius:9px;padding:7px 11px;font-size:12px}
.arch-node .st{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 6px var(--green)}
.arch-node .st.off{background:var(--red);box-shadow:0 0 6px var(--red)}
.arch-node .st.idle{background:var(--amber)}
.arch-link{display:flex;justify-content:center;color:var(--dim);font-size:11px;letter-spacing:2px;padding:1px 0}
.arch-link::before,.arch-link::after{content:"↓";margin:0 6px;color:var(--accent)}
.arch-link span{font-size:11px}

/* 边缘列表 */
.edge-list{display:flex;flex-direction:column;gap:10px}
.edge-item{display:flex;align-items:center;gap:10px;background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.edge-item .e-ic{width:34px;height:34px;border-radius:8px;background:rgba(34,211,238,.15);display:flex;align-items:center;justify-content:center;font-size:16px}
.edge-item .e-meta{flex:1;min-width:0}
.edge-item .e-name{font-size:13px;font-weight:600}
.edge-item .e-loc{font-size:11px;color:var(--muted)}
.edge-item .e-load{font-size:11px;color:var(--dim);text-align:right}
.meter{height:5px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:4px;min-width:70px}
.meter>i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--accent))}

/* 事件列表 */
.event-list{display:flex;flex-direction:column;gap:8px;max-height:320px;overflow:auto}
.evt{display:flex;gap:10px;align-items:flex-start;background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:9px 11px}
.evt.info{border-left-color:var(--accent)}
.evt.warn{border-left-color:var(--amber)}
.evt.error{border-left-color:var(--red)}
.evt .e-dot{font-size:14px;line-height:1.3}
.evt .e-body{flex:1;min-width:0}
.evt .e-title{font-size:13px;font-weight:600}
.evt .e-msg{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.evt .e-time{font-size:11px;color:var(--dim);flex-shrink:0}

/* 设备网格 */
.filter-row{display:flex;gap:6px;flex-wrap:wrap}
.filter-pill{font-size:12px;color:var(--muted);border:1px solid var(--line2);padding:4px 11px;border-radius:999px;cursor:pointer;transition:.2s}
.filter-pill.active{background:var(--accent);color:#0b1220;border-color:var(--accent);font-weight:600}
.device-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}
.device-card{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px;cursor:pointer;transition:.2s;position:relative}
.device-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.device-card .d-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.device-card .d-name{font-weight:700;font-size:15px}
.device-card .d-status{font-size:11px;padding:3px 9px;border-radius:999px;font-weight:600}
.st-detecting{background:rgba(52,211,153,.15);color:var(--green)}
.st-idle{background:rgba(251,191,36,.15);color:var(--amber)}
.st-maintenance{background:rgba(167,139,250,.15);color:var(--purple)}
.st-offline{background:rgba(248,113,113,.15);color:var(--red)}
.device-card .d-model{font-size:11px;color:var(--muted)}
.device-card .d-task{font-size:12px;color:var(--dim);margin:4px 0 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.device-card .d-row{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin:3px 0}
.device-card .d-row b{color:var(--text);font-weight:600}
.progress{height:6px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:8px}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--green));transition:width .5s}

/* 管道地图 */
.route-wrap{overflow-x:auto}
#routeMap{width:100%;height:auto;min-height:200px}
.seg-legend{display:flex;gap:12px;flex-wrap:wrap}
.seg-legend .lg{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}
.seg-legend .lg i{width:12px;height:12px;border-radius:3px;display:inline-block}

/* 图表 canvas */
.chart-canvas{width:100%;display:block;background:var(--panel2);border-radius:8px}
.chart-canvas.wide{height:auto}

/* 参数网格 */
.param-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.param{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}
.param .p-label{font-size:11px;color:var(--muted)}
.param .p-value{font-size:20px;font-weight:700;margin-top:4px;font-variant-numeric:tabular-nums}

/* 表格 */
.table-wrap{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:13px}
.data-table th,.data-table td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.data-table th{color:var(--muted);font-weight:600;font-size:12px;background:var(--panel2)}
.data-table tr:hover td{background:rgba(56,189,248,.04)}
.lv-badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:600}
.lv-I{background:rgba(52,211,153,.15);color:var(--green)}
.lv-II{background:rgba(251,191,36,.15);color:var(--amber)}
.lv-III{background:rgba(248,113,113,.18);color:var(--red)}
.risk-bar{height:5px;width:70px;background:var(--line);border-radius:4px;overflow:hidden;display:inline-block;vertical-align:middle;margin-right:6px}
.risk-bar>i{display:block;height:100%}

/* 统计 */
.seg-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.seg-card{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px}
.seg-card .s-name{font-weight:700;font-size:14px}
.seg-card .s-nums{display:flex;gap:14px;margin-top:10px;flex-wrap:wrap}
.seg-card .s-num{text-align:center}
.seg-card .s-num b{font-size:20px;display:block}
.seg-card .s-num span{font-size:11px;color:var(--muted)}
.bar-chart{display:flex;flex-direction:column;gap:12px;padding-top:6px}
.bar-row{display:flex;align-items:center;gap:10px}
.bar-row .b-label{width:110px;font-size:12px;color:var(--muted);text-align:right;flex-shrink:0}
.bar-row .b-track{flex:1;height:18px;background:var(--panel2);border-radius:6px;overflow:hidden}
.bar-row .b-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,#0ea5e9,#22d3ee);transition:width .6s;display:flex;align-items:center;justify-content:flex-end;padding-right:6px;font-size:11px;color:#0b1220;font-weight:700;min-width:24px}
.bar-row .b-count{font-size:12px;color:var(--text);font-weight:600;width:30px}

/* 报告 */
.report-body{font-size:13.5px;line-height:1.9}
.report-body h4{margin:16px 0 8px;font-size:15px;color:var(--accent);border-left:3px solid var(--accent);padding-left:10px}
.report-body .r-meta{display:flex;flex-wrap:wrap;gap:14px;background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:6px}
.report-body .r-meta div{font-size:12px;color:var(--muted)}
.report-body .r-meta b{color:var(--text);font-size:14px;display:block;margin-bottom:2px}
.report-body ul{padding-left:20px;color:var(--text)}
.report-body li{margin:4px 0}
.report-body .concl{background:rgba(52,211,153,.06);border:1px solid rgba(52,211,153,.25);border-radius:10px;padding:12px 16px}

.primary-btn{background:linear-gradient(90deg,#0ea5e9,#6366f1);border:none;color:#fff;padding:8px 16px;border-radius:8px;font-size:13px;font-weight:600}

/* 设备选择 chips */
.device-select{display:flex;flex-wrap:wrap;gap:8px}
.dsel{font-size:13px;padding:8px 14px;border-radius:999px;border:1px solid var(--line2);background:var(--panel2);color:var(--muted);cursor:pointer;transition:.2s}
.dsel.active{background:var(--accent);color:#0b1220;border-color:var(--accent);font-weight:700}

/* Toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);background:var(--panel);border:1px solid var(--line2);color:var(--text);padding:11px 18px;border-radius:10px;font-size:13px;opacity:0;pointer-events:none;transition:.3s;z-index:99;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 移动端 ============ */
@media(max-width:760px){
  .menu-btn{display:block}
  .topbar-title .tb-sub{display:none}
  .user-meta{display:none}
  .ghost-btn{padding:7px 10px}
  .clock{display:none}
  .sidebar{position:fixed;left:0;top:59px;bottom:0;transform:translateX(-100%);transition:.25s;z-index:40;width:200px;height:auto}
  .sidebar.open{transform:none}
  .content{padding:14px}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .kpi .k-value{font-size:22px}
  .device-grid{grid-template-columns:1fr}
  .login-card{padding:28px 22px}
}