:root{
  --bg:#f5f7fb; --panel:#fff; --line:#e5eaf2; --ink:#1d2739; --muted:#6d7a8d;
  --soft:#f2f5fa; --accent:#2f63f5; --accent-soft:#e9efff;
  --green:#15a34a; --amber:#d99317; --orange:#e9681f; --red:#d92d20;
  --shadow:0 2px 12px rgba(25,45,85,.05);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);
  font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
.hidden{display:none!important}
.muted{color:var(--muted)} .tiny{font-size:11.5px} .err{color:var(--red);font-size:12.5px;min-height:20px;margin-top:8px}
button,input,select,textarea{font-family:inherit;font-size:13px}
a{cursor:pointer}

/* 布局 */
.shell{display:flex;min-height:100vh}
.side{width:224px;flex:0 0 224px;background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;gap:10px;align-items:center;padding:20px 18px;border-bottom:1px solid var(--line)}
.brand b{display:block;font-size:15px;letter-spacing:-.2px}
.brand span{display:block;font-size:11px;color:var(--muted)}
.brand-mark{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,#2f63f5,#6d8dff);
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:750;font-size:15px;letter-spacing:1px}
.brand-mark.small{width:34px;height:34px;font-size:12px;border-radius:9px}
nav{padding:14px 10px;flex:1}
nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;
  color:#49566b;text-decoration:none;font-size:13.5px;font-weight:550;margin-bottom:3px}
nav a i{font-style:normal;width:18px;text-align:center;font-size:15px;opacity:.7}
nav a:hover{background:var(--soft)}
nav a.active{background:var(--accent-soft);color:var(--accent)}
nav a.active i{opacity:1}
.dot{margin-left:auto;background:var(--red);color:#fff;border-radius:10px;padding:0 6px;font-size:10px;line-height:17px}
.side-foot{padding:14px 18px;border-top:1px solid var(--line)}
.status{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--green);margin-bottom:5px}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px #15a34a22}
.userline{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-size:12.5px}
.main{flex:1;min-width:0}
.topbar{height:70px;background:#fff;border-bottom:1px solid var(--line);display:flex;
  align-items:center;justify-content:space-between;padding:0 26px}
.topbar h1{margin:0;font-size:18px;font-weight:700}
.topbar p{margin:1px 0 0;font-size:12px}
.top-right{display:flex;gap:10px;align-items:center}
.chip{background:var(--soft);border:1px solid var(--line);border-radius:7px;padding:5px 10px;
  font:12px ui-monospace,Consolas,monospace;color:var(--muted)}
.view{padding:22px 26px 50px;max-width:1500px}

/* 通用组件 */
.btn{border:1px solid var(--line);background:#fff;color:var(--ink);padding:7px 14px;
  border-radius:8px;cursor:pointer;font-weight:600}
.btn:hover{border-color:#c9d4e8;background:#fafbfe}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#2554dc}
.btn.danger{color:var(--red);border-color:#f3c9c5}
.btn.sm{padding:4px 10px;font-size:12px;border-radius:6px;font-weight:550}
.btn.wide{width:100%;padding:10px}
.link{background:none;border:none;color:var(--accent);cursor:pointer;font-size:12px;padding:0}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:18px;box-shadow:var(--shadow);margin-bottom:16px}
.panel h2{margin:0 0 4px;font-size:15px;font-weight:700}
.panel .desc{margin:0 0 16px;font-size:12.5px;color:var(--muted)}
.grid{display:grid;gap:16px;align-items:start}
.g4{grid-template-columns:repeat(4,1fr)} .g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:1100px){.g4{grid-template-columns:repeat(2,1fr)}.g2,.g3{grid-template-columns:1fr}}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:17px 18px;box-shadow:var(--shadow)}
.kpi .lab{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}
.kpi .val{font-size:30px;font-weight:750;letter-spacing:-1.2px;margin-top:7px;line-height:1}
.kpi .sub{font-size:11.5px;color:var(--muted);margin-top:7px}
.kpi.red .val{color:var(--red)} .kpi.green .val{color:var(--green)}
.kpi.blue .val{color:var(--accent)} .kpi.amber .val{color:var(--amber)}

table{width:100%;border-collapse:collapse;font-size:12.5px}
th{text-align:left;color:var(--muted);font-weight:600;font-size:11.5px;
  padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:9px 10px;border-bottom:1px solid #f0f3f8;vertical-align:middle}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fafbfe}
.mono{font:12px ui-monospace,Consolas,Monaco,monospace}
.badge{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:650;color:#fff;white-space:nowrap}
.lv-LOW{background:var(--green)} .lv-ELEVATED{background:var(--amber)}
.lv-HIGH{background:var(--orange)} .lv-CRITICAL{background:var(--red)}
.tag{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;
  background:var(--soft);border:1px solid var(--line);color:#4d5a6d;font-weight:600}
.tag.on{background:#e8f7ee;border-color:#c6ebd5;color:#137a3a}
.tag.off{background:#f4f5f7;color:#8a94a3}
.bar{height:6px;border-radius:6px;background:var(--soft);overflow:hidden}
.bar > div{height:100%;border-radius:6px}
.filters{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
input,select,textarea{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:#fff;color:var(--ink);outline:none;max-width:100%}
input:not([type=range]):not([type=checkbox]),select{height:34px}
input:focus,select:focus,textarea:focus{border-color:#9db4f8;box-shadow:0 0 0 3px #2f63f518}
input[type=range]{padding:0;border:none;box-shadow:none;accent-color:var(--accent)}
textarea{width:100%;font:12px/1.55 ui-monospace,Consolas,Monaco,monospace;resize:vertical}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 4px}
.empty{padding:34px;text-align:center;color:var(--muted);font-size:13px}
.pre{background:#0f172a;color:#d9e4f7;border-radius:9px;padding:14px;overflow:auto;
  font:11.5px/1.6 ui-monospace,Consolas,monospace;max-height:380px;white-space:pre-wrap;word-break:break-all}
.rowline{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:9px}
.rowline .n{font-size:12.5px}

/* 登录 / 弹层 */
.overlay{position:fixed;inset:0;background:#0f1a2e88;display:flex;align-items:center;
  justify-content:center;z-index:60;backdrop-filter:blur(3px)}
.login-box,.modal-box{background:#fff;border-radius:16px;padding:28px;width:360px;box-shadow:0 20px 60px #0b173a44}
.login-box h2{margin:14px 0 2px;font-size:20px}
.login-box p{margin:0 0 14px;font-size:12.5px}
.login-box input{width:100%}
.login-box .tip{margin-top:14px;font-size:11px;color:var(--muted);line-height:1.5}
.modal-box{width:440px}
.modal-box h3{margin:0 0 12px;font-size:16px}
.modal-foot{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}
.drawer-mask{position:fixed;inset:0;background:#0f1a2e55;z-index:40}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(680px,92vw);background:#fff;
  z-index:41;overflow:auto;box-shadow:-12px 0 40px #0b173a22;padding:22px 24px}
.drawer h2{margin:0 0 4px;font-size:18px}
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:#1d2739;
  color:#fff;padding:10px 18px;border-radius:9px;font-size:13px;z-index:80;box-shadow:0 8px 24px #0003}

/* 图表 */
.chart{width:100%;height:190px;display:block}
.legend{display:flex;gap:16px;font-size:11.5px;color:var(--muted);margin-top:6px}
.legend i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:5px}
.dist-row{display:flex;align-items:center;gap:10px;margin-bottom:11px;font-size:12px}
.dist-row .k{width:76px;flex:0 0 76px;color:var(--muted)}
.dist-row .bar{flex:1}
.dist-row .v{width:34px;text-align:right;font-variant-numeric:tabular-nums}
.section-title{font-size:13px;font-weight:700;margin:0 0 12px}
.hr{height:1px;background:var(--line);margin:16px 0}
.case-actions{display:flex;gap:6px;flex-wrap:wrap}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:none;border-right:1px solid var(--line);background:#fff;padding:6px 13px;cursor:pointer;font-size:12px}
.seg button:last-child{border-right:none}
.seg button.on{background:var(--accent);color:#fff}
.kv{background:var(--soft);border-radius:8px;padding:10px 12px;font:11.5px/1.6 ui-monospace,Consolas,monospace;
  word-break:break-all;color:#4b586c}
.note{font-size:11.5px;color:var(--muted);line-height:1.6}
.doc-h{font-size:13px;font-weight:700;margin:18px 0 7px}
.doc-h:first-child{margin-top:0}
.sig-box{border:1px solid var(--line);border-radius:10px;padding:13px;margin-bottom:10px}
.sig-box .h{display:flex;justify-content:space-between;font-size:12.5px;font-weight:650;margin-bottom:8px}
.metrics{font:11px/1.6 ui-monospace,Consolas,monospace;color:#5a6678;margin-top:9px;
  background:var(--soft);border-radius:7px;padding:9px;max-height:150px;overflow:auto}