*{box-sizing:border-box}
:root{
  --bg:#0a0d11; --side:#0b1016; --panel:#13191f; --panel2:#181f26;
  --line:#1f262e; --line2:#273039;
  --text:#F3F1F8; --muted:#969fa9; --muted2:#778089;
  --violet:#5ca7f6; --violet2:#3a92ed; --magenta:#2e7fd3;
  --grad:linear-gradient(135deg,#3a92ed 0%,#2e7fd3 100%);
}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:"Segoe UI",system-ui,-apple-system,sans-serif;font-size:14px}
a{color:#9ccbfb;text-decoration:none}a:hover{color:#b8dbff}
.app{display:flex;min-height:100vh}
.side{width:236px;flex:none;background:var(--side);padding:18px 14px;border-right:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;padding:6px 6px 20px}
.brand .logo{width:30px;height:30px;border-radius:8px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800}
.brand b{font-size:14px}
.brand-logo{background-image:url('duon-logo.png');background-repeat:no-repeat;background-position:left center;background-size:contain;height:26px;width:112px;display:block}
.login-card .brand-logo,.login-wrap .brand-logo{height:36px;width:150px;background-position:center}
.grp{font-size:10px;letter-spacing:1.4px;color:var(--muted2);font-weight:700;margin:16px 8px 6px}
.nav{display:flex;flex-direction:column;gap:2px}
.item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;color:#afb7c0;font-size:13px}
.item svg{opacity:.75}
.item:hover{background:#131a22;color:var(--text)}
.item:hover svg{opacity:1}
.item.on{background:rgba(58,146,237,.16);color:#fff;font-weight:600;box-shadow:inset 2px 0 0 var(--magenta)}
.item.on svg{opacity:1;color:#9bccff}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.top{height:60px;flex:none;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 26px}
.who{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted)}
.av{width:32px;height:32px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff}
.content{padding:22px 26px 40px}
h1.h1{font-size:22px;font-weight:800;margin:0}
.sub{color:var(--muted);font-size:13px;margin:3px 0 0}
.pill{display:inline-flex;align-items:center;gap:7px;background:var(--panel);border:1px solid var(--line2);border-radius:999px;padding:6px 12px;font-size:12px;color:#cdd6e0}
.pill select{background:transparent;border:0;color:var(--text);font-size:12px;outline:none}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.card{background:var(--panel);border:1px solid var(--line2);border-radius:14px}
.cap{font-size:10px;letter-spacing:1.3px;color:var(--muted2);font-weight:700}
.big{font-size:32px;font-weight:800}
.grid{display:grid;gap:14px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px}
.bg-green{background:rgba(53,208,138,.14);color:#57DDA0}
.bg-amber{background:rgba(242,178,62,.16);color:#F2B23E}
.bg-red{background:rgba(240,97,107,.16);color:#F0616B}
.bg-blue{background:rgba(92,167,246,.18);color:#a6d2ff}
table{width:100%;border-collapse:collapse}
th{font-size:10px;letter-spacing:1px;color:var(--muted2);text-align:left;font-weight:700;padding:0 10px 10px}
td{padding:11px 10px;border-top:1px solid var(--line);font-size:13px}
.num{font-variant-numeric:tabular-nums}
input,select,textarea{background:#0d1218;border:1px solid var(--line2);color:var(--text);border-radius:9px;padding:9px 11px;font-size:13px;font-family:inherit;width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(92,167,246,.15)}
label{font-size:12px;color:var(--muted);display:block;margin:0 0 5px}
.field{margin-bottom:13px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--grad);color:#fff;border:0;border-radius:9px;padding:10px 16px;font-size:13px;font-weight:600;cursor:pointer;text-decoration:none;transition:filter .15s}
.btn:hover{filter:brightness(1.1);color:#fff}
.btn.ghost{background:var(--panel);border:1px solid var(--line2);color:#cdd6e0}
.btn.ghost:hover{filter:none;background:var(--panel2)}
.btn.danger{background:#2c1620;border:1px solid #7a2b3e;color:#F0839B}
.btn.danger:hover{filter:none;background:#381a28}
.btn.sm{padding:6px 11px;font-size:12px}
.row{display:flex;gap:10px;align-items:center}
.flash{padding:11px 14px;border-radius:10px;margin-bottom:16px;font-size:13px}
.flash.ok{background:rgba(53,208,138,.12);border:1px solid #2a6b4c;color:#8DEBBB}
.flash.err{background:rgba(240,97,107,.12);border:1px solid #7a2b3e;color:#F4A0B0}
.tabbar{display:flex;gap:8px;margin:0 0 18px;flex-wrap:wrap}
.tabbar a{font-size:12px;color:#a2afbc;padding:7px 13px;border-radius:8px;border:1px solid var(--line2)}
.tabbar a.on{background:rgba(58,146,237,.16);color:#fff;border-color:#3a546f;font-weight:600}
.muted{color:var(--muted2)}
.bar{height:8px;border-radius:6px;background:#0d1218;overflow:hidden}
.bar>span{display:block;height:100%}
/* login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(1200px 600px at 50% -10%,rgba(58,146,237,.18),transparent 60%),var(--bg)}
.login-card{width:360px;max-width:100%;background:var(--panel);border:1px solid var(--line2);border-radius:16px;padding:30px}