:root{
  --blue:#0D46C2; --blue2:#1C74F0; --cyan:#24CCFC; --deep:#062A86; --dark:#080B12;
  --line:#e3e8f0; --muted:#6b7280; --bg:#f5f7fb; --surface:#fff; --ok:#1e7e34; --warn:#c0392b;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,'Segoe UI',Roboto,'Microsoft YaHei',sans-serif;background:var(--bg);color:#1a1a1a;font-size:14px}
a{color:var(--blue);text-decoration:none}
.layout{display:flex;min-height:100vh}
.side{width:230px;background:linear-gradient(180deg,#062A86,#0D46C2);color:#fff;padding:20px 14px;position:sticky;top:0;height:100vh;overflow:auto}
.side .brand{font-weight:800;font-size:16px;margin-bottom:4px}
.side .brand small{display:block;font-weight:400;opacity:.7;font-size:11px;margin-top:3px}
.side nav a{display:block;padding:10px 12px;border-radius:10px;color:#dce6ff;margin-bottom:4px;font-size:13.5px}
.side nav a:hover{background:rgba(255,255,255,.12);color:#fff}
.side nav a.active{background:rgba(255,255,255,.18);color:#fff;font-weight:600}
.side .foot{margin-top:24px;font-size:11px;opacity:.6}
.main{flex:1;padding:28px 34px;max-width:1100px}
h1{font-size:22px;margin:0 0 4px}
.sub{color:var(--muted);margin:0 0 20px;font-size:13px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-bottom:18px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px}
.stat b{display:block;font-size:24px;color:var(--blue)}
.stat span{color:var(--muted);font-size:12px}
label{display:block;font-size:12.5px;font-weight:600;margin:14px 0 6px;color:#222}
input,textarea,select{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:13.5px;font-family:inherit;background:#fff}
textarea{resize:vertical;min-height:64px}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--blue2);box-shadow:0 0 0 3px rgba(28,116,240,.14)}
.row{display:flex;gap:12px}.row>div{flex:1}
.btn{display:inline-block;padding:10px 16px;border:0;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;font-weight:600;font-size:13.5px;cursor:pointer}
.btn:hover{filter:brightness(1.05)}
.btn.ghost{background:#eef2fb;color:var(--blue)}
.btn.danger{background:#fdeaea;color:var(--warn)}
.btn.small{padding:6px 11px;font-size:12.5px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.tabs a{padding:7px 13px;border:1px solid var(--line);border-radius:999px;font-size:12.5px;color:#444;background:#fff}
.tabs a.active{background:var(--blue);color:#fff;border-color:var(--blue)}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);font-size:13px}
th{color:var(--muted);font-weight:600;font-size:12px}
tr:hover td{background:#fafbfe}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:600}
.pill.feat{background:#e7f0ff;color:var(--blue)}
.pill.norm{background:#eef1f5;color:#555}
.alert{background:#eafaf0;color:var(--ok);border:1px solid #b6e2c4;padding:12px 14px;border-radius:10px;margin-bottom:16px;font-size:13.5px}
.alert.err{background:#fff0f0;color:var(--warn);border-color:#f3c0c0}
.fieldset{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:16px 0}
.fieldset>legend{font-weight:700;color:var(--blue);padding:0 6px;font-size:13px}
.rep{border:1px dashed var(--line);border-radius:10px;padding:10px 12px;margin-bottom:10px;position:relative;background:#fcfdff}
.rep .del{position:absolute;top:8px;right:10px}
.muted{color:var(--muted)}
.hr{height:1px;background:var(--line);margin:18px 0}
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#062A86,#0D46C2 60%,#1C74F0)}
.login{background:#fff;border-radius:18px;max-width:380px;width:100%;padding:30px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.login h1{color:var(--blue);font-size:20px}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;background:#0d1117;color:#9fe7a3;padding:12px 14px;border-radius:10px;white-space:pre-wrap;word-break:break-all}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.topbar .who{font-size:12.5px;color:var(--muted)}