*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;color:#1c1f24;background:#f5f6f8}
header{display:flex;gap:16px;align-items:center;padding:10px 20px;background:#fff;border-bottom:1px solid #dde0e5;flex-wrap:wrap}
nav{display:flex;gap:4px;flex:1}
nav button{white-space:nowrap;border:0;background:none;padding:6px 12px;border-radius:6px;cursor:pointer;font:inherit}
nav button.on{background:#e8eefc;color:#1b4fd8;font-weight:600}
main{max-width:1100px;margin:20px auto;padding:0 20px}
h2{margin:0 0 12px;font-size:18px}
section{background:#fff;border:1px solid #dde0e5;border-radius:8px;padding:16px;margin-bottom:16px;overflow-x:auto}
table{border-collapse:collapse;width:100%}
th,td{text-align:left;padding:6px 10px;border-bottom:1px solid #eceef1;vertical-align:top;font-size:14px}
th{color:#5b6470;font-weight:600}
form{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
label{display:flex;flex-direction:column;gap:3px;font-size:13px;color:#5b6470}
label.row{flex-direction:row;align-items:center;gap:6px}
input,select,textarea{font:inherit;padding:6px 8px;border:1px solid #c5cad2;border-radius:6px;background:#fff}
textarea{min-width:260px;min-height:70px;font-family:ui-monospace,Menlo,monospace;font-size:12px}
button.btn{padding:7px 14px;border:0;border-radius:6px;background:#1b4fd8;color:#fff;cursor:pointer;font:inherit}
button.btn.alt{background:#e8eaee;color:#1c1f24}
button.btn.danger{background:#c62828}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #1b4fd8;outline-offset:1px}
.key{background:#0f172a;color:#e2e8f0;padding:12px;border-radius:6px;font:12px/1.5 ui-monospace,Menlo,monospace;white-space:pre-wrap;word-break:break-all;margin:8px 0}
.note{color:#5b6470;font-size:13px}
.err{color:#c62828}
.ok{color:#2e7d32}
.login{max-width:380px;margin:80px auto;text-align:center}
a.btn{display:inline-block;padding:10px 18px;background:#1b4fd8;color:#fff;border-radius:6px;text-decoration:none}
@media(max-width:600px){nav{order:3;flex-basis:100%;overflow-x:auto}}