body { font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
       max-width: 560px; margin: 40px auto; padding: 0 16px; line-height: 1.7; }
h1 { margin-bottom: 10px; }
h2 { font-size: 17px; margin: 24px 0 8px; }
.bar { padding: 10px 14px; border-radius: 8px; background: #f1f3f4;
       margin-bottom: 20px; font-size: 15px; }
.bar.on  { background: #e6f4ea; color: #137333; }
.bar.off { background: #fce8e6; color: #c5221f; }
form { display: grid; gap: 12px; margin: 12px 0 6px; }
label { display: grid; gap: 6px; font-size: 14px; color: #3c4043; }
input { padding: 10px 12px; font-size: 16px; border: 1px solid #dadce0; border-radius: 6px; }
input:focus { outline: 2px solid #1a73e8; outline-offset: 1px; border-color: transparent; }
button { padding: 11px 16px; font-size: 16px; border: 0; border-radius: 6px;
         background: #1a73e8; color: #fff; cursor: pointer; }
button.ghost { background: #fff; color: #1a73e8; border: 1px solid #dadce0; }
button:disabled { opacity: .6; cursor: progress; }
.msg { min-height: 22px; font-size: 14px; }
.ok { color: #137333; }
.err { color: #c5221f; }
.hint { font-size: 13px; color: #5f6368; }
hr { border: 0; border-top: 1px solid #eee; margin: 26px 0; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { border: 1px solid #e0e0e0; padding: 6px 10px; text-align: left; vertical-align: top; }
tbody th { width: 36%; font-weight: 500; background: #fafafa; }