html, body { margin: 0; padding: 0; background: #fff; color: #1b1b1b;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif; }
.wrap { min-height: 100vh; display: flex; flex-direction: column; align-items: center;
  padding: 56px 16px 40px; }
.brand { margin-bottom: 28px; text-align: center; }
.brand img { max-height: 72px; max-width: 280px; display: none; object-fit: contain; }
.brand img.is-on,
.brand img[src]:not([src=""]) { display: block; margin: 0 auto; }
.brand-fallback { display: flex; align-items: center; gap: 10px; justify-content: center; }
.brand-fallback.is-off,
.brand-fallback[hidden] { display: none !important; }
.brand-fallback .mark { font-size: 40px; color: #3d8c3d; }
.brand-fallback .word { font-size: 32px; font-weight: 600; color: #3a3a3a; }
.card { width: 360px; max-width: 100%; border: 1px solid #ddd; border-radius: 2px;
  box-shadow: 0 1px 4px rgba(0,0,0,.08); padding: 22px 24px 26px; background: #fff; }
.card h1 { font-size: 20px; margin: 0 0 18px; font-weight: 600; }
label { display: block; font-size: 13px; margin: 0 0 6px; }
input[type=text], input[type=password] {
  width: 100%; box-sizing: border-box; height: 36px; padding: 6px 10px;
  border: 1px solid #bbb; border-radius: 2px; font-size: 14px; outline: none; }
input:focus { border-color: #2b9ad6; box-shadow: 0 0 0 2px rgba(43,154,214,.25); }
.chk { margin: 10px 0 14px; font-size: 13px; display: flex; align-items: center; gap: 8px; }
.btn { width: 100%; height: 40px; border: 0; background: #3d8c3d; color: #fff;
  font-size: 15px; font-weight: 600; cursor: pointer; border-radius: 2px; margin-top: 14px; }
.btn:hover { background: #347834; }
.err { color: #c0392b; font-size: 13px; margin: 8px 0 0; }
.who { font-size: 13px; margin: 0 0 14px; color: #333; }
.who a { color: #1a73c8; text-decoration: none; }