* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f4f6f8; color: #1f2933;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 16px; }
.card { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
h1 { font-size: 18px; margin: 0 0 16px; }
label { display: block; font-size: 13px; color: #52606d; margin: 12px 0 6px; }
input { width: 100%; padding: 10px 12px; border: 1px solid #d9e2ec; border-radius: 8px; font-size: 15px; }
button {
  margin-top: 16px; width: 100%; padding: 11px; border: 0; border-radius: 8px;
  background: #2563eb; color: #fff; font-size: 15px; cursor: pointer;
}
button:disabled { background: #9aa5b1; cursor: not-allowed; }
.msg { margin-top: 12px; font-size: 13px; color: #b91c1c; min-height: 18px; }
.center { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login-card { width: 100%; max-width: 360px; }
.topbar {
  background: #fff; border-bottom: 1px solid #e4e9f0; padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.topbar .who { font-size: 13px; color: #52606d; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 16px; }
.tile { background: #fff; border-radius: 10px; padding: 16px; box-shadow: 0 1px 3px rgba(0,0,0,.05); }
.tile b { display: block; font-size: 22px; margin-top: 6px; }
.tile span { font-size: 13px; color: #7b8794; }
.muted { color: #7b8794; font-size: 13px; }