* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: #eef2f6;
  color: #26323f;
}
.shell {
  width: min(460px, 100%);
  margin: 0 auto;
  padding: 22px 16px;
}
.panel {
  background: #fff;
  border: 1px solid #d9e2ec;
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 8px 24px rgba(16,24,40,.08);
}
.hidden { display: none; }
.brand, .top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand { justify-content: flex-start; margin-bottom: 20px; }
.mark {
  width: 52px;
  height: 52px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: #343b43;
  color: #fff;
  font-weight: 800;
}
h1 { margin: 0; font-size: 24px; }
h2 { margin: 22px 0 12px; font-size: 18px; }
p { margin: 4px 0; color: #667085; }
.form { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-weight: 700; font-size: 14px; }
input {
  width: 100%;
  height: 48px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0 12px;
  font-size: 16px;
}
button {
  height: 50px;
  border: 0;
  border-radius: 8px;
  background: #1f6feb;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
}
.ghost {
  width: 84px;
  background: #343b43;
}
.units, .modules-grid { display: grid; gap: 10px; }
.unit, .module {
  width: 100%;
  min-height: 64px;
  text-align: left;
  padding: 10px 14px;
  background: #f8fafc;
  color: #26323f;
  border: 1px solid #d9e2ec;
}
.module {
  display: block;
  text-decoration: none;
  border-radius: 8px;
}
.unit strong, .module strong { display: block; font-size: 16px; }
.unit span, .module span { color: #667085; font-size: 13px; }
.msg { min-height: 22px; color: #b42318; font-weight: 700; }