* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", sans-serif;
  background: #eef4ef;
  color: #172014;
}
a { color: inherit; text-decoration: none; }
h1, h2, p { margin: 0; }
.admin-shell { width: min(100%, 1200px); margin: 0 auto; padding: 24px 16px 40px; }
.login-card, .admin-card {
  background: #fff;
  border: 1px solid #dbe7dd;
  border-radius: 22px;
  padding: 22px;
  box-shadow: 0 12px 30px rgba(18, 40, 25, 0.06);
  margin-bottom: 18px;
}
.admin-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 18px; }
.eyebrow { margin: 0 0 4px; color: #56705c; font-size: 12px; text-transform: uppercase; letter-spacing: 0.16em; }
h1 { font-size: 34px; }
h2 { margin-bottom: 16px; }
.admin-actions { display: flex; gap: 10px; }
.admin-actions a, button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 42px;
  padding: 0 16px; border: none; border-radius: 12px; background: #1d6b3a; color: #fff; cursor: pointer; font-weight: 700;
}
.danger, .admin-actions a:last-child { background: #b93d31; }
.flash { padding: 14px 16px; border-radius: 14px; margin-bottom: 16px; }
.success { background: #dff3e4; color: #15552f; }
.error { background: #f8dedd; color: #7c221b; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.single { grid-template-columns: 1fr; }
.form-grid label { display: grid; gap: 8px; }
.full { grid-column: 1 / -1; }
.checkbox { display: flex !important; align-items: center; gap: 10px; padding-top: 30px; }
input, select, textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #cfded2; border-radius: 12px; font: inherit; background: #fbfdfb;
}
.stack { display: grid; gap: 16px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid #e4ece5; padding: 12px 10px; text-align: left; vertical-align: top; }
.actions { display: flex; gap: 10px; align-items: center; }
.actions form { margin: 0; }
@media (max-width: 900px) {
  .admin-header, .form-grid { grid-template-columns: 1fr; }
  .admin-header { align-items: flex-start; }
  .admin-actions { flex-wrap: wrap; }
}