* { box-sizing: border-box; }
body {
  margin: 0;
  background: #f3f6f8;
  color: #102030;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: 14px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 32px;
  background: #0d1824;
  color: #fff;
}
h1, h2, p { margin: 0; }
.topbar p { margin-top: 8px; color: #b8c7d6; }
main { max-width: 1280px; margin: 24px auto; padding: 0 20px 40px; }
.card, .login-card, .license-item {
  background: #fff;
  border: 1px solid #d5e0ea;
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(15, 35, 55, 0.08);
}
.card { padding: 20px; margin-bottom: 18px; }
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.section-head span, summary span { color: #60758b; }
.grid { display: grid; gap: 14px; }
.form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
label { display: grid; gap: 7px; color: #425a70; font-weight: 600; }
input, select, textarea {
  width: 100%;
  border: 1px solid #cddbe7;
  border-radius: 6px;
  padding: 11px 12px;
  background: #fbfdff;
  color: #102030;
  font: inherit;
}
textarea { min-height: 80px; resize: vertical; }
.wide { grid-column: 1 / -1; }
.actions { display: flex; justify-content: flex-end; gap: 10px; }
button, .button {
  border: 1px solid #cddbe7;
  border-radius: 6px;
  padding: 10px 16px;
  background: #fff;
  color: #102030;
  text-decoration: none;
  cursor: pointer;
  font-weight: 700;
}
.primary { border-color: #168c6a; background: #168c6a; color: #fff; }
.danger-button { border-color: #d64040; background: #d64040; color: #fff; }
.alert { padding: 12px 14px; border-radius: 6px; margin-bottom: 16px; font-weight: 700; }
.success { background: #e9f8f2; color: #08714f; border: 1px solid #bcebd9; }
.danger { background: #fff0f0; color: #b52323; border: 1px solid #ffc5c5; }
.license-item { padding: 0; margin-bottom: 12px; overflow: hidden; }
summary {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) repeat(4, auto);
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
}
.nested { padding: 18px; border-top: 1px solid #e3ecf4; }
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 4px 10px;
  background: #edf4fa;
  color: #4b6378;
  font-weight: 700;
}
.pill.active { background: #ddf6ec; color: #08714f; }
.pill.paused { background: #fff4d8; color: #8a5a00; }
.pill.disabled { background: #ffe6e6; color: #a52626; }
.login-page { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: min(420px, 100%); padding: 28px; display: grid; gap: 14px; }
.login-card h1 { color: #168c6a; }
@media (max-width: 800px) {
  .form-grid, summary { grid-template-columns: 1fr; }
  .actions { justify-content: stretch; flex-direction: column; }
}