:root {
  color-scheme: light;
  --page: #f5f7fb;
  --panel: #ffffff;
  --ink: #172033;
  --muted: #647084;
  --line: #d9e0ea;
  --accent: #3157d5;
  --accent-weak: #e8edff;
  --success: #167750;
  --danger: #b42318;
  --shadow: 0 18px 45px rgba(20, 32, 55, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

button,
input {
  font: inherit;
}

button {
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 0 16px;
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  background: #2448bc;
}

input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 0 12px;
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(49, 87, 213, 0.14);
}

.admin-shell {
  width: min(1180px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.admin-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: stretch;
  background: #172033;
  color: #fff;
  border-radius: 8px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.admin-hero-copy h1 {
  margin: 10px 0 12px;
  font-size: 34px;
  line-height: 1.15;
}

.hero-summary {
  max-width: 760px;
  margin: 0;
  color: #dbe4f2;
  line-height: 1.8;
}

.eyebrow {
  margin: 0;
  color: #7d8aa0;
  font-size: 13px;
  font-weight: 700;
}

.admin-hero .eyebrow {
  color: #aebee0;
}

.admin-summary-grid span {
  display: block;
  color: #8a96aa;
  font-size: 13px;
  font-weight: 700;
}

.admin-summary-grid p {
  margin: 0;
  color: #6b778c;
  line-height: 1.6;
}

.admin-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}

.admin-summary-grid article,
.admin-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.admin-summary-grid article {
  padding: 18px;
}

.admin-summary-grid strong {
  display: block;
  margin: 8px 0 6px;
  font-size: 18px;
}

.admin-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.admin-panel {
  padding: 22px;
  box-shadow: 0 12px 30px rgba(20, 32, 55, 0.06);
}

.admin-key-panel {
  position: sticky;
  top: 18px;
}

.admin-stack {
  display: grid;
  gap: 18px;
}

.section-heading h2 {
  margin: 6px 0 0;
  font-size: 22px;
  line-height: 1.25;
}

.panel-title-row {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.admin-form {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.admin-form label {
  display: grid;
  gap: 8px;
  color: #3c4658;
  font-weight: 700;
}

.activation-grid {
  grid-template-columns: 180px minmax(220px, 1fr) auto;
  align-items: end;
}

.form-status,
.muted {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.form-status {
  border-radius: 8px;
  background: #f2f5f9;
  padding: 12px;
}

.form-status[data-mode="success"] {
  background: #e9f7f1;
  color: var(--success);
}

.form-status[data-mode="error"] {
  background: #fff0ed;
  color: var(--danger);
}

.result-panel {
  margin-top: 16px;
}

.code-box {
  display: block;
  width: fit-content;
  max-width: 100%;
  margin: 10px 0;
  border-radius: 8px;
  background: var(--accent-weak);
  color: #17358e;
  padding: 10px 12px;
  font-family: Consolas, "SFMono-Regular", monospace;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.list-panel {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.list-item {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcff;
  padding: 16px;
}

.list-item b {
  color: var(--ink);
  overflow-wrap: anywhere;
}

.list-item span,
.list-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.list-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.list-actions button {
  min-height: 36px;
  background: #edf1f7;
  color: #273247;
}

.list-actions button:hover {
  background: #dfe6f1;
}

@media (max-width: 920px) {
  .admin-shell {
    width: min(100% - 24px, 760px);
    padding-top: 14px;
  }

  .admin-hero,
  .admin-layout,
  .activation-grid {
    grid-template-columns: 1fr;
  }

  .admin-summary-grid {
    grid-template-columns: 1fr;
  }

  .admin-key-panel {
    position: static;
  }
}

@media (max-width: 560px) {
  .admin-shell {
    width: min(100% - 16px, 520px);
  }

  .admin-hero,
  .admin-panel {
    padding: 18px;
  }

  .admin-hero-copy h1 {
    font-size: 28px;
  }

  .panel-title-row {
    align-items: stretch;
    flex-direction: column;
  }
}