:root {
  --bg: #f7f3ea;
  --paper: #fffdf7;
  --ink: #17324d;
  --muted: #52687c;
  --line: #d8cdb7;
  --teal: #2f8f83;
  --blue: #315f9f;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
textarea {
  font: inherit;
}

.admin-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.94);
  backdrop-filter: blur(16px);
}

.admin-header p {
  margin: 0 0 4px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.admin-header h1 {
  margin: 0;
  font-size: 30px;
}

.admin-header nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-header a,
.admin-header button {
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  padding: 9px 16px;
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
}

.admin-header a {
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--paper);
}

.admin-header button {
  color: var(--paper);
  background: var(--teal);
}

.admin-shell {
  max-width: 1120px;
  margin-inline: auto;
  padding: 28px clamp(18px, 5vw, 64px) 72px;
}

.admin-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
  margin-bottom: 22px;
}

.admin-tools label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 800;
}

.admin-tools input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--paper);
}

.admin-tools p {
  margin: 0;
  color: var(--muted);
  white-space: nowrap;
}

.content-form {
  display: grid;
  gap: 14px;
}

.field-card {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--paper);
}

.field-card label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink);
  font-weight: 900;
}

.field-card code {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.field-card textarea {
  width: 100%;
  min-height: 92px;
  resize: vertical;
  border: 1px solid rgba(82, 104, 124, 0.28);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--ink);
  background: #fffefa;
  line-height: 1.65;
}

.field-card[hidden] {
  display: none;
}

@media (max-width: 720px) {
  .admin-header,
  .admin-tools {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .admin-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .admin-header nav {
    width: 100%;
  }

  .admin-header a,
  .admin-header button {
    flex: 1;
    text-align: center;
  }
}