:root {
  --blue: #1677ff;
  --ink: #14213d;
  --muted: #667085;
  --line: #dbe4ef;
  --wash: #f4f8fc;
}

* { box-sizing: border-box; }

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

.admin-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 20px;
}

.login-card,
.panel,
.admin-header {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 48px rgba(20, 33, 61, .08);
}

.login-card {
  max-width: 460px;
  margin: 12vh auto 0;
  padding: 32px;
}

h1, h2, p { margin-top: 0; }
p { color: var(--muted); }

label {
  display: block;
  margin: 14px 0;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
}

button {
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--blue);
  border-radius: 6px;
  color: #fff;
  background: var(--blue);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.hidden { display: none; }

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 18px;
  padding: 22px;
}

.admin-header a {
  color: var(--blue);
  font-weight: 800;
}

.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.panel {
  padding: 22px;
}

.action-bar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0 4px;
}

.leads-panel {
  margin-top: 20px;
}

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

.leads-list {
  display: grid;
  gap: 12px;
}

.lead {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fbff;
}

.lead b {
  color: var(--blue);
}

.lead small {
  color: var(--muted);
}

@media (max-width: 780px) {
  .editor-grid,
  .admin-header {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }
}