:root {
  --color-primary: #003366;
  --color-secondary: #6699cc;
  --color-bg: #ffffff;
  --color-bg-soft: #f5f7fa;
  --color-text: #1a2b3c;
  --color-muted: #5c6b7a;
  --color-border: #d8e1ea;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(0, 51, 102, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  color: var(--color-text);
  background: var(--color-bg);
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
}

a {
  color: var(--color-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.btn:hover {
  opacity: 0.92;
}

.btn-secondary {
  background: var(--color-secondary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 15px;
  background: #fff;
}

.textarea {
  min-height: 96px;
  resize: vertical;
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(102, 153, 204, 0.15);
  color: var(--color-primary);
  font-size: 13px;
}

.page-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
}

.page-header img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(0, 51, 102, 0.12);
}

.page-header h1 {
  margin: 0;
  font-size: 28px;
  color: var(--color-primary);
  font-family: "KaiTi", "STKaiti", "Microsoft YaHei", serif;
  font-weight: 700;
}

.page-header p {
  margin: 4px 0 0;
  color: var(--color-muted);
  font-size: 14px;
}

.alert {
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 14px;
}

.alert-error {
  background: #fff1f0;
  color: #a8071a;
  border: 1px solid #ffccc7;
}

.alert-success {
  background: #f6ffed;
  color: #237804;
  border: 1px solid #b7eb8f;
}

.alert-info {
  background: #f0f7ff;
  color: var(--color-primary);
  border: 1px solid #bfd7f0;
}

.hidden {
  display: none !important;
}