*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #1a56db;
  --color-primary-dark: #1344b0;
  --color-text: #1f2937;
  --color-text-secondary: #6b7280;
  --color-bg: #f9fafb;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --max-width: 800px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(26, 86, 219, 0.08);
}

.policy-section a {
  color: var(--color-primary);
  text-decoration: none;
}

.policy-section a:hover {
  text-decoration: underline;
}

.policy-section .highlight,
.policy-section .marker {
  font-weight: 600;
}

.policy-index {
  list-style: none;
  margin-left: 0 !important;
  padding: 16px 20px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.policy-index li {
  margin-bottom: 6px;
}

.auth-form-block {
  margin: 16px 0;
  padding: 16px 20px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.auth-form-block p {
  margin-bottom: 8px;
}

/* Main */
.main {
  flex: 1;
  padding: 40px 0 60px;
}

.policy {
  background: var(--color-white);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 48px 56px;
}

.policy-header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.policy-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.update-date,
.effective-date {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Sections */
.policy-section {
  margin-bottom: 32px;
}

.policy-section:last-child {
  margin-bottom: 0;
}

.policy-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
}

.policy-section h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin: 16px 0 8px;
}

.policy-section p {
  margin-bottom: 12px;
  color: var(--color-text);
  text-align: justify;
}

.policy-section ul {
  margin: 12px 0 12px 24px;
}

.policy-section li {
  margin-bottom: 8px;
  color: var(--color-text);
}

.contact-list {
  list-style: none;
  margin-left: 0 !important;
  padding: 16px 20px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.contact-list li {
  margin-bottom: 4px;
}

.policy-table-wrap {
  margin: 16px 0;
  overflow-x: auto;
}

.policy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
}

.policy-table th,
.policy-table td {
  border: 1px solid var(--color-border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.policy-table th {
  background: var(--color-bg);
  font-weight: 600;
  white-space: nowrap;
}

.policy-table td:first-child {
  font-weight: 500;
}

/* Footer */
.footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  text-align: center;
}

.copyright {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.beian a {
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.beian a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .logo {
    font-size: 16px;
  }

  .policy {
    padding: 28px 20px;
    border-radius: 0;
    box-shadow: none;
  }

  .policy-header h2 {
    font-size: 22px;
  }

  .main {
    padding: 0;
  }
}