* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif; }

/* Public navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 54px;
}
.navbar .brand {
  font-size: 18px;
  font-weight: 700;
  color: #333;
  text-decoration: none;
  margin-right: 32px;
}
.navbar a.nav-link {
  font-size: 15px;
  color: #555;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}
.navbar a.nav-link:hover {
  background: #f0f0f0;
  color: #333;
}

/* Page card */
.page-card {
  max-width: 640px;
  margin: 100px auto 40px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  padding: 48px 44px;
}
.page-card h1 {
  font-size: 28px;
  color: #333;
  text-align: center;
  margin-bottom: 12px;
}
.page-card .divider {
  width: 60px;
  height: 3px;
  background: #4a90d9;
  margin: 0 auto 28px;
  border-radius: 2px;
}
.page-card p {
  font-size: 16px;
  line-height: 1.7;
  color: #555;
  text-align: center;
  margin-bottom: 12px;
}
.page-card .welcome {
  font-size: 18px;
  color: #333;
  font-weight: 600;
}
.page-card .notice {
  font-size: 13px;
  color: #999;
  margin-top: 16px;
}