* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: #0b1020;
  color: #fff;
}

.topbar {
  width: 100%;
  height: 64px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 0 24px;
}

.user-area {
  display: flex;
  align-items: center;
}

.login-btn,
.logout-btn {
  border: 1px solid #3a4a7a;
  background: #1b2750;
  color: #fff;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
}

.login-btn:hover,
.logout-btn:hover {
  background: #25356f;
}

.user-profile {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.user-profile img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid #5d73b7;
}

.center-wrap {
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 14px;
}

h1 {
  margin: 0;
  font-size: 48px;
}

.subtitle {
  margin: 0;
  font-size: 20px;
  opacity: 0.85;
}

.workflow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 18px;
  min-width: 150px;
  height: 44px;
  text-decoration: none;
  border-radius: 10px;
  background: #3f74f7;
  color: #fff;
  font-size: 18px;
  border: 1px solid #4f7ffc;
  transition: opacity 0.2s ease;
}

.workflow-btn:hover {
  opacity: 0.9;
}

.workflow-btn.disabled {
  background: #7f8796;
  border-color: #9098a6;
  cursor: not-allowed;
}

.workflow-btn.disabled:hover {
  opacity: 1;
}