/* 页面整体背景 */
body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans SC", "Noto Serif SC", sans-serif;

  background: linear-gradient(180deg, #eaf3ff, #d8e9ff);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 登录容器 */
.login-container {
  display: flex;
  width: 800px;
  max-width: 90%;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  overflow: hidden;
}

/* 左侧品牌区 */
.brand-side {
  flex: 1.5;
  background: linear-gradient(180deg, #cce0ff, #99c2ff);
  color: #fff;
  padding: 50px 30px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.brand-side h1 {
  margin: 0 0 20px 0;
  font-size: 2.5rem;
}

.brand-side p {
  font-size: 1.2rem;
}

/* 右侧登录框 */
.login-side {
  flex: 1.5;
  padding: 50px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-side h2 {
  margin-bottom: 30px;
  color: #2a63c2;
  font-size: 1.8rem;
}

/* 表单样式 */
.login-side form {
  display: flex;
  flex-direction: column;
}

.login-side label {
  margin-bottom: 6px;
  font-weight: 500;
  color: #333;
}

.login-side input {
  padding: 12px 14px;
  margin-bottom: 20px;
  border: 1px solid #c9dcff;
  border-radius: 8px;
  font-size: 1rem;
  outline: none;
  transition: all 0.3s ease;
}

.login-side input:focus {
  border-color: #2a63c2;
  box-shadow: 0 0 6px rgba(42, 99, 194, 0.3);
}

.login-side button {
  padding: 12px;
  border: none;
  border-radius: 8px;
  background-color: #2a63c2;
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.login-side button:hover {
  background-color: #1f4aa3;
}

/* 提示链接 */
.tips {
  margin-top: 15px;
  font-size: 0.9rem;
  color: #666;
}

.tips a {
  color: #2a63c2;
  text-decoration: none;
}

.tips a:hover {
  text-decoration: underline;
}

/* 响应式 */
@media (max-width: 700px) {
  .login-container {
    flex-direction: column;
    width: 90%;
  }

  .brand-side, .login-side {
    flex: 1;
    padding: 30px 20px;
  }

  .brand-side h1 {
    font-size: 2rem;
  }

  .login-side h2 {
    font-size: 1.5rem;
  }
}