* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul li {
  list-style: none;
}
a {
  text-decoration: none;
}
#header {
  position: sticky;
  top: 0;
  z-index: 9;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}
/* 弹窗遮罩层 */
.modal-mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}
/* 弹窗容器 */
.modal-container {
  background-color: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
  width: 80%;
  max-width: 900px;
  overflow: hidden;
}
/* 弹窗头部 */
.modal-header {
  padding: 20px;
  border-bottom: 1px solid #ebeef5;
}
.modal-title {
  font-size: 18px;
  font-weight: bold;
  color: #303133;
  margin: 0;
}
/* 弹窗内容区域 */
.modal-content {
  padding: 20px;
  max-height: 400px;
  overflow-y: auto;
}
/* 内容样式 */
.policy-content {
  font-size: 14px;
}
.policy-content p {
  text-indent: 2em;
  line-height: 1.5;
  color: #000;
  margin-bottom: 8px;
}
.policy-content strong {
  font-weight: bold;
}
/* 响应式调整 */
@media (max-width: 768px) {
  .modal-container {
    width: 90%;
    max-width: none;
  }
  .modal-content {
    max-height: 60vh;
  }
}
/* 标题区域 */
.title-column {
  background-color: #fff;
  padding: 40px 20px;
  margin-bottom: 20px;
  text-align: center;
}
.title-column p {
  font-size: 14px;
  color: #858585;
}
.title-column h2 {
  margin: 0 0 15px 0;
  font-size: 24px;
}
.title-column span {
  margin: 7px 0;
  color: #666;
}
.title-column .link {
  color: #1b5390;
  cursor: pointer;
  font-style: normal;
}
/* 表单区域 */
.form-column {
  background-color: #fff;
  padding: 20px;
  border-radius: 4px;
}
.form-row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
}
.form-group {
  flex: 0 0 50%;
  max-width: 50%;
  padding: 0 10px;
  margin-bottom: 20px;
}
.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  width: 120px;
}
.form-control {
  width: 100%;
  padding: 10px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
}
.form-control-one {
  width: 45%;
  padding: 10px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
}
.form-control-one:focus {
  border-color: #1b5390;
  outline: none;
}
.form-control:focus {
  border-color: #1b5390;
  outline: none;
}
.captcha-container {
  display: flex;
  gap: 10px;
}
.captcha-input {
  flex: 1;
}
.captcha-image {
  height: 35px;
  border-radius: 4px;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}
.submit-btn {
  background-color: #1b5390;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}
.btn {
  display: flex;
  justify-content: center;
}
.submit-btn:hover {
  background-color: #66b1ff;
}
/* 会员权限容器 */
.desc-column {
  background-color: #fff;
  padding-bottom: 32px;
}
/* 标题样式 */
.desc-column .title {
  height: 24px;
  line-height: 24px;
  font-size: 24px;
  font-weight: bold;
  color: #303133;
  margin: 0 0 36px;
  text-align: center;
}
/* 权限列表容器 */
.desc-column .features {
  padding: 0 80px;
  display: flex;
  justify-content: center;
  align-items: center;
}
/* 单个权限项 */
.desc-column .feature {
  flex: 1;
  height: 93px;
  border-right: 1px solid #cbcbcb;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
}
/* 图标样式 */
.desc-column .feature-icon {
  width: 61px;
  height: 61px;
  line-height: 61px;
  font-size: 58px;
  color: #1b5390;
  text-align: center;
}
/* 图标特殊样式 */
.desc-column .feature-icon .fi-list {
  font-size: 54px;
}
.desc-column .feature-icon .fi-lock {
  font-size: 54px;
}
.desc-column .feature-icon .fi-video {
  font-size: 70px;
}
.desc-column .feature-icon .fi-email {
  font-size: 50px;
}
/* 权限描述文字 */
.desc-column .feature-text {
  height: 14px;
  line-height: 14px;
  font-size: 14px;
  color: #909399;
  text-align: center;
}
/* 最后一个权限项去掉右边框 */
.desc-column .feature:last-child {
  border-right: none;
}
/* 响应式设计 - 小屏幕 */
@media (max-width: 768px) {
  .desc-column .features {
    padding: 0 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
  }
  .desc-column .feature {
    flex: none;
    width: 50%;
    margin-bottom: 16px;
    border-right: none;
  }
  /* 偶数项去掉右边框 */
  .desc-column .feature:nth-child(even) {
    border-right: none;
  }
}
/* 响应式调整 */
@media (max-width: 768px) {
  .form-group {
    flex: 0 0 100%;
    max-width: 100%;
  }
}
@media (max-width: 68.75rem) {
  footer {
    transition: 0.3s;
    display: none;
  }
}