.appMain {
  /* ============== Responsive ============== */
}
.appMain .app-main-content {
  max-width: 1200px;
  margin: 40px auto;
  display: flex;
  gap: 20px;
  padding: 0 20px;
  transition: all 0.3s ease;
  box-sizing: border-box;
}
.appMain .app-main-content .mail-sidebar {
  width: 240px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}
.appMain .app-main-content .mail-sidebar .sidebar-item {
  padding: 16px 20px;
  cursor: pointer;
  background: #f4f4f4;
  color: #666;
  border-left: 3px solid transparent;
  transition: all 0.3s ease;
  font-size: 16px;
  border-bottom: 1px solid #fff;
}
.appMain .app-main-content .mail-sidebar .sidebar-item:hover {
  background: #f2f8ff;
}
.appMain .app-main-content .mail-sidebar .sidebar-item.active {
  background: #f2f8ff;
  color: #333;
  border-left-color: #2b70ff;
}
.appMain .app-main-content .mail-content {
  flex-grow: 1;
  background: #fff;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}
.appMain .app-main-content .mail-content .config-top-block {
  padding: 40px;
  border: 1px solid #E1E1E1;
}
.appMain .app-main-content .mail-content .config-top-block .panel-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 30px;
}
.appMain .app-main-content .mail-content .config-top-block .panel-header .header-icon {
  width: 64px;
  height: 64px;
  background: #1875ff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 32px;
  flex-shrink: 0;
}
.appMain .app-main-content .mail-content .config-top-block .panel-header .header-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.appMain .app-main-content .mail-content .config-top-block .panel-header .header-text h2 {
  margin: 0 0 8px 0;
  font-size: 24px;
  color: #333;
}
.appMain .app-main-content .mail-content .config-top-block .panel-header .header-text p {
  margin: 0;
  color: #888;
  font-size: 14px;
  line-height: 1.4;
}
.appMain .app-main-content .mail-content .config-top-block .feature-banner {
  background: #fff5eb;
  padding: 12px 20px;
  border-left: 3px solid #ff8f4a;
  color: #ff8f4a;
  font-size: 14px;
  margin-bottom: 30px;
  line-height: 1.6;
}
.appMain .app-main-content .mail-content .config-top-block .feature-banner .feature-label {
  color: #666;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .el-form-item {
  margin-bottom: 24px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .user-input-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .user-input-group .unit-hint {
  color: #999;
  font-size: 14px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .capacity-text {
  color: #666;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .domain-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .domain-group .at-symbol {
  font-size: 16px;
  color: #333;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .domain-group .domain-input {
  width: 240px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .domain-group .no-domain-btn {
  color: #ff8f4a;
  padding: 0;
  font-size: 14px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .period-group .el-radio-button__inner {
  width: 100px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .period-group .el-radio-button__orig-radio:checked + .el-radio-button__inner {
  background-color: #1875ff;
  border-color: #1875ff;
  box-shadow: -1px 0 0 0 #1875ff;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 2px;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .radio-group .radio-btn {
  width: 120px;
  height: 36px;
  line-height: 34px;
  text-align: center;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  cursor: pointer;
  color: #606266;
  transition: all 0.3s;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .radio-group .radio-btn.active {
  background-color: #1783FF;
  border-color: #1783FF;
  color: #fff;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .radio-group .radio-btn:hover:not(.active) {
  border-color: #c6e2ff;
  color: #1783FF;
  background-color: #ecf5ff;
}
.appMain .app-main-content .mail-content .config-top-block .config-form .radio-group.year-group .radio-btn {
  width: 108px;
}
.appMain .app-main-content .mail-content .config-top-block .divider {
  height: 1px;
  background: #ebeef5;
  margin: 40px 0 30px 0;
}
.appMain .app-main-content .mail-content .config-top-block .price-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.appMain .app-main-content .mail-content .config-top-block .price-section .price-display {
  display: flex;
  align-items: baseline;
}
.appMain .app-main-content .mail-content .config-top-block .price-section .price-display .price-amount {
  font-size: 32px;
  color: #ff6a00;
  font-weight: bold;
}
.appMain .app-main-content .mail-content .config-top-block .price-section .price-display .price-unit {
  color: #666;
  margin-left: 4px;
  font-size: 14px;
}
.appMain .app-main-content .mail-content .config-top-block .price-section .next-btn {
  width: 168px;
  background: #ff6a00;
  border-color: #ff6a00;
  font-size: 14px;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.appMain .app-main-content .mail-content .config-top-block .price-section .next-btn:hover {
  background: #ff8533;
  border-color: #ff8533;
  box-shadow: 0 8px 18px rgba(255, 106, 0, 0.25);
}
.appMain .app-main-content .mail-content .config-top-block .agreement .el-checkbox__label {
  transform: translateY(1px);
}
.appMain .app-main-content .mail-content .config-top-block .agreement-link {
  color: #409eff;
  text-decoration: none;
}
.appMain .app-main-content .mail-content .config-top-block .agreement-link:hover {
  text-decoration: underline;
}
.appMain .app-main-content .mail-content .product-advantages {
  border: 1px solid #E1E1E1;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-header {
  background-color: #f7f7f7;
  padding: 16px 40px;
  font-size: 18px;
  color: #333;
  border-bottom: 1px solid #E1E1E1;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list {
  padding: 40px;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item {
  display: flex;
  gap: 30px;
  margin-bottom: 40px;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item:last-child {
  margin-bottom: 0;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-content h3 {
  margin: 0 0 12px 0;
  font-size: 16px;
  color: #333;
  font-weight: bold;
}
.appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-content p {
  margin: 0;
  color: #666;
  font-size: 14px;
  line-height: 1.6;
}
@media (max-width: 1536px) {
  .appMain .app-main-content {
    margin: 30px auto;
  }
}
@media (max-width: 1280px) {
  .appMain .app-main-content .mail-sidebar {
    width: 200px;
  }
  .appMain .app-main-content .mail-content {
    gap: 30px;
  }
  .appMain .app-main-content .mail-content .config-top-block {
    padding: 30px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-header {
    padding: 16px 30px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list {
    padding: 30px;
  }
}
@media (max-width: 1024px) {
  .appMain .app-main-content {
    flex-direction: column;
  }
  .appMain .app-main-content .mail-sidebar {
    width: 100%;
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .appMain .app-main-content .mail-sidebar::-webkit-scrollbar {
    display: none;
  }
  .appMain .app-main-content .mail-sidebar .sidebar-item {
    flex: 1;
    text-align: center;
    border-bottom: 3px solid transparent;
    border-left: none;
    white-space: nowrap;
  }
  .appMain .app-main-content .mail-sidebar .sidebar-item.active {
    border-left-color: transparent;
    border-bottom-color: #2b70ff;
  }
}
@media (max-width: 768px) {
  .appMain .app-main-content {
    margin: 20px auto;
  }
  .appMain .app-main-content .mail-content {
    gap: 20px;
  }
  .appMain .app-main-content .mail-content .config-top-block {
    padding: 20px;
  }
  .appMain .app-main-content .mail-content .config-top-block .panel-header {
    gap: 15px;
  }
  .appMain .app-main-content .mail-content .config-top-block .panel-header .header-icon {
    width: 50px;
    height: 50px;
  }
  .appMain .app-main-content .mail-content .config-top-block .panel-header .header-text h2 {
    font-size: 20px;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .el-form-item {
    margin-bottom: 20px;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .el-form-item__label {
    float: none;
    display: block;
    text-align: left;
    width: 100% !important;
    padding-bottom: 8px;
    line-height: 1.2;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .el-form-item__content {
    margin-left: 0 !important;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .period-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .period-group .el-radio-button {
    flex: 1 1 calc(50% - 10px);
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .period-group .el-radio-button .el-radio-button__inner {
    width: 100%;
    border-radius: 4px !important;
    border: 1px solid #dcdfe6 !important;
    box-shadow: none !important;
  }
  .appMain .app-main-content .mail-content .config-top-block .divider {
    margin: 25px 0 20px 0;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-header {
    padding: 16px 20px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list {
    padding: 20px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item {
    gap: 20px;
    margin-bottom: 30px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-icon {
    width: 50px;
    height: 50px;
  }
}
@media (max-width: 640px) {
  .appMain .app-main-content {
    padding: 0 10px;
  }
  .appMain .app-main-content .mail-sidebar .sidebar-item {
    padding: 12px 15px;
    font-size: 14px;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .domain-group {
    flex-wrap: wrap;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .domain-group .domain-input {
    width: calc(100% - 30px);
    flex-grow: 1;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .domain-group .no-domain-btn {
    width: 100%;
    text-align: left;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .user-input-group {
    flex-direction: column;
    align-items: flex-start;
  }
  .appMain .app-main-content .mail-content .config-top-block .config-form .user-input-group .el-input-number {
    width: 100%;
  }
  .appMain .app-main-content .mail-content .config-top-block .price-section {
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
  }
  .appMain .app-main-content .mail-content .config-top-block .price-section .price-display .price-amount {
    font-size: 28px;
  }
  .appMain .app-main-content .mail-content .config-top-block .price-section .next-btn {
    width: 100%;
    height: 44px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item {
    flex-direction: column;
    gap: 12px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-icon {
    width: 48px;
    height: 48px;
  }
  .appMain .app-main-content .mail-content .product-advantages .advantages-list .advantage-item .advantage-content h3 {
    font-size: 15px;
  }
}