.card-item {
  width: 560px;
  height: 279px;
  background: #ffffff;
  box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.13);
  border-radius: 14px 14px 14px 14px;
  padding: 36px 36px 0 36px;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-item .version {
  position: absolute;
  left: 36px;
  bottom: 48px;
  font-weight: 500;
  font-size: 20px;
  color: #333333;
  line-height: 28px;
  opacity: 0;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.card-item .version-item {
  display: flex;
  align-items: center;
  position: absolute;
  left: 36px;
  bottom: 36px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card-item-app.active .version-item,
.card-item-plugin.active .version-item {
  opacity: 1;
}

.card-item-app.active .version,
.card-item-plugin.active .version {
  opacity: 1;
  color: #ffffff;
}

.card-item .download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 144px;
  height: 48px;
  background: #fff;
  border-radius: 36px;
  position: absolute;
  right: 36px;
  bottom: 38px;
  opacity: 0;
  transition: opacity 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.card-item-app.active .download-btn,
.card-item-plugin.active .download-btn {
  opacity: 1;
}

.card-item .download-btn .download-btn-text {
  font-weight: 500;
  font-size: 20px;
  color: #333333;
  line-height: 24px;
  margin-left: 12px;
  transition: color 0.3s ease;
}

.card-item .download-btn:hover .download-btn-text {
  color: #437cf7;
}

.card-item .download-btn .download-btn-icon {
  transition: opacity 0.3s ease;
}

.card-item .download-btn .download-btn-icon-active {
  display: none;
}

.card-item .download-btn:hover .download-btn-icon {
  display: none;
}

.card-item .download-btn:hover .download-btn-icon-active {
  display: block;
}

.card-item-app.active,
.card-item-plugin.active {
  background: linear-gradient(37deg, #437cf7 0%, #82b3ff 100%);
  box-shadow: 0px 0px 17px 0px #437cf7;
  transform: scale(1.12);
  z-index: 10;
}

.card-item-app.active .label-1,
.card-item-app.active .label-2,
.card-item-app.active .label-3,
.card-item-plugin.active .label-1,
.card-item-plugin.active .label-2,
.card-item-plugin.active .label-3 {
  color: #ffffff;
}

.logo-container {
  position: relative;
  width: 36px;
  height: auto;
}

.logo-default {
  display: block;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.logo-hover {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card-item-plugin.active .logo-default {
  opacity: 0;
}

.card-item-plugin.active .logo-hover {
  opacity: 1;
}

.recommend-icon {
  position: absolute;
  right: -32px;
  top: -32px;
}

.label-1 {
  font-weight: 700;
  font-size: 36px;
  color: #333333;
  line-height: 50px;
  margin-left: 12px;
}

.label-2 {
  font-weight: 500;
  font-size: 36px;
  color: #333333;
  line-height: 50px;
  margin-left: 12px;
}

.label-3 {
  margin-top: 24px;
  font-weight: 400;
  font-size: 20px;
  color: #999999;
  line-height: 28px;
}

.download-item {
  box-shadow: 0px 2px 9px 0px rgba(67, 124, 247, 0.24);
  background: #ffffff;
  border-radius: 80px 80px 80px 80px;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
}

.download-item-title {
  font-weight: 500;
  font-size: 20px;
  color: #333333;
  line-height: 24px;
  margin-right: 8px;
}

.download-item-title-2 {
  font-weight: 400;
  font-size: 20px;
  color: #333333;
  line-height: 24px;
}

.download-item-version {
  font-weight: 400;
  font-size: 18px;
  color: #999999;
  line-height: 24px;
  margin-top: 8px;
}

.download-item-icon {
  position: absolute;
  width: 24px;
  height: 24px;
  right: 24px;
  bottom: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.download-item:hover .download-item-icon {
  opacity: 1;
}

.download-item:hover .download-item-title,
.download-item:hover .download-item-title-2 {
  color: #437cf7;
  transition: color 0.3s ease;
}

.container-2 {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container-2 .title {
  font-weight: 700;
  font-size: 48px;
  color: #333333;
  line-height: 67px;
}

.container-2 .title-2 {
  font-weight: 500;
  font-size: 36px;
  color: #333333;
  line-height: 50px;
}

.container-2 .tool-text-1 {
  font-weight: 700;
  font-size: 36px;
  color: #2b7fff;
  line-height: 50px;
  transition: color 0.3s ease, font-weight 0.3s ease;
}

.container-2 .tool-text-2 {
  font-weight: 600;
  font-size: 36px;
  color: #333333;
  line-height: 50px;
  transition: color 0.3s ease, font-weight 0.3s ease;
}

.container-2 .tool-tab {
  user-select: none;
}

.container-2 .tool-tab:hover {
  opacity: 0.8;
}

.container-3 {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #f7f8fb;
}

.container-3 .title {
  font-weight: 700;
  font-size: 48px;
  color: #333333;
  line-height: 67px;
}

.container-3 .tool-text-1 {
  font-weight: 700;
  font-size: 36px;
  color: #2b7fff;
  line-height: 50px;
}

.container-3 .tool-text-2 {
  font-weight: 600;
  font-size: 36px;
  color: #333333;
  line-height: 50px;
}

/* 导航菜单样式 */
nav {
  display: flex;
  align-items: center;
}

.nav-link {
  height: 40px;
  font-weight: 500;
  font-size: 20px;
  color: #333333;
  line-height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #437cf7;
}

.nav-item-dropdown {
  position: relative;
  margin-right: 52px;
}

.dropdown-arrow {
  transition: transform 0.3s ease;
  display: inline-block;
}

.nav-item-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: -70px;
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  padding: 8px 0;
  z-index: 1000;
}

.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-title {
  display: block;
  padding: 12px 20px 8px 20px;
  font-weight: 500;
  font-size: 16px;
  color: #333333;
  line-height: 22px;
  white-space: nowrap;
  cursor: default;
  pointer-events: none;
}

.dropdown-divider {
  height: 1px;
  background-color: #e5e5e5;
  margin: 8px 12px;
}

.dropdown-item {
  display: block;
  padding: 12px 20px;
  font-weight: 400;
  font-size: 16px;
  color: #333333;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.dropdown-item:hover {
  background-color: #f5f5f5;
  color: #437cf7;
}

.dropdown-item:first-child {
  margin-top: 0;
}

.dropdown-item:last-child {
  margin-bottom: 0;
}