/* =========================================================
   下载页（download.php）1:1 复刻 i4.cn 产品中心 pros.html 视觉
   配色 / 字体 / 间距 / 圆角 对齐源站 product-center.css
   ========================================================= */

.i4-pc-sheet {
  background: linear-gradient(180deg, #e1e9ee 0%, #f3f3f3 100%);
}
.i4-pc-content {
  box-sizing: border-box;
  max-width: 1200px;
  margin: 0 auto;
  padding: 140px 0 60px 0;
}
.i4-pc-header {
  box-sizing: border-box;
  padding: 9px 0;
}
.i4-pc-title {
  font-size: 36px;
  font-weight: bold;
  line-height: 48px;
  margin: 0;
  padding: 0;
  text-align: center;
  letter-spacing: 0;
  color: #333;
}
.i4-pc-desic {
  font-size: 16px;
  font-weight: normal;
  line-height: 20px;
  box-sizing: border-box;
  padding-top: 12px;
  text-align: center;
  letter-spacing: 0;
  color: #999;
}

.product-ul {
  padding-top: 40px;
}
.product-ul .product-li {
  box-sizing: border-box;
  margin-top: 20px;
  padding: 0;
  padding-bottom: 20px;
  border-radius: 24px;
  background: #fff;
}
.product-ul .product-li:first-child {
  margin-top: 0;
}

.product-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
  height: 80px;
  padding: 0 40px;
}
.product-header .logo-box {
  position: relative;
  width: 200px;
  height: 80px;
}
.product-header .logo-box .logo {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
}
.product-header .logo-box .logo-i4 {
  top: 32px;
  left: 0;
  width: 166px;
  height: 40px;
}
.product-header .logo-box .logo-screen {
  top: 24px;
  left: -8px;
  width: 182px;
  height: 56px;
}
.product-header .logo-box .logo-remote {
  top: 24px;
  left: -8px;
  width: 176px;
  height: 56px;
}
.product-show-details {
  font-size: 14px;
  font-weight: normal;
  line-height: 24px;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0;
  color: rgba(51, 51, 51, 0.5);
}
.product-show-details:hover {
  color: #333;
}

.arctile-box {
  padding: 0 60px;
}
.arctile-box .arctile-li {
  box-sizing: border-box;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #eee;
}
.arctile-box .arctile-li:first-child {
  box-sizing: border-box;
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}
.arctile-box .arctile-item {
  display: flex;
  align-items: stretch;
}
.arctile-item .arctile-img {
  width: 400px;
  height: 260px;
  flex: none;
}
.arctile-item .arctile-img .img {
  width: 400px;
  height: 260px;
  margin: 0;
  padding: 0;
  object-fit: cover;
  border-radius: 12px;
}
.arctile-item .arctile-right {
  display: flex;
  flex: 1;
  flex-direction: column;
  box-sizing: border-box;
  height: 260px;
  padding: 40px 20px 40px 20px;
}
.arctile-item .arctile-right .arctile-text {
  flex: 1;
}
.arctile-item .arctile-right .arctile-btn {
  display: flex;
  align-items: center;
  flex: none;
}
.arctile-item .arctile-title {
  font-size: 24px;
  font-weight: normal;
  line-height: 32px;
  margin: 0;
  padding: 0;
  letter-spacing: 0;
  color: #333;
}
.arctile-item .arctile-desic {
  font-size: 16px;
  font-weight: normal;
  line-height: 20px;
  padding-top: 16px;
  letter-spacing: 0;
  color: #999;
}

/* 平台选择按钮 + hover 弹出下载面板 */
.arctile-btn .btn-li {
  position: relative;
  margin-left: 16px;
}
.arctile-btn .btn-li:first-child {
  margin-left: 0;
}
.arctile-btn .btn-li-href {
  margin-left: 24px;
}
.product-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 136px;
  height: 48px;
  margin: 0;
  padding: 0;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.05);
}
.product-btn:hover,
.product-btn:focus,
.product-btn:active {
  background: rgba(0, 0, 0, 0.1);
}
.product-btn .icon {
  width: 24px;
  height: 24px;
  margin: 0;
  padding: 0;
  object-fit: contain;
}
.product-btn .text {
  font-size: 16px;
  font-weight: normal;
  line-height: 20px;
  padding-left: 10px;
  letter-spacing: 0;
  color: #333;
}

.btn-li-visbled {
  position: absolute;
  z-index: 10;
  top: 56px;
  left: 0;
  visibility: hidden;
  transition: opacity 0.2s linear, transform 0.2s linear;
  transform: translateY(10px);
  opacity: 0;
}
.btn-li:hover .btn-li-visbled {
  visibility: visible;
  transform: translateY(0);
  opacity: 1;
}
/* 透明桥接区：覆盖触发按钮(48px)与弹窗(top:56px)之间的 8px 空隙，
   使鼠标从按钮移入弹窗时始终处于 .btn-li 的 hover 范围内，弹窗不消失 */
.btn-li-visbled::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -14px;
  height: 14px;
  background: transparent;
}
.btn-li-tips-box {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: 432px;
  padding: 16px 16px 0 16px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.1);
}
.btn-li-tips-box2 {
  padding: 24px 24px 0 24px;
}
.btn-li-tips-box3 {
  width: 240px;
  box-sizing: border-box;
  padding: 16px 30px 0 30px;
}
.site-new-oos-li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
  min-height: 56px;
  padding: 10px 0;
  border-bottom: 1px solid #f2f2f2;
}
.site-new-oos-li:last-of-type {
  border-bottom: none;
}
.site-new-oos-li .left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sscf-flex-center {
  display: flex;
  align-items: center;
}
.site-new-oos-li .label {
  font-size: 14px;
  line-height: 20px;
  color: #333;
}
.site-new-oos-li .th {
  font-size: 12px;
  line-height: 18px;
  color: #236ee7;
  margin-left: 8px;
}
.site-new-oos-li .desic {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: #999;
}
.site-new-oos-li .desic .oos-time {
  color: #bbb;
}
.site-new-oos-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  min-width: 96px;
  height: 36px;
  padding: 0 18px;
  border-radius: 8px;
  background: #236ee7;
  color: #fff !important;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s;
}
.site-new-oos-btn:hover {
  background: #1c5bd0;
}
.site-new-oos-btn .text1 {
  color: #fff;
}

/* iOS 安装指引 */
.ios-to-install .ios-title {
  font-size: 16px;
  font-weight: normal;
  line-height: 20px;
  box-sizing: border-box;
  width: 100%;
  letter-spacing: 0;
  color: #333;
}
.ios-to-install .ios-ul {
  box-sizing: border-box;
  width: 100%;
  padding-top: 16px;
}
.ios-to-install .ios-li {
  font-size: 13px;
  font-weight: normal;
  line-height: 22px;
  display: flex;
  align-items: flex-start;
  max-width: 360px;
  margin-top: 10px;
  letter-spacing: 0;
  color: #333;
}
.ios-to-install .ios-li .label {
  flex: none;
  width: 30px;
}

/* 二维码 */
.seit-flex-product {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.seit-flex-product .qrcode {
  margin-top: 0;
  width: 180px;
  height: 180px;
}
.seit-flex-product .qrcode img {
  width: 180px;
  height: 180px;
  margin: 0;
  padding: 0;
}
.seit-flex-product .qrcode-text {
  padding-top: 22px;
  font-size: 14px;
  color: #333;
}
.seit-flex-product .qrcode-text-versions {
  padding-top: 8px;
  font-size: 12px;
  color: #999;
}

/* TV 说明 */
.product-screen-tv-desic .title {
  padding-top: 16px;
  font-size: 12px;
  font-weight: normal;
  line-height: 24px;
  text-align: center;
  letter-spacing: 0em;
  color: #666666;
}
.product-screen-tv-desic .desic {
  font-size: 12px;
  font-weight: normal;
  line-height: 20px;
  text-align: center;
  letter-spacing: 0em;
  color: #333333;
  padding-top: 8px;
  max-width: 494px;
  opacity: 0.4;
}

/* 远控 Lite + 提示 */
.footer-lite {
  padding-top: 20px;
  display: flex;
  justify-content: center;
}
.footer-lite-box {
  display: flex;
  align-items: center;
  position: relative;
  padding-bottom: 4px;
}
.footer-lite-btn {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 12px;
  font-weight: bold;
  line-height: 18px;
  letter-spacing: 0em;
  color: #333333;
  text-decoration: none;
}
.footer-lite-btn:hover {
  color: #666;
}
.footer-lite-btn .img {
  width: 16px;
  height: 16px;
  color: #333333;
}
.footer-lite-btn span {
  padding-left: 6px;
}
.footer-lite-box .lite-box {
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s linear, transform 0.2s linear;
  position: absolute;
  top: 20px;
  left: -16px;
  z-index: 1;
  width: 320px;
  border-radius: 10px;
  padding: 16px;
  background: #ffffff;
  box-shadow: 0px 4px 20px 0px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}
.footer-lite-box:hover .lite-box {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lite-box .lite-title {
  font-size: 12px;
  font-weight: bold;
  line-height: 20px;
  letter-spacing: 0em;
  color: #333333;
}
.lite-box .lite-li {
  display: flex;
  align-items: flex-start;
  font-size: 12px;
  font-weight: normal;
  line-height: 20px;
  letter-spacing: 0em;
  color: #666666;
}
.lite-box .lite-li .label {
  width: 20px;
}
.footer-info {
  display: flex;
  justify-content: center;
  font-size: 12px;
  font-weight: normal;
  line-height: 18px;
  text-align: center;
  letter-spacing: 0em;
  color: #999999;
  padding-top: 4px;
}

/* Mac 安装提示 */
.footer-i4-mac .gray-text {
  font-size: 12px;
  color: #999;
  line-height: 18px;
}
.footer-i4-mac .red-text a {
  font-size: 12px;
  color: #e58530;
  text-decoration: none;
}
.gray-text1 {
  text-align: left;
  padding-left: 20px;
}

/* 底部 iTunes 下载区 */
.download-itunes-container {
  background: #fff;
  padding: 40px 0 60px;
}
.download-itunes-container .common-wrapper {
  max-width: 1200px;
  margin: 0 auto;
}
.download-itunes-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.download-itunes-list li {
  flex: 1 1 360px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: 16px;
  background: #f5f7f9;
  padding: 20px 24px;
}
.download-itunes-list .item-lf {
  display: flex;
  align-items: center;
  gap: 12px;
}
.download-itunes-list .item-lf-text {
  display: flex;
  flex-direction: column;
  margin: 0;
  font-size: 13px;
  color: #999;
}
.download-itunes-list .item-lf-text span:last-child {
  font-size: 18px;
  font-weight: bold;
  color: #333;
}
.download-itunes-list .item-rt {
  position: relative;
}
.download-itunes-list .item-rt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  height: 36px;
  border-radius: 8px;
  background: #236ee7;
  color: #fff;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
}
.download-itunes-list .item-popover {
  position: absolute;
  z-index: 20;
  top: 48px;
  right: 0;
  width: 320px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  padding: 12px;
  visibility: hidden;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
}
.download-itunes-list .item-rt:hover .item-popover {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}
.download-itunes-list .item-popover dl {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0;
  padding: 10px 0;
  border-bottom: 1px solid #f2f2f2;
}
.download-itunes-list .item-popover dl:last-child {
  border-bottom: none;
}
.download-itunes-list .item-title {
  margin: 0;
  font-size: 14px;
  color: #333;
  display: flex;
  align-items: center;
  gap: 8px;
}
.download-itunes-list .item-title .tag {
  font-size: 12px;
  color: #236ee7;
}
.download-itunes-list .item-desc {
  margin: 4px 0 0;
  font-size: 12px;
  color: #999;
}
.download-itunes-list .down-link {
  flex: none;
  min-width: 84px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: #236ee7;
  color: #fff !important;
  font-size: 13px;
  text-decoration: none;
}

/* 响应式 */
@media (max-width: 768px) {
  .i4-pc-content {
    padding: 110px 12px 40px;
  }
  .arctile-box {
    padding: 0 16px;
  }
  .arctile-item {
    flex-direction: column;
  }
  .arctile-item .arctile-img,
  .arctile-item .arctile-img .img {
    width: 100%;
    height: auto;
  }
  .arctile-item .arctile-right {
    height: auto;
    padding: 20px 0 0;
  }
  .arctile-item .arctile-btn {
    flex-wrap: wrap;
    gap: 12px;
  }
  .arctile-btn .btn-li,
  .arctile-btn .btn-li-href {
    margin-left: 0;
  }
  .btn-li-visbled {
    left: 0;
    right: 0;
  }
  .btn-li-tips-box {
    width: 100%;
    max-width: 320px;
  }
}