/* ==========================================================
   英文站专属样式（en.rbdtech.com）
   频道头图 / 首页 banner 在英文站改用渐变 + 英文标题，
   避免位图内嵌的中文标题（素材来自中文站，无法分离文字层）
   ========================================================== */

/* ---- 频道头图（替代 /t/webimg/*.jpg 内嵌中文标题的位图）----
   注意：.chanpin-head .product_center 固定高 600px，其 img 是
   position:absolute 居中定位；这里必须同样用 absolute，否则会多出 200px 空白。 */
.channel-head-en {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 600px;
    background: linear-gradient(120deg, #16324f 0%, #24527f 45%, #35719f 78%, #4a86b4 100%);
    overflow: hidden;
}
.channel-head-en::after {
    content: "";
    position: absolute;
    right: -120px;
    top: -160px;
    width: 620px;
    height: 620px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.13) 0%, rgba(255, 255, 255, 0) 70%);
}
.channel-head-en .en-title {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding-top: 150px;
}
.channel-head-en .en-title h2 {
    font-size: 54px;
    font-weight: normal;
    letter-spacing: 1px;
    line-height: 1.2;
    margin: 0;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.18);
}
.channel-head-en .en-title p {
    font-size: 22px;
    font-weight: normal;
    margin: 20px 0 0;
    opacity: 0.86;
    letter-spacing: 0.4px;
}

/* ---- 首页 banner 轮播位（英文站用静态渐变 + 欢迎语）---- */
.banner-en {
    position: relative;
    min-width: 1180px;
    height: 440px;
    background: linear-gradient(120deg, #10283f 0%, #1d4468 40%, #2c628c 72%, #3d7ba6 100%);
    overflow: hidden;
}
.banner-en::before {
    content: "";
    position: absolute;
    left: -160px;
    bottom: -260px;
    width: 760px;
    height: 760px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 68%);
}
.banner-en::after {
    content: "";
    position: absolute;
    right: -100px;
    top: -140px;
    width: 560px;
    height: 560px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0) 70%);
}
.banner-en .en-welcome {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding-top: 150px;
}
.banner-en .en-welcome h2 {
    font-size: 58px;
    font-weight: normal;
    letter-spacing: 1px;
    margin: 0;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
}
.banner-en .en-welcome p {
    font-size: 23px;
    font-weight: normal;
    margin: 22px 0 0;
    opacity: 0.88;
}
.banner-en .en-welcome .en-slogan {
    display: inline-block;
    margin-top: 34px;
    padding: 11px 34px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 2px;
    font-size: 17px;
    letter-spacing: 1px;
}