/* ===== 导航栏容器 ===== */
header {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 105, 60, 0.06),
                0 4px 24px rgba(0, 105, 60, 0.07);
    transition: padding 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.35s ease,
                background 0.35s ease;
}
/* 滚动收缩 */
header.scrolled {
    box-shadow: 0 1px 0 rgba(0, 105, 60, 0.10),
                0 6px 30px rgba(0, 80, 45, 0.13);
    background: rgba(255, 255, 255, 0.98);
}

/* ===== 导航栏内部 ===== */
header .navbar {
    padding: 8px 0;
    transition: padding 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
header.scrolled .navbar {
    padding: 3px 0;
}

/* ===== Logo 过渡 ===== */
header .logo img {
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
header.scrolled .logo img {
    width: 100px !important;
    height: 53px !important;
}

/* ===== 导航链接整体 ===== */
header .navbar-dark .navbar-nav .nav-link {
    color: #3e7042 !important;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 10px 18px !important;
    border-radius: 8px;
    position: relative;
    transition: color 0.25s ease, background 0.25s ease, padding 0.35s ease;
    margin: 0 1px;
}
header.scrolled .navbar-dark .navbar-nav .nav-link {
    padding: 6px 16px !important;
}

/* hover */
header .navbar-dark .navbar-nav .nav-link:hover {
    color: #00A86B !important;
    background: rgba(0, 168, 107, 0.06);
}

/* ===== 当前激活项 ===== */
header .navbar-dark .navbar-nav .active > .nav-link {
    color: #00A86B !important;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(0, 168, 107, 0.10), rgba(0, 200, 131, 0.06));
}

/* ===== hover 下划线动画 ===== */
header .navbar-dark .navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 55%;
    height: 2.5px;
    background: linear-gradient(90deg, #00A86B, #00C853);
    border-radius: 2px;
    transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-origin: center;
}
header .navbar-dark .navbar-nav .nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}
header .navbar-dark .navbar-nav .active > .nav-link::after {
    transform: translateX(-50%) scaleX(1);
    height: 3px;
}
header.scrolled .navbar-dark .navbar-nav .nav-link::after {
    bottom: 2px;
}

/* ===== 导航项间距 ===== */
.main-menu-sec-pd > li {
    padding: 18px 5px;
    transition: padding 0.35s ease;
}
header.scrolled .main-menu-sec-pd > li {
    padding: 12px 5px;
}

/* ===== 下拉菜单面板 ===== */
.megamenu {
    background: linear-gradient(180deg, #F4FAF6 0%, #ECF7EF 100%) !important;
    border-radius: 0 0 14px 14px !important;
    box-shadow: 0 12px 40px rgba(0, 80, 45, 0.13),
                0 2px 0 rgba(0, 168, 107, 0.12);
    border-top: 2px solid #00A86B !important;
    animation: menuSlideDown 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
@keyframes menuSlideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 一级下拉条目 */
.megamenu .main-link-menu {
    color: #2E7D32 !important;
    font-size: 15px;
    font-weight: 500;
    padding: 10px 18px !important;
    border-radius: 7px;
    transition: all 0.25s ease;
    position: relative;
}
.megamenu .main-link-menu:hover {
    color: #00A86B !important;
    background: rgba(0, 168, 107, 0.08) !important;
    text-decoration: none !important;
    transform: translateX(3px);
}
/* 条目指示点 */
.megamenu .main-link-menu::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 5px;
    height: 5px;
    background: #00A86B;
    border-radius: 50%;
    transition: transform 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.megamenu .main-link-menu:hover::before {
    transform: translateY(-50%) scale(1);
}

/* 激活的一级条目 */
.main-menu-sec-pd > li.show {
    background: rgba(0, 168, 107, 0.08);
    border-radius: 8px;
}

/* ===== 第三级下拉面板（sec-six / biopharma-services）v3 轻量化 ===== */
.sec-six {
    background: #F8FCF9 !important;
    border-radius: 0 12px 12px 12px !important;
    box-shadow: 0 8px 32px rgba(0, 80, 40, 0.10),
                0 2px 8px rgba(0, 80, 40, 0.06),
                inset 0 0 0 1px rgba(0, 150, 90, 0.10);
    animation: submenuFadeIn 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    padding: 20px 12px !important;
    border: none !important;
    border-top: none !important;
}
@keyframes submenuFadeIn {
    from { opacity: 0; transform: translateX(-4px) translateY(0); }
    to   { opacity: 1; transform: translateX(0) translateY(0); }
}

/* 覆盖 menu.css 的背景色 */
.sec-six {
    background-color: #F8FCF9 !important;
}

/* 第三级列间距 */
.sec-six .col-sm-6,
.sec-six .col-lg-3 {
    padding: 0 12px !important;
    margin-bottom: 4px;
}

/* 第三级分组 —— 每列一个卡片 */
.sec-six .col-sm-6,
.sec-six .col-lg-3 {
    background: #ffffff;
    border-radius: 10px;
    padding: 0 !important;
    box-shadow: 0 1px 4px rgba(0, 60, 30, 0.04);
    overflow: hidden;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.sec-six .col-sm-6:hover,
.sec-six .col-lg-3:hover {
    box-shadow: 0 4px 16px rgba(0, 100, 50, 0.10);
    transform: translateY(-1px);
}

/* 第三级分组标题 h3 —— 白色底上的绿色顶条 */
.biopharma-services .megamenu h3 {
    background: #ffffff !important;
    margin: 0 !important;
    padding: 12px 16px 10px !important;
    border-bottom: 1px solid #e8f0ea;
    border-radius: 0 !important;
    position: relative;
    transition: padding-left 0.25s ease;
}
/* h3 左侧绿色短线 */
.biopharma-services .megamenu h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    bottom: 14px;
    width: 3px;
    background: linear-gradient(180deg, #00A86B, #00C853);
    border-radius: 0 2px 2px 0;
    transform: scaleY(0);
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.biopharma-services .megamenu h3::after {
    display: none;
}
.biopharma-services .megamenu h3:hover {
    background: #A5D6A7 !important;
    padding-left: 22px !important;
}
.biopharma-services .megamenu h3:hover::before {
    transform: scaleY(0.7);
}
.sec-six h3 a {
    font-weight: 600;
    font-size: 13.5px;
    letter-spacing: 0.5px;
    color: #2E7D32 !important;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}
/* h3 前的小圆点 */
.sec-six h3 a::before {
    content: '';
    width: 6px;
    height: 6px;
    background: #00A86B;
    border-radius: 50%;
    flex-shrink: 0;
    transition: transform 0.25s ease, background 0.25s ease;
}
.biopharma-services .megamenu h3:hover a {
    color: #00A86B !important;
}
.biopharma-services .megamenu h3:hover a::before {
    transform: scale(1.4);
    background: #00C853;
}

/* 第三级列表容器 ul */
.biopharma-services .megamenu ul {
    background: #ffffff !important;
    margin: 0 !important;
    padding: 6px 0 !important;
    border-radius: 0 !important;
}

/* 第三级列表项 */
.sec-six ul.main-menu-sec {
    margin: 0;
    padding: 0;
    list-style: none;
}
.sec-six ul.main-menu-sec > li {
    padding: 0;
    transition: none;
}
.sec-six ul.main-menu-sec > li a {
    display: block;
    padding: 9px 16px;
    border-radius: 0;
    color: #759977 !important;
    font-size: 13px;
    font-weight: 400;
    text-decoration: none !important;
    transition: all 0.22s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    border-left: 3px solid transparent;
}
/* 左侧绿色指示条 */
.sec-six ul.main-menu-sec > li a::before {
    content: '';
    position: absolute;
    left: -3px;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: #00A86B;
    border-radius: 0 2px 2px 0;
    transform: scaleY(0);
    transition: transform 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 1;
}
/* 右侧小箭头 */
.sec-six ul.main-menu-sec > li a::after {
    content: '→';
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%) translateX(-4px);
    font-size: 14px;
    color: #00A86B;
    opacity: 0;
    font-weight: 600;
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
/* hover 效果 —— 大幅加强 */
.sec-six ul.main-menu-sec > li a:hover {
    background: #A5D6A7 !important;
    padding-left: 22px;
    color: #1B5E20 !important;
    font-weight: 600 !important;
    font-size: 13px !important;
    text-decoration: none !important;
    border-left-color: #00A86B;
}
.sec-six ul.main-menu-sec > li a:hover::before {
    transform: scaleY(1);
}
.sec-six ul.main-menu-sec > li a:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

/* 覆盖 menu.css 中的黄色/白色 hover */
.menu-sub-sec:hover > .sec-six ul li a:hover {
    color: #1B5E20 !important;
    background: #A5D6A7 !important;
    text-decoration: none !important;
    font-size: 13px !important;
    font-weight: 600 !important;
}

/* 第三级列分隔（卡片间自然间隙代替） */
.sec-six .row.px-3 {
    gap: 10px;
}
/* 小屏调整 */
@media screen and (max-width: 767px) {
    .sec-six .col-sm-6,
    .sec-six .col-lg-3 {
        margin-bottom: 8px;
    }
}

/* ===== 小下拉（生命知源/联系我们） ===== */
.li_item_gynh > .megamenu {
    border-radius: 10px !important;
    padding: 12px 8px !important;
    min-width: 140px;
    box-shadow: 0 8px 28px rgba(0, 80, 45, 0.16);
}
.li_item_gynh > .megamenu a.main-link-menu {
    padding: 9px 16px !important;
}
.li_item_gynh div.menu-sub-sec a.dropdown-item:hover {
    color: #00A86B !important;
    background: rgba(0, 168, 107, 0.07) !important;
    border-radius: 6px;
}

/* 箭头图标的绿色滤镜 */
.menu-sub-sec:hover::before {
    filter: brightness(0) saturate(100%) invert(45%) sepia(98%) saturate(800%) hue-rotate(105deg);
}

/* ===== 桌面端 1025+ ===== */
@media screen and (min-width: 1025px) {
    header .navbar-dark .navbar-nav .nav-link {
        font-size: 16px;
        padding: 10px 20px !important;
    }
}

/* ===== 平板 768-1024 ===== */
@media screen and (min-width: 768px) and (max-width: 1024px) {
    header .navbar-dark .navbar-nav .nav-link {
        font-size: 13px;
        padding: 6px 8px !important;
    }
    header.scrolled .navbar-dark .navbar-nav .nav-link {
        padding: 4px 6px !important;
    }
    .main-menu-sec-pd > li {
        padding: 14px 2px;
    }
    header.scrolled .main-menu-sec-pd > li {
        padding: 8px 2px;
    }
}

/* ===== 移动端汉堡菜单 ===== */
@media screen and (max-width: 767px) {
    .navbar-dark .navbar-toggler-icon {
        background-image: url(../images/menu-imge.png);
        opacity: 0.85;
        transition: opacity 0.3s, transform 0.3s ease;
    }
    .navbar-toggler:hover .navbar-toggler-icon {
        opacity: 1;
        transform: rotate(90deg);
    }
    /* 移动端侧滑菜单优化 */
    #Wapnav li .t {
        transition: color 0.25s ease, padding-left 0.25s ease;
    }
    #Wapnav li .t:hover {
        color: #00A86B !important;
        padding-left: 8px;
    }
    #Wapnav li a.t {
        display: block;
        padding: 12px 20px;
        border-radius: 6px;
        transition: all 0.25s ease;
    }
    #Wapnav li a.t:hover {
        background: rgba(0, 168, 107, 0.06);
    }
}