/**
 * KnowSmart 全局导航样式
 * 
 * 双层导航架构：
 * - 一级导航：官网主导航（全局固定）
 * - 二级导航：商城分类导航（仅商城页面显示）
 * 
 * 三种上下文：
 * - homepage: 透明背景，滚动变白
 * - shop: 白色背景 + 暖色系 + 二级导航
 * - general: 白色背景
 */

/* ============================================
   CSS 变量（与 woocommerce.css 共享）
   ============================================ */
:root {
    --ks-bg: #F8F6F1;
    --ks-bg-white: #FFFFFF;
    --ks-primary: #4A9B7F;
    --ks-primary-dark: #3D8269;
    --ks-primary-light: #E8F5EF;
    --ks-accent: #F5A623;
    --ks-accent-dark: #E09510;
    --ks-accent-light: #FFF8EB;
    --ks-wood: #A0785A;
    --ks-text: #2D3436;
    --ks-text-secondary: #6B7280;
    --ks-text-muted: #9CA3AF;
    --ks-border: #E5E1DB;
    --ks-border-light: #F0EDE8;
    --ks-shadow-sm: 0 2px 8px rgba(74, 155, 127, 0.08);
    --ks-shadow: 0 4px 16px rgba(74, 155, 127, 0.10);
    --ks-radius: 12px;
    --ks-radius-sm: 8px;
    --ks-transition: all 0.25s ease;
    --ks-font-zh: 'Noto Sans SC', sans-serif;
    --ks-font-en: 'Poppins', sans-serif;
}

/* ============================================
   0. 全局导航基础
   ============================================ */
.ks-global-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    transition: var(--ks-transition);
}

/* ---- 首页模式：透明 → 滚动变白 ---- */
.ks-global-header--transparent .ks-global-header__primary {
    background: transparent;
    border-bottom: 1px solid transparent;
}

.ks-global-header--transparent .ks-global-header__logo-text,
.ks-global-header--transparent .ks-global-header__menu-link,
.ks-global-header--transparent .ks-global-header__action-link,
.ks-global-header--transparent .ks-global-header__login-btn {
    color: white;
}

.ks-global-header--transparent .ks-global-header__menu-arrow {
    stroke: white;
}

/* ---- 首页透明模式：右上角辅助元素统一风格 ---- */
.ks-global-header--transparent .ks-global-header__login-btn,
.ks-global-header--transparent .ks-lang-switcher,
.ks-global-header--transparent .ks-site-switcher {
    font-family: var(--ks-font-en), var(--ks-font-zh), sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    padding: 5px 14px;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    line-height: 1.4;
}

.ks-global-header--transparent .ks-global-header__login-btn:hover,
.ks-global-header--transparent .ks-lang-switcher:hover,
.ks-global-header--transparent .ks-site-switcher:hover {
    border-color: rgba(255, 255, 255, 0.6);
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

/* 透明模式下隐藏语言切换器的绿点（与其他元素统一） */
.ks-global-header--transparent .ks-lang-switcher__dot {
    display: none;
}

/* 透明模式下站点切换器间距统一 */
.ks-global-header--transparent .ks-site-switcher {
    gap: 5px;
}
.ks-global-header--transparent .ks-site-switcher svg:first-child {
    display: none;
}

/* 主 CTA 保持实心白底，视觉突出 */
.ks-global-header--transparent .ks-global-header__login-btn {
    border-color: rgba(255, 255, 255, 0.4);
}

.ks-global-header--transparent .ks-global-header__cta-btn {
    background: white;
    color: #2563eb;
}

.ks-global-header--transparent .ks-global-header__hamburger span {
    background: white;
}

/* 滚动后变白 */
.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__primary {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ks-border-light);
    box-shadow: var(--ks-shadow-sm);
}

.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__logo-text,
.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__menu-link,
.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__action-link,
.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__login-btn {
    color: var(--ks-text);
}

.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__menu-arrow {
    stroke: var(--ks-text-secondary);
}

.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__login-btn {
    border-color: var(--ks-border);
}

.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__cta-btn {
    background: #2563eb;
    color: white;
}

.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__hamburger span {
    background: var(--ks-text);
}

/* ---- 商城模式：暖色系白色背景 ---- */
.ks-global-header--shop .ks-global-header__primary {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(229, 225, 219, 0.6);
    box-shadow: 0 1px 12px rgba(160, 120, 90, 0.06);
}

/* ---- 通用模式：白色背景 ---- */
.ks-global-header:not(.ks-global-header--transparent):not(.ks-global-header--shop) .ks-global-header__primary {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ks-border-light);
    box-shadow: var(--ks-shadow-sm);
}

/* ============================================
   1. 一级导航：官网主导航
   ============================================ */
.ks-global-header__primary {
    transition: var(--ks-transition);
}

.ks-global-header__inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

/* ---- Logo ---- */
.ks-global-header__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--ks-text);
    flex-shrink: 0;
}

.ks-global-header__logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--ks-primary) 0%, #5DB899 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Logo 文字区域：主标题 + 右下角副标题 */
.ks-global-header__logo-text {
    font-family: var(--ks-font-en);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    position: relative;
}

.ks-global-header--transparent .ks-global-header__logo-sub {
    display: none;
}

.ks-global-header__logo-sub {
    font-size: 0.65rem;
    color: var(--ks-text-muted);
    position: absolute;
    right: -2px;
    bottom: -2px;
    line-height: 1;
    white-space: nowrap;
}

/* ---- 主导航菜单 ---- */
.ks-global-header__nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ks-global-header__menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 4px;
}

.ks-global-header__menu-item {
    position: relative;
}

.ks-global-header__menu-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ks-text);
    text-decoration: none;
    border-radius: var(--ks-radius-sm);
    transition: var(--ks-transition);
    white-space: nowrap;
}

/* 首页透明模式：白色文字 */
.ks-global-header--transparent .ks-global-header__menu-link,
.ks-global-header--transparent .ks-header__menu-link {
    color: rgba(255, 255, 255, 0.85);
}

/* 商城/通用模式：深色文字（覆盖 frontend.css 的白色文字） */
.ks-global-header--shop .ks-global-header__menu-link,
.ks-global-header--shop .ks-header__menu-link,
.ks-global-header:not(.ks-global-header--transparent) .ks-global-header__menu-link,
.ks-global-header:not(.ks-global-header--transparent) .ks-header__menu-link {
    color: var(--ks-text);
}

.ks-global-header__menu-link:hover {
    background: rgba(74, 155, 127, 0.06);
    color: var(--ks-primary);
}

/* 首页透明模式滚动后变深色 */
.ks-global-header--transparent.ks-global-header--scrolled .ks-global-header__menu-link,
.ks-global-header--transparent.ks-global-header--scrolled .ks-header__menu-link {
    color: var(--ks-text);
}

.ks-global-header__menu-link--active {
    color: var(--ks-primary);
}

.ks-global-header__menu-arrow {
    transition: transform 0.2s ease;
}

/* ---- 下拉子菜单 ---- */
.ks-global-header__menu-item--has-children:hover .ks-global-header__menu-arrow {
    transform: rotate(180deg);
}

.ks-global-header__submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--ks-bg-white);
    border: 1px solid var(--ks-border-light);
    border-radius: var(--ks-radius);
    box-shadow: var(--ks-shadow);
    padding: 8px 0;
    list-style: none;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.2s ease;
    z-index: 1001;
}

.ks-global-header__menu-item--has-children:hover .ks-global-header__submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ks-global-header__submenu li {
    margin: 0;
}

.ks-global-header__submenu a {
    display: block;
    padding: 10px 20px;
    font-size: 0.875rem;
    color: var(--ks-text-secondary);
    text-decoration: none;
    transition: var(--ks-transition);
}

.ks-global-header__submenu a:hover {
    background: var(--ks-primary-light);
    color: var(--ks-primary);
}

.ks-global-header__submenu-link--active {
    color: var(--ks-primary) !important;
    font-weight: 600;
}

/* ---- 右侧操作区 ---- */
.ks-global-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.ks-global-header__action-link {
    font-size: 0.85rem;
    color: var(--ks-text-secondary);
    text-decoration: none;
    padding: 6px 10px;
    border-radius: var(--ks-radius-sm);
    transition: var(--ks-transition);
    white-space: nowrap;
}

.ks-global-header__action-link:hover {
    color: var(--ks-primary);
    background: var(--ks-primary-light);
}

.ks-global-header__action-link--admin {
    color: #2563eb;
    font-weight: 500;
}

.ks-global-header__action-link--logout {
    color: var(--ks-text-muted);
    font-size: 0.8rem;
}

.ks-global-header__login-btn {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ks-primary);
    border: 1px solid var(--ks-primary);
    border-radius: var(--ks-radius-sm);
    text-decoration: none;
    transition: var(--ks-transition);
    white-space: nowrap;
}

.ks-global-header__login-btn:hover {
    background: var(--ks-primary);
    color: white;
}

.ks-global-header__cta-btn {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    font-size: 0.85rem;
    font-weight: 600;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: var(--ks-radius-sm);
    text-decoration: none;
    transition: var(--ks-transition);
    white-space: nowrap;
}

.ks-global-header__cta-btn:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* ---- 购物车图标 ---- */
.ks-global-header__cart-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: #FFFFFF;
    background: var(--ks-primary);
    border-radius: var(--ks-radius-sm);
    text-decoration: none;
    transition: var(--ks-transition);
    box-shadow: 0 2px 8px rgba(74, 155, 127, 0.2);
}

.ks-global-header__cart-icon:hover {
    background: var(--ks-primary-dark);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(74, 155, 127, 0.35);
    transform: translateY(-1px);
}

.ks-global-header__cart-icon svg {
    width: 22px;
    height: 22px;
}

.ks-global-header__cart-badge {
    position: absolute;
    top: 4px;
    right: 2px;
    min-width: 18px;
    height: 18px;
    background: var(--ks-accent);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    line-height: 1;
}

/* ---- 汉堡菜单按钮 ---- */
.ks-global-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: 8px;
}

.ks-global-header__hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ks-text);
    border-radius: 2px;
    transition: var(--ks-transition);
}

/* ============================================
   2. 二级导航：商城分类导航
   ============================================ */
.ks-global-header__secondary {
    background: var(--ks-bg);
    border-bottom: 1px solid var(--ks-border-light);
}

.ks-global-header__secondary-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: 46px;
    gap: 16px;
}

/* ---- 商品搜索 ---- */
.ks-global-header__search {
    flex-shrink: 0;
}

.ks-global-header__search .woocommerce-product-search {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ks-global-header__search .search-field {
    width: 200px;
    height: 34px;
    padding: 0 14px;
    border: 1px solid var(--ks-border);
    border-radius: 9999px;
    font-size: 0.8rem;
    background: var(--ks-bg-white);
    color: var(--ks-text);
    transition: var(--ks-transition);
}

.ks-global-header__search .search-field:focus {
    outline: none;
    border-color: var(--ks-primary);
    width: 240px;
    box-shadow: 0 0 0 3px rgba(74, 155, 127, 0.1);
}

.ks-global-header__search .search-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 34px;
    padding: 0 16px;
    background: var(--ks-primary);
    color: white;
    border: none;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--ks-transition);
}

.ks-global-header__search .search-submit:hover {
    background: var(--ks-primary-dark);
}

/* ---- 商城分类链接 ---- */
.ks-global-header__shop-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.ks-global-header__shop-nav::-webkit-scrollbar {
    display: none;
}

.ks-global-header__shop-link {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ks-text-secondary);
    text-decoration: none;
    border-radius: 9999px;
    white-space: nowrap;
    transition: var(--ks-transition);
}

.ks-global-header__shop-link:hover {
    background: var(--ks-primary-light);
    color: var(--ks-primary);
}

.ks-global-header__shop-link--active {
    background: transparent;
    color: var(--ks-primary);
    font-weight: 600;
    position: relative;
}

.ks-global-header__shop-link--active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--ks-primary);
    border-radius: 1px;
}

/* ============================================
   3. 移动端菜单
   ============================================ */
.ks-global-header__mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: var(--ks-bg-white);
    z-index: 2000;
    transition: right 0.3s ease;
    overflow-y: auto;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
}

.ks-global-header__mobile-menu.ks-global-header__mobile-menu--open {
    right: 0;
}

.ks-global-header__mobile-inner {
    padding: 0;
}

.ks-global-header__mobile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--ks-border-light);
}

.ks-global-header__mobile-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ks-text);
}

.ks-global-header__mobile-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--ks-text-muted);
    cursor: pointer;
    border-radius: var(--ks-radius-sm);
    transition: var(--ks-transition);
}

.ks-global-header__mobile-close:hover {
    background: var(--ks-bg);
    color: var(--ks-text);
}

.ks-global-header__mobile-nav {
    padding: 12px 0;
}

.ks-global-header__mobile-nav > a,
.ks-global-header__mobile-group {
    display: block;
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--ks-text);
    text-decoration: none;
    transition: var(--ks-transition);
}

.ks-global-header__mobile-nav > a:hover,
.ks-global-header__mobile-group:hover {
    background: var(--ks-primary-light);
    color: var(--ks-primary);
}

.ks-global-header__mobile-sub {
    padding: 0 0 8px 20px;
    display: none;
}

.ks-global-header__mobile-sub a {
    display: block;
    padding: 10px 20px 10px 16px;
    font-size: 0.85rem;
    color: var(--ks-text-secondary);
    text-decoration: none;
    border-left: 2px solid var(--ks-border-light);
    transition: var(--ks-transition);
}

.ks-global-header__mobile-sub a:hover {
    border-left-color: var(--ks-primary);
    color: var(--ks-primary);
}

.ks-global-header__mobile-auth {
    padding: 16px 20px;
    border-top: 1px solid var(--ks-border-light);
}

.ks-global-header__mobile-auth-btn {
    display: block;
    text-align: center;
    padding: 12px 24px;
    background: var(--ks-primary);
    color: white;
    border-radius: var(--ks-radius);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--ks-transition);
}

.ks-global-header__mobile-auth-btn:hover {
    background: var(--ks-primary-dark);
}

/* ============================================
   4. 遮罩层（移动端菜单打开时）
   ============================================ */
.ks-global-header__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.ks-global-header__overlay.ks-global-header__overlay--visible {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   5. 响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .ks-global-header__nav {
        display: none;
    }

    .ks-global-header__cta-btn {
        display: none;
    }

    .ks-global-header__hamburger {
        display: flex;
    }

    .ks-global-header__secondary-inner {
        height: 44px;
    }

    .ks-global-header__search .search-field {
        width: 140px;
    }

    .ks-global-header__search .search-field:focus {
        width: 180px;
    }
}

@media (max-width: 768px) {
    .ks-global-header__inner {
        height: 60px;
        padding: 0 16px;
    }

    .ks-global-header__secondary-inner {
        padding: 0 16px;
    }

    .ks-global-header__search {
        display: none;
    }

    .ks-global-header__shop-link {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .ks-global-header__logo-text {
        font-size: 1.1rem;
    }

    .ks-global-header__logo-sub {
        font-size: 0.65rem;
    }

    .ks-global-header__action-link--admin,
    .ks-global-header__action-link--logout {
        display: none;
    }
}

@media (max-width: 480px) {
    .ks-global-header__login-btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }

    .ks-global-header__cart-icon {
        width: 36px;
        height: 36px;
    }

    .ks-global-header__signup-btn {
        display: none;
    }
}

/* ---- Sign Up 按钮 ---- */
.ks-global-header__signup-btn {
    font-size: 0.82rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 50px;
    color: var(--ks-primary);
    background: var(--ks-primary-light);
    border: 1.5px solid var(--ks-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    font-family: var(--ks-font-en);
}

.ks-global-header__signup-btn:hover {
    background: var(--ks-primary);
    color: #FFFFFF;
}

/* ============================================
   6. 兼容旧样式（过渡期）
   确保旧的 .ks-header 选择器仍然生效
   ============================================ */

/* 首页的旧导航样式映射到新组件 */
.ks-global-header--transparent .ks-global-header__primary {
    /* 继承首页原有的透明效果 */
}

/* 隐藏旧的 Astra header 在所有页面 */
body .ast-above-header,
body .ast-main-header,
body .ast-below-header,
body .ast-small-footer {
    display: none !important;
}

/* ============================================
   账户下拉菜单
   ============================================ */
.ks-global-header__user-dropdown {
    position: relative;
}

.ks-global-header__user-menu {
    display: none !important;
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 160px;
    background: var(--ks-bg-white);
    border: 1px solid var(--ks-border);
    border-radius: var(--ks-radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    padding: 8px 0;
    z-index: 1000;
    margin-top: 4px;
    flex-direction: column !important;
}

.ks-global-header__user-dropdown:hover .ks-global-header__user-menu,
.ks-global-header__user-dropdown:focus-within .ks-global-header__user-menu {
    display: block !important;
}

.ks-global-header__user-menu a {
    display: block;
    padding: 10px 16px;
    color: var(--ks-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--ks-transition);
    white-space: nowrap;
}

.ks-global-header__user-menu a:hover {
    background: var(--ks-primary-light);
    color: var(--ks-primary);
}

.ks-global-header__user-menu--logout {
    border-top: 1px solid var(--ks-border);
    margin-top: 4px;
    padding-top: 12px !important;
    color: var(--ks-text-muted) !important;
}

.ks-global-header__user-menu--logout:hover {
    color: #E74C3C !important;
    background: #FEF2F2 !important;
}

/* ============================================
   Language Switcher
   ============================================ */
.ks-lang-switcher {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1px solid var(--ks-border);
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--ks-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    background: var(--ks-bg-white);
    z-index: 10;
}
.ks-lang-switcher:hover {
    border-color: var(--ks-primary);
    color: var(--ks-primary);
    background: var(--ks-primary-light);
}
/* 滚动后恢复为白底样式 */
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher {
    background: var(--ks-bg-white);
    border-color: var(--ks-border);
    color: var(--ks-text-secondary);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher:hover {
    border-color: var(--ks-primary);
    color: var(--ks-primary);
    background: var(--ks-primary-light);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher__dot {
    display: block;
    background: var(--ks-primary);
}

.ks-lang-switcher__dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--ks-primary);
}
.ks-lang-switcher__dropdown {
    display: none;
    position: absolute;
    top: calc(100% - 2px);
    right: 0;
    min-width: 160px;
    background: var(--ks-bg-white);
    border: 1px solid var(--ks-border-light);
    border-radius: var(--ks-radius);
    box-shadow: var(--ks-shadow);
    overflow: hidden;
    z-index: 100;
    padding-top: 8px;
    margin-top: 0;
}
/* 消除按钮与下拉之间的间隙，防止鼠标移过时消失 */
.ks-lang-switcher__dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
}
.ks-lang-switcher:hover .ks-lang-switcher__dropdown { display: block; }
.ks-lang-switcher__option {
    display: block;
    padding: 10px 16px;
    font-size: 0.82rem;
    color: var(--ks-text-secondary);
    transition: background 0.15s;
    text-decoration: none;
}
.ks-lang-switcher__option:hover { background: var(--ks-primary-light); color: var(--ks-primary); }
.ks-lang-switcher__option--active { color: var(--ks-primary); font-weight: 600; }

/* ============================================
   Site Switcher
   ============================================ */
.ks-site-switcher {
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    color: var(--ks-text-muted);
    cursor: pointer;
    transition: all 0.2s;
    z-index: 10;
}
.ks-site-switcher:hover { color: var(--ks-text-secondary); background: var(--ks-bg); }

/* 滚动后恢复站点切换器默认样式 */
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher {
    border-color: var(--ks-border);
    color: var(--ks-text-muted);
    background: transparent;
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher:hover {
    color: var(--ks-text-secondary);
    background: var(--ks-bg);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher svg:first-child {
    display: block;
}

.ks-site-switcher__label { white-space: nowrap; }
.ks-site-switcher__dropdown {
    display: none;
    position: absolute;
    top: calc(100% - 2px);
    left: 0;
    min-width: 220px;
    background: var(--ks-bg-white);
    border: 1px solid var(--ks-border-light);
    border-radius: var(--ks-radius);
    box-shadow: var(--ks-shadow);
    overflow: hidden;
    z-index: 100;
    padding-top: 8px;
    margin-top: 0;
}
/* 消除按钮与下拉之间的间隙，防止鼠标移过时消失 */
.ks-site-switcher__dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
}
.ks-site-switcher:hover .ks-site-switcher__dropdown { display: block; }
.ks-site-switcher__dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    font-size: 0.82rem;
    color: var(--ks-text-secondary);
    transition: background 0.15s;
    text-decoration: none;
}
.ks-site-switcher__dropdown a:hover { background: var(--ks-primary-light); color: var(--ks-primary); }
.ks-site-switcher__icon {
    width: 28px; height: 28px; border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; flex-shrink: 0;
}
.ks-site-switcher__info { line-height: 1.3; }
.ks-site-switcher__info small { font-size: 0.68rem; color: var(--ks-text-muted); display: block; }
.ks-site-switcher__option--active .ks-site-switcher__info span { color: var(--ks-primary); font-weight: 600; }

/* ============================================
   首页透明模式：暗色下拉菜单
   ============================================ */
.ks-global-header--transparent .ks-site-switcher__dropdown {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.ks-global-header--transparent .ks-site-switcher__dropdown a {
    color: rgba(255, 255, 255, 0.85);
}
.ks-global-header--transparent .ks-site-switcher__dropdown a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: white;
}
.ks-global-header--transparent .ks-site-switcher__icon {
    background: rgba(255, 255, 255, 0.1) !important;
    color: rgba(255, 255, 255, 0.9) !important;
}
.ks-global-header--transparent .ks-site-switcher__info small {
    color: rgba(255, 255, 255, 0.45);
}
.ks-global-header--transparent .ks-site-switcher__option--active .ks-site-switcher__info span {
    color: #60A5FA;
    font-weight: 600;
}

/* 语言切换器下拉也用暗色 */
.ks-global-header--transparent .ks-lang-switcher__dropdown {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.ks-global-header--transparent .ks-lang-switcher__option {
    color: rgba(255, 255, 255, 0.85);
}
.ks-global-header--transparent .ks-lang-switcher__option:hover {
    background: rgba(255, 255, 255, 0.08);
    color: white;
}
.ks-global-header--transparent .ks-lang-switcher__option--active {
    color: #60A5FA;
    font-weight: 600;
}

/* 滚动后恢复白底下拉 */
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher__dropdown,
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher__dropdown {
    background: var(--ks-bg-white);
    border: 1px solid var(--ks-border-light);
    box-shadow: var(--ks-shadow);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher__dropdown a,
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher__option {
    color: var(--ks-text-secondary);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher__dropdown a:hover,
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher__option:hover {
    background: var(--ks-primary-light);
    color: var(--ks-primary);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher__icon {
    background: var(--ks-bg-white) !important;
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher__info small {
    color: var(--ks-text-muted);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-site-switcher__option--active .ks-site-switcher__info span {
    color: var(--ks-primary);
}
.ks-global-header--transparent.ks-global-header--scrolled .ks-lang-switcher__option--active {
    color: var(--ks-primary);
}