/* ==========================================
   顶部细信息条
   ========================================== */
.topbar {
    background: var(--c-text);
    color: #cbd5e1;
    font-size: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}
.topbar-left { display: flex; gap: 22px; }
.topbar-item { color: #cbd5e1; text-decoration: none; }
.topbar-right { display: flex; align-items: center; flex-shrink: 0; }
.topbar-lang {
    color: #cbd5e1;
    text-decoration: none;
    padding: 2px 10px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 4px;
    transition: all 0.2s;
}
.topbar-lang:hover {
    background: var(--c-primary-light);
    color: var(--c-text);
    border-color: var(--c-primary-light);
}

/* ==========================================
   主导航
   ========================================== */
.site-header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    padding: 12px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1000;
}
.site-header.is-sticky {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 9999;
}
.nav-placeholder { width: 100%; height: 0; }
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.site-logo { height: 44px; width: auto; display: block; }

.main-nav ul {
    list-style: none; margin: 0; padding: 0;
    display: flex; align-items: center; gap: 18px;
}
.main-nav li { position: relative; margin: 0; }
.main-nav a {
    color: #fff; text-decoration: none; font-size: 15px;
    padding: 10px 0; display: block; white-space: nowrap;
    transition: color 0.2s;
}
.main-nav a:hover { color: var(--c-primary-light); }

.main-nav .nav-quote-btn {
    background: var(--c-primary-light); color: var(--c-text);
    padding: 9px 20px; border-radius: 6px; font-weight: 600;
}
.main-nav .nav-quote-btn:hover { background: var(--c-primary-hover); color: #fff; }

/* 桌面端：文字 + 箭头 并排 */
.dropdown-row {
    display: flex;
    align-items: center;
    gap: 4px;
}
.dropdown-toggle {
    display: block;
}
.pc-arrow {
    display: inline-block;
    font-size: 12px;
    transition: transform 0.3s ease;
    cursor: pointer;
    user-select: none;
}

.mobile-menu-toggle { display: none; }
.mobile-menu-close { display: none; }
.mobile-nav-header { display: none; }

/* ==========================================
   ★ 电脑端（≥ 1025px）：鼠标悬浮展开，点击文字跳转
   ========================================== */
@media screen and (min-width: 1025px) {

    .dropdown-menu {
        display: none !important;
        position: absolute;
        top: 100%;
        left: 0;
        background: #fff;
        box-shadow: 0 8px 24px rgba(0,0,0,0.15);
        border-radius: 6px;
        min-width: 260px;
        flex-direction: column;
        padding: 8px 0 !important; 
        gap: 0 !important;
        margin: 0 !important;
        z-index: 999;
    }
    
    .dropdown:hover > .dropdown-menu {
        display: flex !important;
    }
    .dropdown:not(:hover) > .dropdown-menu {
        display: none !important;
    }
    .dropdown:hover .pc-arrow {
        transform: rotate(180deg);
    }
    
    /* 【终极暴力：锁死 li 的高度为 40px】 */
    .site-header .main-nav ul li.dropdown ul.dropdown-menu li {
        margin: 0 !important; 
        padding: 0 !important; 
        height: 40px !important;        /* 强行锁死高度 40px */
        min-height: 40px !important;    
        max-height: 40px !important;    
        line-height: 40px !important;   /* 确保文字垂直居中 */
        width: 100%; 
        border: none !important;
        overflow: hidden !important;    
    }
    
    /* 【精准 40px 间距方案】 */
    .site-header .main-nav ul li.dropdown ul.dropdown-menu li a {
        box-sizing: border-box !important;
        font-size: 14px !important;    /* 字体保持 14px */
        height: 40px !important;       /* 链接总高度锁死 40px */
        line-height: 40px !important;  /* 锁死文字垂直居中 */
        padding: 0 20px !important;    /* 取消上下内边距，只保留左右 20px */
        margin: 0 !important;
        display: block !important;
        color: #333 !important;
        white-space: nowrap;
    }
    
    .site-header .main-nav ul li.dropdown ul.dropdown-menu li a:hover {
        background: #f4f6f9 !important;
        color: #2a5298 !important;
    }
}

/* ==========================================
   ★ 平板 + 手机端（≤ 1024px）：三条杠侧边栏
   ========================================== */
@media screen and (max-width: 1024px) {

    .topbar-inner { padding: 6px 15px; font-size: 11px; }
    .topbar-left { gap: 14px; }
    .topbar-left .topbar-item:last-child { display: none; }

    .nav-container {
        position: relative !important;
        display: flex !important;
        align-items: center !important;
        padding: 0 15px !important;
        min-height: 60px;
    }
    .logo { width: 100% !important; padding-right: 50px !important; }
    .site-logo { height: 32px !important; width: auto !important; }

    /* 三条杠按钮 */
    .mobile-menu-toggle {
        display: block !important;
        position: absolute !important;
        right: 15px !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
        background: none !important;
        border: none !important;
        cursor: pointer !important;
        padding: 5px !important;
        z-index: 1101;
    }
    .mobile-menu-toggle span {
        display: block !important;
        width: 25px !important; height: 2px !important;
        background-color: #fff !important;
        margin: 5px 0 !important;
        transition: 0.3s !important;
        border-radius: 1px !important;
    }

    /* 侧边栏 */
    .main-nav {
        position: fixed !important;
        top: 0 !important; right: -300px !important;
        width: 300px !important; height: 100vh !important;
        background: #fff !important;
        box-shadow: -5px 0 25px rgba(0,0,0,0.15) !important;
        transition: right 0.35s ease-in-out !important;
        z-index: 1200 !important; overflow-y: auto !important;
        display: flex !important; flex-direction: column !important;
        margin: 0 !important; padding: 0 !important;
    }
    .main-nav.active { right: 0 !important; }

    .mobile-nav-header {
        display: flex !important;
        justify-content: flex-end !important;
        padding: 15px 20px !important;
        border-bottom: 1px solid #f1f1f1 !important;
        background: #fff !important;
    }
    .mobile-menu-close {
        display: block !important;
        background: none !important; border: none !important;
        font-size: 24px !important; color: #333 !important; cursor: pointer !important;
    }

    .main-nav ul {
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
        list-style: none !important;
    }
    .main-nav > ul > li {
        width: 100% !important;
        margin: 0 !important;
        border-bottom: 1px solid #f1f1f1 !important;
        position: relative;
    }

    /* 强制清空移动端下拉菜单 li 的多余高度 */
    .main-nav .dropdown-menu li {
        margin: 0 !important;
        padding: 0 !important;
        height: auto !important;
        min-height: 0 !important;
        border-bottom: none !important; 
    }

    /* 文字 + 箭头 一行 */
    .dropdown-row {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        width: 100% !important;
        background: #fff !important;
    }

    /* 主菜单文字：只占左侧，点击跳转 */
    .main-nav .dropdown-toggle {
        display: block !important;
        flex: 1 !important;
        padding: 16px 20px !important;
        font-size: 16px !important;
        color: #333 !important;
        text-decoration: none !important;
        background: #fff !important;
    }

    /* 普通无子菜单的链接 */
    .main-nav > ul > li > a {
        display: block !important;
        padding: 16px 20px !important;
        font-size: 16px !important;
        color: #333 !important;
        text-decoration: none !important;
        background: #fff !important;
    }
    .main-nav .nav-quote-btn {
        background: var(--c-primary-light) !important;
        color: var(--c-text) !important;
        text-align: center !important;
        border-radius: 0 !important;
        font-weight: 600 !important;
    }

    /* 移动端/平板：子菜单默认隐藏 */
    .main-nav .dropdown-menu {
        display: none !important;
        position: static !important;
        box-shadow: none !important;
        background: #f9fafb !important;
        flex-direction: column !important;
        padding: 0 !important;
        gap: 0 !important;
        border-radius: 0 !important;
        width: 100% !important;
        border-top: 1px solid #e5e7eb !important;
    }
    .main-nav .dropdown.open > .dropdown-menu {
        display: flex !important;
    }

    /* 箭头：独立可点击区域 */
    .dropdown-row .pc-arrow {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        font-size: 20px !important;
        color: #999 !important;
        transition: transform 0.3s ease !important;
        padding: 16px 20px !important;
        cursor: pointer !important;
        user-select: none !important;
        background: #fff !important;
        line-height: 1 !important;
    }
    .main-nav .dropdown.open .pc-arrow {
        transform: rotate(90deg);
        color: var(--c-primary) !important;
    }

    /* 移动端保持原样，因为需要手指点击，不能太窄 */
    .main-nav .dropdown-menu a {
        padding: 12px 20px 12px 35px !important; 
        font-size: 15px !important; 
        line-height: 1.5 !important;
        margin: 0 !important;
        min-height: 0 !important;
        color: #666 !important;
        background: #f9fafb !important;
        border-bottom: 1px solid #f1f5f9 !important;
    }
}

/* 让 FontAwesome 图标和文字完美对齐 */
.topbar-item i {
    font-size: 14px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
    position: relative;
    top: -1px;
}
.topbar-item {
    display: inline-flex;
    align-items: center;
}