/* ============================================================
   site-common.css  —  全站页头 / 导航 / 页脚 统一样式
   ------------------------------------------------------------
   本文件在所有 HTML 中最后加载，所有属性均带 !important，
   以绝对覆盖各页内联 <style> 中的冲突规则。
   移动端导航：3 列 × 2 行，始终可见。
   ============================================================ */

html {
    overflow-y: scroll !important;
}

/* ---------- clearfix ---------- */
.header-top::after {
    content: "" !important;
    display: table !important;
    clear: both !important;
}

/* ============================================================
   顶部 Logo 区（桌面 + 移动通用基础）
   ============================================================ */
.header-top {
    width: 100% !important;
    padding: 0.5em 0 !important;
    background: #ffffff !important;
    overflow: visible !important;
    display: block !important;
    visibility: visible !important;
}

.header-top .logo {
    padding: 16px 0 !important;
    float: left !important;
    width: auto !important;
    display: block !important;
    visibility: visible !important;
    overflow: visible !important;
}

.header-top .logo h1 {
    margin: 0 !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    flex-wrap: nowrap !important;
    line-height: normal !important;
    font-size: inherit !important;
}

.header-top .logo h1 a {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    flex-wrap: nowrap !important;
    line-height: normal !important;
}

.header-top .logo img {
    display: block !important;
    width: auto !important;
    height: auto !important;
    max-height: 96px !important;
    margin: 0 10px 0 0 !important;
}

/* ============================================================
   导航栏容器（桌面）
   ============================================================ */
.header {
    width: 100% !important;
    background: #8B0000 !important;
    position: relative !important;
    z-index: 1000 !important;
    box-shadow: 0 2px 7px rgba(0, 0, 0, 0.10) !important;
    display: block !important;
    visibility: visible !important;
    overflow: visible !important;
    opacity: 1 !important;
    height: auto !important;
    min-height: 0 !important;
}

/* 滚动固定（桌面端由 JS 添加 .stick） */
.header.stick {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    z-index: 9999 !important;
    box-shadow: 0 2px 7px rgba(0, 0, 0, 0.10) !important;
}

/* sticky 占位元素默认隐藏高度，由 JS 控制 */
#mainMenuBarAnchor {
    display: block !important;
    width: 100% !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

.top-menu {
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
    display: block !important;
}

/* ============================================================
   导航列表（桌面）
   ============================================================ */
.nav1 {
    width: 100% !important;
    height: 62px !important;
    margin: 0 !important;
    padding: 0 !important;
    list-style: none !important;
    display: flex !important;
    align-items: stretch !important;
    justify-content: flex-start !important;
    flex-wrap: nowrap !important;
    visibility: visible !important;
    overflow: visible !important;
    opacity: 1 !important;
}

.nav1 li {
    height: 62px !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #8B0000 !important;
    display: list-item !important;
    visibility: visible !important;
    opacity: 1 !important;
    float: none !important;
}

.nav1 li a {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 62px !important;
    padding: 0 24px !important;
    color: #ffffff !important;
    background: #8B0000 !important;
    font-size: 16px !important;
    font-weight: 400 !important;
    line-height: 1.5 !important;
    white-space: nowrap !important;
    text-decoration: none !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
    top: auto !important;
    left: auto !important;
    transform: none !important;
}

.nav1 li a::before,
.nav1 li a::after {
    display: none !important;
    content: none !important;
}

.nav1 li a:hover,
.nav1 li.active a {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.16) !important;
}

.nav1 li a:active {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.20) !important;
}

/* ============================================================
   页脚（桌面）
   ============================================================ */
.footer {
    width: 100% !important;
    margin-top: 0 !important;
    padding: 0 !important;
    background: #8B0000 !important;
    color: #ffffff !important;
    display: block !important;
    visibility: visible !important;
}

.footer .footer-sec {
    width: 100% !important;
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

.footer .footer-column {
    flex: 1 1 20% !important;
    width: auto !important;
    margin: 0 !important;
    padding: 5px 20px !important;
    text-align: left !important;
}

.footer .footer-column h3,
.footer .footer-column h4 {
    margin: 0 0 5px !important;
    color: #ffffff !important;
    font-size: 18px !important;
    font-weight: 500 !important;
    line-height: 1.5 !important;
}

.footer .footer-column p {
    margin: 0 !important;
    color: #ffffff !important;
    font-size: 14px !important;
    line-height: 1.5 !important;
}

/* ============================================================
   平板 (≤991px)
   ============================================================ */
@media (max-width: 991px) {
    .nav1 li a {
        padding: 0 15px !important;
    }
}

/* ============================================================
   手机端 (≤767px)  —  核心修复区
   ------------------------------------------------------------
   1. 导航栏回归正常文档流（position: relative），
      避免 sticky/fixed 与 overflow-x:hidden 冲突导致消失
   2. 导航 3 列 × 2 行，6 个菜单项正好排满
   3. 所有元素强制 display/visibility/opacity，防止被隐藏
   4. 容器 overflow: visible，防止内容被裁剪
   ============================================================ */
@media (max-width: 767px) {

    /* ---- 防隐藏总开关 ---- */
    .header-top,
    .header-top .logo,
    .header,
    .header.stick,
    .top-menu,
    .nav1,
    .nav1 li,
    .nav1 li a,
    .footer,
    .footer .footer-sec,
    .footer .footer-column {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        overflow: visible !important;
        position: relative !important;
        top: auto !important;
        left: auto !important;
        right: auto !important;
        bottom: auto !important;
        transform: none !important;
        float: none !important;
        clip: auto !important;
        clip-path: none !important;
    }

    /* ---- 顶部 Logo ---- */
    .header-top {
        padding: 0 !important;
    }

    .header-top .logo {
        padding: 10px 0 !important;
        width: 100% !important;
        text-align: center !important;
    }

    .header-top .logo h1,
    .header-top .logo h1 a {
        justify-content: center !important;
        flex-wrap: nowrap !important;
        width: 100% !important;
        gap: 4px !important;
    }

    .header-top .logo img {
        max-height: 58px !important;
        max-width: calc(50% - 4px) !important;
        margin: 0 !important;
        object-fit: contain !important;
        flex: 0 1 auto !important;
    }

    /* ---- 导航容器：回归文档流 ---- */
    .header,
    .header.stick {
        position: relative !important;
        top: auto !important;
        left: auto !important;
        right: auto !important;
        width: 100% !important;
        height: auto !important;
        min-height: 0 !important;
        overflow: visible !important;
        z-index: 1000 !important;
        box-shadow: 0 2px 7px rgba(0, 0, 0, 0.10) !important;
    }

    /* sticky 占位在手机端始终为 0 */
    #mainMenuBarAnchor {
        height: 0 !important;
        display: none !important;
    }

    .header > .container {
        padding-left: 0 !important;
        padding-right: 0 !important;
        width: 100% !important;
        max-width: none !important;
    }

    .top-menu {
        width: 100% !important;
        overflow: visible !important;
    }

    /* ---- 导航列表：3 列 × 2 行 ---- */
    .nav1 {
        width: 100% !important;
        height: auto !important;
        min-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        list-style: none !important;
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: wrap !important;
        justify-content: flex-start !important;
        align-items: stretch !important;
        align-content: stretch !important;
        overflow: visible !important;
        visibility: visible !important;
        opacity: 1 !important;
    }

    .nav1 li {
        flex: 0 0 33.333333% !important;
        width: 33.333333% !important;
        min-width: 0 !important;
        max-width: 33.333333% !important;
        height: auto !important;
        min-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        background: #8B0000 !important;
        text-align: center !important;
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        float: none !important;
        position: relative !important;
        top: auto !important;
        left: auto !important;
        transform: none !important;
    }

    .nav1 li a,
    .nav1 li a:hover,
    .nav1 li a:active,
    .nav1 li.active a {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        width: 100% !important;
        height: auto !important;
        min-height: 44px !important;
        padding: 10px 4px !important;
        margin: 0 !important;
        color: #ffffff !important;
        background: #8B0000 !important;
        font-size: 14px !important;
        font-weight: 400 !important;
        line-height: 1.4 !important;
        white-space: nowrap !important;
        text-align: center !important;
        text-decoration: none !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: relative !important;
        top: auto !important;
        left: auto !important;
        transform: none !important;
        border: none !important;
        box-shadow: none !important;
    }

    .nav1 li a:hover,
    .nav1 li.active a {
        background: rgba(255, 255, 255, 0.16) !important;
    }

    .nav1 li a:active {
        background: rgba(255, 255, 255, 0.20) !important;
    }

    /* ---- 页脚 ---- */
    .footer {
        margin-top: 30px !important;
        overflow: visible !important;
    }

    .footer > .container {
        width: 100% !important;
        max-width: none !important;
        padding-left: 10px !important;
        padding-right: 10px !important;
    }

    .footer .footer-sec {
        display: block !important;
        padding: 15px 0 !important;
    }

    .footer .footer-column {
        display: block !important;
        width: 100% !important;
        flex: none !important;
        padding: 10px 5px !important;
        text-align: center !important;
    }

    .footer .footer-column + .footer-column {
        margin-top: 0 !important;
    }

    .footer .footer-column h3 {
        font-size: 18px !important;
    }

    .footer .footer-column p {
        font-size: 14px !important;
        word-break: break-word !important;
    }
}

/* ============================================================
   小屏手机 (≤480px)  —  导航字略小、行高略紧凑
   ============================================================ */
@media (max-width: 480px) {
    .header-top .logo img {
        max-height: 48px !important;
    }

    .nav1 li a,
    .nav1 li a:hover,
    .nav1 li a:active,
    .nav1 li.active a {
        min-height: 40px !important;
        padding: 8px 2px !important;
        font-size: 13px !important;
    }
}

/* ============================================================
   超小屏手机 (≤380px)
   ============================================================ */
@media (max-width: 380px) {
    .header-top .logo {
        padding: 8px 0 !important;
    }

    .header-top .logo img {
        max-height: 44px !important;
        max-width: calc(50% - 3px) !important;
    }

    .nav1 li a,
    .nav1 li a:hover,
    .nav1 li a:active,
    .nav1 li.active a {
        min-height: 38px !important;
        padding: 7px 1px !important;
        font-size: 12.5px !important;
    }
}
/* （注：内容由AI生成） */