/* =====================================================================
 * 万有资源网 · 全站统一导航样式表（nav.css）
 * ---------------------------------------------------------------------
 * 目的：首页与内页共用同一份导航样式，消除「首页 68px / 内页 112px」高度不一致。
 * 用法：header.php 在所有页面统一 <link> 本文件（放在 common.css 之后，靠后覆盖）。
 * 约定：所有页面共用 header.php 输出同一份导航标记，本文件是唯一的导航样式来源，
 *       首页 index.css 不再重复定义 header / header-nav 相关规则。
 * 结构：① 基础（全站） ② 桌面（≥769px）③ 夜间模式 ④ 动效降级
 * ===================================================================== */

/* ---------- ① 基础：全站生效 ---------- */
:root {
    --nav-w: 1200px;
    --nav-h: 68px;
    /* 主行高度：logo + 搜索 */
    --bar-h: 52px;
    /* 导航行高度 */
    --nav-line: #E9EEF5;
    --nav-ink: #33415C;
    --nav-ink-hi: #111827;
    --nav-brand: #2684FF;
    --nav-brand-d: #1B6FE0;
    --nav-sub: #667085;
    --nav-weak: #98A2B3;
    --nav-soft: #F2F6FC;
}

/* 顶栏（关键词串 + 空 toplink）：参考效果图无此条，全站统一隐藏，避免首页/内页不一致 */
.header-top {
    display: none !important;
}

/* ---------- ② 桌面端统一布局（≥769px） ---------- */
@media screen and (min-width:769px) {

    /* 主行：左边 logo、右边搜索 */
    .header-important {
        background: #fff;
        border-bottom: 1px solid var(--nav-line);
    }

    .header-important .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        box-sizing: border-box;
        max-width: var(--nav-w);
        height: var(--nav-h);
        padding: 0 24px;
    }

    .header-important .logo {
        position: relative;
        display: flex;
        flex: 0 0 auto;
        align-items: center;
        float: none;
        height: auto;
        line-height: 1;
        overflow: hidden;
    }

    /* 去掉旧版 hover 的缩放+旋转（在紧凑头部里会抖动） */
    .header-important .logo:hover {
        transform: none;
        filter: brightness(1.06);
    }

    .header-important .logo img {
        width: auto;
        max-width: 230px;
        max-height: 34px;
        margin-top: 0;
    }

    /* 旧版 logo 右侧的装饰长条图（jpzy.jpg）在紧凑头部放不下，统一不显示 */
    .header-important .logo-right-decation {
        display: none !important;
    }

    /* 搜索：浅灰底胶囊，聚焦转白+蓝边，全站一致 */
    .header-important .search {
        position: relative;
        flex: 0 0 300px;
        float: none;
        width: 300px;
        margin: 0;
        z-index: 120;
    }

    .header-important .search form {
        display: flex;
        align-items: center;
        height: 40px;
        padding: 0 4px 0 14px;
        border: 1px solid transparent;
        border-radius: 10px;
        background: var(--nav-soft);
        transition: background .18s ease, border-color .18s ease;
    }

    .header-important .search form:focus-within {
        background: #fff;
        border-color: #C7DDF8;
    }

    .header-important .search input[type=text] {
        flex: 1 1 auto;
        width: auto;
        height: 38px;
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
        color: var(--nav-ink-hi);
        font-size: 14px;
        line-height: 38px;
    }

    .header-important .search input[type=text]:focus {
        border: 0;
        box-shadow: none;
        background: transparent;
    }

    .header-important .search input[type=text]::placeholder {
        color: var(--nav-weak);
        font-size: 14px;
    }

    /* 栏目下拉：窄屏隐藏（保留后台 typeid 参数提交，URL 仍可用 ?typeid=n） */
    .header-important .search .layui-form-select,
    .header-important .search select {
        display: none !important;
    }

    .header-important .search button.submit {
        position: static;
        display: flex;
        flex: 0 0 34px;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 32px;
        padding: 0;
        border: 0;
        border-radius: 8px;
        background: transparent;
        color: var(--nav-sub);
        font-size: 17px;
        cursor: pointer;
        transition: color .18s ease, background .18s ease;
    }

    .header-important .search button.submit:hover {
        background: #E7F0FE;
        color: var(--nav-brand);
        transform: none;
        box-shadow: none;
    }

    /* 导航行 */
    .header-nav {
        background: #fff;
        border-bottom: 1px solid var(--nav-line);
        box-shadow: none;
        z-index: 110;
    }

    .header-nav-main {
        max-width: var(--nav-w);
        height: var(--bar-h);
        display: flex;
        align-items: center;
        margin: 0 auto;
        padding: 0 24px;
        box-sizing: border-box;
    }

    /* 菜单项：整行左对齐 + 恢复原版 8 等分宽间距（容器 1200 → 每格 144px）
       规范：用户 2026-09-19 反馈「导航太窄、要原来的宽样式、左侧对齐不要居中」 */
    .header-nav .layui-nav {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        flex-wrap: nowrap;
        width: 100%;
        padding: 0 !important;
        border-top: 0;
        background: transparent;
    }

    .header-nav .layui-nav .layui-nav-item {
        position: relative;
        flex: 0 0 12.5%;
        width: 12.5% !important;
        max-width: 12.5%;
        line-height: var(--bar-h);
        text-align: left;
    }

    .header-nav .layui-nav .layui-nav-item>a {
        position: relative;
        display: inline-block;
        height: var(--bar-h);
        padding: 0 15px;
        color: var(--nav-ink) !important;
        font-size: 15px !important;
        font-weight: 400;
        line-height: var(--bar-h) !important;
        white-space: nowrap;
        transition: color .18s ease;
    }

    .header-nav .layui-nav .layui-nav-item>a:hover,
    .header-nav .layui-nav .layui-this>a {
        color: var(--nav-brand) !important;
        font-weight: 500;
    }

    /* 当前栏目标识：下划线贴合文字（与效果图一致）；关掉 layui 的整格滑动块 */
    .header-nav .layui-nav-bar,
    .header-nav .layui-nav .layui-nav-item.layui-this:after {
        display: none !important;
    }

    .header-nav .layui-nav .layui-nav-item.layui-this>a:after {
        content: '';
        position: absolute;
        left: 15px;
        right: 15px;
        bottom: 0;
        height: 2px;
        border-radius: 2px;
        background: var(--nav-brand);
    }

    /* 二级下拉 */
    .header-nav .layui-nav-child {
        top: var(--bar-h);
        padding: 6px 0;
        border: 1px solid var(--nav-line);
        border-radius: 10px;
        background: #fff;
        box-shadow: 0 12px 30px rgba(31, 75, 153, .10);
        overflow: hidden;
    }

    .header-nav .layui-nav-child dd a {
        padding: 0 18px !important;
        color: var(--nav-ink) !important;
        font-size: 13.5px !important;
        line-height: 34px !important;
        transition: background .16s ease, color .16s ease;
    }

    .header-nav .layui-nav-child dd a:hover {
        background: #F4F8FE;
        color: var(--nav-brand) !important;
    }

    /* 空菜单项（模板可能多输出一个空 li）不占位 */
    .header-nav .layui-nav .layui-nav-item:empty {
        display: none !important;
    }
}

/* ---------- ② b 移动端（≤768px）：同一套视觉，仅压缩尺寸 ---------- */
@media screen and (max-width:768px) {

    .header-important {
        background: #fff;
        border-bottom: 1px solid var(--nav-line);
    }

    .header-important .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        box-sizing: border-box;
        max-width: var(--nav-w);
        height: 60px;
        padding: 0 12px;
    }

    .header-important .logo {
        display: flex;
        flex: 0 0 auto;
        align-items: center;
        float: none;
        height: auto;
        line-height: 1;
    }

    .header-important .logo img {
        width: auto;
        max-width: 150px;
        max-height: 32px;
        margin-top: 0;
    }

    .header-important .logo-right-decation {
        display: none !important;
    }

    .header-important .search {
        flex: 1 1 auto;
        float: none;
        width: auto;
        min-width: 0;
        margin: 0;
    }

    .header-important .search form {
        display: flex;
        align-items: center;
        height: 38px;
        padding: 0 4px 0 11px;
        border: 1px solid transparent;
        border-radius: 10px;
        background: var(--nav-soft);
    }

    .header-important .search input[type=text] {
        flex: 1 1 auto;
        width: auto;
        height: 36px;
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
        font-size: 13.5px;
        line-height: 36px;
    }

    .header-important .search input[type=text]::placeholder {
        font-size: 13.5px;
    }

    .header-important .search .layui-form-select,
    .header-important .search select {
        display: none !important;
    }

    .header-important .search button.submit {
        position: static;
        display: flex;
        flex: 0 0 30px;
        align-items: center;
        justify-content: center;
        width: 30px;
        height: 30px;
        padding: 0;
        border: 0;
        background: transparent;
        color: var(--nav-sub);
    }

    .header-nav {
        background: #fff;
        border-bottom: 1px solid var(--nav-line);
        box-shadow: none;
    }

    /* 手机端菜单横向滚动，不折行 */
    .header-nav .header-nav-main {
        display: flex;
        align-items: center;
        box-sizing: border-box;
        max-width: 100%;
        height: 46px;
        padding: 0 12px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
    }

    .header-nav .header-nav-main::-webkit-scrollbar {
        display: none;
    }

    .header-nav .layui-nav {
        display: flex;
        flex-wrap: nowrap;
        width: auto;
        padding: 0 !important;
        border-top: 0;
        background: transparent;
    }

    .header-nav .layui-nav .layui-nav-item {
        position: relative;
        width: auto !important;
        line-height: 46px;
    }

    .header-nav .layui-nav .layui-nav-item>a {
        position: relative;
        display: inline-block;
        height: 46px;
        padding: 0 11px;
        color: var(--nav-ink) !important;
        font-size: 14px !important;
        line-height: 46px !important;
        white-space: nowrap;
    }

    .header-nav .layui-nav .layui-nav-item>a:hover,
    .header-nav .layui-nav .layui-this>a {
        color: var(--nav-brand) !important;
    }

    /* 当前栏目标识：与桌面端同一套（贴合文字）；关掉 layui 的整格滑动块 */
    .header-nav .layui-nav-bar,
    .header-nav .layui-nav .layui-this:after,
    .header-nav .layui-this :after {
        display: none !important;
    }

    .header-nav .layui-nav .layui-nav-item.layui-this>a:after {
        content: '';
        position: absolute;
        left: 11px;
        right: 11px;
        bottom: 0;
        height: 2px;
        border-radius: 2px;
        background: var(--nav-brand);
    }

    .header-nav .layui-nav .layui-nav-item:empty {
        display: none !important;
    }
}

/* ---------- ③ 夜间模式（与首页/内页共用同一套配色） ---------- */
body.night .header-important,
body.night .header-nav,
body.night .header-nav .layui-nav {
    background: #1D1F20;
    border-color: #3c3d3d;
}

body.night .header-important .search form {
    background: #2A2F33;
    border-color: transparent;
}

body.night .header-important .search form:focus-within {
    background: #343A3F;
    border-color: #3b82f6;
}

body.night .header-important .search input[type=text] {
    background: transparent;
    border: 0;
    color: #f9fafb;
}

body.night .header-important .search button.submit {
    color: #d1d5db;
}

body.night .header-nav .layui-nav .layui-nav-item>a,
body.night .header-nav .layui-nav .layui-this>a {
    color: #E5E7EB !important;
}

body.night .header-nav .layui-nav .layui-nav-item>a:hover,
body.night .header-nav .layui-nav .layui-this>a {
    color: #6BB0FF !important;
}

body.night .header-nav .layui-nav-child {
    border-color: #3c3d3d;
    background: #1D1F20;
}

body.night .header-nav .layui-nav-child dd a {
    color: #E5E7EB !important;
}

/* ---------- ④ 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {

    .header-important .logo::before {
        animation: none !important;
    }

    .header-important .logo,
    .header-nav .layui-nav .layui-nav-item>a {
        transition: none !important;
    }
}