/* ============================================================
   全站公共样式（site-common.css）
   统一设计语言：浅色纸面 + 墨色 + 单一青色实色强调（无渐变）
   所有页面（首页/资产/档案/BI/文章）共用：
   - CSS 变量 / 顶部信息栏 / 主导航（含滚动收缩）/ 完整备案页脚
   - 使用方式：各页 <link> 引入本文件，导航用 site-nav.jsp，页脚用 site-footer.jsp
   ============================================================ */

/* ============ 全站设计变量 ============ */
:root {
    --bg: #FAF9F6;              /* 暖白纸面底色 */
    --bg-soft: #F3F1EC;         /* 次级底色（区块交替） */
    --ink: #16181D;             /* 墨色主文字 */
    --ink-soft: #3D4149;        /* 次级文字 */
    --muted: #8A8F98;           /* 弱化文字 */
    --line: #E4E1DA;            /* 细线 */
    --accent: #0E7490;          /* 单一强调色：深青（实色，无渐变） */
    --accent-ink: #0B5C73;      /* 强调色深阶（hover 用） */
    --serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
    --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ============ 基础重置（对齐首页） ============ */
html { scroll-behavior: smooth; }
body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: #fff; }

/* ============ 顶部信息栏（墨色底） ============ */
.site-topbar {
    background: var(--ink);
    color: rgba(250,249,246,0.72);
    font-size: 12.5px;
    position: relative;
    z-index: 120;
}
.site-topbar-inner {
    max-width: 1240px; margin: 0 auto;
    padding: 8px 32px;
    display: flex; justify-content: space-between; align-items: center;
}
.site-topbar-right { display: flex; gap: 22px; align-items: center; }
.site-topbar-right i { color: rgba(250,249,246,0.5); margin-right: 6px; font-size: 11px; }
.site-topbar-right a { color: rgba(250,249,246,0.85); text-decoration: none; transition: color .2s; }
.site-topbar-right a:hover { color: #fff; }

/* ============ 主导航：滚动收缩 ============ */
.site-navbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(250,249,246,0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color .35s, box-shadow .35s, background .35s;
}
/* 滚动后：细线 + 轻投影 + 导航收紧 */
.site-navbar.scrolled {
    border-bottom-color: var(--line);
    box-shadow: 0 1px 0 rgba(22,24,29,0.02), 0 12px 32px -18px rgba(22,24,29,0.12);
}
.site-navbar-inner {
    max-width: 1240px; margin: 0 auto;
    padding: 22px 32px;
    display: flex; justify-content: space-between; align-items: center;
    transition: padding .35s;
}
.site-navbar.scrolled .site-navbar-inner { padding: 12px 32px; }
.site-brand {
    display: flex; align-items: center; gap: 12px;
    text-decoration: none; color: var(--ink);
}
.site-brand img { height: 34px; transition: height .35s; display: block; }
.site-navbar.scrolled .site-brand img { height: 28px; }
.site-brand span {
    font-family: var(--serif);
    font-size: 21px; font-weight: 700; letter-spacing: 2px;
}
.site-brand small {
    font-size: 11px; color: var(--muted); letter-spacing: 1px;
    border-left: 1px solid var(--line); padding-left: 12px;
}
.site-nav-links { display: flex; gap: 34px; list-style: none; margin: 0; padding: 0; }
.site-nav-links a {
    color: var(--ink-soft); text-decoration: none;
    font-size: 14.5px; letter-spacing: 0.5px;
    position: relative; padding: 4px 0;
    transition: color .25s;
}
/* 下划线：从左滑入 */
.site-nav-links a::after {
    content: ''; position: absolute;
    left: 0; bottom: 0;
    width: 0; height: 1.5px;
    background: var(--accent);
    transition: width .3s cubic-bezier(.22,1,.36,1);
}
.site-nav-links a:hover { color: var(--ink); }
.site-nav-links a:hover::after,
.site-nav-links a.active::after { width: 100%; }
.site-nav-links a.active { color: var(--accent); }
/* 导航按钮：各页 CTA（表单弹窗/锚点滚动）由各页自己写 onclick */
.site-nav-cta {
    background: var(--ink); color: var(--bg);
    border: none; cursor: pointer;
    font-family: var(--sans);
    padding: 10px 24px; border-radius: 2px;
    font-size: 13.5px; letter-spacing: 1px;
    transition: background .25s, transform .25s;
}
.site-nav-cta:hover { background: var(--accent); transform: translateY(-1px); }

/* ============ 完整备案页脚 ============ */
.site-footer {
    background: var(--ink);
    padding: 56px 32px 36px;
    color: rgba(250,249,246,0.45);
    font-size: 12.5px; letter-spacing: 1px;
    text-align: left;
    position: relative;
    z-index: 1;
}
.footer-top {
    max-width: 1240px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: flex-start;
    flex-wrap: wrap; gap: 24px;
}
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-brand img { height: 34px; display: block; }
.fb-name {
    font-family: var(--serif);
    font-size: 19px; font-weight: 700; color: var(--bg);
    letter-spacing: 2px;
}
.fb-slogan {
    margin-top: 4px;
    font-size: 12px; color: rgba(250,249,246,0.5);
    letter-spacing: 1.5px;
}
.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; padding-top: 6px; }
.footer-nav a {
    color: rgba(250,249,246,0.6); text-decoration: none;
    font-size: 13px; letter-spacing: 1px;
    transition: color .2s;
}
.footer-nav a:hover { color: var(--bg); }
.footer-line {
    max-width: 1240px; margin: 26px auto;
    height: 1px;
    background: rgba(250,249,246,0.12);
}
.footer-info {
    max-width: 1240px; margin: 0 auto;
    line-height: 2.1;
    font-size: 12.5px;
}
.footer-info p { margin: 0; }
.footer-icp a {
    color: rgba(250,249,246,0.55); text-decoration: none;
    transition: color .2s;
}
.footer-icp a:hover { color: var(--bg); }
.footer-icp .sep { margin: 0 10px; color: rgba(250,249,246,0.25); }
.footer-icp i { font-size: 11px; margin-right: 5px; }
.footer-copy { color: rgba(250,249,246,0.35); }

/* ============ 右侧组合（CTA + 手机端汉堡按钮） ============ */
.site-nav-actions { display: flex; align-items: center; gap: 14px; }

/* 汉堡按钮：仅手机端显示 */
.site-hamburger {
    display: none;
    flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer;
    padding: 6px 4px;
}
.site-hamburger span {
    display: block;
    width: 22px; height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}
/* 展开态：三线变 X */
.site-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-hamburger.open span:nth-child(2) { opacity: 0; }
.site-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 手机端抽屉菜单 ============ */
.site-mobile-menu {
    display: none;
    flex-direction: column;
    border-top: 1px solid var(--line);
    background: var(--bg);
    padding: 8px 24px 16px;
}
.site-mobile-menu a {
    color: var(--ink-soft); text-decoration: none;
    font-size: 15px; letter-spacing: 1px;
    padding: 13px 4px;
    border-bottom: 1px solid var(--line);
    transition: color .2s, padding-left .25s;
}
.site-mobile-menu a:last-child { border-bottom: none; }
.site-mobile-menu a.active { color: var(--accent); }
.site-mobile-menu a:hover { color: var(--ink); padding-left: 10px; }
.site-mobile-menu .mm-login { color: var(--muted); font-size: 13px; }
.site-mobile-menu.open { display: flex; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
    /* 桌面菜单隐藏，露出汉堡按钮 */
    .site-nav-links { display: none; }
    .site-hamburger { display: flex; }
    .site-navbar-inner { padding: 14px 20px; }
    .site-topbar-inner { padding: 8px 16px; }
    /* 顶栏精简：手机上只留电话 + 登录 */
    .site-topbar-inner > span { display: none; }
    .site-topbar-right > span:nth-child(2) { display: none; }
}
@media (max-width: 700px) {
    .site-brand small { display: none; }
    .site-brand span { font-size: 18px; }
    /* CTA 缩小，与汉堡并排不换行 */
    .site-nav-cta { padding: 8px 16px; font-size: 12.5px; }
    .site-nav-actions { gap: 10px; }
    .footer-top { flex-direction: column; }
    .site-footer { padding: 40px 20px 30px; }
    .footer-info { font-size: 12px; }
}