/* =========================================================
   引路蜂 · 顶部导航 + 页脚（全站共用）
   从 demo.css 拆出，须在 demo.css 之后加载
   依赖 demo.css 的 :root 变量（颜色 / 圆角 / --header-h_doccenter）
   ① 顶部导航：深色头 + 满屏下拉超级菜单
   ② 页脚：深色 ft_* 五列（含旧版 .footer_doccenter）
   ========================================================= */

/* =========================================================
   一、顶部导航
   ========================================================= */
.topbar_doccenter {
  position: relative;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line_doccenter);
}
.topbar-inner_doccenter {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h_doccenter);
}
.brand_doccenter { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo_doccenter {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--primary_doccenter), var(--primary-2_doccenter));
  color: #fff; font-weight: 800; font-size: 13px; letter-spacing: .5px;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
}
.brand-text_doccenter { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text_doccenter b { font-size: 16px; color: var(--ink_doccenter); font-weight: 700; }
.brand-text_doccenter span { font-size: 11.5px; color: var(--muted_doccenter); letter-spacing: 1.5px; }
.topnav_doccenter { display: flex; align-items: center; gap: 4px; margin-left: 8px; align-self: stretch; }
.topnav_doccenter > a, .topnav_doccenter .nav-link_doccenter {
  padding: 8px 14px;
  border-radius: 9px;
  font-size: 14.5px;
  color: var(--text_doccenter);
  font-weight: 500;
  transition: background .18s, color .18s;
  white-space: nowrap;
}
.topnav_doccenter > a:hover, .topnav_doccenter .nav-link_doccenter:hover { background: var(--primary-soft_doccenter); color: var(--primary_doccenter); }
.topnav_doccenter > a.active_doccenter, .topnav_doccenter .nav-link_doccenter.active_doccenter { background: var(--primary-soft_doccenter); color: var(--primary_doccenter); font-weight: 600; }
.topbar-right_doccenter { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.search_doccenter {
  display: flex; align-items: center; gap: 8px;
  width: 300px; height: 42px;
  padding: 0 6px 0 14px;
  background: var(--bg_doccenter);
  border: 1px solid var(--line_doccenter);
  border-radius: 999px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.search_doccenter:focus-within {
  background: #fff;
  border-color: var(--primary_doccenter);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}
.search_doccenter svg { width: 17px; height: 17px; color: var(--muted_doccenter); flex-shrink: 0; }
.search_doccenter input {
  flex: 1; min-width: 0;
  border: 0; outline: 0; background: transparent;
  font-size: 14px; color: var(--ink_doccenter);
}
.search_doccenter input::placeholder { color: #9aa7b8; }
.search_doccenter kbd {
  font-family: inherit;
  font-size: 11px; color: var(--muted_doccenter);
  background: #fff;
  border: 1px solid var(--line_doccenter);
  border-radius: 6px;
  padding: 2px 7px;
  white-space: nowrap;
}
.menu-btn_doccenter {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line_doccenter);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  color: var(--text_doccenter);
  place-items: center;
}
@media (max-width: 1200px) {
  .search_doccenter { width: 240px; }
  .topnav_doccenter > a, .topnav_doccenter .nav-link_doccenter { padding: 8px 11px; font-size: 14px; }
}
@media (max-width: 992px) {
  .topnav_doccenter { display: none; }
  .menu-btn_doccenter { display: grid; }
  .search_doccenter { width: 200px; }
}
@media (max-width: 640px) {
  .search_doccenter { display: none; }
}
/* 首页：移动端导航（复用侧栏组件，仅在展开时出现在头部内） */
.topbar_doccenter .sidebar_doccenter {
  display: none;
  position: static;
  padding-bottom: 14px;
}
.topbar_doccenter .sidebar_doccenter.open_doccenter { display: flex; }
/* 窄屏下隐藏搜索快捷键提示，避免输入区被挤压 */
@media (max-width: 992px) {
  .search_doccenter kbd { display: none; }
}
/* =========================================================
   深色头部（覆盖层：配合白色字 + 金色图形的 logo）
   --navy* 色板同时供头部与旧版浅色页脚使用
   ========================================================= */
:root {
  --navy_doccenter: #0b1220;
  --navy-2_doccenter: #101c30;
  --navy-line_doccenter: rgba(255, 255, 255, .10);
  --navy-text_doccenter: #c7d3e2;
  --navy-muted_doccenter: #94a6bc;
}
/* ---------- 头部 ---------- */
.topbar_doccenter {
  background: linear-gradient(180deg, rgba(11, 18, 32, .97) 0%, rgba(16, 28, 48, .94) 100%);
  border-bottom: 1px solid var(--navy-line_doccenter);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  box-shadow: 0 8px 28px rgba(5, 11, 22, .28);
}
/* logo 图片：透明底白色字，深色头上直接使用 */
.brand_doccenter { gap: 13px; }
.brand-img_doccenter {
  height: 38px;
  width: auto;
  display: block;
  flex-shrink: 0;
}
.brand-divider_doccenter {
  width: 1px;
  height: 24px;
  background: rgba(255, 255, 255, .18);
  flex-shrink: 0;
}
.brand-text_doccenter span {
  color: var(--navy-muted_doccenter);
  letter-spacing: 1.6px;
  font-size: 11.5px;
  white-space: nowrap;
}
.brand-text_doccenter b { color: #fff; }
/* 导航 */
.topnav_doccenter > a, .topnav_doccenter .nav-link_doccenter { color: var(--navy-text_doccenter); }
.topnav_doccenter > a:hover, .topnav_doccenter .nav-link_doccenter:hover {
  background: rgba(255, 255, 255, .08);
  color: #fff;
}
.topnav_doccenter > a.active_doccenter, .topnav_doccenter .nav-link_doccenter.active_doccenter {
  background: rgba(59, 130, 246, .22);
  color: #e8f1ff;
  font-weight: 600;
}
/* 搜索框 */
.search_doccenter {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .13);
}
.search_doccenter:focus-within {
  background: rgba(255, 255, 255, .10);
  border-color: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, .18);
}
.search_doccenter svg { color: var(--navy-muted_doccenter); }
.search_doccenter input { color: #e6eefb; }
.search_doccenter input::placeholder { color: #7f90a6; }
.search_doccenter kbd {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .14);
  color: #a9b7c9;
}
/* 汉堡按钮 */
.menu-btn_doccenter {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .14);
  color: #e2e8f0;
}
.menu-btn_doccenter:hover { background: rgba(255, 255, 255, .12); }
/* 头部内展开的移动端导航：作为浮层卡片 */
.topbar_doccenter .sidebar_doccenter { padding: 0 0 16px; }
.topbar_doccenter .side-card_doccenter { box-shadow: 0 18px 40px rgba(4, 10, 20, .35); }
/* ---------- 深色头尾的响应式微调 ---------- */
@media (max-width: 992px) {
  .brand-img_doccenter { height: 34px; }
  .brand-divider_doccenter { height: 22px; }
}
@media (max-width: 640px) {
  .brand-img_doccenter { height: 30px; }
  .brand-divider_doccenter { height: 20px; }
  .brand-text_doccenter span { letter-spacing: 1.2px; font-size: 11px; }
  .brand_doccenter { gap: 10px; }
}
/* 头部与 banner 齐平：去掉外阴影，避免贴边处出现暗影带 */
.topbar-home_doccenter { box-shadow: none; }
/* 六项导航在中等宽度下挤压搜索框：收紧间距并提前隐藏快捷键提示 */
@media (max-width: 1120px) {
  .topbar-inner_doccenter { gap: 16px; }
  .topnav_doccenter { margin-left: 2px; gap: 2px; }
  .topnav_doccenter > a, .topnav_doccenter .nav-link_doccenter { padding: 8px 10px; font-size: 14px; }
  .search_doccenter { width: 218px; }
  .search_doccenter kbd { display: none; }
}
/* =========================================================
   顶部导航：下拉超级菜单（nav-item / nav-drop）
   深色头 + 满屏白色条带；内容宽度与导航栏一致（1440 容器）
   三栏（核心服务 / 拓展服务 / 常见问题）+ 右侧推广卡
   ========================================================= */
/* 不自建定位上下文：面板改为相对 .topbar 定位，才能铺满整行 */
.nav-item_doccenter {
  position: static;
  display: flex;
  align-items: center;
  align-self: stretch;   /* 撑满导航栏高度，鼠标从文字下移到面板不会丢 hover */
}
.nav-link_doccenter {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}
.nav-caret_doccenter {
  width: 9px; height: 9px;
  flex-shrink: 0;
  opacity: .5;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-item_doccenter:hover > .nav-link_doccenter .nav-caret_doccenter,
.nav-item_doccenter:focus-within > .nav-link_doccenter .nav-caret_doccenter {
  transform: rotate(180deg);
  opacity: .95;
}
/* ---------- 面板容器：满屏条带 ---------- */
.nav-drop_doccenter {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 120;
  background: #fff;
  border-top: 1px solid rgba(37, 99, 235, .12);
  border-bottom: 1px solid rgba(15, 23, 42, .09);
  box-shadow:
    0 30px 56px -28px rgba(5, 14, 30, .5),
    0 4px 14px rgba(5, 14, 30, .08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
  pointer-events: none;
}
/* 顶部渐变细线，呼应页脚 */
.nav-drop_doccenter::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, #2563eb, #0ea5e9 38%, #22d3ee 62%, rgba(34, 211, 238, 0));
}
.nav-item_doccenter:hover > .nav-drop_doccenter,
.nav-item_doccenter:focus-within > .nav-drop_doccenter {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}
/* 内容层：复用 .wrap_doccenter，宽度与导航栏内容严格一致（1440 容器 + 32 边距） */
.nav-drop-inner_doccenter {
  display: flex;
  align-items: stretch;
  min-height: 298px;   /* 锁定面板高度，切换栏目时不跳动 */
}
/* ---------- 三栏 ---------- */
.nav-cols_doccenter {
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  grid-template-columns: 1.14fr 1fr 1.04fr;
  padding: 30px 0 28px;
}
.nav-col_doccenter {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0 34px;
}
.nav-col_doccenter:first-child { padding-left: 0; }
.nav-col_doccenter:last-child { padding-right: 0; }
.nav-col_doccenter + .nav-col_doccenter { border-left: 1px solid #eef2f9; }
.nav-col-title_doccenter {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  font-size: 12.2px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #94a3b8;
}
.nav-col-title_doccenter::before {
  content: '';
  width: 3px; height: 12px;
  margin-right: 8px;
  border-radius: 2px;
  background: linear-gradient(180deg, #3b82f6, #0ea5e9);
}
/* ---------- 核心服务条目 ---------- */
.nav-cell_doccenter {
  display: flex;
  gap: 10px;
  padding: 8px 9px;
  margin: 0 -9px;
  border-radius: 10px;
  transition: background .16s ease;
}
.nav-cell_doccenter:hover { background: #f4f7fd; }
.nav-cell-ico_doccenter {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: linear-gradient(135deg, #eff6ff, #e2edff);
  border: 1px solid #dce9fb;
  color: #2563eb;
}
.nav-cell-ico_doccenter svg { width: 17px; height: 17px; }
.nav-cell-body_doccenter {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-top: 1px;
}
.nav-cell-body_doccenter b {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13.6px;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.4;
  transition: color .16s ease;
}
.nav-cell-body_doccenter b em {
  font-style: normal;
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 10.2px;
  font-weight: 800;
  letter-spacing: .2px;
  color: #c2410c;
  background: linear-gradient(135deg, #fff2e8, #ffe5d4);
  border: 1px solid #ffe0c9;
  white-space: nowrap;
}
.nav-cell-body_doccenter i {
  font-style: normal;
  font-size: 12.2px;
  line-height: 1.5;
  color: #7b8aa0;
}
.nav-cell_doccenter:hover .nav-cell-body_doccenter b { color: #1d4ed8; }
/* ---------- 拓展服务（纯链接） ---------- */
.nav-link-cell_doccenter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 9px;
  margin: 0 -9px;
  border-radius: 9px;
  font-size: 13.2px;
  font-weight: 500;
  color: #3f4d61;
  transition: background .16s ease, color .16s ease;
}
.nav-link-cell_doccenter::after {
  content: '';
  flex: 0 0 auto;
  width: 5px; height: 5px;
  border-top: 1.4px solid currentColor;
  border-right: 1.4px solid currentColor;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity .16s ease, transform .16s ease;
}
.nav-link-cell_doccenter:hover { background: #f4f7fd; color: #1d4ed8; }
.nav-link-cell_doccenter:hover::after { opacity: .55; transform: rotate(45deg) translate(1px, -1px); }
.nav-link-cell_doccenter span {
  margin-left: auto;
  font-size: 11.2px;
  font-weight: 400;
  color: #a3b0c2;
  white-space: nowrap;
}
/* ---------- 常见问题 ---------- */
.nav-faq_doccenter {
  position: relative;
  padding: 6px 0 6px 15px;
  font-size: 13px;
  line-height: 1.55;
  color: #616f84;
  transition: color .16s ease;
}
.nav-faq_doccenter::before {
  content: '';
  position: absolute;
  left: 0; top: 13px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #cbd6e6;
  transition: background .16s ease;
}
.nav-faq_doccenter:hover { color: #1d4ed8; }
.nav-faq_doccenter:hover::before { background: #3b82f6; }
/* ---------- 栏底「查看全部」 ---------- */
.nav-more_doccenter {
  margin-top: auto;
  padding-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12.2px;
  font-weight: 700;
  color: #94a3b8;
  transition: color .16s ease, gap .16s ease;
}
.nav-more_doccenter:hover { color: #1d4ed8; gap: 7px; }
/* ---------- 右侧推广卡 ---------- */
.nav-promo_doccenter {
  position: relative;
  overflow: hidden;
  flex: 0 0 268px;
  display: flex;
  flex-direction: column;
  margin: 30px 0 28px 34px;
  padding: 20px 20px 18px;
  border-radius: 14px;
  background: linear-gradient(158deg, #102542 0%, #173a63 58%, #1d4f83 100%);
  transition: transform .2s ease, box-shadow .2s ease;
}
.nav-promo_doccenter::after {
  content: '';
  position: absolute;
  right: -46px; bottom: -56px;
  width: 158px; height: 158px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 189, 248, .34), rgba(56, 189, 248, 0) 70%);
}
.nav-promo_doccenter:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -14px rgba(8, 26, 52, .6);
}
.nav-promo-k_doccenter {
  align-self: flex-start;
  padding: 1px 7px;
  border-radius: 5px;
  font-size: 10.4px;
  font-weight: 800;
  letter-spacing: .6px;
  color: #08243f;
  background: #7dd3fc;
}
.nav-promo_doccenter b {
  position: relative;
  margin-top: 9px;
  font-size: 14.8px;
  line-height: 1.4;
  color: #fff;
}
.nav-promo_doccenter i {
  position: relative;
  margin-top: 5px;
  font-style: normal;
  font-size: 11.8px;
  line-height: 1.62;
  color: #9db4cf;
}
.nav-promo-go_doccenter {
  position: relative;
  margin-top: auto;
  padding-top: 12px;
  font-size: 12.4px;
  font-weight: 700;
  color: #7dd3fc;
}
.nav-promo-list_doccenter {
  position: relative;
  margin-top: 11px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.nav-promo-list_doccenter li {
  position: relative;
  padding-left: 13px;
  font-size: 11.6px;
  line-height: 1.5;
  color: #a9c1da;
}
.nav-promo-list_doccenter li::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: #38bdf8;
}
/* ---------- 令牌化导航的下拉在中等宽度收窄 ---------- */
@media (max-width: 1200px) {
  .nav-cols_doccenter { padding: 26px 0 24px; }
  .nav-col_doccenter { padding: 0 24px; }
  .nav-promo_doccenter { flex-basis: 230px; margin: 26px 0 24px 26px; }
  .nav-cell-body_doccenter b { font-size: 13.2px; }
}
@media (max-width: 1024px) {
  .search_doccenter { display: none; }
  .nav-cols_doccenter { padding: 24px 0 22px; }
  .nav-col_doccenter { padding: 0 20px; }
  .nav-promo_doccenter { display: none; }
  .nav-link-cell_doccenter span { display: none; }
}

/* =========================================================
   二、页脚
   ========================================================= */
/* 页脚容器：只做 1440 居中，不带左右内边距（旧版页脚用） */
.foot_wrap_doccenter {
  width: 100%;
  max-width: var(--maxw_doccenter);
  margin: 0 auto;
}
/* ---------- 旧版浅色页脚（demo.html / demo-detail.html 使用） ---------- */
.footer_doccenter {
  border-top: 1px solid var(--line_doccenter);
  background: #fff;
  padding: 26px 0;
}
.footer-inner_doccenter {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: var(--muted_doccenter);
}
.footer-links_doccenter { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links_doccenter a:hover { color: var(--primary_doccenter); }
@media (max-width: 1200px) {
  .foot_wrap_doccenter { padding: 0 24px; }
}
@media (max-width: 640px) {
  .foot_wrap_doccenter { padding: 0 16px; }
  .footer-inner_doccenter { flex-direction: column; text-align: center; }
}
/* ---------- 页脚 ---------- */
.footer_doccenter {
  position: relative;
  background: linear-gradient(180deg, #0a1424 0%, #0b1220 100%);
  border-top: 1px solid var(--navy-line_doccenter);
  padding: 26px 0;
}
.footer_doccenter::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, .55), rgba(14, 165, 233, .45), transparent);
}
.footer-inner_doccenter { color: var(--navy-muted_doccenter); }
.footer-links_doccenter a {
  color: #a7b6c9;
  transition: color .16s;
}
.footer-links_doccenter a:hover { color: #fff; }
/* ---------- 页脚左侧 logo 区（深色底适配） ---------- */
.footer-left_doccenter {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-logo_doccenter {
  height: 30px;
  width: auto;
  display: block;
  opacity: .96;
}
.footer-divider_doccenter {
  width: 1px;
  height: 16px;
  background: rgba(255, 255, 255, .16);
  flex-shrink: 0;
}
@media (max-width: 640px) {
  .footer-left_doccenter {
    flex-direction: column;
    gap: 10px;
    justify-content: center;
  }
  .footer-divider_doccenter { display: none; }
  .footer-logo_doccenter { height: 26px; }
}
/* =========================================================
   全站页脚 v2（12 个业务页共用）· ft_*
   深色底 + 顶部渐变细线 + 五列导航 + 二维码 + 双层法务信息
   ========================================================= */
.ft_doccenter {
  position: relative;
  padding: 0 0 22px;
  font-size: 13px;
  color: #aebccd;
  background:
    radial-gradient(760px 340px at 6% -16%, rgba(37, 99, 235, .20), transparent 68%),
    radial-gradient(560px 280px at 94% -8%, rgba(14, 165, 233, .12), transparent 70%),
    linear-gradient(180deg, #0b1526 0%, #080e1a 58%, #060a12 100%);
}
/* 顶部 1px 渐变线，替代生硬的分割实线 */
.ft_doccenter::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, .72) 24%, rgba(34, 211, 238, .55) 56%, transparent);
}
/* ---------- 上层：导航区 + 二维码 ---------- */
.ft-top_doccenter {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 176px;
  gap: clamp(28px, 3.4vw, 52px);
  padding: 54px 0 40px;
}
.ft-main_doccenter {
  display: grid;
  grid-template-columns: 1.32fr .86fr .86fr .86fr 1.12fr;
  gap: clamp(18px, 2.2vw, 32px);
  min-width: 0;
}
/* 品牌块 */
.ft-brand_doccenter { max-width: 300px; min-width: 0; }
.ft-logo_doccenter { height: 32px; width: auto; margin-top: -5px; opacity: .96; }
.ft-slogan_doccenter {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.9;
  color: #8fa1b6;
}
.ft-meta_doccenter { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.ft-meta_doccenter span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 11.5px;
  color: #9fb0c4;
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(255, 255, 255, .075);
}
.ft-meta_doccenter i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, .16);
}
/* 服务承诺：填补品牌列底部留白，兼作信任背书 */
.ft-promise_doccenter { display: flex; flex-direction: column; gap: 3px; margin-top: 18px; }
.ft-promise_doccenter li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  line-height: 1.7;
  color: #8fa1b6;
}
.ft-promise_doccenter svg { flex: 0 0 auto; margin-top: 4px; color: #22d3ee; opacity: .9; }
/* 链接列 */
.ft-col_doccenter { min-width: 0; }
.ft-col_doccenter h4 {
  position: relative;
  margin-bottom: 13px;
  padding-bottom: 11px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .4px;
  color: #eef4fb;
}
.ft-col_doccenter h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 20px; height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #3b82f6, #22d3ee);
}
.ft-col_doccenter a {
  display: block;
  padding: 5px 0;
  font-size: 12.5px;
  color: #9aabbd;
  transition: color .15s, transform .15s;
}
.ft-col_doccenter a:hover { color: #fff; transform: translateX(3px); }
/* 联系列 */
.ft-ct_doccenter {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  padding: 5px 0;
  transition: color .15s;
}
.ft-ct_doccenter svg { flex: 0 0 auto; margin-top: 3px; color: #4d7cb5; }
.ft-ct_doccenter span { min-width: 0; }
.ft-ct_doccenter em {
  display: block;
  font-style: normal;
  font-size: 11px;
  line-height: 1.6;
  color: #75889e;
}
.ft-ct_doccenter b {
  display: block;
  font-size: 12.8px;
  font-weight: 500;
  line-height: 1.6;
  color: #dbe6f3;
  letter-spacing: .2px;
  overflow-wrap: anywhere;
}
.ft-ct-tel_doccenter b { font-size: 15.5px; font-weight: 600; letter-spacing: .4px; }
.ft-ct_doccenter:hover b { color: #fff; }
/* 二维码 */
.ft-qr_doccenter { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.ft-qr-card_doccenter {
  width: 100%;
  aspect-ratio: 1 / 1;
  padding: 9px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 16px 38px rgba(2, 8, 20, .55), 0 0 0 1px rgba(255, 255, 255, .16);
}
.ft-qr-svg_doccenter { width: 100%; height: 100%; border-radius: 4px; }
.ft-qr-txt_doccenter { display: flex; flex-direction: column; align-items: center; gap: 3px; text-align: center; }
.ft-qr-txt_doccenter b { font-size: 12.5px; font-weight: 500; color: #e6eefa; }
.ft-qr-txt_doccenter span { font-size: 11px; color: #7c8fa6; }
/* 平板横条形态下才出现的第二段信息，桌面纵向隐藏 */
.ft-qr-alt_doccenter { display: none; }
/* ---------- 底栏 ---------- */
.ft-bottom_doccenter { border-top: 1px solid rgba(255, 255, 255, .075); padding-top: 20px; }
.ft-legal_doccenter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  font-size: 12px;
  color: #8498ad;
}
.ft-legal_doccenter a { color: #8498ad; transition: color .15s; }
.ft-legal_doccenter a:hover { color: #fff; }
.ft-legal_doccenter .ft-sep_doccenter { color: rgba(255, 255, 255, .18); }
.ft-police_doccenter { display: inline-flex; align-items: center; gap: 6px; }
.ft-police_doccenter svg { color: #6b8fb8; }
.ft-sub_doccenter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  margin-top: 13px;
  font-size: 11.5px;
  color: #6f8298;
}
.ft-sub_doccenter a { color: #6f8298; transition: color .15s; }
.ft-sub_doccenter a:hover { color: #fff; }
.ft-note_doccenter { color: #64788e; }
.ft-back_doccenter { display: inline-flex; align-items: center; gap: 5px; }
/* 友情链接：向上弹出的小面板 */
.ft-friend_doccenter { position: relative; }
.ft-friend_doccenter summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
  font-size: 11.5px;
  color: #6f8298;
  transition: color .15s;
}
.ft-friend_doccenter summary::-webkit-details-marker { display: none; }
.ft-friend_doccenter summary:hover { color: #fff; }
.ft-friend_doccenter summary svg { transition: transform .2s; }
.ft-friend_doccenter[open] summary svg { transform: rotate(180deg); }
.ft-friend-pop_doccenter {
  position: absolute;
  left: 0; bottom: calc(100% + 12px);
  z-index: 60;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: max-content;
  max-width: min(420px, 84vw);
  padding: 12px;
  border-radius: 12px;
  background: #101c30;
  border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .55);
}
.ft-friend-pop_doccenter a {
  padding: 4px 9px;
  border-radius: 7px;
  font-size: 12px;
  color: #a7b8cb;
  background: rgba(255, 255, 255, .045);
  transition: background .15s, color .15s;
}
.ft-friend-pop_doccenter a:hover { background: rgba(59, 130, 246, .24); color: #fff; }
/* ---------- 页脚响应式 ---------- */
@media (max-width: 1200px) {
  .ft-main_doccenter { grid-template-columns: 1.45fr .88fr .88fr .88fr 1.12fr; gap: 18px; }
  .ft-ct-tel_doccenter b { font-size: 14.5px; }
}
/* 平板：二维码改为横向卡片，铺在导航下方 */
@media (max-width: 1120px) {
  .ft-top_doccenter { grid-template-columns: minmax(0, 1fr); gap: 30px; padding: 46px 0 34px; }
  .ft-main_doccenter { grid-template-columns: 1.6fr .9fr .9fr .9fr 1.2fr; }
  .ft-qr_doccenter {
    flex-direction: row;
    align-items: center;
    gap: 16px;
    max-width: 520px;
    padding: 14px 18px;
    border-radius: 14px;
    background: rgba(255, 255, 255, .035);
    border: 1px solid rgba(255, 255, 255, .07);
  }
  .ft-qr-card_doccenter { flex: 0 0 100px; width: 100px; padding: 7px; border-radius: 11px; }
  .ft-qr-txt_doccenter { align-items: flex-start; text-align: left; gap: 4px; }
  .ft-qr-txt_doccenter b { font-size: 13px; }
  .ft-qr-alt_doccenter {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-left: auto;
    padding-left: 22px;
    border-left: 1px solid rgba(255, 255, 255, .09);
  }
  .ft-qr-alt_doccenter em { font-style: normal; font-size: 11px; color: #7c8fa6; }
  .ft-qr-alt_doccenter a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #dbe6f3;
    transition: color .15s;
  }
  .ft-qr-alt_doccenter a:hover { color: #fff; }
  .ft-qr-alt_doccenter svg { color: #4d7cb5; }
}
/* 四列：品牌独占一行，四个链接列并排 */
@media (max-width: 992px) {
  .ft-main_doccenter { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px 20px; }
  .ft-brand_doccenter { grid-column: 1 / -1; max-width: none; }
  .ft-slogan_doccenter { max-width: 560px; }
  .ft-meta_doccenter { margin-top: 14px; }
}
@media (max-width: 760px) {
  .ft-main_doccenter { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 18px; }
  .ft-top_doccenter { padding: 38px 0 30px; }
  .ft-slogan_doccenter { max-width: none; }
}
@media (max-width: 640px) {
  .ft_doccenter { padding-bottom: 18px; }
  .ft-logo_doccenter { height: 28px; }
  .ft-col_doccenter a { font-size: 12px; padding: 5px 0; }
  .ft-legal_doccenter { justify-content: center; text-align: center; }
  .ft-legal_doccenter .ft-sep_doccenter { display: none; }
  .ft-sub_doccenter { justify-content: center; text-align: center; }
  .ft-qr_doccenter { padding: 12px; gap: 12px; }
  .ft-qr-card_doccenter { flex: 0 0 88px; width: 88px; }
  .ft-qr-alt_doccenter { display: none; }
  .ft-friend-pop_doccenter { left: 0; transform: none; max-width: calc(100vw - 32px); }
}
@media (max-width: 420px) {
  .ft-main_doccenter { gap: 22px 14px; }
  .ft-ct-tel_doccenter b { font-size: 13.5px; }
}