/* ===== 统一站点导航 / 页脚（营销页 + 登录/管理页共用） ===== */
:root{
  --navy:#1e3a5f; --blue:#2563eb; --blue-2:#3b82f6;
  --ink:#1e293b; --slate-600:#475569; --slate-500:#64748b; --slate-200:#e2e8f0; --slate-50:#f8fafc;
  --grad-blue:linear-gradient(135deg,var(--navy),var(--blue));
}
.site-nav{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--slate-200);
}
.site-nav-inner{
  max-width:1120px; margin:0 auto; padding:11px 22px;
  display:flex; align-items:center; justify-content:space-between; gap:14px;
}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:inherit}
.brand-mark{width:38px;height:38px;display:block;border-radius:10px;box-shadow:0 4px 12px rgba(30,58,95,.25);flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-title{font-size:16px;font-weight:800;color:var(--navy);letter-spacing:.3px}
.brand-sub{font-size:11px;color:var(--slate-500);letter-spacing:2px}
.site-nav-links{display:flex; align-items:center; gap:4px; flex-wrap:wrap; justify-content:flex-end}
.nav-link{
  font-size:14px; font-weight:600; color:#334155; text-decoration:none;
  padding:8px 12px; border-radius:9px; white-space:nowrap;
  transition:background .15s, color .15s;
}
.nav-link:hover{background:var(--slate-50); color:var(--blue)}
.nav-link.active{color:var(--blue); background:rgba(37,99,235,.10)}
.nav-cta{
  background:var(--grad-blue); color:#fff !important;
  box-shadow:0 6px 16px rgba(37,99,235,.30); margin-left:4px;
}
.nav-cta:hover{filter:brightness(1.05); background:var(--grad-blue)}

/* 营销页通用容器 */
.marketing-body{background:#f8fafc; color:var(--ink); font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif; line-height:1.7}
.marketing-main{max-width:1120px; margin:0 auto; padding:0 22px}

/* 统一页脚 */
.site-footer{background:#0f172a; color:#94a3b8; font-size:13px; margin-top:48px}
.site-footer-inner{max-width:1120px; margin:0 auto; padding:30px 22px; display:flex; flex-wrap:wrap; gap:20px; justify-content:space-between; align-items:center}
.site-footer .flinks{display:flex; gap:18px; flex-wrap:wrap}
.site-footer a{color:#cbd5e1; text-decoration:none}
.site-footer a:hover{color:#fff; text-decoration:underline}
.site-footer .copy{font-size:12px; color:#64748b; line-height:1.6}

/* 登录页包裹（顶栏 + 居中卡片） */
.login-wrap{display:flex; align-items:center; justify-content:center; min-height:calc(100vh - 61px); padding:24px}

@media(max-width:560px){
  .brand-sub{display:none}
  .nav-link{padding:7px 9px; font-size:13px}
}
@media(max-width:420px){
  .site-nav-inner{padding:9px 14px; gap:8px}
  .brand-title{font-size:15px}
  .nav-link{padding:6px 7px; font-size:12px}
  .nav-cta{margin-left:2px; padding:6px 9px}
  .site-footer-inner{padding:24px 16px; gap:14px}
  .site-footer .flinks{gap:14px}
}