:root{
  --sa-bg:#f6f8ff;
  --sa-line:rgba(17,24,39,.08);
  --sa-ink:#111827;
  --sa-muted:#5f6b7a;
  --sa-primary:#1b4dff;
  --sa-accent:#16c7a1;
  --sa-shadow:0 18px 48px rgba(18,36,97,.08);
}
html{scroll-behavior:smooth;}
body.sponsor-app{
  margin:0;
  color:var(--sa-ink);
  background:
    radial-gradient(circle at top left, rgba(27,77,255,.14), transparent 38rem),
    radial-gradient(circle at 88% 12%, rgba(22,199,161,.16), transparent 30rem),
    var(--sa-bg);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
}
body.sponsor-app.admin-bar .sponsor-appbar{top:32px;}
.sponsor-appbar{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:blur(18px);
  background:rgba(246,248,255,.84);
  border-bottom:1px solid var(--sa-line);
}
.sponsor-appbar__inner{
  width:min(1280px, calc(100% - 32px));
  min-height:76px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.sponsor-appbar__brand{
  display:flex;
  align-items:center;
  gap:12px;
  color:inherit;
  text-decoration:none;
}
.sponsor-appbar__brand strong{display:block;font-size:18px;line-height:1.1;}
.sponsor-appbar__brand small{display:block;color:var(--sa-muted);font-size:12px;margin-top:2px;}
.sponsor-appbar__mark{
  width:44px;height:44px;border-radius:16px;display:grid;place-items:center;
  color:#fff;
  background:linear-gradient(135deg,var(--sa-primary),var(--sa-accent));
  box-shadow:0 14px 30px rgba(27,77,255,.22);
}
.sponsor-appbar__icon{width:24px;height:24px;display:block;}
.sponsor-appbar__links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.sponsor-appbar__links a{color:#334155;text-decoration:none;font-weight:700;font-size:14px;}
.sponsor-appmain{padding:18px 0 40px;}
@media (max-width: 782px){
  body.sponsor-app.admin-bar .sponsor-appbar{top:46px;}
}
@media (max-width: 720px){
  .sponsor-appbar__inner{width:min(100% - 20px, 1280px);min-height:68px;}
  .sponsor-appbar__links{gap:12px;font-size:13px;}
  .sponsor-appmain{padding:10px 0 28px;}
}