footer.site-footer {
  display: block;
  width: calc(100% - 88px);
  max-width: 1328px;
  margin: 72px auto 0;
  padding: 52px 0 26px;
  border: 0;
  border-top: 1px solid #dce4df;
  background: transparent;
  color: #65776e;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.8;
  text-align: left;
  letter-spacing: normal;
}
.site-footer .sf-top { display: grid; grid-template-columns: 1.8fr repeat(4, minmax(0, 1fr)); gap: 32px; padding-bottom: 42px; }
.site-footer .sf-wordmark { display: inline-flex; align-items: center; gap: 12px; color: #182c25; font-size: 16px; font-weight: 650; line-height: 1.5; text-decoration: none; }
.site-footer .sf-mark { font-size: 29px; letter-spacing: -5px; padding-right: 5px; }
.site-footer .sf-mark span { color: #169879; }
.site-footer p.sf-tagline { margin: 20px 0 12px; color: #355447; font-size: 14px; font-weight: 550; line-height: 1.8; }
.site-footer p.sf-description { margin: 0; color: #7a8981; font-size: 13px; line-height: 1.95; }
.site-footer .sf-group { display: block; min-width: 0; }
.site-footer .sf-group h2 { margin: 5px 0 20px; color: #293f34; font-size: 14px; font-weight: 600; line-height: 1.8; letter-spacing: 0; }
.site-footer .sf-group ul { display: grid; gap: 7px; list-style: none; padding: 0; margin: 0; }
.site-footer .sf-group a { display: inline-block; padding: 3px 0; color: #6f7e75; font-size: 14px; line-height: 1.8; text-decoration: none; }
.site-footer a:hover, .site-footer .sf-group a[aria-current="page"] { color: #148269; }
.site-footer a:focus-visible, .site-footer button:focus-visible { outline: 2px solid #16856b; outline-offset: 5px; border-radius: 2px; }
.site-footer .sf-bottom { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; border-top: 1px solid #e1e7e3; padding-top: 22px; }
.site-footer p.sf-copyright { margin: 0 0 7px; font-size: 12px; color: #6c7e73; line-height: 1.8; }
.site-footer p.sf-disclaimer { margin: 0; font-size: 12px; color: #8a978f; line-height: 1.8; }
.site-footer .sf-filing { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 8px; font-size: 12px; }
.site-footer .sf-filing a { color: #7b8d81; }
.site-footer .sf-back-top { display: inline-flex; align-items: center; gap: 15px; flex-shrink: 0; min-height: 44px; padding: 0 4px 0 12px; border: 0; background: transparent; color: #476756; font: inherit; font-size: 13px; cursor: pointer; }
.site-footer .sf-back-top:hover { color: #148269; }
/* Content pages already have their own horizontal gutters. */
.content > footer.site-footer, .tutorial-shell > footer.site-footer { width: 100%; margin-top: 64px; }
@media (max-width: 1100px) {
  .site-footer .sf-top { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px 24px; }
  .site-footer .sf-brand { grid-column: 1 / -1; }
  .site-footer p.sf-description br { display: none; }
  .site-footer p.sf-tagline { margin-top: 14px; }
}
@media (max-width: 700px) {
  footer.site-footer { width: calc(100% - 48px); margin-top: 48px; padding-top: 34px; }
  .site-footer .sf-top { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 22px; padding-bottom: 30px; }
  .site-footer .sf-wordmark { font-size: 16px; }
  .site-footer .sf-group h2 { margin: 0 0 12px; }
  .site-footer .sf-group ul { gap: 4px; }
  .site-footer .sf-group a { padding: 6px 0; }
  .site-footer .sf-bottom { flex-wrap: wrap; gap: 12px; }
  .site-footer .sf-back-top { padding-left: 0; }
}