.fu-page { min-height: 48vh; }

 
.fu-page-hero {
  position: relative;
  color: #fff;
  overflow: hidden;
  padding: 92px 20px 84px;
  background: linear-gradient(160deg, #101a2e 0%, #18294e 100%);
}
.fu-page-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}
.fu-page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, .28);
  background: rgba(255, 255, 255, .08);
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .92);
}
.fu-page-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.18;
}
.fu-page-hero-sub {
  margin: 0 auto 30px;
  max-width: 680px;
  font-size: 16px;
  line-height: 1.8;
  opacity: .88;
}
.fu-page-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.fu-page-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  height: 46px;
  padding: 0 24px;
  background: #fff;
  color: #1d4ed8 !important;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none !important;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease;
}
.fu-page-cta:hover { background: #f2f6ff; }
.fu-page-cta.ghost {
  background: transparent;
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, .45);
}
.fu-page-cta.ghost:hover { background: rgba(255, 255, 255, .08); }

 
.fu-page-anchor {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #eef2f7;
}
.fu-page-anchor-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}
.fu-page-anchor a {
  padding: 8px 16px;
  font-size: 14px;
  color: #475569;
  text-decoration: none !important;
  transition: color .14s ease, background-color .14s ease;
}
.fu-page-anchor a:hover,
.fu-page-anchor a:focus {
  background: rgba(37, 99, 235, .07);
  color: var(--fu-primary, #2563eb);
}
@media (max-width: 640px) {
  .fu-page-anchor-inner { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; padding: 8px 14px; }
  .fu-page-anchor a { white-space: nowrap; padding: 7px 12px; font-size: 13px; }
}

 
.fu-page-stats {
  background: #fff;
  border-bottom: 1px solid #eef2f7;
}
.fu-page-stats-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 34px 20px;
}
.fu-page-stats-head {
  text-align: center;
  margin-bottom: 22px;
}
.fu-page-stats-head h2 {
  margin: 0 0 8px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  color: #0f172a;
}
.fu-page-stats-head p {
  margin: 0;
  color: #64748b;
  font-size: 14.5px;
}
.fu-page-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.fu-page-stat {
  text-align: center;
  padding: 6px 12px;
}
.fu-page-stat + .fu-page-stat {
  border-left: 1px solid #eef2f7;
}
.fu-page-stat b {
  display: block;
  font-size: clamp(24px, 2.8vw, 32px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--fu-primary, #2563eb);
  line-height: 1.2;
}
.fu-page-stat span {
  display: block;
  margin-top: 6px;
  color: #64748b;
  font-size: 13.5px;
}

 
.fu-page-sec { padding: 64px 20px 0; }
.fu-page-sec-wrap { max-width: 1080px; margin: 0 auto; }
.fu-page-sec-head {
  text-align: center;
  margin-bottom: 38px;
}
.fu-page-sec-tag {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 12px;
  border: 1px solid rgba(37, 99, 235, .25);
  color: var(--fu-primary, #2563eb);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.fu-page-sec-head h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -.01em;
}
.fu-page-sec-head p {
  margin: 0 auto;
  max-width: 620px;
  color: #64748b;
  font-size: 15px;
  line-height: 1.7;
}

 
.fu-sec-content .fu-page-sec-wrap { max-width: 880px; }
.fu-page-content-inner {
  color: #475569;
  font-size: 15px;
  line-height: 1.9;
}
.fu-page-content-inner p { margin: 0 0 14px; }
.fu-page-content-inner a { color: var(--fu-primary, #2563eb); }

 
.fu-sec-advantages { padding-bottom: 16px; }
.fu-page-blocks-inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.fu-page-block {
  background: #fff;
  border: 1px solid #e8edf4;
  padding: 26px 22px;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.fu-page-block:hover {
  border-color: #c7d7f5;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .06);
}
.fu-page-block-icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  background: rgba(37, 99, 235, .08);
  color: var(--fu-primary, #2563eb);
  font-size: 21px;
}
.fu-page-block h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: #0f172a;
}
.fu-page-block p {
  margin: 0;
  color: #64748b;
  font-size: 14px;
  line-height: 1.7;
}

 
.fu-sec-problems {
  margin-top: 48px;
  padding: 64px 20px;
  background: #f6f8fb;
}
.fu-problems-desc {
  max-width: 760px;
  margin: -12px auto 28px;
  text-align: center;
  color: #64748b;
  font-size: 15px;
  line-height: 1.8;
}
.fu-problems-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.fu-problem-card {
  background: #fff;
  border: 1px solid #e8edf4;
  padding: 24px 20px;
  text-align: left;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.fu-problem-card:hover {
  border-color: #c7d7f5;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .06);
}
.fu-problem-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  background: rgba(37, 99, 235, .08);
  color: var(--fu-primary, #2563eb);
  font-size: 18px;
}
.fu-problem-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
}
.fu-problem-card p {
  margin: 0;
  color: #64748b;
  font-size: 13.5px;
  line-height: 1.7;
}
.fu-problems-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 32px;
}
.fu-problems-cta .fu-page-cta { color: #fff !important; background: var(--fu-primary, #2563eb); }
.fu-problems-cta .fu-page-cta:hover { background: var(--fu-primary-dark, #1d4ed8); }
.fu-problems-cta .fu-page-cta.ghost {
  color: var(--fu-primary, #2563eb) !important;
  background: transparent;
  border-color: rgba(37, 99, 235, .4);
}
.fu-problems-cta .fu-page-cta.ghost:hover { background: rgba(37, 99, 235, .06); }

 
.fu-sec-arch { padding-bottom: 16px; }
.fu-arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.fu-arch-desc {
  color: #475569;
  font-size: 15px;
  line-height: 1.9;
}
.fu-arch-desc p { margin: 0 0 12px; }
.fu-arch-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 18px;
}
.fu-arch-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  background: #f6f9fd;
  color: #334155;
  font-size: 14px;
  line-height: 1.6;
}
.fu-arch-points li i {
  color: var(--fu-primary, #2563eb);
  margin-top: 2px;
  font-size: 16px;
  flex: none;
}
.fu-arch-cta { margin-top: 22px; }
.fu-arch-cta .fu-page-cta {
  color: #fff !important;
  background: var(--fu-primary, #2563eb);
}
.fu-arch-cta .fu-page-cta:hover { background: var(--fu-primary-dark, #1d4ed8); }

 
.fu-sec-products { padding-bottom: 16px; }
.fu-products-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.fu-product-card {
  display: block;
  background: #fff;
  border: 1px solid #e8edf4;
  padding: 26px 22px;
  text-decoration: none !important;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.fu-product-card:hover {
  border-color: #c7d7f5;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .06);
}
.fu-product-icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  background: rgba(37, 99, 235, .08);
  color: var(--fu-primary, #2563eb);
  font-size: 21px;
}
.fu-product-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: #0f172a;
}
.fu-product-card p {
  margin: 0 0 14px;
  color: #64748b;
  font-size: 14px;
  line-height: 1.7;
}
.fu-product-more {
  color: var(--fu-primary, #2563eb);
  font-size: 14px;
  font-weight: 600;
}

 
.fu-sec-partners { padding-bottom: 64px; }
.fu-partners-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.fu-partner-item {
  padding: 10px 20px;
  border: 1px solid #e5eaf2;
  background: #fff;
  color: #64748b;
  font-size: 14px;
  font-weight: 600;
  transition: border-color .16s ease, color .16s ease;
}
.fu-partner-item:hover {
  border-color: rgba(37, 99, 235, .35);
  color: var(--fu-primary, #2563eb);
}

 
.fu-page-cta-banner {
  padding: 0 20px 64px;
  background: #fff;
}
.fu-page-cta-banner-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 46px 32px;
  text-align: center;
  color: #0f172a;
  background: #f6f8fb;
  border-top: 2px solid var(--fu-primary, #2563eb);
}
.fu-page-cta-banner-inner h2 {
  position: relative;
  margin: 0 0 10px;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 800;
}
.fu-page-cta-banner-inner p {
  position: relative;
  margin: 0 0 24px;
  font-size: 15px;
  color: #64748b;
}
.fu-page-cta-banner-inner .fu-page-cta {
  position: relative;
  color: #fff !important;
  background: var(--fu-primary, #2563eb);
}
.fu-page-cta-banner-inner .fu-page-cta:hover {
  background: var(--fu-primary-dark, #1d4ed8);
}

 
.fu-page-empty {
  max-width: 560px;
  margin: 80px auto;
  text-align: center;
  padding: 0 20px;
}
.fu-page-empty h1 {
  font-size: 28px;
  margin-bottom: 12px;
  color: #0f172a;
}
.fu-page-empty p {
  color: #64748b;
  margin-bottom: 24px;
}
.fu-page-empty .fu-page-cta {
  color: #fff !important;
  background: var(--fu-primary, #2563eb);
}
.fu-page-empty .fu-page-cta:hover { background: var(--fu-primary-dark, #1d4ed8); }

 
@media (max-width: 900px) {
  .fu-page-hero { padding: 64px 16px 52px; }
  .fu-page-blocks-inner,
  .fu-products-grid { grid-template-columns: 1fr; }
  .fu-problems-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fu-arch-grid { grid-template-columns: 1fr; gap: 24px; }
  .fu-arch-points { grid-template-columns: 1fr; }
  .fu-page-sec { padding: 48px 16px 0; }
  .fu-sec-problems { padding: 48px 16px; }
  .fu-sec-partners { padding-bottom: 48px; }
  .fu-page-cta-banner { padding: 0 16px 48px; }
}
@media (max-width: 760px) {
  .fu-page-stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 22px; }
  /* 两列布局下去掉第三格的左侧线 */
  .fu-page-stat:nth-child(3) { border-left: none; }
}
@media (max-width: 520px) {
  .fu-problems-grid { grid-template-columns: 1fr; }
}