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

/* ============ 英雄区 ============ */
.fu-page-hero {
  position: relative;
  color: #fff;
  overflow: hidden;
  padding: 92px 20px 84px;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #2563eb 100%);
}
.fu-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .14) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .5;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent 75%);
          mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent 75%);
  pointer-events: none;
}
.fu-page-hero::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.16) 0%, transparent 60%);
  pointer-events: none;
}
.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, .32);
  border-radius: 999px;
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(4px);
  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: .92;
}
.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;
  border-radius: 12px;
  background: #fff;
  color: #1d4ed8 !important;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none !important;
  box-shadow: 0 12px 32px rgba(15, 23, 42, .2);
  transition: transform .18s ease, box-shadow .18s ease;
}
.fu-page-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(15, 23, 42, .26);
}
.fu-page-cta.ghost {
  background: transparent;
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, .55);
  box-shadow: none;
}
.fu-page-cta.ghost:hover { background: rgba(255, 255, 255, .1); }
.fu-page-hero-deco { display: none; }

/* ============ 锚点导航 ============ */
.fu-page-anchor {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #eef2f7;
  box-shadow: 0 4px 18px rgba(15, 23, 42, .05);
}
.fu-page-anchor-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}
.fu-page-anchor a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
  color: #475569;
  text-decoration: none !important;
  transition: all .16s ease;
}
.fu-page-anchor a:hover,
.fu-page-anchor a:focus {
  background: rgba(37, 99, 235, .08);
  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; }
}

/* ============ 板块通用 ============ */
.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 14px;
  border-radius: 999px;
  background: rgba(37, 99, 235, .1);
  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;
}

/* ============ 正文 ============ */
.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); }

/* ============ 核心优势卡片 ============ */
.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;
  border-radius: 16px;
  padding: 28px 24px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.fu-page-block:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, .25);
  box-shadow: 0 16px 36px rgba(15, 23, 42, .08);
}
.fu-page-block-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, .12), rgba(59, 130, 246, .22));
  color: var(--fu-primary, #2563eb);
  font-size: 22px;
}
.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;
}

/* ============ 面临的问题 ============ */
.fu-sec-problems {
  margin-top: 48px;
  padding: 64px 20px;
  background: #f4f7fc;
}
.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;
  border-radius: 16px;
  padding: 26px 22px;
  text-align: left;
  transition: transform .2s ease, box-shadow .2s ease;
}
.fu-problem-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(15, 23, 42, .08);
}
.fu-problem-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  background: rgba(37, 99, 235, .08);
  color: var(--fu-primary, #2563eb);
  font-size: 19px;
}
.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.ghost {
  color: var(--fu-primary, #2563eb) !important;
  background: transparent;
  border-color: rgba(37, 99, 235, .4);
}

/* ============ 解决方案架构 ============ */
.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: 12px 20px;
}
.fu-arch-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: 12px;
  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);
}

/* ============ 相关产品 ============ */
.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;
  border-radius: 16px;
  padding: 28px 24px;
  text-decoration: none !important;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.fu-product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, .3);
  box-shadow: 0 16px 36px rgba(15, 23, 42, .09);
}
.fu-product-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: #fff;
  font-size: 22px;
}
.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;
}

/* ============ 合作伙伴 ============ */
.fu-sec-partners { padding-bottom: 64px; }
.fu-partners-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.fu-partner-item {
  padding: 10px 20px;
  border: 1px solid #e5eaf2;
  border-radius: 12px;
  background: #fff;
  color: #64748b;
  font-size: 14px;
  font-weight: 600;
  transition: all .18s ease;
}
.fu-partner-item:hover {
  border-color: rgba(37, 99, 235, .3);
  color: var(--fu-primary, #2563eb);
}

/* ============ 底部 CTA ============ */
.fu-page-cta-banner {
  padding: 0 20px 64px;
  background: #fff;
}
.fu-page-cta-banner-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 52px 32px;
  border-radius: 20px;
  text-align: center;
  color: #fff;
  background: linear-gradient(120deg, #0f172a 0%, #1e3a8a 55%, #2563eb 100%);
  position: relative;
  overflow: hidden;
}
.fu-page-cta-banner-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: .6;
  pointer-events: none;
}
.fu-page-cta-banner-inner h2 {
  position: relative;
  margin: 0 0 12px;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
}
.fu-page-cta-banner-inner p {
  position: relative;
  margin: 0 0 26px;
  font-size: 15px;
  opacity: .88;
}
.fu-page-cta-banner-inner .fu-page-cta { position: relative; }

/* ============ 空页面 ============ */
.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);
}

/* ============ 响应式 ============ */
@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: 520px) {
  .fu-problems-grid { grid-template-columns: 1fr; }
}