/* ============== Reset & Base ============== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #333;
  background: #f7f8fa;
  line-height: 1.6;
  font-size: 14px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { font-family: inherit; }

.container { width: 1200px; max-width: 96%; margin: 0 auto; }

/* ============== Top Bar ============== */
.topbar {
  background: #fff;
  border-bottom: 1px solid #eee;
  font-size: 12px;
  color: #888;
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
}
.topbar a:hover { color: #1e2c4d; }

/* ============== Header / Nav ============== */
.header {
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 80px; height: 80px;
  color: #fff;
  display: grid; place-items: center;
  font-size: 22px; font-weight: 700;
}
.logo-text h1 {
  font-size: 18px;
  color: #1e2c4d;
  font-weight: 700;
  letter-spacing: .5px;
}
.logo-text span {
  font-size: 10px;
  letter-spacing: 2px;
  color: #e6a817;
  font-weight: 600;
}
.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav a {
  font-size: 14px;
  font-weight: 500;
  color: #333;
  position: relative;
  padding: 6px 0;
  transition: color .2s;
}
.nav a:hover, .nav a.active { color: #1e2c4d; }
.nav a.active::after {
  content: "";
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 3px;
  background: #e6a817;
  border-radius: 2px;
}
.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e6a817;
  font-weight: 600;
}
.header-phone i { font-style: normal; }

/* ============== Hero / Slider ============== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1e2c4d 0%, #2a3a5f 100%);
  color: #fff;
  overflow: hidden;
}
.hero-slide {
  display: none;
  min-height: 500px;
  padding: 100px 0;
  text-align: center;
  animation: fadeIn .6s;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}
.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(30, 44, 77, 0.55);
  z-index: 0;
}
.hero-slide > .container {
  position: relative;
  z-index: 1;
}
.hero-slide.active { display: block; }
@keyframes fadeIn { from {opacity:0;} to {opacity:1;} }
.hero-slide h2 {
  font-size: 38px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero-slide p {
  font-size: 16px;
  opacity: .85;
  margin-bottom: 28px;
}
.hero-cta {
  display: inline-block;
  background: #e6a817;
  color: #fff;
  padding: 12px 32px;
  border-radius: 4px;
  font-weight: 600;
  transition: background .2s;
}
.hero-cta:hover { background: #d4980f; }
.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  background: rgba(255,255,255,.2);
  color: #fff;
  border-radius: 50%;
  display: grid; place-items: center;
  cursor: pointer;
  transition: background .2s;
}
.hero-arrow:hover { background: rgba(255,255,255,.35); }
.hero-arrow.prev { left: 20px; }
.hero-arrow.next { right: 20px; }
.hero-dots {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 8px;
}
.hero-dots span {
  width: 10px; height: 10px;
  background: rgba(255,255,255,.4);
  border-radius: 50%;
  cursor: pointer;
  transition: background .2s;
}
.hero-dots span.active { background: #e6a817; }

/* ============== Brand strip ============== */
.brand-strip {
  background: #fff;
  margin-top: -40px;
  position: relative;
  z-index: 5;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.brand-card {
  border: 2px solid #eee;
  border-radius: 6px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color .2s, transform .2s;
  cursor: pointer;
}
.brand-card:hover, .brand-card.active {
  border-color: #e6a817;
  transform: translateY(-2px);
}
.brand-logo {
  width: 80px; height: 50px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.brand-info h3 {
  font-size: 16px;
  color: #1e2c4d;
  margin-bottom: 4px;
}
.brand-info p {
  font-size: 12px;
  color: #888;
}
.brand-arrow {
  margin-left: auto;
  color: #e6a817;
}

/* ============== Search section ============== */
.search-section {
  background: #fff;
  padding: 24px 0;
  margin-top: 0;
}
.search-box {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  overflow: hidden;
}
.search-box input {
  flex: 1;
  border: 0;
  padding: 12px 16px;
  font-size: 14px;
  outline: none;
}
.search-box button {
  background: #1e2c4d;
  color: #fff;
  padding: 0 28px;
  font-weight: 600;
}
.search-tags {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: #666;
}
.search-tags span:first-child { color: #888; }
.search-tags a {
  color: #666;
  padding: 2px 8px;
  border-radius: 3px;
  transition: all .2s;
}
.search-tags a:hover {
  background: #1e2c4d;
  color: #fff;
}

/* ============== Section common ============== */
.section { padding: 60px 0; }
.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: 28px;
  color: #1e2c4d;
  margin-bottom: 8px;
}
.section-title p {
  font-size: 13px;
  letter-spacing: 3px;
  color: #888;
  text-transform: uppercase;
  position: relative;
  display: inline-block;
  padding-bottom: 10px;
}
.section-title p::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 40px; height: 2px;
  background: #e6a817;
}

/* ============== Products / All Parts ============== */
.products-wrap {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
}
.sidebar-cat {
  background: #fff;
  border-radius: 8px;
  padding: 20px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.sidebar-cat h3 {
  font-size: 16px;
  color: #1e2c4d;
  padding: 0 20px 14px;
  border-left: 3px solid #1e2c4d;
  margin-bottom: 10px;
}
.sidebar-cat ul li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  font-size: 14px;
  color: #555;
  transition: all .2s;
  border-left: 3px solid transparent;
}
.sidebar-cat ul li a:hover,
.sidebar-cat ul li a.active {
  background: #f7f8fa;
  color: #1e2c4d;
  border-left-color: #e6a817;
  font-weight: 600;
}
.sidebar-cat ul li a span {
  font-size: 12px;
  color: #bbb;
}
.sidebar-cta {
  margin: 20px;
  padding: 24px 16px;
  background: linear-gradient(135deg, #1e2c4d, #2a3a5f);
  color: #fff;
  border-radius: 6px;
  text-align: center;
}
.sidebar-cta p { font-size: 12px; opacity: .8; margin-bottom: 4px; }
.sidebar-cta h4 { color: #e6a817; font-size: 20px; margin-bottom: 8px; }
.sidebar-cta small { font-size: 11px; opacity: .7; }

.products-main {
  background: #fff;
  border-radius: 8px;
  padding: 20px 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.products-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid #f0f0f0;
  margin-bottom: 20px;
}
.products-head h3 {
  font-size: 18px;
  color: #1e2c4d;
}
.products-head h3 span.tag {
  background: #1e2c4d;
  color: #fff;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 3px;
  margin-left: 8px;
}
.products-head .total {
  font-size: 13px;
  color: #888;
}
.products-head .total b { color: #1e2c4d; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.news-grid .case-card { aspect-ratio: 4/3; }
.news-grid .case-card .overlay { padding: 12px 14px; }
.news-grid .case-card .overlay h4 { font-size: 15px; line-height: 1.4; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-grid .case-card .overlay .summary { font-size: 12px; color: #c8d0e0; line-height: 1.5; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-grid .case-card .overlay span { font-size: 11px; color: #e6a817; }
@media (max-width: 900px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .news-grid { grid-template-columns: 1fr; } }
.product-card {
  border: 1px solid #f0f0f0;
  border-radius: 6px;
  padding: 12px;
  position: relative;
  transition: all .2s;
  cursor: pointer;
}
.product-card:hover {
  border-color: #e6a817;
  box-shadow: 0 4px 12px rgba(230,168,23,.15);
  transform: translateY(-2px);
}
.product-card .flag {
  position: absolute;
  top: 8px; left: 8px;
  background: #1e2c4d;
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 2px;
}
.product-card .flag.hot { background: #e74c3c; }
.product-card .img-wrap {
  width: 100%;
  height: 220px;
  background: #f7f8fa;
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}
.product-card .img-wrap img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
.product-card h4 {
  font-size: 13px;
  color: #333;
  margin-bottom: 4px;
  font-weight: 500;
}
.product-card .meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}
.product-card .meta .cat {
  background: #e6a817;
  color: #fff;
  padding: 1px 6px;
  border-radius: 2px;
}
.product-card .meta .brand { display: none; }

/* ============== Sub-category (Channel cover) ============== */
.subcat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.subcat-card {
  border: 1px solid #f0f0f0;
  border-radius: 6px;
  padding: 12px;
  text-align: center;
  transition: all .2s;
  cursor: pointer;
  background: #fff;
}
.subcat-card:hover {
  border-color: #e6a817;
  box-shadow: 0 4px 12px rgba(230,168,23,.15);
  transform: translateY(-2px);
}
.subcat-thumb {
  width: 100%;
  height: 120px;
  background: #f7f8fa;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 10px;
}
.subcat-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.subcat-card h4 {
  font-size: 14px;
  color: #1e2c4d;
  font-weight: 600;
  margin-bottom: 4px;
}
.subcat-meta {
  font-size: 12px;
  color: #e6a817;
}

/* Placeholder (no external image dependency) */
.ph {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: #1e2c4d;
  background:
    linear-gradient(135deg, #f7f8fa 0%, #e9ecf1 100%);
  letter-spacing: .5px;
  line-height: 1.4;
}
.product-card .img-wrap .ph {
  font-size: 14px;
}
.subcat-thumb .ph {
  font-size: 15px;
}

/* ============== About ============== */
.about-section { background: #fff; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.about-text h3 {
  font-size: 22px;
  color: #1e2c4d;
  margin-bottom: 16px;
}
.about-text h4 {
  font-size: 16px;
  color: #e6a817;
  margin-bottom: 16px;
}
.about-text p {
  color: #666;
  margin-bottom: 12px;
  line-height: 1.8;
}
.about-card {
  background: linear-gradient(135deg, #1e2c4d, #2a3a5f);
  color: #fff;
  border-radius: 8px;
  padding: 120px 40px;
  text-align: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  overflow: hidden;
}
.about-card-mask {
  position: absolute;
  inset: 0;
  background: rgba(30, 44, 77, 0.55);
  z-index: 0;
}
.about-card-content {
  position: relative;
  z-index: 1;
}
.about-card h3 { color: #fff; font-size: 22px; margin-bottom: 4px; position: relative; z-index: 1; }
.about-card p { color: #e6a817; font-size: 14px; margin-bottom: 0; position: relative; z-index: 1; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.stat {
  background: #f7f8fa;
  border-radius: 6px;
  padding: 20px 12px;
  text-align: center;
}
.stat .num {
  font-size: 28px;
  color: #1e2c4d;
  font-weight: 700;
  display: block;
}
.stat .label { font-size: 12px; color: #888; }

/* ============== Cases ============== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.case-card {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
}
.case-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.case-card:hover img { transform: scale(1.06); }
.case-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30,44,77,.95) 0%, rgba(30,44,77,0) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 16px;
  color: #fff;
}
.case-card .overlay h4 { font-size: 15px; margin-bottom: 4px; }
.case-card .overlay span { font-size: 11px; color: #e6a817; }

/* ============== Knowledge / Article List ============== */
.knowledge-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.k-card {
  background: #fff;
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  padding: 22px 26px;
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 22px;
  align-items: center;
  transition: all .25s;
  cursor: pointer;
}
.k-card:hover {
  border-color: #e6a817;
  box-shadow: 0 6px 18px rgba(230,168,23,.12);
  transform: translateX(4px);
}
.k-card .k-head {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #1e2c4d, #2a3a5f);
  color: #e6a817;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 32px;
  flex-shrink: 0;
}
.k-card .k-body { padding: 0; }
.k-card .k-body h4 {
  font-size: 16px;
  color: #1e2c4d;
  margin-bottom: 8px;
  font-weight: 600;
  transition: color .2s;
}
.k-card:hover .k-body h4 { color: #e6a817; }
.k-card .k-body p {
  font-size: 13px;
  color: #888;
  line-height: 1.7;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.k-card .k-body .more {
  color: #e6a817;
  font-size: 12px;
  font-weight: 500;
}
.k-card .k-arrow {
  color: #ccc;
  font-size: 22px;
  transition: all .25s;
  padding-left: 8px;
}
.k-card:hover .k-arrow {
  color: #e6a817;
  transform: translateX(4px);
}
.k-card .k-meta {
  font-size: 12px;
  color: #aaa;
  margin-top: 8px;
}
.k-card .k-meta span + span::before {
  content: "·";
  margin: 0 8px;
  color: #ddd;
}

@media (max-width: 768px) {
  .k-card {
    grid-template-columns: 60px 1fr;
    gap: 14px;
    padding: 16px 18px;
  }
  .k-card .k-head { width: 60px; height: 60px; font-size: 24px; }
  .k-card .k-arrow { display: none; }
}

/* ============== Contact ============== */
.contact-section { background: #fff; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.contact-card {
  text-align: center;
  padding: 30px 20px;
  border: 1px solid #f0f0f0;
  border-radius: 6px;
  transition: all .2s;
}
.contact-card:hover {
  border-color: #e6a817;
  transform: translateY(-2px);
}
.contact-icon {
  width: 50px; height: 50px;
  margin: 0 auto 14px;
  background: #1e2c4d;
  color: #e6a817;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 22px;
}
.contact-card h4 { color: #1e2c4d; margin-bottom: 10px; font-size: 16px; }
.contact-card .val { color: #e6a817; font-weight: 700; font-size: 18px; margin-bottom: 6px; }
.contact-card .sub { color: #888; font-size: 12px; }

/* ============== Footer ============== */
.footer {
  background: #1e2c4d;
  color: #aab4cc;
  padding: 50px 0 0;
  font-size: 13px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 30px;
  padding-bottom: 30px;
}
.footer h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}
.footer h4::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 30px; height: 2px;
  background: #e6a817;
}
.footer-brand .logo-text h2 { color: #fff; font-size: 16px; }
.footer-brand .logo-text span { color: #e6a817; }
.footer-brand p {
  margin-top: 16px;
  line-height: 1.8;
  color: #aab4cc;
}
.footer-brand .contact-line {
  margin-top: 14px;
  font-size: 12px;
}
.footer-brand .contact-line b { color: #e6a817; }
.footer ul li {
  padding: 6px 0;
  font-size: 14px;
}
.footer ul li a:hover { color: #e6a817; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 18px 0;
  text-align: center;
  font-size: 12px;
  color: #8893b3;
}

/* ============== Responsive ============== */
@media (max-width: 1024px) {
  .container { width: 100%; padding: 0 16px; }
  .nav { display: none; }
  .products-wrap { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

/* ============== Page Banner (inner pages) ============== */
.page-banner {
  background: linear-gradient(135deg, #1e2c4d 0%, #2a3a5f 100%);
  color: #fff;
  padding: 60px 0 40px;
  text-align: center;
}
.page-banner h1 {
  font-size: 32px;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.page-banner p {
  font-size: 14px;
  opacity: .8;
}

/* ============== Breadcrumb ============== */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: #888;
}
.breadcrumb a { color: #1e2c4d; }
.breadcrumb a:hover { color: #e6a817; }
.breadcrumb .sep { margin: 0 8px; color: #ccc; }

/* ============== Pages (pagination) ============== */
.pages,
.pager {
  margin: 40px 0 0;
  padding: 30px 0 10px;
  border-top: 1px solid #f0f0f0;
  text-align: center;
  font-size: 0;
}
.pages a,
.pages span,
.pages .current,
.pages .disabled,
.pages b,
.pager a,
.pager span,
.pager .current,
.pager .disabled,
.pager b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: auto !important;
  padding: 0 14px;
  margin: 0 2px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  color: #555;
  font-size: 13px;
  font-weight: 400;
  background: #fff;
  vertical-align: middle;
  transition: all .2s;
}
.pages a,
.pager a {
  cursor: pointer;
  text-decoration: none;
}
.pages a:hover,
.pager a:hover {
  color: #1e2c4d;
  border-color: #1e2c4d;
}
.pages .current,
.pages b,
.pager .current,
.pager b {
  color: #1e2c4d;
  border-color: #1e2c4d;
  font-weight: 500;
  background: #fff;
}
.pages .disabled,
.pager .disabled {
  color: #ccc;
  background: #fafafa;
  cursor: not-allowed;
  border-color: #eee;
}
.pages .pagination-info,
.pager .pagination-info {
  display: inline-flex;
  align-items: center;
  margin: 0 8px;
  color: #1e2c4d;
  font-size: 13px;
  height: auto !important;
  padding: 0 14px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  vertical-align: middle;
}
.pages .prev,
.pages .next,
.pager .prev,
.pager .next {
  padding: 0 14px;
  color: #1e2c4d;
}
.pages .prev:hover,
.pages .next:hover,
.pager .prev:hover,
.pager .next:hover {
  color: #1e2c4d;
  border-color: #1e2c4d;
}

/* Pager — FineCMS 标准分页（来自模板规范） */
.pager { text-align: center; }
.pager ul {
  display: flex !important;
  flex-wrap: wrap;
  justify-content: center !important;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none;
}
.pager ul li { display: inline-block; margin: 0 !important; padding: 0 !important; }
.pager ul li a {
  padding: 5px 15px;
  margin: 5px 5px;
  border: #dddddd solid 1px;
  display: inline-block;
  color: #555;
  background: #fff;
  text-decoration: none;
  height: auto;
  line-height: 1.5;
}
.pager ul li a:hover {
  border-color: #3ea8e2;
  color: #3ea8e2;
}
.pager ul li.active a {
  border-color: #3ea8e2;
  background-color: #3ea8e2;
  color: #fff;
}
.pager ul li a:not([href]):not([class]):hover {
  border-color: #dddddd;
}
.pager ul li.active a:hover {
  color: #fff;
  border-color: #3ea8e2 !important;
  background-color: #3ea8e2 !important;
}

/* ============== Page Card ============== */
.page-card {
  background: #fff;
  border-radius: 8px;
  padding: 30px 36px;
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
  margin-bottom: 40px;
}
.page-card h1, .page-card h2, .page-card h3 { color: #1e2c4d; }
.page-card p { color: #555; line-height: 1.8; margin-bottom: 12px; }
.neirong img { max-width: 100%; border-radius: 4px; margin: 12px 0; }

/* ============== Contact Form ============== */
.contact-form .form-row,
.bcp-form .bcp-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.contact-form input,
.contact-form textarea,
.bcp-form input,
.bcp-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
  font-family: inherit;
  box-sizing: border-box;
  background: #fff;
}
.contact-form input:focus,
.contact-form textarea:focus,
.bcp-form input:focus,
.bcp-form textarea:focus { border-color: #e6a817; }
.contact-form textarea,
.bcp-form textarea { resize: vertical; margin-bottom: 20px; min-height: 130px; }
.contact-form button,
.bcp-form button { font-size: 14px; }

/* ============== Block: 企业简介 ============== */
.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}
.intro-text h3 {
  font-size: 22px;
  color: #1e2c4d;
  margin-bottom: 6px;
}
.intro-text h4 {
  font-size: 15px;
  color: #e6a817;
  margin-bottom: 16px;
  font-weight: 600;
}
.intro-text p {
  color: #555;
  line-height: 1.9;
  margin-bottom: 12px;
}
.intro-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,.08);
  background: #f7f8fa;
}
.intro-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ============== Block: 服务优势 ============== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.advantage-card {
  background: #fff;
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  padding: 30px 20px;
  text-align: center;
  transition: all .25s;
}
.advantage-card:hover {
  border-color: #e6a817;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(230,168,23,.12);
}
.advantage-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #1e2c4d, #2a3a5f);
  color: #e6a817;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 28px;
}
.advantage-card h4 {
  color: #1e2c4d;
  font-size: 16px;
  margin-bottom: 10px;
  font-weight: 600;
}
.advantage-card p {
  color: #777;
  font-size: 13px;
  line-height: 1.7;
}

/* ============== Block: 联系我们 ============== */
.block-contact .contact-grid {
  grid-template-columns: repeat(3, 1fr);
  justify-content: space-between;
  justify-items: stretch;
}
@media (max-width: 1024px) {
  .intro-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .block-contact .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============== Back to Top ============== */
.back-to-top {
  position: fixed;
  right: 30px;
  bottom: 30px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: #1e2c4d;
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(30,44,77,.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: background .25s ease, color .25s ease, transform .25s ease, opacity .25s ease, visibility .25s;
  z-index: 999;
}
.back-to-top:hover {
  background: #e6a817;
  color: #fff;
  transform: translateY(0);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
/* 按钮压在深色页脚上时：白底深蓝箭头 */
.back-to-top.on-footer {
  background: #fff;
  color: #1e2c4d;
  box-shadow: 0 4px 16px rgba(0,0,0,.35);
}
.back-to-top.on-footer:hover {
  background: #e6a817;
  color: #fff;
}
@media (max-width: 1024px) {
  .back-to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; font-size: 20px; }
}