:root {
  --blue: #1e50ae;
  --green: #2e8b57;
  --orange: #e67e22;
  --text: #333;
  --muted: #666;
  --bg: #f7f9fc;
  --white: #fff;
  --max: 1100px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: var(--white);
  border-bottom: 1px solid #e6ebf2;
  font-size: 14px;
  color: var(--muted);
}
.topbar-inner, .nav-inner, .main, .footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}
.topbar-inner { padding-top: 8px; padding-bottom: 8px; }

.header {
  background: linear-gradient(90deg, #fff 0%, #f0f6ff 100%);
  border-bottom: 3px solid var(--green);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo {
  height: 72px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}
.brand-sub-en {
  margin: 0;
  font-size: 14px;
  color: var(--blue);
  letter-spacing: 0.5px;
}
.brand-title {
  margin: 0;
  font-size: 28px;
  color: var(--blue);
  letter-spacing: 1px;
}
.brand-sub { margin: 0; font-size: 13px; color: var(--muted); }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 15px;
}
.nav-links a {
  color: #222;
  font-weight: 500;
}
.nav-links a.active { color: var(--blue); border-bottom: 2px solid var(--orange); }

.hero {
  position: relative;
  min-height: 360px;
  background: center/cover no-repeat;
  display: flex;
  align-items: center;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(30,80,174,.75), rgba(46,139,87,.45));
}
.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding: 48px 16px;
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
}
.hero h2 { margin: 0 0 12px; font-size: 34px; }
.hero p { margin: 0; font-size: 18px; max-width: 720px; }

.main { padding: 28px 16px 40px; }
.card {
  background: var(--white);
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(30,80,174,.08);
  padding: 24px;
  margin-bottom: 20px;
}
.card h2, .card h3 { color: var(--blue); margin-top: 0; }
.card h2 { font-size: 22px; border-left: 4px solid var(--orange); padding-left: 10px; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.product-card {
  background: var(--white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}
.product-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  background: #eef2f8;
}
.product-card .body { padding: 14px 16px 18px; }
.product-card h3 { margin: 0 0 8px; font-size: 17px; color: var(--blue); }

.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { margin-bottom: 8px; }

.footer {
  background: #1a2740;
  color: #d7deea;
  font-size: 14px;
  margin-top: 24px;
}
.footer a { color: #9ec5ff; }
.footer-inner { padding: 28px 16px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.footer h4 { margin: 0 0 10px; color: #fff; }
.icp { margin-top: 16px; padding-top: 14px; border-top: 1px solid #33415f; font-size: 13px; }

.prose p { text-indent: 2em; text-align: justify; margin: 0 0 1em; }

@media (max-width: 640px) {
  .brand-title { font-size: 22px; }
  .hero h2 { font-size: 26px; }
}