:root {
  --blue: #1f6feb;
  --blue-deep: #0b4fd9;
  --hero: linear-gradient(120deg, #1d7dff 0%, #2f8bff 42%, #3aa0ff 100%);
  --orange: #ff7a2f;
  --text: #1f2a37;
  --muted: #667085;
  --bg: #fff;
  --alt: #f6f8fc;
  --footer: #5b6168;
  --max: 1180px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; color: var(--text); font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; background: #fff; border-bottom: 1px solid #eef1f6; }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 42px; height: 42px; }
.brand strong { display: block; font-size: 18px; line-height: 1.1; }
.brand small { color: #98a2b3; font-size: 10px; letter-spacing: 1px; }
.nav { display: flex; align-items: stretch; gap: 0; font-size: 14px; color: #344054; }
.nav-item { position: relative; padding: 26px 14px; display: flex; align-items: center; }
.nav-item > a { position: relative; padding: 0; white-space: nowrap; }
.nav a:hover, .nav a.active, .nav-item > a.router-link-active { color: var(--blue); }
.nav .has-sub > a::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 6px;
  vertical-align: middle;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid #667085;
}
.nav .has-sub:hover > a::after { border-top-color: var(--blue); }
.nav .has-sub:hover .sub { display: block; }
.nav .sub {
  display: none;
  position: absolute;
  top: 100%;
  left: 8px;
  min-width: 148px;
  background: #fff;
  border: 1px solid #eef1f6;
  box-shadow: 0 10px 28px rgba(31, 56, 88, .12);
  padding: 10px 0;
  z-index: 30;
  text-align: left;
}
.nav .sub a {
  display: block;
  padding: 8px 22px;
  white-space: nowrap;
  color: #344054;
}
.nav .sub a:hover, .nav .sub a.active {
  color: var(--blue);
  background: #f5f8ff;
}
.nav a:hover { color: var(--blue); }
.hero { background: var(--hero); color: #fff; overflow: hidden; min-height: 460px; display: flex; align-items: center; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 24px; padding: 48px 0; }
.hero-copy h1 { font-size: 46px; margin: 0 0 14px; font-weight: 600; }
.hero-copy p { font-size: 16px; opacity: .92; margin: 0 0 28px; }
.feature-boxes { display: flex; gap: 14px; flex-wrap: wrap; }
.feature-boxes span { width: 88px; height: 70px; border: 1px solid rgba(255,255,255,.55); display: flex; align-items: center; justify-content: center; text-align: center; font-size: 13px; line-height: 1.3; }
.hero-art { min-height: 320px; }
.section { padding: 72px 0; }
.section.alt { background: var(--alt); }
.section-title { text-align: center; margin-bottom: 36px; position: relative; }
.section-title span { display: block; font-size: 42px; font-weight: 800; color: #edf0f5; letter-spacing: 2px; line-height: 1; }
.section-title h1, .section-title h2 { margin: -18px 0 0; font-size: 26px; font-weight: 600; }
.section-title::after { content: ""; display: block; width: 28px; height: 3px; background: var(--blue); margin: 12px auto 0; }
.section-title.light span { color: rgba(255,255,255,.25); }
.section-title.light h1 { color: #fff; }
.page-banner { background: var(--hero); color: #fff; padding: 56px 0 40px; }
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.news-card, .product-card { background: #fff; border: 1px solid #eef1f6; padding: 22px; border-radius: 8px; box-shadow: 0 8px 24px rgba(31, 56, 88, .04); }
.news-card h3, .product-card h3 { margin: 0 0 10px; font-size: 18px; }
.news-card p, .product-card p { color: var(--muted); margin: 0; line-height: 1.7; }
.news-card time { display: block; margin-top: 12px; color: #98a2b3; font-size: 13px; }
.gallery-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.gallery-row figure { margin: 0; text-align: center; }
.gallery-row img { height: 180px; width: 100%; object-fit: cover; border-radius: 4px; background: #dbe7fb; }
.gallery-row figcaption { margin-top: 10px; color: #475467; }
.prose { line-height: 1.9; color: #344054; max-width: 900px; margin: 0 auto; }
.prose h3 { color: var(--blue-deep); }
.site-footer { background: var(--footer); color: #fff; padding: 42px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .6fr; gap: 24px; padding-bottom: 28px; }
.footer-grid.has-links { grid-template-columns: 1.4fr 1fr .6fr; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: #e6e8ec; }
.footer-links a:hover { color: #fff; }
.footer-qr { text-align: center; }
.footer-qr img { width: 112px; height: 112px; margin: 0 auto 8px; background: #fff; padding: 6px; }
.copyright { border-top: 1px solid rgba(255,255,255,.15); text-align: center; padding: 14px; font-size: 12px; color: #d0d5dd; display: flex; flex-wrap: wrap; gap: 10px 16px; justify-content: center; align-items: center; }
.copyright a { color: #d0d5dd; }
.copyright a:hover { color: #fff; }
.beian-police { display: inline-flex; align-items: center; gap: 6px; }
.beian-police img { width: 16px; height: 16px; display: inline-block; }
.contact-block { max-width: 720px; margin: 0 auto; }
.contact-block .prose { max-width: none; margin: 0 0 32px; }
.contact-block .form { max-width: none; margin: 0; }
.form { display: grid; gap: 12px; max-width: 720px; margin: 0 auto; }
.form input, .form textarea { width: 100%; border: 1px solid #d0d5dd; border-radius: 6px; padding: 10px 12px; }
.form button, .btn { background: var(--blue); color: #fff; border: 0; padding: 10px 18px; border-radius: 6px; cursor: pointer; }
.form .msg { color: var(--blue-deep); margin: 0; }
.captcha { display: flex; gap: 10px; }
.captcha img { height: 40px; cursor: pointer; background: #fff; }
@media (max-width: 900px) {
  .nav { display: none; }
  .hero-grid, .card-grid, .card-grid.three, .gallery-row, .footer-grid { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: 32px; }
  .section-title span { font-size: 28px; }
}