/* 安全显微镜官网样式：与产品主色 #2F6BFF 保持一致 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; color: #1f2329; background: #fff; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* 按钮 */
.btn {
  display: inline-block; background: #2f6bff; color: #fff;
  padding: 10px 28px; border-radius: 22px; font-size: 15px; transition: opacity .2s;
}
.btn:hover { opacity: .88; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 14px 40px; font-size: 16px; }
.btn-ghost { background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .6); }

/* 导航 */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, .95); backdrop-filter: blur(6px); border-bottom: 1px solid #eef0f3; }
.nav-inner { max-width: 1120px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 40px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand img { width: 32px; height: 32px; object-fit: contain; }
.nav-links { flex: 1; display: flex; gap: 32px; font-size: 15px; color: #5a5e66; }
.nav-links a:hover { color: #2f6bff; }

/* 首屏 */
.hero {
  background: linear-gradient(135deg, #2f6bff 0%, #1e3fae 100%);
  color: #fff; text-align: center; padding: 96px 24px 88px;
}
.hero-inner { max-width: 860px; margin: 0 auto; }
.hero h1 { font-size: 44px; letter-spacing: 2px; }
.hero-sub { margin-top: 20px; font-size: 18px; opacity: .9; }
.hero-btns { margin-top: 36px; display: flex; justify-content: center; gap: 20px; }
.hero-stats { margin-top: 64px; display: flex; justify-content: center; gap: 72px; }
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat b { font-size: 32px; }
.stat span { font-size: 14px; opacity: .8; }

/* 通用区块 */
.section { padding: 80px 24px; max-width: 1120px; margin: 0 auto; }
.section-alt { max-width: none; background: #f5f7fa; }
.section-alt > * { max-width: 1120px; margin-left: auto; margin-right: auto; }
.section-title { text-align: center; font-size: 30px; }
.section-sub { text-align: center; color: #8a8f99; margin-top: 10px; }

/* 功能卡片 */
.grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: #f5f7fa; border-radius: 12px; padding: 28px 24px; transition: box-shadow .2s, transform .2s; }
.section-alt .card { background: #fff; }
.card:hover { box-shadow: 0 8px 24px rgba(47, 107, 255, .12); transform: translateY(-2px); }
.card-icon { font-size: 30px; }
.card h3 { margin-top: 14px; font-size: 17px; }
.card p { margin-top: 8px; font-size: 14px; color: #6b7280; line-height: 1.7; }

/* 行业 */
.ind-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.ind-item {
  background: #fff; border-radius: 12px; padding: 28px 0; text-align: center;
  font-size: 32px; display: flex; flex-direction: column; gap: 10px;
}
.ind-item span { font-size: 15px; color: #4b5563; }

/* 价格 */
.price-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card {
  position: relative; background: #f5f7fa; border-radius: 16px; padding: 36px 28px;
  text-align: center; display: flex; flex-direction: column; gap: 18px;
}
.price-card.hot { background: #fff; border: 2px solid #2f6bff; box-shadow: 0 10px 30px rgba(47, 107, 255, .15); }
.hot-flag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: #2f6bff; color: #fff; font-size: 12px; padding: 4px 14px; border-radius: 12px;
}
.price { font-size: 36px; font-weight: 700; color: #2f6bff; }
.price span { font-size: 14px; color: #8a8f99; font-weight: 400; }
.price-card ul { display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: #4b5563; flex: 1; }

/* 联系我们 */
.contact-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-item { background: #fff; border-radius: 12px; padding: 28px; text-align: center; display: flex; flex-direction: column; gap: 8px; }
.contact-item b { font-size: 16px; }
.contact-item span { color: #6b7280; font-size: 14px; }

/* 页脚 */
.footer { text-align: center; padding: 32px 24px; color: #8a8f99; font-size: 13px; border-top: 1px solid #eef0f3; }

/* 响应式 */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 32px; }
  .hero-stats { gap: 40px; }
  .grid, .price-grid, .contact-grid { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
}