* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font: 14px/1.6 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #f5f5f5;
  color: #333;
}

.nav {
  background: #fff;
  border-bottom: 1px solid #eee;
}

.nav-c {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-m {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav-a {
  font-size: 14px;
  color: #333;
  text-decoration: none;
}

.nav-a:hover { color: #C2684A; }

.banner {
  position: relative;
  width: 100%;
}

.banner-i {
  width: 100%;
  height: auto;
  display: block;
}

.page-title {
  text-align: center;
  padding: 30px 20px;
  background: #fff;
  border-bottom: 1px solid #eee;
}

.title-t {
  font: 700 28px sans-serif;
  color: #333;
  margin-bottom: 8px;
}

.title-s {
  font-size: 14px;
  color: #666;
}

.filter {
  max-width: 1200px;
  margin: -30px auto 20px;
  padding: 0 20px;
  position: relative;
  z-index: 10;
}

.filter-b {
  display: flex;
  gap: 10px;
  background: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.filter-bt {
  padding: 8px 18px;
  border: 1px solid #ddd;
  border-radius: 20px;
  background: transparent;
  font-size: 13px;
  color: #666;
  cursor: pointer;
  transition: all 0.3s;
}

.filter-bt:hover { border-color: #C2684A; color: #C2684A; }
.filter-bt.active { background: #C2684A; border-color: #C2684A; color: #fff; }

.products {
  max-width: 1400px;
  margin: 20px auto;
  padding: 0 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .4s ease, transform .4s ease;
}

.card.visible { opacity: 1; transform: translateY(0); }
.card.hiding { opacity: 0; pointer-events: none; display: none; }

.card-i {
  position: relative;
  width: 100%;
  padding-top: 66.67%;
  overflow: hidden;
}

.card-i img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-b { padding: 16px; }

.card-n {
  font: 600 16px sans-serif;
  color: #333;
  margin-bottom: 8px;
}

.card-d {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
}

.company-intro {
  background: #f8f9fa;
  padding: 50px 20px;
}

.intro-container {
  max-width: 1000px;
  margin: 0 auto;
}

.intro-title {
  font: 700 26px sans-serif;
  color: #333;
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 2px solid #C2684A;
}

.intro-content {
  text-align: center;
}

.intro-text {
  font-size: 15px;
  color: #555;
  line-height: 1.8;
  margin-bottom: 20px;
  text-align: justify;
  text-indent: 2em;
}

.intro-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  min-width: 100px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.stat-number {
  display: block;
  font: 700 28px sans-serif;
  color: #C2684A;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: #666;
  margin-top: 5px;
}

.footer {
  text-align: center;
  padding: 30px;
  border-top: 1px solid #eee;
  font-size: 12px;
  color: #999;
}

@media (max-width: 768px) {
  .grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
  .banner { height: 300px; }
  .banner-t { font-size: 24px; }
}

@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
  .banner { height: 200px; }
  .nav-m { gap: 16px; }
  .nav-a { font-size: 12px; }
}