/* 个旧锡器 - 银色+灰色主题 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Microsoft YaHei', sans-serif; color: #333; line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Hero */
.hero-silver { background: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 50%, #808080 100%); min-height: 100vh; display: flex; flex-direction: column; }
.nav-metal { display: flex; justify-content: space-between; align-items: center; padding: 20px 40px; background: rgba(128,128,128,0.2); }
.logo { font-size: 1.5rem; font-weight: bold; color: #333; letter-spacing: 2px; }
.nav-links { list-style: none; display: flex; gap: 30px; }
.nav-links a { text-decoration: none; color: #333; font-weight: 500; }
.hero-content { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 0 20px; }
.hero-content h1 { font-size: 3rem; color: #333; margin-bottom: 20px; letter-spacing: 3px; }
.hero-content p { font-size: 1.3rem; color: #555; margin-bottom: 30px; }
.btn { display: inline-block; padding: 14px 40px; background: #555; color: #fff; text-decoration: none; border-radius: 4px; font-weight: bold; transition: 0.3s; border: 2px solid #555; }
.btn:hover { background: #333; border-color: #333; }
.btn-silver { background: linear-gradient(135deg, #c0c0c0, #e8e8e8); color: #333; border: 2px solid #999; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }

/* Intro Metal */
.intro-metal { padding: 80px 0; background: #f5f5f5; }
.intro-metal h2 { text-align: center; font-size: 2.2rem; color: #333; margin-bottom: 30px; letter-spacing: 3px; }
.intro-metal p { max-width: 800px; margin: 0 auto; text-align: center; color: #555; font-size: 1.1rem; }

/* Catalog */
.catalog { padding: 80px 0; background: #fff; }
.catalog h2 { text-align: center; font-size: 2.2rem; color: #333; margin-bottom: 50px; letter-spacing: 3px; }
.catalog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; }
.catalog-card { background: linear-gradient(135deg, #f8f8f8, #e8e8e8); padding: 30px; border-radius: 8px; text-align: center; border: 1px solid #ccc; transition: 0.3s; }
.catalog-card:hover { background: linear-gradient(135deg, #e8e8e8, #d0d0d0); box-shadow: 0 5px 20px rgba(0,0,0,0.1); }
.catalog-img { font-size: 3.5rem; margin-bottom: 20px; }
.catalog-card h3 { color: #333; margin-bottom: 10px; font-size: 1.2rem; }
.catalog-card .price { font-size: 1.3rem; color: #555; font-weight: bold; margin: 10px 0; }
.catalog-card p { color: #777; font-size: 0.95rem; }

/* Features Metal */
.features-metal { padding: 80px 0; background: #f5f5f5; }
.feature-icons { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.feature-icon-item { text-align: center; padding: 40px 25px; background: #fff; border-radius: 8px; border: 1px solid #ccc; }
.feature-icon-item .icon { font-size: 3rem; margin-bottom: 15px; }
.feature-icon-item h4 { color: #333; margin-bottom: 8px; }
.feature-icon-item p { color: #777; }

/* Footer */
.footer-metal { background: #333; color: #c0c0c0; text-align: center; padding: 30px 0; }
.footer-metal p { margin: 0; letter-spacing: 1px; }

@media (max-width: 768px) {
  .hero-content h1 { font-size: 2rem; }
  .nav-links { display: none; }
  .nav-metal { flex-direction: column; gap: 15px; }
}