/* 全局重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: #333; line-height: 1.6; background: #fff; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }

/* 顶部导航栏 */
.site-header { border-bottom: 1px solid #eaeaea; position: sticky; top: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(5px); z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: #111; letter-spacing: -0.5px; }
.logo svg { width: 32px; height: 32px; }
.nav a { margin-left: 32px; color: #555; font-weight: 500; font-size: 15px; }
.nav a.active, .nav a:hover { color: #0a7c5a; }
.nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* 首屏 Banner */
.hero { padding: 120px 0; text-align: center; background: #f4f8f6; }
.hero h1 { font-size: 48px; color: #111; margin-bottom: 20px; letter-spacing: -1px; }
.hero p { color: #555; font-size: 18px; margin-bottom: 40px; max-width: 700px; margin-left: auto; margin-right: auto; }
.hero-btns { display: flex; gap: 16px; justify-content: center; }
.btn { display: inline-block; padding: 14px 32px; border-radius: 4px; font-weight: 600; font-size: 16px; cursor: pointer; border: none; }
.btn-primary { background: #0a7c5a; color: #fff; }
.btn-primary:hover { background: #086348; }
.btn-outline { border: 2px solid #0a7c5a; color: #0a7c5a; }
.btn-outline:hover { background: #0a7c5a; color: #fff; }

/* 通用区块 */
.section { padding: 80px 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.card { padding: 32px; border: 1px solid #eaeaea; border-radius: 8px; transition: 0.3s; }
.card:hover { box-shadow: 0 10px 30px rgba(0,0,0,0.05); border-color: #0a7c5a; }
.card h3 { margin-bottom: 12px; font-size: 20px; color: #111; }
.card p { color: #666; font-size: 15px; }

/* 产品中心列表样式 */
.page-header { padding: 80px 0 40px; background: #fdfaf6; border-bottom: 1px solid #eaeaea; }
.page-header h1 { font-size: 42px; font-family: Georgia, serif; color: #1a1a1a; }
.page-header p { color: #777; margin-top: 10px; font-size: 16px; }
.category-nav { display: flex; gap: 20px; padding: 30px 0; overflow-x: auto; border-bottom: 1px solid #eaeaea; margin-bottom: 40px; }
.category-nav a { font-weight: 600; font-size: 14px; color: #555; text-transform: uppercase; letter-spacing: 1px; white-space: nowrap; }
.category-nav a:hover { color: #b04a32; }
.product-group { margin-bottom: 80px; }
.product-group h2 { font-family: Georgia, serif; font-size: 32px; margin-bottom: 8px; }
.product-group .desc { color: #777; margin-bottom: 24px; font-size: 15px; }
.product-list { border-top: 1px solid #eaeaea; }
.product-item { display: flex; align-items: center; padding: 20px 0; border-bottom: 1px solid #eaeaea; }
.product-item:hover { background: #fafafa; padding-left: 10px; padding-right: 10px; border-bottom-color: #b04a32; }
.item-idx { width: 40px; color: #b04a32; font-size: 13px; font-weight: 700; }
.item-name { flex: 1; font-weight: 700; font-size: 18px; color: #1a1a1a; font-family: Georgia, serif; }
.item-desc { width: 250px; color: #888; font-size: 13px; }
.item-arrow { color: #b04a32; font-size: 20px; }

/* 数据表格 */
.data-table { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 15px; }
.data-table th, .data-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid #eaeaea; }
.data-table th { background: #fdfaf6; color: #1a1a1a; font-family: Georgia, serif; }
.data-table td:first-child { font-weight: 600; color: #444; }

/* 联系我们表单 */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; font-size: 14px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 4px; font-family: inherit; }
.form-group textarea { height: 120px; resize: vertical; }

/* 底部 Footer */
.site-footer { padding: 60px 0 30px; background: #111; color: #aaa; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-end; border-top: 1px solid #333; padding-top: 30px; }
.footer-info p { margin-bottom: 6px; }
.footer-info strong { color: #fff; font-size: 16px; }

/* 悬浮 WhatsApp 按钮 (针对东南亚/中东市场必备) */
.whatsapp-float { position: fixed; bottom: 30px; right: 30px; background: #25D366; color: white; border-radius: 50px; padding: 12px 24px; font-weight: bold; display: flex; align-items: center; gap: 10px; box-shadow: 0 4px 12px rgba(37,211,102,0.4); z-index: 999; font-size: 15px; }
.whatsapp-float:hover { background: #1ebe5d; transform: translateY(-3px); color: white; }
.whatsapp-float svg { width: 24px; height: 24px; fill: currentColor; }

/* 移动端适配 */
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; border-bottom: 1px solid #eaeaea; box-shadow: 0 5px 10px rgba(0,0,0,0.05); }
  .nav.open { display: flex; }
  .nav a { margin: 0; padding: 16px 24px; border-top: 1px solid #f4f4f4; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 32px; }
  .hero-btns { flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  .item-desc { display: none; }
  .data-table { display: block; overflow-x: auto; white-space: nowrap; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .whatsapp-float { bottom: 20px; right: 20px; padding: 10px 18px; font-size: 14px; }
}