:root{
  --brand-50:#FFFBEB;
  --brand-100:#FEF3C7;
  --brand-200:#FDE68A;
  --brand-300:#FCD34D;
  --brand-400:#FBBF24;
  --brand-500:#F59E0B;
  --brand-600:#D97706;
  --brand-700:#B45309;
  --brand-800:#92400E;
  --text-900:#111827;
  --text-700:#374151;
  --text-white:#fff;
  --border-200:#E5E7EB;
  --bg-50:#F9FAFB;
  --shadow:0 12px 30px rgba(17,24,39,.10);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text-900);background:#fff;line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{width:min(1200px,94vw);margin:0 auto;padding:0 16px}

/* Header - 参照xipigou导航风格，黄色背景 */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:linear-gradient(135deg,var(--brand-500),var(--brand-600));box-shadow:0 2px 20px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:0;height:70px}
.brand{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:800;color:#fff;letter-spacing:1px}
.brand-logo{width:50px;height:50px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--brand-600);font-weight:900;box-shadow:0 4px 15px rgba(0,0,0,.2)}
.nav{display:flex;align-items:center;gap:0}
.nav a{padding:24px 20px;color:rgba(255,255,255,.85);font-weight:600;font-size:15px;transition:.2s;position:relative}
.nav a:hover,.nav a.active{color:#fff;background:rgba(255,255,255,.1)}
.nav a small{display:block;font-size:11px;font-weight:400;opacity:.7;margin-top:2px}
.header-lang{display:flex;gap:8px;margin-left:20px}
.header-lang a{padding:6px 12px;border-radius:4px;font-size:13px;color:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.3)}
.header-lang a:hover{background:rgba(255,255,255,.15);color:#fff}

/* Hero Banner - 大Banner区域 */
.hero-banner{padding-top:70px;background:linear-gradient(135deg,var(--brand-500) 0%,var(--brand-400) 50%,var(--brand-500) 100%);min-height:500px;display:flex;align-items:center;position:relative;overflow:hidden}
.hero-banner::before{content:'';position:absolute;top:-50%;right:-20%;width:80%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.1) 0%,transparent 60%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:60px 0}
.hero-content{color:#fff}
.hero-slogan{font-size:18px;opacity:.9;margin-bottom:16px;letter-spacing:2px}
.hero-title{font-size:48px;font-weight:800;line-height:1.2;margin-bottom:20px;text-shadow:0 2px 10px rgba(0,0,0,.15)}
.hero-desc{font-size:16px;line-height:1.8;opacity:.9;margin-bottom:30px}
.hero-btns{display:flex;gap:16px}
.hero-images{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:10px;max-width:400px;margin-left:auto}
.hero-img{border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.hero-img img{width:100%;height:100%;object-fit:cover}
.hero-img.large{grid-column:span 2;grid-row:span 2}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:30px;font-weight:600;font-size:15px;cursor:pointer;transition:.2s;border:none}
.btn-white{background:#fff;color:var(--brand-600);box-shadow:0 4px 20px rgba(0,0,0,.15)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,0,0,.2)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-primary{background:var(--brand-500);color:#fff;box-shadow:0 4px 20px rgba(245,158,11,.4)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px)}

/* Section Common */
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:50px}
.section-label{display:inline-block;font-size:14px;color:var(--brand-600);font-weight:600;letter-spacing:3px;margin-bottom:10px}
.section-title{font-size:32px;font-weight:700;color:var(--text-900);margin-bottom:10px}
.section-title-en{font-size:14px;color:var(--text-700);letter-spacing:2px}
.section-line{width:60px;height:3px;background:var(--brand-500);margin:20px auto 0;border-radius:2px}

/* Products Section */
.products-section{background:#fff}
.products-intro{max-width:800px;margin:0 auto 40px;text-align:center;color:var(--text-700);line-height:1.8}
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.08);transition:.3s;cursor:pointer}
.product-card:hover{transform:translateY(-8px);box-shadow:0 12px 40px rgba(0,0,0,.15)}
.product-img{height:200px;background:linear-gradient(135deg,#f5f5f5,#e8e8e8);display:flex;align-items:center;justify-content:center;overflow:hidden}
.product-img img{width:100%;height:100%;object-fit:cover;transition:.3s}
.product-card:hover .product-img img{transform:scale(1.05)}
.product-info{padding:20px}
.product-name{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text-900)}
.product-desc{font-size:13px;color:var(--text-700);line-height:1.6}
.products-more{text-align:center;margin-top:40px}

/* News Section - 黄色背景 */
.news-section{background:linear-gradient(135deg,var(--brand-500),var(--brand-600));padding:80px 0}
.news-section .section-title{color:#fff}
.news-section .section-title-en{color:rgba(255,255,255,.7)}
.news-section .section-line{background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.15);transition:.3s}
.news-card:hover{transform:translateY(-5px)}
.news-cover{height:180px;background:#f0f0f0;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-body{padding:24px}
.news-title{font-size:18px;font-weight:600;margin-bottom:12px;color:var(--text-900);line-height:1.4}
.news-excerpt{font-size:14px;color:var(--text-700);line-height:1.7;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-date{font-size:13px;color:var(--brand-600)}

/* About Section */
.about-section{background:#fff;padding:80px 0}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-images{position:relative}
.about-img-main{border-radius:20px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.15)}
.about-img-main img{width:100%;height:400px;object-fit:cover}
.about-img-sub{position:absolute;bottom:-30px;right:-30px;width:200px;border-radius:16px;overflow:hidden;box-shadow:0 10px 40px rgba(0,0,0,.2);border:4px solid #fff}
.about-img-sub img{width:100%;height:150px;object-fit:cover}
.about-content h2{font-size:36px;font-weight:700;margin-bottom:20px;color:var(--text-900)}
.about-content h2 span{color:var(--brand-500)}
.about-content p{color:var(--text-700);line-height:1.9;margin-bottom:16px;font-size:15px}
.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px;padding-top:30px;border-top:1px solid var(--border-200)}
.stat-item{text-align:center}
.stat-num{font-size:36px;font-weight:800;color:var(--brand-500)}
.stat-num span{font-size:18px}
.stat-label{font-size:14px;color:var(--text-700);margin-top:5px}

/* Footer - 黄色背景 */
.footer{background:linear-gradient(135deg,var(--brand-600),var(--brand-700));color:#fff;padding:50px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:700;margin-bottom:20px}
.footer-brand .brand-logo{width:44px;height:44px;font-size:18px}
.footer-desc{font-size:14px;line-height:1.8;opacity:.85;margin-bottom:20px}
.footer-title{font-size:16px;font-weight:600;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-title::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#fff}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;opacity:.8;transition:.2s}
.footer-links a:hover{opacity:1;padding-left:5px}
.footer-contact p{font-size:14px;opacity:.85;margin-bottom:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:40px;padding-top:20px;text-align:center;font-size:13px;opacity:.7}

/* Responsive */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-images{margin:40px auto 0;max-width:350px}
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .about-images{margin-bottom:60px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .header-inner{padding:0 10px}
  .nav a{padding:20px 12px;font-size:13px}
  .nav a small{display:none}
  .hero-title{font-size:32px}
  .products-grid{grid-template-columns:1fr}
  .section{padding:50px 0}
}
@media (max-width:480px){
  .nav{display:none}
  .hero-banner{min-height:400px}
  .hero-title{font-size:28px}
  .hero-images{grid-template-columns:repeat(2,1fr)}
}