:root {
  --walnut: #3E2723; --walnut-light: #5D4037; --walnut-mid: #8D6E63;
  --cream: #F5F0EB; --cream-dark: #E8DDD3; --white: #FFFFFF;
  --text: #2C2416; --text-light: #6B5E52; --gold: #B8976A;
  --max-width: 1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--white);line-height:1.8;font-size:16px}

/* Nav */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--cream-dark);padding:0 24px}
.nav-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-brand{font-size:20px;font-weight:700;color:var(--walnut);letter-spacing:2px;text-decoration:none}
.nav-links{display:flex;gap:32px;list-style:none}
.nav-links a{text-decoration:none;color:var(--text-light);font-size:14px;transition:color 0.2s}
.nav-links a:hover{color:var(--walnut)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;width:36px;height:36px;justify-content:center}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--walnut);transition:all 0.3s;border-radius:1px}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mobile{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(10px);z-index:99;padding:24px;flex-direction:column;gap:8px}
.nav-mobile.active{display:flex}
.nav-mobile a{display:block;padding:16px 8px;font-size:17px;color:var(--walnut);text-decoration:none;border-bottom:1px solid var(--cream-dark);letter-spacing:1px}
.nav-mobile a:hover{color:var(--gold)}

/* Header */
.page-header{margin-top:64px;padding:80px 24px 48px;background:var(--cream);text-align:center}
.page-header h1{font-size:clamp(24px,4vw,36px);font-weight:300;color:var(--walnut);letter-spacing:3px;margin-bottom:12px}
.page-header p{font-size:16px;color:var(--text-light);max-width:640px;margin:0 auto}

/* Breadcrumb */
.breadcrumb{max-width:var(--max-width);margin:0 auto;padding:24px 24px 0;font-size:13px;color:var(--text-light)}
.breadcrumb a{color:var(--walnut-mid);text-decoration:none}
.breadcrumb a:hover{color:var(--walnut)}

/* 软包选配专区 Banner */
.selector-banner{max-width:var(--max-width);margin:0 auto 32px;padding:0 24px}
.sb-inner{background:linear-gradient(135deg,var(--walnut) 0%,#5D4037 100%);border-radius:4px;padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.sb-text h3{color:var(--cream);font-size:20px;font-weight:500;letter-spacing:1px;margin-bottom:6px}
.sb-text p{color:rgba(255,255,255,0.65);font-size:13px}
.sb-btn{display:inline-block;padding:10px 28px;background:var(--cream);color:var(--walnut);text-decoration:none;border-radius:2px;font-size:14px;letter-spacing:1px;font-weight:600;transition:all 0.2s;white-space:nowrap}
.sb-btn:hover{background:var(--gold);color:var(--walnut)}

/* Filters */
.product-filters{max-width:var(--max-width);margin:0 auto 40px;padding:0 24px}
.filter-group{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:16px}
.filter-label{font-size:14px;font-weight:600;color:var(--walnut);min-width:60px}
.filter-btn{padding:8px 18px;border:1px solid var(--cream-dark);border-radius:2px;background:var(--white);color:var(--text-light);font-size:13px;cursor:pointer;transition:all 0.2s;font-family:inherit;letter-spacing:1px}
.filter-btn:hover{border-color:var(--walnut-mid);color:var(--walnut)}
.filter-btn.active{background:var(--walnut);color:var(--cream);border-color:var(--walnut)}

/* Grid */
.product-grid{max-width:var(--max-width);margin:0 auto;padding:0 24px 80px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:var(--white);border:1px solid var(--cream-dark);border-radius:2px;overflow:hidden;transition:box-shadow 0.3s;display:flex;flex-direction:column}
a.product-card{text-decoration:none;color:inherit}
.product-card:hover{box-shadow:0 4px 24px rgba(0,0,0,0.06)}
.product-img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.product-info{padding:24px;flex:1;display:flex;flex-direction:column}
.product-name{font-size:17px;font-weight:500;color:var(--walnut);letter-spacing:1px;margin-bottom:8px}
.product-desc{font-size:14px;color:var(--text-light);line-height:1.7;margin-bottom:16px;flex:1}
.product-tags{display:flex;flex-wrap:wrap;gap:8px}
.product-tag{padding:3px 10px;font-size:11px;border-radius:2px;letter-spacing:1px;background:var(--cream);color:var(--walnut-light)}
.product-tag.gold{background:var(--walnut);color:var(--cream)}

/* CTA */
.product-cta{text-align:center;padding:60px 24px;background:var(--cream);margin-top:40px}
.product-cta h3{font-size:20px;color:var(--walnut);margin-bottom:12px;font-weight:500}
.product-cta p{color:var(--text-light);margin-bottom:24px;font-size:15px}
.product-cta a{display:inline-block;padding:14px 48px;background:var(--walnut);color:var(--white);text-decoration:none;border-radius:2px;font-size:15px;letter-spacing:2px;transition:background 0.2s}
.product-cta a:hover{background:var(--walnut-light)}

/* Footer */
footer{background:#1A1210;color:rgba(255,255,255,0.4);padding:48px 24px;text-align:center;font-size:13px}
footer .brand{color:var(--cream);font-size:18px;font-weight:700;letter-spacing:2px;margin-bottom:12px}

/* Responsive */
@media(max-width:1024px){.product-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){
  .nav-links{display:none}.nav-toggle{display:flex}
  nav{padding:0 16px}.nav-inner{height:56px}.nav-brand{font-size:18px}
  .page-header{margin-top:56px;padding:48px 16px 32px}
  .product-grid{grid-template-columns:1fr;padding:0 16px 64px;gap:20px}
  .product-info{padding:20px}
  .product-name{font-size:16px}
  .product-desc{font-size:13px}
  .filter-btn{padding:6px 12px;font-size:12px}
  footer{padding:36px 16px}
}
@media(max-width:480px){
  .page-header h1{font-size:22px}
  .filter-label{width:100%;margin-bottom:4px}
}