*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --red:#E5252A;--red-dark:#C41E22;--red-light:#FF5252;
  --red-50:#FFEBEE;--red-100:#FFCDD2;
  --gray-900:#1A1A2E;--gray-800:#222244;--gray-700:#33334D;
  --gray-600:#555570;--gray-500:#7C7C95;--gray-400:#B0B0C0;
  --gray-300:#D5D5E0;--gray-200:#E8E8F0;--gray-100:#F5F5FA;--gray-50:#FAFAFC;
  --white:#FFF;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);--shadow-md:0 4px 24px rgba(0,0,0,.08);
  --shadow-lg:0 12px 48px rgba(0,0,0,.12);--shadow-xl:0 24px 64px rgba(0,0,0,.16);
  --radius:12px;--radius-lg:20px;--radius-xl:28px;
  --max-w:1280px;--transition:.35s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--gray-700);background:var(--gray-50);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit} 
ul{list-style:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
 /* ========== Navbar ========== */
.navbar{
  position:fixed;top:0;left:0;width:100%;height:110px;
  display:flex;align-items:center;z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:0 1px 0 rgba(0,0,0,.06);
  transition:var(--transition);
}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.08)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:42px;auto}
.nav-hotline{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--red);padding-left:12px}
.nav-hotline .hotline-label{font-size:11px;color:var(--gray-500);font-weight:500;letter-spacing:1px}
.nav-hotline .hotline-number{font-size:18px;font-weight:800;color:var(--red);letter-spacing:.5px;line-height:1}
.nav-logo span{font-size:18px;font-weight:700;color:var(--gray-900);letter-spacing:.5px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:8px 18px;border-radius:8px;font-size:15px;font-weight:500;
  color:var(--gray-600);transition:var(--transition);position:relative;
}
.nav-links a:hover{color:var(--red);background:var(--red-50)}
.nav-links a.active{color:var(--red);font-weight:600}
.nav-links a.active::after{
  content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);
  width:20px;height:3px;background:var(--red);border-radius:2px;
}
.nav-cta{
  padding:10px 24px;border-radius:8px;background:var(--red);color:#fff!important;
  font-weight:600;font-size:14px;transition:var(--transition);box-shadow:0 4px 12px rgba(229,37,42,.3);
}
.nav-cta:hover{background:var(--red-dark);background:var(--red-dark)!important;box-shadow:0 6px 20px rgba(229,37,42,.4)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--gray-700);border-radius:2px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-menu{position:fixed;top:72px;left:0;width:100%;height:calc(100vh - 72px);background:#fff;z-index:999;display:none;flex-direction:column;padding:24px;gap:8px;overflow-y:auto}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:14px 16px;border-radius:10px;font-size:16px;font-weight:500;color:var(--gray-700);transition:var(--transition)}
.mobile-menu a:hover{background:var(--red-50);color:var(--red)}

/* Page Header */
.page-header{padding:140px 0 40px;background:linear-gradient(135deg,#1A1A2E 0%,#16213E 50%,#0F3460 100%);position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(229,37,42,.15) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(255,82,82,.08) 0%,transparent 40%)}
.page-header .container{position:relative;z-index:2;text-align:center}
.page-header h1{font-size:42px;font-weight:800;color:#fff;letter-spacing:-1px;margin-bottom:12px}
.page-header h1 .gradient-text{background:linear-gradient(135deg,#FF5252 0%,#FF8A80 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.page-header p{font-size:17px;color:rgba(255,255,255,.6);max-width:600px;margin:0 auto}

/* Search */
.search-box{max-width:500px;margin:24px auto 0;position:relative}
.search-box input{width:100%;padding:14px 20px 14px 48px;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:#fff;font-size:15px;outline:none;backdrop-filter:blur(10px);transition:var(--transition)}
.search-box input::placeholder{color:rgba(255,255,255,.4)}
.search-box input:focus{border-color:rgba(229,37,42,.5);background:rgba(255,255,255,.12)}
.search-box .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:rgba(255,255,255,.4);font-size:18px}

/* Hero Banner / Poster */
.hero-banner{margin-bottom:40px;border-radius:var(--radius-lg);overflow:hidden;position:relative;min-height:200px;display:block;transition:var(--transition)}
.hero-banner:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.hero-banner img{width:100%;height:100%;object-fit:cover;position:absolute;top:0;left:0}
.hero-banner .banner-overlay{position:relative;z-index:2;padding:40px 48px;background:linear-gradient(90deg,rgba(26,26,46,.85) 0%,rgba(22,33,62,.6) 60%,transparent 100%);min-height:200px;display:flex;flex-direction:column;justify-content:center}
.hero-banner .banner-tag{display:inline-block;padding:4px 14px;background:var(--red);color:#fff;border-radius:50px;font-size:12px;font-weight:600;margin-bottom:12px;align-self:flex-start}
.hero-banner h2{font-size:26px;font-weight:800;color:#fff;margin-bottom:8px}
.hero-banner p{font-size:14px;color:rgba(255,255,255,.7);max-width:400px}

/* Featured Products */
.featured-section{margin-bottom:40px}
.featured-section h3{font-size:20px;font-weight:700;color:var(--gray-900);margin-bottom:16px;text-align:center}
.featured-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.featured-card{background:#fff;border-radius:var(--radius);padding:16px;text-align:center;border:1px solid var(--gray-200);transition:var(--transition);position:relative;overflow:hidden}
.featured-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--red),var(--red-light));transform:scaleX(0);transition:var(--transition)}
.featured-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:var(--red-100)}
.featured-card:hover::before{transform:scaleX(1)}
.featured-card .f-logo{height:44px;margin-bottom:8px;display:flex;align-items:center;justify-content:center}
.featured-card .f-logo img{max-height:44px;max-width:120px;object-fit:contain}
.featured-card h4{font-size:13px;font-weight:600;color:var(--gray-700)}

/* Alphabet Index */
.alpha-section{margin-bottom:40px}
.alpha-bar{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;padding:16px;background:#fff;border-radius:var(--radius);border:1px solid var(--gray-200)}
.alpha-letter{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--gray-600);background:var(--gray-100);cursor:pointer;transition:var(--transition)}
.alpha-letter:hover{background:var(--red-50);color:var(--red)}
.alpha-letter.active{background:var(--red);color:#fff}
.alpha-results{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px}
.alpha-item{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#fff;border-radius:8px;border:1px solid var(--gray-200);font-size:13px;transition:var(--transition)}
.alpha-item:hover{border-color:var(--red-100);box-shadow:var(--shadow-sm);transform:translateX(4px)}
.alpha-item a{color:var(--gray-700);font-weight:500}
.alpha-item a:hover{color:var(--red)}

/* Layout */
.product-section{padding:40px 0 80px}
.product-layout{display:grid;grid-template-columns:220px 1fr;gap:28px;align-items:flex-start}

/* Sidebar - Enhanced */
.sidebar{position:sticky;top:90px;background:linear-gradient(180deg,#fff 0%,var(--gray-50) 100%);border-radius:var(--radius-lg);border:1px solid var(--gray-200);padding:0;box-shadow:var(--shadow-sm);overflow:hidden}
.sidebar-header{padding:16px 20px;background:linear-gradient(135deg,var(--gray-900) 0%,var(--gray-800) 100%);color:#fff}
.sidebar-header h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.sidebar-header h3::before{content:'';width:4px;height:18px;background:var(--red);border-radius:2px}
.sidebar-list{padding:8px}
.sidebar-cat{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:10px;font-size:14px;font-weight:500;color:var(--gray-600);cursor:pointer;transition:var(--transition);margin-bottom:2px;border-left:3px solid transparent}
.sidebar-cat:hover{background:var(--red-50);color:var(--red);border-left-color:var(--red-100)}
.sidebar-cat.active{background:linear-gradient(90deg,var(--red-50) 0%,transparent 100%);color:var(--red);font-weight:600;border-left-color:var(--red)}
.sidebar-cat .count{font-size:11px;background:var(--gray-100);color:var(--gray-500);padding:1px 8px;border-radius:50px;min-width:24px;text-align:center}
.sidebar-cat:hover .count{background:var(--red-100);color:var(--red)}
.sidebar-cat.active .count{background:var(--red);color:#fff}
.sidebar-divider{padding:12px 20px 8px;font-size:11px;font-weight:600;color:var(--gray-400);text-transform:uppercase;letter-spacing:1px}

/* Product Grid */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.product-card{background:#fff;border-radius:var(--radius);padding:20px;transition:var(--transition);border:1px solid var(--gray-200);position:relative;overflow:hidden;display:flex;flex-direction:column}
.product-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:var(--red);transform:scaleY(0);transform-origin:top;transition:var(--transition)}
.product-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--red-100)}
.product-card:hover::before{transform:scaleY(1)}
.product-card .cat-tag{display:inline-block;padding:3px 10px;background:var(--red-50);color:var(--red);border-radius:6px;font-size:11px;font-weight:600;margin-bottom:10px}
.product-card .p-logo{height:48px;margin-bottom:10px;display:flex;align-items:center}
.product-card .p-logo img{max-height:48px;max-width:160px;object-fit:contain}
.product-card h3{font-size:15px;font-weight:700;color:var(--gray-900);margin-bottom:6px}
.product-card h3 a{color:inherit;transition:var(--transition)}
.product-card h3 a:hover{color:var(--red)}
.product-card .p-desc{font-size:12px;color:var(--gray-500);line-height:1.6;flex:1}
.product-card .p-link{margin-top:10px;font-size:12px;font-weight:600;color:var(--red);display:inline-flex;align-items:center;gap:4px;transition:var(--transition)}
.product-card .p-link:hover{gap:8px}

/* Category section */
.cat-section{margin-bottom:40px}
.cat-section-header{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.cat-section-header .cat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;background:linear-gradient(135deg,var(--red) 0%,var(--red-light) 100%);color:#fff;box-shadow:0 4px 12px rgba(229,37,42,.2)}
.cat-section-header h2{font-size:20px;font-weight:700;color:var(--gray-900)}
.cat-section-header .cat-count{font-size:13px;color:var(--gray-500)}
 /* ========== Footer ========== */
.footer{background:var(--gray-900);color:rgba(255,255,255,.5);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand img{height:90px;margin-bottom:16px; }
.footer-brand p{font-size:13px;line-height:1.8;margin-bottom:16px;text-align:left}
.footer-social{display:flex;gap:10px;margin-top:16px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);transition:var(--transition);
}
.footer-social a:hover{background:rgba(229,37,42,.2);color:var(--red-light)}
.footer-col h5{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.5px}
.footer-col a{display:block;font-size:13px;padding:5px 0;transition:var(--transition);color:rgba(255,255,255,.5)}
.footer-col a:hover{color:var(--red-light)}
.footer-contact-item{display:flex;align-items:center;gap:8px;font-size:13px;padding:5px 0;color:rgba(255,255,255,.5)}
.footer-contact-item svg{flex-shrink:0;opacity:.7}
.footer-qr-section{margin-top:16px;display:flex;align-items:flex-start;gap:12px}
.footer-qr-img{
  width:88px;height:88px;border-radius:8px;overflow:hidden;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;padding:6px;flex-shrink:0;
}
.footer-qr-img img{width:100%;height:100%;object-fit:contain}
.footer-qr-text{font-size:12px;line-height:1.6;color:rgba(255,255,255,.5);padding-top:8px;text-align:left}
.footer-qr-text strong{color:rgba(255,255,255,.7);font-size:13px;display:block;margin-bottom:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
}
.footer-bottom p{font-size:12px;color:rgba(255,255,255,.4)}
.footer-bottom a{color:rgba(255,255,255,.4);font-size:12px;transition:var(--transition)}
.footer-bottom a:hover{color:var(--red-light)}

/* Scroll to top */
.scroll-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;border-radius:50%;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;border:none;z-index:100;opacity:0;transform:translateY(20px);transition:var(--transition);box-shadow:0 8px 24px rgba(229,37,42,.3)}
.scroll-top.visible{opacity:1;transform:translateY(0)}
.scroll-top:hover{background:var(--red-dark)}

/* Animations */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:1024px){
  .product-layout{grid-template-columns:1fr}
  .sidebar{position:static;display:flex;flex-wrap:wrap;gap:8px}
  .sidebar h3{width:100%}
  .sidebar-cat{flex:1;min-width:120px;white-space:nowrap}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .page-header h1{font-size:28px}
  .page-header p{font-size:14px}
  .product-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
}