/* ============================================================
   雅迪高（Yadigao）五金配件公司 - 企业级官网样式表
   Version: 2.0 | Primary: 红色 #c41230 | 蓝色 #1a3a6b
   ============================================================ */

/* ============================================================
   1. CSS 变量
   ============================================================ */
:root {
    --primary: #c41230;
    --primary-dark: #a00e28;
    --primary-light: #e8455a;
    --blue: #1a3a6b;
    --blue-dark: #122a50;
    --dark: #333;
    --gray: #666;
    --gray-light: #999;
    --bg: #f5f5f5;
    --white: #fff;
    --border: #e0e0e0;
    --border-light: #eee;
    --font: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    --header-h: 72px;
    --max-w: 1200px;
    --radius: 4px;
    --radius-lg: 8px;
    --shadow: 0 2px 12px rgba(0,0,0,.08);
    --shadow-hover: 0 4px 20px rgba(0,0,0,.15);
    --t: all .3s ease;
}

/* ============================================================
   2. Reset
   ============================================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--font);font-size:14px;color:var(--dark);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;min-width:320px}
ol,ul{list-style:none}
a{text-decoration:none;color:inherit;transition:var(--t)}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none;border:none;background:none}
button{cursor:pointer}
table{border-collapse:collapse;border-spacing:0}
h1,h2,h3,h4,h5,h6{font-weight:400;line-height:1.4}
p{margin-bottom:1em}

/* ============================================================
   3. Utilities
   ============================================================ */
.container{max-width:var(--max-w);margin:0 auto;padding:0 15px}
.text-center{text-align:center}
.text-left{text-align:left}
.text-right{text-align:right}

.section-title{text-align:center;margin-bottom:20px}
.section-title h2{font-size:30px;color:var(--dark);font-weight:700;margin-bottom:8px;position:relative;display:inline-block}
.section-title h2::after{content:"";position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:var(--primary)}
.section-subtitle{font-size:15px;color:var(--gray);margin-bottom:30px;text-align:center}

/* Buttons */
.btn{display:inline-block;padding:10px 28px;font-size:14px;border-radius:var(--radius);transition:var(--t);text-align:center;cursor:pointer;line-height:1.5;font-weight:500}
.btn-primary{background:var(--primary);color:var(--white);border:1px solid var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:var(--white)}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:var(--white)}

/* ============================================================
   4. Header & Navigation
   ============================================================ */
.header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);background:var(--white);z-index:1000;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}

/* Logo */
.logo{flex-shrink:0;display:flex;align-items:center}
.logo-text{font-size:20px;font-weight:700;color:var(--blue)}
.logo-text small{font-size:12px;font-weight:400;color:var(--gray);margin-left:4px}

/* Nav */
.nav{display:flex;align-items:center}
.nav-list{display:flex;align-items:center}
.nav-item{position:relative;margin:0 2px}
.nav-link{display:block;padding:0 18px;height:var(--header-h);line-height:var(--header-h);font-size:15px;color:var(--dark);font-weight:500;transition:var(--t);position:relative}
.nav-link::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:var(--primary);transition:var(--t)}
.nav-link:hover,.nav-link.active{color:var(--primary)}
.nav-link:hover::after,.nav-link.active::after{width:100%}

/* Header Phone */
.header-phone{display:flex;align-items:center;flex-shrink:0;margin-left:20px}
.header-phone .phone-icon{width:36px;height:36px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-right:10px;color:var(--white);font-size:16px}
.header-phone .phone-number{font-size:18px;font-weight:700;color:var(--primary)}

/* Hamburger */
.hamburger{display:none;flex-direction:column;justify-content:space-between;width:28px;height:20px;cursor:pointer;z-index:1002;padding:0;background:none;border:none}
.hamburger-line{display:block;width:100%;height:2px;background:var(--dark);transition:var(--t);border-radius:2px}
.hamburger.active .hamburger-line:nth-child(1){transform:translateY(9px) rotate(45deg)}
.hamburger.active .hamburger-line:nth-child(2){opacity:0}
.hamburger.active .hamburger-line:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

/* Nav Overlay */
.nav-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:998}
.nav-overlay.active{display:block}

/* Mobile nav */
@media(max-width:991px){
    .hamburger{display:flex}
    .nav{position:fixed;top:0;right:-280px;width:280px;height:100vh;background:var(--white);box-shadow:-2px 0 10px rgba(0,0,0,.1);transition:right .3s ease;z-index:999;padding-top:60px;flex-direction:column;align-items:stretch}
    .nav.active{right:0}
    .nav-list{flex-direction:column;width:100%}
    .nav-item{margin:0}
    .nav-link{height:auto;line-height:1;padding:14px 20px;border-bottom:1px solid var(--border-light)}
    .nav-link::after{display:none}
    .header-phone{display:none}
}

/* ============================================================
   5. Banner
   ============================================================ */
.banner{margin-top:var(--header-h);position:relative;overflow:hidden}
.banner-slider{position:relative;width:100%;height:520px;overflow:hidden}
.banner-slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity 1s ease;z-index:1}
.banner-slide.active{opacity:1;z-index:2}
.banner-placeholder{width:100%;height:100%;display:flex;align-items:center;position:relative}
.banner-placeholder::before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(to right,rgba(26,58,107,.75),rgba(0,0,0,.3));z-index:1}
.banner-bg-1{background:linear-gradient(135deg,#1a3a6b,#2a5a9b)}
.banner-bg-2{background:linear-gradient(135deg,#c41230,#e8455a)}
.banner-bg-3{background:linear-gradient(135deg,#122a50,#1a3a6b)}
.banner-content{position:relative;z-index:3;color:var(--white);padding:0 15px}
.banner-title{font-size:42px;font-weight:700;margin-bottom:15px;line-height:1.3;animation:fadeInUp .8s ease}
.banner-desc{font-size:18px;margin-bottom:30px;opacity:.9;max-width:600px;animation:fadeInUp .8s ease .2s both}

.banner-dots{position:absolute;bottom:25px;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:10px}
.banner-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:var(--t);border:2px solid transparent;padding:0}
.banner-dot.active{background:var(--primary);border-color:var(--white);transform:scale(1.2)}

.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:10;width:50px;height:50px;background:rgba(255,255,255,.2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:20px;cursor:pointer;transition:var(--t);border:2px solid rgba(255,255,255,.4)}
.banner-arrow:hover{background:var(--primary);border-color:var(--primary)}
.banner-arrow-left{left:30px}
.banner-arrow-right{right:30px}

/* ============================================================
   6. Homepage - Category Section
   ============================================================ */
.category-section{padding:60px 0;background:var(--bg)}
.category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;background:transparent}
.category-card{background:transparent;transition:var(--t);text-align:center;display:block;padding:30px 10px 25px;position:relative}
.category-card::after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:40px;background:var(--border-light)}
.category-card:last-child::after{display:none}
.category-card:hover{color:var(--dark)}
.category-card:hover .category-name{color:var(--primary)}
.category-name-en{display:block;font-size:12px;font-weight:400;color:var(--gray-light);margin-top:2px;text-transform:capitalize}
.category-card:hover .category-name-en{color:var(--primary)}
.category-img-placeholder{width:120px;height:120px;margin:0 auto 12px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--gray);border-radius:var(--radius);overflow:hidden}
.category-name{padding:0;font-size:16px;font-weight:600;color:var(--dark);transition:var(--t)}

/* ============================================================
   7. Homepage - About Section
   ============================================================ */
.about-section{padding:70px 0;background:var(--bg)}
.about-wrapper{display:flex;align-items:center;gap:50px}
.about-left{flex:1}
.about-left .section-title{text-align:left;margin-bottom:20px}
.about-left .section-title h2::after{left:0;transform:none}
.about-intro{font-size:14px;color:var(--gray);line-height:1.8;margin-bottom:20px}
.about-cards{flex:1;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.about-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;transition:var(--t);text-align:center;display:block;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.about-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);color:var(--dark)}
.about-card-img-placeholder{width:100%;height:180px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--gray);transition:transform .5s ease}
.about-card:hover .about-card-img-placeholder{transform:scale(1.05)}
.about-card h3{padding:12px;font-size:16px;font-weight:600;color:var(--dark)}
.about-card p{padding:0 12px 15px;font-size:13px;color:var(--gray)}
.about-card:hover h3{color:var(--primary)}

/* ============================================================
   8. Homepage - Brand Section
   ============================================================ */
.brand-section{padding:60px 0;background:var(--white)}
.brand-list{display:flex;justify-content:center;flex-wrap:wrap;gap:30px}
.brand-item{text-align:center;transition:var(--t);cursor:pointer}
.brand-item:hover{transform:translateY(-3px)}
.brand-placeholder{width:140px;height:80px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:600;color:var(--gray);margin-bottom:8px;transition:var(--t)}
.brand-item:hover .brand-placeholder{border-color:var(--blue);color:var(--blue)}
.brand-name{font-size:14px;color:var(--dark)}

/* ============================================================
   9. Homepage - Product Section
   ============================================================ */
.product-section{padding:60px 0;background:var(--bg)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.06);transition:var(--t);display:block}
.product-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-5px);color:var(--dark)}
.product-img-placeholder{width:100%;height:220px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:#ccc;transition:transform .5s ease}
.product-card:hover .product-img-placeholder{transform:scale(1.05)}
.product-info{padding:15px}
.product-name{font-size:15px;font-weight:600;color:var(--dark);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--t)}
.product-card:hover .product-name{color:var(--primary)}
.product-model{font-size:12px;color:var(--gray-light)}
.product-more{text-align:center;margin-top:35px}

/* ============================================================
   10. Homepage - News Section
   ============================================================ */
.news-section{padding:60px 0;background:var(--white)}
.news-wrapper{display:flex;gap:30px}
.news-featured{flex:1;position:relative;border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;display:block}
.news-featured:hover{color:var(--white)}
.news-featured-img-placeholder{width:100%;height:380px;background:linear-gradient(135deg,var(--blue),var(--blue-dark));display:flex;align-items:flex-end;transition:transform .5s ease}
.news-featured:hover .news-featured-img-placeholder{transform:scale(1.03)}
.news-featured-content{position:absolute;bottom:0;left:0;width:100%;padding:30px;background:linear-gradient(to top,rgba(0,0,0,.8),transparent);color:var(--white)}
.news-featured-title{font-size:20px;font-weight:700;margin-bottom:8px}
.news-date{font-size:13px;opacity:.8}

.news-list{flex:1;display:flex;flex-direction:column;gap:15px}
.news-item{display:flex;gap:15px;padding:15px;border:1px solid var(--border-light);border-radius:var(--radius);transition:var(--t);cursor:pointer}
.news-item:hover{border-color:var(--primary);box-shadow:0 2px 8px rgba(196,18,48,.1)}
.news-item-img-placeholder{width:160px;height:110px;flex-shrink:0;overflow:hidden;border-radius:var(--radius);background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--gray);transition:transform .5s ease}
.news-item:hover .news-item-img-placeholder{transform:scale(1.1)}
.news-item-content{flex:1;display:flex;flex-direction:column;justify-content:space-between}
.news-item-title{font-size:15px;font-weight:600;color:var(--dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--t)}
.news-item:hover .news-item-title{color:var(--primary)}

/* ============================================================
   11. Inner Page Banner
   ============================================================ */
.page-banner{margin-top:var(--header-h);position:relative;height:280px;background:var(--blue);display:flex;align-items:center}
.page-banner::before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(to right,rgba(26,58,107,.85),rgba(0,0,0,.4))}
.page-banner-bg{position:relative;z-index:2;color:var(--white);width:100%}
.page-banner-title{font-size:36px;font-weight:700;margin-bottom:8px}
.page-banner-content{position:relative;z-index:2;color:var(--white)}
.page-banner-content h1{font-size:36px;font-weight:700;margin-bottom:8px}
.breadcrumb{font-size:13px;opacity:.85}
.breadcrumb a{color:var(--white)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb-sep,.breadcrumb .separator{margin:0 8px;color:rgba(255,255,255,.6)}
.breadcrumb-current{color:var(--primary-light)}

/* ============================================================
   12. Products List Page
   ============================================================ */
.products-section{padding:50px 0;background:var(--bg)}

.category-tabs{display:flex;flex-wrap:wrap;gap:10px;background:var(--white);padding:20px;border-radius:var(--radius);margin-bottom:25px;box-shadow:0 1px 4px rgba(0,0,0,.04)}
.cat-tab{padding:8px 22px;font-size:14px;color:var(--dark);border:1px solid var(--border);border-radius:25px;transition:var(--t);cursor:pointer;background:var(--white)}
.cat-tab:hover{border-color:var(--primary);color:var(--primary)}
.cat-tab.active{background:var(--primary);color:var(--white);border-color:var(--primary)}

.products-result-info{font-size:14px;color:var(--gray);margin-bottom:15px}
.products-result-info span{color:var(--primary);font-weight:700}

.products-empty{text-align:center;padding:60px 20px;color:var(--gray);font-size:16px;display:none}

/* Pagination */
.pagination{display:flex;align-items:center;justify-content:center;gap:5px;margin-top:40px;flex-wrap:wrap}
.pagination .page-btn,.pagination span,.pagination a{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 8px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;color:var(--dark);transition:var(--t);background:var(--white);cursor:pointer}
.pagination .page-btn:hover,.pagination a:hover{background:var(--primary);color:var(--white);border-color:var(--primary)}
.pagination .active,.pagination .page-btn.active{background:var(--primary);color:var(--white);border-color:var(--primary)}
.pagination .disabled,.pagination .page-btn.disabled{color:var(--gray-light);cursor:not-allowed;pointer-events:none;opacity:.5}
.pagination-info{text-align:center;font-size:13px;color:var(--gray);margin-top:10px}

/* ============================================================
   13. Product Detail Page
   ============================================================ */
.breadcrumb-bar{background:var(--bg);padding:12px 0;border-bottom:1px solid var(--border-light);font-size:13px;color:var(--gray);margin-top:var(--header-h)}
.breadcrumb-bar a{color:var(--gray)}
.breadcrumb-bar a:hover{color:var(--primary)}
.breadcrumb-bar .separator{margin:0 8px;color:var(--gray-light)}
.breadcrumb-bar .current{color:var(--primary)}

.product-detail-page{padding:30px 0 50px;background:var(--white)}

.pd-wrapper{display:flex;gap:40px;margin-top:30px}
.pd-gallery{flex:0 0 480px;max-width:480px}
.pd-gallery-main{position:relative;width:100%;height:420px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.pd-gallery-main .gallery-img{max-width:100%;max-height:100%;object-fit:contain;display:none}
.pd-gallery-main .gallery-img.active{display:block}
.pd-gallery-main .gallery-media{max-width:100%;max-height:100%;display:none;align-items:center;justify-content:center}
.pd-gallery-main .gallery-media.active{display:flex}
.pd-gallery-main .gallery-media img{max-width:100%;max-height:100%;object-fit:contain}
.pd-gallery-main .gallery-media video{max-width:100%;max-height:100%;object-fit:contain;outline:none}
.pd-gallery-main .gallery-placeholder{font-size:18px;color:var(--gray);text-align:center;padding:20px}
.pd-gallery-main .gallery-placeholder .placeholder-id{font-size:48px;font-weight:700;color:#ccc;display:block;margin-bottom:8px}

.pd-gallery-arrow{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;background:rgba(0,0,0,.35);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);cursor:pointer;transition:var(--t);font-size:16px;z-index:5;border:none}
.pd-gallery-arrow:hover{background:var(--primary)}
.pd-gallery-arrow.prev{left:10px}
.pd-gallery-arrow.next{right:10px}

.pd-gallery-thumbs{display:flex;gap:10px;flex-wrap:wrap}
.pd-gallery-thumbs .thumb-item{width:72px;height:72px;border:2px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:var(--t);opacity:.6;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--gray);flex-shrink:0}
.pd-gallery-thumbs .thumb-item:hover,.pd-gallery-thumbs .thumb-item.active{border-color:var(--primary);opacity:1}
.pd-gallery-thumbs .thumb-item img{width:100%;height:100%;object-fit:cover}
.pd-gallery-thumbs .thumb-video::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:0;height:0;border-style:solid;border-width:5px 0 5px 9px;border-color:transparent transparent transparent var(--white);z-index:2;pointer-events:none}
.pd-gallery-thumbs .thumb-item.thumb-video{position:relative}
.pd-gallery-thumbs .thumb-item.thumb-video::after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:20px;height:20px;background:rgba(0,0,0,.5);border-radius:50%;z-index:1}

.pd-info{flex:1;min-width:0}
.pd-name{font-size:22px;font-weight:700;color:var(--dark);margin-bottom:8px;line-height:1.4}
.pd-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:15px}
.pd-tag{display:inline-block;padding:3px 12px;font-size:12px;border-radius:2px;background:rgba(196,18,48,.08);color:var(--primary);border:1px solid rgba(196,18,48,.2)}
.pd-tag.hot{background:var(--primary);color:var(--white);border-color:var(--primary)}
.pd-summary{font-size:14px;color:var(--gray);line-height:1.8;margin-bottom:18px;padding:15px;background:#f9f9f9;border-radius:var(--radius);border-left:3px solid var(--primary)}
.pd-params-preview{margin-bottom:20px}
.pd-params-preview .param-row{display:flex;padding:7px 0;border-bottom:1px dashed var(--border-light);font-size:14px}
.pd-params-preview .param-label{width:90px;flex-shrink:0;color:#888;font-weight:500}
.pd-params-preview .param-value{color:var(--dark)}
.pd-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.pd-actions .btn-inquiry{display:inline-block;padding:12px 32px;font-size:15px;border-radius:var(--radius);transition:var(--t);text-align:center;cursor:pointer;font-weight:500;background:var(--primary);color:var(--white);border:1px solid var(--primary);text-decoration:none}
.pd-actions .btn-inquiry:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:var(--white)}
.pd-actions .btn-contact{display:inline-block;padding:12px 32px;font-size:15px;border-radius:var(--radius);transition:var(--t);text-align:center;cursor:pointer;font-weight:500;background:transparent;color:var(--primary);border:1px solid var(--primary);text-decoration:none}
.pd-actions .btn-contact:hover{background:var(--primary);color:var(--white)}
.pd-contact{display:flex;align-items:center;gap:12px;margin-top:18px;padding:14px 16px;background:#f9f9f9;border-radius:var(--radius)}
.pd-contact .contact-icon{width:40px;height:40px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:18px;flex-shrink:0}
.pd-contact .contact-text .contact-label{font-size:12px;color:#888}
.pd-contact .contact-text .contact-num{font-size:20px;font-weight:700;color:var(--primary)}
.pd-contact .contact-text .contact-num a{color:var(--primary);text-decoration:none}

.pd-tabs{margin-top:45px;clear:both}
.pd-tabs .tab-nav{display:flex;border-bottom:2px solid var(--border);margin-bottom:25px}
.pd-tabs .tab-nav-item{padding:12px 30px;font-size:16px;font-weight:500;color:var(--gray);cursor:pointer;transition:var(--t);position:relative;background:none;border:none}
.pd-tabs .tab-nav-item::after{content:"";position:absolute;bottom:-2px;left:0;width:100%;height:2px;background:var(--primary);transform:scaleX(0);transition:transform .3s ease}
.pd-tabs .tab-nav-item:hover{color:var(--primary)}
.pd-tabs .tab-nav-item.active{color:var(--primary)}
.pd-tabs .tab-nav-item.active::after{transform:scaleX(1)}
.pd-tabs .tab-pane{display:none;font-size:14px;color:var(--dark);line-height:2}
.pd-tabs .tab-pane.active{display:block}
.pd-tabs .tab-pane p{margin-bottom:12px}
.pd-tabs .tab-pane ul{padding-left:20px;margin-bottom:12px}
.pd-tabs .tab-pane ul li{list-style:disc;margin-bottom:6px}

.spec-table{width:100%;border-collapse:collapse;border:1px solid var(--border)}
.spec-table tr{border-bottom:1px solid var(--border-light)}
.spec-table tr:last-child{border-bottom:none}
.spec-table td{padding:12px 16px;font-size:14px;color:var(--dark);vertical-align:top}
.spec-table .spec-label{width:140px;background:#f9f9f9;font-weight:600;color:#555;white-space:nowrap}
.spec-table .spec-value{color:var(--dark)}

.pd-nav{display:flex;justify-content:space-between;margin-top:40px;padding-top:20px;border-top:1px solid var(--border);flex-wrap:wrap;gap:10px}
.pd-nav a{font-size:14px;color:#555;transition:color .3s ease;max-width:48%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pd-nav a:hover{color:var(--primary)}
.pd-nav .nav-disabled{color:#ccc;cursor:not-allowed;pointer-events:none}

/* ============================================================
   14. About Page
   ============================================================ */
.about-intro-section{padding:50px 0;background:var(--white)}
.about-intro{display:flex;gap:40px;align-items:center}
.about-intro-image{flex:0 0 45%}
.about-intro-img-placeholder{width:100%;height:350px;background:var(--bg);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--gray);box-shadow:var(--shadow)}
.about-intro-text{flex:1}
.about-intro-text h2{font-size:30px;font-weight:700;color:var(--dark);margin-bottom:20px;position:relative;padding-bottom:12px}
.about-intro-text h2::after{content:"";position:absolute;bottom:0;left:0;width:60px;height:3px;background:var(--primary)}
.about-intro-text p{font-size:14px;color:var(--gray);line-height:1.9;margin-bottom:15px}

.honor-section{padding:50px 0;background:var(--bg)}
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.honor-card{background:var(--white);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:var(--t);box-shadow:0 1px 4px rgba(0,0,0,.06)}
.honor-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.honor-icon{width:70px;height:70px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:28px}
.honor-card h4{font-size:16px;font-weight:600;color:var(--dark);margin-bottom:10px}
.honor-card p{font-size:13px;color:var(--gray)}

.equipment-section{padding:50px 0;background:var(--white)}
.equipment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.equipment-card{border-radius:var(--radius);overflow:hidden;position:relative;cursor:pointer}
.equipment-img-placeholder{width:100%;height:240px;background:var(--bg);display:flex;align-items:flex-end;transition:transform .5s ease}
.equipment-card:hover .equipment-img-placeholder{transform:scale(1.05)}
.equipment-overlay{position:absolute;bottom:0;left:0;width:100%;padding:20px;background:linear-gradient(to top,rgba(0,0,0,.7),transparent);color:var(--white)}
.equipment-overlay h4{font-size:16px;font-weight:600}

.company-stats{padding:50px 0;background:var(--blue)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{text-align:center;color:var(--white);padding:30px 20px}
.stat-number{font-size:42px;font-weight:700;margin-bottom:8px}
.stat-number .plus{color:var(--primary-light)}
.stat-label{font-size:15px;opacity:.85}

.culture-section{padding:50px 0;background:var(--bg)}
.culture-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.culture-card{background:var(--white);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:var(--t);box-shadow:0 1px 4px rgba(0,0,0,.06)}
.culture-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.culture-icon{font-size:40px;margin-bottom:15px}
.culture-card h4{font-size:16px;font-weight:600;color:var(--dark);margin-bottom:10px}
.culture-card p{font-size:13px;color:var(--gray);line-height:1.7}

/* ============================================================
   15. News List Page
   ============================================================ */
.news-list-page{padding:50px 0;background:var(--bg)}
.news-list-page .news-item{background:var(--white);margin-bottom:20px}
.news-thumb{flex-shrink:0;display:block}
.news-content{flex:1;display:flex;flex-direction:column;justify-content:space-between}
.news-desc{font-size:13px;color:var(--gray);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--gray-light);margin-top:auto}
.news-read-more{font-size:13px;color:var(--primary);font-weight:500}
.news-read-more:hover{color:var(--primary-dark)}

/* ============================================================
   16. News Detail Page
   ============================================================ */
.news-detail-page{padding:50px 0;background:var(--white)}
.news-detail-wrapper{display:flex;gap:30px}
.news-detail-main{flex:1;max-width:820px}
.news-detail-header{margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid var(--border-light)}
.news-detail-header h1{font-size:24px;font-weight:700;color:var(--dark);margin-bottom:15px;line-height:1.4}
.news-detail-meta{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--gray)}
.news-detail-content{font-size:15px;color:var(--dark);line-height:2}
.news-detail-content p{margin-bottom:20px}
.news-nav{display:flex;justify-content:space-between;margin-top:40px;padding-top:20px;border-top:1px solid var(--border);flex-wrap:wrap;gap:10px}
.news-nav a{font-size:14px;color:var(--gray);transition:var(--t);max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-nav a:hover{color:var(--primary)}

.news-detail-sidebar{width:300px;flex-shrink:0}
.news-detail-sidebar .sidebar-widget{background:var(--white);border-radius:var(--radius);padding:20px;margin-bottom:20px;box-shadow:0 1px 4px rgba(0,0,0,.04)}
.news-detail-sidebar .sidebar-widget h3{font-size:16px;font-weight:600;color:var(--dark);margin-bottom:15px;padding-bottom:10px;border-bottom:2px solid var(--primary);display:inline-block}
.news-detail-sidebar .hot-news-list li{padding:10px 0;border-bottom:1px dashed var(--border-light)}
.news-detail-sidebar .hot-news-list li:last-child{border-bottom:none}
.news-detail-sidebar .hot-news-list li a{font-size:13px;color:var(--dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--t)}
.news-detail-sidebar .hot-news-list li a:hover{color:var(--primary)}
.news-detail-sidebar .hot-news-list li .hot-date{font-size:12px;color:var(--gray-light);margin-top:5px}

/* ============================================================
   17. Contact Page
   ============================================================ */
.contact-page{padding:50px 0;background:var(--bg)}
.contact-info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin-bottom:50px}
.contact-info-card{background:var(--white);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:var(--t);box-shadow:0 1px 4px rgba(0,0,0,.06)}
.contact-info-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.contact-info-card .contact-icon{width:60px;height:60px;margin:0 auto 15px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:24px}
.contact-info-card h4{font-size:16px;font-weight:600;color:var(--dark);margin-bottom:10px}
.contact-info-card p{font-size:13px;color:var(--gray);line-height:1.6}

.contact-wrapper{display:flex;gap:30px}
.contact-form-section{flex:1;background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.contact-form-section h3{font-size:18px;font-weight:600;color:var(--dark);margin-bottom:25px;padding-bottom:15px;border-bottom:2px solid var(--primary)}
.contact-map{flex:1;border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.06)}

.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;color:var(--dark);margin-bottom:8px;font-weight:500}
.form-group label .required{color:var(--primary);margin-left:2px}
.form-control{width:100%;padding:10px 15px;font-size:14px;border:1px solid var(--border);border-radius:var(--radius);color:var(--dark);background:var(--white);transition:var(--t)}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(196,18,48,.1)}
textarea.form-control{resize:vertical;min-height:120px}
.form-row{display:flex;gap:20px}
.form-row .form-group{flex:1}

/* ============================================================
   18. Footer
   ============================================================ */
.footer{background:#1a1a2e;color:#b0b0c0;padding-top:50px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-col h3,.footer-heading{font-size:16px;color:var(--white);font-weight:600;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-col h3::after,.footer-heading::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--primary)}
.footer-logo{font-size:20px;font-weight:700;color:var(--white);margin-bottom:15px}
.footer-desc{font-size:13px;line-height:1.8;margin-bottom:20px}
.footer-contact{list-style:none}
.footer-contact li{font-size:13px;margin-bottom:10px;line-height:1.6}
.contact-label{color:var(--primary);font-weight:500}
.footer-contact a{color:#b0b0c0}
.footer-contact a:hover{color:var(--primary)}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links li a{font-size:13px;color:#b0b0c0;transition:var(--t)}
.footer-links li a:hover{color:var(--primary);padding-left:5px}
.footer-qr{text-align:center}
.qr-placeholder,.footer-qr-placeholder{width:120px;height:120px;margin:0 auto 10px;border:3px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:5px;background:var(--white);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--gray)}
.footer-qr p{font-size:12px;color:#b0b0c0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:12px;color:#808090}

/* ============================================================
   19. Back to Top
   ============================================================ */
.back-to-top{position:fixed;bottom:40px;right:30px;width:44px;height:44px;background:var(--primary);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:999;opacity:0;visibility:hidden;transition:var(--t);box-shadow:0 2px 10px rgba(196,18,48,.3);font-size:18px;border:none}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--primary-dark);transform:translateY(-3px)}

/* ============================================================
   20. Animations
   ============================================================ */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

.fade-in-up,.fade-in-left,.fade-in-right,.fade-in{opacity:0;transition:opacity .6s ease,transform .6s ease}
.fade-in-up{transform:translateY(30px)}.fade-in-up.visible{opacity:1;transform:translateY(0)}
.fade-in-left{transform:translateX(-30px)}.fade-in-left.visible{opacity:1;transform:translateX(0)}
.fade-in-right{transform:translateX(30px)}.fade-in-right.visible{opacity:1;transform:translateX(0)}
.fade-in.visible{opacity:1}

/* ============================================================
   21. Responsive
   ============================================================ */
@media(max-width:1199px){
    :root{--header-h:64px}
    .banner-slider{height:420px}
    .banner-title{font-size:34px}
    .category-grid{grid-template-columns:repeat(4,1fr)}
    .category-card:nth-child(4n)::after{display:none}
    .category-img-placeholder{width:110px;height:110px}
    .category-name{font-size:15px}
    .category-name-en{font-size:11px}
    .product-grid{grid-template-columns:repeat(3,1fr);gap:15px}
    .honor-grid{grid-template-columns:repeat(3,1fr)}
    .equipment-grid{grid-template-columns:repeat(2,1fr)}
    .culture-grid{grid-template-columns:repeat(2,1fr)}
    .contact-info-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:2fr 1fr 1fr}
    .about-wrapper{gap:30px}
    .pd-wrapper{gap:30px}
}

@media(max-width:991px){
    :root{--header-h:60px}
    .banner-slider{height:350px}
    .banner-title{font-size:28px}
    .banner-desc{font-size:14px}
    .banner-arrow{width:36px;height:36px;font-size:14px}
    .banner-arrow-left{left:10px}
    .banner-arrow-right{right:10px}
    .category-grid{grid-template-columns:repeat(3,1fr)}
    .category-card:nth-child(3n)::after{display:none}
    .category-img-placeholder{width:100px;height:100px}
    .category-name{font-size:14px}
    .category-name-en{font-size:11px}
    .product-grid{grid-template-columns:repeat(2,1fr);gap:15px}
    .news-wrapper{flex-direction:column}
    .news-featured-img-placeholder{height:250px}
    .about-wrapper{flex-direction:column}
    .about-cards{grid-template-columns:repeat(3,1fr)}
    .about-intro{flex-direction:column}
    .honor-grid{grid-template-columns:repeat(2,1fr)}
    .equipment-grid{grid-template-columns:repeat(2,1fr)}
    .culture-grid{grid-template-columns:repeat(2,1fr)}
    .stat-grid{grid-template-columns:repeat(2,1fr)}
    .contact-info-grid{grid-template-columns:repeat(2,1fr)}
    .contact-wrapper{flex-direction:column}
    .pd-wrapper{flex-direction:column}
    .pd-gallery{flex:auto;max-width:100%}
    .pd-gallery-main{height:350px}
    .news-detail-wrapper{flex-direction:column}
    .news-detail-main{max-width:100%}
    .news-detail-sidebar{width:100%}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    .form-row{flex-direction:column}
    .page-banner{height:200px}
    .page-banner-title,.page-banner-content h1{font-size:24px}
    .breadcrumb-bar{margin-top:60px}
}

@media(max-width:767px){
    :root{--header-h:56px}
    .banner-slider{height:280px}
    .banner-title{font-size:22px}
    .banner-desc{display:none}
    .section-title h2{font-size:20px}
    .category-grid{grid-template-columns:repeat(3,1fr);gap:0}
    .category-card{padding:15px 8px 12px}
    .category-card:nth-child(3n)::after{display:none}
    .category-img-placeholder{width:80px;height:80px}
    .category-name{font-size:14px}
    .category-name-en{font-size:10px}
    .product-grid{grid-template-columns:repeat(2,1fr);gap:12px}
    .product-img-placeholder{height:180px}
    .about-cards{grid-template-columns:repeat(2,1fr)}
    .about-card-img-placeholder{height:150px}
    .news-item{flex-direction:column}
    .news-item-img-placeholder{width:100%;height:160px}
    .honor-grid{grid-template-columns:repeat(2,1fr);gap:15px}
    .equipment-grid{grid-template-columns:1fr}
    .culture-grid{grid-template-columns:1fr}
    .contact-info-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .pd-gallery-main{height:280px}
    .pd-tabs .tab-nav{flex-wrap:wrap}
    .pd-tabs .tab-nav-item{padding:10px 15px;font-size:14px}
    .category-tabs{padding:12px;gap:6px}
    .cat-tab{padding:6px 14px;font-size:13px}
    .news-detail-meta{flex-wrap:wrap;gap:10px}
    .news-nav{flex-direction:column;gap:10px}
    .news-nav a{max-width:100%}
    .pagination .page-btn,.pagination span,.pagination a{min-width:32px;height:32px;font-size:12px}
    .back-to-top{bottom:20px;right:15px;width:38px;height:38px}
    .breadcrumb-bar{margin-top:56px}
}

@media(max-width:575px){
    :root{--header-h:52px}
    .container{padding:0 12px}
    .banner-slider{height:220px}
    .banner-title{font-size:18px}
    .banner-dot{width:8px;height:8px}
    .category-grid{grid-template-columns:repeat(3,1fr);gap:0}
    .category-card{padding:12px 5px 10px}
    .category-card:nth-child(3n)::after{display:none}
    .category-img-placeholder{width:60px;height:60px;margin-bottom:6px}
    .category-name{font-size:13px}
    .category-name-en{font-size:10px}
    .product-grid{grid-template-columns:1fr 1fr;gap:10px}
    .product-img-placeholder{height:150px}
    .product-info{padding:10px}
    .product-name{font-size:13px}
    .about-cards{grid-template-columns:1fr 1fr}
    .honor-grid{grid-template-columns:1fr}
    .stat-grid{grid-template-columns:1fr 1fr;gap:10px}
    .stat-item{padding:20px 10px}
    .stat-number{font-size:28px}
    .pd-tabs .tab-nav{flex-direction:column}
    .pd-tabs .tab-nav-item{text-align:center;border-bottom:1px solid var(--border-light)}
    .pd-tabs .tab-nav-item::after{display:none}
    .pd-tabs .tab-nav-item.active{background:var(--primary);color:var(--white)}
    .pd-actions{flex-direction:column}
    .pd-actions .btn-inquiry,.pd-actions .btn-contact{width:100%;text-align:center}
    .spec-table .spec-label{width:100px}
    .pd-nav{flex-direction:column}
    .pd-nav a{max-width:100%}
    .page-banner{height:160px}
    .breadcrumb-bar{margin-top:52px}
}