/* ========== CSS Variables & Reset ========== */
:root {
  --primary: #165DFF;
  --primary-light: #E8F3FF;
  --primary-hover: #0E4FD6;
  --success: #00B42A;
  --white: #FFFFFF;
  --bg: #F8F9FA;
  --border: #E5E6EB;
  --text: #333333;
  --text-secondary: #666666;
  --footer-bg: #1D2129;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-sm: 6px;
  --transition: 0.3s ease;
  --font: 'PingFang SC','Microsoft YaHei',sans-serif;
  --max-width: 1200px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:var(--font);color:var(--text);background:var(--white);line-height:1.6;overflow-x:hidden;}
a{text-decoration:none;color:inherit;transition:color var(--transition);}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
button{cursor:pointer;border:none;font-family:var(--font);transition:all var(--transition);}
input,select,textarea{font-family:var(--font);outline:none;transition:border-color var(--transition);}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 20px;}

/* ========== Buttons ========== */
.btn-primary{display:inline-block;background:var(--primary);color:var(--white);padding:10px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;text-align:center;transition:all var(--transition);}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px rgba(22,93,255,0.3);}
.btn-outline{display:inline-block;background:transparent;color:var(--primary);border:1px solid var(--primary);padding:10px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;text-align:center;transition:all var(--transition);}
.btn-outline:hover{background:var(--primary);color:var(--white);}
.btn-lg{padding:14px 36px;font-size:16px;}
.btn-sm{padding:8px 16px;font-size:13px;}

/* ========== Header / Navigation ========== */
.site-header{position:sticky;top:0;z-index:1000;background:var(--white);border-bottom:1px solid var(--border);transition:box-shadow var(--transition);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:80px;}
.header-brand{display:flex;align-items:center;}
.header-brand-logo{height:50px;max-width:200px;object-fit:contain;}
.header-nav{display:flex;gap:24px;flex-shrink:0;white-space:nowrap;}
.header-nav a{font-size:14px;color:var(--text);position:relative;padding:4px 0;}
.header-nav a:hover,.header-nav a.active{color:var(--primary);}
.header-nav a.active::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--primary);border-radius:1px;}
.header-contact{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.header-phone{font-size:13px;color:var(--text);}
.header-phone span{font-size:16px;font-weight:600;color:var(--primary);letter-spacing:0.3px;}
.header-consult{background:var(--primary);color:var(--white);padding:6px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;}
.header-consult:hover{background:var(--primary-hover);}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;background:none;padding:8px;}
.mobile-menu-btn span{display:block;width:22px;height:2px;background:var(--text);border-radius:1px;transition:all var(--transition);}
.mobile-menu-btn.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.mobile-menu-btn.active span:nth-child(2){opacity:0;}
.mobile-menu-btn.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}

/* Mobile Sidebar */
.mobile-sidebar{position:fixed;top:0;right:-100%;width:280px;height:100%;background:var(--white);z-index:2000;padding:20px;transition:right var(--transition);overflow-y:auto;box-shadow:-4px 0 20px rgba(0,0,0,0.1);}
.mobile-sidebar.open{right:0;}
.mobile-sidebar-close{background:none;font-size:24px;text-align:right;width:100%;margin-bottom:20px;color:var(--text);}
.mobile-sidebar nav{display:flex;flex-direction:column;gap:0;}
.mobile-sidebar nav a{display:block;padding:14px 0;font-size:16px;border-bottom:1px solid var(--border);color:var(--text);}
.mobile-sidebar nav a:hover{color:var(--primary);}
.mobile-sidebar .sidebar-phone{margin-top:20px;font-size:16px;color:var(--primary);font-weight:600;}
.mobile-sidebar .sidebar-consult{display:block;width:100%;margin-top:16px;text-align:center;}
.mobile-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:1999;opacity:0;pointer-events:none;transition:opacity var(--transition);}
.mobile-overlay.show{opacity:1;pointer-events:auto;}

/* ========== Floating Button ========== */
.floating-btn{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:900;writing-mode:vertical-lr;background:var(--primary);color:var(--white);padding:16px 10px;border-radius:var(--radius) 0 0 var(--radius);font-size:13px;letter-spacing:3px;cursor:pointer;transition:all var(--transition);box-shadow:var(--shadow);}
.floating-btn:hover{background:var(--primary-hover);padding-right:14px;}

/* ========== Footer ========== */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,0.7);padding:60px 0 0;}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-brand-name{font-size:20px;font-weight:600;color:var(--white);margin-bottom:12px;}
.footer-brand-slogan{font-size:13px;color:rgba(255,255,255,0.5);margin-bottom:20px;}
.footer-info p{font-size:13px;margin-bottom:8px;display:flex;align-items:flex-start;gap:8px;}
.footer-info p::before{content:'📞';flex-shrink:0;}
.footer-info .footer-address::before{content:'📍';}
.footer-nav-title,.footer-follow-title{font-size:15px;color:var(--white);font-weight:500;margin-bottom:16px;}
.footer-nav-list{display:flex;flex-direction:column;gap:10px;}
.footer-nav-list a{font-size:13px;color:rgba(255,255,255,0.6);transition:color var(--transition);}
.footer-nav-list a:hover{color:var(--white);}
.footer-qrcode{width:100px;height:100px;background:var(--white);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:12px;margin-bottom:8px;}
.footer-follow-text{font-size:12px;color:rgba(255,255,255,0.5);}
.footer-bottom{text-align:center;padding:20px 0;font-size:12px;color:rgba(255,255,255,0.4);}

/* ========== Section Common ========== */
.section{padding:80px 0;}
.section-alt{background:var(--bg);}
.section-title{text-align:center;margin-bottom:48px;}
.section-title h2{font-size:28px;font-weight:600;margin-bottom:8px;}
.section-title p{font-size:14px;color:var(--text-secondary);}

/* ========== Hero Banner ========== */
.hero-banner{position:relative;height:560px;overflow:hidden;}
.hero-slides{display:flex;transition:transform 0.6s ease;height:100%;}
.hero-slide{min-width:100%;height:100%;display:flex;align-items:center;justify-content:center;position:relative;}
.hero-slide-bg{position:absolute;inset:0;background-size:cover;background-position:center;}
.hero-slide-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,0,0,0.7) 0%,rgba(0,0,0,0.4) 50%,rgba(0,0,0,0.6) 100%);}
.hero-content{position:relative;z-index:2;text-align:center;color:var(--white);max-width:700px;padding:0 20px;}
.hero-content h1{font-size:42px;font-weight:600;margin-bottom:16px;line-height:1.3;}
.hero-content p{font-size:18px;opacity:0.85;margin-bottom:32px;}
.hero-content .btn-primary{padding:14px 40px;font-size:16px;}
.hero-arrows{position:absolute;top:50%;width:100%;display:flex;justify-content:space-between;padding:0 24px;transform:translateY(-50%);z-index:10;pointer-events:none;}
.hero-arrow{pointer-events:auto;width:44px;height:44px;background:rgba(255,255,255,0.15);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:18px;cursor:pointer;transition:all var(--transition);backdrop-filter:blur(4px);}
.hero-arrow:hover{background:rgba(255,255,255,0.3);}
.hero-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:10;}
.hero-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.4);cursor:pointer;transition:all var(--transition);}
.hero-dot.active{background:var(--white);width:28px;border-radius:5px;}

/* ========== Search Bar ========== */
.search-section{position:relative;z-index:5;margin-top:-30px;}
.search-bar{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-hover);padding:20px 24px;display:flex;gap:12px;align-items:center;}
.search-bar input{flex:1;height:48px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 16px;font-size:15px;}
.search-bar input:focus{border-color:var(--primary);}
.search-bar select{height:48px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 16px;font-size:14px;color:var(--text-secondary);min-width:140px;}
.search-bar .btn-primary{height:48px;padding:0 32px;white-space:nowrap;}

/* ========== Category Cards ========== */
.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;}
.category-card{background:var(--white);border-radius:var(--radius);padding:32px 16px;text-align:center;box-shadow:var(--shadow);transition:all var(--transition);cursor:pointer;}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.category-card-icon{width:64px;height:64px;margin:0 auto 16px;background:var(--primary-light);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;}
.category-card-name{font-size:16px;font-weight:500;margin-bottom:4px;}
.category-card-count{font-size:12px;color:var(--text-secondary);}

/* ========== Activity Banner ========== */
.activity-banner{background:linear-gradient(135deg,var(--primary) 0%,#0E4FD6 100%);padding:32px 0;border-radius:var(--radius);margin-top:40px;}
.activity-inner{display:flex;align-items:center;justify-content:space-between;}
.activity-text{color:var(--white);}
.activity-text h3{font-size:22px;font-weight:600;margin-bottom:6px;}
.activity-text p{font-size:14px;opacity:0.85;}
.activity-banner .btn-primary{background:var(--white);color:var(--primary);padding:12px 32px;font-weight:600;}
.activity-banner .btn-primary:hover{box-shadow:0 4px 16px rgba(0,0,0,0.15);}

/* ========== Product Cards ========== */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.product-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.product-card-image{position:relative;height:240px;background:var(--bg);overflow:hidden;}
.product-card-image-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;}
.product-card-tag{position:absolute;top:12px;left:12px;background:var(--primary);color:var(--white);padding:3px 10px;border-radius:3px;font-size:12px;font-weight:500;}
.product-card-tag.hot{background:#FF4D4F;}
.product-card-tag.new{background:var(--success);}
.product-card-body{padding:16px;}
.product-card-name{font-size:15px;font-weight:500;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.product-card-origin{font-size:12px;color:var(--text-secondary);margin-bottom:8px;}
.product-card-price{font-size:18px;font-weight:600;color:#E8453C;margin-bottom:12px;}
.product-card-price span{font-size:12px;font-weight:400;color:var(--text-secondary);}
.product-card-btn{display:block;width:100%;text-align:center;padding:8px 0;border:1px solid var(--primary);color:var(--primary);border-radius:var(--radius-sm);font-size:13px;transition:all var(--transition);}
.product-card-btn:hover{background:var(--primary);color:var(--white);}

/* ========== Enterprise Strength ========== */
.strength-section{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.strength-text h3{font-size:14px;color:var(--primary);font-weight:500;margin-bottom:12px;text-transform:uppercase;letter-spacing:1px;}
.strength-text h2{font-size:28px;font-weight:600;margin-bottom:16px;line-height:1.4;}
.strength-text p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:24px;}
.strength-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:32px;}
.stat-item{text-align:center;padding:16px;background:var(--primary-light);border-radius:var(--radius);}
.stat-number{font-size:28px;font-weight:600;color:var(--primary);}
.stat-number span{font-size:14px;font-weight:400;}
.stat-label{font-size:13px;color:var(--text-secondary);margin-top:4px;}
.strength-image{height:400px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;overflow:hidden;}

/* ========== News Cards ========== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-card-image{height:180px;background:var(--bg);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;}
.news-card-body{padding:20px;}
.news-card-date{font-size:12px;color:var(--text-secondary);margin-bottom:8px;}
.news-card-title{font-size:16px;font-weight:500;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card-summary{font-size:13px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;}
.news-card-link{font-size:13px;color:var(--primary);font-weight:500;}
.news-card-link:hover{text-decoration:underline;}

/* ========== Case Cards ========== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.case-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);cursor:pointer;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.case-card-image{height:220px;background:var(--bg);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;position:relative;overflow:hidden;}
.case-card-image-overlay{position:absolute;inset:0;background:rgba(0,0,0,0);transition:background var(--transition);display:flex;align-items:center;justify-content:center;}
.case-card:hover .case-card-image-overlay{background:rgba(0,0,0,0.4);}
.case-card-image-overlay span{color:var(--white);font-size:14px;opacity:0;transition:opacity var(--transition);}
.case-card:hover .case-card-image-overlay span{opacity:1;}
.case-card-body{padding:20px;}
.case-card-title{font-size:16px;font-weight:500;margin-bottom:6px;}
.case-card-tags{display:flex;gap:8px;margin-bottom:8px;}
.case-card-tag{font-size:12px;color:var(--primary);background:var(--primary-light);padding:2px 8px;border-radius:3px;}
.case-card-desc{font-size:13px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ========== CTA Banner ========== */
.cta-banner{background:linear-gradient(135deg,#1a1a2e 0%,#0f3460 100%);padding:60px 0;text-align:center;color:var(--white);}
.cta-banner h2{font-size:28px;font-weight:600;margin-bottom:12px;}
.cta-banner p{font-size:16px;opacity:0.8;margin-bottom:28px;}
.cta-banner .btn-group{display:flex;gap:16px;justify-content:center;}
.cta-banner .btn-primary{background:var(--primary);}
.cta-banner .btn-outline{border-color:var(--white);color:var(--white);}
.cta-banner .btn-outline:hover{background:var(--white);color:var(--text);}

/* ========== Page Banner (Sub pages) ========== */
.page-banner{height:300px;background:linear-gradient(135deg,#1a1a2e 0%,#0f3460 100%);display:flex;align-items:center;justify-content:center;text-align:center;color:var(--white);}
.page-banner h1{font-size:36px;font-weight:600;margin-bottom:10px;}
.page-banner p{font-size:16px;opacity:0.75;}
.page-banner-dark{background:linear-gradient(135deg,#1D2129 0%,#2c3e50 50%,#0f3460 100%);}

/* ========== Breadcrumb ========== */
.breadcrumb{padding:16px 0;font-size:13px;color:var(--text-secondary);}
.breadcrumb a{color:var(--text-secondary);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{margin:0 8px;color:var(--border);}

/* ========== Filter Section ========== */
.filter-section{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:24px;}
.filter-row{display:flex;align-items:flex-start;gap:16px;padding:12px 0;border-bottom:1px solid var(--border);}
.filter-row:last-child{border-bottom:none;}
.filter-label{font-size:14px;font-weight:500;color:var(--text);min-width:80px;padding-top:6px;flex-shrink:0;}
.filter-options{display:flex;flex-wrap:wrap;gap:10px;}
.filter-options a{display:inline-block;padding:6px 16px;font-size:13px;color:var(--text-secondary);border-radius:20px;transition:all var(--transition);border:1px solid transparent;}
.filter-options a:hover{color:var(--primary);background:var(--primary-light);}
.filter-options a.active{background:var(--primary);color:var(--white);border-color:var(--primary);}
.filter-colors{display:flex;flex-wrap:wrap;gap:12px;}
.filter-color{width:32px;height:32px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:all var(--transition);position:relative;}
.filter-color:hover,.filter-color.active{border-color:var(--primary);transform:scale(1.15);}
.filter-color.active::after{content:'✓';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:14px;font-weight:600;text-shadow:0 0 3px rgba(0,0,0,0.5);}
.filter-slider-wrap{display:flex;align-items:center;gap:16px;flex:1;}
.filter-slider{flex:1;height:4px;-webkit-appearance:none;background:var(--border);border-radius:2px;outline:none;}
.filter-slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 0 4px rgba(22,93,255,0.3);}
.filter-slider-value{font-size:14px;color:var(--primary);font-weight:500;min-width:80px;}

/* ========== Sort Bar ========== */
.sort-bar{display:flex;align-items:center;justify-content:space-between;padding:16px 0;margin-bottom:24px;border-bottom:1px solid var(--border);}
.sort-tabs{display:flex;gap:20px;}
.sort-tabs a{font-size:14px;color:var(--text-secondary);padding:4px 0;border-bottom:2px solid transparent;transition:all var(--transition);}
.sort-tabs a:hover,.sort-tabs a.active{color:var(--primary);border-bottom-color:var(--primary);}
.sort-options{display:flex;align-items:center;gap:12px;}
.sort-options span{font-size:13px;color:var(--text-secondary);}
.sort-options select{padding:6px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;color:var(--text);}
.result-count{font-size:13px;color:var(--text-secondary);margin-bottom:20px;}
.result-count strong{color:var(--primary);}
.reset-filter{font-size:13px;color:var(--primary);margin-left:16px;cursor:pointer;}

/* ========== Pagination ========== */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;padding:40px 0;}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;color:var(--text-secondary);transition:all var(--transition);}
.pagination a:hover{color:var(--primary);border-color:var(--primary);}
.pagination span.current{background:var(--primary);color:var(--white);border-color:var(--primary);}
.pagination .disabled{opacity:0.4;pointer-events:none;}

/* ========== Product Detail ========== */
.product-detail-main{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-bottom:60px;}
.product-gallery{position:relative;}
.product-gallery-main{height:480px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;margin-bottom:12px;overflow:hidden;}
.product-gallery-thumbs{display:flex;gap:8px;}
.product-gallery-thumb{width:72px;height:72px;background:var(--bg);border-radius:4px;border:2px solid transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--text-secondary);transition:border-color var(--transition);}
.product-gallery-thumb:hover,.product-gallery-thumb.active{border-color:var(--primary);}
.product-info{padding:10px 0;}
.product-info-tag{display:inline-block;background:var(--primary-light);color:var(--primary);padding:3px 10px;border-radius:3px;font-size:12px;margin-bottom:12px;}
.product-info h1{font-size:24px;font-weight:600;margin-bottom:8px;}
.product-info-origin{font-size:14px;color:var(--text-secondary);margin-bottom:16px;}
.product-info-price{font-size:28px;font-weight:600;color:#E8453C;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border);}
.product-info-price span{font-size:14px;font-weight:400;color:var(--text-secondary);margin-left:8px;}
.product-params{margin-bottom:24px;}
.product-params table{width:100%;border-collapse:collapse;}
.product-params th,.product-params td{padding:10px 12px;text-align:left;font-size:13px;border-bottom:1px solid var(--border);}
.product-params th{color:var(--text-secondary);font-weight:400;width:100px;background:var(--bg);}
.product-actions{display:flex;gap:12px;margin-top:24px;}
.product-actions .btn-primary{flex:1;}
.product-actions .btn-outline{flex:1;}

/* ========== Detail Content Area ========== */
.detail-section{margin-bottom:48px;}
.detail-section-title{font-size:20px;font-weight:600;margin-bottom:24px;padding-bottom:12px;border-bottom:2px solid var(--primary);display:inline-block;}
.detail-content{font-size:15px;line-height:1.8;color:var(--text);}
.detail-content p{margin-bottom:16px;}
.detail-content img{margin:16px 0;border-radius:var(--radius);}
.detail-content h3{font-size:18px;font-weight:500;margin:24px 0 12px;}
.detail-content ul{padding-left:20px;margin-bottom:16px;}
.detail-content ul li{margin-bottom:8px;position:relative;padding-left:16px;}
.detail-content ul li::before{content:'•';color:var(--primary);position:absolute;left:0;}
.detail-images-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px;}
.detail-images-grid .detail-img-placeholder{height:200px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:13px;}

/* ========== Case Detail ========== */
.case-detail-header{margin-bottom:40px;}
.case-detail-gallery{height:480px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;margin-bottom:20px;overflow:hidden;}.case-detail-gallery-img{width:100%;height:100%;object-fit:cover;}
.case-detail-title{font-size:28px;font-weight:600;margin-bottom:12px;}
.case-detail-tags{display:flex;gap:8px;margin-bottom:16px;}
.case-detail-tags span{font-size:12px;padding:4px 12px;border-radius:3px;background:var(--primary-light);color:var(--primary);}
.case-detail-intro{font-size:15px;color:var(--text-secondary);line-height:1.8;padding:20px;background:var(--bg);border-radius:var(--radius);}
.case-detail-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;}
.case-detail-sidebar{position:sticky;top:100px;align-self:start;}
.sidebar-card{background:var(--bg);border-radius:var(--radius);padding:24px;margin-bottom:20px;}
.sidebar-card h4{font-size:15px;font-weight:500;margin-bottom:12px;}
.sidebar-card p{font-size:13px;color:var(--text-secondary);line-height:1.6;}
.sidebar-stars{color:#FADB14;font-size:18px;margin-bottom:8px;}
.sidebar-share{display:flex;gap:8px;}
.sidebar-share a{width:36px;height:36px;border-radius:50%;background:var(--white);display:flex;align-items:center;justify-content:center;font-size:14px;border:1px solid var(--border);transition:all var(--transition);}
.sidebar-share a:hover{border-color:var(--primary);color:var(--primary);}

/* ========== About Page ========== */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:80px;}
.about-intro-text h2{font-size:28px;font-weight:600;margin-bottom:16px;}
.about-intro-text p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:16px;}
.about-intro-image{height:380px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:80px;}
.stats-card{background:var(--white);border-radius:var(--radius);padding:36px 24px;text-align:center;box-shadow:var(--shadow);transition:all var(--transition);}
.stats-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.stats-card-number{font-size:40px;font-weight:600;color:var(--primary);margin-bottom:8px;}
.stats-card-number span{font-size:16px;font-weight:400;}
.stats-card-label{font-size:14px;color:var(--text-secondary);}

/* Timeline */
.timeline{position:relative;padding:20px 0;}
.timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--border);transform:translateX(-50%);}
.timeline-item{display:flex;align-items:flex-start;margin-bottom:48px;position:relative;}
.timeline-item:nth-child(odd){flex-direction:row-reverse;}
.timeline-content{width:45%;padding:24px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);}
.timeline-content h4{font-size:16px;font-weight:500;margin-bottom:8px;}
.timeline-content p{font-size:13px;color:var(--text-secondary);line-height:1.6;}
.timeline-dot{position:absolute;left:50%;transform:translateX(-50%);width:16px;height:16px;background:var(--primary);border-radius:50%;border:3px solid var(--white);box-shadow:0 0 0 2px var(--primary);z-index:1;}
.timeline-year{position:absolute;left:50%;transform:translateX(-50%);top:-28px;font-size:14px;font-weight:600;color:var(--primary);white-space:nowrap;}

/* Certificates */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.cert-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.cert-card-image{height:180px;background:var(--bg);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:13px;}
.cert-card-name{padding:14px;text-align:center;font-size:14px;font-weight:500;}

/* ========== News List ========== */
.news-tabs{display:flex;gap:32px;margin-bottom:32px;border-bottom:1px solid var(--border);padding-bottom:0;}
.news-tabs a{display:inline-block;padding:12px 0;font-size:16px;color:var(--text-secondary);border-bottom:2px solid transparent;transition:all var(--transition);margin-bottom:-1px;}
.news-tabs a:hover,.news-tabs a.active{color:var(--primary);border-bottom-color:var(--primary);}
.news-list-card{display:grid;grid-template-columns:300px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--border);transition:all var(--transition);}
.news-list-card:hover{transform:translateX(4px);}
.news-list-card-image{height:180px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:13px;flex-shrink:0;}
.news-list-card-body{display:flex;flex-direction:column;justify-content:center;}
.news-list-card-date{font-size:12px;color:var(--text-secondary);margin-bottom:8px;}
.news-list-card-title{font-size:18px;font-weight:500;margin-bottom:10px;line-height:1.5;}
.news-list-card-summary{font-size:14px;color:var(--text-secondary);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;}
.news-list-card-meta{font-size:12px;color:var(--text-secondary);display:flex;gap:16px;}

/* ========== News Detail ========== */
.article-header{text-align:center;padding:20px 0 32px;border-bottom:1px solid var(--border);margin-bottom:32px;}
.article-header h1{font-size:28px;font-weight:600;margin-bottom:16px;line-height:1.5;}
.article-meta{display:flex;justify-content:center;gap:24px;font-size:13px;color:var(--text-secondary);}
.article-body{max-width:800px;margin:0 auto;font-size:15px;line-height:1.9;}
.article-body p{margin-bottom:16px;}
.article-body img{margin:20px 0;border-radius:var(--radius);}
.article-body h3{font-size:18px;font-weight:500;margin:32px 0 16px;}
.article-nav{display:flex;justify-content:space-between;padding:32px 0;border-top:1px solid var(--border);margin-top:40px;}
.article-nav a{font-size:14px;color:var(--text-secondary);max-width:45%;}
.article-nav a:hover{color:var(--primary);}
.article-nav span{font-size:12px;display:block;margin-bottom:4px;color:var(--text-secondary);}
.related-news{margin-top:48px;}
.related-news h3{font-size:20px;font-weight:600;margin-bottom:24px;}

/* ========== Contact Page ========== */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:60px 0;}
.contact-info-list{margin-bottom:32px;}
.contact-info-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--border);}
.contact-info-item:last-child{border-bottom:none;}
.contact-info-icon{width:44px;height:44px;background:var(--primary-light);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;}
.contact-info-text h4{font-size:14px;font-weight:500;margin-bottom:4px;}
.contact-info-text p{font-size:14px;color:var(--text-secondary);}
.contact-map{height:300px;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;margin-bottom:20px;}
.contact-map-links{display:flex;gap:12px;}
.contact-form{background:var(--bg);border-radius:var(--radius);padding:36px;}
.contact-form h3{font-size:20px;font-weight:600;margin-bottom:24px;}
.form-group{margin-bottom:20px;}
.form-group label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;color:var(--text);}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;background:var(--white);}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);}
.form-group textarea{resize:vertical;min-height:120px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.contact-form .btn-primary{width:100%;padding:14px;font-size:16px;}

/* ========== Responsive ========== */
@media(max-width:1024px){
  .product-grid{grid-template-columns:repeat(3,1fr);}
  .category-grid{grid-template-columns:repeat(3,1fr);}
  .footer-main{grid-template-columns:1fr 1fr;gap:30px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .cert-grid{grid-template-columns:repeat(3,1fr);}
  .case-detail-layout{grid-template-columns:1fr;}
}
@media(max-width:768px){
  .header-nav,.header-contact .header-phone{display:none;}
  .mobile-menu-btn{display:flex;}
  .header-inner{height:60px;}
  .hero-banner{height:400px;}
  .hero-content h1{font-size:28px;}
  .hero-content p{font-size:15px;}
  .search-bar{flex-direction:column;}
  .search-bar input,.search-bar select,.search-bar .btn-primary{width:100%;}
  .category-grid{grid-template-columns:repeat(3,1fr);gap:12px;}
  .category-card{padding:20px 12px;}
  .category-card-icon{width:48px;height:48px;font-size:22px;}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .product-card-image{height:180px;}
  .news-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .strength-section{grid-template-columns:1fr;gap:30px;}
  .product-detail-main{grid-template-columns:1fr;gap:24px;}
  .product-gallery-main{height:300px;}
  .about-intro{grid-template-columns:1fr;gap:30px;}
  .contact-layout{grid-template-columns:1fr;gap:30px;}
  .footer-main{grid-template-columns:1fr;gap:24px;}
  .section{padding:48px 0;}
  .section-title h2{font-size:22px;}
  .page-banner{height:220px;}
  .page-banner h1{font-size:26px;}
  .timeline::before{left:20px;}
  .timeline-item,.timeline-item:nth-child(odd){flex-direction:row;}
  .timeline-content{width:calc(100% - 52px);margin-left:52px;}
  .timeline-dot{left:20px;}
  .timeline-year{left:20px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .stats-card{padding:24px 16px;}
  .stats-card-number{font-size:30px;}
  .cert-grid{grid-template-columns:repeat(2,1fr);}
  .news-list-card{grid-template-columns:1fr;}
  .news-list-card-image{height:200px;}
  .activity-inner{flex-direction:column;text-align:center;gap:16px;}
  .cta-banner h2{font-size:22px;}
  .filter-row{flex-direction:column;gap:8px;}
  .filter-label{min-width:auto;}
  .case-detail-layout{grid-template-columns:1fr;}
  .detail-images-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .product-actions{flex-direction:column;}
}
@media(max-width:480px){
  .product-grid{grid-template-columns:1fr;}
  .category-grid{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:1fr;}
  .hero-banner{height:360px;}
  .hero-content h1{font-size:24px;}
  .cta-banner .btn-group{flex-direction:column;align-items:center;}
}

/* ========== Scroll to Top ========== */
.scroll-top-btn{position:fixed;right:20px;bottom:80px;width:40px;height:40px;background:var(--white);border:1px solid var(--border);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text-secondary);cursor:pointer;opacity:0;pointer-events:none;transition:all var(--transition);z-index:800;box-shadow:var(--shadow);}
.scroll-top-btn.visible{opacity:1;pointer-events:auto;}
.scroll-top-btn:hover{background:var(--primary);color:var(--white);border-color:var(--primary);}

/* ========== Animation ========== */
.animate-ready{opacity:0;transform:translateY(24px);transition:opacity 0.6s ease,transform 0.6s ease;}
.animate-in{opacity:1;transform:translateY(0);}

/* ========== Header scrolled shadow ========== */
.header-scrolled{box-shadow:0 2px 12px rgba(0,0,0,0.08);}

/* ========== Product Detail Related Cases ========== */
.related-cases{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

/* ========== Secondary Conversion Bar ========== */
.conversion-bar{background:var(--bg);padding:24px;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;gap:20px;}
.conversion-bar h3{font-size:18px;font-weight:500;}
.conversion-bar p{font-size:13px;color:var(--text-secondary);margin-top:4px;}
.conversion-bar-actions{display:flex;gap:12px;flex-shrink:0;}

/* ========== Additional responsive for conversion bar ========== */
@media(max-width:768px){
  .conversion-bar{flex-direction:column;text-align:center;}
  .related-cases{grid-template-columns:1fr;}
}

/* ========== Color Filter Options ========== */
.filter-color[data-color="white"]{background:#FFFFFF;border:1px solid var(--border);}
.filter-color[data-color="gray"]{background:#999999;}
.filter-color[data-color="black"]{background:#333333;}
.filter-color[data-color="beige"]{background:#D4B896;}
.filter-color[data-color="brown"]{background:#8B5E3C;}
.filter-color[data-color="blue"]{background:#4A7FB5;}
.filter-color[data-color="green"]{background:#5B8C5A;}
.filter-color[data-color="red"]{background:#C75050;}