:root {
            --primary:#1e6fff;
            --blue-dark:#0d47a1;
            --bg:#f8f9fb;
            --text:#333;
            --gray:#666;
        }

        * { margin:0; padding:0; box-sizing:border-box; }
        html,body { overflow-x:hidden; }
        body {
            font-family:"Microsoft YaHei","PingFang SC";
            color:var(--text);
        }

        .container {
            max-width:1200px;
            margin:0 auto;
            padding:0 20px;
        }

        /* Header（与最终版一致） */
        header {
            position:fixed; top:0; width:100%;
            background:rgba(255,255,255,.98);
            box-shadow:0 2px 10px rgba(0,0,0,.1);
            z-index:1000;
        }
        nav {
            display:flex; justify-content:space-between; align-items:center;
            height:76px;
        }
        .logo h1 { color:var(--primary); font-size:26px; }
        .logo span { font-size:12px; color:var(--gray); margin-left:15px; }

        .nav-menu { display:flex; list-style:none; }
        .nav-menu li { margin-left:35px; }
        .nav-menu a {
            text-decoration:none; color:var(--text);
            font-size:15px; transition:.3s;
        }
        .nav-menu a:hover,
        .nav-menu a.active { color:var(--primary); }

        .menu-toggle { display:none; font-size:24px; cursor:pointer; }

        /* Banner */
        .page-banner {
            padding-top: 76px;
            padding-bottom: 0px;
            position: relative;
            overflow: hidden;
        }
        
        .banner-image {
            height: 320px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .banner-content {
            color: #fff;
            text-align: center;
            z-index: 2;
        }
        
        .banner-content h1 {
            font-size: 44px;
            margin-bottom: 20px;
            text-shadow: 0 4px 25px rgba(0,0,0,.5);
            line-height: 1.3;
        }
        
        .banner-content h2 {
            font-size: 22px;
            opacity: .95;
        }

        /* Section */
        section { padding:90px 0; }
        .section-title { text-align:center; margin-bottom:70px; }
        .section-title h2 { font-size:40px; margin-bottom:15px; }
        .section-title p { color:var(--gray); font-size:16px; }
        .section-title::after {
            content:''; display:block; width:80px; height:4px;
            background:var(--primary); margin:20px auto 0;
        }

        /* Filter Buttons */
        .filter-buttons {
            display:flex;
            justify-content:center;
            gap:15px;
            margin-bottom:50px;
            flex-wrap:wrap;
        }
        .filter-btn {
            padding:12px 30px;
            border:2px solid var(--primary);
            background:transparent;
            color:var(--primary);
            border-radius:25px;
            cursor:pointer;
            font-size:14px;
            transition:.3s;
			text-decoration: none; line-height: 25px;
        }
        .filter-btn:hover,
        .filter-btn.active {
            background:var(--primary);
            color:#fff;
        }

        /* Cases Grid */
        .cases-grid {
            display:grid;
            grid-template-columns:repeat(auto-fit,minmax(350px,1fr));
            gap:40px;
        }
        .case-card {
            background:#fff;
            border-radius:12px;
            overflow:hidden;
            box-shadow:0 5px 25px rgba(0,0,0,.08);
            transition:.4s;
        }
        .case-card:hover {
            transform:translateY(-10px);
            box-shadow:0 20px 40px rgba(0,0,0,.15);
        }
        .case-image {
            height:240px;
            background:linear-gradient(135deg,#e0e0e0,#f5f5f5);
            display:flex; align-items:center; justify-content:center;
            color:#999; font-size:18px;
            position:relative;
        }
        .case-image::after {
            content:attr(data-category);
            position:absolute; top:15px; left:15px;
            background:var(--primary);
            color:#fff;
            padding:5px 15px;
            border-radius:15px;
            font-size:12px;
        }
        .case-info {
            padding:30px;
        }
        .case-info h3 {
            font-size:22px;
            margin-bottom:12px;
            color:var(--text);
        }
        .case-info p {
            color:var(--gray);
            line-height:1.8;
            margin-bottom:20px;
        }
        .case-meta {
            display:flex;
            justify-content:space-between;
            align-items:center;
            padding-top:15px;
            border-top:1px solid #eee;
            font-size:14px;
            color:var(--gray);
        }

        /* Pagination */
        .pagination {
            display:flex;
            justify-content:center;
            gap:10px;
            margin-top:60px;
        }
        .page-btn {
            width:45px; height:45px;
            border:1px solid #ddd;
            background:#fff;
            border-radius:50%;
            display:flex; align-items:center; justify-content:center;
            cursor:pointer;
            transition:.3s;
        }
        .page-btn:hover,
        .page-btn.active {
            background:var(--primary);
            color:#fff;
            border-color:var(--primary);
        }
		/* ================= 基础动画 ================= */
		.scroll-animate {
		    opacity: 0;
		    transition: all .8s cubic-bezier(.25,.46,.45,.94);
		}
		
		.scroll-animate.in-view {
		    opacity: 1;
		    transform: none !important;
		}
		
		.fade-scale { transform: scale(1.05); }
		.fade-up { transform: translateY(30px); }
		
		/* ================= 案例卡片：立体弹出 ================= */
		.case-pop {
		    transform: scale(0.85) rotate(-3deg);
		}
		
		.case-grid .case-pop:nth-child(1) { transition-delay: .1s; }
		.case-grid .case-pop:nth-child(2) { transition-delay: .2s; }
		.case-grid .case-pop:nth-child(3) { transition-delay: .3s; }
		.case-grid .case-pop:nth-child(4) { transition-delay: .4s; }
		
		/* ================= 案例卡片样式 ================= */
		.case-grid {
		    display: grid;
		    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
		    gap: 30px;
		}
		
		.case-card {
		    background: #fff;
		    border-radius: 12px;
		    overflow: hidden;
		    box-shadow: 0 5px 25px rgba(0,0,0,.08);
		    text-decoration: none;
		    color: inherit;
		    transition: .4s;
		}
		
		.case-card:hover {
		    transform: translateY(-10px) scale(1.02) !important;
		    box-shadow: 0 20px 50px rgba(30,111,255,.15);
		}
		
		/* ================= 图片 & 浮层 ================= */
		.case-image {
		    position: relative;
		    overflow: hidden;
		}
		
		.case-image img {
		    width: 100%;
		    height: 240px;
		    object-fit: cover;
		    transition: .6s;
		}
		
		.case-card:hover .case-image img {
		    transform: scale(1.1);
		}
		
		.case-overlay {
		    position: absolute;
		    inset: 0;
		    background: rgba(30,111,255,.8);
		    display: flex;
		    align-items: center;
		    justify-content: center;
		    opacity: 0;
		    transition: .4s;
		}
		
		.case-overlay span {
		    color: #fff;
		    font-size: 16px;
		    font-weight: bold;
		    border: 2px solid #fff;
		    padding: 10px 25px;
		    border-radius: 30px;
		}
		
		.case-card:hover .case-overlay {
		    opacity: 1;
		}
		
		/* ================= 案例信息 ================= */
		.case-info {
		    padding: 25px;
		}
		
		.case-info h4 {
		    font-size: 18px;
		    margin-bottom: 10px;
		}
		
		.case-info p {
		    color: var(--gray);
		    font-size: 14px;
		}
		/* CTA */
		.services-cta {
		    padding: 80px 0;
		    text-align: center;
		    background: linear-gradient(135deg, var(--primary), #00bfff);
		    color: #fff;
		}
		/* ================= CTA 按钮主体 ================= */
		.btn-cta {
			margin-top: 20px;
		    display: inline-flex;
		    align-items: center;
		    gap: 12px;
		    padding: 10px 36px;
		    background: linear-gradient(135deg, var(--primary), #00bfff);
		    color: #fff;
		    font-size: 16px;
		    font-weight: bold;
		    border-radius: 50px;
		    text-decoration: none;
		    box-shadow: 0 8px 30px rgba(30,111,255,.35);
		    transition: all .3s ease;
		    position: relative;
		    overflow: hidden;
		}
		
		/* ================= 光晕扫过效果 ================= */
		.btn-cta::before {
		    content: '';
		    position: absolute;
		    top: 0;
		    left: -100%;
		    width: 100%;
		    height: 100%;
		    background: linear-gradient(90deg, transparent, rgba(255,255,255,.3), transparent);
		    transition: .5s;
		}
		
		.btn-cta:hover::before {
		    left: 100%;
		}
		
		.btn-cta:hover {
		    transform: translateY(-4px);
		    box-shadow: 0 12px 40px rgba(30,111,255,.45);
		}
		
		/* ================= 文字 ================= */
		.btn-cta .btn-text {
		    position: relative;
		    z-index: 2;
		}
		
		/* ================= 箭头图标 ================= */
		.btn-cta .btn-icon {
		    display: flex;
		    align-items: center;
		    justify-content: center;
		    width: 24px;
		    height: 24px;
		    transition: .3s;
		}
		
		.btn-cta .btn-icon svg {
		    width: 100%;
		    height: 100%;
		    stroke: currentColor;
		}
		
		.btn-cta:hover .btn-icon {
		    transform: translateX(4px);
		}
        /* Footer */
       footer { background: #1a1a2e; color: white; padding: 70px 0 20px; }
       .footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
       .footer-column h4 { font-size: 18px; margin-bottom: 25px; position: relative; padding-bottom: 10px; }
       .footer-column h4::after { content: ''; display: block; width: 40px; height: 3px; background: var(--primary-blue); position: absolute; bottom: 0; left: 0; }
       .footer-column p { color: #aaa; line-height: 1.9; margin-bottom: 20px; }
	   .footer-column h4 {
	       color: #fff;
	       margin-bottom: 25px;
	       font-size: 18px;
	   }
	   .footer-column img {
	       width: 20px;
	       height: 20px;
	       object-fit: contain;
	       filter: brightness(0) invert(1); /* ✅ 白色图标 */
	   }
       .footer-column ul { list-style: none; }
       .footer-column ul li { margin-bottom: 12px; }
       .footer-column ul li a { color: #aaa; text-decoration: none; transition: color 0.3s; font-size: 14px; }
       .footer-column ul li a:hover { color: var(--primary-blue); }
       .social-links { display: flex; gap: 15px; margin-top: 20px; }
       .social-links a { width: 42px; height: 42px; background: #2a2a4a; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; text-decoration: none; transition: all 0.3s; font-size: 14px; }
       .social-links a:hover { background: var(--primary-blue); transform: translateY(-3px); }
       .footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid #2a2a4a; color: #777; font-size: 14px; line-height: 25px;}
	   .footer-bottom p a{
	   	color: #777;
	   	text-decoration: none; 
	   }

        /* Responsive */
        @media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } .advantages-grid { grid-template-columns: repeat(2, 1fr); } .cases-grid { grid-template-columns: repeat(2, 1fr); } .footer-content { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .menu-toggle { display: block; } .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: white; flex-direction: column; padding: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); } .nav-menu.active { display: flex; } .nav-menu li { margin: 10px 0; } .nav-phone { display: none; } .banner-content h1 { font-size: 36px; } .about-content, .contact-content { grid-template-columns: 1fr; } .services-grid, .cases-grid, .news-grid { grid-template-columns: 1fr; } .advantages-grid { grid-template-columns: repeat(2, 1fr); } .footer-content { grid-template-columns: 1fr; } }
        @media (max-width: 480px) { .banner { height: 450px; } .banner-content h1 { font-size: 28px; } .section-title h2 { font-size: 28px; } .advantages-grid { grid-template-columns: 1fr; } }