:root {
            --primary: #0d6efd;
            --secondary: #6c757d;
            --success: #198754;
            --dark: #212529;
            --light: #f8f9fa;
            --gradient: linear-gradient(135deg, #0d6efd 0%, #6610f2 100%);
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--dark) !important;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 80%;
        }
        .hero {
            background: var(--gradient);
            padding: 8rem 0 6rem;
            color: white;
            position: relative;
            overflow: hidden;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        .hero .lead {
            font-size: 1.25rem;
            opacity: 0.9;
            margin-bottom: 2rem;
        }
        .hero .btn-light {
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .hero .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
        }
        .service-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(13, 110, 253, 0.1);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: var(--gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .stats-section {
            background: linear-gradient(rgba(13, 110, 253, 0.9), rgba(102, 16, 242, 0.9)), url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80');
            background-size: cover;
            background-attachment: fixed;
            color: white;
            padding: 6rem 0;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            background-color: #f8f9fa;
            border-radius: 50px;
            color: #495057;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }
        .flink:hover {
            background-color: var(--primary);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
            border-color: var(--primary);
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 4rem 0;
        }
        .portfolio-item {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 2rem;
        }
        .portfolio-item img {
            transition: transform 0.5s ease;
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .portfolio-item:hover img {
            transform: scale(1.05);
        }
        .portfolio-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            color: white;
            padding: 2rem;
            transform: translateY(20px);
            opacity: 0;
            transition: all 0.4s ease;
        }
        .portfolio-item:hover .portfolio-overlay {
            transform: translateY(0);
            opacity: 1;
        }
        footer {
            background-color: var(--dark);
            color: #adb5bd;
            padding: 4rem 0 2rem;
        }
        footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: #343a40;
            border-radius: 50%;
            margin-right: 0.75rem;
            transition: all 0.3s ease;
        }
        .social-icons a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        .copyright {
            border-top: 1px solid #343a40;
            padding-top: 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .btn-primary {
            background: var(--gradient);
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(13, 110, 253, 0.3);
        }
        .form-control {
            padding: 0.75rem 1rem;
            border-radius: 8px;
            border: 1px solid #ced4da;
            transition: all 0.3s ease;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero {
                padding: 6rem 0 4rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }