:root {
            --ptw-primary: #0d3b66;
            --ptw-secondary: #1a936f;
            --ptw-accent: #ff6b6b;
            --ptw-light: #f8f9fa;
            --ptw-dark: #212529;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: var(--ptw-dark);
            overflow-x: hidden;
        }
        .navbar {
            background-color: rgba(13, 59, 102, 0.95);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            background: linear-gradient(90deg, #fff, #1a936f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 5px;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(13, 59, 102, 0.9) 0%, rgba(26, 147, 111, 0.85) 100%), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 160px 0 100px;
            position: relative;
        }
        .section-title {
            color: var(--ptw-primary);
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--ptw-primary), var(--ptw-secondary));
            border-radius: 2px;
        }
        .service-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            height: 100%;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .service-card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        .service-icon {
            font-size: 3rem;
            background: linear-gradient(135deg, var(--ptw-primary), var(--ptw-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }
        .stats-counter {
            font-size: 3.5rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--ptw-primary), var(--ptw-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .flink {
            display: inline-block;
            padding: 12px 24px;
            margin: 8px;
            background-color: #f1f8ff;
            border-radius: 8px;
            color: var(--ptw-primary);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            border: 1px solid transparent;
        }
        .flink:hover {
            background-color: white;
            border-color: var(--ptw-secondary);
            color: var(--ptw-secondary);
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        footer {
            background-color: var(--ptw-primary);
            color: #e9ecef;
            padding-top: 60px;
        }
        .footer-links a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s;
            line-height: 2;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .contact-info i {
            width: 30px;
            color: var(--ptw-secondary);
        }
        .btn-ptw-primary {
            background: linear-gradient(90deg, var(--ptw-primary), var(--ptw-secondary));
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-ptw-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(13, 59, 102, 0.3);
            color: white;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1000;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--ptw-secondary);
            color: white;
            border: none;
            font-size: 1.2rem;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--ptw-primary);
            transform: translateY(-5px);
        }
        .testimonial-card {
            background-color: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: 100%;
            border-left: 5px solid var(--ptw-secondary);
        }
        .news-card {
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .img-hover-zoom {
            overflow: hidden;
            border-radius: 12px 12px 0 0;
        }
        .img-hover-zoom img {
            transition: transform 0.5s ease;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.05);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 60px;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stats-counter {
                font-size: 2.5rem;
            }
        }