:root {
            --primary-color: #0d6efd;
            --secondary-color: #6f42c1;
            --accent-color: #20c997;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --text-color: #333;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(13, 110, 253, 0.9) 0%, rgba(111, 66, 193, 0.85) 100%), url('https://images.unsplash.com/photo-1488521787991-ed7bbaae773c?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 150px 0 100px;
            position: relative;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 25px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 100px 0 60px;
            }
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover, .btn-primary:focus {
            background-color: #0b5ed7;
            border-color: #0a58ca;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(13, 110, 253, 0.2);
        }
        .btn-outline-light {
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-outline-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
        }
        .nav-link {
            font-weight: 600;
            padding: 8px 16px !important;
            margin: 0 5px;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: white !important;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
        }
        .navbar-brand i {
            color: var(--accent-color);
        }
        .impact-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            height: 100%;
            background: white;
        }
        .impact-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .impact-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: white;
        }
        .icon-bg-1 { background: linear-gradient(45deg, var(--primary-color), #0dcaf0); }
        .icon-bg-2 { background: linear-gradient(45deg, var(--secondary-color), #d63384); }
        .icon-bg-3 { background: linear-gradient(45deg, var(--accent-color), #198754); }
        .icon-bg-4 { background: linear-gradient(45deg, #fd7e14, #ffc107); }
        .card-img-top {
            height: 220px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .impact-card:hover .card-img-top {
            transform: scale(1.05);
        }
        .section-title {
            position: relative;
            margin-bottom: 50px;
        }
        .section-title h2 {
            display: inline-block;
            position: relative;
            padding-bottom: 15px;
        }
        .section-title h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            border-radius: 2px;
        }
        .section-title.text-center h2:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .counter-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 60px 0;
        }
        .counter-item h3 {
            font-size: 3rem;
            font-weight: 800;
            color: white;
            margin-bottom: 5px;
        }
        .flink {
            display: inline-block;
            background: var(--light-color);
            padding: 12px 25px;
            margin: 8px;
            border-radius: 10px;
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 600;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }
        .flink:hover {
            background: white;
            color: var(--primary-color);
            border-color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .flink i {
            margin-right: 10px;
            font-size: 1.2rem;
        }
        footer {
            background-color: #1a1d29;
            color: #aaa;
        }
        footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            background: var(--primary-color);
            transform: translateY(-5px);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
        }
        .form-control {
            padding: 12px 15px;
            border-radius: 10px;
            border: 1px solid #dee2e6;
        }
        .form-control:focus {
            box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
            border-color: var(--primary-color);
        }
        .testimonial-card {
            background: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            height: 100%;
            position: relative;
        }
        .testimonial-card:before {
            content: "\201C";
            font-size: 5rem;
            color: var(--primary-color);
            opacity: 0.2;
            position: absolute;
            top: 10px;
            left: 20px;
            font-family: serif;
        }
        .testimonial-img {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            border: 4px solid var(--light-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-color);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 1000;
            box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: #0b5ed7;
            color: white;
            transform: translateY(-5px);
        }