:root {
            --primary: #1a56db;
            --secondary: #0e9f6e;
            --dark: #1f2937;
            --light: #f9fafb;
            --accent: #f59e0b;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--dark);
            background-color: #ffffff;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary);
        }
        .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            border-radius: 20px;
            transition: all 0.3s;
        }
        .nav-link:hover {
            background-color: rgba(26, 86, 219, 0.1);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .nav-link.active {
            background-color: var(--primary);
            color: white !important;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.9) 0%, rgba(14, 159, 110, 0.8) 100%), 
                        url('https://images.unsplash.com/photo-1523050854058-8df90110c9f1?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            padding: 10rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .service-card {
            border: none;
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px rgba(26, 86, 219, 0.15);
        }
        .service-card .card-body {
            padding: 2rem;
        }
        .service-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .stats-section {
            background: linear-gradient(135deg, var(--dark) 0%, #374151 100%);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            opacity: 0.15;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            background: linear-gradient(to right, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.5rem;
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(to bottom, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -2.3rem;
            top: 0;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 4px solid white;
            box-shadow: 0 0 0 3px var(--primary);
        }
        .partner-logo {
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1rem;
            border-radius: 12px;
            background: white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s;
        }
        .partner-logo:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .partner-logo img {
            max-height: 50px;
            max-width: 120px;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s;
        }
        .partner-logo:hover img {
            filter: grayscale(0%);
            opacity: 1;
        }
        friendlink {
            display: block;
            padding: 2rem 0;
            background-color: #f8fafc;
            border-top: 1px solid #e5e7eb;
            border-bottom: 1px solid #e5e7eb;
        }
        .flink {
            display: inline-flex;
            align-items: center;
            padding: 0.6rem 1.5rem;
            margin: 0.5rem;
            background: white;
            border-radius: 50px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            color: var(--dark);
            text-decoration: none;
            transition: all 0.3s;
            font-weight: 500;
        }
        .flink:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 86, 219, 0.15);
            color: var(--primary);
        }
        .flink i {
            margin-right: 0.5rem;
            color: var(--primary);
        }
        footer {
            background-color: var(--dark);
            color: #d1d5db;
            position: relative;
        }
        .footer-links a {
            color: #9ca3af;
            text-decoration: none;
            transition: color 0.3s;
            display: block;
            margin-bottom: 0.5rem;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(26, 86, 219, 0.3);
        }
        .btn-outline-light {
            border: 2px solid white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-outline-light:hover {
            background-color: white;
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 6rem 0;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0 !important;
            }
        }
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s, transform 0.8s;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }