:root {
            --primary-color: #1a56db;
            --secondary-color: #0ea5e9;
            --accent-color: #f59e0b;
            --dark-color: #1f2937;
            --light-color: #f8fafc;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--accent-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 120px 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        .hero-section p {
            font-size: 1.25rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #0d3fa3;
            border-color: #0d3fa3;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 3rem;
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .icon-box {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background-color: rgba(26, 86, 219, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .team-member img {
            width: 150px;
            height: 150px;
            object-fit: cover;
            border-radius: 50%;
            border: 5px solid #fff;
            box-shadow: var(--shadow);
        }
        .testimonial-card {
            background-color: #f8fafc;
            border-left: 4px solid var(--accent-color);
            padding: 2rem;
        }
        .form-control {
            border-radius: 8px;
            padding: 0.75rem 1rem;
            border: 1px solid #d1d5db;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 86, 219, 0.25);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer-links a {
            color: #d1d5db;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--accent-color);
        }
        .friendlinks {
            background-color: #374151;
            padding: 2rem;
            border-radius: 12px;
            margin-top: 2rem;
        }
        .friendlinks h4 {
            color: #f8fafc;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        .flink {
            display: inline-block;
            background-color: #4b5563;
            color: #f3f4f6;
            padding: 0.6rem 1.2rem;
            margin: 0.5rem;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s;
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--accent-color);
            color: #1f2937;
            transform: scale(1.05);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }