:root {
            --primary-color: #1a237e;
            --secondary-color: #ff4081;
            --accent-color: #00bcd4;
            --light-bg: #f5f5f5;
            --dark-text: #212121;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            padding: 0.5rem 1rem;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover {
            color: var(--secondary-color);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color), #3949ab);
            color: white;
            padding: 8rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        .hero-section .lead {
            font-size: 1.5rem;
            margin-bottom: 2rem;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border: none;
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: #e91e63;
            transform: scale(1.05);
            box-shadow: 0 10px 20px rgba(233, 30, 99, 0.3);
        }
        .section-title {
            text-align: center;
            margin-bottom: 4rem;
            position: relative;
            padding-bottom: 1rem;
        }
        .section-title h2 {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background-color: var(--accent-color);
        }
        .card-custom {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
        }
        .card-custom img {
            height: 220px;
            object-fit: cover;
        }
        .card-custom .card-body {
            padding: 2rem;
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 35, 126, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-color);
            font-size: 2rem;
        }
        .team-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .contact-info {
            background-color: var(--light-bg);
            padding: 3rem;
            border-radius: 15px;
        }
        .contact-info i {
            color: var(--accent-color);
            font-size: 1.5rem;
            margin-right: 1rem;
        }
        .footer {
            background-color: var(--primary-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #bbdefb;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .friend-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 1rem;
            margin-top: 2rem;
        }
        .flink {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.8rem;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }
        .flink:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .flink a {
            color: white;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section .lead {
                font-size: 1.2rem;
            }
            .section-title h2 {
                font-size: 2.2rem;
            }
        }