:root {
            --primary-color: #1a1a2e;
            --secondary-color: #16213e;
            --accent-color: #0f3460;
            --highlight-color: #e94560;
            --light-color: #f1f1f1;
            --dark-color: #121212;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.8;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
            color: var(--highlight-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(22, 33, 62, 0.9), rgba(15, 52, 96, 0.9)), url('https://images.unsplash.com/photo-1518709268805-4e9042af2176?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            color: white;
            padding: 180px 0;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
        }
        .hero-section p {
            font-size: 1.3rem;
            max-width: 700px;
            margin: 0 auto 2rem;
        }
        .section-title {
            color: var(--accent-color);
            font-weight: 700;
            margin-bottom: 2rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 70%;
            height: 4px;
            background: var(--highlight-color);
            bottom: -10px;
            left: 15%;
            border-radius: 2px;
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .btn-primary-custom {
            background-color: var(--highlight-color);
            border-color: var(--highlight-color);
            padding: 12px 30px;
            font-weight: 600;
            border-radius: 30px;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: #d43f5a;
            border-color: #d43f5a;
            transform: scale(1.05);
        }
        .service-icon {
            font-size: 3rem;
            color: var(--highlight-color);
            margin-bottom: 1rem;
        }
        .footer {
            background-color: var(--primary-color);
            color: var(--light-color);
            padding: 60px 0 30px;
        }
        .footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: var(--highlight-color);
        }
        .friendlink .flink {
            display: inline-block;
            margin: 10px 15px;
            padding: 8px 20px;
            background: #f8f9fa;
            border-radius: 20px;
            color: var(--accent-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #dee2e6;
        }
        .friendlink .flink:hover {
            background: var(--highlight-color);
            color: white;
            border-color: var(--highlight-color);
        }
        .img-fluid-rounded {
            border-radius: 15px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .contact-info i {
            color: var(--highlight-color);
            margin-right: 10px;
        }
        .sticky-nav {
            background-color: rgba(255,255,255,0.95) !important;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--primary-color) !important;
            margin: 0 5px;
            border-radius: 20px;
            padding: 8px 20px;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            background-color: var(--highlight-color);
            color: white !important;
        }
        @media (max-width: 768px) {
            .hero-section h1 { font-size: 2.5rem; }
            .hero-section p { font-size: 1.1rem; }
            .section-title { font-size: 1.8rem; }
        }