:root {
            --primary-color: #1a5f7a;
            --secondary-color: #2d8b8b;
            --accent-color: #f9a826;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
        }
        body {
            font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
            color: #333;
            line-height: 1.6;
        }
        header {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: bold;
            color: white !important;
        }
        .navbar-nav .nav-link {
            color: rgba(255,255,255,0.9) !important;
            font-weight: 500;
            padding: 0.5rem 1rem;
            transition: all 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--accent-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: url('https://images.unsplash.com/photo-1542601906990-b4d3fb778b09?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-shadow: 2px 2px 10px rgba(0,0,0,0.7);
            position: relative;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        section {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 2rem;
            text-align: center;
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 100px;
            height: 4px;
            background: var(--accent-color);
            margin: 10px auto 30px;
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.2);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .footer {
            background: var(--dark-color);
            color: var(--light-color);
            padding: 3rem 0 1.5rem;
        }
        .footer a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .friendlinks {
            background: #f1f1f1;
            padding: 2rem 0;
        }
        .flink {
            display: inline-block;
            margin: 0.5rem 1rem;
            padding: 0.5rem 1.5rem;
            background: white;
            border-radius: 25px;
            color: var(--primary-color);
            font-weight: 600;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            transition: all 0.3s;
            text-decoration: none;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        .contact-info i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--accent-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            transition: all 0.3s;
            z-index: 1000;
            border: none;
        }
        .scroll-top:hover {
            background: var(--primary-color);
            transform: scale(1.1);
        }
        @media (max-width: 768px) {
            .hero-section {
                height: 60vh;
            }
            .section-title {
                font-size: 2rem;
            }
            section {
                padding: 3rem 0;
            }
        }