:root {
            --primary-color: #e83e8c;
            --secondary-color: #6f42c1;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: #333;
            line-height: 1.6;
        }
        .navbar {
            background: rgba(52, 58, 64, 0.95) !important;
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            padding: 0.8rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-link {
            color: #fff !important;
            font-weight: 500;
            margin: 0 0.5rem;
            padding: 0.5rem 1rem !important;
            border-radius: 20px;
            transition: all 0.3s ease;
        }
        .nav-link:hover, .nav-link.active {
            background-color: var(--primary-color);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1534528741775-53994a69daeb?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0;
            margin-bottom: 4rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
        }
        .hero-section .lead {
            font-size: 1.5rem;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            margin-bottom: 1.5rem;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .card-title {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .badge-custom {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .btn-custom {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            border: none;
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(232, 62, 140, 0.3);
            color: white;
        }
        .video-container {
            position: relative;
            padding-bottom: 56.25%;
            height: 0;
            overflow: hidden;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }
        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 4rem 0;
            border-top: 1px solid #dee2e6;
            border-bottom: 1px solid #dee2e6;
        }
        .flink {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            margin: 0.5rem;
            background: white;
            border-radius: 10px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }
        .flink:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        footer {
            background-color: var(--dark-color);
            color: #adb5bd;
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 0.75rem;
            transition: all 0.3s ease;
        }
        .social-icons a:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .nav-link {
                margin: 0.2rem 0;
                text-align: center;
            }
        }