:root {
            --primary-color: #d4af37;
            --secondary-color: #333;
            --accent-color: #8b0000;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
        }
        body {
            font-family: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--dark-text);
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1920x600/333/fff?text=凉森玲梦官方主页') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 120px 0;
            text-align: center;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .section-title {
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 10px;
            margin-bottom: 30px;
            display: inline-block;
            font-weight: 700;
        }
        .card {
            border: none;
            box-shadow: 0 5px 15px 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: 250px;
            object-fit: cover;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            font-weight: 600;
            padding: 10px 25px;
        }
        .btn-primary:hover {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
        }
        .footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 40px 0 20px;
        }
        .flink a {
            color: var(--primary-color);
            text-decoration: none;
            padding: 5px 15px;
            border: 1px solid var(--primary-color);
            border-radius: 5px;
            margin: 5px;
            display: inline-block;
            transition: all 0.3s;
        }
        .flink a:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .sticky-top {
            top: 0;
            z-index: 1020;
        }
        .video-thumbnail {
            position: relative;
            overflow: hidden;
            border-radius: 8px;
        }
        .video-thumbnail img {
            transition: transform 0.5s;
        }
        .video-thumbnail:hover img {
            transform: scale(1.05);
        }
        .play-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-size: 3rem;
            opacity: 0.8;
        }
        .content-text {
            text-align: justify;
            font-size: 1.1rem;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .navbar-nav {
                text-align: center;
            }
        }