:root {
            --primary-color: #1a5f7a;
            --secondary-color: #f8b400;
            --accent-color: #2a9d8f;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --text-color: #333;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-header h2 {
            display: inline-block;
            padding-bottom: 15px;
            position: relative;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
            box-shadow: var(--box-shadow);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 95, 122, 0.3);
            color: white;
        }
        .btn-secondary-custom {
            background-color: var(--secondary-color);
            border: none;
            color: var(--dark-color);
            padding: 12px 30px;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-secondary-custom:hover {
            background-color: #e6a500;
            color: var(--dark-color);
            transform: translateY(-3px);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--dark-color) !important;
            margin: 0 8px;
            padding: 8px 16px !important;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            background-color: var(--primary-color);
            color: white !important;
        }
        .hero {
            background: linear-gradient(rgba(26, 95, 122, 0.85), rgba(42, 157, 143, 0.8)), url('https://images.unsplash.com/photo-1549399542-7e3f8b79c341?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0 100px;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .hero p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 700px;
        }
        .feature-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 30px;
            height: 100%;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border-top: 5px solid var(--primary-color);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 1.8rem;
        }
        .service-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .service-img {
            height: 220px;
            width: 100%;
            object-fit: cover;
        }
        .service-body {
            padding: 25px;
        }
        .coach-card {
            text-align: center;
            padding: 25px;
            border-radius: var(--border-radius);
            background: white;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .coach-card:hover {
            transform: translateY(-10px);
        }
        .coach-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid var(--light-color);
            margin: 0 auto 20px;
        }
        .testimonial-card {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin: 15px;
            position: relative;
        }
        .testimonial-card:before {
            content: "\201C";
            font-size: 5rem;
            color: var(--secondary-color);
            position: absolute;
            top: -20px;
            left: 20px;
            opacity: 0.3;
            font-family: Georgia, serif;
        }
        .news-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-8px);
        }
        .news-img {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }
        .news-body {
            padding: 20px;
        }
        .news-date {
            color: var(--accent-color);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .contact-info-box {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            text-align: center;
            height: 100%;
            transition: var(--transition);
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 1.5rem;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            padding: 10px 20px;
            margin: 8px;
            background: white;
            border-radius: var(--border-radius);
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid #e9ecef;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            border-color: var(--primary-color);
        }
        footer {
            background-color: var(--dark-color);
            color: #adb5bd;
            padding: 60px 0 20px;
        }
        footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: white;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .copyright {
            border-top: 1px solid #495057;
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.9rem;
        }
        .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;
            font-size: 1.2rem;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--accent-color);
            color: white;
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero {
                padding: 100px 0 80px;
                min-height: 70vh;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
        }