:root {
            --primary-color: #d52b1e;
            --secondary-color: #1a365d;
            --accent-color: #f0b429;
            --light-bg: #f8f9fa;
            --dark-text: #333333;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, .navbar-brand {
            font-weight: 700;
            color: var(--secondary-color);
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
        }
        .section-title.text-start:after {
            left: 0;
            transform: none;
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://picsum.photos/seed/hero/1920/1080') center/cover no-repeat;
            color: white;
            padding: 180px 0 120px;
            position: relative;
        }
        .hero-section h1 {
            color: white;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
        }
        .nav-bar {
            background-color: rgba(255, 255, 255, 0.95) !important;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transition: var(--transition);
        }
        .nav-bar.scrolled {
            padding-top: 5px;
            padding-bottom: 5px;
        }
        .navbar-brand {
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            margin: 0 8px;
            color: var(--secondary-color) !important;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary-color) !important;
            border-bottom-color: var(--primary-color);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #b3241a;
            border-color: #b3241a;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(213, 43, 30, 0.2);
        }
        .icon-box {
            background: white;
            padding: 40px 30px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
            transition: var(--transition);
            border-top: 5px solid transparent;
        }
        .icon-box:hover {
            transform: translateY(-10px);
            border-top-color: var(--primary-color);
        }
        .icon-box i {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 25px;
        }
        .stats-box {
            background: var(--secondary-color);
            color: white;
            padding: 40px 20px;
            border-radius: 10px;
            text-align: center;
        }
        .stats-box .number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent-color);
            line-height: 1;
        }
        .news-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .news-card .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .news-card .card-body {
            padding: 25px;
        }
        .partner-logo {
            background: white;
            padding: 20px;
            border-radius: 8px;
            height: 120px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .partner-logo:hover {
            transform: scale(1.05);
        }
        .partner-logo img {
            max-width: 100%;
            max-height: 60px;
            filter: grayscale(1);
            opacity: 0.7;
            transition: var(--transition);
        }
        .partner-logo:hover img {
            filter: grayscale(0);
            opacity: 1;
        }
        friendlink {
            display: block;
            margin-bottom: 30px;
        }
        .flink {
            display: inline-block;
            background: var(--light-bg);
            color: var(--secondary-color);
            padding: 10px 20px;
            margin: 0 10px 10px 0;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .contact-info-box {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 30px;
            text-align: center;
            transition: var(--transition);
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
        }
        .contact-info-box i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        footer {
            background: var(--secondary-color);
            color: rgba(255,255,255,0.8);
            padding-top: 60px;
        }
        footer a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: white;
            padding-left: 5px;
        }
        footer .social-links 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: 10px;
        }
        footer .social-links a:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
        }
        .copyright {
            background: rgba(0,0,0,0.2);
            padding: 20px 0;
            margin-top: 50px;
            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;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            color: white;
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 140px 0 80px;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .section-title {
                margin-bottom: 30px;
            }
            .icon-box, .stats-box, .contact-info-box {
                margin-bottom: 25px;
            }
        }