:root {
            --primary: #1e3a8a;
            --secondary: #dc2626;
            --accent: #f59e0b;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--dark);
        }
        .navbar {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding-top: 1rem;
            padding-bottom: 1rem;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary) !important;
        }
        .navbar-brand span {
            color: var(--secondary);
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark) !important;
            margin: 0 0.5rem;
            transition: color 0.3s;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: var(--secondary);
            bottom: -5px;
            left: 0;
            transition: width 0.3s;
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
            color: white;
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 200%;
            background: rgba(255, 255, 255, 0.05);
            transform: rotate(30deg);
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 2rem;
        }
        .btn-primary {
            background: var(--secondary);
            border: none;
            padding: 0.8rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background: #b91c1c;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(220, 38, 38, 0.3);
        }
        .btn-outline-light {
            border-radius: 50px;
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-outline-light:hover {
            background: white;
            color: var(--primary);
            transform: translateY(-3px);
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .card-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: -35px auto 1.5rem;
            color: white;
            font-size: 1.8rem;
            box-shadow: 0 5px 15px rgba(30, 58, 138, 0.3);
        }
        .feature-box {
            padding: 2rem;
            border-radius: 15px;
            background: white;
            height: 100%;
            border: 1px solid #e2e8f0;
            transition: all 0.3s;
        }
        .feature-box:hover {
            border-color: var(--accent);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
        }
        .feature-box i {
            color: var(--secondary);
            margin-bottom: 1.5rem;
        }
        .app-download-section {
            background: linear-gradient(to right, #f8fafc, #f1f5f9);
            padding: 5rem 0;
        }
        .download-btn {
            display: inline-flex;
            align-items: center;
            padding: 0.8rem 1.8rem;
            background: var(--dark);
            color: white;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            margin: 0.5rem;
        }
        .download-btn:hover {
            background: #334155;
            color: white;
            transform: translateY(-3px);
        }
        .download-btn i {
            font-size: 1.5rem;
            margin-right: 0.8rem;
        }
        .stats-box {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        .stats-box:hover {
            transform: translateY(-5px);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .stats-label {
            color: var(--gray);
            font-weight: 600;
            margin-top: 0.5rem;
        }
        .news-card {
            border-left: 5px solid var(--secondary);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .news-date {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.9rem;
        }
        footer {
            background: var(--dark);
            color: #cbd5e1;
            padding-top: 4rem;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            background: #0a0e17;
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .friendlink {
            background: #f8fafc;
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 8px;
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            border: 1px solid #e2e8f0;
            transition: all 0.3s;
        }
        .flink:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .qrcode-box {
            text-align: center;
            padding: 1.5rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            max-width: 250px;
            margin: 0 auto;
        }
        .qrcode-box img {
            max-width: 100%;
            height: auto;
        }
        .contact-info i {
            width: 40px;
            color: var(--secondary);
        }
        .modal-content {
            border-radius: 15px;
            overflow: hidden;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .navbar-collapse {
                background: white;
                padding: 1rem;
                border-radius: 10px;
                margin-top: 1rem;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            }
            .stats-number {
                font-size: 2.5rem;
            }
        }
        .img-fluid {
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        .form-control, .form-select {
            padding: 0.8rem 1rem;
            border-radius: 10px;
            border: 1px solid #cbd5e1;
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 0.25rem rgba(30, 58, 138, 0.25);
        }
        .badge {
            padding: 0.5em 1em;
            font-weight: 600;
        }
        .animate-fade-in {
            animation: fadeIn 1s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }